CN210103313U

CN210103313U - Unilateral hanging equipment applied to worm gear reducer

Info

Publication number: CN210103313U
Application number: CN201921004450.2U
Authority: CN
Inventors: 管水康; 斯朕
Original assignee: HANGZHOU JIAHUANG TRANSMISSION TECHNOLOGY Co Ltd
Current assignee: HANGZHOU JIAHUANG TRANSMISSION TECHNOLOGY Co Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-02-21
Anticipated expiration: 2029-06-29

Abstract

This unilateral equipment of hanging that is used for worm gear reduction gear is including being vertical fixed support bar, it is connected with the cantilever jib to rotate in the upper end of fixed support bar, the one end that is close to fixed support bar at the cantilever jib is equipped with hoisting device, hoisting device's rope is around establishing on the free end gyro wheel of cantilever jib and freely perpendicular downwards, be connected with the lifting hook to the lower extreme perpendicularly at the rope, be connected with vertical riser at cantilever jib free end downside, and connect the guide cylinder at vertical riser lower extreme lateral part, the guide cylinder is vertical setting, inside the sliding barrel who is equipped with the vertical direction sliding connection of guide cylinder at the guide cylinder lower extreme, the lower extreme at the sliding barrel is equipped with two inside intercommunications that run through radial through-hole of sliding barrel and through-hole and sliding barrel, be equipped with wear-resistant section of thick bamboo in.

Description

Unilateral hanging equipment applied to worm gear reducer

Technical Field

The utility model belongs to the technical field of the reduction gear, especially, relate to a be applied to unilateral equipment of hanging of worm gear reduction gear.

Background

The structure of the worm gear speed reducer comprises a box body, an output shaft, a worm wheel connected to the output shaft and a worm meshed with the worm wheel are arranged in the box body, one end of the output shaft is fixed in the box body through a bearing, and the other end of the output shaft penetrates through a worm wheel end cover.

The box body is heavy in weight and inconvenient to carry, and particularly, the box body needs to be carried upwards or downwards, so that great physical strength is required. In order to solve the problems, the inventor designs a unilateral lifting device for lifting the box body, which can lift the box body hooked on a lifting hook under the driving of a winch to realize upward transportation or downward transportation.

Although the device can lift the box body, the labor intensity can be reduced, and the production safety is improved, the device has the following defects:

it lifts by crane the box and when hoisting accessory self rotated, its the box this moment can take place to rock, and rock and then can influence the normal clear of production, and the design is unreasonable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a design more reasonable be applied to worm gear reduction gear's unilateral equipment of hanging is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the unilateral hanging device applied to the worm gear reducer comprises a vertically fixed supporting rod, a cantilever suspender is rotatably connected at the upper end of the fixed supporting rod, a winding device is arranged at one end of the cantilever suspender, which is close to the fixed supporting rod, a rope of the winding device is wound on a roller at the free end of the cantilever suspender and freely and vertically faces downwards, a lifting hook is connected at the lower end of the rope in the vertical direction, a driving device for driving the cantilever suspender to rotate relative to the fixed supporting rod is arranged at the top of the fixed supporting rod, a vertical upright plate and a guide cylinder connected to the side part of the lower end of the vertical upright plate are connected at the lower end of the cantilever suspender, the guide cylinder is vertically arranged, at least two V-shaped guide wheels which are oppositely arranged are arranged in the guide cylinder, a sliding cylinder which is vertically and slidably connected with the guide cylinder is arranged in the lower end of the guide cylinder, two through holes which penetrate through the radial direction of, a wear-resistant cylinder is arranged in the sliding cylinder, arc grooves which are communicated with the through holes one by one and two locking rods which penetrate through the through holes one by one and are clamped in the arc grooves are arranged on the outer wall of the wear-resistant cylinder, and an axial positioning structure for preventing the locking rods from axially moving along the through holes is arranged between each locking rod and the through hole;

be equipped with toper guide part at the guide cylinder lower extreme, be connected with interior conical body on the lifting hook upper end, the interior conical surface of toper guide part matches with the outer conical surface of interior conical body, thereby hoisting device drive rope convolutes thereby forces the sliding drum of connection on the rope to upwards enter into to the guide cylinder and interior conical body inserts in the toper guide part in step, rotates when drive arrangement drive cantilever jib relatively fixed bracing piece guide cylinder, sliding drum, toper guide part and interior conical body can prevent to be connected with the rope of lifting hook and rock.

