CN110118654A - A kind of auto pump shaft connecting bearing testing machine - Google Patents

Abstract

The present invention proposes a test machine for shaft-connected bearings of automobile water pumps. Sex test tooling assembly, mechanical servo loading assembly; torque test assembly is composed of drive servo motor 2, coupling, transmission shaft system, torque sensor, plum blossom coupling, torque test tooling assembly connected in sequence, and the torque test tooling assembly is installed with Test bearings. Its beneficial effects are: in the durability test, the present invention adopts the driving mode of two-stage belt transmission, so that the transmission output form becomes a constant torque output, and the driving ability of the driving motor is improved; the loading system adopts a mechanical servo loading form, and this loading The method has the advantages of fast loading response speed, high control precision, simple structure and small volume of the whole device.

Description

An automobile water pump shaft-connected bearing testing machine

technical field

The invention relates to a bearing testing machine, in particular to an automobile water pump shaft-connected bearing testing machine.

Background technique

The automotive water pump shaft bearing testing machine can simulate the actual working conditions of the water pump shaft bearing, and conduct life tests under the conditions of high temperature, high speed and predetermined tension. It can test the waterproof sealing performance or assembly test of the shaft coupling bearing of the water pump. While the testing machine is doing the life test of the shaft coupling bearing of the water pump, the detection test of the starting torque of the shaft coupling bearing of the water pump can be realized on the test device on the other side of the testing machine.

In the high-speed test of the existing bearing testing machine, the high-speed electric spindle is generally used to directly drive the test spindle to rotate. This method often does not carry the test load during the high-load and low-speed test, resulting in some tests that cannot be realized.

Since the shaft-connected bearing of the automobile water pump is a high-speed precision bearing, its assembly accuracy requirements are much higher than those of conventional bearings, and it is also a key factor for whether the tested bearing can simulate the actual working conditions to the greatest extent.

Contents of the invention

In order to solve the problems existing in the prior art, the invention proposes an automobile water pump shaft-connected bearing testing machine.

The technical scheme of the present invention is achieved in this way: a kind of automobile water pump shaft-connected bearing test machine, its composition comprises: test bench, is provided with durability test assembly and torque test assembly on described test bench, described durability The test assembly consists of a driving servo motor 1, a transmission speed-up assembly, a durability test tooling assembly, and a mechanical servo loading assembly. The transmission speed-up assembly includes a high-speed mechanical shaft and a high-speed mechanical shaft pulley connected to the high-speed mechanical shaft. The durability test tool assembly includes a test base and a test bearing installed on the test base, and the mechanical servo loading assembly is composed of a servo motor installed on the test bench and a worm gear driven by the servo motor. The driving servo motor drives the high-speed mechanical shaft in the transmission speed-up assembly through the primary belt, and the pulley of the high-speed mechanical shaft drives the test bearing to rotate through the secondary belt. The lower part of the durability test tooling assembly is set There is a guide rail, and the loading cylinder in the mechanical servo loading assembly drives the durability test tool assembly to move on the guide rail;

The torque test assembly is composed of a driving servo motor 2, a shaft coupling, a transmission shaft system, a plum blossom coupling, a torque sensor, and a torque test tooling assembly, and the test bearing is installed in the torque test tooling assembly.

The servo motor drives the worm gear to load the test bearing.

The durability test tooling assembly includes a tooling seat, a durable tooling, a circlip, a tooling connection sleeve, and a multi-ribbed pulley. The lower end of the durability tooling is fixed to the tooling seat by bolts, and the ribbed pulley The frock connection sleeve connected by bolts is installed on the front part of the durable frock, and an elastic circlip is also arranged between the front end of the durable frock and the ribbed pulley, and the test bearing is installed on the durable frock. In the tooling, its front end is fixed with the connecting sleeve of the tooling.

