Rail type brake pad

Abstract

The utility model discloses a rail type brake pad, which relates to the technical field of vehicle braking, and comprises a friction particle, a plurality of first fixing holes, a plurality of second fixing holes, a plurality of first connecting rods, a plurality of second connecting rods and a plurality of second connecting rods, first fixing holes are formed in at least two corresponding edges of the friction particles; the steel backing is provided with second fixing holes matched with the first fixing holes, the number of the second fixing holes is the same as that of the first fixing holes, and the second fixing holes and the first fixing holes are in one-to-one correspondence and used for connecting friction particles to the steel backing. According to the rail type brake pad, the first fixing holes used for installing and fixing the friction particles and the steel backing are located in the edges of the friction particles, the rivets can be directly embedded into the first fixing holes in the edges of the friction particles, hole positions do not need to be reserved in the center area, the lower punch can cancel the core rod design, the die structure is greatly simplified, and the production efficiency is improved. And the mold manufacturing difficulty is obviously reduced, and the convenience and economic benefits of brake pad manufacturing are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle brake technical field especially relates to a rail type brake pad. BACKGROUND

[0002] Friction particles and steel back connection of the brake pad in the rail linear brake exist the following mode, friction particles and steel back are connected through the welding mode, but there is the problem of welding deformation, complex process, low efficiency, and the snap spring connection needs to set up the snap spring groove on the back of the steel back, and the snap spring groove can weaken the strength and rigidity of the steel back, and riveting mode is more reasonable and more economical compared with the above mode. However, when the friction particles are riveted and fixed, the lower punch needs to add a core rod in the process of pressing the friction body and the core rod needs to be accurately matched with the upper die, which leads to complex die structure, increases the difficulty of die manufacturing, and the brake pad structure is prone to deformation.

[0003] Therefore, how to improve the convenience of brake pad manufacturing while inhibiting the deformation of the structure is a technical problem to be solved by the person skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a rail type brake pad for improving the convenience of brake pad manufacturing while inhibiting the deformation of the structure.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A rail type brake pad comprises:

[0007] Friction particles have two opposite surfaces and a first fixing hole penetrating through the two surfaces of the friction particles, the first fixing hole is provided with a plurality of and is distributed along the edge of the friction particles, and the first fixing hole is provided on at least two corresponding edges of the friction particles;

[0008] Steel back is provided with a second fixing hole matched with the first fixing hole, the number of the second fixing hole is the same as that of the first fixing hole, and one first fixing hole corresponds to one second fixing hole, so that the friction particles are connected to the steel back.

[0009] Optionally, in the above-mentioned rail type brake pad, the first fixing hole is provided at the top corner of the two adjacent edges of the friction particles, and the first fixing hole is provided at least on the two opposite top corners on the center of the friction particles.

[0010] Optionally, in the above-mentioned rail type brake pad, the first fixing hole is provided at the top corner of the two adjacent edges of the friction particles, and the first fixing hole is provided at least on the two opposite top corners on the center of the friction particles.

[0011] Optionally, in the rail brake pad, the friction particle comprises a skeleton and a friction body, the friction body is located on the side of the skeleton away from the steel back, the first fixing hole is arranged on the skeleton, and the friction body is provided with an avoiding slot matched with the first fixing hole.

[0012] Optionally, in the rail brake pad, the first fixing hole is a stepped hole structure.

[0013] Optionally, in the rail brake pad, the side of the steel back for mounting the friction particle is provided with a mounting slot, and the mounting slot penetrates through two edges of the steel back along the width direction of the steel back.

[0014] Optionally, in the rail brake pad, the steel back is provided with a connecting hole penetrating through two sides, and along the length direction of the steel back, the connecting hole is located at the end of the steel back.

[0015] Optionally, in the rail brake pad, the steel back is provided with a guide hole penetrating through two sides, the guide hole is provided with a plurality of guide holes, each guide hole is arranged at the groove bottom of the mounting slot in a spaced manner, and the guide hole and the connecting hole are located on the symmetry axis parallel to the length direction of the steel back.

[0016] Optionally, in the rail brake pad, the steel back is provided with a plurality of friction particles, each friction particle is arranged in a spaced manner along the length direction of the steel back, and a gap is left between two adjacent friction particles.

