Brake pump air tightness test positioning tool

Abstract

The utility model provides a kind of brake pump air tightness test positioning tool, it is related to positioning tool technical field, including bottom plate, positioning table is set in bottom plate middle, lower pressure cylinder is set in positioning table top, the piston rod of lower pressure cylinder sets boulder, first positioning plate is slidably set around positioning table of bottom plate, the end surface of first positioning plate towards positioning table is slidably set first cylinder, the piston rod of first cylinder sets gas sending rod. When using, brake pump is placed in positioning table, by lower pressure cylinder push boulder and compact brake pump in positioning table, then control first cylinder and push gas sending rod to aim at two oil inlet and outlet columns, gas is filled in brake pump by gas sending rod, and test is completed, first cylinder of the utility model can be adjusted according to the oil inlet and outlet column of different position of brake pump range, so that gas sending rod aims at oil inlet and outlet column, it is suitable for the test of multiple different structures of brake pump, improve practicality.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and more specifically, to a positioning tooling for testing the air tightness of a brake pump. Background Technology

[0002] To ensure the normal operation of the brake pump, the brake pump must undergo an airtightness test after the cylinder, oil cup, and connecting rod are connected to guarantee good sealing performance. Failure to pass the airtightness test will cause oil leakage in the brake pump, leading to brake failure. Typically, brake pump airtightness testing includes low-pressure and high-pressure airtightness testing. Low-pressure airtightness testing is usually conducted at a pressure of 0.175±0.08 kgf / cm², aiming to check whether the installation and fit between the cylinder and seals inside the brake pump meet the sealing requirements under low-pressure conditions. Existing patent: A low-pressure airtightness testing positioning device for a brake pump, patent number: CN220893717U. This device uses a first cylinder and a second cylinder to fix the brake pump on a base before conducting the airtightness test. However, this positioning device can only be used for fixing and testing one type of brake pump; it cannot be used when the inlet and outlet oil column positions of the brake pump are different, resulting in poor practicality. Utility Model Content

[0003] This utility model provides a positioning fixture for testing the air tightness of a brake pump, aiming to solve the technical problems mentioned above.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a positioning fixture for testing the air tightness of a brake pump, comprising a base plate, a positioning platform in the middle of the base plate, a pressing cylinder above the positioning platform, a pressure block on the piston rod of the pressing cylinder, a first positioning plate slidably disposed around the positioning platform on the base plate, a first cylinder slidably disposed on the end face of the first positioning plate facing the positioning platform, and an air delivery rod on the piston rod of the first cylinder.

[0005] Furthermore, the base plate has an annular guide groove around the positioning platform, and the bottom of the first positioning plate is slidably disposed in the annular guide groove.

[0006] Furthermore, the first positioning plate has a vertical guide groove, and the tail of the first cylinder is slidably disposed in the vertical guide groove.

[0007] Furthermore, a second positioning plate is further provided inside the annular guide groove, and the second positioning plate is provided with a plurality of second cylinders, and the piston rod of the second cylinder is provided with a push block.

[0008] Furthermore, positioning posts are further provided on the positioning platform.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model discloses a positioning fixture for testing the airtightness of a brake pump. The fixture has a simple and ingenious design, including a base plate, a positioning platform in the middle of the base plate, a pressing cylinder above the positioning platform, a pressure block on the piston rod of the pressing cylinder, a first positioning plate slidably mounted around the positioning platform on the base plate, and a first cylinder slidably mounted on the end face of the first positioning plate facing the positioning platform. An air delivery rod is mounted on the piston rod of the first cylinder. In use, the brake pump is placed on the positioning platform, and the pressing block is pushed by the pressing cylinder to press the brake pump firmly onto the positioning platform. Then, the first cylinder is controlled to push the air delivery rod to align with the two inlet and outlet oil columns. Gas is then injected into the brake pump through the air delivery rod to complete the test. The first cylinder of this utility model can be adjusted according to the different positions of the inlet and outlet oil columns on the brake pump, ensuring the air delivery rod is aligned with the oil columns. This fixture is suitable for testing various brake pumps with different structures, improving its practicality. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the brake pump structure;

[0013] Figure 2 This is a schematic diagram of the cooperation structure between the brake pump airtightness testing positioning fixture and the brake pump of this utility model;

[0014] Figure 3 This is a schematic diagram of the positioning fixture for testing the air tightness of the brake pump according to this utility model.

