A bridge crossing assembly having a self-tensioning conveyor chain

Abstract

The utility model provides a kind of bridge crossing assembly with self-tensioning conveying chain, comprising: shell, driving shaft, driven shaft, chain harrow assembly and self-tensioning mechanism, the driving shaft and the driven shaft are rotatably installed in the shell, the chain harrow assembly is located on the driving shaft and the driven shaft, the self-tensioning mechanism is installed on the shell, the self-tensioning mechanism is connected with the driven shaft, the self-tensioning mechanism drives the driven shaft to move on the shell in the direction away from the driving shaft, to tension the chain harrow assembly.Self-tensioning mechanism is automatically adjusted according to the change of conveying chain length The position of driven shaft, thereby adjusting the tension of conveying chain, ensure that the bridge crossing continuously and stably the material of cutting platform is delivered to threshing cylinder.Bridge crossing assembly self-tensioning mechanism can automatically adjust the tension of chain harrow assembly when conveying chain length changes in chain harrow assembly, without frequent downtime inspection adjustment, harvester effective working time is long, and harvesting efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of combine harvester bridge technology, and in particular to a bridge assembly with a self-tensioning conveyor chain. Background Technology

[0002] The threshing bridge is a "bridge passage" connecting the header and the threshing machine, responsible for smoothly and evenly conveying the crop to the threshing drum. The threshing bridge includes a housing that serves as the conveying passage, a drive shaft and a driven shaft rotatably mounted in the housing, and a chain rake assembly (the chain rake assembly includes a conveyor chain and a chain rake fixed to the conveyor chain). A sprocket is mounted on the drive shaft, and a drum welding structure is provided on the driven shaft. The chain rake assembly is wound around the sprocket and the drum welding structure. The housing is equipped with a manual tension adjustment mechanism for adjusting the tension of the chain rake assembly.

[0003] When a combine harvester is operating, excessive feed at the header or prolonged operation can cause the conveyor chain in the rake assembly to stretch. Timely tensioning of the rake assembly is necessary to prevent damage, chain skipping or tooth breakage, and the rake striking the base plate of the housing. In practice, users frequently need to stop the machine to check the tension of the conveyor chain and manually adjust it, reducing the harvester's effective operating time and lowering harvesting efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a bridge assembly with a self-tensioning conveyor chain, which addresses the shortcomings of the existing technology.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A bridge assembly with a self-tensioning conveyor chain includes: a housing, a drive shaft, a driven shaft, a chain rake assembly, and a self-tensioning mechanism. The drive shaft and the driven shaft are rotatably mounted in the housing. The chain rake assembly is mounted on the drive shaft and the driven shaft. The self-tensioning mechanism is mounted on the housing and connected to the driven shaft. The self-tensioning mechanism drives the driven shaft to move away from the drive shaft on the housing to tension the chain rake assembly.

[0006] The beneficial effects of adopting this utility model's technical solution are: the self-tensioning mechanism automatically adjusts the position of the driven shaft according to changes in the conveyor chain length, thereby adjusting the tension of the conveyor chain and ensuring that the bridge continuously and stably conveys material from the header to the threshing drum. The self-tensioning mechanism of the bridge assembly can automatically adjust the tension of the chain rake assembly in real time according to changes in the conveyor chain length during the chain rake assembly, eliminating the need for frequent machine stops for inspection and adjustment, resulting in a longer effective working time and higher harvesting efficiency for the harvester.

[0007] Furthermore, the self-tensioning mechanism includes a sliding member and an elastic component, the driven shaft is disposed on the sliding member, the sliding member slides on the housing, and the two ends of the elastic component abut against the sliding member and the housing, respectively.

[0008] The beneficial effects of adopting the above-mentioned further technical solution are: the elastic component is used to always provide the sliding component with a force that drives the driven shaft to move away from the driving shaft to tension the chain rake assembly. The setting of the sliding component and the elastic component makes it easy to automatically adjust the position of the driven shaft according to the change of the conveyor chain length, thereby adjusting the tension of the conveyor chain and ensuring that the bridge continuously and stably conveys the material of the cutting table to the threshing drum.

[0009] Furthermore, the housing is provided with a pad, and the sliding member is slidably supported on the upper surface of the pad.

[0010] The beneficial effects of adopting the above-mentioned further technical solution are: the pad can be replaced when it wears out. Using the pad prevents the slider from sliding directly on the housing, thus preventing housing wear and eliminating the need to replace the entire housing, thereby reducing maintenance costs.

