Vacuum pump test board

Abstract

The utility model relates to a vacuum pump testboard, which belongs to the technical field of automobile vacuum pump testing, and comprises a testboard and a protective box, and a testing mechanism for testing the pumping efficiency of a vacuum pump is arranged outside the testboard; the testing mechanism comprises a hydraulic cylinder fixedly connected to the top of the protection box, an output shaft of the hydraulic cylinder is fixedly connected with a gas storage box, a gas flowmeter is installed on the outer side of a gas outlet pipe, limiting rods are fixedly connected to the periphery of the top of the testing table, and sliding blocks are fixedly connected to the left side and the right side of the gas storage box correspondingly. The sliding block is slidably connected with the limiting rod, and the middle part of the top end of the test bench is fixedly connected with a positioning groove. According to the vacuum pump test bench, the function of testing the pumping efficiency of the vacuum pump is realized, and the influence of different parameter settings on the performance of the vacuum pump is analyzed by testing the pumping efficiency, so that the optimal working parameter combination is found, the vacuum pump operates in the optimal state, the service life of the vacuum pump is prolonged, and the working effect of the vacuum pump is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile vacuum pump test, concretely to a vacuum pump test board. BACKGROUND

[0002] The automobile vacuum pump is an important component in the automobile brake system, and its main function is to provide a vacuum source for the vacuum booster system to help the driver operate the brake more easily.

[0003] In the production process of the automobile vacuum pump, a test board is needed, and the Chinese utility model patent with the publication number CN208206474U discloses an automobile vacuum pump test board, which comprises a fixed bottom, the upper end of the fixed bottom is connected with a top plate through a top rod, the two sides of the top plate are connected with locking rods, one end of the locking rod is connected with a locking plate, and the other end is connected with a rotating handle, a fixed seat is arranged on the fixed bottom, the inside of the fixed seat is connected with a supporting rod through a sliding block, the supporting rod is connected with a pressure sensor through a connecting rod, one side of the fixed seat is provided with a displacement sensor A, a displacement sensor B is arranged on the sliding block, and the pressure sensor is connected with a display screen through a controller.

[0004] The utility model discloses, through pressure sensor, displacement sensor A and displacement sensor B, the pressure data and displacement data of vacuum pump can be effectively tested, the performance parameters of vacuum pump can be effectively tested, and the cost is low. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a vacuum pump test board, which has the advantages of vacuum pump air extraction efficiency test, solves the problem that the existing test board does not have air extraction efficiency test function, cannot analyze the influence of different parameter settings on the performance of the vacuum pump by testing the air extraction efficiency, cannot find the best working parameter combination, and may cause the vacuum pump to run in a non-optimal state for a long time, affecting its service life and working effect.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A vacuum pump test board, comprising a test board and a protection box, the test board is externally provided with a test mechanism for vacuum pump air extraction efficiency test;

[0008] The test mechanism includes a hydraulic cylinder fixedly connected to the top of the protection box, an air storage tank fixedly connected to the output shaft of the hydraulic cylinder, air pumps fixedly connected to the left and right sides of the top of the air storage tank, an air outlet pipe fixedly connected to the bottom of the air storage tank, a gas flow meter installed on the outside of the air outlet pipe, limit rods fixedly connected to the top of the test bench, sliding blocks fixedly connected to the left and right sides of the air storage tank, and a positioning groove fixedly connected to the middle of the top end of the test bench.

[0009] Further, the protection box is provided with an air pump access opening on the left and right sides of the top of the protection box.

[0010] Further, the test bench is provided with an electric push rod fixedly connected to the left and right sides of the test bench, and a clamping plate fixedly connected to the output shaft of the electric push rod.

[0011] Further, the clamping plate is provided with a damper fixedly connected to the outside of the clamping plate, and a rubber pad bonded to the outside of the damper.

[0012] Further, the bottom of the protection box is fixedly connected to a base, and the inner side of the base is bonded to a sound-absorbing cotton pad.

[0013] Further, the left and right sides of the base are fixedly connected to a sound-absorbing pipe, and the sound-absorbing pipe is connected to the protection box.

[0014] Further, the front of the base is fixedly installed with a baffle, and the outer surface of the baffle is provided with an air outlet hole.

[0015] Further, the test bench is fixedly connected to the inner bottom wall of the protection box, and the front of the protection box is hingedly connected to a sealing door.

