2015年7月26日星期日

How to Build a Deer Hoist

Processing deer is a somewhat messy job and the best way to do the job right is to hang the animal. You can purchase commercial hoists but they are expensive. Building your own hoist will save you money and you can custom fit it to the location in which you prefer to use it. A portable hoist that can be used in the field is a common device that can be assembled quickly and used just about anywhere.
Instructions

Check your winch for the specifications of the cable it uses. You will need a minimum of 25 feet of cable as you are going to lift the deer over an available tree limb. A typical manual winch can lift approximately ½ ton with 5/32-diameter steel cable, which is more than enough to hoist your deer over a tree limb.
Make a small loop in one end of the cable. Insert a cable clamp around the end and the cable where the loop begins. Tighten the clamp with the pliers.
Wind the cable tightly on the winch so the tension stays consistent. Winch cables come pre-attached and wound; however, after use it is important to rewind the cable carefully to avoid slack in the line, which can jerk the deer right off the gambrel.
Hang the cable over a high tree limb or other bar-type structure out in the field to building hoist the deer. Attach your gambrel to the end of the cable once it has been hung over the limb. A gambrel is a triangular-shaped device with a spreader bar in the center and two hooks or prongs at either end of it to attach a deer’s legs. The top bars of the gambrel are usually either flexible strapping, cable or solid bars that come to a point for hanging. Attach the gambrel to the cable with an S-hook.
Hoist the deer using the electric or hand winch by cranking it once the deer has been secured to the gambrel. Lift the deer to a comfortable height to work on field dressing it.

2015年7月19日星期日

Frequency buliding hoist FAQ

1. The building hoist is one of the major high-rise construction crane equipment most commonly used in building construction, the construction site is a major hazard in security checks and safety management as a key should be the focus. Past accidents and bloody lesson is profound, only in October 2008 - November, on a spate of domestic building hoist 2 from major accidents, killing 12 people and 18 people were killed and direct and indirect losses exception huge, huge irreparable damage to multiple families. In recent years, construction accidents tended to increase gradually beyond the coal industry, in addition to a traffic accident become the second largest security incidents outside the industry. Strict inspection, scientific management, prevention is the construction site construction crane safety management key, we need serious discussion and analysis.

2 construction lifts Checkpoints
    2.1 Part-site inspection entity
    2.1.1 base, base, fence
    ⑴ check whether basic parts of water, if there is evidence of uneven or sink.
    ⑵ mounted on one floor of the elevator, you must check the basement roof support systems and computing programs and inspection data base (including covert acceptance).
    ⑶ check the base, fence grounding system meets the requirements, whether the grounding resistance less than or equal 4Ω.
    ⑷ cage and the counterweight buffer (spring) is complete and effective.
    ⑸ pick tight end of the cage surrounding undamaged and height of not less than 1.8m.With the development of science and technology, frequency control in building hoist to get more and more widely used. Frequency has a smooth start and stop the process, reduce the mechanical impact and increase occupant comfort, improve service life, but also can adjust the speed by varying the frequency of power supply, save energy, improve efficiency, but in the course of Frequency Control System It will be interference, often caused by building hoist accidents happen.building hoist inverter system circuit consists of two parts of the main circuit and control circuit. The main circuit consists of two parts rectifier, inverter circuit; a control circuit consists of a microprocessor, PAW trigger, PWM current controller and current feedback and other components.
 Sources of interference building hoist building hoist inverter circuit block diagram of frequency control system are: overvoltage, undervoltage, instantaneous power failure inductive interference; inductive interference surge currents; inductive interference peak voltage pulse; when the weather since fog inductive interference sense currents; radio signal interference.
building hoist inverter system after interference can cause your system is running out of control, causing the motor is running faster or slower, running up and down the cage unstable speed; the control malfunction occurs stop button and emergency stop button does not work, the motor can not stop such phenomena may cause loss of control or by falling building hoist, causing accidents.

2015年7月16日星期四

What Are the Dangers of Working in a Concrete-Based Plant?

Employees who work with concrete are subject to dangers from exposure to the material. While the extent of the danger related to the concrete is significant in jobs such as construction, the highest risk to concrete-specific hazards is within the facilities that manufacture the concrete, according to the IOP Science website. Knowing the potential risks associated with working in a concrete-based plant can help workers prepare for the job and minimize the dangers of working there.
 

