Hydraulic brake caliper for wheel excavator

Abstract

The utility model provides a hydraulic brake caliper for a wheel excavator, which comprises a caliper body, a plurality of piston cavities are arranged in the caliper body, separated piston assemblies are arranged in the piston cavities, each separated piston assembly comprises a piston body and a moving part, one side of the piston body far away from the caliper body is provided with a concave caulking groove, and the moving part is embedded in the caulking groove. A push block protruding out of the piston body is arranged on the moving piece. According to the structure, due to the fact that the separated piston assembly is arranged in the piston cavity of the caliper body and comprises the piston body and the moving piece, the inwards-concave caulking groove is formed in the side, away from the caliper body, of the piston body, the moving piece is embedded into the caulking groove, and the pushing block protruding out of the piston body is arranged on the moving piece. Through the cooperation of the piston body and the moving part of the separated piston assembly, when the moving part is damaged, the moving part can be directly detached for maintenance or replacement, and the damage rate of the piston body can be reduced in the separated mode.

Description

Technical Field

[0001] The utility model relates to the technical field of brake calipers, in particular to a hydraulic brake caliper for a wheeled excavator. Background Art

[0002] When performing engineering operations, excavators are one of the essential operating equipment. Most common excavators move using crawlers, while some use tires. In this case, wheeled excavators require brake calipers to assist with braking operations.

[0003] Most of the pistons inside the existing brake calipers are of an integral structure. During use, when maintenance or replacement is required, it is rather troublesome, and the entire piston needs to be replaced, increasing the maintenance cost. Summary of the Utility Model

[0004] The utility model discloses a hydraulic brake caliper for a wheeled excavator, mainly solving the problems that most of the pistons inside the existing brake calipers are of an integral structure, which is not convenient for maintenance or replacement and has a high maintenance cost.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] The utility model provides a hydraulic brake caliper for a wheeled excavator, including a caliper body. A plurality of piston chambers are arranged in the caliper body. A split piston assembly is arranged in the piston chamber. The split piston assembly includes a piston body and a moving member. An inwardly concave groove is arranged on the side of the piston body away from the caliper body. The moving member is embedded in the groove. A push block protruding out of the piston body is arranged on the moving member.

[0007] In one embodiment, a support ball is arranged between the piston body and the moving member.

[0008] In one embodiment, an inwardly concave first positioning groove is arranged at the position of the moving member corresponding to the support ball, and one side of the support ball is embedded in the first positioning groove.

[0009] In one embodiment, an inwardly concave second positioning groove is arranged at the position of the groove of the piston body corresponding to the support ball, and the other side of the support ball is embedded in the second positioning groove.

[0010] In one embodiment, an oil inlet and a communication hole are arranged in the caliper body, and the communication hole communicates with the piston chamber and the oil inlet respectively.

[0011] In one embodiment, a tubing protection block is arranged at the position of the caliper body corresponding to the oil inlet.

[0012] In one embodiment, a sealing groove is provided in the piston cavity, a sealing ring is provided in the sealing groove, the outer edge of the sealing ring is closely attached to the inner wall of the sealing groove, and the inner edge of the sealing ring is closely attached to the piston body.

[0013] In one embodiment, a dust cover is provided at the opening of the piston cavity, a limiting ring is provided on the dust cover, an inner concave limiting groove is provided at the position of the push block corresponding to the limiting ring, and the limiting ring is embedded in the limiting groove.

[0014] The advantages or beneficial effects in the above technical solutions at least include: Since a split piston assembly is provided in the piston cavity of the pliers body, the split piston assembly includes a piston body and a moving part, a concave embedding groove is provided on the side of the piston body away from the pliers body, the moving part is embedded in the embedding groove, and a push block protruding from the piston body is provided on the moving part. Therefore, through the cooperation of the piston body and the moving part of the split piston assembly, when the moving part is damaged, the moving part can be directly disassembled for repair or replacement, and its split form can reduce the damage rate of the piston body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are included in this specification and form a part of this specification.

[0016] Figure 1 Shows a schematic diagram of a hydraulic brake caliper for a wheeled excavator according to an exemplary embodiment of the present invention;

[0017] Figure 2 Shows according to an exemplary embodiment of the present invention Figure 1 exploded schematic diagram;

[0018] Figure 3 Shows an exploded schematic diagram of a split piston assembly, a sealing ring and a dust cover according to an exemplary embodiment of the present invention;

[0019] Figure 4 Shows a schematic diagram of a moving part according to an exemplary embodiment of the present invention;

[0020] Figure 5 Shows according to an exemplary embodiment of the present invention Figure 1 cross-sectional schematic diagram.

[0021] Description of the reference numerals:

[0022] 1, pliers body;

[0023] 11, piston cavity; 12, oil inlet; 13, communication hole; 14, oil pipe protection block; 15, sealing groove;

[0024] 2. Split piston assembly

[0025] 21. Piston body; 211. Embedded groove; 212. Second positioning groove; 22. Moving part; 221. Pushing block; 222. First positioning groove; 223. Limiting groove; 23. Supporting ball

[0026] 3. Sealing ring

[0027] 4. Dust cover

[0028] 41. Limiting ring Detailed implementation mode

[0029] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0030] It should be noted that, without conflict, the implementation modes and features in the implementation modes of the present invention can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the implementation modes.

[0031] As used herein, the term "including" and its variations are open-ended, that is, "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence relationship of the functions performed by these devices, modules or units.

[0032] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0033] The names of the messages or information exchanged between multiple devices in the implementation modes of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0034] See Figures 1 to 5, an embodiment of the present utility model provides a hydraulic brake caliper for a wheeled excavator, including a caliper body 1. A plurality of piston cavities 11 are arranged in the caliper body 1. A split piston assembly 2 is arranged in the piston cavity 11. The split piston assembly 2 includes a piston body 21 and a moving member 22. An inwardly concave groove 211 is arranged on the side of the piston body 21 away from the caliper body 1. The moving member 22 is embedded in the groove 211. A push block 221 protruding out of the piston body 21 is arranged on the moving member 22.

