Tractor chassis brake housing with locating retaining pin

Abstract

The utility model relates to tractor chassis brake system technical field, concretely relates to a tractor chassis brake casing with positioning retaining pin, including brake casing main part, the inside fixed setting of brake casing main part has the installation slot, the inside fixed setting of brake casing main part has wear -resisting layer, the outside fixed setting of brake casing main part has three to four bolt connection holes, the right side fixed setting of the above of brake casing main part has the first limit pad, the left side fixed setting of the above of brake casing main part has the second limit pad, the below fixed setting of first limit pad has the first locating groove, the inside fixed setting of first locating groove has the first anti - knock pad, through setting wear -resisting layer of manganese steel material, effectively improved the wear resistance of brake casing main part, prolonged the life, the cooperation of positioning retaining pin and limit pad, guaranteed the precision of brake casing body installation and the stability when working, avoided displacement and sway.

Description

Technical Field

[0001] This utility model relates to the technical field of tractor chassis braking systems, and in particular to a tractor chassis brake housing with a positioning retaining pin. Background Technology

[0002] Tractors often face complex road conditions and high-load working scenarios in agricultural operations. As the core load-bearing component of the braking system, the chassis brake housing bears the friction of the internal brake shoes and friction pads for a long time. Traditional brake housings are mostly cast from a single material and do not have a special wear-resistant structure on the inside. After a period of use, they are prone to problems such as thinning of the wall thickness and surface deformation due to friction wear. This not only shortens the overall service life of the housing, but may also lead to an increase in the brake clearance, affecting the braking sensitivity and posing a safety hazard.

[0003] Meanwhile, the traditional brake housing has a relatively simple installation and positioning structure design, which relies on the cooperation of bolt holes and external components to achieve fixation. It lacks a dedicated positioning and limiting mechanism. During the bumpy driving or frequent braking of the tractor, the housing is prone to slight displacement or shaking, resulting in uneven stress on the bolt connection parts. Long-term use may lead to bolt loosening, breakage and other failures. In addition, during the installation and disassembly of the parts, the positioning groove is in direct contact with the external components, which is prone to bumps and scratches, resulting in a decrease in positioning accuracy and further affecting the stability of the braking system. Summary of the Invention

[0004] The purpose of this invention is to provide a tractor chassis brake housing with a positioning retaining pin, which solves the problems of poor wear resistance, insufficient positioning accuracy, and easy damage to parts caused by impacts in existing devices.

[0005] To achieve the above objectives, this utility model provides a tractor chassis brake housing with a positioning retaining pin, comprising a brake housing body, characterized in that: an installation groove is fixedly provided on the inner side of the brake housing body, a wear-resistant layer is fixedly provided on the inner side of the brake housing body, and three to four bolt connection holes are fixedly provided on the outer side of the brake housing body.

[0006] A first limiting block is fixedly disposed on the upper right side of the brake housing body, a second limiting block is fixedly disposed on the upper left side of the brake housing body, and a first positioning groove is fixedly disposed below the first limiting block.

[0007] The first anti-collision pad is fixedly provided on the inner side of the first positioning groove, and the first positioning retaining pin is fixedly provided on the upper part of the first limiting block.

[0008] The first positioning retaining pin is fixedly provided with a first limiting thread on its upper outer side, and the second positioning block is fixedly provided with a second positioning groove on its lower side.

[0009] The second positioning groove is provided with a second anti-collision pad, the second positioning block is provided with a second positioning retaining pin above it, and the second positioning retaining pin is provided with a second limiting thread on the outer side above it.

[0010] The wear-resistant layer is made of high manganese steel and has a thickness of 2-3 mm. The wear-resistant layer is fixedly connected to the inner wall of the brake housing body by welding.

[0011] The inner wall of the bolt connection hole is provided with internal thread, and the depth of the bolt connection hole is consistent with the wall thickness of the brake housing body; the center distance between two adjacent bolt connection holes is equal, and the diameter of the bolt connection hole is 10-12mm.

[0012] The first positioning groove and the second positioning groove have the same groove size, and the groove depth of the first positioning groove and the second positioning groove is 5-8mm; the first positioning retaining pin and the second positioning retaining pin have the same length, and the diameter of the first positioning retaining pin is 0.1-0.2mm smaller than the groove width of the first positioning groove.

