Brake for high-speed shaft of mine truck

Abstract

The invention relates to a brake for a mine truck high-speed shaft, and belongs to the field of automobile brakes, the brake comprises a fixed base and a driving piston, a driving groove is formed in the fixed base, the driving piston is located in the driving groove to slide, and a middle shaft rod is fixedly connected to the position, at the groove bottom of the driving groove, of the fixed base; a containing groove is formed in the side, facing the groove bottom of the driving groove, of the driving piston, one end of the middle shaft rod extends into the containing groove, the middle shaft rod is sleeved with a compensation clamping ring, the compensation clamping ring is coaxially connected with a reset spring, and the end, away from the compensation clamping ring, of the reset spring transmits thrust towards the groove bottom of the driving groove to the driving piston. When the compensation clamping ring is arranged on the middle shaft rod in a sleeving mode, the compensation clamping ring elastically deforms. According to the scheme, the displacement process of the compensation clamping ring is smoother when the compensation clamping ring bears the abutting action force, and the braking effect is more durable.

Description

Technical Field

[0001] The present application relates to the field of automobile brakes, and in particular to a brake for a high-speed shaft of a mining truck. Background Art

[0002] Brake is a device that has the function of slowing down, stopping or keeping a moving part (or moving machinery) stopped. It is a mechanical part that stops or slows down the moving parts in the machinery. Commonly known as brakes or gates.

[0003] In vehicle design, the installation position of the brake is crucial, especially when choosing the high-speed shaft as the installation point. From the perspective of braking performance, the high-speed shaft can respond to braking commands more quickly and accurately due to its fast rotation speed, thereby achieving efficient operation of the hydraulic braking system, thereby ensuring that the vehicle can quickly decelerate or stop in an emergency.

[0004] In the related art, the brake includes a fixed base, an oil pressure control system, a driving piston, a return spring and a friction plate. The fixed base is installed on the chassis of the vehicle. The friction plate is slidably set on the fixed base and is located next to the wheel brake disc. The driving piston is also slidably set on the fixed base. The oil pressure control system and the return spring are used to drive the driving piston to move. The oil pressure is increased to make the driving piston move closer to the brake disc. After the oil pressure is removed, the return spring applies a pulling force to the driving piston to reset it. When the friction plate moves to abut against the brake disc, the friction force generated by the two acts as the rotation resistance of the wheel, thereby achieving the purpose of braking. Since the brake disc of the high-speed shaft rotates at a high speed, the friction plate is continuously damaged by friction during the process of contact between the friction plate and the friction plate, and the thickness gradually decreases. With long-term use, the required propulsion distance of the driving piston becomes longer, and the required oil pressure and the telescopic stroke of the return spring are increased, which makes the overall operation mechanism of the equipment more laborious.

[0005] In this regard, a central shaft is fixedly arranged on a fixed base, the central shaft is coaxial with the driving piston, a receiving chamber is provided on the driving piston, a reset spring is located in the receiving chamber, one end of the reset spring is connected to the wall of the receiving chamber, and the other end is connected to a compensating snap ring, which is sleeved on the central shaft through an interference fit. Under normal conditions, when the friction plate and the brake disc are in contact, the wall of the receiving chamber away from the friction plate does not directly or indirectly contact the compensating snap ring. However, after the thickness of the friction plate is reduced, the stroke of the driving piston gradually increases. When the wall of the receiving chamber away from the friction plate directly or indirectly abuts against the compensating snap ring, the driving piston driven by the oil pressure can apply a thrust to the compensating snap ring. When the thrust is greater than the static friction between the compensating snap ring and the central shaft, the compensating snap ring is pushed and moves closer to the friction plate, and the telescopic stroke of the reset spring is reduced. The above-mentioned "self-adjusting" mechanism has the following problems: the compensating snap ring and the central shaft are interference fit. In addition to the material properties, the maximum static friction between the two places high requirements on their size and fit accuracy, and it is easy to have a situation where the fit is too tight and the reaction is slow during use. Summary of the invention

[0006] In order to improve the above problems, the present application provides a brake for a high-speed shaft of a mining truck.

