CN220331968U

CN220331968U - Sprocket chain disk structure and transverse pulling equipment

Info

Publication number: CN220331968U
Application number: CN202321930216.9U
Authority: CN
Inventors: 严志浩; 肖暗密; 汪洋
Original assignee: Sichuan Jiatuo Intelligent Equipment Co ltd
Current assignee: Sichuan Jiatuo Intelligent Equipment Co ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2024-01-12
Anticipated expiration: 2033-07-21

Abstract

The utility model discloses a chain wheel and chain disc structure and transverse pulling equipment, the chain wheel and chain disc structure comprises a supporting plate, a chain wheel and chain disc mechanism used for installing an outlet track and a driving mechanism, the chain wheel and chain disc mechanism comprises a base, a chain wheel arranged above the base and a chain disc arranged above the chain wheel, the base is installed at the top end of the supporting plate, the driving mechanism is arranged below the supporting plate, the chain wheel and chain disc structure further comprises a fixed shaft seat, the fixed shaft seat is sleeved on the periphery of an output shaft of the driving mechanism, the supporting plate is provided with a through hole, the fixed shaft seat penetrates through the through hole, the base is annularly arranged on the periphery of the fixed shaft seat, the chain wheel is sleeved on the periphery of the fixed shaft seat, the chain disc is arranged at the top end of the fixed shaft seat, and the driving mechanism is used for driving the fixed shaft seat to rotate through the output shaft of the chain wheel and the chain disc to rotate. The utility model can prolong the service life of the driving mechanism.

Description

Sprocket chain disk structure and transverse pulling equipment

Technical Field

The utility model relates to the technical field of transverse pulling equipment, in particular to a chain wheel and chain disc structure and transverse pulling equipment.

Background

In the production of the lithium battery base film, in order to promote uniform size distribution of micropores in the film, improve the performance of the film, prepare thinner products and improve the production yield, the film is stretched longitudinally and transversely, wherein stretching equipment in the transverse direction of the film is called transverse stretching equipment (transverse stretching equipment for short), and when a closed loop chain clamp body formed by a plurality of chain clamps is tensioned, the transverse stretching equipment drives the chain clamps to rotate along a specific track on an outlet track through a chain wheel of a chain wheel chain disc structure.

Existing sprocket chain constructions generally include a sprocket chain mechanism and a drive mechanism for mounting the exit track. The sprocket-and-disc mechanism typically includes a sprocket and a disc positioned over the sprocket for mating with the chain clip. The sprocket and the chain disk are both sleeved on the periphery of the output shaft of the driving mechanism. In practical application, the driving mechanism drives the chain wheel and the chain plate to rotate through the output shaft of the driving mechanism, so that the chain clamp can be driven to rotate along a specific track on the outlet track. In this kind of structure, owing to the sprocket is direct to be established at actuating mechanism's output shaft's periphery in the cover, therefore when chain clamp tensioning rotated, the axial tensioning force that the sprocket received can directly transmit actuating mechanism's output shaft, and actuating mechanism's output shaft can receive the radial force that comes from the sprocket like this for a long time, and the condition that stress concentration, deformation often appear in the output shaft, serious even can appear the dead condition of card, has reduced actuating mechanism's life.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a chain wheel chain disc structure and transverse pulling equipment, which can prolong the service life of a driving mechanism.

The technical scheme adopted for solving the technical problems is as follows:

the first aspect of the utility model provides a sprocket chain disc structure, which comprises a supporting plate, a sprocket chain disc mechanism for installing an outlet track and a driving mechanism, wherein the sprocket chain disc mechanism comprises a base, a sprocket wheel positioned above the base and a chain disc positioned above the sprocket wheel, the base is installed at the top end of the supporting plate, the driving mechanism is positioned below the supporting plate, the sprocket chain disc structure further comprises a fixed shaft seat, the fixed shaft seat is sleeved on the periphery of an output shaft of the driving mechanism, the supporting plate is provided with a through hole, the fixed shaft seat penetrates through the through hole, the base is annularly arranged on the periphery of the fixed shaft seat, the sprocket wheel is sleeved on the periphery of the fixed shaft seat, the chain disc is arranged at the top end of the fixed shaft seat, and the driving mechanism is used for driving the fixed shaft seat to rotate through the output shaft of the driving mechanism, so that the sprocket wheel and the chain disc can be driven to rotate.

