A comprehensive performance testing device for automobile oil pump and vacuum pump assembly

Abstract

A comprehensive performance testing device for an automobile oil pump and vacuum pump assembly relates to the technical field of oil pump and vacuum pump assembly testing, including a testing platform, a fixed L-shaped plate is fixedly provided on the top of the testing platform, a mounting groove is penetrated through the end of the fixed L-shaped plate, a vertically sliding lifting plate is provided on the inner wall of the fixed L-shaped plate, four positioning threaded pipe seats are fixedly provided at the bottom of the lifting plate, the arrangement of the four positioning threaded pipe seats is the same as the arrangement of the four positioning holes of the oil pump and vacuum pump assembly, a fixed oil pipe, a fixed air pipe and an oil inlet pipe are fixedly provided on the top of the lifting plate, and the bottom ends of the fixed oil pipe, the fixed air pipe and the oil inlet pipe all extend downward and are flush with the bottom of the lifting plate. The present invention solves the problems of poor detection continuity of the existing oil pump and vacuum pump assembly testing device resulting in a long detection cycle; the problem of complex one-way valve opening test operation; the problem of cumbersome fixing and disassembly procedures of the oil pump and vacuum pump assembly; and the problem of complex connection procedures of the drive sprocket and the chain.

Description

Technical Field

[0001] The invention relates to the technical field of oil pump and vacuum pump assembly detection, in particular to a comprehensive performance detection device for an automobile oil pump and vacuum pump assembly. Background Art

[0002] The oil pump and vacuum pump assembly is mainly used in light truck diesel engines. The compact structure of the integrated oil pump and vacuum pump and the weight-reducing design of the aluminum housing allow it to be installed and reduced in an extremely limited space. The design of the vacuum pump can improve the performance of the vehicle's braking system and assist in braking performance. The oil pump and vacuum pump assembly has an oil pump on one side and a vacuum pump on the other. The pump body is integrated and the main shaft is shared. The integrated design of the oil pump and vacuum pump not only meets the lubrication needs of the engine, but also improves the braking performance of the vehicle. The oil pump and vacuum pump assembly plays a vital role in the automobile, so its vacuum degree and oil discharge performance need to be tested before leaving the factory. The corresponding testing device is required to test the oil pump and vacuum pump assembly.

[0003] The existing oil pump and vacuum pump assembly detection device gradually exposed its shortcomings during use, mainly in the following aspects:

[0004] First, the comprehensive performance test has poor continuity, resulting in a long test cycle. Specifically, the corresponding test devices are required to test the vacuum degree and oil discharge performance of the oil pump and vacuum pump assembly. The same oil pump and vacuum pump assembly needs to be fixed on two different positioning fixtures during testing and then connected to different test devices for testing. The complete testing process of the oil pump and vacuum pump assembly requires fixing and disassembling the oil pump and vacuum pump assembly multiple times. Therefore, the comprehensive performance test of the oil pump and vacuum pump assembly has poor continuity, resulting in a long test cycle and low test efficiency.

[0005] Second, the one-way valve opening test operation is complicated. Specifically, a one-way valve is installed in the exhaust port of the oil pump and the vacuum pump assembly. To ensure the accuracy of the test results, the one-way valve needs to be subjected to a valve opening test before the vacuum performance test of the oil pump and the vacuum pump assembly, that is, to check whether the valve opening pressure of the one-way valve is normal. When testing the valve opening pressure of the one-way valve, it is necessary to connect it with the vacuum container. The valve opening pressure of the one-way valve can be tested by comparing the vacuum degree at the front and rear ends of the one-way valve. After the one-way valve test is completed, the vacuum container needs to be released to normal pressure before the one-way valve can be removed. Therefore, before the one-way valve opening test is performed, the vacuum container needs to be evacuated to vacuum by a vacuum pumping equipment, which makes the one-way valve opening test operation complicated.

[0006] Third, the fixing and disassembly process of the oil pump and vacuum pump assembly is cumbersome. Specifically, after the oil pump and vacuum pump assembly are fixedly connected to the positioning fixture, the air suction port or oil discharge port is connected to the detection device. To ensure the sealing of the connection between the oil pump and vacuum pump assembly and the detection device, the oil pump and vacuum pump assembly is generally fixedly connected to the positioning fixture with bolts. Therefore, when fixing and disassembling the oil pump and vacuum pump assembly, the bolts need to be operated one by one, which makes the fixing and disassembly process of the oil pump and vacuum pump assembly cumbersome.

[0007] Fourth, the process of connecting the drive sprocket of the oil pump and vacuum pump assembly with the chain of the drive component in the detection device is complicated. Specifically, when the oil pump and vacuum pump assembly are in operation, the drive component in the detection device drives the drive sprocket outside the oil pump and vacuum pump assembly through the chain. When the drive sprocket is connected to the chain, it is necessary to first remove a section of the chain, then wrap the chain around the drive sprocket and connect it to the drive sprocket, and finally assemble the chain. Therefore, the process of connecting the drive sprocket of the oil pump and vacuum pump assembly with the chain of the drive component in the detection device is complicated.