[0007] The present application provides a brake for a high-speed shaft of a mining truck using the following technical solution: A brake for a high-speed shaft of a mining truck comprises a fixed base and a driving piston, wherein the fixed base is provided with a driving groove, the driving piston is located in the driving groove and slides, a central axis rod is fixedly connected to the bottom of the driving groove on the fixed base, a receiving groove is provided on the side of the driving piston facing the bottom of the driving groove, one end of the central axis rod extends into the receiving groove, a compensation snap ring is sleeved on the central axis rod, a return spring is coaxially connected to the compensation snap ring, the end of the return spring away from the compensation snap ring transmits a thrust toward the bottom of the driving groove to the driving piston, an adjustment notch is provided on the compensation snap ring, and when the compensation snap ring is sleeved on the central axis rod, the compensation snap ring undergoes elastic deformation.

[0008] By adopting the above technical solution, the compensating clamping ring clamps the central axis rod through its own elastic deformation, thereby generating static friction between the two that can keep them relatively fixed. The size adjustability during assembly is high and the operation is relatively simple. During use, the mutual clamping state between the compensating clamping ring and the central axis rod is also more stable.

[0009] Preferably, a transition shell is provided outside the compensation snap ring, and the distance between two opposite end walls of the inner cavity of the transition shell is greater than the thickness of the compensation snap ring. One end of the return spring is fixedly connected to the transition shell, and a retaining ring piece is detachably connected to the driving piston at the notch of the accommodating groove. An abutment ring piece is fixedly connected to the end of the return spring away from the transition shell, and the abutment ring piece abuts against the retaining ring piece.

[0010] By adopting the above technical solution, the transition shell and the compensation clamping ring are jointly sleeved outside the central shaft rod, thereby serving as an intermediate body for connecting the compensation clamping ring to the reset spring. The retaining ring sheet closes the notch of the accommodating groove, so that when the driving piston moves, the retaining ring sheet can apply thrust to the reset spring.

[0011] Preferably, the side wall of the retaining ring is formed with an external thread structure, the retaining ring and the driving piston are coaxially threadedly connected, a stop spring is clamped on the retaining ring, a retaining groove is provided on the retaining ring, a stop groove is provided on the groove wall of the accommodating groove, the stop groove and the retaining groove are aligned and connected, and the stop spring passes through the retaining groove and the stop groove at the same time.

[0012] By adopting the above technical solution, under the blocking action of the anti-rotation retaining spring, the blocking ring piece cannot easily rotate relative to the driving piston, and the relative stability of the two is improved.

[0013] Preferably, a top support member is slidably provided on the inner edge of the compensation clamp, and the sliding direction of the top support member relative to the compensation clamp is radial to the center axis rod. When the top support member moves close to the center axis rod, it abuts against the side wall of the center axis rod and applies a reaction force to the compensation clamp away from the center axis rod. A control mechanism is also provided on the compensation clamp, and the control mechanism is used to control the sliding of the top support member.

[0014] By adopting the above technical solution, when a thrust is applied to the compensation clamp, the top support member moves close to the central axis rod, the top support member and the central axis rod abut against each other, and the compensation clamp expands and deforms due to the force from the top support member, thereby reducing the friction between it and the central axis rod, which is conducive to the smooth displacement of the compensation clamp.

[0015] Preferably, the control mechanism includes a force-bearing rod, an initial position spring and a reversing assembly. The force-bearing rod is slidably connected to the compensation snap ring, and the sliding direction is parallel to the axis of the compensation snap ring. One end of the force-bearing rod passes through the transition shell and faces the abutment ring. When the abutment ring and the force-bearing rod abut, the reversing assembly is used to vertically decompose the thrust from the abutment ring to the force-bearing rod, and the decomposed force is applied to the top support member. One end of the initial position spring is connected to the compensation snap ring, and the other end is connected to the force-bearing rod. In a natural state, the initial position spring applies a thrust toward the abutment ring to the force-bearing rod.

