35results about How to "Reduce the weight of the counterweight" patented technology

The invention discloses an elevator traction belt and an elevator with the traction belt. The traction belt comprises a wrapping layer and at least one bearing body sleeved with the wrapping layer. Each bearing boy comprises basalt fibers and a resin matrix which are compounded together. The basalt fibers comprise multiple parallel basalt fiber filaments. Due to the fact that density of the basalt fibers and the density of the resin are both smaller than that of a steel wire, the weight of the traction belt is effectively reduced, the traction belt can be easily used on the elevator with superlarge lifting height, and the range of an existing maximum elevator lifting height can be widened. Meanwhile, the basalt fibers have a good sound absorption effect, the traction belt is made from the basalt fibers, noise generated during operation of the traction belt can be effectively lowered, and elevator taking comfort is improved. The basalt fiber filaments are arranged in the resin matrix in parallel, friction force among the fiber mono-filaments is reduced, the traction belt has the advantages of being free of twisting, resistant to abrasion, resistant to fatigue and the like, the traction performance of the traction belt is improved, and the service life of the traction belt is prolonged.

The invention provides a tandem hybrid fork lift truck. The tandem hybrid fork lift truck comprises an electric energy providing device, a rectifier, a walking motor, a lifting motor and an electric energy storing device, wherein after alternating current which is provided by the electric energy providing device flows through the rectifier, the electric energy providing device is connected in parallel with the electric energy storing device; after the electric energy providing device is connected in parallel with the electric energy storing device, the output end is collected with the walking motor and / or the lifting motor; the electric energy storing device can be charged to store electric energy and also can discharge to use the stored electric energy; both the walking motor and the lifting motor are generator-motor dual-purpose motors; a driving axle and tyres can drive the walking motor to generate electricity during braking, so that braking energy is converted into electric energy; and under the action of heavy objects, a lifting appliance can drive the lifting motor to generate electricity, so that the potential energy of the heavy objects is converted into electric energy. By the technical scheme of the invention, the potential energy of a falling gantry is converted into the electric energy and stored to ensure that the potential energy is recycled; the braking energy is also recycled during braking; and the tandem hybrid fork lift truck is easy to control and environment-friendly and has small shock at the moment of startup and shutdown.

The invention provides a production method of a washing machine balancing weight. The method comprises the steps that 15 parts of slags, 12 parts of cement, 8 parts of waste metal scrap granules, 2 parts of gravels and 5 parts of carborundum are mixed, a proper amount of water is added for stirring to form slurry, and the slurry is poured into a mold to form a foundation balance weight core; 45 parts of high-purity acrylic acid and 20 parts of sodium hydroxide are neutralized in water to be cooled, 10 parts of plant starch and 0.3 part of potassium persulfate are added for stirring, nitrogen is introduced, heating is performed to 40 DEG C, 10 parts of dialkyl siloxane, 4.5 parts of alkyl acrylate, 3 parts of acrylonitrile, 1 part of chloroprene, 2.5 parts of vinyl fluoride and 4 parts of vinyl acetate are added in sequence, heating is performed to 75 DEG C, the temperature is kept constant, and stirring is performed for 20 min to obtain adjusting balance weight castable, the castable is poured into a mold, the foundation balance weight core is completely soaked in the adjusting balance weight castable, and cooling and solidification are performed to obtain the balancing weight. The balancing weight has the good water absorption, the weight of the balancing weight can be increased after water is absorbed, and the weight of the balancing weight is decreased after water is lost.

