Plunger and barrel assembly pressure reduction detection device

Abstract

The utility model discloses a plunger and barrel assembly pressure reduction detection device, and relates to the technical field of plunger and barrel assembly detection devices. The device comprises a workbench, a placing seat, a to-be-detected workpiece, a fixing seat and a detector. The clamping mechanism comprises a first clamping rod, a second clamping rod and a boss. According to the utility model, the clamping mechanism is arranged; through the arrangement of a boss, a to-be-detected workpiece can be preliminarily limited, the situation that the position of the to-be-detected workpiece is deviated after the to-be-detected workpiece is placed at the top end of a placement seat is avoided, the outer wall of the to-be-detected workpiece which is preliminarily limited can be clamped and fixed for the first time through opposite movement of two first clamping rods, and the to-be-detected workpiece can be clamped and fixed for the second time while the first clamping rods move oppositely. The two second clamping rods are driven to move oppositely through mechanical transmission, then the clamped and fixed to-be-detected workpiece is secondarily clamped and fixed, and compared with a traditional mode that the to-be-detected workpiece is fixed through a plurality of bolts, the workload of workers is relieved, and meanwhile the clamping and fixing efficiency of the to-be-detected workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger coupling detection devices, in particular to a plunger coupling pressure reduction detection device. Background Technique

[0002] The working principle of the plunger coupling mainly involves that the plunger realizes the processes of oil suction, oil pumping and oil return under the drive of the camshaft and the action of the plunger spring. The design of the plunger coupling involves the pairing of precision couplings. For example, the clearance between the plunger and the plunger sleeve needs to be strictly controlled to ensure the efficiency and reliability of the fuel system. The delivery valve coupling, as a one-way valve, is used to isolate the high-pressure fuel pipe from the upper cavity of the plunger when the fuel supply stops, preventing the oil in the high-pressure fuel pipe from flowing back into the fuel injection pump. The conventional plunger coupling only includes a plunger sleeve and a plunger core. The sealing performance of the conventional plunger coupling is tested by the pressure reduction pump calibration method.

[0003] When the current plunger coupling is detected, it is necessary to first fix the position of the plunger coupling. At present, the clamping and fixing of the plunger coupling is carried out by a multi-bolt fixing method. When fixing the bolts, corresponding tightening tools are required. The bolts are tightened in turn through the tightening tools, and then the position fixing step of the workpiece to be tested is completed. And after the workpiece is detected, similarly, the bolts need to be disassembled in turn. This process increases the workload of the staff, and the manual installation and disassembly of the bolts is inefficient, thus affecting the detection efficiency of the workpiece to be tested. Therefore, a plunger coupling pressure reduction detection device is provided. Content of the Utility Model

[0004] The purpose of the utility model is to provide a plunger coupling pressure reduction detection device to solve the problems put forward in the above background technique that at present, the plunger coupling is clamped and fixed by multiple bolts, which increases the workload of the staff and reduces the clamping and fixing efficiency of the plunger coupling.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A plunger coupling pressure reduction detection device, including a workbench, a placement seat is fixed on the top of the workbench by bolts, a workpiece to be tested is placed on the top of the placement seat, a fixing seat is fixed on the top of the workbench by bolts, the fixing seat is located on one side of the placement seat, a detector is fixed on the top of the workbench by bolts, the detector is located on one side of the fixing seat; a clamping mechanism, the clamping mechanism is arranged at one end of the fixing seat and extends to one side of the fixing seat, the clamping mechanism is used for clamping and fixing the workpiece to be tested multiple times, so as to facilitate ensuring the stability of the workpiece to be tested during detection. The clamping mechanism includes first clamping rods arranged at both ends of the workpiece to be tested, second clamping rods are arranged at both ends of the workpiece to be tested, the second clamping rods are located above the first clamping rods, and a boss is welded on the top of the placement seat.

[0006] Preferably, the clamping mechanism further includes a driving motor disposed at one end of the fixed seat. The output end of the driving motor is connected to a threaded rod through a coupling. The threaded rod penetrates into the interior of the fixed seat and is rotatably connected to the inner wall of the fixed seat through a bearing.

