CN111734811A - A sprocket with stable transmission - Google Patents

Abstract

The invention relates to the technical field of transmission. The driving chain wheel and the driven chain wheel both comprise central shafts, the cross sections of the central shafts are regular hexagons, threaded connecting sections are arranged at two ends of each central shaft, and locking nuts are matched on the threaded connecting sections; the central shaft is sleeved with a first mounting sleeve and a second mounting sleeve, and the first mounting sleeve and the second mounting sleeve are locked on the central shaft through locking nuts; first installation cover and second installation cover all are provided with the fixed disk on the global of the one end of carrying on the back mutually, two the wheel body all is the annular, and passes through connecting bolt coaxial fixation respectively in the quotation of two fixed disks. The combined driven chain wheel and the driving chain wheel are adopted, the assembly mode is stable and simple, and the combined driven chain wheel and the driving chain wheel are particularly suitable for large-size driven chain wheels and driving chain wheels and further meet the transmission requirement of large torque.

Description

A sprocket with stable transmission

technical field

The invention relates to the technical field of mechanical transmission, in particular to a sprocket with stable transmission.

Background technique

The traditional mechanical transmission methods include gear transmission, belt transmission, worm gear transmission, screw nut pair transmission, chain sprocket transmission, etc. Among them, chain sprocket transmission is a very common transmission method, which is widely used in transportation, lifting, etc. , as well as various modern automatic equipment. As the name suggests, the most basic unit of a chain sprocket transmission is usually a chain and two sprockets. The chain is wound around the two sprockets, and one of the two sprockets rotates actively and the other rotates passively to form a power output. . The chain sprocket transmission has the advantages of wide adaptability and simple structure, but it also has the defects of small transmission torque, fluctuation in the transmission process, and high noise. Therefore, the present invention focuses on the defects of the traditional chain sprocket and improves it, so as to improve its comprehensive performance.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a sprocket with stable transmission that can adapt to large torque transmission.

In order to achieve the above purpose of the invention, the technical solution adopted in the present invention is: a sprocket with stable transmission, including a driving sprocket, a driven sprocket and a chain, the chain is formed by connecting a plurality of chain links, and the chain is wound around the chain. Set on the gear teeth of the driving sprocket and the driven sprocket;

The driving sprocket and the driven sprocket both include two wheel bodies arranged side by side, the number of the chains is two, the two chains are arranged side by side, and are correspondingly wound around the two groups of the driving sprocket and the driven sprocket. On the teeth of the opposite wheel body;

The driving sprocket and the driven sprocket both include a central shaft, the cross section of the central shaft is a regular hexagon, two ends of the central shaft are provided with threaded connection sections, and the threaded connection sections are fitted with locking nuts; A first installation sleeve and a second installation sleeve are sleeved on the central shaft, and the first installation sleeve and the second installation sleeve are locked on the central shaft by a locking nut;

The first mounting sleeve and the second mounting sleeve are provided with fixed disks on the peripheral surfaces of the opposite ends, and the two wheel bodies are annular, and are coaxially fixed on the disk surfaces of the two fixed disks through connecting bolts. .

Preferably, opposite ends of the first installation sleeve and the second installation sleeve are respectively provided with a corresponding abutment groove and abutment head, and the abutment head is penetrated in the abutment groove.

Preferably, a rubber pad is provided between the groove bottom of the abutting groove and the end face of the abutting head.

Preferably, the first installation sleeve and the second installation sleeve are provided with a rubber buffer ring, and the rubber buffer ring is adapted to the inner ring of the wheel body and is located in the inner ring of the wheel body; the first installation The sleeve and the second installation sleeve are also covered with a fastening sleeve, the fastening sleeve is connected with the first installation sleeve and the second installation sleeve through fastening bolts, and the rubber buffer ring is pressed on the fixing plate by the fastening sleeve on the disk.

Preferably, the outer edge of the rubber buffer ring extends outward to form a ring of side gaskets, and the side gasket is sandwiched between the wheel body and the fixed plate.