[0013] This utility model discloses a tractor chassis brake housing with a positioning retaining pin. By setting a wear-resistant layer made of high manganese steel, the wear resistance of the brake housing body is effectively improved, and the service life is extended. The cooperation of the positioning retaining pin and the limiting block ensures the accuracy of the brake housing installation and the stability during operation, avoiding displacement and shaking. The design of the anti-collision pad reduces the impact damage between parts, further improving the reliability of the brake housing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 For the present utility model Figure 1 Enlarged structural diagram of a local detail at point A;

[0018] Figure 4 For the present utility model Figure 1 A magnified structural diagram showing the details at point B in the middle.

[0019] In the diagram: 1. Brake housing body; 2. Mounting groove; 3. Wear-resistant layer; 4. Bolt connection hole; 5. First limiting block; 6. Second limiting block; 7. First positioning groove; 8. First anti-collision pad; 9. First positioning retaining pin; 10. First limiting thread; 11. Second positioning groove; 12. Second anti-collision pad; 13. Second positioning retaining pin; 14. Second limiting thread. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] The first embodiment of this application is as follows:

[0022] Please see Figure 1 - Figure 3 This embodiment of a tractor chassis brake housing with a positioning retaining pin includes a brake housing body 1, characterized in that: an installation groove 2 is fixedly provided on the inner side of the brake housing body 1, a wear-resistant layer 3 is fixedly provided on the inner side of the brake housing body 1, and three to four bolt connection holes 4 are fixedly provided on the outer side of the brake housing body 1.

[0023] A first limiting block 5 is fixedly installed on the upper right side of the brake housing body 1, a second limiting block 6 is fixedly installed on the upper left side of the brake housing body 1, a first positioning groove 7 is fixedly installed below the first limiting block 5, a first anti-collision pad 8 is fixedly installed inside the first positioning groove 7, a first positioning retaining pin 9 is fixedly installed above the first limiting block 5, a first limiting thread 10 is fixedly installed on the upper outer side of the first positioning retaining pin 9, a second positioning groove 11 is fixedly installed below the second limiting block 6, a second anti-collision pad 12 is fixedly installed on the inner side of the second positioning groove 11, a second positioning retaining pin 13 is fixedly installed above the second limiting block 6, and a second limiting thread 14 is fixedly installed on the upper outer side of the second positioning retaining pin 13.

[0024] By engaging the first positioning retaining pin 9 and the second positioning retaining pin 13 with their corresponding installation positions, and with the limiting effect of the first limiting block 5 and the second limiting block 6, the brake housing can be precisely installed on the tractor chassis. The first limiting thread 10 and the second limiting thread 14 can enhance the fixing effect of the positioning retaining pin and prevent loosening. The first anti-collision pad 8 and the second anti-collision pad 12 can play a buffering role during the installation and operation of the parts, avoiding collision damage.

[0025] The second embodiment of this application is as follows:

[0026] Please see Figure 1 - Figure 3This embodiment of a tractor chassis brake housing with a positioning retaining pin includes a brake housing body 1, characterized in that: an installation groove 2 is fixedly provided on the inner side of the brake housing body 1, a wear-resistant layer 3 is fixedly provided on the inner side of the brake housing body 1, and three to four bolt connection holes 4 are fixedly provided on the outer side of the brake housing body 1.

[0027] The wear-resistant layer 3 is made of high manganese steel and has a thickness of 2-3 mm. The wear-resistant layer 3 is fixedly connected to the inner wall of the brake housing body 1 by welding. The inner wall of the bolt connection hole 4 is provided with internal threads, and the depth of the bolt connection hole 4 is consistent with the wall thickness of the brake housing body 1. The center distance between two adjacent bolt connection holes 4 is equal, and the diameter of the bolt connection hole 4 is 10-12 mm. The first positioning groove 7 and the second positioning groove 11 have the same groove size, and the groove depth of the first positioning groove 7 and the second positioning groove 11 is 5-8 mm. The first positioning retaining pin 9 and the second positioning retaining pin 13 have the same length, and the diameter of the first positioning retaining pin 9 is 0.1-0.2 mm smaller than the groove width of the first positioning groove 7.

[0028] The wear-resistant layer 3 made of high-manganese steel effectively resists friction and wear generated during braking by utilizing its high wear resistance. The welding fixing method ensures the firmness of the connection between the wear-resistant layer 3 and the brake housing body 1. The design of the bolt connection hole 4 facilitates the stable connection of the brake housing with other components. The equal center distance ensures uniform force distribution. The dimensional matching of the first positioning groove 7 and the second positioning groove 11, as well as the first positioning retaining pin 9 and the second positioning retaining pin 13, further ensures the accuracy of positioning.