As the preferable technical scheme, still include first fixed plate and second fixed plate, the periphery cover of fixed axle bed is equipped with the bearing frame, be equipped with the bearing between bearing frame and the fixed axle bed, the bearing frame is located between sprocket and the sprocket, the first pot head of first fixed plate is established the periphery of bearing frame, the bottom of the second end of first fixed plate has the recess, the second fixed plate is located one side of sprocket, the first end setting of second fixed plate is in the top of base, the second end of second fixed plate with the recess cooperatees.

As the preferable technical scheme, the novel fixing device further comprises a supporting block, wherein the supporting block is arranged at the top end of the base, the supporting block is provided with a supporting plate threaded hole, an adjusting bolt is installed in the supporting plate threaded hole in a threaded mode, and the tail end of the adjusting bolt abuts against the second end portion of the first fixing plate.

As the preferable technical scheme, a boss is formed on the periphery of the fixed shaft seat, and the sprocket is arranged at the top end of the boss.

As the preferable technical scheme, still include the bottom plate, the both ends of backup pad are in through two risers setting respectively the top of bottom plate, actuating mechanism includes driving motor and speed reducer, the speed reducer with driving motor connects, the top demountable installation of bottom plate has the motor support column, driving motor arranges in the top of motor support column, the speed reducer is located between two risers, the top demountable installation of bottom plate has the speed reducer support, the speed reducer is arranged in the top of speed reducer support and install the bottom of backup pad, the fixed axle seat cover is established the periphery of the output shaft of speed reducer, driving motor is used for the drive the speed reducer rotates, the speed reducer passes through its output shaft drive fixed axle bed rotates, thereby can drive sprocket and chain dish rotate.

As the preferable technical scheme, the top thread of motor support column installs first elasticity cushion, driving motor arranges in on the first elasticity cushion, the top thread of speed reducer support installs the second elasticity cushion, the speed reducer is arranged in on the second elasticity cushion.

As the preferable technical scheme, the bottom of motor support column is equipped with first support column screw hole, the top of bottom plate be equipped with the second support column screw hole that first support column screw hole corresponds, install first fastener in first support column screw hole and the second support column screw hole, the motor support column have with the support column logical groove of first support column screw hole intercommunication, the head of first fastener is located the support column logical inslot.

As the preferable technical scheme, the bottom of speed reducer support is equipped with first support screw hole, the top of bottom plate be equipped with the second support screw hole that first support screw hole corresponds, install the second fastener in first support screw hole and the second support screw hole, the speed reducer support have with the support logical groove of first support screw hole intercommunication, the head of second fastener is located the support leads to the inslot.

As a preferable technical scheme, the speed reducer is detachably arranged at the bottom end of the supporting plate; the bottom of backup pad is equipped with first installation screw hole, the speed reducer be equipped with the second installation screw hole that first installation screw hole corresponds, install the speed reducer fastener in first installation screw hole and the second installation screw hole.

The second aspect of the utility model provides a transverse pulling device, which comprises the sprocket chain disc structure.

The beneficial effects of the utility model are as follows: according to the utility model, the fixed shaft seat is sleeved on the periphery of the output shaft of the driving mechanism, the chain wheel is sleeved on the periphery of the fixed shaft seat, and the chain wheel is arranged on the top end of the fixed shaft seat.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a sprocket assembly according to one embodiment of the present utility model;

FIG. 2 is a schematic view of the sprocket chain configuration of FIG. 1 at a first angle with a protective plate, a portion of the exit track removed;

FIG. 3 is a schematic view of the sprocket chain configuration of FIG. 1 at a second angle with the protective plate, portions of the exit track removed;

FIG. 4 is a schematic cross-sectional view of the sprocket chain configuration shown in FIG. 1.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Referring to fig. 1 to 4, an embodiment of the present utility model provides a sprocket chain structure, which includes a bottom plate 10, a supporting plate 20, a driving mechanism, a sprocket chain mechanism for installing an outlet rail 100, a fixing shaft seat 52, a first fixing plate 53, a second fixing plate 55 and a supporting block 56.

