Brake clearance manual adjusting arm device of circular tooth sheet structure

Abstract

The utility model relates to the technical field of adjusting arms, in particular to a brake clearance manual adjusting arm device of a circular tooth piece structure. According to the technical scheme, the adjusting arm comprises an adjusting arm body, a turbine is installed in an inner cavity of the adjusting arm body, and a worm matched with the turbine is arranged on the turbine; a ratchet wheel is arranged on the worm; a mounting frame is arranged on the side end face of the adjusting arm body, and an extrusion plate is mounted in the mounting frame through a connecting spring; a mounting rod is mounted on the ratchet wheel, and one end, deviating from the ratchet wheel, of the mounting rod is fixedly mounted on the adjusting arm body; a connecting frame is installed on the worm, a pawl is installed on the connecting frame through a pin shaft, and the pawl is limited through a ratchet wheel; and a bolt is mounted in the mounting frame through a thread, and is mounted on the adjusting arm body through a thread. The adjusting arm can be used, safety is prevented from being influenced by reverse rotation during use, and looseness is avoided by extrusion positioning during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of adjustment arm, concretely relates to a brake gap manual adjustment arm device of circular tooth piece structure. BACKGROUND

[0002] The brake gap automatic adjustment arm is a key component in the vehicle braking system and plays a vital role in ensuring driving safety. The device is also known as an automatic brake gap adjustment arm, and its core function is to compensate for the increased gap caused by brake friction plate wear in real time and accurately, ensuring that the brake gap always maintains within the design standard range, thereby effectively improving the stability and reliability of the braking system.

[0003] After searching, the patent application number CN207454618U discloses a portable adjustment arm, which has the advantages of convenient adjustment of the gap and automatic positioning, and enhances the practicability of the adjustment arm. However, during actual use, the worm part after rotation is prone to looseness under long-term operating conditions, which may cause reverse rotation. This not only seriously affects the adjustment accuracy of the automatic adjustment arm, but also may cause brake efficiency to decline, posing a potential threat to driving safety. To ensure normal operation of the equipment, professional personnel need to be arranged for regular maintenance and repair, which undoubtedly increases the use cost and maintenance workload. Therefore, in view of the above technical defects, it is urgent to optimize and improve the brake gap automatic adjustment arm to further improve its performance and reliability. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a brake gap manual adjustment arm device of circular tooth piece structure, which solves the problems raised in the background art.

[0005] The utility model solves the above technical problems by the following scheme:

[0006] A brake gap manual adjustment arm device of circular tooth piece structure, comprising an adjustment arm body, a turbine is installed in the inner cavity of the adjustment arm body, and a matching worm is arranged on the turbine;

[0007] A ratchet wheel is arranged on the worm;

[0008] A mounting bracket is arranged on the side end surface of the adjustment arm body, and a pressing plate is installed in the mounting bracket through a connecting spring.

[0009] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0010] Further, an installation rod is installed on the ratchet wheel, and one end of the installation rod away from the ratchet wheel is fixedly installed on the adjustment arm body.

[0011] The beneficial effects of the above further scheme are:

[0012] The mounting rod provides a support structure for the ratchet wheel, fixing the ratchet wheel on the adjusting arm body.

[0013] Further, a connecting frame is mounted on the worm, and a pawl is mounted on the connecting frame through a pin shaft, and the pawl is limited by the ratchet wheel.

[0014] The beneficial effects of the above further scheme are:

[0015] The mounting and cooperation of the connecting frame and the worm provide a movable mounting basis for the pawl, enabling the pawl to rotate around the pin shaft. When adjusting the brake clearance is needed, the worm is rotated, and the pawl swings with the rotation of the worm, and through the one-way meshing characteristics of the ratchet wheel, the rotation angle of the worm is accurately controlled. The limiting action of the ratchet wheel on the pawl ensures that the worm can only rotate in one direction to adjust the brake clearance, avoiding the reverse rotation of the worm due to misoperation or external force, thereby ensuring the accuracy and stability of the brake clearance adjustment. After the brake clearance adjustment is completed, the engagement state of the pawl and the ratchet wheel can effectively lock the position of the worm, preventing the worm from rotating by itself due to factors such as vibration and bumping during vehicle driving, ensuring that the brake clearance always remains at the set value, and improving the reliability and safety of the brake system.

