CN212251393U - A hoisting hoist - Google Patents

Abstract

The application provides a hoisting hoist, which relates to the field of water conservancy and hydroelectric machinery and equipment. The hoisting hoist comprises a frame, a synchronous connecting shaft and two lifting point assemblies arranged at intervals on the frame, and the two lifting point assemblies are connected by the synchronous connecting shaft. Each lifting point assembly includes a motor, a reducer, a torque arm and a lifting mechanism for lifting; the motor is mounted on the frame. The lifting mechanism includes a reel. The power input shaft of the reducer is connected to the motor, the power output shaft of the reducer is connected to the reel, the reducer is supported on the top of the frame through a torque arm, and the torque arm is located just below the power input shaft of the reducer. The motor is used to drive the reel to rotate through the reducer, so that the lifting mechanism can be lifted. The reducer is supported on the top of the frame by the torsion arm, and the torsion arm is arranged just below the power input shaft of the reducer. More stable and safer to lift.

Description

A hoisting hoist

technical field

The present application relates to the field of water conservancy and hydroelectric machinery and equipment, and in particular, to a hoisting hoist.

Background technique

At present, the fixed hoisting hoist of the ship lock is driven by the motor through the reducer to drive the drum to rotate, and the wire rope lifts the gate to realize the opening and closing operation requirements. However, the reducer bears various loads such as radial load, vertical load, rotational load, and impact load.

Utility model content

The embodiments of the present application provide a hoisting hoist, so as to improve the problem that the reducer of the existing hoisting hoist is subjected to complex forces during operation.

An embodiment of the present application provides a hoisting hoist, which includes a frame, a synchronous connection shaft, and two lifting point assemblies arranged at intervals on the frame, and the two suspension point assemblies are connected by the synchronous connection shaft. Each lifting point assembly includes a motor, a reducer, a torque arm and a lifting mechanism for lifting; the motor is mounted on the frame. The lifting mechanism includes a reel. The power input shaft of the reducer is connected to the motor, the power output shaft of the reducer is connected to the reel, the reducer is supported on the top of the frame through a torque arm, and the torque arm is located just below the power input shaft of the reducer. The motor is used to drive the reel to rotate through the reducer, so that the lifting mechanism can be lifted.

In the above technical solutions, generally, the reducer of the hoisting hoist will bear various loads such as radial load, vertical load, rotational load, and impact load during the operation process, especially the power input shaft of the reducer. The reducer is supported on the top of the frame by the torsion arm and the torque arm is arranged just below the power input shaft of the reducer, so that the radial load, vertical load and impact load on the reducer are determined by the reel long shaft bearing seat and The torsion arm bears, that is, the reel long shaft bearing seat and the torsion arm can bear and release the radial load, vertical load and impact load of the reducer, and the reducer only bears the rotating load, which can make the transmission of the hoisting hoist. More stable, more stable and safe lifting. And it can improve the service life of the reducer, reduce the failure rate of the whole hoisting hoist, and reduce the overall cost. And the two lifting point assemblies are connected through the synchronous connecting shaft, so that the synchronous working transmission efficiency of the hoisting hoist is satisfied.

In addition, the hoisting hoist of the embodiment of the present application also has the following additional technical features:

In some embodiments of the present application, the torque arm is detachably connected to the reducer; and/or the torque arm is detachably connected to the frame.

In the above technical solution, the detachable connection between the torque arm and the reducer facilitates the installation and disassembly of the reducer, and at the same time facilitates the maintenance of the reducer. Since the torsion arm bears a relatively complex load, it needs frequent maintenance. The torsion arm is detachably connected to the frame, which is convenient for the maintenance of the torsion arm.

In some embodiments of the present application, the speed reducer and the torque arm are connected by pins or bolts.

In the above technical solution, the reducer and the torsion arm are detachably connected through bolts, the connection method is simple, and the cost of disassembly, installation and maintenance is low.

In some embodiments of the present application, one end of the synchronous connection shaft is connected with the power input shaft of the reducer in one suspension point assembly, and the other end of the synchronous connection shaft is connected with the power input shaft of the reducer in another suspension point assembly .

