Finished product detection device for hydraulic joint

By designing a synchronous clamping and airtightness testing mechanism, the problems of low testing efficiency and unstable clamping in existing hydraulic joint finished product testing devices have been solved, enabling efficient and accurate testing of multiple sets of hydraulic joints.

CN224136797UActive Publication Date: 2026-04-17TENGZHOU ZHONGLIAN HEAVY IND MASCH TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TENGZHOU ZHONGLIAN HEAVY IND MASCH TECH CO LTD
Filing Date
2025-05-09
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing hydraulic joint finished product testing devices have low testing efficiency, cannot test multiple joints simultaneously, and unstable clamping affects testing accuracy.

Method used

A detection device including a synchronous clamping mechanism and an airtightness detection mechanism was designed. The clamping cavity is constructed by the upper and lower clamps, and the stable clamping of multiple hydraulic joints is achieved by combining elastic springs and rotatable pivots. The airtightness detection is achieved by sealing the airtightness detector with the detection head.

Benefits of technology

It enables simultaneous testing of multiple hydraulic joints, improving testing efficiency and accuracy, and ensuring the fixation of joint positions and the precision of airtightness testing during the testing process.

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Abstract

The utility model discloses a finished product detection device for a hydraulic joint, which comprises a detection table, and a synchronous clamping mechanism and an air tightness detection mechanism are arranged on the detection table. The synchronous clamping mechanism comprises an upper clamping piece and a lower clamping piece which are arranged on the detection table, a clamping cavity is formed between the upper clamping piece and the lower clamping piece, one end of the upper clamping piece is connected with an elastic spring installed on the detection table, the upper clamping piece is arranged in a state of inclining towards the front end, and the other end of the upper clamping piece is connected with the clamping cavity. The upper clamping piece is rotatably connected by means of a pivot; through the synchronous clamping mechanism, multiple sets of hydraulic joints can be clamped at the same time, compared with a traditional single detection mode, the multiple hydraulic joints can be detected at the same time, the detection period is greatly shortened, in addition, an elastic spring at one end of the upper clamping piece and a pivot in rotatable connection are matched, a hydraulic joint body can be stably clamped, and the detection efficiency is improved. The joint position is fixed in the detection process, and the detection accuracy is improved.
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Description

Technical Field

[0001] This utility model relates to the field of hydraulic joint testing technology, and in particular to a finished product testing device for hydraulic joints. Background Technology

[0002] The finished product testing device for hydraulic joints is a specialized device for comprehensive quality testing of finished hydraulic joints, designed to ensure that the hydraulic joints meet relevant standards and performance requirements before being put into use.

[0003] Currently, existing hydraulic joint finished product testing devices on the market have many shortcomings. Most testing devices can only test a single hydraulic joint at a time, which leads to low testing efficiency. Especially when facing the needs of large-scale production, they cannot meet the requirements of rapid testing, which greatly increases production time and costs. In addition, some testing devices usually use positioning grooves, but positioning grooves cannot firmly fix hydraulic joints. During the testing process, they are prone to loosening or displacement, which affects the accuracy of the test results.

[0004] Therefore, we provide a finished product testing device for hydraulic joints. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned technical problems by providing a finished product testing device for hydraulic joints. This device can simultaneously test multiple sets of hydraulic joints, has high testing efficiency, and provides secure clamping, thus solving the problems of low testing efficiency, unstable clamping, and inaccurate testing found in existing testing devices.

[0006] In view of this, the present invention provides a finished product testing device for hydraulic joints, including a testing table, wherein the testing table is provided with a synchronous clamping mechanism and an airtightness testing mechanism;

[0007] The synchronous clamping mechanism includes an upper clamp and a lower clamp on the testing table, and a clamping cavity is formed between the upper clamp and the lower clamp. One end of the upper clamp is connected to an elastic spring installed on the testing table. The upper clamp is arranged in a state of tilting towards the front end, and the upper clamp is rotatably connected by a pivot.

[0008] The airtightness testing mechanism includes an airtightness detector, which is connected to the testing head via an air tube.

[0009] Preferably, the pivot is mounted on a T-shaped structural plate, the T-shaped structural plate having pre-drilled screw holes, and the T-shaped structural plate is mounted on the testing platform via screw holes and bolts.

[0010] Preferably, the clamping cavity formed between the upper clamp and the lower clamp can stably clamp the hydraulic connector body.

[0011] Preferably, the port portion of the detection head is provided with a rubber sealing sheet, which can seal the port of the hydraulic connector body.

[0012] Preferably, the testing platform is further provided with an auxiliary testing mechanism, which includes a horizontal rod. The air tube and the testing head array form a through horizontal rod. The horizontal rod is mounted on an adjusting block. The adjusting block passes through a screw. The screw is connected to a control motor at one end.

[0013] Preferably, a stud extends below the transverse rod, and a screw cavity is provided on the adjusting block. The transverse rod is installed in the screw cavity of the adjusting block in a spiral manner via the stud.