The invention provides a counterweight block for a washing machine, which relates to the washing machine counterweight block field. The counterweight block comprises a basic counterweight material and an adjusting counterweight material; the basic counterweight material is used as the core material and is wrapped by the adjusting counterweight material; the basic counterweight material comprises 15 parts of slag in a proportion of 3.5 ton / meter, 12 parts of cement as a binder, 5 parts of waste metal particles, 3 parts of broken stone, and 8 parts of emery; the adjusting counterweight material comprises 50 parts of acrylic acid in high purity, 12 parts of dialkyl siloxane, 22 parts of sodium hydroxide, 5 parts of acrylic acid alkyl ester, 12 parts of plant starch, 3 parts of acrylonitrile, 0.3 part of potassium persulphate, 1.5 parts of chloroprene, 3 parts of vinyl fluoride and 5 parts of vinyl acetate. The basic counterweight material guarantees the basic counterweight amount of the counterweight block; the adjusting counterweight material has good water absorption and can increase the counterweight amount of the counterweight block after absorbing water and reduce the counterweight amount of the counterweight block after losing water. According to the invention, the problem of the size of the counterweight amount of the washing machine is solved.

The invention provides a production method of a weight-adjustable washing machine balancing weight. The balancing weight is obtained by mixing 25 parts of slag, 20 parts of paraffin, 6 parts of waste metal crushed particles, 5 parts of broken stone and 5 parts of emery, adding an appropriate amount of water, conducting stirring to obtain a sizing agent, pouring the sizing agent in a mold to form a basic balancing weight core, neutralizing high-purity crylic acid and sodium hydroxide in water, conducting cooling, adding plant starch and potassium persulfate, conducting stirring, injecting nitrogen, heating the mixture to 40 DEG C, sequentially adding dialkyl siloxane, alkyl acrylate, acrylonitrile, chloroprene, vinyl fluoride and vinyl acetate, heating the mixture to 75 DEG C, conducting heat preservation and stirring for 20 min, preparing weight adjustment castable, pouring the castable in the mold, making the basic balancing weight core completely soaked in the weight adjustment castable, and conducting cooling and solidification. The balancing weight has high water absorption performance, the weight of the balancing weight can be increased after water suction, and the weight of the balancing weight is decreased after water loss.

The invention discloses a reactivity control mechanism. The mechanism comprises a spindle motor, a gripper motor, a reducing mechanism, a transmission mechanism, a falling component, a rod position measurement mechanism, a control rod component, a rod falling cushioning mechanism, a balance weight mechanism, a sealing structure, a rod falling executing mechanism, a push rod and a casing, wherein the spindle motor is connected with the reducing mechanism; the transmission mechanism is arranged on an output shaft of the reducing mechanism; the rod position measurement mechanism is meshed with the falling component through a rack; the rod falling executing mechanism is arranged on a connecting piece of the transmission mechanism; the balance weight mechanism is arranged on the falling component; the falling component is cushioned by the rod falling cushioning mechanism at the falling last stage. The reactivity control mechanism drives a set of driving line to move up and down through the spindle motor, the reducing mechanism and the transmission mechanism, and meanwhile prevents various types of high-temperature steam from spreading into the transmission mechanism through the sealing structure.

The utility model discloses a tensile device for side piers and auxiliary piers of a large-span bridge. The tensile device comprises a main beam, piers, a bearing platform, a support, a balance inhaulcable device and a prestressed steel beam device, a one-way pressed support is arranged between the main beam and the tops of the bridge piers, and the main beam and the bridge piers are connected through a vertically-arranged balance inhaul cable device to balance the uplift force of the main beam at the bridge piers; the bridge piers are of concrete structures, and the bridge piers and the bearing platform are connected through a vertically-arranged prestress steel beam device, so that concrete on the bridge piers is in a pressed state. It is guaranteed that the side piers and the auxiliarypiers of the large-span bridge do not generate negative reaction force, support disengaging is avoided, and safe operation of a large-span bridge structure is guaranteed; the structure is simple, thebalance weight of the main beam at the pier is effectively reduced or the balance weight of the main beam is canceled, and good economic performance and popularization value are achieved.

