CN216737284U

CN216737284U - Hoisting equipment

Info

Publication number: CN216737284U
Application number: CN202120980497.3U
Authority: CN
Inventors: 罗文振; 许军; 王赟冰; 颜宇飞
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-06-14
Anticipated expiration: 2031-05-10

Abstract

The utility model relates to a hoist and mount technical field in the cabin discloses a lifting device. The hoisting equipment comprises a hoisting beam, a hoisting mechanism, a fixed rope and a hoisting rope, wherein a support rod is arranged on the hoisting beam, and a first roller and a second roller are arranged on the support rod at intervals; the hoisting mechanism is arranged at the first end of the lifting beam, the fixed rope is connected to the first roller, one end of the fixed rope is fixed at the first end of the lifting beam, and the other end of the fixed rope is fixed at the top surface close to the second end of the lifting beam; the second end of lifting beam is provided with the third gyro wheel, and the hoist and mount rope is connected in second gyro wheel and third gyro wheel, and hoist and mount rope one end is connected in hoisting mechanism, and the other end is used for connecting and treats the hoist and mount thing, and hoisting mechanism can drive the hoist and mount rope and hoist and treat the hoist and mount thing. The utility model discloses simple structure, the equipment is convenient, can assemble in narrow cabin, and the bearing capacity is big, has realized the hoist and mount installation of fan gear box spare part and main equipment in the cabin, satisfies the user demand.

Description

Hoisting equipment

Technical Field

The utility model relates to a hoist and mount technical field in the cabin especially relates to a lifting device.

Background

A fan gear box is commonly used in the wind power double-fed set, so that the output rotating speed is effectively controlled, and the performance requirement of the generator is reduced. However, the structure of the fan gear box is complex, and the high failure rate always troubles operation and maintenance personnel in the use process. When the tower is maintained, workers need to complete maintenance of the fan gear box in the cabin, and for the lifting operation in the maintenance operation, the lifting operation is limited by the space and structural arrangement of the cabin, and a lifting device with compact structure and large bearing capacity is needed. In the prior art, a chain block is usually adopted for hoisting a fan gear box, but the tonnage that the chain block can allow hoisting is low, the weight of a chain is large, the field installation is difficult, and the use requirement cannot be met.

Based on this, there is a need for a hoisting device to solve the above existing problems.

SUMMERY OF THE UTILITY MODEL

Based on above, the utility model aims at providing a lifting device, simple structure, the equipment is convenient, can assemble in narrow cabin, and the bearing capacity is big, has realized the hoist and mount installation of fan gear box spare part and main equipment in the cabin, satisfies the user demand.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a lifting device comprising:

the lifting beam is provided with a support rod, and a first roller and a second roller are arranged on the support rod at intervals;

the hoisting mechanism is arranged at the first end of the lifting beam;

the fixed rope is connected to the first roller, one end of the fixed rope is fixed to the first end of the lifting beam, and the other end of the fixed rope is fixed to the top surface close to the second end of the lifting beam;

the second end of the lifting beam is provided with a third idler wheel, the lifting rope is connected to the second idler wheel and the third idler wheel, one end of the lifting rope is connected to the hoisting mechanism, the other end of the lifting rope is used for being connected with an object to be hoisted, and the hoisting mechanism can drive the lifting rope to hoist the object to be hoisted;

when the hoisting mechanism drives the hoisting rope to move towards the direction close to the hoisting mechanism, the hoisting rope enables the object to be hoisted to ascend;

when the hoisting mechanism drives the hoisting rope to move towards the direction far away from the hoisting mechanism, the hoisting rope enables the object to be hoisted to fall.

As a preferred technical scheme of the hoisting equipment, the hoisting equipment further comprises a rotating assembly, and the rotating assembly is rotatably arranged at the bottom of the hoisting beam close to the first end.