In the above technical solution, the setting of the synchronous connection shaft is convenient to realize the synchronous drive of the two lifting point assemblies, and the two ends of the synchronous connection shaft are respectively connected with the power input shaft of the reducer. The torque of the power input shaft relative to the power output shaft is low, which can effectively reduce the manufacturing cost and procurement cost of the synchronous connection shaft.

In some embodiments of the present application, the lifting mechanism further includes a pulley assembly, and the pulley assembly includes a fixed pulley; the drum is located above the frame, and the fixed pulley is rotatably connected to the frame and located above the frame.

In the above technical solution, both the reel and the fixed pulley are on the top of the frame, which is convenient for the maintenance of the reel and the fixed pulley.

In some embodiments of the present application, the frame includes a first support portion and a second support portion, and both ends of the roll are rotatably supported on the first support portion and the second support portion, respectively.

In the above technical solution, the first support part and the second support part rotate to support the two ends of the reel. When the reducer needs to be overhauled, after the reducer and the reel are disassembled, the reel can still be supported by the frame, without the need for The reel, the lifting mechanism, etc. are all disassembled together with the reducer, which is convenient for the maintenance of the reducer, and can also reduce the workload of the maintenance personnel.

In some embodiments of the present application, the hoisting hoist further includes a motor brake for releasing or braking the motor.

In the above technical solution, the provision of the motor brake can brake the motor in time when any one of the components such as the hoisting mechanism and the reducer fails, so as to ensure the safety of heavy objects such as the gate and the hoisting hoist.

In some embodiments of the present application, the hoisting hoist further includes a drum brake, the drum brake is mounted on the frame, and the drum brake is used to release or brake the drum.

In the above technical scheme, the setting of the reel brake can stop the reel in time when any one of the components such as the lifting mechanism and the reducer fails, so as to prevent the reel from rotating under the gravity of the heavy object to release the heavy object and injure the underside of the heavy object. to ensure the safety of personnel, gates and other heavy objects and hoisting hoists.

In some embodiments of the present application, the hoisting machine further includes a height limiter and a load limiter, the height limiter is used to limit the lifting height of the hoisting mechanism, and the height limiter is arranged at one end of the drum away from the speed reducer; The load limiter is used to limit the lifting load of the hoisting mechanism, and the load limiter is arranged at the end of the drum away from the reducer.

In the above technical solutions, the height limiter can ensure that the hoisting hoist is lifted to a suitable height, avoiding excessive lifting or lowering of heavy objects, and the load limiter can ensure that the hoisting hoist has an appropriate lifting weight and avoid heavy objects. Excessive weight will damage the lifting mechanism and avoid safety accidents during the lifting process.

In some embodiments of the present application, the hoisting hoist further includes a connecting shaft support for supporting the synchronous connecting shaft so that the synchronous connecting shaft and the output shaft of the motor are coaxially arranged.

In the above technical solution, the setting of the connecting shaft support can avoid the situation of the synchronous connecting shaft being out of alignment and unstable due to the too large length of the synchronous connecting shaft, so that the synchronous transmission shaft can better ensure the reels of the two lifting point assemblies. Synchronized rotation.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following drawings will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic diagram of a first perspective of a hoisting hoist provided by an embodiment of the present application;

Fig. 2 is the schematic diagram of the first angle of view of the hoisting hoist in the prior art;

Fig. 3 is the enlarged view of III place in Fig. 1;

Fig. 4 is the schematic diagram of the second angle of view of the hoisting hoist in the prior art;

5 is a schematic diagram of a second viewing angle of the hoisting hoist provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a third viewing angle of the hoisting hoist provided by the embodiment of the present application.

Icon: 100-hoisting hoist; 10-frame; 11-third connection part; 12-fourth connection part; 13-first support part; 14-second support part; 15-anchor bolt; 20-synchronous connection shaft; 30-suspension point assembly; 31-motor; 32-reducer; 321-first connection part; 322-second connection part; 33-lifting mechanism; 331-reel; 332-fixed pulley; 333-moving pulley; 334-wire rope; 40-torque arm; 50-connecting shaft support; 60-motor brake; 70-reel brake; 80-height limiter; 90-load limiter.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the application is usually placed in use, or the Orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product of the application is commonly placed in use, is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present application. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Example