In the unilateral hanging device applied to the worm and gear speed reducer, the lower end of the sliding cylinder is internally provided with the tightening sleeve sleeved on the wear-resistant cylinder, the lateral part of the tightening sleeve is provided with two lateral part holes which are respectively communicated with the through hole and the arc groove, the locking rods penetrate through the lateral part holes one by one, the middle part of the inner wall of the sliding cylinder is provided with a first limiting surface, and the upper end of the tightening sleeve is provided with a second limiting surface matched with the first limiting surface.

In the unilateral hanging device applied to the worm gear reducer, the first limiting surface is an arc-shaped concave surface, the second limiting surface is an arc-shaped convex surface, and the arc-shaped concave surface is matched with the arc-shaped convex surface.

In foretell unilateral equipment of hanging of being applied to worm gear reduction gear, axial positioning structure including set up the restriction hole in through-hole both ends drill way to and wear to establish in the restriction hole and the screw that the screw thread section stretches into to the corresponding tip of locking pole in, screw and locking pole threaded connection.

In the unilateral hanging device applied to the worm gear reducer, the two ends of the sliding cylinder are respectively provided with the arc convex surfaces.

In the unilateral hanging device applied to the worm and gear reducer, the driving device comprises an annular positioning surface arranged at the upper end of the fixed supporting rod, a lower bearing assembly sleeved at the upper end of the fixed supporting rod, an upper bearing assembly positioned above the lower bearing assembly, and a middle connecting cylinder positioned between the lower bearing assembly and the upper bearing assembly, wherein a circular cylinder is arranged on the upper bearing assembly, a gear ring fixedly connected with the circular cylinder in the circumferential direction is arranged on the inner wall of the circular cylinder, a gear meshed with the gear ring is arranged at the upper end of the fixed supporting rod, the gear is connected with the servo motor, and the winding device is fixed on the lower bearing assembly and the upper bearing assembly.

In the unilateral hanging device applied to the worm gear reducer, the lower bearing assembly comprises a lower plane bearing, the lower end surface of the lower plane bearing is in contact with the annular positioning surface, and a lower protective sleeve is sleeved on the lower plane bearing from top to bottom; the lower end of the middle connecting cylinder is fixed on the end face of the upper end face of the lower protective sleeve, the upper bearing assembly comprises an upper protective sleeve fixed at the upper end of the middle connecting cylinder, an upper plane bearing is arranged in the upper protective sleeve, and a plurality of connecting screw rods located on the outer side of the middle connecting cylinder are connected between the lower protective sleeve and the upper protective sleeve.

In the unilateral hanging device applied to the worm and gear speed reducer, the circular flanges are respectively arranged at the upper end and the lower end of the middle connecting cylinder, and the circular flanges are provided with bolts which are connected with the upper end of the lower protective sleeve and the lower end of the upper protective sleeve in a penetrating manner.

In the unilateral hanging device applied to the worm gear speed reducer, the cantilever suspender is fixed on the lower bearing assembly and/or the upper bearing assembly, and a triangular reinforcing rib is arranged between the cantilever suspender and the upper bearing assembly.

In the unilateral hanging device applied to the worm and gear speed reducer, the hoisting device comprises the speed reducer fixed on the driving device, a rope winding wheel connected to an output shaft of the speed reducer and a driving motor connected to an input shaft of the speed reducer.

Compared with the prior art, this unilateral equipment of hanging that is used for worm gear reduction gear's advantage lies in:

the driving device drives the cantilever suspender to rotate relative to the fixed supporting rod, and the guide cylinder, the sliding cylinder, the conical guide part and the inner conical body can prevent the rope connected with the lifting hook from shaking.

The design is more reasonable.

Drawings

Fig. 1 is a schematic structural diagram provided by the present invention.

Fig. 2 is a schematic structural view of the utility model with an anti-shaking function.

Fig. 3 is a schematic structural diagram of the hoisting device provided by the present invention.

Fig. 4 is an enlarged schematic view of a portion a in fig. 2.

Fig. 5 is a schematic view of a cross-sectional structure of a sliding cylinder according to the present invention.

Fig. 6 is a schematic structural view taken along line B-B in fig. 5.

Fig. 7 is a schematic view of a partial structure provided by the present invention.