[0016] Compared with the prior art, the vacuum pump test bench has the following advantages:

[0017] 1. The vacuum pump test bench realizes the vacuum pump air extraction efficiency test function by setting the test mechanism, the positioning groove can limit the vacuum pump to facilitate pipeline butt joint, the hydraulic cylinder can drive the air storage tank to move vertically downward, the sliding block and the limit rod can improve the lifting stability of the air storage tank, the air outlet pipe can be butt jointed with the vacuum pipe of the vacuum pump, during which the vacuum pump will continuously extract the air inside the air storage tank, at this time, the staff checks the gas flow meter, and the air loss rate inside the air storage tank can be obtained, so as to confirm the air extraction efficiency of the vacuum pump, finally, the influence of different parameter settings on the performance of the vacuum pump is analyzed by testing the air extraction efficiency, so as to find the best working parameter combination, so that the vacuum pump runs in the optimal state, and the service life and working effect are improved.

[0018] 2. This vacuum pump test bench, through the combination of a base, sound-absorbing cotton pad, and silencer pipe, allows the silencer pipe to transport gas. The sound insulation material and sound-absorbing cotton pad inside the silencer pipe can absorb and reduce the noise during the exhaust of the vacuum pump, so as to avoid affecting the personnel in the vicinity. Attached Figure Description

[0019] Fig. 1 This is a cross-sectional view of the structure of this utility model;

[0020] Fig. 2 This is a three-dimensional structural view of the test bench of this utility model;

[0021] Fig. 3 This is a top view of the structure of the gas storage box of this utility model;

[0022] Fig. 4 This is a front view of the structure of this utility model.

[0023] In the diagram: 1 Test stand, 2 Protective box, 3 Hydraulic cylinder, 4 Air storage box, 5 Air pump, 6 Air outlet pipe, 7 Gas flow meter, 8 Limit rod, 9 Slider, 10 Positioning groove, 11 Inlet / outlet, 12 Electric push rod, 13 Clamping plate, 14 Damper, 15 Base, 16 Sound-absorbing cotton pad, 17 Silencer pipe, 18 Baffle, 19 Sealing door. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figs. 1 to 4 This embodiment of a vacuum pump test bench includes a test bench 1 and a protective box 2. The test bench 1 is externally equipped with a testing mechanism for testing the pumping efficiency of the vacuum pump. The testing mechanism includes a hydraulic cylinder 3 fixedly connected to the top of the protective box 2. The output shaft of the hydraulic cylinder 3 is fixedly connected to a gas storage tank 4. Gas pumps 5 are fixedly connected to the left and right sides of the top of the gas storage tank 4. An outlet pipe 6 is fixedly connected to the bottom of the gas storage tank 4. A gas flow meter 7 is installed on the outside of the outlet pipe 6. Limiting rods 8 are fixedly connected around the top of the test bench 1. Slider blocks 9 are fixedly connected to the left and right sides of the gas storage tank 4, and the sliders 9 are slidably connected to the limiting rods 8. A positioning groove 10 is fixedly connected to the center of the top of the test bench 1. The positioning groove 10 can limit the vacuum pump to facilitate pipe connection. The hydraulic cylinder 3 can drive the gas storage tank 4 to move vertically downwards. The sliders 9 and the limiting rods 8 can improve the lifting stability of the gas storage tank 4. The outlet pipe 6 can connect with the vacuum tube of the vacuum pump.

[0026] During this period, the vacuum pump will continuously extract the air inside the gas tank 4, at this time, the staff checks the gas flow meter 7, that is, the air loss rate inside the gas tank 4 can be obtained, so as to confirm the air extraction efficiency of the vacuum pump according to the air loss rate, finally, the influence of different parameter settings on the performance of the vacuum pump is analyzed by testing the air extraction efficiency, so as to find the best combination of working parameters, so that the vacuum pump runs in the optimal state, improves the service life and working effect.

[0027] Need to be explained, the left and right sides of the top of the protection box 2 are provided with an entrance and exit 11 for the activity of the air pump 5, the air pump 5 is connected with the gas tank 4, the entrance and exit 11 can provide the lifting space of the entrance and exit 11, the air pump 5 can inject gas into the gas tank 4.

[0028] Specifically, the electromagnetic valve is fixedly connected outside the gas outlet pipe 6, which can avoid the leakage.

[0029] Need to be explained, the left and right sides of the test bench 1 are fixedly connected with the electric push rod 12, the output shaft of the electric push rod 12 is fixedly connected with the clamping plate 13, the outer side of the clamping plate 13 is fixedly connected with the damper 14, the outer side of the damper 14 is bonded with the rubber pad, the electric push rod 12 can clamp and fix the vacuum pump through the clamping plate 13, which can ensure the stability of the vacuum pump during testing, and the damper 14 can play a buffering effect during clamping and fixing, so as to avoid clamping the vacuum pump.