[0017] Optionally, in the rail brake pad, the rail brake pad further comprises a rivet, the rivet sequentially penetrates through the first fixing hole and the second fixing hole, so that the steel back and the friction particle are mounted and fixed through the rivet, the first fixing hole and the second fixing hole.

[0018] In the track-type brake pad provided by this utility model, the friction particles have multiple first fixing holes penetrating both sides, and these first fixing holes are spaced apart along the edges of the friction particles. At least two opposite edges of the four edges of the friction particles also have first fixing holes. A second fixing hole is provided on the steel back for mounting the friction particles. When the friction particles and the steel back are installed together, the first fixing holes and the second fixing holes mate, and the centers of the first fixing holes and the centers of the second fixing holes are on the same axis. Compared with the prior art, the first fixing holes for mounting and fixing the friction particles to the steel back in the track-type brake pad provided by this utility model are located at the edges of the friction particles. Rivets can be directly embedded into the first fixing holes at the edges of the friction particles, eliminating the need for pre-reserved holes in the central area. The lower punch can eliminate the need for a mandrel design, significantly simplifying the mold structure, significantly reducing the difficulty of mold manufacturing and production costs, thereby improving the convenience and economic benefits of brake pad manufacturing. Meanwhile, the fixing point between the friction particles and the steel back is close to the edge, and the stress is transmitted to the steel back through the rivets through a shorter path and a more uniform distribution, avoiding stress concentration in the central area. The edge riveting forms a support structure similar to a "cantilever beam", which improves the bending resistance at the junction of the friction particles and the steel back and reduces warping deformation under braking pressure. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the friction particles disclosed in the embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the skeleton structure disclosed in the embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the steel back structure disclosed in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the track-type brake pad disclosed in the embodiment of this utility model;

[0024] Figure 5 for Figure 4 Sectional view of AA;

[0025] Figure 6 This is a schematic diagram of the structure of the friction particles disclosed in another embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a track-type brake pad disclosed in another embodiment of the present invention.

[0027] Reference signs:

[0028] 100 is friction particle, 110 is first fixing hole, 120 is framework, 130 is friction body, 131 is avoiding slot;

[0029] 200 is steel back, 210 is second fixing hole, 220 is installation slot, 230 is connecting hole, 240 is guide hole;

[0030] 300 is rivet. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited. The meaning of "several" is one or more than one, unless otherwise explicitly and specifically limited.

[0034] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0035] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The core of the utility model lies in providing a rail type brake pad for improving the convenience of pad manufacturing while restraining the deformation of structure.

[0037] For example, Figure 1 And Figure 3As shown, the utility model discloses a track type brake shoe, including friction particle 100 and steel back 200. Among them, friction particle 100 has opposite two sides, and friction particle 100 is provided with a plurality of first fixed holes 110 that pass through two sides, and each first fixed hole 110 is spaced apart distribution along the edge of friction particle 100, and at least opposite two edges among four edges of friction particle 100 are spaced apart and arranged with first fixed hole 110, ensure the stability of the installation of friction particle 100. Steel back 200 is provided with second fixed hole 210, and second fixed hole 210 passes through steel back 200, and the number of second fixed hole 210 is same with the number of first fixed hole 110, when friction particle 100 is installed with steel back 200, one first fixed hole 110 cooperates with one second fixed hole 210, and when cooperating, the center of first fixed hole 110 should be on the same axis with the center of second fixed hole 210, to ensure the accuracy and stability of assembly. The first fixed hole 110 of the track type brake shoe provided in the embodiment is located at the edge of the friction particle 100, the lower punch can cancel the core rod design in the process of pressing the friction body green compact, greatly simplifies the mold structure, significantly reduces the mold manufacturing difficulty and production cost, and then improves the convenience and economic benefit of the brake shoe production. At the same time, the steel back 200 may be slightly bent due to load during braking, if the fixed point is located in the middle of the friction particle 100, the deformation direction of the friction body 130 and the steel back 200 is easy to conflict, leading to interface peeling or shear failure, and the fixed point of the friction particle 100 and the steel back 200 provided in the embodiment is close to the edge, allowing the friction particle 100 and the steel back 200 to deform by the small rotation or displacement of the rivet during deformation, reducing the interface shear force, and under alternating load, the edge riveting structure can absorb vibration energy through local elastic deformation, reduce the risk of fatigue damage, the stress is transmitted to the steel back 200 through the rivet, the path is shorter and the distribution is more uniform, the stress peak value of the center region of the friction particle 100 is reduced, the friction particle 100 expands to the edge riveting point as a fulcrum to extend freely, reduces the accumulation of thermal stress, inhibits thermal deformation, and can meet the track braking at 200-300km / h.

