Reciprocating motion sealing test device convenient to assemble and disassemble

Abstract

The invention discloses a reciprocating motion sealing test device convenient to assemble and disassemble, relates to a sealing mechanism test device, and aims to solve the problem that a moving shaft which moves relative to a tested object needs to be frequently disassembled and assembled in the conventional sealing performance test equipment to cause damage influence. And a traditional sealing test device is complex to assemble and disassemble, inconvenient to operate and low in test efficiency. The device comprises a moving shaft support, a moving shaft, a sensor, an electric cylinder, a bottom plate, a V-shaped block, a pull rod, a supporting pad, a supporting cover, a nut and the like. The device is used for sealing mechanism tests.

Description

Technical Field

[0001] The invention relates to a sealing mechanism testing device, in particular to a reciprocating motion sealing testing device which is convenient for assembly and disassembly. Background Art

[0002] In the field of industrial applications, the application scope of reciprocating sealing mechanisms is very common. The performance of the sealing ring in reciprocating motion directly affects the service life of the moving pair and the effective function. Especially under extreme working conditions, such as high temperature, high pressure, high speed environment, as well as special and harsh conditions such as space, deep sea, and extreme cold, the performance of the sealing ring has become a key factor in determining whether the equipment can operate stably and durably. In view of the importance of sealing rings in various complex environments, scientific researchers continue to optimize and innovate the structural design and material selection of sealing rings and their supporting moving pairs, aiming to meet the stringent requirements of these special conditions and environments on the performance of sealing rings. This series of optimizations and innovations naturally gave rise to the need for performance testing of these new materials and new technologies.

[0003] Among the many methods of performance testing, using a reciprocating seal test bench to test the performance indicators of the seal ring is a widely recognized and effective means. However, during this test process, the moving shaft that has relative motion with the test object often needs to be frequently disassembled and installed. During the installation and disassembly of the moving shaft, ensuring that the shaft itself and the seat on which it is installed will not be damaged in any form is an important prerequisite for ensuring that the reciprocating seal test bench can operate stably for a long time and ensure the accuracy and reliability of the test results. Therefore, it is very necessary to develop a reciprocating seal test bench that is easy to assemble and disassemble. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in existing sealing performance testing equipment that a moving shaft that has relative motion with a test object needs to be frequently disassembled and installed, causing damage, and that traditional sealing testing devices are complicated to assemble and disassemble, inconvenient to operate, and have low testing efficiency, thereby providing a reciprocating sealing test device that is easy to assemble and disassemble.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problems is: a reciprocating seal test device with convenient assembly and disassembly of the present invention is characterized in that: it includes a test piece module, a motor module, a replacement module, and a base plate; the test piece module includes a movable shaft support, a movable shaft, a sensor, and a sensor joint; the motor module includes a servo motor, an electric cylinder, and a motor bracket; the replacement module includes a nut, a support pad, a support cover, a pull rod, and a V-block.

[0006] The movable shaft support and the electric cylinder are installed on the bottom plate, the movable shaft is constrained in the movable shaft support, one end of the movable shaft is provided with a stud, and is connected to the sensor. The other end of the sensor is connected to the electric cylinder push rod. The force of the electric cylinder acts on the movable shaft through the sensor connector and the sensor, and the movable shaft reciprocates back and forth in the hole of the movable shaft support.

[0007] When the old test object needs to be disassembled, use the force of the electric cylinder to pull the moving shaft out to the limit position, place a V-block under the moving shaft, loosen the sensor connector and remove the electric cylinder, and tap the end face of the moving shaft axially with a wooden stick (or non-metallic stick). After the moving shaft completely leaves the moving shaft support, take out the test pieces (sealing rings) at both ends of the shaft hole, and then place the new test piece.

[0008] When a new test object needs to be installed, push the moving shaft to the edge of the hole of the moving shaft support, place the support cover on the other end of the moving shaft support, screw the stud of the pull rod into the screw hole of the moving shaft, put the support pad on the stud at the other end of the pull rod, screw the nut to slowly pull the moving shaft into the shaft hole of the moving shaft support, and continue to pull the moving shaft to the second test object after the moving shaft passes the first test object. Remove the V-block, restore the electric cylinder, and continue the next test. Because the V-block can ensure that the moving shaft and the moving shaft support hole are concentric, the machine parts will not be damaged during the disassembly process.