As a preferred technical scheme of the hoisting equipment, the rotating assembly comprises a base, a rotating shaft and a fixed shaft, the fixed shaft is arranged on the base, the hoisting beam is fixed above the rotating shaft, and the fixed shaft is provided with a mounting hole; the rotating shaft is rotatably arranged in the mounting hole through a bearing, and when the rotating shaft rotates relative to the fixed shaft, the object to be hoisted moves along the horizontal direction.

As an optimal technical scheme of the hoisting equipment, a first flange is arranged at the end part of the rotating shaft exposed out of the mounting hole, a second flange matched with the first flange is arranged on the fixed shaft, and a locking piece penetrates through the first flange and the second flange to lock the rotating angle of the rotating shaft relative to the fixed shaft.

As a preferable technical scheme of the hoisting equipment, the hoisting equipment further comprises a support assembly, wherein the support assembly comprises a rotating ring and a first support column and a second support column which are connected through the rotating ring, the first support column and the second support column are arranged on two opposite sides of the rotating ring, and the rotating ring is rotatably arranged on the fixed shaft;

one side of the first supporting column, which is far away from the rotating ring, is connected to the hoisting mechanism, and one end of the second supporting column, which is far away from the rotating ring, is connected to the lifting beam.

As a preferred technical solution of the hoisting apparatus, the hoisting beam comprises a first hoisting arm and a second hoisting arm, and the first hoisting arm and the second hoisting arm are slidably connected.

As a preferable technical scheme of the hoisting equipment, the first lifting arm is provided with a sliding chute, and the second lifting arm can be slidably arranged in the sliding chute;

the side wall of the sliding groove is provided with a first locking hole, the side wall of the second lifting arm is provided with a plurality of second locking holes at intervals, and a bolt penetrates through the first locking hole and is selectively fixed in the second locking holes so as to adjust the relative distance between the first lifting arm and the second lifting arm.

As a preferred technical scheme of the hoisting equipment, the first locking holes are waist-shaped holes, the distance between every two second locking holes is matched with the length of the waist-shaped holes, and the two bolts penetrate through two ends of the waist-shaped holes and are selectively fixed in the two adjacent second locking holes.

As an optimal technical scheme of hoisting equipment, the hoisting mechanism comprises a hoisting drum, a driving piece and a gear shaft, wherein the gear shaft is connected to the hoisting drum in a meshed mode, and the driving piece is connected to the gear shaft in a driving mode.

As an optimal technical scheme of the hoisting equipment, triangular supporting blocks are installed on two sides of the supporting rod and fixed on the hoisting beam, and the triangular supporting blocks are connected through bolts.

The utility model has the advantages that:

the utility model provides a hoisting device, this hoisting device include lifting beam, hoist mechanism, fixed rope and hoist and mount rope. The hoisting mechanism is arranged at the first end of the lifting beam, a support rod is arranged on the lifting beam, and a first roller and a second roller are arranged on the support rod at intervals. The fixed rope is connected with the first roller in a driving mode, one end of the fixed rope is fixed to the first end of the lifting beam, and the other end of the fixed rope is fixed to the top face close to the second end of the lifting beam; the fixed rope is used for preventing the lifting beam from inclining, and the stability of the equipment is improved. The second end of lifting beam is provided with the third gyro wheel, and hoist and mount rope drive is connected in second gyro wheel and third gyro wheel, and hoist and mount rope one end is connected in hoisting mechanism, and the other end is used for connecting the thing of waiting to hoist and mount. When the hoisting mechanism works, the hoisting rope can lift an object to be hoisted when the hoisting mechanism drives the hoisting rope to move towards the direction close to the hoisting mechanism; when the hoisting mechanism drives the hoisting rope to move towards the direction far away from the hoisting mechanism, the hoisting rope can enable the object to be hoisted to fall. The hoisting mechanism can allow the hoisting tonnage to be larger, so that the hoisting of the heavy object in the engine room is realized, the manual driving hoisting is not needed, and the working efficiency is improved. The utility model discloses simple structure, the equipment is convenient, can assemble in narrow cabin, and the bearing capacity is big, has realized the hoist and mount installation of fan gear box spare part and main equipment in the cabin, satisfies the user demand.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural view of a hoisting device provided in an embodiment of the present invention;

fig. 2 is a cross-sectional view of a rotating assembly according to an embodiment of the present invention.