[0008] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0009] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a comprehensive performance detection device for an automobile oil pump and vacuum pump assembly, which can simultaneously detect the vacuum degree and oil discharge performance of the oil pump and vacuum pump assembly, eliminating the process of switching the oil pump and vacuum pump assembly between different detection devices, greatly shortening the detection cycle and improving the detection efficiency;

[0010] The device can also evacuate the vacuum container to a vacuum without the aid of external vacuum equipment, thus simplifying the operation process of the one-way valve opening experiment and improving the practicality of the device.

[0011] The device can also automatically fix and disassemble the oil pump and vacuum pump assembly, simplifying the fixing and disassembly process of the oil pump and vacuum pump assembly and further improving the detection efficiency;

[0012] The chain of the device can be quickly connected to and separated from the driving sprockets of the oil pump and the vacuum pump assembly without being disconnected, which simplifies the connection process of the driving sprocket and the chain and further improves the practicability of the device.

[0013] To solve the above problems, the present invention provides the following technical solutions:

[0014] A comprehensive performance testing device for an automobile oil pump and vacuum pump assembly comprises a testing platform, a fixed L-shaped plate is fixedly provided on the top of the testing platform, a mounting groove is penetrated at the end of the fixed L-shaped plate, a lifting plate is provided on the inner wall of the fixed L-shaped plate for vertical sliding, four positioning threaded pipe seats are fixedly provided on the bottom of the lifting plate, the arrangement of the four positioning threaded pipe seats is the same as the arrangement of four positioning holes of the oil pump and vacuum pump assembly, a fixed oil pipe, a fixed air pipe and an oil inlet pipe are fixedly provided on the top of the lifting plate, the bottom ends of the fixed oil pipe, the fixed air pipe and the oil inlet pipe all extend downward and are flush with the bottom of the lifting plate, the upper port of the oil inlet pipe is connected with the fixed oil pipe, and the arrangement of the lower ports of the fixed oil pipe, the fixed air pipe and the oil inlet pipe corresponds to the oil pump and The oil discharge port, air suction port and lubricating oil port of the vacuum pump assembly are arranged in the same manner; an oil passing pipe and an air suction pipe are fixedly provided on the top of the fixed L-shaped plate, the oil passing pipe is connected with the fixed oil pipe through an oil passing hose, the air suction pipe is connected with the fixed air pipe through an air suction hose, a lubricating oil tank with an opening on the top is fixedly provided at the bottom of the test bench, a avoidance groove is provided at the bottom of the test bench located in the lubricating oil tank, one of the ports of the oil passing pipe passes through the test bench and is connected with the lubricating oil tank, a flow meter is provided on the oil passing pipe, a U-shaped seat is fixedly provided on the top of the test bench, a vacuum tank is fixedly provided on the top of the U-shaped seat, the vacuum tank is connected with the air suction pipe, and a vacuum degree measuring instrument connected with its inner cavity is fixedly provided on the outer wall of the vacuum tank.

[0015] As an optimized solution, a driving assembly for driving the driving sprocket of the oil pump and vacuum pump assembly and two bolt tightening assemblies for fixing the oil pump and vacuum pump assembly are provided on the top of the testing bench. The two bolt tightening assemblies are located on both sides of the fixed L-shaped plate and are arranged facing each other. A detection assembly for detecting the opening pressure of the one-way valve is provided on the top of the U-shaped seat, and the detection assembly is connected to the vacuum tank.

[0016] As an optimized solution, the bolt tightening assembly includes a movable plate horizontally slidably connected to the top of the inspection platform, a sliding plate vertically slidably arranged at the end of the movable plate, two rotating cylinders rotatably arranged along a plumb line are arranged on the top of the sliding plate, a lifting rod vertically slidably connected to the top of the rotating cylinder is penetrated by a lifting rod, a magnetic sleeve is fixedly connected to the top of the lifting rod, a positioning bolt magnetically linked to the magnetic sleeve is arranged inside the magnetic sleeve, and a built-in compression spring is arranged inside the rotating cylinder, and two ends of the built-in compression spring correspondingly resist the lifting rod and the rotating cylinder.

[0017] The two ends of the U-shaped plate are connected to the upper and lower surfaces of the fixing plate, and the fixing plate has the advantages of being easy to break and difficult to break.