As shown in FIG. 1 , an embodiment of the present application provides a hoisting hoist 100 . The hoisting hoist 100 includes a frame 10 , a synchronous connection shaft 20 and two lifting points arranged on the frame 10 at intervals Assembly 30, two lifting point assemblies 30 are connected by the synchronous connection shaft 20; each lifting point assembly 30 includes a motor 31, a reducer 32, a torque arm 40 and a lifting mechanism 33 for lifting; the motor 31 is installed on the frame 10 . The lifting mechanism 33 includes a reel 331, the power input shaft of the reducer 32 is connected to the motor 31, the power output shaft of the reducer 32 is connected to the reel 331, and the reducer 32 is supported above the frame 10 through the torsion arm 40. 40 is located just below the power input shaft of the reducer 32; the motor 31 is used to drive the reel 331 to rotate through the reducer 32, so that the lifting mechanism 33 is lifted.

The hoisting hoist 100 is a hoisting device that lifts or lowers heavy objects by winding up the wire rope 334 or the like through the drum 331 of the hoisting mechanism 33 . The hoisting hoist 100 uses the motor 31 as a driving device, however, with respect to the hoisting speed of the hoisting hoist 100, the reel 331 of the hoisting mechanism 33 is directly driven by the motor 31 to rotate to make the hoisting mechanism Lifting 33 will make the rotation speed of the drum 331 too fast, so that the lifting speed of the lifting mechanism 33 will be too fast, and the stability and safety performance of the lifting will be reduced. Therefore, a reducer 32 is provided between the motor 31 and the reel 331, and the motor 31 drives the reel 331 to rotate through the reducer 32, so that the rotational speed of the reel 331 is reduced relative to the rotational speed of the motor 31, so that the lifting mechanism 33 can be stably and safely lifting weights. In the prior art, as shown in FIG. 2 , when the motor 31 , the reel 331 and the reducer 32 are arranged, the bottom end of the reducer 32 is usually directly installed on the frame 10 , and the reducer 32 and the reel 331 are used. Through the direct connection of the bearing, the power output shafts of the reducer 32 of the two lifting point assemblies 30 are connected through the synchronous connection shaft 20. During the operation of the hoisting hoist 100, the motor 31 drives the reel 331 to rotate through the reducer 32 to lift the hoist. The mechanism 33 lifts the heavy object, so that the reducer 32 bears various loads such as radial load, vertical load, rotational load, and impact load.

In this embodiment, the long axis of the reel 331 is connected with the power output shaft of the reducer 32 through the bearing seat (the power output shaft of the reducer 32 is a hollow shaft) through a bearing, and the motor 31 is connected with the power input shaft of the reducer 32 , the reducer 32 is supported on the top of the frame 10 by the torque arm 40 and the torque arm 40 is arranged directly below the power input shaft of the reducer 32, so that the impact load on the reducer 32 is borne by the torque arm 40, that is, the torque The arm 40 can release the impact load borne by the reducer 32 ; the bearing seat on the long axis side of the reel 331 bears the radial load and the vertical load of the reducer 32 . The reducer 32 only bears the rotational load, which can make the transmission of the hoist hoist 100 more stable, and the lifting more stable and safe. The reduced load of the reducer 32 can increase the service life of the reducer 32, reduce the failure rate of the whole hoisting hoist 100, and reduce the overall cost. And the two lifting point assemblies 30 are connected through the synchronous connection shaft 20, so that the working transmission efficiency of the hoisting hoist 100 is improved.

In this embodiment, the torque arm 40 is detachably connected to the reducer 32 ; the torque arm 40 is detachably connected to the frame 10 . The detachable connection between the torque arm 40 and the reducer 32 facilitates the installation and disassembly of the reducer 32 and facilitates the maintenance of the reducer 32 . Since the torsion arm 40 bears a relatively complex load and needs to be maintained and replaced frequently, the torsion arm 40 is detachably connected to the frame 10 to facilitate maintenance and replacement of the torsion arm 40 . In other embodiments, one of the reducer 32 and the frame 10 may be detachably connected to the torque arm 40 , for example, the reducer 32 and the torque arm 40 may be detachably connected.