[0016] Further, a bolt is mounted in the mounting frame through a thread, and the bolt is mounted on the adjusting arm body through a thread.

[0017] The beneficial effects of the above further scheme are:

[0018] Through the threaded connection of the bolt and the adjusting arm body, the detachable mounting of the mounting frame on the side end face of the adjusting arm body is realized. This mounting method facilitates the installation, disassembly and maintenance of the mounting frame, and when equipment maintenance or component replacement is needed, the mounting frame can be detached from the adjusting arm body, improving the maintenance efficiency.

[0019] Further, a rubber strip is mounted on the inner wall of the extrusion plate, and the extrusion plate extrudes and limits the worm through the rubber strip.

[0020] The beneficial effects of the above further scheme are:

[0021] The rubber strip has good elasticity and flexibility, and is installed in close contact with the inner wall of the extrusion plate, so that the extrusion plate can provide buffering and damping effects when limiting the worm. When the extrusion plate exerts pressure on the worm under the action of connecting springs, screw rods and other components, the rubber strip can closely fit the surface of the worm, ensuring effective limiting while avoiding direct rigid contact between metal components, reducing wear and noise caused by friction. In addition, the elastic properties of the rubber strip enable it to adaptively deform according to the actual shape and size of the worm, enhancing the limiting effect on the worm and ensuring that the worm does not rotate due to external forces such as vibration and impact during vehicle operation after the brake clearance adjustment is completed, effectively maintaining the stability of the brake clearance and improving the reliability and service life of the brake system. At the same time, the rubber strip also has certain anti-skid performance, which can further enhance the fixing effect on the worm and prevent the worm from slipping during operation.

[0022] Further, a screw rod is installed in the mounting frame through a thread, and the screw rod limits the extrusion plate.

[0023] The beneficial effects of the above further scheme are:

[0024] The threaded connection of the screw rod and the mounting frame provides an adjustable extrusion limiting method for the extrusion plate. By rotating the screw rod, the extrusion force of the extrusion plate on the worm can be accurately controlled. During brake clearance adjustment, according to the actual required brake clearance size, the screw rod is tightened to increase the pressure of the extrusion plate on the worm, thereby enhancing the limiting effect on the worm and ensuring that the worm can be stably maintained at the corresponding position after adjustment. Conversely, loosening the screw rod can reduce the pressure of the extrusion plate on the worm, facilitating re-adjustment of the worm. At the same time, after the screw rod extrudes the extrusion plate, the extrusion plate is stretched by the connecting spring, and the stretched connecting spring has a restoring force that pulls the extrusion plate. When the extrusion plate is pulled, it extrudes the extrusion plate in the opposite direction, effectively preventing the screw rod from rotating on its own after the position and pressure of the extrusion plate are adjusted, ensuring that the extrusion limiting force of the extrusion plate on the worm remains stable, and ensuring safe and reliable operation of the brake system.

[0025] Further, a limiting rod is welded on the extrusion plate, and the limiting rod is slidably sleeved in the mounting frame.

[0026] The beneficial effects of the above further scheme are:

[0027] The sliding sleeve cooperation of the limiting rod and the mounting frame provides precise guidance and limiting effect for the movement of the extrusion plate. When the extrusion plate moves under the action of the screw rod, the limiting rod can ensure that the extrusion plate slides smoothly in a fixed direction, avoiding tilting and deviation of the extrusion plate.

[0028] The utility model provides a kind of brake clearance manual adjustment arm device of circular tooth piece structure. With following beneficial effects:

[0029] The cooperation of connecting frame and worm provides a movable basis for pawl, and the one-way meshing characteristic of pawl and ratchet wheel can accurately control the rotation angle of worm, ensuring the accuracy of brake clearance adjustment.