[0038] As Figure 6 And Figure 7 As shown, the first fixed hole 110 is arranged at the top corner position where the two adjacent edges of the friction particle 100 intersect, and at least two opposite top corners on the center of the friction particle 100 are provided with the first fixed hole 110, that is, the two top corners of the diagonal line of the friction particle 100 are provided with the first fixed hole 110, the stress is concentrated in the two diagonal fixed regions, the force arm is increased, the unit area load is lower, and then the local stress is relatively small, reducing the problem of local deformation.

[0039] Further, the first fixing holes 110 are arranged symmetrically with the center of the friction particle 100 on the four corners of the friction particle 100, so that the fixing points of the friction particle 100 and the steel back 200 are symmetrically distributed, the friction particle 100 can be uniformly expanded in multiple directions, the overall deformation is further offset, the symmetrically riveted corners form a couple of forces, the torque in the braking process is offset, the eccentric wear of the friction body 130 is reduced, the positioning accuracy of the assembly is improved, and the assembly error is reduced.

[0040] As shown in Figure 1 and Figure 2 , the friction particle 100 includes a framework 120 and a friction body 130, the surface of the framework 120 is plated with copper for being fitted with the friction body 130, and the framework 120 and the friction body 130 are welded and fixed by sintering. The surface plated with copper facilitates the welding and fixing of the friction body 130 and the framework 120. When the friction particle 100 is installed with the steel back 200, the friction body 130 is located on the side of the framework 120 away from the steel back 200, and the first fixing hole 110 is arranged on the framework 120. Meanwhile, the friction body 130 is provided with an avoiding groove 131, and the groove of the avoiding groove 131 is located on the side of the friction body 130. The avoiding groove 131 improves the disassembly and assembly convenience of the rivet and the first fixing hole 110, and the avoiding groove 131 fully protects the rivet located in the avoiding groove 131, reduces the interference damage of the rivet from the outside, and improves the reliability and service life of the rivet structure. In addition, the framework 120 is also provided with a positioning groove, and the friction body 130 is provided with a positioning column. When the framework 120 and the friction body 130 are fitted and fixed, the positioning column of the friction body 130 cooperates with the positioning groove of the framework 120 to play a positioning role, so as to ensure the assembly accuracy of the framework 120 and the friction body 130.

[0041] As shown in Figure 2 , the first fixing hole 110 arranged on the framework 120 is a stepped hole structure, the larger diameter hole in the stepped hole structure is located on the side of the framework 120 away from the steel back 200, and faces the friction body 130, and the smaller diameter hole penetrates the framework 120, and the center of the smaller diameter hole and the center of the larger diameter hole are located on the same axis. The first fixing hole 110 with the stepped hole structure guides the accurate embedding of the rivet, the rivet head is sunk into the large hole section, further improves the protection of the rivet, avoids the wear of the rivet, and also improves the appearance of the product.

[0042] As shown in Figure 3As shown, the steel back 200 is also provided with a mounting groove 220, which is located on the side for mounting the friction particles 100, and penetrates the two side faces of the steel back 200 along the width direction of the steel back 200. The mounting groove 220 improves the accuracy of the mounting cooperation between the friction particles 100 and the steel back 200, and the friction particles 100 located in the mounting groove 220 improve the stability of the mounting of the steel back 200. In addition, the mounting groove 220 penetrating the two side faces of the steel back 200 is beneficial to the air flow and heat dissipation, and improves the heat dissipation efficiency during braking.

[0043] As shown in Figure 3 , the steel back 200 is a long strip-shaped plate structure, and is a metal mechanical processing piece with surface corrosion prevention treatment. The steel back 200 is provided with a connecting hole 230 penetrating the two faces of the steel back 200, and the two end portions of the steel back 200 are also provided with the connecting hole 230 along the length direction of the steel back 200. Thus, the rail brake pad provided in the embodiment is connected with the brake device of the accelerated mass vehicle through the connecting hole 230. In a specific embodiment, the connecting hole 230 is also a stepped hole structure, so as to protect the connecting bolt sunk in the stepped hole and improve the reliability and service life of the connecting structure.