Wherein, as shown in FIG. 3 , the speed reducer 32 is provided with a first connection portion 321 and a second connection portion 322 arranged at relative intervals, the first connection portion 321 is provided with a first connection hole, and the second connection portion 322 is provided with a first connection hole. There is a second connection hole, the second connection hole and the second connection hole are arranged coaxially; one end of the torsion arm 40 is provided with a third connection hole, the third connection hole is located between the first connection hole and the second connection hole, and the third connection hole is located between the first connection hole and the second connection hole. The connecting hole is coaxially arranged with the first connecting hole and the second connecting hole; the reducer 32 and the torsion arm 40 are detachably connected through pins or bolts, and the pins or bolts pass through the first connecting hole, the third connecting hole and the the second connection hole. The first connection portion 321 and the second connection portion 322 can limit the torsion arm 40 in the spaced direction, and facilitate the alignment of the first connection hole, the second connection hole and the third connection hole, and facilitate the installation of bolts.

The rack 10 is provided with a third connection portion 11 and a fourth connection portion 12 arranged at relative intervals, the first connection portion 321 is provided with a fourth connection hole, the fourth connection portion 12 is provided with a fifth connection hole, the fourth connection The connecting hole and the fifth connecting hole are arranged coaxially; the other end of the torque arm 40 is provided with a sixth connecting hole, the sixth connecting hole is located between the fourth connecting hole and the fifth connecting hole, the fifth connecting hole and the fourth connecting hole The frame 10 and the torsion arm 40 are detachably connected by bolts, and the bolts pass through the fourth connection hole, the sixth connection hole and the fifth connection hole in sequence. The third connecting portion 11 and the fourth connecting portion 12 can limit the torsion arm 40 in the spaced direction, and facilitate the alignment of the fourth, fifth and sixth connecting holes and facilitate the installation of bolts. The reducer 32, the frame 10 and the torsion arm 40 are detachably connected through bolts, the connection method is simple, and the cost of disassembly, installation and maintenance is low.

Further, with continued reference to FIG. 1 , one end of the synchronous connection shaft 20 is connected with the power input shaft of the reducer 32 in one lifting point assembly 30 , and the other end of the synchronous connection shaft 20 is connected with the reducer 32 in the other suspension point assembly 30 . the power input shaft connection. In this embodiment, the two ends of the synchronous connection shaft 20 are connected with the power input shaft of the corresponding reducer 32 through a coupling such as a toothed coupling. The setting of the synchronous connecting shaft 20 is convenient to realize the synchronous driving of the two lifting point assemblies 30, and the two ends of the synchronous connecting shaft 20 are respectively connected with the power input shaft of the reducer 32. Under the condition that the starting efficiency is not affected, the The torque of the power input shaft relative to the power output shaft is low, which can effectively reduce the manufacturing cost and procurement cost of the synchronous connection shaft 20 .

Since the synchronous connection shaft 20 has a certain length, after the two ends of the synchronous connection shaft 20 are connected with the power input shaft of the reducer 32, under the action of its own gravity or other factors, the middle of the synchronous connection shaft 20 may bend, causing the synchronous connection shaft 20 to bend. The connecting shaft 20 and the output shaft of the motor 31 are not arranged coaxially, so that the synchronous connecting shaft 20 not only rotates around its own axis, but also rotates around the output shaft of the motor 31, making the transmission unstable and affecting the lifting of the whole machine. In this embodiment, the hoisting hoist 100 further includes a connecting shaft support 50 for supporting the synchronous connecting shaft 20 so that the synchronous connecting shaft 20 and the output shaft of the motor 31 are coaxially arranged. The setting of the connecting shaft support 50 can avoid the situation that the synchronous connecting shaft 20 is not concentric and unstable because the length of the synchronous connecting shaft 20 is too large, so that the synchronous transmission shaft can better ensure the reels 331 of the two lifting point assemblies 30 Synchronized rotation.

Further, the lifting mechanism 33 also includes a pulley assembly, the pulley assembly includes a fixed pulley 332, a fixed pulley 332 and a wire rope 334, one end of the wire rope 334 is connected to the drum 331, and the other end of the wire rope 334 is wound around the movable pulley 333 and the fixed pulley 332 in turn. .