[0029] Working principle: First, during installation, the operator aligns the mounting groove 2 on the inner side of the brake housing body 1 with the brake shoes, friction pads, and other components of the tractor chassis. Then, the first positioning retaining pin 9 and the second positioning retaining pin 13 are inserted into the corresponding mounting holes on the chassis. Initial positioning is achieved through the clearance fit between the positioning retaining pins and the mounting holes. Simultaneously, the first limiting block 5 and the second limiting block 6 are in contact with the chassis surface, limiting lateral displacement of the housing. Next, bolts are used to tighten the housing through three to four bolt connection holes 4 on the outer side of the brake housing body 1. Because the center distance between adjacent bolt holes is equal, the housing is subjected to uniform force, avoiding localized stress concentration. During braking, when the tractor needs to decelerate or stop, the brake shoes and friction pads move towards the brake housing body 1 under the drive of the braking system. The inner walls are fitted together, generating frictional resistance. At this time, the 2-3mm thick high-manganese steel wear-resistant layer 3 on the inner side of the brake housing body 1 directly contacts the friction pad. Utilizing the high hardness and high wear resistance of high-manganese steel, it withstands frictional wear, protects the brake housing body 1 from damage, and extends the overall service life. At the same time, the limiting threads on the first positioning retaining pin 9 and the second positioning retaining pin 13 are tightly engaged with the inner wall of the mounting hole. Combined with the tightening effect of the bolts, this prevents the housing from loosening or shifting under bumps or braking impacts. Meanwhile, the anti-collision pads on the inner sides of the first positioning groove 7 and the second positioning groove 11 can buffer the slight shaking of the parts, preventing deformation or scratches caused by direct collision between the positioning groove and external parts, ensuring long-term stable positioning accuracy, and guaranteeing the continuous and reliable operation of the braking system.

[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A tractor chassis brake housing with a positioning retaining pin, comprising a brake housing body (1), characterized in that: The brake housing body (1) has an installation groove (2) fixedly provided on the inner side, a wear-resistant layer (3) fixedly provided on the inner side, and three to four bolt connection holes (4) fixedly provided on the outer side. A first limiting block (5) is fixedly provided on the upper right side of the brake housing body (1), a second limiting block (6) is fixedly provided on the upper left side of the brake housing body (1), and a first positioning groove (7) is fixedly provided below the first limiting block (5).

2. A tractor chassis brake housing with a positioning retaining pin as described in claim 1, characterized in that: A first anti-collision pad (8) is fixedly provided on the inner side of the first positioning groove (7), and a first positioning retaining pin (9) is fixedly provided on the top of the first limiting block (5).

3. A tractor chassis brake housing with a positioning retaining pin as described in claim 2, characterized in that: A first limiting thread (10) is fixedly provided on the upper outer side of the first positioning retaining pin (9), and a second positioning groove (11) is fixedly provided on the lower side of the second limiting block (6).

4. A tractor chassis brake housing with a positioning retaining pin as described in claim 3, characterized in that: A second anti-collision pad (12) is fixedly provided on the inner side of the second positioning groove (11), a second positioning retaining pin (13) is fixedly provided on the upper side of the second limiting block (6), and a second limiting thread (14) is fixedly provided on the upper outer side of the second positioning retaining pin (13).

5. A tractor chassis brake housing with a positioning retaining pin as described in claim 1, characterized in that: The wear-resistant layer (3) is made of high manganese steel and has a thickness of 2-3 mm. The wear-resistant layer (3) is fixedly connected to the inner wall of the brake housing body (1) by welding.

6. A tractor chassis brake housing with a positioning retaining pin as described in claim 1, characterized in that: The inner wall of the bolt connection hole (4) is provided with internal thread, and the depth of the bolt connection hole (4) is consistent with the wall thickness of the brake housing body (1); the center distance between two adjacent bolt connection holes (4) is equal, and the diameter of the bolt connection hole (4) is 10-12mm.

7. A tractor chassis brake housing with a positioning retaining pin as described in claim 4, characterized in that: The first positioning groove (7) and the second positioning groove (11) have the same groove size, and the groove depth of the first positioning groove (7) and the second positioning groove (11) is 5-8mm; the first positioning retaining pin (9) and the second positioning retaining pin (13) have the same length, and the diameter of the first positioning retaining pin (9) is 0.1-0.2mm smaller than the groove width of the first positioning groove (7).

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