[0044] As shown in Figure 3 and Figure 4 , the steel back 200 is also provided with a guide hole 240 penetrating the two faces of the steel back 200. The guide column of the brake device is inserted into the guide hole 240 of the steel back 200. The brake is realized by pushing the rail brake pad to contact the guide rail through the brake. The guide hole 240 is provided with a plurality of guide holes 240, which are arranged on the groove bottom of the mounting groove 220 of the steel back 200 along the length direction of the steel back 200. In addition, the guide hole 240 and the connecting hole 230 are located on the symmetry axis parallel to the length direction of the steel back 200. Thus, the symmetrical layout of the hole positions can inhibit resonance.

[0045] In the rail brake pad provided in the embodiment, a plurality of friction particles 100 are mounted on the steel back 200. The friction particles 100 are arranged in a mounting groove 220 along the length direction of the steel back 200. In addition, a gap is left between the two adjacent friction particles 100. The gap allows the friction particles 100 to expand transversely, so as to avoid extrusion deformation. In addition, the gap between the two adjacent friction particles 100 promotes air flow, which is beneficial to improve the heat dissipation during braking. In addition, the debris generated by the brake friction can also be timely removed through the gap.

[0046] As shown in Figure 5As shown, the rail brake pad further comprises rivets 300, the rivets 300 pass through the first fixing holes 110 of the friction particles 100 and the second fixing holes of the steel back 200 in sequence when the steel back 200 and the friction particles 100 are installed, so as to realize the installation and fixation of the friction particles 100 and the steel back 200, the material of the rivets 300 is high-temperature alloy, the head part is pre-coated with molybdenum disulfide lubricant, the rivets are pressed by a hydraulic riveting machine, the riveting force is uniformly loaded, the oxidation layer of the riveting interface is self-sealed for protection, the maintenance in the later period is reduced, and the service life of the structure is improved.

[0047] In the description of the above-described embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rail brake shoe, characterized by, The application relates to a rail brake block. The friction particle has two opposite surfaces and a first fixing hole penetrating through the two surfaces, the first fixing hole is arranged in multiple and is distributed along the edge of the friction particle, and the first fixing hole is arranged on at least two corresponding edges of the friction particle. The steel back is provided with a second fixing hole matched with the first fixing hole, the number of the second fixing hole is the same as that of the first fixing hole, and one first fixing hole corresponds to one second fixing hole, so that the friction particle is connected to the steel back.

2. Rail brake pad according to claim 1, characterized in that The first fixing hole is arranged at the top corner of two adjacent edges of the friction particle, and the first fixing hole is arranged on at least two opposite top corners of the connecting line located on the center of the friction particle.

3. The rail brake pad of claim 2, wherein, The first fixing hole is arranged on the four top corners of the friction particle, and the four first fixing holes are symmetrically arranged with the center of the friction particle.

4. The rail brake shoe of claim 1, wherein, The friction particle comprises a framework and a friction body, the friction body is located on the surface of the framework away from the steel back, the first fixing hole is arranged on the framework, and the friction body is provided with an avoiding groove matched with the first fixing hole.

5. The rail brake shoe of claim 4, wherein, The first fixing hole is a stepped hole structure.

6. The rail brake shoe of claim 1, wherein, One surface of the steel back for mounting the friction particle is provided with a mounting groove, and the mounting groove penetrates through two edges of the steel back along the width direction of the steel back.

7. The rail brake shoe of claim 6, wherein, The steel back is provided with a connecting hole penetrating through two surfaces, and the connecting hole is located at the end of the steel back along the length direction of the steel back.

8. The rail brake shoe of claim 7, wherein, The steel back is provided with a guide hole penetrating through two surfaces, the guide hole is arranged in multiple, each guide hole is arranged on the groove bottom of the mounting groove in a spaced manner, and the guide hole and the connecting hole are located on the symmetry axis parallel to the length direction of the steel back.

9. The rail brake shoe of claim 1 wherein, The steel back is mounted with multiple friction particles, each friction particle is arranged in a spaced manner along the length direction of the steel back, and a gap is left between two adjacent friction particles.

10. Rail brake pad according to any of claims 1-9, characterized in that The rail brake block further comprises a rivet, the rivet sequentially penetrates through the first fixing hole and the second fixing hole, so that the steel back and the friction particle are mounted and fixed through the rivet, the first fixing hole and the second fixing hole.

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