[0030] Need to be explained, the application can ensure that the two electric push rods 12 piston rods are extended and retracted at the same time by adopting synchronous devices such as synchronous controllers, so as to realize synchronous operation, these synchronous devices are common and mature in the field of electric control, so they will not be described in detail in the specific embodiments.

[0031] In this embodiment, the bottom of the protection box 2 is fixedly connected with the bottom table 15, the inner side of the bottom table 15 is bonded with the sound-absorbing cotton pad 16, the left and right sides of the bottom table 15 are fixedly connected with the sound-absorbing pipe 17, the sound-absorbing pipe 17 is connected with the protection box 2, the sound-absorbing pipe 17 can play a role in conveying gas, and the sound insulation material inside the sound-absorbing pipe 17 and the sound-absorbing cotton pad 16 can absorb and reduce the noise during exhaust of the vacuum pump, so as to avoid affecting the staff of the accessories.

[0032] Specifically, the front of the bottom table 15 is fixedly installed with the baffle 18, and the outer surface of the baffle 18 is provided with an exhaust hole.

[0033] Need to be explained, the test bench 1 is fixedly connected to the inner bottom wall of the protection box 2, the front of the protection box 2 is hingedly connected with the sealing door 19, the sealing door 19 ensures the sealing property of the protection box 2, and at the same time, the protection effect of the protection box 2 can be enhanced.

[0034] The working principle of the above embodiment is:

[0035] During use, the operator first places the vacuum pump into the positioning slot 10 of the test bench 1. Then, the electric push rod 12 is activated, which clamps and fixes the vacuum pump from the left and right by the clamping plate 13, ensuring the stability of the vacuum pump during testing. Subsequently, the hydraulic cylinder 3 is activated, which drives the gas storage tank 4 to move vertically downward. At this time, the slider 9 and the limit rod 8 can improve the lifting stability of the gas storage tank 4. When the gas storage tank 4 moves downward to a certain position, the exhaust pipe 6 can fit with the vacuum tube of the vacuum pump, thus connecting them. During this process, the vacuum pump is activated to continuously extract air from the inside of the gas storage tank 4. At this time, the operator can check the gas flow meter 7 to obtain the air loss rate inside the gas storage tank 4, and thus determine the pumping efficiency of the vacuum pump based on the air loss rate.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0037] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum pump test bench comprising a test bench (1) and a guard box (2), characterized in that: The test platform (1) is externally provided with a test mechanism for testing the air exhaust efficiency of a vacuum pump; The test mechanism comprises a hydraulic cylinder (3) fixedly connected to the top of the protective box (2), an air storage tank (4) fixedly connected to the output shaft of the hydraulic cylinder (3), air pumps (5) fixedly connected to the top of the air storage tank (4) on the left and right sides, an air outlet pipe (6) fixedly connected to the bottom of the air storage tank (4), a gas flow meter (7) mounted on the outer side of the air outlet pipe (6), limit rods (8) fixedly connected to the top of the test platform (1) around, sliding blocks (9) fixedly connected to the left and right sides of the air storage tank (4), the sliding blocks (9) being in sliding connection with the limit rods (8), and a positioning groove (10) fixedly connected to the middle of the top end of the test platform (1).

2. A vacuum pump test bench according to claim 1, characterized in that: The protective box (2) is provided with entrances and exits (11) on the left and right sides of the top for the movement of the air pumps (5), and the air pumps (5) are in communication with the air storage tank (4).

3. A vacuum pump test bench according to claim 1, characterized in that: The test platform (1) is fixedly connected with electric push rods (12) on the left and right sides, and the output shafts of the electric push rods (12) are fixedly connected with clamping plates (13).

4. A vacuum pump test bench according to claim 3, characterized in that: The clamping plates (13) are fixedly connected with dampers (14) on the outer sides, and the outer sides of the dampers (14) are bonded with rubber pads.

5. A vacuum pump test bench according to claim 1, characterized in that: The bottom of the protective box (2) is fixedly connected with a base (15), and the inner side of the base (15) is bonded with a sound-absorbing cotton pad (16).

6. A vacuum pump test bench according to claim 5, characterized in that: The left and right sides of the base (15) are fixedly connected with sound-absorbing pipes (17), and the sound-absorbing pipes (17) are in communication with the protective box (2).

7. A vacuum pump test bench according to claim 5, characterized in that: The front of the base (15) is fixedly mounted with a baffle (18), and the outer surface of the baffle (18) is provided with air outlet holes.

8. A vacuum pump test bench according to claim 1, characterized in that: The test platform (1) is fixedly connected to the inner bottom wall of the protective box (2), and a sealing door (19) is hingedly connected to the front of the protective box (2).

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