A rack for a brake adjusting arm

Abstract

The utility model relates to brake adjusting arm technical field discloses a rack for brake adjusting arm, including the gear body that follows rack rotation, the upper end of gear body is connected with the rack body for driving gear body rotation is engaged, one side of rack body is provided with the lubricating mechanism for linkage oil outlet and lubrication rack body and gear body meshing department, first, rack body and gear body meshing, can accurate realization brake adjusting arm's brake adjustment, satisfy truck brake adjustment core demand, then linkage lubricating mechanism, borrow rack movement linkage relevant components, cooperate lubrication passageway and send lubricating oil accurate to meshing department, reduce transmission wear, prolong component life, and sealing ring prevents lubricating oil leakage, symmetrical oil pipe makes lubrication even, guarantee lubrication effect and brake adjusting arm stable operation, promote truck brake system security and durability.

Description

Technical Field

[0001] This utility model relates to the field of brake adjusting arm technology, specifically to a rack for a brake adjusting arm. Background Technology

[0002] During vehicle operation, friction is generated between the brake pads and the brake drum to prevent the tires from rolling, thus achieving braking. After prolonged use, the brake pads wear out significantly, and the gap between the brake pads and the brake drum increases as the brake pads become thinner, affecting the safety of vehicle operation.

[0003] For example, Chinese patent CN218935105U discloses an automatic brake clearance adjusting arm for trucks, including a mounting base. A mounting plate is mounted on the top of the mounting base, a worm gear is mounted at the bottom inside the mounting base, and a worm is mounted in the middle of the top inside the mounting base. This automatic brake clearance adjusting arm for trucks is equipped with a worm, a rotating gear, a limiting rack, a worm wheel, and a connecting spring. The drive shaft drives the worm wheel to rotate. Based on the excess clearance recorded during braking, the worm wheel drives the worm to rotate through a certain angle, thus completing one adjustment. As the worm rotates, the rotating gear also rotates, simultaneously driving the limiting rack to move vertically at the front end of the rotating gear. When the worm rotates to the right, it stretches the connecting spring; when it rotates to the left, it releases the pressure of the connecting spring, thereby limiting the worm and preventing reverse rotation, thus solving the problem of insufficient stability.

[0004] However, during long-term, high-frequency meshing motion, the meshing transmission parts of gears and racks are prone to severe wear due to dry friction. This not only shortens the service life of the rack and gears but may also cause transmission jamming, affecting the accuracy and timeliness of clearance adjustment. Therefore, those skilled in the art provide a rack for a brake adjustment arm to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to provide a rack for a brake adjusting arm, which solves the problems mentioned in the background art of the prior art.

[0006] This utility model provides the following technical solution: a rack for a brake adjusting arm, including a gear body that rotates with the rack, the upper end of the gear body being meshed with a rack body for driving the gear body to rotate, and a lubrication mechanism for linking oil discharge and lubricating the meshing point of the rack body and the gear body being provided on one side of the rack body.

[0007] As a preferred embodiment of the above technical solution, the lubrication mechanism includes a telescopic rod, which is fixedly connected to the side of the rack body away from the gear. A cylinder is fixedly connected to the end of the telescopic rod away from the rack body, and a connecting rod is fixedly connected to the center and edge of the end of the cylinder near the rack body.

[0008] As a preferred embodiment of the above technical solution, a push plate is fixedly connected to the end of the connecting rod away from the cylinder, a piston is slidably connected to the outer surface of the push plate, a fixing post is fixedly connected to the outer surface of the piston near the rack body, and the piston is fixedly connected to the rack body through the fixing post.

[0009] As a preferred embodiment of the above technical solution, an oil inlet pipe is fixedly connected to the center of one end of the piston near the edge, and an oil pump is fixedly connected to the end of the oil inlet pipe away from the piston, and the oil pump is fixedly connected to the upper surface of the rack body.

[0010] As a preferred embodiment of the above technical solution, an oil outlet pipe is fixedly connected to the side of the piston that is away from the oil inlet pipe, and a sealing ring is fixedly connected to the outer surface of the oil outlet pipe that is away from the piston. The lower ends of the oil outlet pipe and the sealing ring are fixedly connected to an oil leakage groove opened in the inner cavity of the upper end of the rack body.