In the figure, a fixed support rod 1, a base 10, a cantilever boom 2, a winding device 3, a rope 3a, a roller 3b, a speed reducer 31, a rope winding wheel 32, a driving motor 33, a hook 4, an inner conical body 41, a driving device 5, a triangular reinforcing rib 50, an annular positioning surface 51, a lower bearing assembly 52, a lower plane bearing 52a, a lower protective sleeve 52b, an upper bearing assembly 53, an upper protective sleeve 53a, an upper plane bearing 53b, a circular cylinder 54, an intermediate connecting cylinder 55, a gear 56, a gear 57, a servo motor 58, a connecting screw 59, a vertical upright plate 6, a guide cylinder 61, a conical guide part 61a, a V-shaped guide wheel 62, a sliding cylinder 63, a through hole 63a, a first limiting surface 63b, a limiting hole 63c, a screw 63d, a wear-resistant cylinder 64, a circular arc groove 64a, a locking rod 65, a tightening sleeve 66, a side hole 66a and a second limiting surface.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the unilateral hanging device applied to the worm gear reducer comprises a fixed support rod 1 which is vertically fixed, and the lower end of the fixed support rod 1 is connected with a base 10. The base 10 is fixedly connected with the ground through a plurality of ground bolts.

A plurality of reinforcing ribs are connected between the base 10 and the lower end of the fixed supporting rod 1.

As shown in the figures 1-3 of the drawings,

the upper end of the fixed support rod 1 is rotatably connected with a cantilever suspender 2, one end of the cantilever suspender 2 close to the fixed support rod 1 is provided with a hoisting device 3, specifically, the hoisting device 3 comprises a speed reducer 31 fixed on a driving device 5, a rope winding wheel 32 connected on an output shaft of the speed reducer, and a driving motor 33 connected on an input shaft of the speed reducer. The drive motor 33 is a servo motor.

The speed reducer 31 can ensure stability of power output.

A rope 3a of the hoisting device 3 is wound on a free end roller 3b of the cantilever suspender 2 and freely and vertically faces downwards, and a lifting hook 4 is connected to the vertically downward end of the rope 3 a.

When winding, the rope reel 32 is rotated by the driving motor 33 so that the rope 3a is wound around the rope reel 32, and the housing hooked on the hook 4 is lifted simultaneously.

As shown in figure 2 of the drawings, in which,

the top of the fixed support rod 1 is provided with a driving device 5 for driving the cantilever hanger rod 2 to rotate relative to the fixed support rod 1, specifically, the driving device 5 comprises an annular positioning surface 51 arranged at the upper end of the fixed support rod 1, a lower bearing assembly 52 sleeved at the upper end of the fixed support rod 1, an upper bearing assembly 53 positioned above the lower bearing assembly 52, an intermediate connecting cylinder 55 positioned between the lower bearing assembly 52 and the upper bearing assembly 53, the upper bearing assembly 53 is provided with a circular cylinder 54, the inner wall of the circular cylinder 54 is provided with a gear ring 56 which is circumferentially and fixedly connected with the circular cylinder 54, the gear ring 56 is an inner gear ring, the circular cylinder 54 is provided with a plurality of gear ring bolts in a penetrating way, and the threaded ends of the gear ring bolts are in. The upper end of the circular cylinder 54 is closed, and a plurality of vent holes are formed in the circumferential direction of the circular cylinder 54, so that the heat inside the circular cylinder can be conveniently dissipated.

The upper end of the fixed support rod 1 is provided with a gear 57 engaged with the gear ring 56, the gear 57 is connected with a servo motor 58, and the winding device 3 is fixed on the lower bearing assembly 52 and the upper bearing assembly 53. The winding device 3 can be rotated synchronously with the rotation on the lower bearing assembly 52 and the upper bearing assembly 53.

Specifically, the lower bearing assembly 52 includes a lower flat bearing 52a, a lower end surface of which contacts the annular positioning surface 51, and a lower protective sleeve 52b which is sleeved on the lower flat bearing 52a from top to bottom; the lower end of the intermediate connecting cylinder 55 is fixed on the end face of the upper end face of the lower protective sleeve 52b, and the upper bearing assembly 53 comprises an upper protective sleeve 53a fixed on the upper end of the intermediate connecting cylinder 55, an upper plane bearing 53b is arranged in the upper protective sleeve 53a, and a plurality of connecting screw rods 59 positioned outside the intermediate connecting cylinder 55 are connected between the lower protective sleeve 52b and the upper protective sleeve 53 a.