The invention discloses a cylinder external eccentric swing rotary furnace. The rotary furnace comprises a roller; the swing axis of the cylinder external eccentric swing rotary furnace is positioned at the external of the roller; the geometric axis of the roller swings back and forth around the swing axis; and the section shape of the roller is as follows: a distance L from the bottom roller wall section of the roller between the geometric axis and the swing axis to the geometric axle of the roller is smaller than a distance H from the roller wall section parallel to the coplane of the geometric axis and the swing axis of the roller to the geometric axis of the roller. Compared with a circular-section roller, under the condition of the same sectional area of the roller, the section of the roller is adopted to largely reduce the distance from the swing axis to the geometric axis of the roller, so that the occupied space by swing of the rotary furnace is reduced, the needed counterweight is reduced, the sizes of a support device and a driving device are reduced, and the equipment cost is reduced. Meanwhile, the surface area of the roller with the unit length is increased, so that indirect heating of materials in the roller is facilitated, and the equipment production capacity is improved.

The invention discloses a lens cone structure of a large-aperture solar telescope. The lens cone structure comprises a four-leaf beam, an F1 focus, a truss, a four-way joint and a balance weight; thetruss is fixedly connected to the upper portion of the four-way joint; the four-leaf beam is fixedly connected with the upper end of the truss; the F1 focus is fixed to the portion, below the four-leaf beam, of the truss; and the detachable balance weight is arranged at the lower end of the four-way joint. The main lens chamber of the solar telescope is connected with the four-way upper ring; thelens cone pitch axis of the solar telescope is located on the upper center of the four-way joint; and the main lens chamber of the solar telescope is completely exposed on the four-way joint. The lenscone structure is convenient to mount and dismount; the counterweight weight of the lens cone can be effectively reduced, and the influence of the turbulence phenomenon formed by the heat effect of sunlight irradiated on the four-way joint on the imaging quality of the telescope can be effectively reduced; the area of sunlight irradiated on the surface of the truss can be effectively reduced, sothat the influence of turbulence formed by heat effect on the imaging quality of the telescope is reduced.

The invention discloses a multifunctional pipe hoisting machine. The multifunctional pipe hoisting machine comprises a rotation base, a mobile counterweight device, an engine, a pipe carrying device, a driving cab, a cargo boom, a lifting hook, an excavating device and a walking device, wherein an oil cylinder moving left and right is mounted on the rotation base; one end of the oil cylinder moving left and right is stretched out of the rotation base and fixed on a support frame; the support frame is mounted on the rotation base; the support frame slides on the rotation base; a counterweight is fixed on the support frame; a turning oil cylinder tank is formed in the counterweight; a turning oil cylinder is mounted in the turning oil cylinder tank; the lower end of the turning oil cylinder is hinged with the support frame; the upper end of the turning oil cylinder is hinged with the counterweight; the counterweight rotates around a rotation shaft on the counterweight under driving of the turning oil cylinder. The multifunctional pipe hoisting machine has three functions of hoisting, excavating and carrying pipes; the mobile counterweight device is used in cooperation with the multifunctional pipe hoisting machine for realizing two actions; the counterweight is capable of moving left and right and turning backwards, so that the stability of the engine can be improved; the weight of the counterweight is reduced under the conditions with same load; the multifunctional pipe hoisting machine is simple in structure and convenient to manufacture and maintain.

The invention provides a method for washing machine weight balancing with an adjustable balance weight, wherein a balance weight block with the adjustable balance weight is used for the weight balancing of a washing machine, the balance weight block is installed in a cavity disposed in the washing machine, the cavity is connected to a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are controlled by an electromagnetic valve, water is injected into a rotary drum of the washing machine and the electromagnetic valve controlling the water inlet pipe is opened during utilization of the washing machine, the certain amount of water is injected into the cavity, the balance weight block fully absorbs moisture and the balance weight increases; and when the washing machine stops work, the electromagnetic valve controlling the water outlet pipe is opened, the water in the cavity is discharged, the balance weight block loses the moisture, and the balance weight decreases. The method for the washing machine weight balancing with the adjustable balance weight provided by the invention realizes the washing machine weight balancing by the balance weight block with the adjustable balance weight, wherein the balance weight block is constituted of a basic balance weight material and an adjusting balance weight material, the basic balance weight material ensures the basic balance weight of the balance weight block, the adjusting balance weight material has a strong water-absorbing property, the balance weight of the balance weight block will increase when the balance weight block absorbs the moisture, and the balance weight of the balance weight block decreases when the balance weight blocks loses the moisture.