[0015] Explanation of main component symbols

[0016] 10. Base plate; 101. Positioning platform; 102. Annular guide groove; 103. First positioning plate; 1031. First cylinder; 1032. Air delivery rod; 104. Second positioning plate; 1041. Second cylinder; 1042. Push block; 105. Pressing cylinder; 1051. Pressing block;

[0017] 20. Brake pump; 201. Inlet and outlet oil columns. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Example

[0022] Reference Figure 1-3As shown, this utility model discloses a positioning fixture for testing the airtightness of a brake pump 20, including a base plate 10, a positioning platform 101 in the middle of the base plate 10, a pressing cylinder 105 above the positioning platform 101, and a pressing block 1051 on the piston rod of the pressing cylinder 105. Specifically, a positioning post is further provided on the positioning platform 101, and the positioning hole of the brake pump 20 is aligned with the positioning post and placed on the positioning platform 101 to achieve rapid positioning. Then, the pressing cylinder 105 is controlled to push the pressing block 1051 to press the brake pump 20 on the positioning platform 101, thereby fixing the brake pump 20. The brake pump 20 is vertically standing on the positioning platform 101, and the vertical downward pressing method makes the fixation more stable.

[0023] Reference Figure 1-3 As shown, a first positioning plate 103 is slidably mounted on the base plate 10 around the positioning platform 101. A first cylinder 1031 is slidably mounted on the end face of the first positioning plate 103 facing the positioning platform 101. An air delivery rod 1032 is mounted on the piston rod of the first cylinder 1031. Specifically, an annular guide groove 102 is formed around the positioning platform 101 on the base plate 10. The bottom of the first positioning plate 103 is slidably mounted on the annular guide groove 102. The first positioning plate 103 can rotate around the positioning platform 101 along the annular guide groove 102 and move to align the air delivery rod 1032 with the inlet and outlet oil columns 201 of the brake pump 20. The first positioning plate 103 is then locked and fixed in the annular guide groove 102. The first cylinder 1031 is controlled to push the air delivery rod 1032 to align with the two inlet and outlet oil columns 201 of the brake pump 20 for subsequent testing operations. The position of the movable first cylinder 1031 can be adjusted to suit the positions of the inlet and outlet oil columns 201 with different orientations, providing flexibility.

[0024] Furthermore, the first positioning plate 103 has a vertical guide groove, and the tail of the first cylinder 1031 is slidably set in the vertical guide groove. The first cylinder 1031 moves up and down vertically along the vertical guide groove to adjust the vertical height of the first cylinder 1031, thereby further adjusting the oil column 201 suitable for different positions and improving practicality.

[0025] Reference Figure 1-3 As shown, a second positioning plate 104 is further provided in the annular guide groove 102. The second positioning plate 104 is provided with a plurality of second cylinders 1041. The piston rod of the second cylinder 1041 is provided with a push block 1042. In this embodiment, the second positioning plate 104 can also be moved to drive the second cylinder 1041 to move and align with the side of the brake pump 20, thereby further fixing the brake pump 20.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning fixture for testing the air tightness of a brake pump, characterized in that; The device includes a base plate, a positioning platform in the middle of the base plate, a pressing cylinder above the positioning platform, a pressure block on the piston rod of the pressing cylinder, a first positioning plate slidably mounted around the positioning platform on the base plate, a first cylinder slidably mounted on the end face of the first positioning plate facing the positioning platform, and an air delivery rod on the piston rod of the first cylinder.

2. The positioning fixture for testing the air tightness of a brake pump according to claim 1, characterized in that: The base plate has an annular guide groove around the positioning platform, and the bottom of the first positioning plate is slidably disposed in the annular guide groove.

3. The positioning fixture for testing the air tightness of a brake pump according to claim 1, characterized in that: The first positioning plate has a vertical guide groove, and the tail of the first cylinder is slidably disposed in the vertical guide groove.

4. The positioning fixture for testing the air tightness of the brake pump according to claim 2, characterized in that: A second positioning plate is further provided inside the annular guide groove. The second positioning plate is provided with a plurality of second cylinders, and the piston rod of the second cylinder is provided with a push block.

5. The positioning fixture for testing the air tightness of a brake pump according to claim 1, characterized in that: Positioning columns are further provided on the positioning platform.

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