[0016] Preferably, the reversing assembly includes a reversing rod and a thrust wedge, the thrust wedge and the force-bearing rod are fixedly connected, the reversing rod and the compensation ring are slidably connected, and the sliding direction is the radial direction of the compensation ring. One end of the reversing rod is connected to the top support member, and the other end is fixedly connected to the reversing wedge, and the wedge surface of the reversing wedge abuts against the wedge surface of the thrust wedge.

[0017] By adopting the above technical solution, when the abutting ring piece abuts against the force-receiving rod, the force-receiving rod is subjected to thrust, and the reversing assembly transmits the thrust to the top support member, thereby enabling the top support member to move closer to the central axis rod.

[0018] Preferably, an abutment ball is embedded in one end of the force-bearing rod facing the abutment ring piece, and the abutment ball is used for rolling contact with the abutment ring piece.

[0019] By adopting the above technical solution, when the compensating snap ring expands and deforms, the radial position of the force-bearing rod in the compensating snap ring changes, and the abutting balls reduce the movement resistance of the force-bearing rod and the abutting ring piece.

[0020] Preferably, the top support member includes a mounting block and a matching wheel, the mounting block is fixedly connected to the reversing rod, the matching wheel is rotatably connected to the mounting block, the rotation axis is perpendicular to the axis of the central axis, and the wheel surface of the matching wheel is in contact with the side wall of the central axis.

[0021] By adopting the above technical solution, when the top support member abuts against the middle shaft rod, the matching wheel and the middle shaft rod are in direct contact, that is, the top support member and the middle shaft rod are in rolling abutment, the friction between the two is small, and the movement of the compensation clamp ring will be smoother.

[0022] Preferably, the top support member is a contact rod, one end of the contact rod is hinged to the force-bearing rod, the hinge axis is perpendicular to the axis of the central axis, and the other end is in contact with the side wall of the central axis. An adjustment space is provided on the compensating clamping ring and on the side of the contact rod facing the abutting ring sheet, and the adjustment space is for the contact rod to swing into.

[0023] Preferably, a support spring is fixedly connected on the compensation clamp ring and in the adjustment space, the support spring abuts against a side of the contact rod facing the adjustment space, and the support spring always applies a thrust to the contact rod.

[0024] By adopting the above technical solution, the abutment ring applies thrust to the compensation clamping ring through the force-bearing rod, and the compensation clamping ring expands and deforms at the same time. If the contact rod overcomes the thrust of the supporting spring, the contact rod can swing relatively to the adjustment space. At this time, the contact rod and the compensation clamping ring undergo relative axial movement, that is, the compensation clamping ring shifts smoothly.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By adjusting the setting of the notch, the compensating clamping ring holds the central axis rod tightly through its own elastic deformation, so that static friction that can keep them relatively fixed is generated between the two. The size is highly adjustable during assembly and the operation is relatively simple. During use, the mutual clamping state between the compensating clamping ring and the central axis rod is also more stable; 2. Through the arrangement of the top support member and the control mechanism, when the abutment ring is pushed close to the compensation clamping ring by the oil pressure, the control mechanism makes the top support member close to the center axis rod and abut against it. After the compensation clamping ring is subjected to the reaction force from the top support member, it has a tendency to expand, and the clamping effect on the center axis rod is weakened, making it easier to transition from the clamping static state to the sliding state, thereby improving the stability of the compensation clamping ring when it is adjusted and moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the brake for the high-speed shaft of a mining truck in the first embodiment of the present application.

[0027] Figure 2 It is a cross-sectional schematic diagram used to illustrate the internal structure of the containing tank in the first embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the connection structure between the driving piston and the retaining ring in the first embodiment of the present application.

[0029] Figure 4 It is a schematic diagram used to illustrate the distribution position of the force-bearing rod on the compensation clamp ring in Examples 2 and 3 of the present application.

[0030] Figure 5 It is a structural diagram used to reflect the control mechanism in Example 2 of the present application.