The embodiment of the invention provides a method and device for determining load and overload of a high-altitude operation machine and the high-altitude operation machine, and belongs to the field of high-altitude operation machinery. The high-altitude operation machine comprises a fly jib connected with a working platform. The method for determining load comprises the steps that the state of the fly jib is detected; when the fly jib is in a non-motion state, the pressure of a rodless cavity of an oil cylinder of the fly jib and the angle of the fly jib are detected; and the load of the working platform is determined at least according to the pressure of the rodless cavity and the angle of the fly jig. The corresponding structure does not have the risk of colliding with the working platform, the structure is simple, and the structural weight of the working platform can be reduced.

The invention belongs to the field of airplane structure design and relates to the improvement in an airplane control plane connecting joint which is a detachable composite material double-lug joint with linings. The joint is characterized in that the joint comprises a detachable composite material control plane connecting joint body 1, the two ends of the joint body are connected with the metal linings 2 in a glued manner, a control plane skin 3 is recessed downwards, a notch is formed in the control plane skin 3, and the control plane connecting joint body 1 is connected with the control plane skin 3 through supporting plate nuts. The composite material connecting joint replaces a metal connecting joint, the appearance of the front edge of a control plane is well guaranteed, the joint is located on the front face of the center of a rotary shaft due to the n-shaped joint recessed inwards, and the balance weight of the control plane is reduced.

A mechanical scale has a weighing basket with a platform having entrance and exit ends. A hanging assembly for supporting the weighing basket includes a break-over beam. A counterweight assembly is connected to the break-over beam and is adjustable to select a threshold scale weight required to trigger a scale-operated feature, such as a spray marking mechanism. The counterweight assembly has a weight selection device bracket pivotally mounted to the frame assembly about a pivot point, and a freely moveable counterweight mass supported by the bracket. The freely moveable counterweight mass is moveable from a first position to a second position when the threshold scale weight is exceeded in the weighing basket, thereby causing an abrupt triggering of the scale-operated feature when the threshold scale weight is exceeded in the weighing basket. The freely moveable counterweight mass is a rolling spherical member enclosed within a hollow chamber inside the bracket.

The invention relates to the technical field of mechanical equipment, in particular to a lifting counterweight and a crane. The lifting counterweight is used in the crane. The lifting counterweight comprises a connecting rope and a movable counterweight; one end of the connecting rope is connected with a drum of the crane, the other end of the connecting rope is connected with the movable counterweight, and the drum is rotated to drive the connecting rope to move, so that the connecting rope pulls the movable counterweight to be raised or lowered. The lifting counterweight drives the movable counterweight to be raised by the connecting rope. The device has a simple structure and low cost, and solves the problem of non-synchronization in a way of using an oil cylinder to drive the movable counterweight.

The invention provides a weight-adjustable washing machine counterweight block, which relates to the washing machine counterweight block field. The counterweight block comprises a basic counterweight material and an adjusting counterweight material; the basic counterweight material is used as the core material and is wrapped by the adjusting counterweight material; the basic counterweight material is made by 25 parts of slag in a proportion of 4 ton / meter, 20 parts of paraffin as a binder, 6 parts of waste metal particles, 5 parts of broken stone, and 5 parts of emery; the adjusting counterweight material comprises 55 parts of acrylic acid in high purity, 13 parts of dialkyl siloxane, 23 parts of sodium hydroxide, 5 parts of acrylic acid alkyl ester, 12 parts of plant starch, 3 parts of acrylonitrile, 0.3 part of potassium persulphate, 1.5 parts of chloroprene, 3 parts of vinyl fluoride and 6 parts of vinyl acetate. The basic counterweight material guarantees the basic counterweight amount of the counterweight block; the adjusting counterweight material has good water absorption and can increase the counterweight amount of the counterweight block after absorbing water and reduce the counterweight amount of the counterweight block after losing water. According to the invention, the problem of the size of the counterweight amount of the washing machine is solved.