[0011] As a preferred embodiment of the above technical solution, the lower end of the oil leakage groove opened in the inner cavity of the rack body is fixedly connected to several sets of symmetrically arranged oil pipes, and the end of the oil pipe away from the oil leakage groove is sleeved through and connected to the meshing point of the rack body and the gear body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model incorporates a lubrication mechanism. Through the meshing of the rack body and the gear body, the brake adjustment arm can precisely achieve its brake adjustment function, meeting the core requirements of truck brake adjustment and ensuring the effectiveness of brake adjustment operations. Furthermore, the linkage lubrication mechanism, through the movement of the rack body linked to the telescopic rod, cylinder, connecting rod, push plate, piston, and other components, works in conjunction with the oil pump, inlet pipe, outlet pipe, sealing ring, oil drain groove, and lower oil pipe to form a complete lubrication path. This allows for precise and stable delivery of lubricating oil to the meshing point of the rack body and gear body, effectively reducing wear during transmission and extending component lifespan. Moreover, the sealing ring prevents lubricating oil leakage during delivery, ensuring stable lubrication. Simultaneously, the symmetrically distributed lower oil pipes ensure even coverage of the meshing area with lubricating oil, further enhancing lubrication reliability and ultimately guaranteeing the long-term stable operation of the brake adjustment arm. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a rack for a brake adjusting arm; Figure 2A schematic diagram showing the overall structure of a rack for a brake adjusting arm; Figure 3 A schematic diagram of the cylinder connection for the lubrication mechanism of a rack and pinion for a brake adjusting arm; Figure 4 This is a schematic diagram of the connecting rod connection of a lubrication mechanism for a rack and pinion brake adjusting arm.

[0014] In the diagram: 1. Gear body; 2. Rack body; 3. Lubrication mechanism; 31. Telescopic rod; 32. Cylinder; 33. Connecting rod; 34. Push plate; 35. Piston; 36. Fixed column; 37. Oil inlet pipe; 38. Oil pump; 39. Oil outlet pipe; 310. Sealing ring; 311. Lower oil pipe. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figures 1-4 As shown, this utility model provides a technical solution: a rack for a brake adjustment arm, including a gear body 1 that rotates with the rack, a rack body 2 for driving the gear body 1 to rotate at the upper end of the gear body 1, and a lubrication mechanism 3 for linking oil output and lubricating the meshing point of the rack body 2 and the gear body 1 on one side of the rack body 2.

[0017] In the scenario of adjusting truck brakes, when the brake adjusting arm operates using a rack, the rack body 2 moves when brake adjustment is required. Because it meshes with the upper end of the gear body 1, the movement of the rack body 2 directly drives the gear body 1 to rotate synchronously, thereby realizing the brake adjusting function of the brake adjusting arm. At the same time, during the movement of the rack body 2, the lubrication mechanism 3 on its side away from the gear will operate in conjunction with it. Specifically, the movement of the rack body 2 drives the piston 35 connected to it through the fixed column 36 to move. When the piston 35 moves, its surface... The sliding push plate 34, under the action of the connecting rod 33, will cooperate with the movement of the cylinder 32 and the telescopic rod 31. At this time, the oil pump 38 delivers lubricating oil to the piston 35 through the oil inlet pipe 37. The lubricating oil flows into the oil leakage groove in the inner cavity of the rack body 2 through the oil outlet pipe 39 at one end of the piston 35. Then, several sets of symmetrical lower oil pipes 311 at the lower end of the oil leakage groove accurately deliver the lubricating oil to the meshing point of the rack body 2 and the gear body 1, so as to realize real-time lubrication of the meshing part, reduce the wear during the transmission process, and ensure the smoothness of the brake adjustment operation.

[0018] As one implementation method in this embodiment, please refer to Figures 1-4As shown, the lubrication mechanism 3 includes a telescopic rod 31, which is fixedly connected to the side of the rack body 2 away from the gear. A cylinder 32 is fixedly connected to the end of the telescopic rod 31 away from the rack body 2. A connecting rod 33 is fixedly connected to the center of the end of the cylinder 32 near the rack body 2 and near the edge.