[0031] Figure 6 It is a structural diagram used to reflect the control mechanism in Example 3 of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Fixed base; 11. Driving groove; 12. Central axis rod; 13. Driving piston; 131. Accommodating groove; 132. Anti-rotation groove; 133. Positioning ring; 134. Mounting groove; 135. Anti-rotation retaining spring; 2. Compensating retaining ring; 21. Adjusting notch; 22. Adjusting space; 23. Transition shell; 24. Reset spring; 241. Abutting ring; 3. Support member; 31. Mounting block; 32. Matching wheel; 33. Contact rod; 4. Control mechanism; 41. Force rod; 411. Abutting ball; 42. Initial spring; 43. Reversing assembly; 431. Reversing rod; 432. Pushing wedge; 433. Reversing wedge; 44. Support spring; 5. Friction plate. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] Embodiment 1: The present application embodiment discloses a brake for a high-speed shaft of a mining truck, such as Figure 1 and 2As shown, it comprises a fixed base 1 and a driving piston 13. A driving groove 11 is provided on the fixed base 1. The driving piston 13 slides in the driving groove 11. A hydraulic system for hydraulically controlling the movement of the driving piston 13 is provided on the fixed base 1. The brake disc of the high-speed shaft is located in the middle of the fixed base 1 (not shown in the figure). A friction plate 5 is provided on the side of the driving piston 13 facing the brake disc. A total of four driving pistons 13 are evenly distributed on opposite sides of the brake disc.

[0035] like Figure 1 and 2 As shown, a central axis rod 12 is fixedly connected to the bottom of the driving groove 11 on the fixed base 1, the number of central axis rods 12 and driving pistons 13 is the same and the two correspond one to one, the driving piston 13 is provided with a receiving groove 131 on the side facing the bottom of the driving groove 11, one end of the central axis rod 12 extends into the receiving groove 131, a compensation snap ring 2 is sleeved on the central axis rod 12, and a transition shell 23 is provided on the outer cover of the compensation snap ring 2, so the transition shell 23 is also sleeved outside the central axis rod 12. An adjustment notch 21 is provided on the compensation snap ring 2, so that the shape characteristics of the compensation snap ring 2 are similar to those of a retaining spring. When the compensation snap ring 2 is sleeved on the central axis rod 12, the compensation snap ring 2 is elastically deformed and holds the central axis rod 12 tightly, and there is a large static friction between its inner edge and the side wall of the central axis rod 12. There are two compensation snap rings 2, and the two compensation snap rings 2 are tightly attached to each other. The distance between the two opposite end walls of the inner cavity of the transition shell 23 is greater than the sum of the thicknesses of the two compensation snap rings 2, that is, the transition shell 23 can perform a small amount of axial movement relative to the compensation snap ring 2. A return spring 24 is coaxially arranged outside the transition shell 23, one end of the return spring 24 is fixedly connected to the transition shell 23, and an abutment ring piece 241 is fixedly connected to the end of the return spring 24 away from the transition shell 23, and the abutment ring piece 241 is located at the end of the return spring 24 away from the friction plate 5.

[0036] like Figure 2 and 3 As shown, a retaining ring piece 133 is detachably connected to the driving piston 13 at the notch of the accommodating groove 131 . When the driving piston 13 moves close to the brake disc, the abutting ring piece 241 can abut against the retaining ring piece 133 . In this embodiment, the side wall of the retaining ring 133 is formed with an external thread structure, the retaining ring 133 and the driving piston 13 are coaxially threadedly connected, a stop spring 135 is clamped on the retaining ring 133, a retaining groove 134 is provided on the retaining ring 133, the length direction of the retaining groove 134 is the radial direction of the retaining ring 133, a stop groove 132 is provided on the groove wall of the accommodating groove 131, and the length direction of the stop groove 132 is parallel to the axis of the retaining ring 133; the stop groove 132 and the retaining groove are aligned and connected, and the stop spring 135 passes through the retaining groove 134 and the stop groove 132 at the same time, thereby, the retaining ring 133 cannot easily rotate relative to the driving piston 13, and the relative stability of the two is improved.