The invention relates to a second stage foldaway balance mechanism of a pipelayer, and a counterweight bracket is fixed with a stander together. The second stage foldaway balance mechanism of the pipelayer is provided with a first stage cantilever, a second stage cantilever, a first stage hydrocylinder and a second stage hydrocylinder, wherein, the first stage cantilever is hinged with the counterweight bracket by a first stage cantilever pin roll; the second stage cantilever is hinged with the first stage cantilever by a second stage cantilever pin roll, and each counterweight block is connected with the second stage cantilever by two counterweight pin rolls; one end of the first stage hydrocylinder is connected with the stander by a hydrocylinder pin roll, and the other end is connected with the first stage cantilever by the hydrocylinder pin roll; one end of the second stage hydrocylinder is connected with the first stage cantilever by the hydrocylinder pin roll, and the other end is connected with the second stage cantilever by the hydrocylinder pin roll; axes of all pin rolls are in vertical directions. The second stage foldaway balance mechanism of the pipelayer has compact structure, long extension distance of the counterweight, great balance moment of unit weight, and small weight of needed counterweight, thereby the weight of the complete mechanism is small, and the lift capacity of unit mechanism weight is small; a level expansion mode makes the counterweight to not need to overcome the weight of the counterweight in the process of expansion and furl, the load of the hydrocylinder is small and the cylinder diameter of the hydrocylinder is small, and the power for consuming a host is small. The performance level of the complete mechanism can be increased visibly when the second stage foldaway balance mechanism of the pipelaver is used as a balance mechanism, and the manufacturing and the transporting costs are saved.

The invention discloses a car counterweight with the weight capable of being adjusted in a stepless mode. The car counterweight comprises a box body, wherein a water inlet groove is formed in the upper end of the box body; a first water outlet pipeline is arranged at the lower end of the box body; a groove is formed in the inner wall of an elevator shaft; a water inlet pipe is arranged at the position, corresponding to the water inlet groove, in the groove; the water inlet pipe is connected with a water source through a hose; and a second water outlet pipeline is arranged at the position, corresponding to the first water outlet pipeline, in the groove. When people enter a car, the weight in the car is increased, water enters the box body through the water inlet pipe and the water inlet groove, and the weight of the counterweight is increased; and when people leave the car, the weight in the car is reduced, the water inlet groove in the upper end of the box body rotates anticlockwise, the water in the box body enters a recycling box through the first water outlet pipeline and the second water outlet pipeline, and the weight of the counterweight is reduced. Stepless adjustment of the weight of the car is achieved, the counterweight balances the weight of the car, the car can ascend and descend through a small traction machine, and the power of the traction machine is reduced.

The invention discloses a counterweight system of a crane, which comprises a main counterweight (201) fixedly connected with the upper main structure (4) of the crane and an auxiliary counterweight detachably connected with the main counterweight (201). The counterweight (202) also includes a self-detachable power assembly (1) detachably connected to the auxiliary counterweight (202), and the self-detachable power assembly (1) can move the auxiliary counterweight ( 202) Connect or detach the secondary counterweight (202) from the main counterweight (201). By using the self-disassembly and assembly power assembly (1) that comes with the crane to hoist the auxiliary counterweight, the combination and disassembly of the counterweight (2) are completed, which makes the disassembly process easier, improves work efficiency, and reduces use costs. The invention also discloses a crane including the counterweight system.