Preferably, the two chains are provided with an overload buffer zone, the overload buffer zone is opposite to one link of the chain, and the link corresponding to the overload buffer zone is composed of a front section and a rear section that are independent of each other; A first crossbar and a second crossbar are respectively arranged between the middle and rear sections, the first crossbar and the second crossbar are parallel to each other, and an overload protection component is arranged on the first crossbar and the second crossbar .

Preferably, the overload protection assembly includes a sliding rod disposed on the first crossbar, the sliding rod is disposed on the side of the first crossbar facing the second crossbar, and is perpendicular to the first crossbar; the second crossbar The cross bar is provided with a sliding hole matched with the sliding rod, and the sliding rod is penetrated in the sliding hole; the side wall of the middle section of the sliding rod is provided with a ring groove with a semicircular cross-section, and the sliding hole The inner walls of both sides are provided with side holes, the positions of the side holes are opposite to the ring groove, and the side holes are sequentially provided with a matching top tightening spring, a top plate and a top ball from the inside to the outside; The ring groove is matched and is pressed in the ring groove by the top tightening spring and the top plate.

Preferably, the second cross bar is further provided with an adjustment hole penetrating the second cross bar, a side wall of the adjustment hole opposite to the side hole is provided with a bolt hole, and the bolt hole and the side hole are located at the same On a straight line, and the bolt hole penetrates to the side hole; it also includes an adjusting bolt matched with the bolt hole, the head of the adjusting bolt is located in the adjusting hole, and the rod portion of the adjusting bolt extends into the side hole; The bottom is also provided with a push plate, and the rod portion of the adjusting bolt is in contact with the pressing spring through the push plate.

Preferably, the sliding rod extends beyond the sliding hole, and the end of the sliding rod is provided with an end plate, and a buffer spring is sleeved on the sliding rod, and the buffer spring is located between the end plate and the second transverse rod.

Preferably, two inner side walls of the sliding hole located above the side hole are also provided with a set of infrared radiation alarms, and the upper section of the sliding rod is provided with a light-avoiding hole that penetrates the sliding rod in a transverse direction.

The beneficial effects of the present invention are embodied in that the combined driven sprocket and driving sprocket are used, and the assembly method is stable and simple, and is especially suitable for large-sized driven sprocket and driving sprocket, and further adapts to the transmission demand of large torque. Specifically, the driven sprocket and the driving sprocket of the present invention are composed of main components such as the central shaft, the first and second mounting sleeves, and the wheel body. At the same time, in the case of high-torque transmission, considering the large wear of the gear teeth, even if the gear teeth are damaged, the present invention does not need to replace the entire driving sprocket and the driven sprocket, but only needs to replace the annular wheel body. Yes, overall lower maintenance costs. The preferably arranged rubber buffer ring can also transmit a part of the torsion force from the wheel body, improve the stress condition of the connecting bolt, and further improve the stability of the wheel body installation.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Figure 2 is a schematic view of the installation of the overload protection assembly in a top view;

Figure 3 is a schematic diagram of the installation of the sliding rod;

Fig. 4 is the structure schematic diagram of the light vacating hole on the sliding rod;

Figure 5 is a schematic structural diagram of a driving sprocket;

Figure 6 is a schematic diagram of the internal structure of the driving sprocket;

Fig. 7 is the installation schematic diagram of rubber wear-resistant sleeve;

Figure 8 is a schematic structural diagram of a rubber wear-resistant sleeve;

Fig. 9 is the structural representation of the gear sleeve;

Figure 10 is a schematic structural diagram of a pressure ring;

FIG. 11 is a left side view of FIG. 10 .

Detailed ways

As shown in Figure 1-11, a sprocket has many advantages, such as low noise, good stability, overload protection, suitable for high torque transmission, and small transmission fluctuation, and has excellent comprehensive performance indicators. Compared with the traditional chain sprocket drive combination, the basic structure of the present invention is equivalent to it, and also includes a driving sprocket 1, a driven sprocket 2 and a chain 3, etc., the chain 3 is formed by connecting a number of chain links 4, usually Using a bobbin chain, the chain 3 is wound on the teeth of the driving sprocket 1 and the driven sprocket 2 .