Inhalation Dangers

  • People who work in a concrete machinery setting are constantly exposed to the dust from the dried raw materials. Those who sweep and clean are especially susceptible to inhalation hazards. Portland cement is a common material used to make concrete, and the dust from the dried cement has been labeled a possible cancer risk, according to the IOP Science website.
    Inhaling this dust is suspected to increase risk of several cancers, including pharyngeal carcinoma and gastric cancer. Inhaling this material is also known to cause nose and throat irritation and respiratory difficulties. Exposure to crystalline silica dust, another concrete raw material, can lead to a serious lung disease called silicosis, according to the State Compensation Insurance Fund website.

Skin Contact

  • While working with and mixing concrete in a plant, workers are likely to expose their skin to wet concrete from time to time. As long as the substance is washed off immediately, irritation is unlikely. However, extended contact with the skin will cause concrete to burn the skin because of the alkaline nature of the mixture. These burns can range from first- to third-degree, and skin ulcers may result if the substance is in contact with the skin for long periods.
    Even with protective clothing, workers may get bits of concrete trapped inside boots or have it soak through layers of clothing, according to the Electronic Library of Construction Occupational Safety and Health. This risk is the same for both concrete batching plant workers and construction workers dealing with concrete.

Eye Injury

  • The same dust that can cause lung problems when inhaled can also do damage to the worker’s eyes. Depending on the amount of dust that enters the eyes and the duration before they are rinsed clean with water, the effects can range from minor eye irritation and redness to chemical burns on the eyeballs, according to the State Compensation Insurance Fund website.

Allergies

  • Some workers who are in the presence of cement regularly develop an allergy (or occupational asthma) to the hexavalent chromium in the product. This asthma-like allergy causes breathing difficulty and wheezing. Chromium allergies may also lead to skin rash or skin ulcers, according to the Electronic Library of Construction Occupational Safety and Health website.

2015年7月15日星期三

How to Erect a Tower Crane

Tower cranes are used on construction sites to move materials from low to high places, and vice versa. They are used for high-rise structures, in areas where a wheel-mounted crane is not large enough to carry out the work. Erecting a tower crane should only be carried out by trained professionals; if you try to raise it yourself with little or no experience, you run a high risk of collapse, leading to extensive loss and damage.

Instructions

  1. Use an excavator to dig a pit for the crane base, and fill it with concrete. Set steel anchors into the concrete, which will attach to the first section of the crane's mast. Leave the concrete machinery to cure for 24 hours.
  2. Attach the first section of mast securely to the anchors using bolts. Use your spirit level to ensure that the mast is vertical.
  3. Fix another section of mast to the first using bolts, and continue to do so until you have reached your desired height. You will need a scissor lift or telescopic boom to carry out this step.
  4. Assemble the horizontal sections -- also known as the jibs -- to the mast. These hold the chains for lifting materials on one side, and the counterweights on the other, to prevent the crane from toppling over. These horizontal jibs should be securely fixed using steel bolts.
  5. Load the crane to full capacity to check it has been assembled correctly.

2015年7月12日星期日

Tower crane market forecast analysis into the electricity business era

As China's large-scale infrastructure construction continue to be launched, as well as expand the construction of cities and towns around the tower crane to the construction way it has brought great convenience, China tower crane market outlook uncertain, the long-term bullish. In addition, the electricity supplier to enter the tower crane has become the industry trend.