The beneficial effects of the present invention are: the testing machine can realize the detection test of the starting torque of the shaft coupling bearing of the water pump on the test device on the other side of the testing machine while the testing machine is doing the life test of the shaft coupling bearing of the water pump; in the durability test, The present invention adopts the driving mode of two-stage belt transmission, so that the transmission output form becomes a constant torque output, which improves the driving ability of the driving motor; The test bearing is used for loading. This loading method has the advantages of fast loading response speed, high control precision, simple structure of the whole device, and small volume.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of durability test assembly;

Figure 3 is a schematic structural view of the durability test tooling assembly.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 3, an automotive water pump shaft-connected bearing testing machine is composed of: a test bench 1, a durability test component 2 and a torque test component 3 are arranged on the test bench 1, and the durability test component 2 Drive servo motor 4, transmission speed-up assembly 5, durability test tooling assembly 6, mechanical servo loading assembly 7, transmission speed-up assembly 5 includes high-speed mechanical shaft 5-1 and high-speed mechanical shaft 5-1 connected The mechanical shaft pulley 5-2, the durability test tooling assembly 6 includes a test base 6-1 and a test bearing 8 installed on the test base 6-1, and the mechanical servo loading assembly 7 is composed of a servo motor installed on the test bench 1 9 and the worm gear driven by the servo motor 9, the driving servo motor 4 drives the high-speed mechanical shaft 5-1 in the transmission speed-up assembly 5 through the primary belt 4-1, and the high-speed mechanical shaft 5-1 drives the high-speed mechanical shaft belt Wheel 5-2, the high-speed mechanical shaft pulley 5-2 drives the test bearing 8 to rotate through the secondary belt 5-3 transmission, and the lower part of the durability test tooling assembly 6 is provided with a guide rail 10, when the servo motor 9 in the mechanical servo loading assembly 7 When driving the worm gear and worm to drive the durability test tooling 6 components to move on the guide rail 10, the tension force is loaded through the belt. Since the test body is separated from the loading movement, this design can meet the general test and meet the requirements of different models. Test requirements for water pump shaft coupling bearing testing machine;

In the durability test, the AC frequency conversion speed regulation method is used for speed regulation, so that the maximum speed of the primary belt 4-1 transmission is 7500rpm, the maximum speed of the secondary belt 5-3 transmission is 15000rpm, and the driving servo motor 4 is selected 4KW , 3000rpm AC variable frequency motor, the characteristic of this motor is that the speed regulation output from low frequency to high frequency is in the form of constant power, which can meet the requirements of low speed test or high speed test with load and can ensure that the speed does not lose or run out of control; The primary belt 4-1 and the secondary belt 5-3 use multi-ribbed belts, which are characterized by low noise during high-speed transmission speed. After the high-speed mechanical shaft 5-1 is installed on the test stand 6-1, the output shafts on both sides The radial runout is less than 0.02mm, and the axial runout is less than 0.05mm. The test bearing 8 is guaranteed to be parallel to the high-speed mechanical shaft 5-1, and the distance between them is adjusted by two linear sliding guide rails 10.

The torque test assembly 3 is composed of a driving servo motor 11, a coupling 12, a transmission shaft 13, a plum blossom coupling 14, a torque sensor 15, and a torque test tooling assembly 16 connected in sequence, and a test bearing is installed in the torque test tooling assembly 16 8. Drive the servo motor 2 11 to transmit the speed and its starting torque to the transmission shaft system 13 through the straight coupling 12, filter the vibration through the transmission shaft system 13, and then transmit it to the torque sensor 15 through the plum blossom coupling 14, the torque sensor The other end of 15 is connected with the test bearing 8 in the torque test tool assembly 16, thereby realizing the detection of the starting torque of the test bearing 8.

The servo motor 9 drives the worm gear to load the test bearing 8 .

The device is also equipped with electrical control system, measurement system, computer system, water circulation system, heating system and other auxiliary measurement systems. Speed system, loading system, heating system.