But the difference is that the driving sprocket 1 and the driven sprocket 2 of the present invention both include two wheel bodies 0 arranged side by side, adopting a double-row sprocket structure, the number of the chains 3 is two, two The chains 3 are arranged side by side, and are correspondingly wound around the gear teeth of the two groups of opposite wheel bodies 0 of the driving sprocket 1 and the driven sprocket 2 .

1. The existing chain sprocket drive combination is affected by its own characteristics during use, and is not suitable for high torque transmission requirements. This is mainly due to the following two reasons: 1. The chain does not have the function of overload protection. When the torque is too large, it is easy to cause the chain to break, which may lead to downtime for maintenance, or even damage to other equipment. 2. Considering the transmission requirements of high torque, the size of the sprocket is usually large. Considering the requirements of machining and heat treatment, this kind of sprocket is not convenient for one-time forming and processing, but a combined structure should be adopted. The stability of the combined assembly structure is still poor. Therefore, in the general direction suitable for high torque transmission, the present invention intends to improve the existing sprocket chain from the above two angles.

From the perspective of overload protection, as shown in FIG. 2 , the two chains 3 of the present invention are provided with overload buffer zones, the overload buffer zones are opposite to one link 4 of the chain 3, and the link corresponding to the overload buffer zone 4 is composed of anterior and posterior segments that are independent of each other. In other words, that is to say, the chain link 4 of the chain 3 corresponding to the overload buffer zone is composed of two sections, and the two sections are separable. A first cross bar 5 and a second cross bar 6 are respectively provided between the front sections and the rear sections of the two chains 3, the first cross bar 5 and the second cross bar 6 are parallel to each other, and the first cross bar 5 and the second cross bar 6 are provided with overload protection components. The function of the overload protection assembly is to complete the tripping of the first crossbar 5 and the second crossbar 6 when the torque is too large, and buffer the tripping to prevent the chain 3 from being damaged. In a normal state, the overload protection assembly can also ensure the connection between the first crossbar 5 and the second crossbar 6 to ensure smooth transmission of power.

There are many specific structures of the overload protection assembly. For example, the overload protection assembly may be composed of a pair of electromagnets and a pressure sensor. When it is detected that the pressure is too large, the electromagnets are powered off to realize tripping. However, this method is not only costly, but also has a relatively complex circuit layout and is difficult to maintain. For this reason, a better solution of the overload protection assembly of the present invention can also be shown in FIGS. 3 and 4 , the overload protection assembly includes a sliding rod 7 arranged on the first cross bar 5 , and the sliding rod 7 is arranged on the first cross bar 5 . The cross bar 5 faces the side of the second cross bar 6 and is perpendicular to the first cross bar 5 . The second transverse rod 6 is provided with a sliding hole 8 which is matched with the sliding rod 7 , and the sliding rod 7 is penetrated in the sliding hole 8 . The side wall of the middle section of the sliding rod 7 is provided with a ring groove 9 with a semicircular cross section, and side holes 10 are provided on the inner walls of both sides of the sliding hole 8. The position of the side hole 10 is the same as that of the ring groove 9. Oppositely, and the side hole 10 is provided with a matching pressing spring 11 , a top plate 12 and a top ball 13 in sequence from the inside to the outside. The top ball 13 is adapted to the ring groove 9 and pressed in the ring groove 9 by the top spring 11 and the top plate 12 .

The overload protection assembly includes the first cross bar 5, the second cross bar 6, the sliding bar 7, the sliding hole 8, the ring groove 9, the top spring 11, the top plate 12, the top ball 13 and other components. 11 Under the influence of the force, the top plate 12 tightly abuts the top ball 13 in the ring groove 9 of the sliding rod 7 to realize the connection between the sliding rod 7 and the sliding hole 8, that is, the first cross rod 5 and the second The connection of the cross bar 6, at this time, the overload buffer zone corresponds to the front section and the rear section of the chain link 4, which is equivalent to the conventional chain link 4. When the torque is too large, the sliding rod 7 installed on the first cross rod 5 is subjected to a large force, which overcomes the elastic force of the pressing spring 11 and presses the top ball 13 into the side hole 10. At this time, the sliding rod 7 and the sliding hole 8 They can slide relative to each other, and the distance between the first cross bar 5 and the second cross bar 6 can be adjusted, which substantially realizes the tripping of the transmission of the chain link 4 and forms overload protection.