[0037] The implementation principle of a brake for a high-speed shaft of a mining truck in the embodiment of the present application is as follows: When braking, the oil pressure in the driving groove 11 increases, the driving piston 13 is pushed and the friction disc is moved closer to the brake disc, the return spring 24 is compressed, and the compensation snap ring 2 maintains a stable position through the static friction between itself and the central shaft 12. After the brake is released, the oil pressure drops, and the hydraulic action and the elastic force of the return spring 24 return the driving piston 13 to its original position. As the brake disc gradually wears, the required moving distance of the driving piston 13 for effective braking increases, that is, the travel of the driving piston 13 under the action of oil pressure increases. When the abutting ring 241 abuts the outer end surface of the transition shell 23, the thrust of the oil pressure on the driving piston 13 is finally transmitted to the compensation snap ring 2. The thrust exerted on the compensation snap ring 2 gradually increases until it is greater than the maximum static friction between it and the central shaft 12. The compensation snap ring 2 moves toward the side close to the friction plate 5 to a new position closer to the friction plate 5. Since the new position of the compensation snap ring 2 drives the connection point of the return spring 24 and the transition shell 23 to move together, the deformation of the return spring 24 will not increase excessively when the driving piston 13 moves for braking, and the energy consumption demand of the oil pressure system will not increase excessively.

[0038] Embodiment 2: like Figure 4 and 5 As shown, the difference from Example 1 is that in this embodiment, the number of compensating clamps 2 on a single central axis 12 is one, and a top support member 3 is slidably provided on the inner edge of the compensating clamp 2. The sliding direction of the top support member 3 relative to the compensating clamp 2 is the radial direction of the central axis 12. A control mechanism 4 is also provided on the compensating clamp 2, and the control mechanism 4 is used to control the sliding of the top support member 3; when the top support member 3 approaches the side wall of the central axis 12 and abuts against it, the top support member 3 applies a reaction force to the compensating clamp 2 away from the central axis 12, thereby making the compensating clamp 2 have a deformation tendency of expanding and becoming larger.

[0039] like Figure 4 and 5As shown, the control mechanism 4 includes a force-bearing rod 41, an initial position spring 42 and a reversing assembly 43. The force-bearing rod 41 is slidably connected to the compensation snap ring 2, and the sliding direction is parallel to the axis of the compensation snap ring 2. One end of the force-bearing rod 41 passes through the transition shell 23 and faces the abutment ring piece 241; an abutment ball 411 is embedded in the end of the force-bearing rod 41 facing the abutment ring piece 241. When the abutment ring piece 241 moves to abut against the force-bearing rod 41, the abutment ball 411 is used for rolling contact with the abutment ring piece 241. The direction of the abutment force from the abutment ring piece 241 received by the force-bearing rod 41 is parallel to the axial direction of the compensation snap ring 2. The reversing assembly 43 is used to vertically decompose the thrust from the abutment ring piece 241 received by the force-bearing rod 41, and the decomposed force component acts on the top support member 3. One end of the initial position spring 42 is connected to the compensation snap ring 2, and the other end is connected to the force rod 41. In the natural state, the initial position spring 42 applies a thrust to the force rod 41 toward the abutment ring 241, so that the force rod 41 does not generate a thrust force on the supporting member 3. There are four force rods 41 on the compensation snap ring 2, and the positions of the four force rods 41 are distributed along the circumferential array of the compensation snap ring 2.

[0040] like Figure 5 As shown, the reversing assembly 43 includes a reversing rod 431 and a pushing wedge 432, the pushing wedge 432 and the force rod 41 are fixedly connected, the reversing rod 431 and the compensation snap ring 2 are slidably connected, and the sliding direction is the radial direction of the compensation snap ring 2, one end of the reversing rod 431 is connected to the top support member 3, and the other end is fixedly connected with the reversing wedge 433. When the wedge surface of the reversing wedge 433 and the wedge surface of the pushing wedge 432 abut, the reversing rod 431 and the top support member 3 are pushed toward the center axis rod 12 and move, and the force rod 41 is pushed away from the center axis rod 12 and the thrust is finally transmitted to the compensation snap ring 2.