The base plate 10 is for mounting to, for example, the ground, a machine table, or the like. The support plate 20 is located above the base plate 10. The support plate 20 is provided at both ends thereof at the top end of the bottom plate 10 by two risers 22, respectively.

The drive mechanism includes a drive motor 32 and a speed reducer 33. The driving motor 32 is located at one side of the two risers 22, and a motor shaft of the driving motor 32 is connected with an input shaft of the speed reducer 33. The speed reducer 33 is detachably mounted at the bottom end of the support plate 20 and is located between the two risers 22. The front plates 23 are arranged on the sides of the two vertical plates 22 far away from the driving motor 32, and the front plates 23 play a role in protecting the speed reducer 33.

In this embodiment, the motor support column 34 is detachably mounted on the top end of the base plate 10, and the driving motor 32 is disposed on the top end of the motor support column 34, so that the driving motor 32 can be supported by the motor support column 34. The top end of the bottom plate 10 is detachably provided with a speed reducer support 35, and the speed reducer 33 is arranged at the top end of the speed reducer support 35, so that the speed reducer 33 can be supported through the speed reducer support 35.

A first elastic rubber pad 344 is mounted on the top end of the motor support column 34 in a threaded manner, and the driving motor 32 is disposed on the first elastic rubber pad 344. The top thread of the speed reducer support 35 is provided with a second elastic rubber pad 353, and the speed reducer 33 is arranged on the second elastic rubber pad 353. The first elastic rubber pad 344 and the second elastic rubber pad 353 can respectively play a role in damping the driving motor 32 and the speed reducer 33.

A first elastic rubber pad 344 is mounted on the top end of the motor support column 34 in a threaded manner, specifically: the first elastic rubber pad 344 comprises a circular first body and a first adjusting bolt, the tail end of the first adjusting bolt is connected with the bottom end of the first body, the driving motor 32 is arranged at the top end of the first body, a first threaded hole is formed in the top end of the motor support column 34, the first adjusting bolt is installed in the first threaded hole in a threaded mode, the motor support column 34 is provided with a support column avoiding hole 342 communicated with the first threaded hole, and the head of the first adjusting bolt is located in the support column avoiding hole 342. By adjusting the amount of the first adjustment bolt threaded into the first threaded hole 342, the tightness of contact between the first body and the drive motor 32 can be adjusted. The support post relief hole 342 is provided to facilitate installation of the first elastomeric pad 344.

The second elastic rubber pad 353 is installed on the top thread of the speed reducer support 35, specifically: the second elastic rubber pad 353 comprises a second body and a second adjusting bolt, the tail end of the second adjusting bolt is connected with the bottom end of the second body, the speed reducer 33 is arranged at the top end of the second body, a second threaded hole is formed in the top end of the speed reducer support 35, the second adjusting bolt is installed in the second threaded hole in a threaded mode, the speed reducer support 35 is provided with a support through groove 352 communicated with the second threaded hole, and the head of the second adjusting bolt is located in the support through groove 352. By adjusting the screwing amount of the second adjusting bolt in the second threaded hole, the contact tightness between the second body and the speed reducer 33 can be adjusted. The support through groove 352 is provided to facilitate the installation of the second elastic rubber pad 353.

The number of the first elastic rubber pads 344 and the second elastic rubber pads 353 can be set according to practical situations. The first body of the first elastic rubber pad 344 and the first body of the second elastic rubber pad 353 are made of nonmetal, preferably high-strength rubber.

The top end of the bottom plate 10 is detachably provided with a motor support column 34, specifically: the bottom end of the motor support column 34 is provided with a first support column screw hole, the top end of the base plate 10 is provided with a second support column screw hole corresponding to the first support column screw hole, and first fasteners 345 such as bolts and the like are installed in the first support column screw hole and the second support column screw hole. The motor support post 34 has a support post through slot 343 in communication with the first support post threaded bore, and the head of the first fastener 345 is located within the support post through slot 343. Removal of the motor support column 34 from the base plate 10 is accomplished by removing the first fastener 345 from the first support column threaded bore and the second support column threaded bore. By adjusting the amount of threading of the first fastener 345 into the second support post threaded bore, the height of the motor support post 34 can be adjusted to accommodate the weight of the drive motor 32. The number of the first support post screw holes, the second support post screw holes, and the first fasteners 345 may be set according to actual situations. The support post through slots 343 are provided to facilitate installation of the first fasteners 345.