On this basis, in order to cope with different torsional overload protection, a better solution of the present invention may also be that the pressure range of the overload protection is adjustable. To this end, as shown in FIG. 3 , the second cross bar 6 is further provided with an adjusting hole 14 penetrating the second cross bar 6 , and a bolt is provided on the side wall of the adjusting hole 14 opposite to the side hole 10 . The hole 15 is located on the same line as the side hole 10 , and the bolt hole 15 penetrates to the side hole 10 . It also includes an adjusting bolt 16 that matches the bolt hole 15 , the head of the adjusting bolt 16 is located in the adjusting hole 14 , and the rod portion of the adjusting bolt 16 extends into the side hole 10 . The bottom of the side hole 10 is also provided with a push plate 17 , and the rod portion of the adjustment bolt 16 is in contact with the push-up spring 11 through the push plate 17 . By rotating the adjusting bolt 16 , the present invention can change the length of the adjusting bolt 16 extending into the side hole 10 , thereby changing the compression rate of the pressing spring 11 . The pressure change on 13 finally realizes the adjustment of the tripping pressure.

In order to prevent the sliding rod 7 from sliding out of the sliding hole 8 directly after the tripping is completed, the chain 3 is disconnected. According to the present invention, the sliding rod 7 extends beyond the sliding hole 8, and the end of the sliding rod 7 is provided with an end plate 18, and the end plate 18 functions as a limiter. A buffer spring 19 is sleeved on the sliding rod 7 , and the buffer spring 19 is located between the end plate 18 and the second transverse rod 6 . The buffer spring 19 can buffer the increased force instantaneously to prevent the chain 3 and the overload protection assembly from being damaged.

In order to realize synchronous shutdown protection when overload protection starts. The present invention is also provided with a detection device for whether the overload protection state is activated. As shown in Figures 3 and 4, a group of infrared radiation alarms 20 are also provided on the two inner side walls of the sliding hole 8 above the side hole 10. The upper section of the sliding rod 7 is provided with a light escape hole 21 which penetrates the sliding rod 7 in the transverse direction. When the overload protection is activated, that is, when the sliding rod 7 slides, the light on the sliding rod 7 gives way to the hole 21 to reach the position corresponding to the infrared radiation alarm 20, and the infrared radiation alarm 20 detects the alarm signal and sends it to The overall controller of the equipment realizes synchronous shutdown.

Of course, the chain 3 can be provided with multiple overload buffer zones according to the present invention, and the multiple overload buffer zones are evenly distributed on the chain 3 . In this way, it can be ensured that there is always at least one overload protection zone on the horizontal section of the chain 3, and the overall overload protection performance of the chain 3 is better.

From the perspective of the combined assembly structure of the sprocket, as shown in Figures 5 and 6, the driving sprocket 1 and the driven sprocket 2 of the present invention both include a central shaft 22, and the cross-section of the central shaft 22 is a regular hexagon , both ends of the central shaft 22 are provided with threaded connection sections 23, and the threaded connection sections 23 are fitted with locking nuts 24. A first installation sleeve 25 and a second installation sleeve 26 are sleeved on the central shaft 22 , and the first installation sleeve 25 and the second installation sleeve 26 are locked on the central shaft 22 by a locking nut 24 . The first mounting sleeve 25 and the second mounting sleeve 26 are provided with fixed discs 27 on the peripheral surfaces of the opposite ends. on the disk surface of the fixed disk 27 .

The driven sprocket 2 and the driving sprocket 1 of the present invention are composed of the central shaft 22, the first and second installation sleeves 25 and 26, the wheel body 0 and other main components. At the same time, when carrying out high-torque transmission, considering the large wear of the gear teeth, even if the gear teeth are damaged, the present invention does not need to replace the entire driving sprocket 1 and the driven sprocket 2, but only needs to replace the annular wheel body 0. Replacement is all it takes, reducing maintenance costs overall.