The figures are labeled as follows:

1. lifting the lifting beam; 11. a third roller; 12. a first boom; 121. a first locking hole; 13. a second lifting arm; 131. a second locking hole; 14. a first end; 15. a second end;

2. a support bar; 21. a first roller; 22. a second roller;

3. a hoisting mechanism; 31. a hoisting drum; 311. a first gear tooth; 32. a drive member; 33. a gear shaft; 331. a second gear tooth; 34. a support;

4. fixing a rope;

5. hoisting a rope;

6. a rotating assembly; 61. a base; 62. a rotating shaft; 621. a first flange; 63. a fixed shaft; 631. a second flange; 64. a first lock nut; 65. a second lock nut; 66. a thrust bearing; 67. a bushing;

7. a support assembly; 71. a rotating ring; 72. a first support column; 73. a second support column; 74. a deep groove ball bearing;

8. a triangular supporting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides a hoisting device, which includes a lifting beam 1, a support rod 2, a hoisting mechanism 3, a fixed rope 4 and a hoisting rope 5.

Specifically, the hoisting mechanism 3 is disposed at the first end 14 of the lifting beam 1, the supporting rod 2 is disposed on the lifting beam 1, and the first roller 21 and the second roller 22 are disposed on the supporting rod 2 at intervals. The fixed rope 4 is connected to the first roller 21, one end of the fixed rope 4 is fixed to the first end 14 of the lifting beam 1, and the other end of the fixed rope 4 is fixed to the top surface close to the second end 15 of the lifting beam 1; the fixing rope 4 is used for preventing the lifting beam 1 from inclining, and the stability of the equipment is improved. In this embodiment, the first end 14 of the lifting beam 1 is provided with a bolt, the bolt head is provided with a rope threading hole, and the fixing rope 4 is fixed in the rope threading hole. The second end 15 of lifting beam 1 is provided with third gyro wheel 11, and hoist and mount rope 5 is connected in second gyro wheel 22 and third gyro wheel 11, and hoist and mount 5 one end is connected in hoisting mechanism 3, and the other end is used for connecting the thing of waiting to hoist and mount. When the hoisting mechanism 3 drives the hoisting rope 5 to move towards the direction close to the hoisting mechanism 3, the hoisting rope 5 can lift an object to be hoisted; when the hoisting mechanism 3 drives the hoisting rope 5 to move towards the direction far away from the hoisting mechanism 3, the hoisting rope 5 can enable the object to be hoisted to fall.

Because the hoisting mechanism 3 can allow the hoisting tonnage to be larger, the hoisting of the heavy object in the engine room is realized, the hoisting is not required to be carried out manually, and the working efficiency is improved. This embodiment simple structure, the equipment is convenient, can assemble in narrow cabin, and the bearing capacity is big, has realized the hoist and mount maintenance of cabin interior fan gear box, satisfies the user demand. In this embodiment, the fixed rope 4 and the hoisting rope 5 are both steel wire ropes.

Preferably, the triangular support blocks 8 are installed on two sides of the support rod 2, the triangular support blocks 8 are fixed on the lifting beam 1, the triangular support blocks 8 are connected through bolts, and the triangular support blocks 8 are used for preventing the support rod 2 from inclining and increasing the structural strength.