[0030] The threaded connection of screw rod and mounting frame can accurately control the extrusion force of extrusion plate on worm by rotating screw rod, so as to accurately adjust the position of worm according to the actual required brake clearance size, achieving the purpose of accurately adjusting brake clearance.

[0031] The limiting effect of ratchet wheel on pawl ensures that worm can only rotate in one direction to adjust brake clearance, avoiding reverse rotation of worm due to misoperation or external force. After the completion of brake clearance adjustment, the meshing state of pawl and ratchet wheel can effectively lock the position of worm, preventing it from rotating by itself due to factors such as vibration during vehicle driving, ensuring that brake clearance always remains at the set value and improving the reliability and safety of brake system.

[0032] The rubber strip has elasticity and flexibility, providing cushioning and shock-absorbing effect when the extrusion plate extrudes and limits worm, avoiding direct rigid contact between metal parts and reducing wear and noise. At the same time, its elastic properties enable it to adapt to the shape and size of worm, enhancing the limiting effect, preventing worm from rotating due to external force, maintaining the stability of brake clearance and improving the reliability and service life of brake system. In addition, the anti-slip performance of rubber strip further enhances the fixing effect on worm, preventing skidding and ensuring the safety of brake system.

[0033] After the screw rod extrudes the extrusion plate, the restoring force of connecting spring will pull the extrusion plate, reversely extruding the screw rod to prevent it from rotating by itself, ensuring that the extrusion limiting force of extrusion plate on worm remains stable and ensuring the safe and reliable operation of brake system. BRIEF DESCRIPTION OF DRAWINGS

[0034] The drawings described herein are used to provide further understanding of the utility model and form part of this application. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute undue limitation on the utility model.

[0035] In the drawings:

[0036] Figure 1 It is the front view schematic diagram of the utility model;

[0037] Figure 2 It is the utility model Figure 1 A is the enlarged schematic diagram of the utility model;

[0038] Figure 3The utility model discloses a pawl installation schematic drawing.

[0039] Figure 4 The utility model discloses a mounting rack installation schematic drawing.

[0040] Figure 5 The utility model discloses an extrusion plate installation schematic drawing.

[0041] In the drawings, the component list represented by each sign is as follows:

[0042] 1, adjustment arm body, 101, turbine, 102, worm, 103, ratchet, 104, mounting rod, 105, pawl, 106, connecting frame, 2, mounting rack, 201, bolt, 202, screw rod, 203, limiting rod, 204, connecting spring, 205, extrusion plate, 206, rubber strip. DETAILED DESCRIPTION

[0043] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0044] Please refer to Figures 1 to 3 The embodiments provided by the utility model:

[0045] Embodiment one

[0046] A brake clearance manual adjustment arm device of circular tooth piece structure, including adjustment arm body 1, the cavity of adjustment arm body 1 is installed with turbine 101, and turbine 101 is provided with matched worm 102;

[0047] Worm 102 is provided with ratchet 103;

[0048] The side end surface of adjustment arm body 1 is equipped with mounting rack 2, and extrusion plate 205 is installed in mounting rack 2 through connecting spring 204;

[0049] Ratchet 103 is installed with mounting rod 104, and the end of mounting rod 104 away from ratchet 103 is fixedly installed on adjustment arm body 1, and mounting rod 104 provides support structure for ratchet 103, and ratchet 103 is fixed on adjustment arm body 1;

[0050] The worm 102 is provided with a connecting frame 106, the connecting frame 106 is provided with a pawl 105 through a pin shaft, the pawl 105 is limited by the ratchet wheel 103, the connecting frame 106 is mounted with the worm 102, and the mounting cooperation provides a movable mounting basis for the pawl 105, so that the pawl 105 can rotate around the pin shaft. When it is necessary to adjust the brake clearance, the worm 102 is rotated, the pawl 105 swings along with the rotation of the worm 102, and the accurate control of the rotation angle of the worm 102 is realized through the one-way meshing characteristics of the ratchet wheel 103. The limiting effect of the ratchet wheel 103 on the pawl 105 ensures that the worm 102 can only rotate in one direction to adjust the brake clearance, avoids the reverse rotation of the worm 102 due to misoperation or external force, and ensures the accuracy and stability of the brake clearance adjustment. After the brake clearance adjustment is completed, the meshing state of the pawl 105 and the ratchet wheel 103 can effectively lock the position of the worm 102, prevent the worm 102 from rotating by itself due to factors such as vibration and bumping during vehicle driving, ensure that the brake clearance always maintains at the set value, and improve the reliability and safety of the brake system.