China's current production of tower crane, construction machinery will not only meet the domestic demand, but also exported to Europe and other developed countries and regions, China has become the world's largest producer of the tower crane. Public information, in 2002 China became the world's first tower annual production exceeded 1 million units in the country, and by 2010, China's tower crane production reached nearly 40,000 (including export 2,000 units).
These are no doubt good news for e-commerce journey tower crane.
Due to changes in the market, in order to meet our customers enjoy in the purchase process tower more professional, comprehensive services, many large domestic enterprises began to aim the tower crane electricity supplier, and tasted the sweetness. In fact, not all tower crane manufacturers have shared electricity supplier cake. Like the small tower pressure by funding and personnel, inability their operating platforms, but if the use of network marketing, especially with mature business platform, is relatively simple.
Tower cranes enterprises to enter the field of electronic commerce are generally divided into three ways, first it is to create their own e-commerce platform, this approach requires initial investment capital and technical requirements are very high; the second is the use of e-commerce platform, enterprise to establish their own operations and maintenance teams, this mode is advantageous in that position can quickly bring a commercial return, but requires operators of high-quality personnel; third is looking for an agent operators, traditional enterprise and agency operators benefit-sharing agreement reached . As can be seen, the third model the desired small cost, the threshold is low, more suitable for SMEs.
However, even in cooperation with the proxy operators, multi-mode e-commerce platform also enable SMEs dilemma.
At present, many domestic small and medium enterprises in the use of B2B platform, has formed a limitation of consciousness, only concerned with Alibaba and other large e-commerce site, however, was found in the presence of orders did not increase, some companies even therefore lost confidence in e-commerce.
Looking at the domestic suppliers industry, mechanical and electrical tower, according to online trading platform pay-lifting equipment factory store only one.
Many B2B platform with membership, regardless of whether there are orders, the annual membership fee is there, the manufacturers bear a great deal of risk.
Lifting Equipment Factory Store model is a single before does not charge any fees, so-called pay-per-effects, the transaction is not successful, do not charge a penny. Simply publishing companies supply information on the platform, the factory shop will spare no effort to promote, resolve inquiries, order problems, and ultimately by the enterprise to decide whether to trade. Did not come alone, the firm is not to spend a penny.
Coupled free to enter, exclusive service, lifting equipment factory shop online brand is simply business Direct center. Many manufacturers have successfully settled tower crane lifting equipment factory stores, will lead the tower crane industry into the era of the electricity supplier.

2015年7月9日星期四

The world's longest concrete pump truck boom staged the first show

July 28, the Guinness Book of World Records the world's longest boom pump - Zoomlion 101 meters of carbon fiber boom pump in the "Central China's tallest building," the first show in Wuhan center construction. The collection of the carbon fiber boom pump structure section seven arm technology boom vibration control technology and motor coordination, the most cutting-edge technology to develop a series of pump field a full operational loads analog design analysis technology, and efficient large displacement technology . Its success construction, representing Zoomlion for long boom pump technology giants to master and use environment, and establish a benchmark for the global truck products. The field of construction machinery called "the most luxurious performance" construction exhibition, which attracted more than experts in the field, the construction machinery industry association leaders and hundreds of domestic construction machinery end users.