[0018] As an optimized solution, the detection component includes a fixed block fixedly connected to the top of the U-shaped seat, the fixed block is provided with a connecting groove inside, the opposite ends of the fixed block are fixedly connected to ventilation pipes connected to the connecting groove, one of the ventilation pipes is provided with a first control valve and connected to the vacuum tank, the exhaust pipe is provided with a second control valve, the upper port of the other ventilation pipe is fixedly connected to a lower fixed cylinder with a connecting arrangement, the top of the lower fixed cylinder is an opening arrangement, an upper fixed cylinder with an opening arrangement at the top is provided above the lower fixed cylinder, a circular hole is provided through the bottom of the upper fixed cylinder, the lower outer wall of the upper fixed cylinder and the upper outer wall of the lower fixed cylinder are fixedly covered with flanges, the two flanges are fixedly connected by a number of fixing bolts, the upper port of the upper fixed cylinder is fixedly provided with a first negative pressure gauge with a connecting arrangement, and the top of the fixed block is provided with a second negative pressure gauge connected to the connecting groove.

[0019] As an optimized solution, two vertically arranged lifting and telescopic cylinders are fixedly provided on the top of the detection platform, and the telescopic ends of the lifting and telescopic cylinders are fixedly connected to the lifting plate.

[0020] As an optimized solution, two horizontally arranged electric telescopic cylinders are fixedly provided on the top of the detection platform, and the telescopic ends of the two electric telescopic cylinders are fixedly connected to the two movable plates respectively.

[0021] As an optimized solution, a vertically arranged driving telescopic cylinder is fixedly provided at the end of the movable plate, and the telescopic end of the driving telescopic cylinder is fixedly connected to the sliding plate.

[0022] As an optimized solution, two servo motors are fixedly provided at the bottom of the sliding plate, and the output ends of the two servo motors pass through the sliding plate and are fixedly connected to the two rotating cylinders respectively.

[0023] As an optimized solution, a driving motor is fixedly provided on the top of the fixed L-shaped plate, and the output end of the driving motor passes through the fixed plate and is fixedly connected to the driving sprocket.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. After the one-way valve is inspected, install it into the oil pump and vacuum pump assembly. When positioning the oil pump and vacuum pump assembly, first place the oil pump and vacuum pump assembly through the installation slot and place it under the lifting plate and move it upward. The four positioning threaded pipe seats are correspondingly inserted into the four positioning holes of the oil pump and vacuum pump assembly until the oil pump and vacuum pump assembly contacts the lifting plate. The two electrically controlled telescopic cylinders drive the two moving plates to move toward each other to the preset position. At this time, the four positioning bolts correspond to the four positioning threaded pipe seats one by one. The telescopic cylinder drives the sliding plate to slide upward, and the top of the positioning bolt is aligned with the positioning thread. After the bottom ends of the pipe seats are butted, the lifting rod slides into the rotating cylinder, the built-in compression spring is compressed, and the servo motor drives the rotating cylinder and the positioning bolt to rotate until the positioning bolt is screwed into the positioning threaded pipe seat to fix the oil pump and the vacuum pump assembly. Similarly, when the oil pump and the vacuum pump assembly are disassembled, the above operation is repeated, and the servo motor rotates in the opposite direction to unscrew the positioning bolt, and then the oil pump and the vacuum pump assembly are disassembled, realizing the function of automatically fixing and disassembling the oil pump and the vacuum pump assembly, simplifying the fixing and disassembly process of the oil pump and the vacuum pump assembly, and improving the detection efficiency;

[0026] 2. When the driving sprocket of the oil pump and vacuum pump assembly is connected to the chain, the lifting and telescopic cylinder drives the lifting plate and the oil pump and vacuum pump assembly to move downward, and the driving sprocket contacts the chain to press the chain. At the same time, the two rotating columns move toward each other under the pull of the chain, and the reset compression spring is compressed. When the oil inlet of the oil pump and vacuum pump assembly passes through the avoidance groove and immerses into the lubricating oil in the lubricating oil tank, the driving sprocket and the chain are connected. Similarly, when the driving sprocket of the oil pump and vacuum pump assembly is separated from the chain, the lifting and telescopic cylinder drives the lifting plate and the oil pump and vacuum pump assembly to move upward. With the cooperation of the reset compression spring, the two rotating columns move away from each other. When the lifting plate is reset, the driving sprocket and the chain are completely separated. The chain of the device can be quickly connected and separated from the driving sprocket of the oil pump and vacuum pump assembly without being disassembled, which simplifies the connection process of the driving sprocket and the chain and improves the practicability of the device.

[0027] 3. When testing the oil pump and vacuum pump assembly, close the first control valve, drive the motor to drive the active sprocket, chain, rotating column and driving sprocket to rotate, and the lubricating oil in the lubricating oil tank is extracted by the oil pump and vacuum pump assembly through the oil drain port to the fixed oil pipe. The lubricating oil in the fixed oil pipe enters the lubricating oil tank again through the oil hose and the oil pipe. At the same time, the oil pump and vacuum pump assembly extracts the air in the vacuum tank, and the air in the vacuum tank enters the oil pump through the exhaust pipe, exhaust hose, fixed air pipe and one-way valve in turn. The oil pump and vacuum pump are in the body and discharged to the outside. After the oil pump and vacuum pump are running stably, the flow meter can be used to determine whether the oil discharge performance of the oil pump and vacuum pump is qualified, and the vacuum degree measuring instrument can be used to determine whether the vacuum performance of the oil pump and vacuum pump is qualified. The function of simultaneously testing the vacuum degree and oil discharge performance of the oil pump and vacuum pump is realized, eliminating the process of switching the oil pump and vacuum pump between different testing devices, greatly shortening the testing cycle, and further improving the testing efficiency;