The top end of the bottom plate 10 is detachably provided with a speed reducer support 35, specifically: the bottom end of the speed reducer support 35 is provided with a first support screw hole, the top end of the bottom plate 10 is provided with a second support screw hole corresponding to the first support screw hole, and second fasteners 354 such as bolts and the like are installed in the first support screw hole and the second support screw hole. The number of first and second bracket screw holes and second fasteners 354 may be set according to actual conditions. The first standoff threaded bore communicates with the standoff through-slot 352 and the head of the second fastener 354 is located within the standoff through-slot 352. The speed reducer 33 is detachably mounted at the bottom end of the supporting plate 20, specifically: the bottom end of the support plate 20 is provided with a first mounting screw hole, the speed reducer 33 is provided with a second mounting screw hole corresponding to the first mounting screw hole, and speed reducer fasteners 333 such as bolts and the like are installed in the first and second mounting screw holes. The number of the first mounting screw holes, the second mounting screw holes, and the speed reducer fasteners 333 may be set according to actual conditions. When the speed reducer 33 is actually required to be disassembled for maintenance or replacement, the second fastening piece 354 is firstly disassembled from the first support threaded hole and the second support threaded hole, so that the speed reducer support 35 and the second elastic rubber pad 353 can be disassembled from the bottom plate 10, the speed reducer 33 is supported by the jack while the speed reducer support 35 and the second elastic rubber pad 353 are disassembled from the bottom plate 10, then the speed reducer fastening piece 333 is disassembled from the first mounting threaded hole and the second mounting threaded hole, then the jack is lowered to drive the speed reducer 33 to move downwards, and after the preset position is reached, the speed reducer 33 is moved out from between the two vertical plates 22. The structure of the utility model is convenient for detaching the speed reducer 33 so as to carry out regular maintenance or replacement on the speed reducer 33, and compared with the prior art, the structure does not need to take out the speed reducer 33 after integrally hoisting and taking out the chain wheel chain disc mechanism and the outlet track 100, has simple operation, saves time and labor, and improves the production efficiency.

The sprocket-and-disc mechanism includes a sprocket 42, a disc 43 and a base 44. The base 44 is mounted to the top end of the support plate 20 by a flange 442. The sprocket 42 is located above the base 44, and the sprocket 42 is adapted for engagement by a chain clip. The chain plate 43 is located above the chain wheel 42, the chain plate 43 is used for connecting an outer rubber ring to maintain the open and closed state of the chain clamp, and is used as a protection plate or cover plate to protect the chain wheel 42, and in practical application, the outlet rail 100 is installed at the top end of the base 44 and is sleeved with the chain wheel 42 and the chain plate 43. A protective plate 45 for protecting the sprocket 42 and the sprocket 43 is provided above the sprocket 43, and the protective plate 45 is provided at the top end of the exit rail 100.

The fixed shaft seat 52 is sleeved on the outer periphery of the output shaft 332 of the speed reducer 33. The support plate 20 has a through hole 5, and the fixing shaft seat 52 is provided through the through hole 222. The base 44 is disposed around the outer periphery of the fixed shaft seat 52. The sprocket 42 is sleeved on the outer periphery of the fixed shaft seat 52. The chain plate 43 is provided at the top end of the fixed shaft seat 52 by a fastener such as a screw or the like. The driving motor 32 is used for driving the speed reducer 33 to rotate through a motor shaft and an input shaft, and the speed reducer 33 drives the fixed shaft seat 52 to rotate through the output shaft 332, so that the sprocket 42 and the chain disk 43 can be driven to rotate. In practical application, the chain wheel 42 can be driven to rotate along a specific track on the outlet track 100 by rotating the chain clamp matched with the chain wheel 42, when the chain clamp is tensioned, because the chain wheel 42 is sleeved on the periphery of the fixed shaft seat 52, the axial tensioning force borne by the chain wheel 42 can be directly transmitted to the fixed shaft seat 52, so that the axial tensioning force can be prevented from being directly transmitted to the output shaft 332 of the speed reducer 33, the radial force borne by the speed reducer 33 from the chain wheel 42 can be reduced, the conditions of stress concentration, deformation, even blocking and the like of the output shaft 332 of the speed reducer 33 can be avoided, the driving mechanism is protected, and the service life of the driving mechanism is prolonged.