On this basis, in order to further improve the installation stability of the sprocket, the first installation sleeve 25 and the second installation sleeve 26 are provided with a rubber buffer ring 32 on the outer sleeve, and the rubber buffer ring 32 is in contact with the inner ring of the wheel body 0 . Fitted and located in the inner ring of the wheel body 0 , that is to say, the outer edge of the rubber buffer ring 32 is in contact with the inner edge of the wheel body 0 . The contact method can be surface contact or tooth contact, that is, teeth meshing with each other are provided on the inner surface of the wheel body 0 and the outer peripheral surface of the rubber buffer ring 32. The structure is relatively simple, not shown in the figure. Shows. The rubber buffer ring 32 can also transmit a part of the torsion force from the wheel body 0 , so as to improve the stress condition of the connecting bolt 28 and further improve the installation stability of the wheel body 0 .

The installation method of the rubber buffer ring 32 is as follows: the first installation sleeve 25 and the second installation sleeve 26 are also covered with a fastening sleeve 33, and the fastening sleeve 33 is connected with the first installation sleeve 25 and the first installation sleeve 25 through the fastening bolts 34. The second installation sleeve 26 is connected, and the rubber buffer ring 32 is pressed against the disk surface of the fixed disk 27 by the fastening sleeve 33 . On this basis, the outer edge of the rubber buffer ring 32 may also extend outward to form a ring of side gaskets 351 , and the side gaskets 351 are sandwiched between the wheel body 0 and the fixed plate 27 . The side gasket 351 has a certain amount of compression, which can improve the tightness of the combination between the fixed disk 27 and the wheel body 0 .

In addition, in order to further improve the installation stability of the first installation sleeve 25 and the second installation sleeve 26 on the central axis 22 , the opposite ends of the first installation sleeve 25 and the second installation sleeve 26 are respectively provided with a matching resistance The abutting groove 29 and the abutting head 30 , the abutting head 30 is inserted into the abutting groove 29 . Similarly, a rubber pad 31 may also be provided between the groove bottom of the abutting groove 29 and the end face of the abutting head 30 .

2. In the existing chain 3 and sprocket combined transmission mode, the chain 3 has large fluctuations, and at the same time, the transmission noise and wear are large, and the large fluctuation is mainly due to the long horizontal section of the chain 3, which has a certain gravity itself, and it has a certain gravity. Under the action, it has a certain sag causing fluctuation. The main reason for the large noise and wear is that both the sprocket and the chain 3 are made of metal, which has a large wear during the rigid contact process. In order to solve the above problems, the present invention optimizes and improves the existing mechanism in terms of alleviating the rigid contact and reducing the fluctuation of the chain 3 .

From the perspective of alleviating rigid contact, as shown in FIGS. 7 and 8 , the edge of the wheel body 0 of the present invention is covered with a layer of U-shaped groove-shaped rubber wear-resistant sleeves 36 , and the rubber wear-resistant sleeves 36 are strips. The rubber wear-resistant sleeve 36 is formed with a number of gear sleeves 37 that are matched with the gear teeth corresponding to the number of gear teeth, and the gear sleeves 37 are sleeved on the gear teeth. The rubber wear-resistant sleeve 36 is fixedly arranged on the wheel body 0, and a specific fixing method thereof may be bonded to the wheel body 0 by a high-strength adhesive. However, in order to facilitate replacement, it is better to set a ring-shaped pressure groove on both sides of the wheel body 0, and a pressure ring 38 is fitted in the pressure groove, and both sides of the rubber wear-resistant sleeve 36 The edge clips are arranged in the pressing groove and are pressed by the pressing ring 38 . The pressure rings 38 on both sides of the wheel body 0 are locked on the wheel body 0 by the locking bolts 352. Of course, in order to improve the compression degree, a concave groove matching the pressure groove can also be formed on the rubber wear-resistant sleeve 36 in advance. dent, directly press the dent into the groove.

In the present invention, since a layer of rubber wear-resistant sleeve 36 is sleeved on the outer edge of the wheel body 0, the direct pure rigid contact between the gear teeth on the wheel body 0 and the chain 3 can be avoided, thereby reducing the wear between the two, and at the same time , This method also greatly reduces the metal friction and impact noise between the two, and improves the comfort during use. In addition, since the rubber wear-resistant sleeve 38 can also increase the meshing force between the gear teeth and the chain 3, it can play an anti-slip effect and prevent the chain 3 from slipping.

