Impact test mechanism of steering oil pump

Abstract

The utility model belongs to the technical field of impact test mechanisms, and particularly relates to an impact test mechanism of a steering oil pump, which comprises a bottom plate, the lower end of the bottom plate is fixedly connected with a plurality of supporting legs, and the bottom plate is fixedly connected with a first supporting seat and a second supporting seat which are positioned on two sides of the right end of the bottom plate. A first rotating shaft is movably inserted into the end of the first supporting seat and the end of the second supporting seat, and the outer wall of the first rotating shaft is fixedly sleeved with a first cam and a second cam which are located between the first supporting seat and the second supporting seat. The utility model has the advantages that the first cam, the second cam, the third cam and the fourth cam are respectively linked with the corresponding pressing plates on the supporting plate when working, and the pressing plates are driven to periodically fluctuate through the up-and-down fluctuation of the vertex angles of the cams, so that the steering oil pump on the supporting plate shakes to simulate the bumping in the actual condition, and the accuracy of the oil pump impact test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of impact test mechanisms, in particular to an impact test mechanism for a steering oil pump. Background Art

[0002] A steering oil pump is a hydraulic pump used to provide power steering for cars or other vehicles. It is usually installed on the engine and connected to the engine through a belt, chain or gear. The main function of the steering oil pump is to generate and provide the required hydraulic force to make the vehicle's steering system easier to operate.

[0003] At present, when the impact test of the steering oil pump is carried out, the loading and unloading of the oil pump is realized only by controlling the electromagnetic proportional valve by a computer. The bumps caused by the actual road surface on the oil pump are not simulated, which reduces the accuracy of the oil pump impact test.

[0004] In order to solve the above problems, we proposed an impact test mechanism for steering oil pump. Utility Model Content

[0005] The utility model aims to solve the problems in the background technology and proposes an impact test mechanism for a steering oil pump.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an impact test mechanism for a steering oil pump, comprising a base plate, a plurality of support legs are fixedly connected to the lower end of the base plate, a support seat 1 and a support seat 2 located on both sides of the right end of the base plate are fixedly connected to the base plate, a rotating shaft 1 is movably inserted at the ends of the support seat 1 and the support seat 2, a cam 1 and a cam 2 located between the support seat 1 and the support seat 2 are fixedly sleeved on the outer wall of the rotating shaft 1, the cam 1 is located at the rear side of the cam 2, a support seat 3 and a support seat 4 located on both sides of the left end of the base plate are fixedly connected to the base plate, a rotating shaft 2 is movably inserted at the ends of the support seat 3 and the support seat 4, the The outer wall fixing sleeve of rotating shaft two is provided with cam three and cam four located between support seat three and support seat four, and the cam three is located on the rear side of cam four, and the outer wall fixing sleeve of rotating shaft one is provided with roller one located between cam one and cam two, and the outer wall fixing sleeve of rotating shaft two is provided with roller two located between cam three and cam four, and a vertically upward hydraulic cylinder one and a driving rod one thereof are fixedly arranged on the bottom plate, and the outer side sleeve of the driving rod one is provided with a spring one, the lower end of the spring one is fixedly connected to the outer wall of the hydraulic cylinder one, and the upper end of the spring one is fixedly connected to a support plate, and pressure plates located on the upper sides of cam one, cam two, cam three and cam four are respectively fixed on both sides of the support plate.

[0007] In the above-mentioned impact test mechanism for a steering oil pump, the roller one and the roller two are respectively located at the rear side and the front side of the vertical plane in the bottom plate.

[0008] In the above-mentioned impact test mechanism of a steering oil pump, a transmission device is arranged on the base plate, and the transmission device includes a motor fixed on the upper side of the base plate, the motor is located on the rear side of the hydraulic cylinder one, and the driving end fixed sleeve of the motor is provided with roller three and roller four, a belt one is commonly sleeved between roller three and roller one, and a belt two is commonly sleeved between roller four and roller two.

[0009] In the above-mentioned impact test mechanism of a steering oil pump, two vertically upward hydraulic cylinders and two driving rods thereof are symmetrically fixed on the left and right sides of the motor, and two springs are sleeved on the outer side of the two driving rods. The upper and lower ends of the two springs are respectively fixedly connected to the support plate and the outer wall of the two hydraulic cylinders.

[0010] In the above-mentioned impact test mechanism for a steering oil pump, the directions of the top angles of the cam one, the cam two, the cam three and the cam four are different.

[0011] In the above-mentioned impact test mechanism for a steering oil pump, the steering oil pump to be tested and its oil circuit pressure measuring equipment are fixed on the support plate.