Steel Jubi volley pumped change my life scared Mining
Four o'clock in the afternoon, 101 m truck debut in Wuhan, central site opened. Viewed from the Wuhan center podium, I saw a steady flow of steel Jubi concrete delivered to the top of the Wuhan center on the 4th floor of the main building, spectacular scenes.
As the saying goes, "lay watch, experts see Road", from the construction of three of the "experts" - the construction site for the Project Manager Deng Weihua correspondent interpretation of the 101 meters Aspect pump construction: "The construction wonderful place can be summarized by three words, that is 'long', 'stable', 'fast' 'long' refers to the 101 m pump in extreme conditions to achieve a normal length boom pump can not be achieved Long span pumping, 'stable' refers 101 meters the world's longest boom pump stability in the construction process even more than the general short boom pump, 'fast' refers to the 101 m pump Concrete pumping efficiency can reach 60 m pump of 1.36 times. "
Reporters learned that the late 1960s, German invention 16 m boom pump, and spent nearly 20 years to nearly 40 m jib hoist, after the development process will be the length of the boom truck was stalled. Until the twenty-first century, the situation was only China's "latecomers" rewrite. In recent years, due to the continuous development of China's long arm pump technology, the domestic market demand and the structure has been quietly changed. Among them, in the weight proportion Chief boom pump truck it sells products from about 30% three years ago, it rose to around the current 60%. As long arm pump technology pioneer, leads the way, Zoomlion research team mastered the technology in the field of patents hundreds pump successfully developed to 80 m, 101 m of carbon fiber boom pump as the representative a series of long arm pump. Secretary-General of China Construction Machinery Industry Association, Suzi Meng description: "The production of Zoomlion 101 meters of construction and truck series long arm pump, indicating to Zoomlion, led by our long arm pump technology has gone a world leader in science and technology innovation capacity Zoomlion led to the development and progress of similar products, but also reflects China's manufacturing industry by leaps and bounds. "This not only benefited originated Zoomlion research institutes of science and technology innovation enterprises genes, and also Zoomlion become the first brand of engineering machinery pursue inseparable.
Open blue ocean very close to the world's top three
A Societe Generale Securities ten main financial indicators for the construction machinery industry listed companies in 2012 and the first quarter of 2013. Analysis of data shows: total industry revenues since the first quarter of last year fell, a decline in the fourth quarter of last year reached maximum 86.8% Then in the first quarter to close to 55%. Data transfer of such a message: industry revenues continued to decline year on year high. Data outlines the construction machinery industry is facing a winter situation, but also reveals the industry increasingly fierce market competition.
Faced with tough competition in the market and the recent chaos of the outside world public opinion, as the head of Zoomlion concrete machinery business, the core business of non-Chen showed a strong confidence in the future. He believes that the more companies in a difficult situation, the more it should sink in the heart to do practical things, rational face of competition. He said that although the industry is facing overcapacity, slowdown of winter, but as long as good at seizing future trends, see new growth, and the ability to develop new areas of the corresponding products through technological innovation, the future of concrete machinery industry is still promising.
In recent years, Zoomlion concrete machinery company will continue to sand equipment, dry mortar equipment, continuous gradation mixing plant and other new products to market. Reporter has learned that China has nearly 3 billion cubic meters of concrete per year for infrastructure and major construction projects, it is estimated that the concrete industry is now growing at a rate of nearly 10 billion tons of annual consumption of sand and gravel, river sand mining for many years brought wanton the growing scarcity of natural resources river sand, concrete cost of raw materials prices continue to rise and other issues. Zoomlion introduced to the market mechanism sand equipment can use construction waste and other raw materials in the production of sand substitute for river sand, become the upgrading of the quality of sand and gravel, river sand resources protection, construction waste processing more efficient solutions. Experts predict that the market will increase the proportion of sand every year. The next decade efficient, environmentally friendly new sand equipment reached nearly billion annual market demand.
Ready-mixed mortar can be widely used in the construction a new building material, in European and American countries have developed more mature. With the continuous development of China's environmental protection cause, following the commercial concrete widely available, countries have began to further promote the ready-mixed mortar. Zoomlion early in 2007 set about developing dry mortar equipment, to achieve the independent development of core components, the introduction of products on the market leader. According to expert estimates, the future size of the market ready-mixed mortar capacity of up to 5-8 million tons. To 2015-2017, the ready-mixed mortar production line annual sales of up to about 1200, the annual sales volume of ready-mixed mortar equipment up to 20 billion, has a promising future.
Graded concrete mixing plant is Zoomlion concrete industry for the production process problems, tailored a solution. According to reports, the use of continuous gradation produced concrete mixing floor, not only can save cement per cubic meter of concrete with about 50-100 kg, and produced concrete strength will be significantly better than similar products, thereby greatly enhancing the reinforced concrete structures life. And extend the life of the building, it is the best measure of a low-carbon economy.
Non-Chen said that the future of concrete machinery industry needs products will be more environmentally friendly, intelligent, user-friendly products, with the above-mentioned security technology and products in the industry, he was confident of emerging markets and now the same scale reconstruction of a concrete machinery industry cluster .
Chen Non-introduced Road, in 2012, after the 2013 first quarter results with the industry overall decline since the second quarter Zoomlion concrete machinery sales presentation qoq trend. Due to prudent management style, product technology to meet market continued innovation, business performance steadily. In addition, the chairman of Zoomlion Zhan has also showed that: the future, in addition to construction machinery industry, Zoomlion also planned environmental industry, agricultural machinery, heavy trucks, financial services and other business four business segments, shows among the "top three global engineering machinery enterprises' confidence and determination.