[0011] Furthermore, the two ends of the driven shaft are rotatably mounted on a mounting plate, the mounting plate being located inside the housing, and the housing having elongated holes on both sides along the driven shaft away from the driving shaft; the sliding member is fixedly connected to the mounting plate by a connector, the connector passing through the elongated holes of the housing.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are: the elongated hole in the housing facilitates the sliding component to drive the driven shaft to move away from the driving shaft to tension the chain rake assembly. The mounting plate facilitates the connection between the sliding component and the driven shaft.

[0013] Furthermore, the sliding member includes a slider, an adjusting rod, and a pad. The slider is slidably connected to the pad and fixedly connected to the connecting member. One end of the adjusting rod is fixedly connected to the slider, and the other end is slidably mounted on the housing. The pad is sleeved on the adjusting rod, and the elastic member abuts between the pad and the housing.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are: by sliding the slider on the housing, it is easy to drive the driven shaft to move smoothly away from the driving shaft, preventing the driven shaft from shaking and improving stability and reliability.

[0015] Furthermore, a first bracket and a second bracket are fixedly provided on the housing; the pad and the slider are respectively located in the first bracket, the pad is fixed to the lower side plate of the first bracket, the first bracket is provided with a bracket elongated hole corresponding to the elongated hole of the housing, the connector passes through the bracket elongated hole; the other end of the adjusting rod passes through and is slidably connected to the second bracket, and the two ends of the elastic member abut against the pad and the second bracket respectively.

[0016] The beneficial effects of adopting the above-mentioned further technical solutions are: the bracket facilitates the installation of pads, sliders, elastic components and adjusting rods; the bracket and the housing are integrated, resulting in high overall strength of the housing.

[0017] Furthermore, gaps are left between the connector and the walls of the elongated holes in the housing and the bracket, respectively.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are: by controlling the gap between the slider and the housing wall through the connector, the wear of the housing wall during slider movement is avoided, which would lead to the replacement of the entire housing. At the same time, by controlling the up and down position of the connector through the pad block, the connector does not come into contact with the wall of the elongated hole, which can also avoid contact with the housing and damage to the housing.

[0019] Furthermore, the first bracket is a U-shaped bracket, the slider and the pad are located inside the U-shaped bracket, and a gap is left between the slider and the base plate of the first bracket.

[0020] The beneficial effect of adopting the above-mentioned further technical solution is that it avoids the need to replace the entire housing due to wear on the housing wall during slider movement.

[0021] Furthermore, a gap is left between the slider and the upper side plate of the first bracket.

[0022] The beneficial effect of adopting the above-mentioned further technical solution is to avoid contact between the slider and the bracket, thus preventing wear.

[0023] Furthermore, the position of the pad on the adjusting rod is adjustable, and the second bracket is provided with an anti-wear sleeve, in which the adjusting rod slides.

[0024] The beneficial effect of adopting the above-mentioned further technical solution is to prevent wear on the second support.

[0025] The advantages of this invention in its additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is one of the structural schematic diagrams of a bridge assembly with a self-tensioning conveyor chain provided in an embodiment of the present invention.

[0028] Figure 2 This is the second structural schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided in this embodiment of the utility model.

[0029] Figure 3 The third schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided in this embodiment of the present invention.

[0030] Figure 4 The fourth schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided in this embodiment of the present invention.

[0031] Figure 5 The fifth schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided in this embodiment of the present utility model.

[0032] Figure 6 This is the sixth structural schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided for an embodiment of this utility model.

[0033] Figure 7 This is the seventh structural schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided for an embodiment of this utility model.

[0034] Figure 8 This is the eighth schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided in this embodiment of the present invention.

[0035] Figure 9 This is the ninth structural schematic diagram of the bridge assembly with a self-tensioning conveyor chain provided for an embodiment of this utility model.