[0019] When the rack body 2 moves due to brake adjustment requirements, the telescopic rod 31 of the lubrication mechanism 3 is fixedly connected to the side of the rack body 2 away from the gear. The movement of the rack body 2 will directly drive the telescopic rod 31 to extend and retract synchronously. During the extension and retraction of the telescopic rod 31, it will trigger the cylinder 32 fixedly connected to the end away from the rack body 2. After the cylinder 32 is activated, the connecting rod 33 fixedly connected to the center and edge of the end of the rack body 2 will generate corresponding push and pull movements with the extension and retraction of the cylinder 32. This will provide a power foundation for the subsequent push plate 34 to push the piston 35 and realize the delivery of lubricating oil to lubricate the meshing part of the rack body 2 and the gear body 1, ensuring smooth transmission of the meshing part of the brake adjustment arm during the adjustment process and reducing component wear.

[0020] As one implementation method in this embodiment, please refer to Figures 3-4 As shown, a push plate 34 is fixedly connected to the end of the connecting rod 33 away from the cylinder 32. A piston 35 is slidably connected to the outer surface of the push plate 34. A fixing post 36 is fixedly connected to the outer surface of the piston 35 near the rack body 2, and the piston 35 is fixedly connected to the rack body 2 through the fixing post 36.

[0021] When the rack body 2 moves due to brake adjustment requirements, the piston 35 is fixedly connected to the rack body 2 via the fixed post 36, and the rack body 2 will drive the piston 35 to move synchronously. At the same time, when the cylinder 32 is activated, it will drive the connecting rod 33 fixed to it to move. The push plate 34 fixed at the end of the connecting rod 33 away from the cylinder 32 will move with the connecting rod 33 and slide on the inner surface of the piston 35. This sliding cooperation can adapt to the movement rhythm of the rack body 2 and the piston 35, and provide a stable motion basis for the subsequent pushing of lubricating oil in the piston 35. This ensures that the lubrication mechanism 3 can accurately deliver lubricating oil to the meshing point of the rack body 2 and the gear body 1, reducing the transmission wear between the two.

[0022] As one implementation method in this embodiment, please refer to Figures 3-4 As shown, an oil inlet pipe 37 is fixedly connected to the center of one end of the piston 35 near the edge, and an oil pump 38 is fixedly connected to the end of the oil inlet pipe 37 away from the piston 35. The oil pump 38 is fixedly connected to the upper surface of the rack body 2.

[0023] When the rack body 2 moves due to brake adjustment requirements, the piston 35, which is connected to the rack body 2 via the fixed post 36, moves synchronously with the rack body 2. At this time, the oil pump 38, which is fixed on the upper surface of the rack body 2, starts and, with the help of the oil inlet pipe 37, which is fixedly connected to the center near the edge of one end of the piston 35, steadily delivers lubricating oil into the piston 35. This provides an oil source guarantee for the subsequent precise delivery of lubricating oil to the meshing point between the rack body 2 and the gear body 1 through the oil outlet pipe 39, the oil leakage groove, and the lower oil pipe 311, thereby achieving lubrication of the meshing parts and reducing wear during the transmission process.

[0024] As one implementation method in this embodiment, please refer to Figures 3-4 As shown, an oil outlet pipe 39 is fixedly connected to the side of the piston 35 away from the oil inlet pipe 37. A sealing ring 310 is fixedly connected to the outer surface of the oil outlet pipe 39 away from the piston 35. The lower ends of the oil outlet pipe 39 and the sealing ring 310 are fixedly connected to the oil leakage groove opened in the upper inner cavity of the rack body 2.

[0025] When the oil pump 38 delivers lubricating oil to the piston 35 through the oil inlet pipe 37, the piston 35, which moves synchronously with the rack body 2, will exert a pushing force on the internal lubricating oil. At this time, the lubricating oil will flow to the oil outlet pipe 39, which is fixedly connected to the center of one end of the piston 35 away from the oil inlet pipe 37. Since a sealing ring 310 is fixed on the outer surface of the oil outlet pipe 39 away from the piston 35, the leakage of lubricating oil during the delivery process can be effectively prevented.

[0026] As one implementation method in this embodiment, please refer to Figures 3-4 As shown, the lower end of the oil leakage groove opened in the inner cavity of the rack body 2 is fixedly connected to several sets of symmetrically arranged oil pipes 311, and the end of the oil pipe 311 away from the oil leakage groove is sleeved through and connected to the meshing point of the rack body 2 and the gear body 1.