Of course, in order to ensure the stability of the gear sleeve 37 on the gear teeth, as shown in FIG. There is an anti-retraction protrusion 40 matched with the anti-retraction groove 39 , and the anti-retraction protrusion 40 is located in the anti-retraction groove 39 . By cooperating with the anti-retraction groove 39 and the anti-retraction protrusion 40, the tooth sleeve 37 can be effectively prevented from being separated from the gear teeth.

From the perspective of reducing the fluctuation of the chain 3, as shown in FIG. 1, the horizontal section of the chain 3 between the driving sprocket 1 and the driven sprocket 2 according to the present invention is further provided with a fluctuation reducing component. It is composed of two wave reduction wheels 41 . The two wave reduction wheels 41 are both provided with a number of gear teeth that are adapted to the chain links 4 on the chain 3 . The two wave reduction wheels 41 are staggered and arranged one above the other. Above and below the chain 3 , and the teeth of the wave reduction wheel 41 mesh with the links 4 of the chain 3 .

In the present invention, a fluctuation reducing component is arranged on the horizontal section where the fluctuation of the chain 3 is most obvious, and the two fluctuation reducing wheels 41 are alternately arranged on the chain 3 one by one, so as to form the limit and tension of the chain 3, which can prevent the horizontal section. sag. At the same time, since the present invention adopts the upper and lower joint limiting method, the effect of reducing the fluctuation is extremely obvious, and the stability and smoothness in the transmission process are greatly improved. Two horizontal segments of the chain 3 are provided with a set of wave reduction components, and the two horizontal segments are tensioned and limited at the same time.

Regarding the installation method of the wave reduction wheel 41 , the center fixing plate 42 is arranged between the two groups of the wave reduction components in the present invention, and the two wave reduction wheels 41 of each group of wave reduction components are jointly installed on a side fixing plate 43 , The side fixing plate 43 and the central fixing plate 42 are connected by connecting rods 44 . The central fixing plate 42 is provided with an installation hole 45 , and the central fixing plate 42 is arranged on the equipment foundation through the installation hole 45 , and this installation method is more reasonable and compact. On this basis, the fluctuation reducing wheel 41 is a ceramic wheel. The ceramic wheel made of ceramic material is used as the fluctuation reducing wheel 41, which is extremely wear-resistant, prolongs the service life and reduces the maintenance and repair cost.

Claims (10)

1. A chain wheel with stable transmission comprises a driving chain wheel (1), a driven chain wheel (2) and a chain (3), wherein the chain (3) is formed by connecting a plurality of chain links (4), and the chain (3) is wound on the gear teeth of the driving chain wheel (1) and the driven chain wheel (2);

the driving chain wheel (1) and the driven chain wheel (2) respectively comprise two wheel bodies (0) which are arranged side by side, the number of the chains (3) is two, the two chains (3) are arranged side by side and correspondingly wound on the wheel teeth of two groups of opposite wheel bodies (0) of the driving chain wheel (1) and the driven chain wheel (2);

the method is characterized in that: the driving chain wheel (1) and the driven chain wheel (2) both comprise a central shaft (22), the section of the central shaft (22) is in a regular hexagon shape, two ends of the central shaft (22) are provided with threaded connection sections (23), and the threaded connection sections (23) are matched with locking nuts (24); a first mounting sleeve (25) and a second mounting sleeve (26) are sleeved on the central shaft (22), and the first mounting sleeve (25) and the second mounting sleeve (26) are locked on the central shaft (22) through a locking nut (24);

first installation cover (25) and second installation cover (26) all are provided with fixed disk (27) on the global of the one end of carrying on the back mutually, two wheel body (0) all are the annular, and through connecting bolt (28) coaxial fixation respectively on the quotation of two fixed disks (27).