[0051] Example two

[0052] In order to limit the extrusion, avoid loosening after long-term use, and cause safety hidden danger, for example, as shown in Figures 1 to 5 The utility model also includes:

[0053] The mounting frame 2 is provided with a bolt 201 through a threaded connection, the bolt 201 is arranged on the adjusting arm body 1 through a threaded connection, and the threaded connection between the bolt 201 and the adjusting arm body 1 achieves detachable mounting of the mounting frame 2 on the side end surface of the adjusting arm body 1. The mounting mode facilitates mounting, dismounting and maintenance of the mounting frame 2, and when equipment is overhauled or parts are replaced, the mounting frame 2 can be dismounted from the adjusting arm body 1, thereby improving maintenance efficiency.

[0054] The inner wall of the extrusion plate 205 is attached with a rubber strip 206. The extrusion plate 205 extrudes and limits the worm 102 through the rubber strip 206. The rubber strip 206 has good elasticity and flexibility. It is attached with the inner wall of the extrusion plate 205, so that the extrusion plate 205 can provide buffering and damping effects when extruding and limiting the worm 102. When the extrusion plate 205 applies pressure to the worm 102 under the action of the connecting spring 204, the screw rod 202 and other components, the rubber strip 206 can tightly fit the surface of the worm 102, avoiding direct rigid contact between metal components and reducing wear and noise caused by friction. In addition, the elastic properties of the rubber strip 206 enable it to adaptively deform according to the actual shape and size of the worm 102, enhancing the limiting effect on the worm 102 and ensuring that the worm 102 will not rotate due to external forces such as vibration and impact during vehicle driving after the brake clearance adjustment is completed, effectively maintaining the stability of the brake clearance and improving the reliability and service life of the brake system. At the same time, the rubber strip 206 also has certain anti-skid performance, which can further enhance the fixing effect on the worm 102 and prevent the worm 102 from slipping during work;

[0055] The screw rod 202 is screwed into the mounting bracket 2. The screw rod 202 extrudes and limits the extrusion plate 205. The threaded connection of the screw rod 202 and the mounting bracket 2 provides an adjustable extrusion limiting method for the extrusion plate 205. By rotating the screw rod 202, the extrusion force of the extrusion plate 205 on the worm 102 can be accurately controlled. During brake clearance adjustment, according to the actual required brake clearance size, the screw rod 202 is tightened to increase the pressure of the extrusion plate 205 on the worm 102, thereby enhancing the limiting effect on the worm 102 and ensuring that the worm 102 can be stably maintained at the corresponding position after adjustment. Conversely, loosening the screw rod 202 can reduce the pressure of the extrusion plate 205 on the worm 102, facilitating the re-adjustment of the worm 102. At the same time, after the screw rod 202 extrudes the extrusion plate 205, the extrusion plate 205 is stretched by the connecting spring 204. The stretched connecting spring 204 has a restoring force that pulls the extrusion plate 205. When the extrusion plate 205 is pulled, it extrudes the extrusion plate 205 in the opposite direction. After adjusting the position and pressure of the extrusion plate 205, the screw rod 202 can be effectively prevented from rotating, ensuring that the extrusion limiting force of the extrusion plate 205 on the worm 102 remains stable and ensuring the safe and reliable operation of the brake system;

[0056] The limiting rod 203 is welded on the extrusion plate 205, and is sleeved in the mounting frame 2, and the limiting rod 203 is matched with the mounting frame 2 in a sleeving manner, so that accurate guidance and limiting effects are provided for the movement of the extrusion plate 205. When the extrusion plate 205 is moved under the action of the screw rod 202, the limiting rod 203 can ensure that the extrusion plate 205 stably slides in a fixed direction, and inclination and deviation of the extrusion plate 205 are avoided.