[0027] When the lubricating oil flows into the oil drain groove opened in the inner cavity of the rack body 2 through the oil outlet pipe 39, the oil drain groove will temporarily store and guide the lubricating oil. Since several sets of symmetrically arranged oil drain pipes 311 are fixedly connected to the lower end of the oil drain groove, and the end of the oil drain pipe 311 away from the oil drain groove is sleeved through the meshing part of the rack body 2 and the gear body 1, the lubricating oil temporarily stored in the oil drain groove will be accurately and evenly delivered to the meshing part of the rack body 2 and the gear body 1 through these symmetrically distributed oil drain pipes 311 under the action of its own gravity and the thrust of the continuously delivered lubricating oil, so as to achieve real-time lubrication of the meshing transmission part of the two.

[0028] Working principle: When brake adjustment is required, the rack body 2 moves, meshing with the upper end of the gear body 1, thereby driving the gear body 1 to rotate and realize the brake adjustment function of the brake adjustment arm. At the same time, the movement of the rack body 2 will activate the lubrication mechanism 3 on its side. On the one hand, the rack body 2 drives the piston 35 to move synchronously through the fixed column 36. On the other hand, the cylinder 32 drives the connecting rod 33 and the push plate 34 at the end of the connecting rod 33 to slide inside the piston 35. At this time, the oil pump 38 fixed on the upper surface of the rack body 2 delivers lubricating oil to the piston 35 through the oil inlet pipe 37. The lubricating oil flows into the oil leakage groove in the inner cavity of the rack body 2 through the oil outlet pipe 39 on the side of the piston 35 away from the oil inlet pipe 37. The oil leakage groove then delivers the lubricating oil precisely to the meshing point between the rack body 2 and the gear body 1 through several sets of symmetrically arranged lower oil pipes 311 at the lower end, realizing real-time lubrication of the meshing part, reducing transmission wear, and ensuring smooth brake adjustment.

[0029] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A rack for a brake adjusting arm, characterized in that: It includes a gear body (1) that rotates with the rack, and a rack body (2) that is meshed with the upper end of the gear body (1) for driving the gear body (1) to rotate. A lubrication mechanism (3) is provided on one side of the rack body (2) for linking oil output and lubricating the meshing point of the rack body (2) and the gear body (1). The lubrication mechanism (3) includes a telescopic rod (31), which is fixedly connected to the side of the rack body (2) away from the gear. A cylinder (32) is fixedly connected to the end of the telescopic rod (31) away from the rack body (2). A connecting rod (33) is fixedly connected to the center of the end of the cylinder (32) near the rack body (2) and close to the edge.

2. The rack for a brake adjusting arm according to claim 1, characterized in that: The connecting rod (33) is fixedly connected to a push plate (34) at the end away from the cylinder (32). A piston (35) is slidably connected to the outer surface of the push plate (34). A fixing post (36) is fixedly connected to the outer surface of the piston (35) near the rack body (2). The piston (35) is fixedly connected to the rack body (2) through the fixing post (36).

3. The rack for a brake adjusting arm according to claim 2, characterized in that: The piston (35) has an oil inlet pipe (37) fixedly connected to the center of one end near the edge. The oil pump (38) is fixedly connected to the end of the oil inlet pipe (37) away from the piston (35), and the oil pump (38) is fixedly connected to the upper surface of the rack body (2).

4. A rack for a brake adjusting arm according to claim 3, characterized in that: An oil outlet pipe (39) is fixedly connected to the side of the piston (35) away from the oil inlet pipe (37). A sealing ring (310) is fixedly connected to the outer surface of the oil outlet pipe (39) away from the piston (35). The lower ends of the oil outlet pipe (39) and the sealing ring (310) are fixedly connected to the oil leakage groove opened in the upper inner cavity of the rack body (2).

5. A rack for a brake adjusting arm according to claim 4, characterized in that: The lower end of the oil leakage groove opened in the inner cavity of the rack body (2) is fixedly connected to several sets of symmetrically arranged oil pipes (311), and the end of the oil pipe (311) away from the oil leakage groove is sleeved through the meshing point of the rack body (2) and the gear body (1).

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