[0012] Compared with the existing technology, the advantages of the impact test mechanism of the steering oil pump are:

[0013] The cams 1, 2, 3 and 4 in the utility model are respectively linked with the corresponding pressure plates on the support plate when working, and the pressure plates are driven to fluctuate periodically through the up and down fluctuations of the top angles of the cams, thereby causing the steering oil pump on the support plate to shake, simulating the bumps in actual conditions and improving the accuracy of the oil pump impact test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front perspective view of an impact test mechanism for a steering oil pump proposed by the utility model;

[0015] Figure 2 A rear perspective view of an impact test mechanism for a steering oil pump proposed by the utility model;

[0016] Figure 3 for Figure 1 Enlarged view of part A.

[0017] In the figure: 1 bottom plate, 2 supporting legs, 3 supporting seat 1, 4 rotating shaft 1, 5 cam 1, 6 supporting seat 3, 7 rotating shaft 2, 8 cam 4, 9 roller 1, 10 hydraulic cylinder 1, 11 driving rod 1, 12 spring 1, 13 supporting plate, 14 pressure plate, 15 motor, 16 roller 3, 17 roller 4, 18 belt 1, 19 belt 2, 20 hydraulic cylinder 2, 21 driving rod 2, 22 spring 2. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-Figure 3 A shock test mechanism for a steering oil pump comprises a bottom plate 1, a plurality of support legs 2 are fixedly connected to the lower end of the bottom plate 1, a support seat 1 3 and a support seat 2 are fixedly connected to the bottom plate 1, ends of the support seat 1 3 and the support seat 2 are movably inserted with a rotating shaft 1 4, the rotating shaft 1 4 is horizontally arranged, a cam 1 5 and a cam 2 are fixedly sleeved on the outer wall of the rotating shaft 1 4, the cam 1 5 is located at the rear side of the cam 2, and the bottom plate 1 is fixedly connected to the two sides of the left end of the bottom plate 1. The support seat three 6 and the support seat four, the ends of the support seat three 6 and the support seat four are movably inserted with a rotating shaft two 7, the rotating shaft two 7 is horizontally arranged, and the outer wall fixed sleeve of the rotating shaft two 7 is provided with a cam three and a cam four 8 located between the support seat three 6 and the support seat four, the cam three is located on the rear side of the cam four 8, and the directions of the top angles of the cam one 5, the cam two, the cam three and the cam four 8 are different. When the rotating shaft one 4 and the rotating shaft two 7 rotate at the same time, the top angles of the cam one 5, the cam two, the cam three and the cam four 8 point to different directions at the same time.

[0020] The outer wall fixing sleeve of the rotating shaft 4 is provided with a roller 1 9 located between the cam 1 5 and the cam 2, and the outer wall fixing sleeve of the rotating shaft 2 7 is provided with a roller 2 located between the cam 3 and the cam 4 8. The roller 1 9 and the roller 2 are respectively located at the rear side and the front side of the vertical plane of the bottom plate 1. The orientation of the vertical plane here is the left-right orientation of the vertical plane, that is, to ensure that the positions of the roller 1 9 and the roller 2 are staggered to avoid interference in movement.

[0021] A vertically upward hydraulic cylinder 10 and a driving rod 11 are fixedly arranged on the base plate 1, a spring 12 is sleeved on the outer side of the driving rod 11, the lower end of the spring 12 is fixedly connected to the outer wall of the hydraulic cylinder 10, the upper end of the spring 12 is fixedly connected to a support plate 13, and pressure plates 14 located on the upper sides of cam 15, cam 2, cam 3 and cam 4 8 are respectively fixed on both sides of the support plate 13. When the end of the driving rod 11 is located below the rotating shaft 14 and the rotating shaft 2 7, under the elastic action of the spring 12 itself, the pressure plate 14 on the support plate 13 is squeezed and contacted with the outer walls of cam 15, cam 2, cam 3 and cam 4 8 respectively.

[0022] A transmission device is provided on the bottom plate 1, and the transmission device includes a motor 15 fixed on the upper side of the bottom plate 1. The motor 15 is located at the rear side of the hydraulic cylinder 10. The driving end of the motor 15 is fixedly sleeved with a roller 3 16 and a roller 4 17. A belt 18 is sleeved between the roller 3 16 and the roller 1 9, and a belt 2 19 is sleeved between the roller 4 17 and the roller 2. In order to improve the stability of the support plate 13, a hydraulic cylinder 20 and a driving rod 21 thereof are symmetrically fixed vertically upward on the left and right sides of the motor 15. A spring 22 is sleeved on the outer side of the driving rod 21. The upper side of the spring 22 The lower ends are fixedly connected to the support plate 13 and the outer walls of the hydraulic cylinder 2 20 respectively. The steering oil pump to be tested and its oil circuit pressure measuring equipment are fixed on the support plate 13. When installing the oil pump and its testing equipment, the hydraulic cylinder 10 and the two hydraulic cylinders 20 are started at the same time, so that the ends of the driving rod 11 and the driving rod 21 push the support plate 13 upward, and the pressure plate 14 leaves the outer walls of the cam 1 5, cam 2, cam 3 and cam 4 8. The spring 12 and the spring 22 are further stretched, and the support plate 13 will also be in a horizontal position, which is convenient for the installation or disassembly of the steering oil pump and its oil circuit pressure measuring equipment.