[0028] 4. During the vacuum performance test of the oil pump and vacuum pump assembly, the vacuum tank is evacuated to vacuum again, and then can be used to test the opening pressure of the one-way valve in the next oil pump and vacuum pump assembly to be tested. The device can evacuate the vacuum tank to vacuum without the help of external vacuum equipment, which simplifies the operation process of the one-way valve opening test and further improves the practicality of the device;

[0029] 5. During the initial operation of the oil pump and vacuum pump assembly, part of the extracted lubricating oil enters the lubricating oil port of the oil pump and vacuum pump assembly through the oil inlet pipe, and then lubricates the vacuum pump part of the oil pump and vacuum pump assembly, thereby realizing the function of protecting the oil pump and vacuum pump assembly during the detection process, and further improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the lifting plate and the fixed L-shaped plate of the present invention;

[0033] Figure 3 This is a schematic structural diagram of the bottom of the lifting plate of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the oil pump and vacuum pump assembly of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the bolt tightening assembly of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the two ends of the support plate of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the detection component of the present invention;

[0038] Figure 8 It is a schematic structural diagram of the driving sprocket and the chain when connected in the present invention.

[0039] In the figure: 1-testing table; 2-bolt tightening assembly; 3-driving assembly; 4-lifting plate; 5-installation slot; 6-oil pump and vacuum pump assembly; 7-fixed L-shaped plate; 8-driving motor; 9-fixed plate; 10-chain; 11-driving sprocket; 12-oil pipe; 13-flow meter; 14-exhaust pipe; 15-vacuum tank; 16-vacuum degree measuring instrument; 17-testing assembly; 18-U-shaped seat; 19-second control valve; 20-lubricating oil tank; 21-avoidance groove; 22-electrically controlled telescopic cylinder; 23-lifting telescopic cylinder; 24-positioning threaded pipe seat; 25-oil inlet pipe; 26-oil hose; 27-exhaust hose; 28-fixed air pipe; 29-fixed oil pipe; 30-oil inlet; 31-driving sprocket; 32-positioning hole; 33-lubricating oil port; 34-exhaust port; 35-check valve; 36-oil drain port; 37-moving plate; 38-servo motor; 39-sliding plate; 40-rotating cylinder; 41-built-in compression spring; 42-lifting rod; 43-magnetic sleeve; 44-positioning bolt; 45-driving telescopic cylinder; 46-annular groove; 47-rotating column; 48-U-shaped plate; 49-reset compression spring; 50-baffle; 51-sliding rod; 52-support plate; 53-connecting groove; 54-ventilation pipe; 55-first control valve; 56-fixed block; 57-second negative pressure gauge; 58-first negative pressure gauge; 59-upper fixed cylinder; 60-flange; 61-fixing bolt; 62-circular hole; 63-lower fixed cylinder. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0041] like Figures 1 to 8As shown, a comprehensive performance testing device for an automobile oil pump and vacuum pump assembly includes a testing platform 1, a fixed L-shaped plate 7 is fixedly provided on the top of the testing platform 1, a mounting groove 5 is penetrated at the end of the fixed L-shaped plate 7, a lifting plate 4 is provided on the inner wall of the fixed L-shaped plate 7 for vertical sliding, four positioning threaded pipe seats 24 are fixedly provided at the bottom of the lifting plate 4, and the arrangement of the four positioning threaded pipe seats 24 is the same as the arrangement of the four positioning holes 32 of the oil pump and vacuum pump assembly body 6, a fixed oil pipe 29, a fixed air pipe 28 and an oil inlet pipe 25 are fixedly provided on the top of the lifting plate 4, the bottom ends of the fixed oil pipe 29, the fixed air pipe 28 and the oil inlet pipe 25 all extend downward and are flush with the bottom of the lifting plate 4, the upper port of the oil inlet pipe 25 is connected with the fixed oil pipe 29, and the arrangement of the lower ports of the fixed oil pipe 29, the fixed air pipe 28 and the oil inlet pipe 25 corresponds to the oil pump and vacuum pump assembly The oil discharge port 36, air extraction port 34 and lubricating oil port 33 of the main body 6 are arranged in the same manner; an oil passage pipe 12 and an air extraction pipe 14 are fixedly provided through the top of the fixed L-shaped plate 7; the oil passage pipe 12 is connected to the fixed oil pipe 29 through an oil passage hose 26; the air extraction pipe 14 is connected to the fixed air pipe 28 through an air extraction hose 27; a lubricating oil tank 20 with an opening at the top is fixedly provided at the bottom of the testing platform 1; a avoidance groove 21 is provided through the bottom of the testing platform 1 at a position inside the lubricating oil tank 20; one of the ports of the oil passage pipe 12 passes through the testing platform 1 and is connected to the lubricating oil tank 20; a flow meter 13 is provided on the oil passage pipe 12; a U-shaped seat 18 is fixedly provided on the top of the testing platform 1; a vacuum tank 15 is fixedly provided on the top of the U-shaped seat 18; the vacuum tank 15 is connected to the air extraction pipe 14; a vacuum degree measuring instrument 16 connected to its inner cavity is fixedly provided on the outer wall of the vacuum tank 15.