In this embodiment, a circular boss 522 is formed on the outer periphery of the fixed shaft seat 52 by an integral molding, and the sprocket 42 is disposed at the top end of the boss 522. It will be appreciated that in other embodiments, the boss 522 and the fixed axle seat 52 may be formed separately.

A circumferential groove is provided at the top edge of the boss 522, and the sprocket 42 is provided at the bottom of the circumferential groove.

The outer periphery of the fixed shaft seat 52 is sleeved with a bearing seat 54, a bearing 541 is arranged between the bearing seat 54 and the fixed shaft seat 52, the bearing 541 is sleeved on the outer periphery of the fixed shaft seat 52, and the bearing 541 is preferably a deep groove ball bearing. The top end of the bearing housing 54 is provided with an end cap 542, and the bearing housing 54 is located between the chain wheel 43 and the chain wheel 42. The first end of the first fixed plate 53 is provided with a through hole, the first end of the first fixed plate 53 is sleeved on the periphery of the bearing seat 54 through the through hole, and through the arranged bearing seat 54 and the bearing 541, on one hand, the first fixed plate 53 and the fixed shaft seat 52 can be connected together, and on the other hand, the first fixed plate 53 can be prevented from rotating along with the fixed shaft seat 52. The bottom of the second end of the first fixing plate 53 has a groove, the second fixing plate 55 is located at one side of the sprocket 42, and in practical use, the second fixing plate 55 is located between the center of the outlet rail 100 and the sprocket 42, the first end of the second fixing plate 55 is disposed at the top end of the base 44 by a fastener such as a screw, and the second end of the second fixing plate 55 is engaged with the groove. In practical application, the axial tensioning force transmitted to the fixed shaft seat 52 is transmitted to the first fixed plate 53 through the bearing seat 54, then transmitted to the second fixed plate 55, and then transmitted to the outlet track 100 through the base 44, so that the axial tensioning force can be further prevented from being directly transmitted to the output shaft 332 of the speed reducer 33, the radial force from the sprocket 42 to the speed reducer 33 can be further reduced, and the conditions of stress concentration, deformation, even jamming and the like of the output shaft 332 of the speed reducer 33 can be further avoided.

The support block 56 has an L-shape, and a lateral portion of the support block 56 is provided at the top end of the base 44 by a fastener such as a screw. The top end of the vertical portion of the support block 56 has a support plate screw hole in which an adjustment bolt 57 is screw-mounted, and the tip of the adjustment bolt 57 abuts against the second end portion of the first fixing plate 53. The position of the first fixing plate 53 can be finely adjusted by adjusting the screwing amount of the adjusting bolt 57 in the threaded hole of the supporting plate, the situation that the fixed shaft seat 52 is worn due to too much stress deflection can be prevented by finely adjusting the position of the first fixing plate 53, and the fine adjustment of the shaft distance between the fixed shaft seat 52 and the output shaft 332 can be realized. The number of the support plate screw holes and the adjusting bolts 57 can be set according to practical situations.

In this embodiment, the outer peripheral surface of the output shaft 332 of the speed reducer 33 is provided with a flat key extending along the axial direction of the output shaft 332, and the inner peripheral surface of the fixed shaft seat 52 is provided with a key slot matched with the flat key. In the process of actually disassembling the speed reducer 33, in the process of descending the speed reducer 33 along with the jack, the flat key and the key groove can be separated through the gravity of the speed reducer 33, and therefore the speed reducer 33 can be taken out from between the two vertical plates after the speed reducer 33 descends to a preset position.