[0009] The beneficial effects of the present invention are as follows: the test bench of the present invention not only simplifies the assembly and disassembly process of the moving shaft and reduces the workload of operators by adopting a modular structure and an intelligent operation mechanism, but also greatly improves the versatility and scalability of the test bench, so that it can adapt to the testing needs of multiple batches of sealing rings. In addition, the precise coordination between the electric cylinder and the sensor ensures that the moving shaft can achieve stable and reliable reciprocating motion during the test, thereby improving the accuracy and repeatability of the test results. After the test, the auxiliary pulling force of the electric cylinder and the ingenious design of the V-block provide great convenience for the rapid disassembly and reinstallation of the moving shaft, greatly shortening the time for test preparation and cleaning and improving the test efficiency. This innovative design not only reduces the test cost, but also improves the long-term operating stability and service life of the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 It is a schematic diagram of the test piece module structure.

[0012] Figure 3 It is a schematic diagram of the motor module structure.

[0013] Figure 4 It is a schematic diagram of the replacement module structure. DETAILED DESCRIPTION Embodiment 1

[0014] Figure 1 , Figure 2 , Figure 3 , Figure 4 It is shown that a specific embodiment of the present invention is: a reciprocating seal test device that is easy to assemble and disassemble, comprising a test piece module (1), a motor module (2), a replacement module (3), and a base plate (4); the test piece module (1) includes a movable shaft support (1-1), a movable shaft (1-2), a sensor (1-3), and a sensor connector (1-4); the motor module includes a servo motor (2-1), an electric cylinder (2-2), and a motor bracket (2-3); the replacement module includes a nut (3-1), a support pad (3-2), a support cover (3-3), a pull rod (3-4), and a V-block (3-5). During the test, the base plate (4) is fixed to the ground, and the servo motor (2-1) fixed to the motor bracket (2-3) drives the electric cylinder (2-2) to reciprocate. On the one hand, since the end of the electric cylinder (2-2) shaft is connected to the sensor connector (1-4), and the two ends of the sensor (1-3) are respectively connected to the sensor connector (1-4) and the movable shaft (1-2), the movable shaft (1-2) reciprocates with the electric cylinder (2-2) during the test. On the other hand, since the movable shaft support (1-1) is fixed on the bottom plate (4), the movable shaft (1-2) and the movable shaft support (1-1) generate reciprocating relative motion. With such an arrangement, the sealing effect test can be performed on the test object (sealing ring) between the movable shaft (1-2) and the movable shaft support (1-1).

[0015] When a new test object needs to be replaced, the old test object and the moving shaft (1-2) should be removed. Step 1: Control the electric cylinder (2-2) to retract to the shortest extension state, so that the moving shaft (1-2) extends out of the moving shaft support (1-1) to the maximum length. At this time, disconnect the connection between the end of the electric cylinder (2-2) and the sensor connector (1-4), and remove the motor module (2) from the base plate (4); Step 2: Disconnect the connection between the moving shaft (1-2) and the sensor (1-3) of the old test object, remove the sensor (1-3) and the sensor connector (1-4) and place them properly; Step 3: Pull out the moving shaft (1-2) from the moving shaft support (1-1) fixed on the base plate (4) in the direction where the moving shaft (1-2) is exposed longer, and remove the corresponding sealing ring. At this point, the old test object has been disassembled.

[0016] Before installing the new test object, the movable shaft support (1-1) and the movable shaft (1-2) should be cleaned to avoid adverse effects on the sealing test. After cleaning, install the new test object. Step 1: Press Figure 4The V-shaped block (3-5) is installed on the bottom plate (4) at a certain position, a new test object is placed on the corresponding position of the moving shaft support (1-1), and the moving shaft (1-2) is placed on the V-shaped block (3-5). The second step: screw the nut (3-1) into the corresponding thread on one side of the pull rod (3-4) (not too deep, the screwing depth is about twice the thickness of the nut), and pass the pull rod (3-4) through the support cover (3-3) and the support pad (3-2) in sequence, and pass it out along the axis direction of the movable shaft support (1-1) from the side where the V-block (3-5) is not placed; the third step: connect one end of the pull rod (3-4) passing through the movable shaft support (1-1) to the corresponding position of the movable shaft (1-2), and continue to tighten the nut (3-1). Due to the constraints of the support cover (3-3) and the support pad (3-2), the movable shaft (1-2) will pass into the movable shaft support (1-1); the fourth step: remove the pull rod (3-4), the support cover (3-3) and the support pad (3-2), and slowly push the movable shaft (1-2) into the movable shaft support (1-1) from the other side to a suitable position, and remove the V-block (3-5). Step 5: Connect the moving shaft (1-2) and the sensor (1-3), install the motor module (2) at the corresponding position on the base plate (4), and connect the end of the electric cylinder (2-2) shaft to the sensor connector (1-4). At this point, the new test object is installed. Embodiment 2

[0017] The sensor (1-3) is connected between the moving shaft (1-2) and the electric cylinder (2-2) and is located on the same axis. During the test, the sensor (1-3) can correctly monitor the axial force between the electric cylinder (2-2) and the moving shaft (1-2) when the two reciprocate, and use the force as important test data for the sealing test.