[0042] A driving assembly 3 for driving the driving sprocket 31 of the oil pump and vacuum pump assembly 6 and two bolt tightening assemblies 2 for fixing the oil pump and vacuum pump assembly 6 are provided on the top of the testing bench 1. The two bolt tightening assemblies 2 are located on both sides of the fixed L-shaped plate 7 and are arranged opposite to each other. A detection assembly 17 for detecting the valve opening pressure of the one-way valve 35 is provided on the top of the U-shaped seat 18. The detection assembly 17 is connected to the vacuum tank 15.

[0043] The bolt tightening assembly 2 includes a movable plate 37 horizontally slidably connected to the top of the inspection table 1, a sliding plate 39 vertically slidably arranged at the end of the movable plate 37, two rotating cylinders 40 rotatably arranged along a plumb line are arranged on the top of the sliding plate 39, a lifting rod 42 vertically slidably connected to the top of the rotating cylinder 40 is penetrated by a lifting rod 42, a magnetic sleeve 43 is fixedly connected to the top of the lifting rod 42, a positioning bolt 44 magnetically linked to the lifting rod 42 is arranged in the magnetic sleeve 43, and a built-in compression spring 41 is arranged in the rotating cylinder 40, and the two ends of the built-in compression spring 41 are correspondingly abutted against the lifting rod 42 and the rotating cylinder 40.

[0044] The driving assembly 3 includes two support plates 52 fixedly connected to the top of the detection platform 1, the two support plates 52 are located on both sides of the fixed L-shaped plate 7, and the ends of the support plates 52 are penetrated by a sliding rod 51 that is horizontally slidable. The two ends of the sliding rod 51 are respectively fixedly connected to a U-shaped plate 48 and a baffle 50, and the two U-shaped plates 48 are located between the two support plates 52 and are arranged opposite to each other. A return compression spring 49 is mounted on the sliding rod 51, and the two ends of the return compression spring 49 are correspondingly abutted against the support plates 52 and the baffle 50. A rotating column 47 that is arranged to rotate along a horizontal line is provided in the U-shaped plate 48, and the two ends of the rotating column 47 are correspondingly connected to the relative inner walls of the U-shaped plate 48 for rotation. The outer wall of the rotating column 47 is provided with an annular groove 46 along the circumferential direction, and a fixed plate 9 is fixedly provided on the top of the fixed L-shaped plate 7. A driving sprocket 11 that is horizontally rotatable is provided at the end of the fixed plate 9. The driving sprocket 11 is connected to the two rotating columns 47 through a chain 10, and a partial area of ​​the chain 10 is located in the annular groove 46.

[0045] The detection assembly 17 includes a fixed block 56 fixedly connected to the top of the U-shaped seat 18, a connecting groove 53 is provided inside the fixed block 56, and opposite ends of the fixed block 56 are fixedly connected with ventilation pipes 54 connected with the connecting groove 53, one of the ventilation pipes 54 is provided with a first control valve 55 and is connected with the vacuum tank 15, and the exhaust pipe 14 is provided with a second control valve 19, and the upper end of the other ventilation pipe 54 is fixedly connected with a lower fixed cylinder 63 arranged in communication, the top of the lower fixed cylinder 63 is opened, and an upper fixed cylinder 59 with an open top is provided above the lower fixed cylinder 63, and a circular hole 62 is provided through the bottom of the upper fixed cylinder 59, and the lower outer wall of the upper fixed cylinder 59 and the upper outer wall of the lower fixed cylinder 63 are fixedly sleeved with flanges 60, and the two flanges 60 are fixedly connected by a plurality of fixing bolts 61, and the upper end of the upper fixed cylinder 59 is fixedly provided with a first negative pressure gauge 58 arranged in communication, and the top of the fixed block 56 is provided with a second negative pressure gauge 57 connected with the connecting groove 53.

[0046] Two vertically arranged lifting and telescopic cylinders 23 are fixedly provided on the top of the testing platform 1 , and the telescopic ends of the lifting and telescopic cylinders 23 are fixedly connected to the lifting plate 4 .

[0047] Two horizontally arranged electric telescopic cylinders 22 are fixedly provided on the top of the testing platform 1 , and the telescopic ends of the two electric telescopic cylinders 22 are fixedly connected to the two movable plates 37 .