[0023] After the oil pump and the pressure measuring device are installed and fixed, the ends of the driving rod 11 and the driving rod 21 are dropped to the lower side of the rotating shaft 1 4 and the rotating shaft 2 7, and the spring 12 and the spring 22 drive the support plate 13 to drop, so that the pressure plate 14 is squeezed and contacted with the outer walls of the cam 1 5, the cam 2, the cam 3 and the cam 4 8 respectively. At this time, the spring 12 and the spring 22 are still in a stretched state, and the motor 15 is started, and the roller 3 16 and the roller 4 17 rotate. The roller 1 9 and the roller 2 will also drive the rotating shaft 1 4 and the rotating shaft 2 7 to rotate at the same time under the transmission of the belt 1 18 and the belt 2 19, and the cam 1 5, the cam 2, the cam 3 and the cam 4 8 will rotate accordingly. Since the top angles of the cam 1 5, the cam 2, the cam 3 and the cam 4 8 are in different directions, the corresponding pressure plate 14 will drive the support plate 13 to do periodic ups and downs, simulating the bumps of the actual road surface and improving the accuracy of the oil pump impact test.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impact test mechanism for a steering oil pump, comprising a base plate (1), characterized in that: The lower end of the base plate (1) is fixedly connected to a plurality of support legs (2); the base plate (1) is fixedly connected to a support seat 1 (3) and a support seat 2 located on both sides of the right end of the base plate (1); the ends of the support seat 1 (3) and the support seat 2 are movably inserted with a rotating shaft 1 (4); the outer wall fixed sleeve of the rotating shaft 1 (4) is provided with a cam 1 (5) and a cam 2 located between the support seat 1 (3) and the support seat 2; the cam 1 (5) is located at the rear side of the cam 2; the base plate (1) is fixedly connected to a support seat 3 (6) and a support seat 4 located on both sides of the left end of the base plate (1); the ends of the support seat 3 (6) and the support seat 4 are movably inserted with a rotating shaft 2 (7); the outer wall fixed sleeve of the rotating shaft 2 (7) is provided with a cam 3 and a cam 2 located between the support seat 3 (6) and the support seat 4 Wheel four (8), the cam three is located at the rear side of the cam four (8), the outer wall fixed sleeve of the rotating shaft one (4) is provided with a roller wheel one (9) located between the cam one (5) and the cam two, the outer wall fixed sleeve of the rotating shaft two (7) is provided with a roller wheel two located between the cam three and the cam four (8), a hydraulic cylinder one (10) and a driving rod one (11) vertically upward are fixedly arranged on the bottom plate (1), the outer side sleeve of the driving rod one (11) is provided with a spring one (12), the lower end of the spring one (12) is fixedly connected to the outer wall of the hydraulic cylinder one (10), the upper end of the spring one (12) is fixedly connected to a support plate (13), and pressure plates (14) located on the upper sides of the cam one (5), the cam two, the cam three and the cam four (8) are respectively fixed on both sides of the support plate (13).

2. The impact test mechanism for a steering oil pump according to claim 1, characterized in that: The roller one (9) and the roller two are respectively located at the rear side and the front side of the vertical plane of the bottom plate (1).

3. The impact test mechanism for a steering oil pump according to claim 1, characterized in that: The base plate (1) is provided with a transmission device, the transmission device comprising a motor (15) fixed on the upper side of the base plate (1), the motor (15) being located at the rear side of the hydraulic cylinder (10), a driving end of the motor (15) being fixedly sleeved with a roller three (16) and a roller four (17), a belt one (18) being sleeved between the roller three (16) and the roller one (9), and a belt two (19) being sleeved between the roller four (17) and the roller two.

4. The impact test mechanism for a steering oil pump according to claim 3, characterized in that: A second hydraulic cylinder (20) and a second driving rod (21) thereof are symmetrically fixed vertically upward on the left and right sides of the motor (15); a second spring (22) is sleeved on the outer side of the second driving rod (21); the upper and lower ends of the second spring (22) are respectively fixedly connected to the outer wall of the support plate (13) and the second hydraulic cylinder (20).

5. The impact test mechanism for a steering oil pump according to claim 1, characterized in that: The directions of the top angles of the cam one (5), cam two, cam three and cam four (8) are different.

6. The impact test mechanism for a steering oil pump according to claim 1, characterized in that: The support plate (13) is fixed with a steering oil pump to be tested and an oil circuit pressure measuring device thereof.

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