Specifically, the hoisting mechanism 3 includes a hoisting drum 31, a driving member 32 and a gear shaft 33, the gear shaft 33 is engaged with the hoisting drum 31, and the driving member 32 is drivingly connected to the gear shaft 33. In this embodiment, the driving member 32 is a motor, and the gear shaft 33 is fixed to an output shaft of the motor. The hoisting mechanism 3 further comprises a bracket 34, the bracket 34 is fixed at the first end 14 of the hoisting beam 1 through a screw, the driving element 32 is fixed on the bracket 34, two ends of the hoisting drum 31 are rotatably mounted on the bracket 34, two ends of the hoisting drum 31 are respectively provided with a first gear tooth 311, the gear shaft 33 is provided with a second gear tooth 331 matched with the first gear tooth 311, and the first gear tooth 311 is meshed with the second gear tooth 331. When the hoisting drum 31 rotates towards the direction of winding the hoisting rope 5, the hoisting rope 5 enables the object to be hoisted to rise; when the hoisting drum 31 rotates in the direction of releasing the hoisting rope 5, the hoisting rope 5 descends the object to be hoisted. The hoisting mechanism 3 is small in size and convenient to assemble, the driving piece 32 directly controls the hoisting drum 31 to rotate through the gear shaft 33, the rotating direction and the rotating speed of the hoisting drum 31 are easy to control, and the operation is simple.

Preferably, the lifting beam 1 comprises a first lifting boom 12 and a second lifting boom 13, the first lifting boom 12 and the second lifting boom 13 being slidably connected. Specifically, the first lifting arm 12 is provided with a sliding chute, and the second lifting arm 13 is slidably mounted in the sliding chute; the side wall of the sliding groove is provided with a first locking hole 121, the side wall of the second lifting arm 13 is provided with a plurality of second locking holes 131 at intervals, and the bolt penetrates through the first locking hole 121 and is selectively fixed in the second locking holes 131 so as to adjust the relative distance between the first lifting arm 12 and the second lifting arm 13, thereby realizing the length adjustment of the lifting beam 1 and improving the versatility of the lifting device.

Further preferably, the first locking holes 121 are waist-shaped holes, the distance between every two second locking holes 131 matches the length of the waist-shaped holes, two bolts penetrate through two ends of the waist-shaped holes and are selectively fixed in the two adjacent second locking holes 131, and when the two bolts are locked simultaneously, the first lifting arm 12 and the second lifting arm 13 cannot move relatively under the interference of the side walls of the waist-shaped holes.

Because the hoisting equipment needs to have a rotating function during hoisting, the object to be hoisted can conveniently move in the machine cabin. Preferably, as shown in fig. 1 and fig. 2, the lifting device further includes a rotating assembly 6, the rotating assembly 6 is rotatably disposed at the bottom of the lifting beam 1 near the first end 14, and the lifting beam 1 can rotate 360 ° through the rotating assembly 6, so as to improve the mobility of the lifting device and increase the practicability.

Alternatively, the rotating assembly 6 includes a base 61, a rotating shaft 62 and a fixing shaft 63, the fixing shaft 63 is installed on the base 61, the lifting beam 1 is fixed above the rotating shaft 62, and the fixing shaft 63 is provided with an installation hole; the rotating shaft 62 is rotatably mounted in the mounting hole through a bearing, and when the rotating shaft 62 rotates relative to the fixed shaft 63, the object to be hoisted moves along the horizontal direction. The end of the rotating shaft 62 exposed out of the mounting hole is provided with a first flange 621, the fixing shaft 63 is provided with a second flange 631 matching with the first flange 621, and the locking member is disposed through the first flange 621 and the second flange 631 to lock the rotation angle of the rotating shaft 62 relative to the fixing shaft 63.