The connecting screw 59 is a double-headed screw, and the screw threads at both ends are opposite in direction of rotation, and the structural strength between the upper and lower bearing assemblies can be improved by the intermediate connecting cylinder 55 and the connecting screw 59.

The lower protective case 52b and the upper protective case 53a are made of a metal material, for example, cast steel die casting or the like.

Circular flanges are respectively arranged at the upper end and the lower end of the intermediate connecting cylinder 55, and bolts connected with the upper end of the lower protective sleeve 52b and the lower end of the upper protective sleeve 53a penetrate through the circular flanges.

The upper end of the lower protective sleeve 52b is provided with a lower annular groove, the circular flange is arranged in the lower annular groove, the lower end of the upper protective sleeve 53a is provided with an upper annular groove, and the circular flange is arranged in the upper annular groove, so that the phenomenon of inaccurate position alignment of the circular flange, the lower protective sleeve 52b and the upper protective sleeve 53a can be avoided.

The boom 2 is fixed to the lower bearing assembly 52 and/or the upper bearing assembly 53, and the triangular stiffener 50 is provided between the boom 2 and the upper bearing assembly 53. The triangular reinforcing ribs 50 can reinforce the structure.

Specifically, the cantilever boom 2 is fixed to the lower sock, and the triangular stiffener 50 is connected to the upper sock.

As shown in figures 2 and 4 of the drawings,

be connected with vertical riser 6 at 2 free end undersides of cantilever jib, vertical riser 6 is fixed with cantilever jib 2 through the bolt that a plurality of arrays distribute to and connect the guide cylinder 61 at 6 lower extreme lateral parts of vertical riser, guide cylinder 61 includes the barrel and connects the lower barrel of last barrel lower extreme, goes up the axial lead of barrel and the coincidence of the axial lead of barrel down, goes up the barrel and passes through welded connection with lower barrel, secondly, goes up the barrel and is connected through welding and a vertical riser lower extreme side.

The guide cylinder 61 is vertically arranged, at least two V-shaped guide wheels 62 which are oppositely arranged are arranged in the guide cylinder 61, four V-shaped guide wheels 62 which are opposite in pairs are arranged in the guide cylinder 61, and the rope passes between the two V-shaped guide wheels 62.

A sliding cylinder 63 vertically guided and slidably connected with the guide cylinder 61 is arranged in the lower end of the guide cylinder 61, the guide cylinder 61 is in clearance fit with the sliding cylinder 63, and arc convex surfaces 63e are respectively arranged at two ends of the sliding cylinder 63.

As shown in the figures 4-7 of the drawings,

the lower end of the sliding cylinder 63 is provided with two through holes 63a penetrating through the sliding cylinder 63 in the radial direction, the through holes 63a are communicated with the inside of the sliding cylinder 63, a wear-resistant cylinder 64 is arranged inside the sliding cylinder 63, the outer wall of the wear-resistant cylinder 64 is provided with arc grooves 64a communicated with the through holes 63a one by one, and two locking rods 65 penetrating through the through holes 63a one by one and clamped in the arc grooves 64a, and an axial positioning structure for preventing the locking rods 65 from axially moving along the through holes 63a is arranged between each locking rod 65 and the through holes 63 a;

further, the axial positioning structure comprises limiting holes 63c arranged at the two end openings of the through hole 63a, and screws 63d which are arranged in the limiting holes 63c in a penetrating manner and extend into the corresponding ends of the locking rods 65 in a threaded manner, wherein the screws 63d are in threaded connection with the locking rods 65.

The wear sleeve 64 may have an extended useful life, such as by quenching the inner wall of the wear sleeve 64.

Secondly, the locking rod 65 and the axial positioning structure are designed, so that the wear-resistant cylinder 64 can be conveniently replaced, the wear-resistant cylinder 64 can be fixedly installed, and safety accidents caused by looseness are avoided.

The rope 3a can be limited by matching the guide cylinder 61 and the sliding cylinder 63, and the shaking phenomenon can be placed to a certain degree.

