A driving tooling for the test of an oil pump with a reaction shaft

Abstract

A driving tooling for testing an oil pump with a reaction shaft belongs to the technical field of oil pump testing equipment. It can effectively avoid the obstruction of the reaction shaft and directly drive the oil pump for testing the oil pump. The oil pump test piece mounting plate is fixedly connected to the test bench through a positioning sleeve, the rotating shaft is fixed on the driving shaft of the test bench by screws, the driving fork adopts a hollow thin-walled structure and is slidably sleeved on the rotating shaft, one end of the driving fork is connected to the rotating shaft by a flat square, and the other end of the driving fork adopts a fork-shaped structure for driving the rotor on the oil pump with a reaction shaft. The driving fork positioning sleeve is sleeved on the driving fork through a bearing, and the bearing end cover fixes the bearing on the driving fork positioning sleeve. The invention can effectively avoid the obstruction of the reaction shaft and directly drive the oil pump for testing the oil pump.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil pump test equipment, and particularly relates to a driving tooling for testing an oil pump with a reaction shaft. Background Art

[0002] The oil pump continuously sends oil to the friction surfaces of machine parts at a certain pressure and flow rate. The oil pump is an important component of the engine, and its working performance and service life have an important impact on the performance indicators, working reliability, and service life of the entire engine. In order to provide an oil pump that is relatively perfect in terms of structure and performance for the engine, theoretical calculation alone is not enough, and improvement must also be carried out through experimental verification. This requires necessary tests.

[0003] A driving tooling is used on the oil pump test bench to drive the oil pump to operate and complete relevant tests. However, for some oil pumps with a reaction shaft, due to the obstruction of the reaction shaft, it is impossible to directly extend the drive shaft from the test bench for testing. Summary of the Invention

[0004] The purpose of the present invention is to provide a driving tooling for testing an oil pump with a reaction shaft, which can effectively avoid the obstruction of the reaction shaft and directly drive the oil pump for testing the oil pump.

[0005] The technical solution adopted by the present invention is: a driving tooling for testing an oil pump with a reaction shaft, including an oil pump specimen mounting plate, a positioning sleeve, a rotating shaft, a driving fork, a driving fork positioning sleeve, and a bearing end cover; the oil pump specimen mounting plate is fixedly connected to the test bench through the positioning sleeve, the rotating shaft is fixed to the drive shaft of the test bench by screws, the driving fork adopts a hollow thin-walled structure and is slidably sleeved on the rotating shaft, one end of the driving fork is connected to the rotating shaft by a flat square, the other end of the driving fork adopts a fork-shaped structure for driving the rotor on the oil pump with a reaction shaft, the driving fork positioning sleeve is sleeved on the driving fork through a bearing, and the bearing end cover fixes the bearing on the driving fork positioning sleeve.

[0006] The beneficial effects of the present invention are as follows:

[0007] The present invention can effectively avoid the obstruction of the reaction shaft and directly drive the oil pump for testing the oil pump;

[0008] The present invention can fix the position of the workpiece through the specimen mounting plate, ensure that the oil inlet and outlet holes of the workpiece are aligned with the oil inlet and outlet holes of the mounting plate, and minimize the flow loss of the product;

[0009] The present invention positions the rotating shaft through the strip-shaped groove, effectively prevents the relative crosstalk of the rotating shaft, and greatly reduces the measured rotation error of the rotating shaft;

[0010] The present invention positions through the rotating shaft and the driving fork, ensuring the coaxiality between the workpiece and the driving device, and reducing the test error caused by radial runout;

[0011] In the bearing end cover of the present invention, a bearing is installed. The bearing adopts a quick-change mechanism, which can quickly change the bearing and improve the maintenance speed;

[0012] The present invention effectively solves the difficulty that the oil pump mounting surface and the oil pump driving surface are not in the same direction, and has a relatively simple structure and low manufacturing and processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present invention;

[0014] Figure 2 is a schematic structural diagram of the driving fork of the present invention;

[0015] Figure 3 is a schematic structural diagram of the rotating shaft of the present invention;

[0016] Wherein: 1. Oil pump test piece mounting plate; 2. Positioning sleeve; 3. Rotating shaft; 4. Driving fork; 5. Driving fork positioning sleeve; 6. Bearing end cover. DETAILED DESCRIPTION OF THE INVENTION

[0017] As Figure 1 shown, a driving tool for an oil pump test with a reaction shaft includes an oil pump test piece mounting plate 1, a positioning sleeve 2, a rotating shaft 3, a driving fork 4, a driving fork positioning sleeve 5 and a bearing end cover 6; the oil pump test piece mounting plate 1 is fixedly connected to the test bench through the positioning sleeve 2, the rotating shaft 3 is fixed to the driving shaft of the test bench by screws, the driving fork 4 adopts a hollow thin-wall structure and is slidably sleeved on the rotating shaft 3, one end of the driving fork 4 is connected to the rotating shaft 3 by a flat square, and the other end of the driving fork 4 adopts a fork-shaped structure for driving the rotor on the oil pump with a reaction shaft. The driving fork positioning sleeve 5 is sleeved on the driving fork 4 through a bearing, and the bearing end cover 6 fixes the bearing on the driving fork positioning sleeve 5. The bearing adopts a quick-change mechanism (this is the prior art here).