[0057] Working principle:

[0058] The connecting frame 106 is installed on the worm 102, the pawl 105 is installed on the connecting frame 106 through a pin shaft, and the pawl 105 is limited through the ratchet wheel 103. When the brake gap needs to be adjusted, the worm 102 is rotated, the pawl 105 swings along with the rotation of the worm 102, the one-way meshing characteristics of the ratchet wheel 103 are utilized, the rotation angle of the worm 102 is accurately controlled, it is ensured that the worm 102 can only rotate in one direction to adjust the brake gap, and reverse rotation of the worm 102 due to misoperation or external force is avoided. After the brake gap adjustment is completed, the meshing state of the pawl 105 and the ratchet wheel 103 can effectively lock the position of the worm 102, and the worm 102 is prevented from rotating due to factors such as vibration and bumping in vehicle driving.

[0059] The screw rod 202 is installed in the mounting frame 2 in a threaded manner, and the screw rod 202 limits the extrusion of the extrusion plate 205. By rotating the screw rod 202, the extrusion force of the extrusion plate 205 on the worm 102 can be accurately controlled. During the brake gap adjustment process, according to the actual required brake gap size, the screw rod 202 is tightened to increase the pressure of the extrusion plate 205 on the worm 102, and the limiting effect on the worm 102 is enhanced; the screw rod 202 is loosened to reduce the pressure, and the worm 102 is conveniently re-adjusted. At the same time, after the screw rod 202 extrudes the extrusion plate 205, the extrusion plate 205 is stressed and elongated, the elongated connecting spring 204 has a reset force and pulls the extrusion plate 205, so that after the position and pressure of the extrusion plate 205 are adjusted, the screw rod 202 is effectively prevented from rotating, and the extrusion limiting force of the extrusion plate 205 on the worm 102 is kept stable.

[0060] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0061] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A brake clearance manual adjustment arm device of a circular toothed plate structure, comprising an adjustment arm body (1), a turbine (101) is installed in the inner cavity of the adjustment arm body (1), and a matched worm (102) is arranged on the turbine (101), characterized in that: a ratchet wheel (103) is arranged on the worm (102); an installation frame (2) is arranged on the side end face of the adjustment arm body (1), and a pressing plate (205) is installed in the installation frame (2) through a connecting spring (204).

2. A brake lash manual adjustment arm device of a circular segment structure according to claim 1, characterized in that: An installation rod (104) is installed on the ratchet wheel (103), and one end of the installation rod (104) away from the ratchet wheel (103) is fixedly installed on the adjustment arm body (1).

3. A brake lash manual adjustment arm device of a circular segment structure according to claim 1, characterized in that: A connecting frame (106) is installed on the worm (102), a pawl (105) is installed on the connecting frame (106) through a pin shaft, and the pawl (105) is limited by the ratchet wheel (103).

4. A brake lash manual adjustment arm device of a circular segment structure according to claim 1, characterized in that: A bolt (201) is installed in the installation frame (2) through a thread, and the bolt (201) is installed on the adjustment arm body (1) through a thread.

5. The brake lash manual adjustment arm device of claim 1 wherein: A rubber strip (206) is attached to the inner wall of the pressing plate (205), and the worm (102) is extruded and limited by the rubber strip (206).

6. A brake lash manual adjustment arm device of a circular segment structure according to claim 1, characterized in that: A screw rod (202) is installed in the installation frame (2) through a thread, and the screw rod (202) extrudes and limits the pressing plate (205).

7. A brake lash manual adjustment arm device for a circular segment structure as defined in claim 6, wherein: A limiting rod (203) is welded on the pressing plate (205), and the limiting rod (203) is slidingly sleeved in the installation frame (2).

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