The invention belongs to the technical field of elevator equipment and relates to an ultra-thin servomotor for an elevator door motor. The ultra-thin servomotor for the elevator door motor solves the technical problems that the design is not reasonable enough and the like in the prior art and comprises a motor casing, wherein a stator is fixedly arranged in the motor casing, a rotary shaft is arranged in the stator in a penetrating manner, a rotor is fixedly arranged on the rotary shaft, one end of the rotary shaft extends out of the motor casing, the motor casing is flat, the stator is shaped like an annular disc body, and the rotor is shaped like a flat annular cover body and is sleeved on the stator. The ultra-thin servomotor has the advantages that 1, the structure is compact, the maintenance and repairing are convenient, the spatial arrangement is facilitated, the mounting of an elevator air-conditioner is facilitated, and the tall elevator car design is adopted; 2, the overall weight is light, the counterweight is reduced, the power of a tractor is reduced, and the operating cost of a driving system is reduced; 3, a magnetic coder is mounted, the connecting structure is simple, and the on-site maintenance is facilitated; and 4, a stator coil adopts the plastic encapsulation process, the gap between a stator winding and the motor casing is reduced, the heat dissipation and anticorrosion capabilities of the stator coil are reinforced.

The invention discloses a hybrid power assisting system of a lifting window. The hybrid power assisting system comprises a window frame, a window sash, driving mechanisms, air spring power assisting mechanisms and balancing weight power assisting mechanisms; the window sash capable of being opened is arranged on the window frame, the driving mechanisms for driving the window sash to be opened and closed are arranged in the window frame on the two sides of the window sash, and the two air spring power assisting mechanisms are arranged in the top of the window frame; the two air spring power assisting mechanisms are opposite in orientation, and the two air spring power assisting mechanisms distributed along the opposite corners of the window sash and connected to the side wall of the window sash; and the balancing weight power assisting mechanisms are further arranged at the tops of the two sides of the window frame and connected to the other opposite corners of the window sash. According to the hybrid power assisting system, by adopting the balance weight scheme of combining the air spring power assisting mechanisms and the balancing weight power assisting mechanisms, the space in the window frame can be saved, the situation that attractiveness is affected due to the fact that the size of the window frame is increased is prevented, and meanwhile the balance weight of air springs can be reduced, so that balance weight errors caused by temperature difference are reduced, therefore, the counterweight ratio of a heavy window sash is ensured to be within the normal load range of a driving electric motor, and the normal operation of the window sash is ensured.

The invention discloses a backup power storage device for a forklift. The forklift is provided with a main power box, and a plurality of main batteries are placed in the main power box. The positive and negative electrodes of the main batteries are connected in sequence and can be separated from each other; the storage device includes: The counterweight frame arranged on the forklift is provided with a backup power supply box, and a number of backup batteries are stored in the backup power supply box. When one of the main batteries in the main power box is dead, the main battery can be removed from the main power box, and a spare battery can be taken out from the backup power box for replacement. At the same time, the dead main battery can be temporarily stored in the spare Inside the power box, the main battery is charged after the forklift has finished its work. The backup battery can not only replace the main battery, but also the weight of the backup power box is superimposed on the counterweight frame, which makes the forklift run more stably. Alternatively, on the premise of satisfying the total weight of the counterweight, the weight of the counterweight of the counterweight frame can be reduced to save costs.

The invention discloses a movable balance weight which comprises a base, a bracket, a balance weight body, a left-right movement oil cylinder and an overturning oil cylinder, wherein the left-right movement oil cylinder is mounted on the base, one end of the left-right movement oil cylinder stretches out of the base and is fixed on the bracket, the bracket is fixed on the base and can slide on the base, the balance weight body is mounted on the bracket, an overturning oil cylinder groove is formed in the balance weight body, the overturning oil cylinder is mounted in the overturning oil cylinder groove, the lower end of the overturning oil cylinder is hinged to the bracket, the upper end of the overturning oil cylinder is hinged to the balance weight body, and the balance weight body rotates around a rotary shaft on the balance weight body under the driving of the overturning oil cylinder. The movable balance weight can move leftwards and rightwards and turn over backwards to enable the gravity center of the balance weight to move backwards so that the weight of the balance weight can be reduced under the same load condition, the structure is simple, and the balance weight is convenient to manufacture and maintain.