Specifically, a central hole is formed in the base 61, the fixing shaft 63 penetrates through the central hole, two first locking nuts 64 are mounted on the fixing shaft 63 at intervals, the two first locking nuts 64 are respectively disposed on two sides of the central hole, and the fixing shaft 63 is fixed on the base 61 through the two first locking nuts 64 so as to fix the fixing shaft 63 and limit axial movement of the fixing shaft 63. The rotation axis 62 is provided with the one end of first flange 621 and welds in the bottom of lifting beam 1, and the relative lateral wall of first flange 621 and second flange 631 all is provided with annular groove, and two annular grooves form and hold the chamber, hold the intracavity and be provided with thrust bearing 66, and thrust bearing 66 has realized swivelling joint between first flange 621 and the second flange 631. The rotating shaft 62 penetrates through the mounting hole of the fixing shaft 63, the bushing 67 is sleeved on the rotating shaft 62, the bushing 67 is located between the rotating shaft 62 and the side wall of the mounting hole, the second locking nut 65 is installed at one end, far away from the first flange 621, of the rotating shaft 62, so that the bushing 67 is fixed, the second locking nut 65 can also prevent the rotating shaft 62 from moving relative to the fixing shaft 63 along the axial direction, and the rotating shaft 62 can be rotatably installed in the mounting hole of the fixing shaft 63.

Preferably, the hoisting device further comprises a support assembly 7, the support assembly 7 comprises a rotating ring 71 and a first support column 72 and a second support column 73 which are connected through the rotating ring 71, the first support column 72 and the second support column 73 are arranged at two opposite sides of the rotating ring 71, and the rotating ring 71 is rotatably mounted on the fixed shaft 63; the first support column 72 is connected to the hoisting mechanism 3 on the side away from the rotating ring 71, and the second support column 73 is connected to the hoisting beam 1 on the end away from the rotating ring 71. A deep groove ball bearing 74 is provided between the rotating ring 71 and the fixed shaft 63 to achieve the rotational connection between the rotating shaft 62 and the fixed shaft 63. In this embodiment, one end of the first support column 72 is connected to the rotating ring 71 through a bolt, and the other end is supported at the bottom of the bracket 34 of the hoisting mechanism 3 through a bolt, so that the installation strength of the hoisting mechanism 3 is increased, and one end of the second support column 73 is connected to the rotating ring 71 through a bolt, and the other end is connected to the hoisting beam 1 through a bolt, so as to further provide support for the hoisting beam 1 and prevent the hoisting beam 1 from inclining.

It should be noted that this embodiment also provides the working steps of the hoisting apparatus:

step one; the hoisting drum 31 drives the hoisting rope 5 to move towards the direction far away from the hoisting drum 31, so that the hoisting rope 5 binds the object to be hoisted;

step two: the hoisting drum 31 drives the hoisting rope 5 to move towards the direction close to the hoisting drum 31, so that the object to be hoisted rises, and the object to be hoisted is maintained or assembled;

step three: when the object to be hoisted needs to move in the horizontal direction, the hoisting beam 1 is manually driven to rotate, so that the rotating shaft 62 rotates relative to the fixed shaft 63, and the object to be hoisted moves in the horizontal direction;

step four: when the object to be hoisted moves to the preset position in the horizontal direction, the hoisting drum 31 drives the hoisting rope 5 to move towards the direction away from the hoisting drum 31, so that the object to be hoisted descends to the specified position.

The lifting installation device is simple in structure, convenient to assemble, capable of being assembled in a narrow engine room, large in bearing capacity and high in flexibility, achieves lifting installation of parts of the fan gear box and large equipment in the engine room, and meets use requirements.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A lifting device, comprising:

the lifting device comprises a lifting beam (1), wherein a support rod (2) is arranged on the lifting beam (1), and a first roller (21) and a second roller (22) are arranged on the support rod (2) at intervals;

a hoisting mechanism (3) arranged at a first end (14) of the lifting beam (1);

the fixed rope (4) is connected to the first roller (21), one end of the fixed rope (4) is fixed to the first end (14) of the lifting beam (1), and the other end of the fixed rope (4) is fixed to the top surface close to the second end (15) of the lifting beam (1);