As shown in FIG. 4 , in the prior art, the fixed pulley 332 is rotatably connected to the lower part of the frame 10 , and the reel 331 is arranged above the frame 10 . The maintenance of the drum 331 and the fixed pulley 332 increases the difficulty of maintenance for the staff, and the maintenance from the bottom of the frame 10 is not easy to operate, which increases the difficulty of maintenance.

In this embodiment, as shown in FIG. 5 , the reel 331 is located above the frame 10 , and the fixed pulley 332 is rotatably connected to the frame 10 and located above the frame 10 . The movable pulley 333 is provided with a heavy object, and the reel 331 can be rotated to wind up the wire rope 334 to change the height position of the movable pulley 333 to lift or lower the heavy object. Both the reel 331 and the fixed pulley 332 are located above the frame 10 , which facilitates the maintenance of the reel 331 and the fixed pulley 332 .

Referring to FIG. 2, in the prior art, the reel 331 is connected to the reducer 32, and there is no support between the reel 331 and the reducer 32. When the reducer 32 or the reel 331 needs to be repaired, the reducer 32 and the reducer 32 need to be repaired. The 331 rolls of the reel were disassembled, which increased the difficulty of maintenance and made the staff do more meaningless work.

In this embodiment, as shown in FIGS. 1 and 6 , the frame 10 includes a first support portion 13 and a second support portion 14 , and both ends of the reel 331 are rotatably supported on the first support portion 13 and the second support portion, respectively. Section 14. In this embodiment, the reel 331 and the power output shaft of the reducer 32 are connected by a bearing, and the bearing is rotatably provided on the first support part 13 , and the first support part 13 is the long axis of the reel 331 and the reducer 32 The bearing seat between the power output shafts, so that the radial load, vertical load and impact load of the reducer 32 are borne by the first support portion 13 and the torsion arm 40, that is, the first support portion 13 and the torsion arm 40 are borne and released. In addition to the radial load, vertical load and impact load that the reducer 32 bears, the reducer 32 only bears the rotational load. The first support portion 13 and the second support portion 14 rotate to support both ends of the reel 331 . For example, when the reducer 32 needs to be repaired, after the reducer 32 and the reel 331 are disassembled, the reel 331 can still be used by the frame 10 . For support, it is not necessary to disassemble the drum 331, the lifting mechanism 33, etc. together with the reducer 32, which facilitates the maintenance of the reducer 32 and can also reduce the workload of the maintenance personnel. Similarly, when the reel 331 needs to be repaired, it is only necessary to remove the reel 331 from the first support portion 13 and the second support portion 14 , and the reducer 32 can still be supported by the first support portion 13 and the torsion arm 40 . , does not need to be disassembled.

Further, the hoist 100 further includes a motor brake 60 for releasing or braking the motor 31 . The motor brake 60 is provided between the output end of the motor 31 and the synchronous connection shaft 20 . The provision of the motor brake 60 can stop the motor 31 in time when any one of the components such as the hoisting mechanism 33 and the reducer 32 fails, so as to ensure the safety of the hoisting hoist 100 . Of course, the motor brake 60 can also brake the motor 31 when the hoisting hoist 100 stops hoisting (the whole machine is in a normal state), so that the hoisting height of the hoisting mechanism 33 can be stably maintained at a certain position. The structure of the motor brake 60 may refer to the related art.

Further, the hoisting hoist 100 further includes a reel brake 70 , the reel brake 70 is installed on the frame 10 , and the reel brake 70 is used for releasing or braking the reel 331 . The setting of the reel brake 70 can stop the reel 331 in time when any one of the components such as the lifting mechanism 33 and the reducer 32 fails, so as to prevent the reel 331 from rotating under the gravity of the heavy object to release the heavy object and injure the underside of the heavy object. to ensure the safety of personnel and the hoist 100. When the hoisting hoist 100 is working normally, the reel brake 70 is in the state of releasing the spool 331. When any one of the components such as the lifting mechanism of the hoisting hoist 100, the reducer 32, etc. fails, the reel 331 is released. The drum brake 70 brakes the drum 331 in time. Of course, the drum brake 70 can also brake the drum 331 when the hoisting hoist 100 stops hoisting (the whole machine is in a normal state), so that the hoisting height of the hoisting mechanism 33 can be stably maintained at a certain level Location. The structure of the reel brake 70 may refer to the related art.