[0014] Preferably, the testing platform is equipped with a controller, which can be electrically connected to the airtightness detector and the control motor.

[0015] Compared with the prior art, this utility model provides a finished product testing device for hydraulic joints, which has the following beneficial effects:

[0016] 1. This utility model, through the set synchronous clamping mechanism, can clamp multiple sets of hydraulic joints at the same time. Compared with the traditional single detection method, it can detect multiple hydraulic joints at the same time, which greatly shortens the detection cycle. In addition, with the elastic spring at one end of the clamp and the pivot that can be rotatably connected, it can stably clamp the hydraulic joint body, ensure that the joint position is fixed during the detection process, and improve the detection accuracy.

[0017] 2. This utility model uses an air tightness testing mechanism to connect the air tightness detector and the testing head through an air pipe. The testing head port has a rubber sealing sheet that can seal the main port of the hydraulic connector, thereby achieving efficient and accurate air tightness testing and ensuring the quality of the hydraulic connector.

[0018] 3. In this utility model, the auxiliary testing mechanism includes an adjustable horizontal bar. Through the adjustment block, screw and control motor, the positions of multiple sets of testing heads are adjusted synchronously, thereby enabling the simultaneous testing of multiple hydraulic joints and greatly improving testing efficiency.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is an overall diagram of a finished product testing device for hydraulic joints proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the synchronous clamping mechanism of a finished product testing device for hydraulic joints proposed in this utility model.

[0022] Figure 3 This is a schematic diagram of the airtightness testing mechanism of a finished product testing device for hydraulic joints proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the horizontal rod installation structure of a finished product testing device for hydraulic joints proposed in this utility model.

[0024] In the diagram: 1. Testing platform; 2. Synchronous clamping mechanism; 21. Upper clamp; 211. Elastic spring; 22. Lower clamp; 23. Clamping cavity; 24. T-shaped structure plate; 25. Pivot; 3. Air tightness detector; 31. Air tube; 32. Testing head; 33. Rubber sealing sheet; 4. Horizontal rod; 41. Stud; 42. Adjusting block; 421. Screw cavity; 43. Screw; 44. Control motor; 45. Controller; 5. Hydraulic connector body. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1: A finished product testing device for hydraulic joints, such as... Figures 1-4 As shown, it includes a testing platform 1, on which a synchronous clamping mechanism 2 and an airtightness testing mechanism are provided;

[0028] The synchronous clamping mechanism 2 includes an upper clamp 21 and a lower clamp 22 disposed on the testing table 1. A clamping cavity 23 is formed between the upper clamp 21 and the lower clamp 22. One end of the upper clamp 21 is connected to an elastic spring 211 installed on the testing table 1. The upper clamp 21 is arranged in an inclined state towards the front end, and the upper clamp 21 is rotatably connected by a pivot 25.

[0029] The air tightness testing mechanism includes an air tightness detector 3, which is connected to the testing head 32 via an air tube 31.

[0030] In use, the hydraulic connector body 5 is placed into the clamping cavity 23 formed between the upper clamp 21 and the lower clamp 22. Since one end of the upper clamp 21 is connected to the testing table 1 via an elastic spring 211 and is arranged in a forward-leaning position and rotatably connected by a pivot 25, multiple sets of upper clamps 21 will adaptively conform to the hydraulic connector body 5 under the action of the elastic spring 211, thereby stably clamping multiple sets of hydraulic connector bodies 5 in the clamping cavity 23. The rubber sealing sheet 33 at the port of the testing head 32 is aligned with the port of the hydraulic connector body 5, and the testing head 32 is slowly pushed to make the rubber sealing sheet 33 tightly conform to the port of the hydraulic connector body 5, thus completing the sealing operation. At this point, the air tube 31 connects the detection head 32 and the air tightness detector 3, and the air tightness detection path has been established. Then, the air tightness detector 3 is activated, and the air tightness detector 3 delivers gas to the detection head 32 through the air tube 31. The detection head 32 introduces the gas into the hydraulic connector body 5. The air tightness detector 3 monitors parameters such as gas pressure changes in real time to determine whether the air tightness of the hydraulic connector body 5 meets the standard. After the air tightness test is completed, the air tightness detector 3 is turned off, the detection head 32 is removed from the port of the hydraulic connector body 5, the pivot 25 is rotated, and its multiple sets of upper clamps 21 are rotated and lifted to release the clamps on the hydraulic connector body 5. The tested hydraulic connector can then be taken out.

[0031] like Figures 1-4 As shown, the pivot 25 is mounted on the T-shaped structural plate 24, which has pre-drilled screw holes. The T-shaped structural plate 24 is mounted on the testing table 1 through the screw holes and bolts. The T-shaped structural plate 24 provides stable support for the pivot 25, ensuring that the pivot 25 can be kept in the right position, making the rotation of the upper clamp 21 around the pivot 25 more stable and accurate.