[0007] Preferably, the bottom end of the driving motor is fixed with a motor seat through bolts, and one end of the motor seat is fixedly connected to the outer wall of the fixed seat through bolts.

[0008] Preferably, one side of the first clamping rod penetrates into the interior of the fixed seat, and the first clamping rod is connected to the threaded rod through a thread.

[0009] Preferably, a first moving groove is formed on one side of the fixed seat, and the first moving groove matches the moving track of the first clamping rod.

[0010] Preferably, a moving block is fixed to the top end of the first clamping rod through bolts. An extrusion block is disposed inside the fixed seat. The extrusion block is located at one end of the moving block, and the extrusion block and the moving block are at the same horizontal height.

[0011] Preferably, the top end of the extrusion block is fixedly connected to the bottom end of the second clamping rod through bolts. One side of the second clamping rod penetrates into the interior of the fixed seat. A second moving groove that matches the moving track of the second clamping rod is formed on one side of the fixed seat.

[0012] Preferably, a fixing column is sleeved inside the second clamping rod. Both ends of the fixing column are fixedly connected to the inner wall of the fixed seat through bolts. One end of the second clamping rod is fixedly connected to a spring. The spring is sleeved outside the fixing column, and the other end of the spring is fixedly connected to the inner wall of the fixed seat.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By providing the clamping mechanism; through the setting of the boss, the workpiece to be measured can be preliminarily limited, avoiding the situation of position deviation after the workpiece to be measured is placed on the top of the placement seat. By the two first clamping rods moving towards each other, the outer wall of the preliminarily limited workpiece to be measured can be clamped and fixed for the first time. And when the two first clamping rods move towards each other, the two second clamping rods are driven to move towards each other through mechanical transmission, thereby clamping and fixing the workpiece to be measured for the second time. Compared with the traditional method of fixing the workpiece to be measured with multiple bolts, the workload of the staff is reduced, and at the same time, the efficiency of clamping and fixing the workpiece to be measured is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2Schematic diagram of the internal structure of the fixing seat of the present utility model;

[0017] Figure 3 Of the present utility model Figure 2 Schematic diagram of the enlarged structure at position A in;

[0018] Figure 4 Schematic diagram of the internal structure of the fixing seat of the present utility model from another perspective;

[0019] Figure 5 Of the present utility model Figure 4 Schematic diagram of the enlarged structure at position B in.

[0020] In the figure: 1, workbench; 101, detector; 2, placement seat; 201, boss; 3, fixing seat; 4, clamping mechanism; 401, driving motor; 4011, motor seat; 402, threaded rod; 403, first clamping rod; 404, moving block; 405, extrusion block; 406, second clamping rod; 407, fixed column; 408, spring; 5, workpiece to be measured. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] The following is in conjunction with the attached Figures 1 - 5 A further detailed description of the present utility model will be given.

[0023] Please refer to Figures 1 - 5, An embodiment of a plunger pair pressure reduction detection device provided by the present utility model: A plunger pair pressure reduction detection device includes a workbench 1. A placement seat 2 is fixed to the top of the workbench 1 by bolts. A workpiece to be tested 5 is placed on the top of the placement seat 2. The placement seat 2 is used to place and support the workpiece to be tested 5. A fixed seat 3 is fixed to the top of the workbench 1 by bolts. The fixed seat 3 is located on one side of the placement seat 2. A detector 101 is fixed to the top of the workbench 1 by bolts. The detector 101 is located on one side of the fixed seat 3. The detector 101 is used to detect the workpiece to be tested 5 after placement; A clamping mechanism 4 is arranged at one end of the fixed seat 3, and the clamping mechanism 4 extends to one side of the fixed seat 3. The clamping mechanism 4 is used to clamp and fix the workpiece to be tested 5 multiple times, thereby facilitating ensuring the stability of the workpiece to be tested 5 during detection. The clamping mechanism 4 includes first clamping rods 403 arranged at both ends of the workpiece to be tested 5. Second clamping rods 406 are arranged at both ends of the workpiece to be tested 5. The second clamping rods 406 are located above the first clamping rods 403. A boss 201 is welded to the top of the placement seat 2. The boss 201 is used to preliminarily limit the workpiece to be tested 5. The first clamping rods 403 and the second clamping rods 406 are used to clamp the outer wall of the workpiece to be tested 5, thereby facilitating the subsequent detection of the workpiece to be tested 5;