Durability test tooling assembly 6 consists of test seat 6-1, durability tooling 6-2, circlip 6-3, tooling connection sleeve 6-4, ribbed pulley 6-5, tooling seat 6-6, tooling The seat 6-6 is fixed in the test seat 6-1, the lower end of the durable tooling 6-2 is fixed to the tooling seat 6-6 by bolts, and the ribbed pulley 6-5 is installed on the durable The front part of the durable tooling 6-2 is also provided with a circlip 6-3 between the front end of the durable tooling 6-2 and the ribbed pulley 6-5, and the test bearing 8 is installed in the durable tooling 6-2. Its front end is fixed with frock connecting sleeve 6-4.

The installation steps of the durability test tooling assembly 6 are as follows:

1. Before installation, the test bearing 8. Clean all parts of the test tooling with gasoline to ensure that the parts will not be scratched by dust or other sundries during the installation process;

2. After the cleaning work is completed, apply lubricating grease evenly on the outside of the outer ring of the test bearing 8, and then press the long end of the test bearing 8 into the inner cavity of the durable tooling 6-2 for about 1-2 mm to fix it. During the insertion process, pay attention to ensure that the center of rotation of the test bearing 8 is coaxial with the inner cavity, and then use the installation sleeve to press the test bearing 8 in by repeatedly squeezing the outer ring of the bearing on a press with a working pressure of not less than 1 ton. To the interior of durable tooling 6-2;

3. After confirming that the test bearing 8 and the durability tooling 6-2 are in place, install the circlip 6-3 for the hole into the fixing groove on the outside with a suitable size circlip pliers for the hole;

4. Spread lubricating grease evenly on the outside of the short end of the inner ring of the test bearing 8, and use a special installation tool to connect the tooling connection sleeve 6-4 with the short end of the inner ring of the test bearing 8 in place on the press;

5. Spread lubricating grease evenly on the outside of the tooling connecting sleeve 6-4, and connect the tooling connecting sleeve 6-4 and the ribbed pulley 6-5 in place on the press;

6. After the installation is completed according to the above steps, connect the assembly with the tooling tripod and fasten it. The temperature measuring hole should be in a vertical upward position during installation; Whether the runout and axial runout meet the requirements of the testing machine.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (3)

1. a kind of auto pump shaft connecting bearing testing machine, composition includes: test-bed, it is characterised in that: in the testing stand Frame is equipped with durability test component and torsional moment test component, and the durability test component is by driving servo motor one, transmission Speedup component, durability test tool component, mechnical servo charging assembly, the transmission speedup component include high speed machine axis with And the high speed machine shaft pulley being connected with the high speed machine axis, the durability test tool component include test stand and peace Test bearing on test stand, the mechnical servo charging assembly by the servo motor that is mounted on the test-bed with And be made of the worm and gear that the servo motor drives, the driving servo motor drives the transmission to increase by level-one belt The high speed machine axis in fast component, the high speed machine shaft pulley drive the test bearing to rotate by second belt, Durability test tool component lower part is equipped with guide rail, and the load cylinder in the mechnical servo charging assembly drives institute Durability test tool component is stated to move on the guide rail；

The torsional moment test component is by driving servo motor two, shaft coupling, drive shaft system, torque sensor, plum coupling, torsion Square test tool component is sequentially connected composition, is equipped with the test bearing in the torsional moment test tool component.

2. auto pump shaft connecting bearing testing machine according to claim 1, it is characterised in that: the servo motor drives snail Worm and gear loads the test bearing.

3. auto pump shaft connecting bearing testing machine according to claim 1, it is characterised in that: the durability test tooling Component includes working base, durability tooling, circlip, tooling connector sleeve, multi-wedge belt pulley composition, durability tooling lower end It is fixed by bolt and the working base, the tooling connector sleeve that the multi-wedge belt pulley is bolted is mounted on described resistance to The front of long property tooling, is additionally provided with circlip, the test between durability tooling front end and the multi-wedge belt pulley Bearing is mounted in durability tooling, and front end is fixed with the tooling connector sleeve.