[0032] like Figures 1-4 As shown, a rubber sealing sheet 33 is provided at the port of the detection head 32. The rubber sealing sheet 33 can seal the port of the hydraulic connector body 5. When performing air tightness testing, the rubber sealing sheet 33 can form a tight sealing connection between the detection head 32 and the port of the hydraulic connector body 5 to prevent gas leakage, thereby improving the accuracy of the test.

[0033] Example 2: A finished product testing device for hydraulic joints, such as... Figures 1-4 As shown, the testing platform 1 is also equipped with an auxiliary testing mechanism. The auxiliary testing mechanism includes a horizontal rod 4. The air pipe 31 and the testing head 32 are arrayed to form a through-bar on the horizontal rod 4. The air pipe 31 and the testing head 32 are firmly installed on the horizontal rod 4. The horizontal rod 4 is installed on the adjusting block 42. The adjusting block 42 is connected to the screw 43. The screw 43 is connected to the control motor 44 at one end.

[0034] A stud 41 extends below the horizontal rod 4, and a screw cavity 421 is provided on the adjusting block 42. The horizontal rod 4 is installed in the screw cavity 421 of the adjusting block 42 by means of the stud 41.

[0035] The testing station 1 is equipped with a controller 45, which can be electrically connected to the airtightness detector 3 and the control motor 44.

[0036] In use, the controller 45 sends a start command to the control motor 44 according to the preset target position parameters of the detection head 32. The control motor 44 starts to run, driving the screw 43 connected to it to rotate. Since the adjusting block 42 and the screw 43 are interpenetrating, the rotational motion of the screw 43 is converted into the linear motion of the adjusting block 42 along the axis of the screw 43. The adjusting block 42 then drives the transverse rod 4 installed above it to move towards the hydraulic connector body 5. After multiple sets of detection heads 32 are inserted into the hydraulic connector body 5, until the rubber sealing sheet 33 at the end of the detection head 32 is in close contact with the hydraulic connector body 5, the rotation of the screw 43 stops. Then, the controller 45 can start multiple sets of air tightness detectors 3. Through the centralized control of the controller 45, multiple sets of detection heads 32 can move and be inserted into the hydraulic connector body 5 at the same time. Compared with detection one by one, the detection efficiency is greatly improved. Among them, the air tightness detector 3, the control motor 44, and the controller 45 are all existing mature products, and the centralized control technology is also an existing mature connection technology, which will not be described in detail here.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A finished product testing device for hydraulic joints, comprising a testing table (1), wherein the testing table (1) is provided with a synchronous clamping mechanism (2) and an airtightness testing mechanism, characterized in that: The synchronous clamping mechanism (2) includes an upper clamp (21) and a lower clamp (22) disposed on the testing table (1). A clamping cavity (23) is formed between the upper clamp (21) and the lower clamp (22). One end of the upper clamp (21) is connected to an elastic spring (211) installed on the testing table (1). The upper clamp (21) is arranged in a state of inclination towards the front end, and the upper clamp (21) is rotatably connected by a pivot (25). The airtightness testing mechanism includes an airtightness detector (3), which is connected to the testing head (32) via an air tube (31).

2. The apparatus for detecting a finished product of a hydraulic fitting according to claim 1, wherein The pivot (25) is mounted on the T-shaped structure plate (24), which has pre-drilled screw holes. The T-shaped structure plate (24) is mounted on the testing table (1) through the screw holes and bolts.

3. The apparatus for detecting a finished product of a hydraulic fitting according to claim 1, wherein The clamping cavity (23) formed between the upper clamp (21) and the lower clamp (22) can stably clamp the hydraulic connector body (5).

4. The apparatus for detecting a finished product of a hydraulic fitting according to claim 1, wherein The port of the detection head (32) is provided with a rubber sealing sheet (33), which can seal the port of the hydraulic connector body (5).

5. The apparatus for detecting a finished product of a hydraulic fitting according to claim 1, wherein The testing platform (1) is also provided with an auxiliary testing mechanism, which includes a horizontal rod (4). The air tube (31) and the testing head (32) are arrayed to form a through horizontal rod (4). The horizontal rod (4) is installed on the adjusting block (42). The adjusting block (42) is connected to the screw (43). The screw (43) is connected to the control motor (44) at one end.

6. The apparatus for detecting a finished product of a hydraulic fitting according to claim 5, wherein A stud (41) extends below the horizontal rod (4), and a screw cavity (421) is provided on the adjusting block (42). The horizontal rod (4) is installed in the screw cavity (421) of the adjusting block (42) in a spiral manner through the stud (41).

7. The apparatus for detecting a finished product of a hydraulic fitting according to claim 1, wherein The testing platform (1) is equipped with a controller (45), which can be electrically connected to the airtightness detector (3) and the control motor (44).