The present utility model also provides a cross-pulling apparatus comprising an exit track 100 and the sprocket-chain tray structure described above. The exit track 100 is mounted on top of the base 44 of the sprocket wheel and disc structure and nests with the sprocket wheel 42, 43 of the sprocket wheel and disc structure. A protection plate 45 is provided at the top end of the outlet rail 100.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. The utility model provides a sprocket chain dish structure, includes the backup pad, is used for installing orbital sprocket chain dish mechanism of export and actuating mechanism, sprocket chain dish mechanism includes the base, is located the sprocket of base top and be located the sprocket top, the base is installed the top of backup pad, actuating mechanism is located the below of backup pad, its characterized in that still includes fixed axle seat, the fixed axle seat cover is established the periphery of actuating mechanism's output shaft, the backup pad has the through-hole, fixed axle seat runs through the through-hole sets up, the base ring is established the periphery of fixed axle seat, the sprocket cover is established the periphery of fixed axle seat, the sprocket sets up the top of fixed axle seat, actuating mechanism is used for through its output shaft drive fixed axle seat rotates, thereby can drive sprocket and sprocket rotate.

2. The sprocket chain wheel structure according to claim 1, further comprising a first fixing plate and a second fixing plate, wherein a bearing seat is sleeved on the periphery of the fixing shaft seat, a bearing is arranged between the bearing seat and the fixing shaft seat, the bearing seat is positioned between the chain wheel and the sprocket wheel, a first end of the first fixing plate is sleeved on the periphery of the bearing seat, a groove is formed in the bottom of the second end of the first fixing plate, the second fixing plate is positioned on one side of the sprocket wheel, the first end of the second fixing plate is arranged on the top end of the base, and the second end of the second fixing plate is matched with the groove.

3. The sprocket chain plate structure as set forth in claim 2, further comprising a support block disposed at a top end of said base, said support block having a support plate threaded hole in which an adjusting bolt is threadedly mounted, a distal end of said adjusting bolt abutting against a second end portion of said first fixing plate.

4. The sprocket wheel structure as set forth in claim 1, wherein a boss is formed at an outer circumference of the fixed shaft seat, and the sprocket wheel is disposed at a top end of the boss.

5. The sprocket chain plate structure according to claim 1, further comprising a bottom plate, wherein two ends of the supporting plate are respectively arranged at the top end of the bottom plate through two vertical plates, the driving mechanism comprises a driving motor and a speed reducer, the speed reducer is connected with the driving motor, a motor supporting column is detachably arranged at the top end of the bottom plate, the driving motor is arranged at the top end of the motor supporting column, the speed reducer is arranged between the two vertical plates, a speed reducer support is detachably arranged at the top end of the bottom plate, the speed reducer is arranged at the top end of the speed reducer support and is arranged at the bottom end of the supporting plate, the fixed shaft seat is sleeved on the periphery of an output shaft of the speed reducer, the driving motor is used for driving the speed reducer to rotate, and the speed reducer drives the fixed shaft seat to rotate through an output shaft of the speed reducer, so that the sprocket and the chain plate can be driven to rotate.

6. The sprocket chain plate structure according to claim 5, wherein a first elastic rubber pad is mounted on a top thread of the motor support column, the driving motor is disposed on the first elastic rubber pad, a second elastic rubber pad is mounted on a top thread of the speed reducer support, and the speed reducer is disposed on the second elastic rubber pad.

7. The sprocket chain plate structure according to claim 5, wherein a first support column screw hole is provided at a bottom end of the motor support column, a second support column screw hole corresponding to the first support column screw hole is provided at a top end of the bottom plate, first fasteners are installed in the first support column screw hole and the second support column screw hole, the motor support column has a support column through groove communicated with the first support column screw hole, and a head of the first fasteners is located in the support column through groove.

8. The sprocket chain plate structure according to claim 5, wherein a first support screw hole is provided at a bottom end of the speed reducer support, a second support screw hole corresponding to the first support screw hole is provided at a top end of the bottom plate, second fasteners are installed in the first support screw hole and the second support screw hole, the speed reducer support has a support through groove communicated with the first support screw hole, and a head of the second fastener is located in the support through groove.

9. The sprocket chain plate structure according to claim 5, wherein said speed reducer is detachably mounted at a bottom end of said support plate; the bottom of backup pad is equipped with first installation screw hole, the speed reducer be equipped with the second installation screw hole that first installation screw hole corresponds, install the speed reducer fastener in first installation screw hole and the second installation screw hole.

10. A track-pull apparatus comprising a sprocket chain as set forth in any one of claims 1-9.