[0024] The clamping mechanism 4 further includes a driving motor 401 arranged at one end of the fixed seat 3. The output end of the driving motor 401 is connected to a threaded rod 402 through a coupling. The threaded rod 402 penetrates into the interior of the fixed seat 3. The threaded rod 402 is rotatably connected to the inner wall of the fixed seat 3 through a bearing. The rotation of the output end of the driving motor 401 can drive the threaded rod 402 to rotate; The bottom end of the driving motor 401 is fixed to the outer wall of the fixed seat 3 by bolts. One end of the motor seat 4011 is fixed to the outer wall of the fixed seat 3 by bolts. The motor seat 4011 is used to support the driving motor 401, and the motor seat 4011 is used to ensure the stability of the driving motor 401 during operation; One side of the first clamping rod 403 penetrates into the interior of the fixed seat 3, and the first clamping rod 403 is connected to the threaded rod 402 through a thread. The rotation of the threaded rod 402 can drive the first clamping rod 403 to move. By moving the two first clamping rods 403 towards each other, the outer wall of the workpiece to be tested 5 can be clamped; A first moving groove is formed on one side of the fixed seat 3. The first moving groove matches the moving track of the first clamping rod 403. The first moving groove ensures the stability of the horizontal movement of the first clamping rod 403. And the setting of the first moving groove prevents the moving first clamping rod 403 from detaching from the fixed seat 3;

[0025] The top end of the first clamping rod 403 is fixed with a moving block 404 through a bolt. An extrusion block 405 is arranged inside the fixed seat 3. The extrusion block 405 is located at one end of the moving block 404, and the extrusion block 405 and the moving block 404 are at the same horizontal height. The horizontal movement of the first clamping rod 403 can drive the movement of the moving block 404. When the moving block 404 moves and contacts one end of the extrusion block 405, the extrusion block 405 can be pushed to move horizontally. The top end of the extrusion block 405 is fixedly connected to the bottom end of the second clamping rod 406 through a bolt. One side of the second clamping rod 406 penetrates into the inside of the fixed seat 3. A second moving groove matching the movement track of the second clamping rod 406 is opened on one side of the fixed seat 3. The movement of the extrusion block 405 can drive the movement of the second clamping rod 406. The second moving groove is used to ensure the stability of the second clamping rod 406 during horizontal movement, and the setting of the second moving groove prevents the moving second clamping rod 406 from detaching from the fixed seat 3. A fixed column 407 is sleeved inside the second clamping rod 406. Both ends of the fixed column 407 are fixedly connected to the inner wall of the fixed seat 3 through bolts. One end of the second clamping rod 406 is fixedly connected with a spring 408. The spring 408 is sleeved outside the fixed column 407. The other end of the spring 408 is fixedly connected to the inner wall of the fixed seat 3. The fixed column 407 is used to support the second clamping rod 406, and the spring 408 is used to maintain the initial position of the second clamping rod 406 and provide a restoring force for the second clamping rod 406 to move in the horizontal direction.

[0026] Working principle: First, place the workpiece 5 to be measured on the top end of the boss 201, and then align the bottom end of the workpiece 5 to be measured with the top end of the placing seat 2. Then control the driving motor 401 to work. The rotation of the output end of the driving motor 401 can drive the rotation of the threaded rod 402. The rotation of the threaded rod 402 can drive the two first clamping rods 403 to move towards each other, and the two first clamping rods 403 move towards each other and clamp the outer wall of the workpiece 5 to be measured.

[0027] Secondly, while the two first clamping rods 403 move horizontally towards each other, they also drive the movement of the moving block 404. The moving block 404 moves and contacts one end of the extrusion block 405, thereby pushing the extrusion block 405 to move. The movement of the extrusion block 405 drives the movement of the second clamping rod 406. The second clamping rod 406 moves towards the outer wall of the workpiece 5 to be measured. At this time, the two second clamping rods 406 move towards each other and are in extrusion contact with the outer wall of the workpiece 5 to be measured.