[0036] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Drive shaft; 3. Driven shaft; 4. Chain rake assembly; 5. Self-tensioning mechanism; 6. Adjusting rod; 7. Elastic component; 8. Slider; 9. Long slot in housing; 10. Mounting plate; 11. First bracket; 12. Pad; 13. Connector; 14. Second bracket; 15. Pad plate; 16. Adjusting nut; 17. Anti-wear sleeve; 18. Sleeve; 19. Conveyor chain. Detailed Implementation

[0037] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] like Figures 1 to 9As shown, this utility model embodiment provides a bridge assembly with a self-tensioning conveyor chain, including: a housing 1, a drive shaft 2, a driven shaft 3, a chain rake assembly 4, and a self-tensioning mechanism 5. The drive shaft 2 and the driven shaft 3 are both rotatably mounted in the housing 1. The chain rake assembly 4 is disposed on the drive shaft 2 and the driven shaft 3. The self-tensioning mechanism 5 is mounted on the housing 1 and connected to the driven shaft 3. The self-tensioning mechanism 5 drives the driven shaft 3 to move on the housing 1 away from the drive shaft 2 to tension the chain rake assembly 4.

[0044] The beneficial effects of adopting this utility model's technical solution are: the self-tensioning mechanism automatically adjusts the position of the driven shaft according to changes in the conveyor chain length, thereby adjusting the tension of the conveyor chain and ensuring that the bridge continuously and stably conveys material from the header to the threshing drum. The self-tensioning mechanism of the bridge assembly can automatically adjust the tension of the chain rake assembly in real time according to changes in the conveyor chain length during the chain rake assembly, eliminating the need for frequent machine stops for inspection and adjustment, resulting in a longer effective working time and higher harvesting efficiency for the harvester.

[0045] The self-tensioning mechanism 5 can be two in number, with each self-tensioning mechanism 5 installed on one side of the housing 1 and connected to both ends of the driven shaft 3. Corresponding self-tensioning mechanisms are provided on both sides of the bridge assembly to facilitate synchronous movement of both ends of the driven shaft away from the driving shaft, thus tensioning the chain rake assembly, preventing the driven shaft from tilting, and improving stability and reliability.

[0046] A sprocket is mounted on the drive shaft 2, and a roller welded structure is mounted on the driven shaft 3. The chain rake assembly 4 is wound around the sprocket and the roller welded structure. Alternatively, both the drive shaft 2 and the driven shaft 3 are equipped with sprockets, and the chain rake assembly 4 is wound around the sprockets of the drive shaft 2 and the driven shaft 3. The roller welded structure on the driven shaft 3 can be replaced by a sprocket.

[0047] The roller welded structure on the driven shaft can be replaced by a sprocket. This improves applicability and allows for the selection of either the roller welded structure or a sprocket to be installed on the driven shaft based on actual needs.

[0048] The chain rake assembly 4 includes a conveyor chain 19 and a chain rake. The conveyor chain 19 is wound around the drive shaft 2 and the driven shaft 3, and the chain rake is fixedly mounted on the conveyor chain 19. The arrangement of the conveyor chain and the chain rake facilitates the smooth and even conveying of crops to the threshing drum by the bridge assembly.

[0049] like Figures 1 to 9As shown, the self-tensioning mechanism 5 further includes a sliding member and an elastic member 7. The driven shaft 3 is disposed on the sliding member, the sliding member slides on the housing 1, and the two ends of the elastic member 7 abut against the sliding member and the housing 1 respectively.

[0050] The beneficial effects of adopting the above-mentioned further technical solution are: the elastic component is used to always provide the sliding component with a force that drives the driven shaft to move away from the driving shaft to tension the chain rake assembly. The setting of the sliding component and the elastic component makes it easy to automatically adjust the position of the driven shaft according to the change of the conveyor chain length, thereby adjusting the tension of the conveyor chain and ensuring that the bridge continuously and stably conveys the material of the cutting table to the threshing drum.

[0051] like Figures 1 to 9 As shown, the housing 1 is further provided with a pad 12, and the sliding member is slidably supported on the upper surface of the pad 12. The upper surface of the pad 12 extends in a direction parallel to the direction of the driven shaft 3 away from the driving shaft 2.

[0052] The beneficial effects of adopting the above-mentioned further technical solution are: the pad can be replaced when it wears out. Using the pad prevents the slider from sliding directly on the housing, thus preventing housing wear and eliminating the need to replace the entire housing, thereby reducing maintenance costs.

[0053] The pad 12 is preferably PET, but can also be made of wear-resistant metal or non-metal materials such as nylon, PEEK, or 45 steel.

[0054] like Figures 1 to 9 As shown, further, the two ends of the driven shaft 3 are rotatably mounted on a mounting plate 10, the mounting plate 10 is located inside the housing 1, and the housing 1 has elongated holes 9 on both sides along the direction away from the driving shaft 2 of the driven shaft 3; the sliding member is fixedly connected to the mounting plate 10 by a connector 13, the connector 13 passing through the elongated holes 9.