Further, the hoist 100 further includes a height limiter 80 and a load limiter 90 , the height limiter 80 is used to limit the lifting height of the lifting mechanism 33 , and the height limiter 80 is provided on the drum 331 away from the speed reducer 32 . The load limiter 90 is used to limit the lifting load of the hoisting mechanism 33 , and the load limiter 90 is arranged at one end of the drum 331 away from the reducer 32 . The height limiter 80 can ensure that the hoist hoist 100 is lifted to an appropriate height, avoiding excessive lifting or lowering of heavy objects, and the load limiter 90 can ensure that the hoisting hoist 100 has a proper lifting weight and avoid the weight of heavy objects If it is too large, it will damage the lifting mechanism 33 and avoid safety accidents during the lifting process. In this embodiment, the height and load limits are performed by different components ie the height limiter 80 and the load limiter 90 may be two different components. The height limiter 80 may be a distance sensor, a position sensor, or the like, and the load limiter 90 may be a gravity sensor or the like. In other embodiments, the height limiter 80 and the load limiter 90 are integrated on one limiter, ie, one limiter has both functions of limiting height and limiting load. When the lifting height (the highest height of lifting or the lowest height of falling) reaches the target height, the motor 31 stops rotating, so that the reel 331 is no longer reeled. When the hoisted weight reaches or exceeds the maximum load of the hoisting mechanism 33 , the system alarms or the motor 31 stops rotating to prevent the hoisting mechanism 33 from being overloaded.

In this embodiment, the frame 10 is connected to the foundation or other structures through anchor bolts 15, so that the entire hoist 100 is stabilized on the foundation or other structures.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (10)

1. A hoisting hoist, characterized in that it comprises a frame, a synchronous connection shaft and two lifting point assemblies arranged at intervals on the frame, and the two lifting point assemblies are connected through the synchronous connection shaft connection; Each lifting point assembly includes a motor, a reducer, a torsion arm and a hoisting mechanism for lifting; the motor is mounted on the frame; The lifting mechanism includes a reel, the power input shaft of the reducer is connected to the motor, the power output shaft of the reducer is connected to the reel, and the reducer is supported on the reel through the torsion arm. Above the frame, the torsion arm is located just below the power input shaft of the reducer; The motor is used to drive the reel to rotate through the speed reducer, so as to lift the lifting mechanism. 2 . The hoisting hoist according to claim 1 , wherein the torsion arm is detachably connected to the reducer; and/or the torsion arm is detachably connected to the frame. 3 . 3 . The hoisting hoist according to claim 2 , wherein the speed reducer and the torsion arm are connected by pins or bolts. 4 . 4. The hoisting hoist according to claim 1, wherein one end of the synchronous connection shaft is connected with the power input shaft of the reducer in a lifting point assembly, and the other end of the synchronous connection shaft Connect with the power input shaft of the reducer in the other lifting point assembly. 5. The hoisting hoist according to claim 1, wherein the lifting mechanism further comprises a pulley assembly, and the pulley assembly includes a fixed pulley; The reel is located above the frame, and the fixed pulley is rotatably connected to the frame and located above the frame. 6 . The hoisting hoist according to claim 1 , wherein the frame comprises a first support part and a second support part, and two ends of the drum are respectively rotatably supported on the first support part. 7 . a support part and the second support part. 7 . The hoisting hoist according to claim 1 , wherein the hoisting hoist further comprises a motor brake, and the motor brake is used to release or brake the motor. 8 . 8 . The hoisting hoist according to claim 1 , wherein the hoisting hoist further comprises a reel brake, the reel brake is installed on the frame, and the reel A brake is used to release or brake the spool. 9 . The hoisting hoist according to claim 1 , wherein the hoisting hoist further comprises a height limiter and a load limiter, and the height limiter is used to limit the lifting mechanism. 10 . Lifting height, the height limiter is arranged at one end of the drum away from the speed reducer; The load limiter is used to limit the hoisting load of the lifting mechanism, and the load limiter is arranged at one end of the drum away from the speed reducer. 10 . The hoisting hoist according to claim 1 , wherein the hoisting hoist further comprises a connecting shaft support, and the connecting shaft support is used to support the synchronous connecting shaft to The synchronous connection shaft is arranged coaxially with the output shaft of the motor.

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