According to a method for adjusting the transverse mass center of a parallel storage tank satellite, by designing the filling weights of propellants in different storage tanks of the parallel storage tank satellite, the transverse mass center of the whole satellite in the launching state of a spacecraft is adjusted without additionally adding a balancing weight while filling of the propellants of the spacecraft is completed, by means of the filling weight difference of the same propellant storage tank, the whole-satellite zero-counterweight transverse mass center adjusting strategy is achieved, the load bearing capacity of the spacecraft can be effectively improved, and the method has high engineering application value and prospects.

The invention discloses a high-pressure and constant-pressure two-section rubber membrane sealing air cabinet which is safer and more reliable. The air cabinet comprises a cabinet body, a T-shaped fence, a piston device and sealing rubber membranes, the T-shaped fence can rise and fall along the inner side of the cabinet body, the piston device can rise and fall along the inner side of the T-shaped fence, the sealing rubber membranes seal joints of the piston device and the T-shaped fence and joints of the T-shaped fence and the cabinet body respectively, the T-shaped fence comprises a T-shaped fence upper baffle plate and a T-shaped fence lower baffle plate, the piston device is limited to slide below the T-shaped fence upper baffle plate, and the T-shaped fence lower baffle plate limits the piston device to slide in the T-shaped fence above the T-shaped fence lower baffle plate, namely, the piston device is limited to slide in the area between the two baffle plates of the T-shaped fence. The high-pressure and constant-pressure two-section rubber membrane sealing air cabinet is small in pressure fluctuation, large in use space, stable in running, safe, reliable and simple in construction, and can effectively solve the problems that the pressure of the two-section rubber membrane sealing air cabinet is unstable, the T-shaped fence is fixedly clamped, the space of a one-section rubber membrane sealing air cabinet is wasted and the like.

A device for directly hoisting an object into a house through a tower crane comprises a case, a suspension arm, a bracket, a balance arm, a balance weight, sliding seats, a reel and a motor. The suspension arm and the balance arm are mounted in the case. Slideways are arranged below the suspension arm and the balance arm, and the sliding seats are mounted on the slideways. Goods are hoisted on thesliding seats. The tower crane hoists middle of the upper portion of the case. When the goods are about to be hoisted into the house on a built floor, the tower crane hoists the device and the hung goods to move to the front of a window of the target house. Specially-assigned persons in the target house and a tower crane driver are in wireless contact and cooperate for operation. The suspension arm stretches forwards into the house from the window, meanwhile, the balance arm stretches out of the rear portion of the case, and the two ends of the case are kept balanced. The suspension arm stretches out in place. The bracket at the front end of the suspension arm is placed off to a floor. The sliding seats are controlled by a worker in the house to slide to the front end of the suspension arm, and the goods are placed to touch down. The balance arm only balances the stretching process of the suspension arm, and the weight of the goods is not balanced. The tower crane can directly hoist building materials into the house through the device without a transferring platform. The workload and the building cost are reduced, and the work efficiency is improved.

The invention discloses a multifunctional pipe hoisting machine. The multifunctional pipe hoisting machine comprises a rotation base, a mobile counterweight device, an engine, a pipe carrying device, a driving cab, a cargo boom, a lifting hook, an excavating device and a walking device, wherein an oil cylinder moving left and right is mounted on the rotation base; one end of the oil cylinder moving left and right is stretched out of the rotation base and fixed on a support frame; the support frame is mounted on the rotation base; the support frame slides on the rotation base; a counterweight is fixed on the support frame; a turning oil cylinder tank is formed in the counterweight; a turning oil cylinder is mounted in the turning oil cylinder tank; the lower end of the turning oil cylinder is hinged with the support frame; the upper end of the turning oil cylinder is hinged with the counterweight; the counterweight rotates around a rotation shaft on the counterweight under driving of the turning oil cylinder. The multifunctional pipe hoisting machine has three functions of hoisting, excavating and carrying pipes; the mobile counterweight device is used in cooperation with the multifunctional pipe hoisting machine for realizing two actions; the counterweight is capable of moving left and right and turning backwards, so that the stability of the engine can be improved; the weight of the counterweight is reduced under the conditions with same load; the multifunctional pipe hoisting machine is simple in structure and convenient to manufacture and maintain.