In addition, a conical guide part 61a is arranged at the lower end of the guide cylinder 61, the inner conical body 41 is connected to the upper end of the hook 4, the inner conical surface of the conical guide part 61a is matched with the outer conical surface of the inner conical body 41, the winding device 3 drives the rope 3a to wind so as to force the sliding cylinder 63 connected to the rope 3a to enter the guide cylinder 61 upwards, and the inner conical body 41 is synchronously inserted into the conical guide part 61a, so that when the driving device 5 drives the cantilever boom 2 to rotate the guide cylinder 61, the sliding cylinder 63, the conical guide part 61a and the inner conical body 41 relative to the fixed support rod 1, the rope 3a connected with the hook 4 can be prevented from shaking.

The tightening sleeve 66 sleeved on the wear-resistant cylinder 64 is arranged in the lower end of the sliding cylinder 63, the tightening sleeve 66 can strengthen the internal structure, the phenomenon that the lower end of the guide cylinder 61 is cracked and cannot be normally used can be avoided, two lateral holes 66a are formed in the lateral portion of the tightening sleeve 66, the lateral holes 66a are respectively communicated with the through holes 63a and the arc grooves 64a, the locking rods 65 penetrate through the lateral holes 66a one by one, a first limiting surface 63b is arranged in the middle of the inner wall of the sliding cylinder 63, and a second limiting surface 66b matched with the first limiting surface 63b is arranged at the upper end of the tightening sleeve 66.

The first and second limiting surfaces ensure proper installation and avoid gouging the tightening sleeve 66 when installed in the wear-resistant cartridge 64.

According to the optimization scheme, the first limiting surface 63b is an arc-shaped concave surface, the second limiting surface 66b is an arc-shaped convex surface, and the arc-shaped concave surface is matched with the arc-shaped convex surface.

The method of use of this example is as follows:

1. the lifting hook 4 is pulled and hooked on the box body, and can be pulled manually;

2. the winding device 3 is opened and drives the rope 3a to wind;

3. with the continuous winding, the sliding cylinder 63 enters the guide cylinder 61, and simultaneously, the inner conical body 41 on the hook 4 enters the conical guide part 61a, until the outer conical surface of the inner conical body 41 is matched with the inner conical surface of the conical guide part 61a, the winding device 3 stops working;

4. the driving device 5 is opened to drive the cantilever suspender 2 to rotate relative to the fixed supporting rod 1, when the box body is translated to the position above the to-be-processed station, the winch device 3 at the moment unreels, and finally the box body is placed on the to-be-processed station.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Be applied to unilateral equipment of hanging of worm gear reduction gear, including being vertical fixed support bar (1), the upper end of fixed support bar (1) is rotated and is connected with cantilever jib (2), be equipped with hoisting device (3) in the one end that cantilever jib (2) are close to fixed support bar (1), rope (3a) of hoisting device (3) are around establishing on the free end gyro wheel (3b) of cantilever jib (2) and freely perpendicular downwards, be connected with lifting hook (4) to the lower extreme perpendicularly in rope (3a), its characterized in that, be equipped with at fixed support bar (1) top and be used for driving cantilever jib (2) relative fixed support bar (1) pivoted drive arrangement (5), be connected with vertical riser (6) at cantilever jib (2) free end downside to and connect in guide cylinder (61) of vertical riser (6) lower extreme lateral part, the guide cylinder (61) is vertically arranged, at least two V-shaped guide wheels (62) which are oppositely arranged are arranged in the guide cylinder (61), a sliding cylinder (63) which is vertically guided and slidably connected with the guide cylinder (61) is arranged in the lower end of the guide cylinder (61), two through holes (63a) penetrating through the radial direction of the sliding cylinder (63) are arranged at the lower end of the sliding cylinder (63), the through holes (63a) are communicated with the inside of the sliding cylinder (63), a wear-resistant cylinder (64) is arranged in the sliding cylinder (63), arc grooves (64a) which are communicated with the through holes (63a) one by one are arranged on the outer wall of the wear-resistant cylinder (64), and two locking rods (65) which penetrate through the through holes (63a) one by one and are clamped in the arc grooves (64a), an axial positioning structure for preventing the locking rod (65) from axially moving along the through hole (63a) is arranged between each locking rod (65) and the through hole (63 a);

the lower end of the guide cylinder (61) is provided with a conical guide part (61a), the upper end of the lifting hook (4) is connected with an inner conical body (41), the inner conical surface of the conical guide part (61a) is matched with the outer conical surface of the inner conical body (41), the winding device (3) drives the rope (3a) to wind so as to force the sliding cylinder (63) connected to the rope (3a) to upwards enter the guide cylinder (61), the inner conical body (41) is synchronously inserted into the conical guide part (61a), and when the driving device (5) drives the cantilever suspender (2) to rotate relative to the fixed support rod (1), the guide cylinder (61), the sliding cylinder (63), the conical guide part (61a) and the inner conical body (41) can prevent the rope (3a) connected with the lifting hook (4) from shaking.