[0055] The beneficial effects of adopting the above-mentioned further technical solution are: the elongated hole in the housing facilitates the sliding component to drive the driven shaft to move away from the driving shaft to tension the chain rake assembly. The mounting plate facilitates the connection between the sliding component and the driven shaft.

[0056] like Figures 1 to 9 As shown, the sliding member further includes a slider 8, an adjusting rod 6, and a pad 15. The slider 8 is slidably connected to the pad block 12, and the slider 8 is fixedly connected to the connecting member 13. One end of the adjusting rod 6 is fixedly connected to the slider 8, and the other end is slidably mounted on the housing 1. The pad 15 is sleeved on the adjusting rod 6, and the elastic member 7 abuts between the pad 15 and the housing 1.

[0057] The beneficial effects of adopting the above-mentioned further technical solution are: by sliding the slider on the housing, it is easy to drive the driven shaft to move smoothly away from the driving shaft, preventing the driven shaft from shaking and improving stability and reliability.

[0058] The slider can be U-shaped, L-shaped, solid, or other similar structures. The slider 8 is fixedly connected to the mounting plate 10 by a pair of bolts, which are slidably installed in the elongated holes 9 of the housing. The U-shaped slider simplifies the structure, reduces its weight, and improves the flexibility of the self-tensioning mechanism. The pair of bolts simplifies the structure, facilitates connection between the slider and the mounting plate, prevents relative wobbling between the slider and the mounting plate, prevents the driven shaft from wobbling, and improves stability and reliability. Each bolt is fitted with a connecting piece 13, which is slidably installed in the elongated holes 9 of the housing without contact.

[0059] like Figures 1 to 9 As shown, further, a first bracket 11 and a second bracket 14 are fixedly provided on the housing 1; the pad 12 and the slider 8 are respectively located in the first bracket 11, the pad 12 is fixed to the lower side plate of the first bracket 11, the first bracket 11 is provided with a bracket elongated hole corresponding to the elongated hole 9 of the housing, the connecting member 13 passes through the bracket elongated hole; the other end of the adjusting rod 6 passes through and is slidably connected to the second bracket 14, and the two ends of the elastic member 7 abut against the pad 15 and the second bracket 14 respectively.

[0060] The beneficial effects of adopting the above-mentioned further technical solutions are: the bracket facilitates the installation of pads, sliders, elastic components and adjusting rods; the bracket and the housing are integrated, resulting in high overall strength of the housing.

[0061] The first bracket 11 and the second bracket 14 can both be U-shaped brackets or L-shaped brackets. The elastic component 7 can be a compression spring. The adjusting rod 6 is threadedly connected to an adjusting nut 16, which abuts against the pad 15, and the pad 15 is slidably sleeved on the adjusting rod 6. The adjusting rod is threadedly connected to an adjusting nut, which contacts the pad, and the pad is loosely sleeved on the adjusting rod. Rotating the adjusting nut adjusts the compression of the spring.

[0062] like Figures 1 to 9 As shown, further, gaps are left between the connector 13 and the walls of the elongated hole 9 in the housing and the elongated hole in the bracket.

[0063] The beneficial effects of adopting the above-mentioned further technical solution are: by controlling the gap between the slider and the housing wall through the connector, the wear of the housing wall during slider movement is avoided, which would lead to the replacement of the entire housing. At the same time, by controlling the up and down position of the connector through the pad block, the connector does not come into contact with the wall of the elongated hole in the housing, which can also avoid contact with the housing and damage to the housing.

[0064] In this configuration, connector 13 is a connecting sleeve, which is fixed to slider 8 and abuts against mounting plate 10. The connecting sleeve is fitted onto bolts, and slider 8 and mounting plate 10 are connected by bolts. Alternatively, connector 13 is a connecting sleeve, which is clamped between slider 8 and mounting plate 10. The connecting sleeve is fitted onto bolts, and slider 8 and mounting plate 10 are connected by bolts.

[0065] like Figures 1 to 9 As shown, the first bracket 11 is a U-shaped bracket, the slider 8 and the pad 12 are located inside the U-shaped bracket, and there is a gap between the slider 8 and the base plate of the first bracket 11.