[0018] When installing a new test object moving shaft (1-2), using a V-block (3-5) can ensure that the moving shaft (1-2), the pull rod (3-4) and the moving shaft support (1-1) are located on the same axis, and the rest is the same as above.

[0019] When installing the new test object moving shaft (1-2), the moving shaft (1-2) is pulled into the moving shaft support (1-1) by tightening the nut (3-1) through the pull rod (3-4), and the rest is the same as above. Such an arrangement ensures the correctness of the installation direction and the direction of the force applied during installation, and avoids the damage to the new test object moving shaft (1-2) during installation to the greatest extent, while making the installation process more convenient, labor-saving and easy to control. How it works

[0020] Combination Figure 1-Figure 4Description: The present invention uses the force of the electric cylinder to act on the moving shaft through the joint and the sensor, so that the moving shaft reciprocates in the hole of the moving shaft support; when installing a new test piece, the moving shaft is placed on the V-block and slowly inserted into the hole of the moving shaft support through the pull rod. Since the V-block can ensure that the moving shaft and the hole of the moving shaft support are concentric, the parts will not be damaged during the disassembly process, thereby ensuring that the test bench can work reliably for a long time. In this way, the rapid assembly and disassembly of the sealing test can be achieved.

Claims

1. A sealing test device with reciprocating motion function and convenient assembly and disassembly, characterized in that: It comprises a test piece module (1), a motor module (2), a replacement module (3), and a base plate (4); the test piece module (1) comprises a movable shaft support (1-1), a movable shaft (1-2), a sensor (1-3), and a sensor connector (1-4); the motor module comprises a servo motor (2-1), an electric cylinder (2-2), and a motor bracket (2-3); and the replacement module comprises a nut (3-1), a support pad (3-2), a support cover (3-3), a pull rod (3-4), and a V-shaped block (3-5).

2. A reciprocating seal test device that is easy to assemble and disassemble according to claim 1, characterized in that: The movable shaft support (1-1) and the electric cylinder (2-2) are installed on a base plate (4), the movable shaft (1-2) is constrained in the movable shaft support (1-1), one end of the movable shaft (1-2) is provided with a stud connected to the sensor (1-3). The other end of the sensor (1-3) is connected to the push rod of the electric cylinder (2-2). The force of the electric cylinder (2-2) acts on the movable shaft (1-2) through the sensor connector (1-4) and the sensor (1-3), and the movable shaft (1-2) reciprocates back and forth in the hole of the movable shaft support (1-1).

3. A reciprocating seal test device that is easy to assemble and disassemble according to claim 1 or 2, characterized in that: The movable shaft (1-2) is pulled out to the limit position by utilizing the force of the electric cylinder (2-2), and a V-shaped block (3-5) is placed under the movable shaft (1-2). The sensor connector (1-4) is loosened and the electric cylinder (2-2) is removed. The end face of the movable shaft (1-2) is tapped axially with a wooden stick (or a non-metallic stick). After the movable shaft 2 completely leaves the movable shaft support (1-1), the test pieces (sealing rings) at both ends are taken out from the shaft hole, and then new test pieces are placed.

4. A reciprocating seal test device with convenient assembly and disassembly according to claim 1, 2 or 3, characterized in that: Push the moving shaft (1-2) to the edge of the hole of the moving shaft support (1-1), place the support cover (3-3) on the other end of the moving shaft support (1-1), screw the stud of the pull rod (3-4) into the screw hole of the moving shaft (1-2), put the support pad (3-2) on the stud at the other end of the pull rod (3-4), screw the nut (3-1) to slowly pull the moving shaft (1-2) into the shaft hole of the moving shaft support (1-1), and after the moving shaft (1-2) passes the first test piece, continue to pull the moving shaft (1-2) to the second test piece. At this point, the moving shaft is installed. Remove the V-block (3-5), restore the electric cylinder (2-2) to the requirements shown in Figure 1, and proceed to the next test. Since the V-shaped block (3-5) can ensure that the holes of the movable shaft (1-2) and the movable shaft support (1-1) are concentric, the machine parts will not be damaged during the disassembly process, thereby ensuring that the test bench can work reliably for a long time.

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