2. The drive stabilizing sprocket as set forth in claim 1, wherein: the first mounting sleeve (25) and the second mounting sleeve (26) are provided with a butt joint groove (29) and a butt joint head (30) which are matched with each other at opposite ends respectively, and the butt joint head (30) penetrates through the butt joint groove (29).

3. The drive stabilizing sprocket as set forth in claim 2, wherein: and a rubber pad (31) is arranged between the bottom of the abutting groove (29) and the end surface of the abutting head (30).

4. The drive stabilizing sprocket as set forth in claim 3, wherein: the first mounting sleeve (25) and the second mounting sleeve (26) are sleeved with rubber buffer rings (32), and the rubber buffer rings (32) are matched with the inner ring of the wheel body (0) and are positioned in the inner ring of the wheel body (0); first installation cover (25) and second installation cover (26) still overlap outward and be equipped with adapter sleeve (33), adapter sleeve (33) are connected with first installation cover (25) and second installation cover (26) through fastening bolt (34), rubber cushion ring (32) compress tightly on the quotation of fixed disk (27) through adapter sleeve (33).

5. The drive stabilizing sprocket as set forth in claim 4, wherein: the outer edge of the rubber buffer ring (32) extends outwards to form a ring of edge gaskets (351), and the edge gaskets (351) are clamped between the wheel body (0) and the fixed disc (27).

6. The drive stabilizing sprocket as set forth in claim 5, wherein: the two chains (3) are provided with overload buffer areas, the overload buffer areas are opposite to one chain link (4) of the chains (3), and the chain links (4) corresponding to the overload buffer areas are composed of mutually independent front sections and rear sections; be provided with first horizontal pole (5) and second horizontal pole (6) between the anterior segment of two chains (3), between the back end respectively, first horizontal pole (5) and second horizontal pole (6) are parallel to each other, be provided with overload protection subassembly on first horizontal pole (5) and second horizontal pole (6).

7. The drive stabilizing sprocket as set forth in claim 6, wherein: the overload protection assembly comprises a sliding rod (7) arranged on the first cross rod (5), and the sliding rod (7) is arranged on one surface, facing the second cross rod (6), of the first cross rod (5) and is perpendicular to the first cross rod (5); the second cross rod (6) is provided with a sliding hole (8) matched with the sliding rod (7), and the sliding rod (7) penetrates through the sliding hole (8); a circle of annular grooves (9) with semicircular sections are formed in the side wall of the middle section of the sliding rod (7), side holes (10) are formed in the inner walls of the two sides of the sliding hole (8), the positions of the side holes (10) are opposite to the annular grooves (9), and a jacking spring (11), a top plate (12) and a jacking ball (13) which are matched with each other are sequentially arranged in the side holes (10) from inside to outside; the jacking ball (13) is matched with the annular groove (9) and is pressed in the annular groove (9) through the jacking spring (11) and the top plate (12).

8. The drive stabilizing sprocket as set forth in claim 7, wherein: the second cross rod (6) is further provided with an adjusting hole (14) penetrating through the second cross rod (6), a bolt hole (15) is formed in the side wall of one side, opposite to the side hole (10), of the adjusting hole (14), the bolt hole (15) and the side hole (10) are located on the same straight line, and the bolt hole (15) penetrates through the side hole (10); the adjusting bolt is characterized by further comprising an adjusting bolt (16) matched with the bolt hole (15), the head of the adjusting bolt (16) is located in the adjusting hole (14), and the rod part of the adjusting bolt (16) extends into the side hole (10); the bottom of side opening (10) still is provided with push pedal (17), the pole portion of adjusting bolt (16) contacts with top tight spring (11) through push pedal (17).

9. The drive stabilizing sprocket as set forth in claim 8, wherein: slide bar (7) extend and exceed slide hole (8), and the tip of slide bar (7) is provided with end disc (18), the cover is equipped with buffer spring (19) on slide bar (7), buffer spring (19) are located between end disc (18) and second horizontal pole (6).

10. The drive stabilizing sprocket as set forth in claim 9, wherein: be located still be provided with a set of infrared ray correlation alarm (20) on two inside walls of sliding hole (8) of side opening (10) top, be provided with in the upper segment of sliding rod (7) along transversely running through light hole (21) of stepping down of sliding rod (7).

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