[0035] With the above structure, since the split piston assembly 2 is arranged in the piston cavity 11 of the caliper body 1, the split piston assembly 2 includes the piston body 21 and the moving member 22. An inwardly concave groove 211 is arranged on the side of the piston body 21 away from the caliper body 1. The moving member 22 is embedded in the groove 211. A push block 221 protruding out of the piston body 21 is arranged on the moving member 22. Therefore, through the cooperation of the piston body 21 and the moving member 22 of the split piston assembly 2, when the moving member 22 is damaged, the moving member 22 can be directly disassembled for repair or replacement, and its split structure can reduce the damage rate of the piston body 21.

[0036] In one embodiment, see Figure 2 , Figure 3 , Figure 4 and Figure 5 , a support ball 23 is arranged between the piston body 21 and the moving member 22. In actual use, with the arrangement of the support ball 23, the force between the piston body 21 and the moving member 22 can be concentrated, and the radial force component is small.

[0037] An inwardly concave first positioning groove 222 is arranged at the position of the moving member 22 corresponding to the support ball 23. One side of the support ball 23 is embedded in the first positioning groove 222. In actual use, with the arrangement of the first positioning groove 222, the moving member 22 can play a role in positioning the support ball 23 to prevent the support ball 23 from shifting.

[0038] An inwardly concave second positioning groove 212 is arranged at the position of the groove 211 of the piston body 21 corresponding to the support ball 23. The other side of the support ball 23 is embedded in the second positioning groove 212. In actual use, with the arrangement of the second positioning groove 212, the piston body 21 can play a role in positioning the support ball 23 to prevent the support ball 23 from shifting.

[0039] In one embodiment, see Figure 2 and Figure 5, an oil inlet 12 and a communication hole 13 are provided in the pliers body 1, and the communication hole 13 communicates with the piston chamber 11 and the oil inlet 12 respectively. In actual use, the oil inlet 12 is used to connect an external oil inlet pipe, and with the cooperation of the communication hole 13, the hydraulic oil input by the external oil inlet pipe can be introduced from the oil inlet 12 into the communication hole 13 and then from the communication hole 13 into the piston chamber 11 to facilitate driving the separable piston assembly 2.

[0040] A tubing protection block 14 is provided at the position corresponding to the oil inlet 12 on the pliers body 1. In actual use, with the setting of the tubing protection block 14, it can play a role in shielding and protecting the oil inlet pipe.

[0041] In one embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , a sealing groove 15 is provided in the piston chamber 11, a sealing ring 3 is provided in the sealing groove 15, the outer edge of the sealing ring 3 is closely attached to the inner wall of the sealing groove 15, and the inner edge of the sealing ring 3 is closely attached to the piston body 21. In actual use, with the setting of the sealing ring 3, it can seal off the gap between the piston chamber 11 and the piston body 21 to prevent the hydraulic oil in the piston chamber 11 from leaking out.

[0042] A dust cover 4 is provided at the opening of the piston chamber 11, a limit ring 41 is provided on the dust cover 4, and an inner concave limit groove 223 is provided at the position of the push block 221 corresponding to the limit ring 41, and the limit ring 41 is embedded in the limit groove 223. In actual use, with the setting of the dust cover 4, it can play a role in dust prevention for the piston chamber 11, and with the cooperation of the limit ring 41 and the limit groove 223, the dust cover 4 can be installed on the push block 221.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0044] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present invention, rather than limiting the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A hydraulic brake caliper for a wheeled excavator, characterized in that: It comprises a caliper body, a plurality of piston cavities are arranged in the caliper body, a separate piston assembly is arranged in the piston cavity, the separate piston assembly comprises a piston body and a moving part, a concave embedding groove is arranged on the side of the piston body away from the caliper body, the moving part is embedded in the embedding groove, and a push block protruding from the piston body is arranged on the moving part.

2. The hydraulic brake caliper for a wheel excavator according to claim 1, characterized in that: A supporting ball is arranged between the piston body and the moving part.

3. The hydraulic brake caliper for a wheel excavator according to claim 2, characterized in that: The position of the moving member corresponding to the supporting ball is provided with a first concave positioning groove, and one side of the supporting ball is embedded in the first positioning groove.

4. The hydraulic brake caliper for a wheel excavator according to claim 2, characterized in that: The position of the embedding groove of the piston body corresponding to the supporting ball is provided with a second positioning groove which is only concave, and the other side of the supporting ball is embedded in the second positioning groove.

5. The hydraulic brake caliper for a wheel excavator according to claim 1, characterized in that: An oil inlet and a communicating hole are arranged in the caliper body, and the communicating hole is communicated with the piston cavity and the oil inlet respectively.

6. The hydraulic brake caliper for a wheel excavator according to claim 5, characterized in that: An oil pipe protection block is arranged on the caliper body at a position corresponding to the oil inlet.

7. The hydraulic brake caliper for a wheel excavator according to claim 1, characterized in that: A sealing groove is arranged in the piston cavity, a sealing ring is arranged in the sealing groove, the outer edge of the sealing ring is tightly fitted with the inner wall of the sealing groove, and the inner edge of the sealing ring is tightly fitted with the piston body.

8. The hydraulic brake caliper for a wheel excavator according to claim 1, characterized in that: The cavity opening of the piston cavity is provided with a dust cover, a limiting ring is provided on the dust cover, an inner concave limiting groove is provided at a position of the push block corresponding to the limiting ring, and the limiting ring is embedded in the limiting groove.

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