2. The unilateral hanging device applied to the worm and gear reducer according to claim 1 is characterized in that a tightening sleeve (66) sleeved on a wear-resistant cylinder (64) is arranged inside the lower end of a sliding cylinder (63), two lateral holes (66a) are formed in the lateral portion of the tightening sleeve (66), the lateral holes (66a) are respectively communicated with a through hole (63a) and an arc groove (64a), locking rods (65) penetrate through the lateral holes (66a) one by one, a first limiting surface (63b) is arranged in the middle of the inner wall of the sliding cylinder (63), and a second limiting surface (66b) matched with the first limiting surface (63b) is arranged at the upper end of the tightening sleeve (66).

3. The single-side hanging device applied to the worm and gear speed reducer according to claim 2 is characterized in that the first limiting surface (63b) is an arc-shaped concave surface, the second limiting surface (66b) is an arc-shaped convex surface, and the arc-shaped concave surface is matched with the arc-shaped convex surface.

4. The single-side hanging device applied to the worm and gear speed reducer is characterized in that the axial positioning structure comprises limiting holes (63c) arranged in holes at two ends of the through hole (63a), and screws (63d) which are arranged in the limiting holes (63c) in a penetrating mode and extend into corresponding ends of the locking rods (65) in a threaded mode, and the screws (63d) are in threaded connection with the locking rods (65).

5. The single-side hanging device applied to the worm and gear speed reducer is characterized in that the two ends of the sliding cylinder (63) are respectively provided with a circular arc convex surface (63 e).

6. The single-side hanging device applied to the worm and gear reducer as claimed in claim 1, the driving device (5) comprises an annular positioning surface (51) arranged at the upper end of the fixed supporting rod (1), a lower bearing assembly (52) sleeved at the upper end of the fixed support rod (1), an upper bearing assembly (53) positioned above the lower bearing assembly (52), and a middle connecting cylinder (55) positioned between the lower bearing assembly (52) and the upper bearing assembly (53), a circular cylinder (54) is arranged on the upper bearing assembly (53), a gear ring (56) which is fixedly connected with the circular cylinder (54) in the circumferential direction is arranged on the inner wall of the circular cylinder (54), a gear (57) which is meshed with the gear ring (56) is arranged at the upper end of the fixed support rod (1), the gear (57) is connected with the servo motor (58), and the winding device (3) is fixed on the lower bearing assembly (52) and the upper bearing assembly (53).

7. The single-side hanging device applied to the worm and gear reducer is characterized in that the lower bearing assembly (52) comprises a lower plane bearing (52a), the lower end face of the lower plane bearing is in contact with the annular positioning surface (51), and a lower protective sleeve (52b) is sleeved on the lower plane bearing (52a) from top to bottom; the lower end of the intermediate connecting cylinder (55) is fixed on the end face of the upper end face of the lower protective sleeve (52b), the upper bearing assembly (53) comprises an upper protective sleeve (53a) fixed at the upper end of the intermediate connecting cylinder (55), an upper plane bearing (53b) is arranged in the upper protective sleeve (53a), and a plurality of connecting screw rods (59) located on the outer side of the intermediate connecting cylinder (55) are connected between the lower protective sleeve (52b) and the upper protective sleeve (53 a).

8. The single-side hanging device applied to the worm and gear speed reducer is characterized in that circular flanges are respectively arranged at the upper end and the lower end of the intermediate connecting cylinder (55), and bolts connected with the upper end of the lower protective sleeve (52b) and the lower end of the upper protective sleeve (53a) penetrate through the circular flanges.

9. The single-sided crane device applied to the worm gear reducer according to claim 6, wherein the cantilever boom (2) is fixed on a lower bearing assembly (52) and/or an upper bearing assembly (53), and a triangular reinforcing rib (50) is arranged between the cantilever boom (2) and the upper bearing assembly (53).