[0028] Finally, through the setting of the boss 201, the workpiece 5 to be measured can be preliminarily positioned, avoiding the situation of position deviation after the workpiece 5 to be measured is placed on the top of the placement seat 2. By moving the two first clamping rods 403 towards each other, the outer wall of the preliminarily positioned workpiece 5 to be measured can be clamped and fixed for the first time. And when the two first clamping rods 403 move towards each other, the two second clamping rods 406 are driven to move towards each other through mechanical transmission, so as to clamp and fix the workpiece 5 to be measured for the second time. Compared with the traditional method of fixing the workpiece 5 to be measured by multiple bolts, the workload of the staff is reduced, and at the same time, the clamping and fixing efficiency of the workpiece 5 to be measured is improved.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed invention.

Claims

1. A plunger pair pressure drop detection device, characterized in that: include: A workbench (1), wherein a placement seat (2) is fixed to the top of the workbench (1) by bolts, a workpiece (5) to be measured is placed on the top of the placement seat (2), a fixing seat (3) is fixed to the top of the workbench (1) by bolts, the fixing seat (3) is located on one side of the placement seat (2), and a detector (101) is fixed to the top of the workbench (1) by bolts, the detector (101) is located on one side of the fixing seat (3); A clamping mechanism (4), wherein the clamping mechanism (4) is arranged at one end of the fixed seat (3), and the clamping mechanism (4) extends to one side of the fixed seat (3), the clamping mechanism (4) comprises a first clamping rod (403) arranged at both ends of the workpiece (5) to be measured, and second clamping rods (406) are arranged at both ends of the workpiece (5) to be measured, and the second clamping rod (406) is located above the first clamping rod (403), and a boss (201) is welded to the top end of the placement seat (2).

2. A plunger pair pressure drop detection device according to claim 1, characterized in that: The clamping mechanism (4) further comprises a driving motor (401) arranged at one end of the fixing seat (3); the output end of the driving motor (401) is connected to a threaded rod (402) via a coupling; the threaded rod (402) penetrates into the interior of the fixing seat (3); and the threaded rod (402) is rotatably connected to the inner wall of the fixing seat (3) via a bearing.

3. A plunger pair pressure drop detection device according to claim 2, characterized in that: The bottom end of the driving motor (401) is fixed with a motor seat (4011) by means of bolts, and one end of the motor seat (4011) is fixedly connected to the outer wall of the fixing seat (3) by means of bolts.

4. A plunger pair pressure drop detection device according to claim 3, characterized in that: One side of the first clamping rod (403) penetrates into the interior of the fixing seat (3), and the first clamping rod (403) is connected to the threaded rod (402) via a thread.

5. A plunger pair pressure drop detection device according to claim 4, characterized in that: A first moving groove is provided on one side of the fixing seat (3), and the first moving groove matches the moving track of the first clamping rod (403).

6. A plunger pair pressure drop detection device according to claim 5, characterized in that: A moving block (404) is fixed to the top end of the first clamping rod (403) by means of bolts, and an extrusion block (405) is arranged inside the fixing seat (3). The extrusion block (405) is located at one end of the moving block (404), and the extrusion block (405) and the moving block (404) are at the same level.

7. A plunger pair pressure drop detection device according to claim 6, characterized in that: The top end of the extrusion block (405) is fixedly connected to the bottom end of the second clamping rod (406) by means of bolts, one side of the second clamping rod (406) penetrates into the interior of the fixing seat (3), and one side of the fixing seat (3) is provided with a second moving groove matching the moving trajectory of the second clamping rod (406).

8. A plunger pair pressure drop detection device according to claim 7, characterized in that: A fixing column (407) is sleeved inside the second clamping rod (406), and both ends of the fixing column (407) are fixedly connected to the inner wall of the fixing seat (3) by bolts. One end of the second clamping rod (406) is fixedly connected to a spring (408), and the spring (408) is sleeved outside the fixing column (407), and the other end of the spring (408) is fixedly connected to the inner wall of the fixing seat (3).

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