[0048] A vertically arranged driving and telescopic cylinder 45 is fixedly disposed at the end of the moving plate 37 , and the telescopic end of the driving and telescopic cylinder 45 is fixedly connected to the sliding plate 39 .

[0049] Two servo motors 38 are fixedly disposed at the bottom of the sliding plate 39 , and output ends of the two servo motors 38 both pass through the sliding plate 39 and are fixedly connected to the two rotating cylinders 40 , respectively.

[0050] A driving motor 8 is fixedly disposed on the top of the fixed L-shaped plate 7 , and an output end of the driving motor 8 passes through the fixed plate 9 and is fixedly connected to the driving sprocket 11 .

[0051] The working principle of this device is:

[0052] Before testing the oil pump and vacuum pump assembly 6, firstly perform a valve opening pressure test on the one-way valve 35 inside the oil pump and vacuum pump assembly 6 to be tested, take out the one-way valve 35 in the oil pump and vacuum pump assembly 6 to be tested and insert it into the lower fixed cylinder 63, and fix the two flanges 60 together by a plurality of fixing bolts 61. At this time, the lower fixed cylinder 63 abuts against the upper fixed cylinder 59, and the top and bottom of the one-way valve 35 abut against the bottom of the upper fixed cylinder 59 and the inner bottom of the lower fixed cylinder 63, and open the first control valve 55 (the second control valve 19 is in the closed state), and the values ​​of the first negative pressure gauge 58 and the second negative pressure gauge 57 begin to change. When the values ​​of the first negative pressure gauge 58 and the second negative pressure gauge 57 are stable, the difference between the two values ​​is calculated. If the difference is within the normal range, the one-way valve 35 is qualified. After the test, open the second control valve 19, and the air pressure in the vacuum tank 15 returns to normal pressure, and then take out the one-way valve 35.

[0053] After the one-way valve 35 is inspected, it is installed into the oil pump and vacuum pump assembly 6. When positioning the oil pump and vacuum pump assembly 6, first, the oil pump and vacuum pump assembly 6 is passed through the installation slot 5 and placed under the lifting plate 4 and moved upward. The four positioning threaded pipe seats 24 are correspondingly inserted into the four positioning holes 32 of the oil pump and vacuum pump assembly 6 until the oil pump and vacuum pump assembly 6 contacts the lifting plate 4. The two electrically controlled telescopic cylinders 22 respectively drive the two moving plates 37 to move toward each other to the preset positions. At this time, the four positioning bolts 44 correspond to the four positioning threaded pipe seats 24 one by one. The telescopic cylinder 45 is driven to drive the sliding plate 39 to slide upward, and the top of the positioning bolt 44 is aligned with the positioning threaded pipe seat. After the bottom ends of the seats 24 are butted, the lifting rod 42 slides into the rotating cylinder 40, the built-in compression spring 41 is compressed, and the servo motor 38 drives the rotating cylinder 40 and the positioning bolt 44 to rotate until the positioning bolt 44 is screwed into the positioning threaded pipe seat 24 to fix the oil pump and vacuum pump assembly 6. Similarly, when the oil pump and vacuum pump assembly 6 are disassembled, the above operation is repeated, and the servo motor 38 rotates in the opposite direction to unscrew the positioning bolt 44, and then the oil pump and vacuum pump assembly 6 are disassembled, thereby realizing the function of automatically fixing and disassembling the oil pump and vacuum pump assembly 6, simplifying the fixing and disassembly process of the oil pump and vacuum pump assembly 6, and improving the detection efficiency;

[0054] When the driving sprocket 31 of the oil pump and vacuum pump assembly 6 is connected to the chain 10, the lifting and telescopic cylinder 23 drives the lifting plate 4 and the oil pump and vacuum pump assembly 6 to move downward, and the driving sprocket 31 presses the chain 10 after contacting with the chain 10. At the same time, the two rotating columns 47 move toward each other under the pull of the chain 10, and the return compression spring 49 is compressed. When the oil inlet 30 of the oil pump and vacuum pump assembly 6 passes through the avoidance groove 21 and is immersed in the lubricating oil in the lubricating oil tank 20, the driving sprocket 31 is connected to the chain 10. Similarly, the oil pump and vacuum pump assembly 6 are connected. When the driving sprocket 31 of the oil pump and vacuum pump assembly 6 is separated from the chain 10, the lifting and telescopic cylinder 23 drives the lifting plate 4 and the oil pump and vacuum pump assembly 6 to move upward, and with the cooperation of the reset compression spring 49, the two rotating columns 47 move in opposite directions. When the lifting plate 4 is reset, the driving sprocket 31 is completely separated from the chain 10. The chain 10 of the device can be quickly connected and separated from the driving sprocket 31 of the oil pump and vacuum pump assembly 6 without being disassembled, which simplifies the connection process of the driving sprocket 31 and the chain 10 and improves the practicality of the device.