[0041] like Figure 5 As shown, in this embodiment, the top support member 3 includes a mounting block 31 and a mating wheel 32. The mounting block 31 is fixedly connected to the reversing rod 431. The mating wheel 32 is rotatably connected to the mounting block 31. The rotation axis is perpendicular to the axis of the central axis 12. When the top support member 3 is subjected to force and moves close to the central axis 12, the wheel surface of the mating wheel 32 contacts the side wall of the central axis 12.

[0042] Embodiment three: like Figure 6As shown, the difference from Example 2 is that in this embodiment, the top support member 3 is a contact rod 33, one end of the contact rod 33 is hinged to the force-bearing rod 41, the hinge axis is perpendicular to the axis of the central axis 12, and the other end is in contact with the side wall of the central axis 12; an adjustment space 22 is opened on the compensation clamp 2 and on the side of the contact rod 33 facing the abutment ring plate 241, and a support spring 44 is fixedly connected on the compensation clamp 2 and in the adjustment space 22, the support spring 44 and the contact rod 33 are in abutment on the side of the adjustment space 22, and the support spring 44 always applies a thrust to the contact rod 33, that is, if the contact rod 33 overcomes the thrust of the support spring 44, the contact rod 33 can swing into the adjustment space 22.

[0043] The implementation principle of a brake for a high-speed shaft of a mining truck in the embodiment of the present application is as follows: For embodiments two and three, when the abutment ring piece 241 approaches the transition shell cylinder 23, it first abuts against the force-receiving rod 41 and transmits thrust before contacting the transition shell cylinder 23. Under the action of the reversing component 43, the compensating snap ring 2 is stretched open, and at the same time, the axial force exerted on the compensating snap ring 2 gradually increases, and the static friction between it and the central axis rod 12 gradually decreases. When the axial thrust exerted on the compensating snap ring 2 is greater than the friction between it and the central axis rod 12, an axial movement trend is generated. At this time, the top support member 3 undergoes rolling deformation relative to the central axis rod 12 (the mating wheel 32 rolls or the contact rod 33 swings), which improves the smoothness of the movement of the compensating snap ring 2.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A brake for a high-speed shaft of a mining truck, comprising a fixed base (1) and a driving piston (13), wherein the fixed base (1) is provided with a driving groove (11), wherein the driving piston (13) is located in the driving groove (11) and slides, wherein a central axis rod (12) is fixedly connected to the bottom of the driving groove (11) on the fixed base (1), wherein a receiving groove (131) is provided on the side of the driving piston (13) facing the bottom of the driving groove (11), wherein one end of the central axis rod (12) extends into the receiving groove (131), wherein a compensating snap ring (2) is sleeved on the central axis rod (12), wherein a return spring (24) is coaxially connected to the compensating snap ring (2), wherein the central axis rod (12) is characterized in that: One end of the return spring (24) away from the compensating snap ring (2) transmits a thrust to the driving piston (13) toward the bottom of the driving groove (11); an adjustment notch (21) is provided on the compensating snap ring (2); when the compensating snap ring (2) is sleeved on the central shaft (12), the compensating snap ring (2) undergoes elastic deformation.

2. A brake for a high-speed shaft of a mining truck according to claim 1, characterized in that: The compensation snap ring (2) is provided with a transition shell (23) on its outer sleeve, the distance between two opposite end walls of the inner cavity of the transition shell (23) is greater than the thickness of the compensation snap ring (2), one end of the return spring (24) is fixedly connected to the transition shell (23), a retaining ring piece (133) is detachably connected to the driving piston (13) at the notch of the accommodating groove (131), and an abutting ring piece (241) is fixedly connected to one end of the return spring (24) away from the transition shell (23), and the abutting ring piece (241) abuts against the retaining ring piece (133).