[0066] The beneficial effect of adopting the above-mentioned further technical solution is that it avoids the need to replace the entire housing due to wear on the housing wall during slider movement.

[0067] Furthermore, a gap is left between the slider 8 and the upper side plate of the first bracket 11.

[0068] The beneficial effect of adopting the above-mentioned further technical solution is to avoid contact between the slider and the bracket, thus preventing wear.

[0069] like Figures 1 to 9 As shown, the position of the pad 15 on the adjusting rod 6 is adjustable, and the second bracket 14 is provided with an anti-wear sleeve 17, in which the adjusting rod 6 slides.

[0070] The beneficial effect of adopting the above-mentioned further technical solution is to prevent wear on the second support.

[0071] The elastic component 7 has two ends that abut against the pad 15 and the anti-wear sleeve 17, respectively. A sleeve 18 is fitted over the outer side of the elastic component 7, and the sleeve 18 is located between the pad 15 and the anti-wear sleeve 17. An anti-wear sleeve is fitted over the other end of the adjusting rod, which passes through and slidably connects with the anti-wear sleeve to prevent wear on the second bracket. A sleeve is fitted over the spring, located between the pad and the anti-wear sleeve. The initial state of the spring is determined by controlling the distance between the pad and the anti-wear sleeve. The sleeve also prevents the spring from bending and protects the spring.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bridge assembly with a self-tensioning conveyor chain, characterized in that, include: The assembly includes a housing, a drive shaft, a driven shaft, a chain rake assembly, and a self-tensioning mechanism. The drive shaft and the driven shaft are rotatably mounted in the housing. The chain rake assembly is mounted on the drive shaft and the driven shaft. The self-tensioning mechanism is mounted on the housing and connected to the driven shaft. The self-tensioning mechanism drives the driven shaft to move away from the drive shaft on the housing to tension the chain rake assembly.

2. The bridge assembly with a self-tensioning conveyor chain according to claim 1, characterized in that, The self-tensioning mechanism includes a sliding member and an elastic component. The driven shaft is disposed on the sliding member, the sliding member slides on the housing, and the two ends of the elastic component abut against the sliding member and the housing, respectively.

3. A bridge assembly with a self-tensioning conveyor chain according to claim 2, characterized in that, The housing is provided with a pad, and the sliding member is slidably supported on the upper surface of the pad.

4. A bridge assembly with a self-tensioning conveyor chain according to claim 3, characterized in that, The two ends of the driven shaft are respectively rotatably mounted on a mounting plate, the mounting plate is located inside the housing, and the two sides of the housing are respectively provided with elongated holes along the driven shaft away from the driving shaft; The sliding member is fixedly connected to the mounting plate by a connector, which passes through the elongated hole in the housing.

5. A bridge assembly with a self-tensioning conveyor chain according to claim 4, characterized in that, The sliding component includes a slider, an adjusting rod, and a pad. The slider is slidably connected to the pad and fixedly connected to the connecting member. One end of the adjusting rod is fixedly connected to the slider, and the other end is slidably mounted on the housing. The pad is sleeved on the adjusting rod, and the elastic component abuts against the pad and the housing.

6. A bridge assembly with a self-tensioning conveyor chain according to claim 5, characterized in that, A first bracket and a second bracket are fixedly provided on the housing; The pad and the slider are respectively located inside the first bracket. The pad is fixed to the lower side plate of the first bracket. The first bracket is provided with a bracket elongated hole corresponding to the elongated hole of the housing. The connector passes through the bracket elongated hole. The other end of the adjusting rod passes through and is slidably connected to the second bracket, and the two ends of the elastic member abut against the pad and the second bracket, respectively.

7. A bridge assembly with a self-tensioning conveyor chain according to claim 6, characterized in that, There are gaps between the connector and the walls of the elongated holes in the housing and the bracket, respectively.

8. A bridge assembly with a self-tensioning conveyor chain according to claim 6, characterized in that, The first bracket is a U-shaped bracket, and the slider and the pad are located inside the U-shaped bracket, with a gap between the slider and the base plate of the first bracket.

9. A bridge assembly with a self-tensioning conveyor chain according to claim 8, characterized in that, There is a gap between the slider and the upper side plate of the first bracket.

10. A bridge assembly with a self-tensioning conveyor chain according to claim 6, characterized in that, The position of the pad on the adjusting rod is adjustable, and the second bracket is provided with an anti-wear sleeve, in which the adjusting rod slides.

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