[0055] When the oil pump and vacuum pump assembly 6 is tested, the first control valve 55 is closed, the driving motor 8 drives the driving sprocket 11, the chain 10, the rotating column 47 and the driving sprocket 31 to rotate, and the lubricating oil in the lubricating oil tank 20 is discharged from the oil discharge port 36 to the fixed oil pipe 29 under the extraction of the oil pump and vacuum pump assembly 6. The lubricating oil in the fixed oil pipe 29 passes through the oil hose 26 and the oil hose 12 and enters the lubricating oil tank 20 again. At the same time, the oil pump and vacuum pump assembly 6 extracts the air in the vacuum tank 15, and the air in the vacuum tank 15 passes through the exhaust pipe 14, the exhaust hose 27, the fixed air pipe 29 in turn. 28 and the one-way valve 35 enter the oil pump and vacuum pump assembly body 6 and are discharged to the outside. After the oil pump and vacuum pump assembly body 6 runs stably, the flow meter 13 can be used to determine whether the oil discharge performance of the oil pump and vacuum pump assembly body 6 is qualified, and the vacuum degree measuring instrument 16 can be used to determine whether the vacuum performance of the oil pump and vacuum pump assembly body 6 is qualified, thereby realizing the function of simultaneously detecting the vacuum degree and oil discharge performance of the oil pump and vacuum pump assembly body 6, eliminating the process of switching the oil pump and vacuum pump assembly body 6 between different detection devices, greatly shortening the detection cycle, and further improving the detection efficiency;

[0056] During the process of testing the vacuum performance of the oil pump and vacuum pump assembly 6, the vacuum tank 15 is again evacuated to a vacuum state, and can then be used to test the valve opening pressure of the check valve 35 in the next oil pump and vacuum pump assembly 6 to be tested. The device can evacuate the vacuum tank 15 to a vacuum state without the aid of an external vacuum pumping device, thereby simplifying the operating procedures of the check valve 35 opening test and further improving the practicability of the device.

[0057] During the initial operation of the oil pump and vacuum pump assembly 6, part of the extracted lubricating oil enters the lubricating oil port 33 of the oil pump and vacuum pump assembly 6 through the oil inlet pipe 25, and then can lubricate the vacuum pump part of the oil pump and vacuum pump assembly 6, thereby realizing the function of protecting the oil pump and vacuum pump assembly 6 during the detection process, and further improving the practicability of the device.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A comprehensive performance testing device for an automobile oil pump and vacuum pump assembly, characterized in that: The test bench (1) comprises a fixed L-shaped plate (7) on the top of the test bench (1), a mounting groove (5) extending through the end of the fixed L-shaped plate (7), a lifting plate (4) arranged to slide vertically on the inner wall of the fixed L-shaped plate (7), four positioning threaded pipe seats (24) fixedly arranged on the bottom of the lifting plate (4), the arrangement of the four positioning threaded pipe seats (24) being the same as the arrangement of the four positioning holes (32) of the oil pump and vacuum pump assembly (6), and a fixed oil pipe (29) and a fixed air pipe (32) fixedly arranged on the top of the lifting plate (4). (28) and the oil inlet pipe (25), the bottom ends of the fixed oil pipe (29), the fixed air pipe (28) and the oil inlet pipe (25) all extend downward and are flush with the bottom of the lifting plate (4), the upper end of the oil inlet pipe (25) is connected to the fixed oil pipe (29), the arrangement of the lower ends of the fixed oil pipe (29), the fixed air pipe (28) and the oil inlet pipe (25) corresponds to the same arrangement as the oil discharge port (36), the air extraction port (34) and the lubricating oil port (33) of the oil pump and vacuum pump assembly (6), and the top of the fixed L-shaped plate (7) is fixedly penetrated An oil pipe (12) and an air extraction pipe (14) are provided. The oil pipe (12) is connected to a fixed oil pipe (29) via an oil hose (26). The air extraction pipe (14) is connected to a fixed air pipe (28) via an air extraction hose (27). A lubricating oil tank (20) having an opening at the top is fixedly provided at the bottom of the test bench (1). A avoidance groove (21) is provided at a position of the bottom of the test bench (1) located inside the lubricating oil tank (20). One of the ports of the oil pipe (12) passes through the test bench (1) and is connected to the lubricating oil tank (20). The oil pipe (12) is provided with a flow meter (13), a U-shaped seat (18) is fixedly provided on the top of the test bench (1), a vacuum tank (15) is fixedly provided on the top of the U-shaped seat (18), the vacuum tank (15) is connected to the exhaust pipe (14), a vacuum degree measuring instrument (16) connected to the inner cavity of the vacuum tank (15) is fixedly provided on the outer wall of the vacuum tank (15), a detection component (17) for detecting the valve opening pressure of the one-way valve (35) is provided on the top of the U-shaped seat (18), and the detection component (17) is connected to the vacuum tank (15); The detection assembly (17) comprises a fixed block (56) fixedly connected to the top of the U-shaped seat (18), the fixed block (56) having a communication groove (53) therein, and opposite ends of the fixed block (56) are fixedly connected to ventilation pipes (54) connected to the communication groove (53), one of the ventilation pipes (54) being provided with a first control valve (55) and connected to the vacuum tank (15), the exhaust pipe (14) being provided with a second control valve (19), and the upper end of the other ventilation pipe (54) being fixedly connected to a lower fixed cylinder (63) arranged in communication, the top of the lower fixed cylinder (63) The lower fixed cylinder (63) is provided with an upper fixed cylinder (59) with an opening at the top, and a circular hole (62) is provided at the bottom of the upper fixed cylinder (59). The lower outer wall of the upper fixed cylinder (59) and the upper outer wall of the lower fixed cylinder (63) are both fixedly sleeved with flanges (60), and the two flanges (60) are fixedly connected by a plurality of fixing bolts (61). The upper port of the upper fixed cylinder (59) is fixedly provided with a first negative pressure gauge (58) arranged in communication, and the top of the fixed block (56) is provided with a second negative pressure gauge (57) connected to the connecting groove (53).

2. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 1 is characterized in that: A driving assembly (3) for driving a driving sprocket (31) of the oil pump and vacuum pump assembly (6) and two bolt tightening assemblies (2) for fixing the oil pump and vacuum pump assembly (6) are provided on the top of the testing platform (1); the two bolt tightening assemblies (2) are located on both sides of the fixed L-shaped plate (7) and are arranged facing each other.

3. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 2 is characterized in that: The bolt tightening assembly (2) comprises a movable plate (37) horizontally slidably connected to the top of the inspection platform (1); a sliding plate (39) arranged to slide vertically is provided at the end of the movable plate (37); two rotating cylinders (40) arranged to rotate along a plumb line are provided at the top of the sliding plate (39); a lifting rod (42) vertically slidably connected to the rotating cylinder (40) is passed through the top of the rotating cylinder (40); a magnetic sleeve (43) is fixedly connected to the top of the lifting rod (42); a positioning bolt (44) magnetically connected to the magnetic sleeve (43) is provided inside the magnetic sleeve (43); a built-in compression spring (41) is provided inside the rotating cylinder (40); two ends of the built-in compression spring (41) are correspondingly abutted against the lifting rod (42) and the rotating cylinder (40).

4. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 2 is characterized in that: The driving assembly (3) comprises two support plates (52) fixedly connected to the top of the detection platform (1), the two support plates (52) being located on both sides of the fixed L-shaped plate (7), the ends of the support plates (52) being penetrated by a sliding rod (51) arranged to slide horizontally, the two ends of the sliding rod (51) being respectively fixedly connected to a U-shaped plate (48) and a baffle (50), the two U-shaped plates (48) being located between the two support plates (52) and arranged facing each other, the sliding rod (51) being sleeved with a return compression spring (49), the two ends of the return compression spring (49) correspondingly contacting the support plates (52) and the baffle (50). The U-shaped plate (48) is provided with a rotating column (47) rotatably arranged along a horizontal line, and the two ends of the rotating column (47) are rotatably connected to the relative inner walls of the U-shaped plate (48). The outer wall of the rotating column (47) is provided with an annular groove (46) along the circumferential direction. A fixed plate (9) is fixedly provided on the top of the fixed L-shaped plate (7). The end of the fixed plate (9) is provided with a driving sprocket (11) rotatably arranged along a horizontal line. The driving sprocket (11) is connected to the two rotating columns (47) through a chain (10), and a partial area of ​​the chain (10) is located in the annular groove (46).

5. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 1 is characterized in that: Two vertically arranged lifting and telescopic cylinders (23) are fixedly provided on the top of the detection platform (1), and the telescopic ends of the lifting and telescopic cylinders (23) are fixedly connected to the lifting plate (4).

6. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 3 is characterized in that: Two horizontally arranged electrically controlled telescopic cylinders (22) are fixedly provided on the top of the detection platform (1), and the telescopic ends of the two electrically controlled telescopic cylinders (22) are fixedly connected to the two movable plates (37) respectively.

7. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 3 is characterized in that: A vertically arranged driving telescopic cylinder (45) is fixedly provided at the end of the movable plate (37), and the telescopic end of the driving telescopic cylinder (45) is fixedly connected to the sliding plate (39).

8. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 3 is characterized in that: Two servo motors (38) are fixedly disposed at the bottom of the sliding plate (39), and output ends of the two servo motors (38) pass through the sliding plate (39) and are fixedly connected to the two rotating cylinders (40) respectively.

9. The comprehensive performance testing device for an automobile oil pump and vacuum pump assembly according to claim 4, characterized in that: A driving motor (8) is fixedly provided on the top of the fixed L-shaped plate (7), and an output end of the driving motor (8) passes through the fixed plate (9) and is fixedly connected to the driving sprocket (11).

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