[0018] As Figure 2 、 Figure 3 shown, the inner cavity at one end of the driving fork 4 is a flat square cavity that matches the flat square end of the rotating shaft 3, and two insertion buttons are provided at the other end of the driving fork 4 for inserting into the gap between the rotor and the housing of the shaft oil pump to drive the rotor to rotate.

[0019] Principle: The mounting plate 1 of the oil pump test piece is fixedly connected to the test bench through the positioning sleeve 2. The oil pump with a reaction shaft is mounted on the mounting plate 1 of the oil pump test piece. The rotating shaft 3 is fixed to the driving shaft of the test bench by screws. The driving fork 4 and the driving fork positioning sleeve 5 are connected using bearings, and the bearings are fixed to the driving fork positioning sleeve 5 using the bearing end cover 6. The structure of the driving fork is buckled on the oil pump, and the flat structure end of the rotating shaft 3 passes through the flat structure of the driving fork 4. At this time, when the rotating shaft 3 is rotated, the obstruction of the reaction shaft can be avoided, and the oil pump can be directly driven through the driving fork 4 for testing the oil pump.

[0020] A circular hole is provided in the middle of the mounting plate 1 of the oil pump test piece for slidingly fitting and mounting the positioning sleeve 2, and it is fixed with screws.

[0021] Mounting threads, positioning holes, inlet and outlet ports required for mounting and positioning the oil pump test are provided on the mounting plate 1 of the oil pump test piece.

[0022] The rotating shaft 3 uses a circular hole to position the axis of the driving shaft of the test bench and is provided with a strip-shaped groove, and is connected to the driving shaft through the strip-shaped groove and the strip-shaped key. (The strip-shaped groove is a prior art)

[0023] The driving fork positioning sleeve 5 adopts a sleeve structure with two-stage stepped circular holes in the middle and is in sliding fit with the oil pump with a reaction shaft.

[0024] The bearing end cover 6 adopts a circular ring sheet structure and is fixedly connected to the driving fork positioning sleeve 5 with screws.

[0025] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A driving tooling for the test of an oil pump with a reaction shaft, characterized in that: It includes an oil pump test piece mounting plate (1), a positioning sleeve (2), a rotating shaft (3), a driving fork (4), a driving fork positioning sleeve (5) and a bearing end cover (6); the oil pump test piece mounting plate (1) is fixedly connected to the test bench through the positioning sleeve (2), the rotating shaft (3) is fixed to the driving shaft of the test bench by screws, the driving fork (4) adopts a hollow thin-walled structure and is slidably sleeved on the rotating shaft (3), one end of the driving fork (4) is connected to the rotating shaft (3) by a flat square, the other end of the driving fork (4) adopts a fork-shaped structure for driving the rotor on the oil pump with a reaction shaft, the driving fork positioning sleeve (5) is sleeved on the driving fork (4) through a bearing, and the bearing end cover (6) fixes the bearing on the driving fork positioning sleeve (5). The inner cavity at one end of the driving fork (4) is a flat square cavity that matches the flat square end of the rotating shaft (3), and two insertion buttons are provided at the other end of the driving fork (4) for inserting into the gap between the rotor and the housing of the shaft oil pump to drive the rotor to rotate. A round hole is opened in the middle of the oil pump test piece mounting plate (1) for slidably mounting the positioning sleeve (2) and fixing it with screws.

2. The driving tooling for the test of an oil pump with a reaction shaft according to claim 1, characterized in that: Mounting threads, positioning holes, inlet and outlet ports required for mounting and positioning the oil pump test are opened on the oil pump test piece mounting plate (1).

3. The driving tooling for the test of an oil pump with a reaction shaft according to claim 1, characterized in that: The rotating shaft (3) uses a round hole to position the axis of the driving shaft of the test bench and is provided with a strip-shaped groove.

4. The driving tooling for the test of an oil pump with a reaction shaft according to claim 1, characterized in that: The driving fork positioning sleeve (5) adopts a sleeve structure with two-stage stepped round holes in the middle and is slidably matched with the oil pump with a reaction shaft.

5. The driving tooling for the test of an oil pump with a reaction shaft according to claim 1, characterized in that: The bearing end cover (6) adopts a circular ring sheet structure and is fixedly connected to the driving fork positioning sleeve (5) by screws.

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