3. A brake for a high-speed shaft of a mining truck according to claim 2, characterized in that: The side wall of the retaining ring piece (133) is formed with an external thread structure, the retaining ring piece (133) and the driving piston (13) are coaxially threadedly connected, a rotation-stopping spring (135) is clamped on the retaining ring piece (133), a retaining groove (134) is provided on the retaining ring piece (133), a rotation-stopping groove (132) is provided on the groove wall of the accommodating groove (131), the rotation-stopping groove (132) and the retaining groove are aligned and connected, and the rotation-stopping spring (135) passes through the retaining groove (134) and the rotation-stopping groove (132) at the same time.

4. The brake for a high-speed shaft of a mining truck according to claim 2, characterized in that: A supporting member (3) is slidably provided on the inner edge of the compensating snap ring (2); the sliding direction of the supporting member (3) relative to the compensating snap ring (2) is the radial direction of the central axis (12); when the supporting member (3) moves close to the central axis (12), it abuts against the side wall of the central axis (12) and applies a reaction force to the compensating snap ring (2) in a direction away from the central axis (12); a control mechanism (4) is also provided on the compensating snap ring (2); and the control mechanism (4) is used to control the sliding of the supporting member (3).

5. The brake for a high-speed shaft of a mining truck according to claim 4, characterized in that: The control mechanism (4) comprises a force-bearing rod (41), an initial position spring (42) and a reversing assembly (43). The force-bearing rod (41) is slidably connected to the compensation snap ring (2), and the sliding direction is parallel to the axis of the compensation snap ring (2). One end of the force-bearing rod (41) passes through the transition shell (23) and faces the abutment ring piece (241). When the abutment ring piece (241) and the force-bearing rod (41) abut, the reversing assembly (43) is used to vertically decompose the thrust from the abutment ring piece (241) received by the force-bearing rod (41), and the decomposed force is applied to the supporting member (3). One end of the initial position spring (42) is connected to the compensation snap ring (2), and the other end is connected to the force-bearing rod (41). In a natural state, the initial position spring (42) applies a thrust to the force-bearing rod (41) toward the abutment ring piece (241).

6. A brake for a high-speed shaft of a mining truck according to claim 5, characterized in that: The reversing assembly (43) comprises a reversing rod (431) and a pushing wedge (432), wherein the pushing wedge (432) is fixedly connected to the force-bearing rod (41), and the reversing rod (431) is slidably connected to the compensation snap ring (2), wherein the sliding direction is the radial direction of the compensation snap ring (2), and one end of the reversing rod (431) is connected to the top support member (3), and the other end is fixedly connected to the reversing wedge (433), and the wedge surface of the reversing wedge (433) abuts against the wedge surface of the pushing wedge (432).

7. A brake for a high-speed shaft of a mining truck according to claim 6, characterized in that: An abutment ball (411) is embedded in one end of the force bearing rod (41) facing the abutment ring piece (241), and the abutment ball (411) is used for rolling contact with the abutment ring piece (241).

8. A brake for a high-speed shaft of a mining truck according to claim 6 or 7, characterized in that: The supporting member (3) comprises a mounting block (31) and a matching wheel (32); the mounting block (31) is fixedly connected to the reversing rod (431); the matching wheel (32) is rotatably connected to the mounting block (31); the rotation axis is perpendicular to the axis of the central axis (12); and the wheel surface of the matching wheel (32) contacts the side wall of the central axis (12).

9. A brake for a high-speed shaft of a mining truck according to claim 6 or 7, characterized in that: The supporting member (3) is a contact rod (33), one end of which is hinged to the force-bearing rod (41), the hinge axis is perpendicular to the axis of the central axis (12), and the other end is in contact with the side wall of the central axis (12). An adjustment space (22) is provided on the compensation clamping ring (2) and on the side of the contact rod (33) facing the abutting ring sheet (241), and the adjustment space (22) is for the contact rod (33) to swing into.

10. A brake for a high-speed shaft of a mining truck according to claim 9, characterized in that: A support spring (44) is fixedly connected on the compensation clamp ring (2) and in the adjustment space (22); the support spring (44) and the contact rod (33) abut against one side of the adjustment space (22); and the support spring (44) always applies a thrust to the contact rod (33).

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