the hoisting mechanism comprises a hoisting rope (5), a third idler wheel (11) is arranged at the second end (15) of the hoisting beam (1), the hoisting rope (5) is connected to the second idler wheel (22) and the third idler wheel (11), one end of the hoisting rope (5) is connected to the hoisting mechanism (3), the other end of the hoisting rope is used for being connected with an object to be hoisted, and the hoisting mechanism (3) can drive the hoisting rope (5) to hoist the object to be hoisted;

when the hoisting mechanism (3) drives the hoisting rope (5) to move towards the direction close to the hoisting mechanism (3), the hoisting rope (5) enables the object to be hoisted to ascend;

when the hoisting mechanism (3) drives the hoisting rope (5) to move towards the direction far away from the hoisting mechanism (3), the hoisting rope (5) enables the object to be hoisted to fall.

2. Hoisting device according to claim 1, further comprising a swivel assembly (6), said swivel assembly (6) being rotatably arranged at the bottom of said lifting beam (1) near said first end (14).

3. Hoisting device according to claim 2, characterized in that the rotating assembly (6) comprises a base (61), a rotating shaft (62) and a fixed shaft (63), the fixed shaft (63) is mounted on the base (61), the hoisting beam (1) is fixed above the rotating shaft (62), and the fixed shaft (63) is provided with a mounting hole; the rotating shaft (62) is rotatably mounted in the mounting hole through a bearing, and when the rotating shaft (62) rotates relative to the fixed shaft (63), the object to be hoisted moves along the horizontal direction.

4. The hoisting device as recited in claim 3, wherein the end of the rotating shaft (62) exposed out of the mounting hole is provided with a first flange (621), the fixed shaft (63) is provided with a second flange (631) engaged with the first flange (621), and a locking member is disposed through the first flange (621) and the second flange (631) to lock the rotation angle of the rotating shaft (62) relative to the fixed shaft (63).

5. Hoisting device according to claim 3, further comprising a support assembly (7), wherein the support assembly (7) comprises a rotating ring (71) and a first support column (72) and a second support column (73) connected by the rotating ring (71), the first support column (72) and the second support column (73) being arranged on opposite sides of the rotating ring (71), the rotating ring (71) being rotatably mounted to the stationary shaft (63);

one side, far away from the rotating ring (71), of the first supporting column (72) is connected to the hoisting mechanism (3), and one end, far away from the rotating ring (71), of the second supporting column (73) is connected to the hoisting beam (1).

6. Hoisting device according to claim 1, characterized in that the lifting beam (1) comprises a first lifting boom (12) and a second lifting boom (13), the first lifting boom (12) and the second lifting boom (13) being slidably connected.

7. Hoisting device as claimed in claim 6, characterized in that the first lifting arm (12) is provided with a slide groove, in which the second lifting arm (13) is slidably mounted;

the side wall of the sliding groove is provided with a first locking hole (121), the side wall of the second lifting arm (13) is provided with a plurality of second locking holes (131) at intervals, and a bolt penetrates through the first locking hole (121) and is selectively fixed to the second locking holes (131) so as to adjust the relative distance between the first lifting arm (12) and the second lifting arm (13).

8. The hoisting device as recited in claim 7, characterized in that the first locking holes (121) are slotted holes, the distance between two second locking holes (131) is matched with the length of the slotted holes, and two bolts are inserted into two ends of the slotted holes and selectively fixed to two adjacent second locking holes (131).

9. Hoisting device according to claim 1, characterized in that the hoisting mechanism (3) comprises a hoisting drum (31), a drive member (32) and a gear shaft (33), the gear shaft (33) being in engagement connection with the hoisting drum (31), the drive member (32) being in driving connection with the gear shaft (33).

10. The hoisting device as recited in claim 1, wherein triangular support blocks (8) are installed on both sides of the support bar (2), the triangular support blocks (8) are fixed on the lifting beam (1), and the triangular support blocks (8) are connected through bolts.