2015年7月8日星期三

OTR tire maintenance tips and precautions

According to statistics, maintenance costs, vehicle tires accounted for the entire 15% of the cost of normal maintenance. Analysis of abnormal wear of the tire causes and take appropriate measures to prevent abnormal tire wear and prolong life, reduce costs and improve efficiency in the use and ensure the safety of their jobs and others have practical significance.
Tires are an important part of the wheel of the vehicle, its technical condition directly affects the traction of wheeled vehicles, by nature, smooth, safety, comfort and economy. According to statistics, maintenance costs, vehicle tires accounted for the entire 15% of the cost of normal maintenance. Analysis of abnormal wear of the tire causes and take appropriate measures to prevent abnormal tire wear and prolong life, reduce costs and improve efficiency in the use and ensure the safety of their jobs and others have practical significance. By analyzing the reasons for abnormal wear of the tire, it puts forward a number of measures to extend the useful life of tires, for user reference you practice in order to save costs, protect the machine, to get better value for money.
Abnormal wear of the tire during use caused due to various factors, it is to make the majority of drivers headache. There are tire pressure is too high, too low, overload operation, poor wheel alignment, as well as rough handling operator driving unskilled caused unreasonable damage as well as an optional external hard objects and installation of tires, will be to reduce the tire life. How to effectively circumvent these abnormal wear, we need to do the following in these areas:
First, strict adherence to standard tire, inflated should check all parts for leaks, and tire pressure should be checked regularly to ensure compliance with standards. To develop the habit of using a barometer measuring the pressure, do not judge with the naked eye. To ensure that the tires have a certain flexibility, at a predetermined load to bear, so that deformation does not exceed the specified range, ensure the vehicle has good stability and comfort while in motion. Spare tire air pressure to charge relatively high, so as not to run gas falling.
Secondly, we must properly matching and installation of tires, according to tire size equipped with the appropriate tube. Tires on the same mechanical assembly shall ensure that the same brand, the same structure and the same performance. If this is not done, it should be on the same shaft assembly of the same brand, same size, the same pattern and the same type of tire; when new tires, should be done with the vehicle or coaxial transducer; with directional tread tires shall be installed in accordance with the provisions of the rolling direction; when switching to new tires, new tires should be mounted on the front wheel, repaired tire is mounted on the rear wheel. To ensure traffic safety, retreaded tires are not allowed to make the steering wheel (front) use.
Third, regularly rotate the tires. After the vehicle for some time, before and after fatigue and tire wear on it is different, and should therefore be required to timely transposition. There are two methods to change a tire cross and round-robin. Transposition law applicable to the regular on the arch of a larger road vehicles, while the law applicable to the regular cycle of change on a relatively flat road vehicles.
Fourth, as well as control tire temperature, vehicles in the process, the tire due to friction, deformation of the heat, so that the temperature inside the tire, the pressure increases. When the tire temperature is high, the buck can not use deflate method, but not to the tires cool splash avoid accelerated tire damage. Should shady place to park at rest, before continuing with the tire until the temperature decreases. The way the vehicle is stopped and the site, to develop safe taxi parking habits. To select a smooth, clean and free of grease ground parking, each tire must be smooth landing, especially vehicle loading overnight, but also should pay attention to selecting the parking place, if necessary, from the top to the rear wheels. When the vehicle is a long time out, you should use the wood to the frame to withstand in order to reduce the load on the tire; not no place to park the tire pressure should be from the top wheel.
Fifth, tires should be stored in the vicinity of the sun to avoid, oils, acids, flammable and corrosive chemicals. All tires should be stored in cooling, dry and dark interior, tires should stand up, non-flat, stacked or hung heart strings. Storage period shall not exceed three years. For separate storage tube should be filled with the right amount of air can not be folded flat or stacked. When not stored separately, they need to be placed within the tire, and the right amount of inflated.
In addition, in the winter cold area, due to the low temperatures, the tire rubber brittleness increased, decreased flexibility, again with a vehicle parked overnight or for a long time after, the start should slowly lift the clutch pedal with a smooth start, the first few kilometers to low speed, be tire temperature rise after normal driving. If the vehicle is suspended on the ice for some time, the ground site may be frozen at the start should be particularly careful to prevent tread tearing. The vehicle is cold outdoor parking area for a long time, in order to prevent the tires and the ground frozen, should be fitted wood or sand in the tires.