Tool for HIL rack concentric shaft clamp

Abstract

The utility model relates to the technical field of machinery, in particular to a tool for an HIL rack concentric shaft clamp, which comprises a bottom plate, a fixing seat, a guide rail, an upper sliding block, a lower sliding block, a lower supporting plate, a reinforcing plate, a rubber head, a connecting block and a differential ruler, the top of the bottom plate is provided with the fixing seat, and the inner surface of the fixing seat is provided with the guide rail. Upper sliding blocks and lower sliding blocks are installed at the upper end and the lower end of the guide rail, a reinforcing plate is installed between the two upper sliding blocks, a lower supporting plate is installed between the two lower sliding blocks, a differential ruler is installed on the outer side of a vertical plate of the fixing base, and the measuring end of the differential ruler is connected with the upper sliding blocks or the lower sliding blocks through connecting blocks. Compared with the prior art, when the HIL test is carried out, the axle centers of the steering machine power supply group, the coupler, the torque sensor and the load motor are ensured to be consistent; and after any end of the steering machine power supply group or the load motor is disconnected, the situation that equipment and personnel are damaged due to elliptical rotation is avoided, and the safety of the HIL test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and particularly to a tooling for a concentric shaft fixture of a HIL bench. Background Art

[0002] When performing HIL hardware-in-the-loop testing on EPS, the EPS is fixed on the HIL bench through a fixture. The optical rod shaft of the power assembly steering machine power supply group of the EPS is connected to the load motor of the HIL bench through a coupling. Due to the movable protection structure of the coupling, it is possible that the steering machine power supply group, the coupling, the torque sensor, another coupling, and the load motor are not on the same axis.

[0003] When testing the software inside the EPS, there will be tests of high speed and large torque of the EPS. Under these working conditions, sometimes the coupling between the shaft of the steering machine power supply group and the shaft of the load motor is broken. At this time, since one end is not fixed, oval rotation will occur during rotation, damaging the steering machine power supply group, the torque sensor, and the test bench of the test piece, and even causing personal injury.

[0004] Therefore, it is necessary to design a tooling for a concentric shaft fixture of a HIL bench to make the axes of the steering machine power supply group, the coupling, the torque sensor, and the load motor on the HIL bench consistent, thereby ensuring the safety of HIL testing. Summary of the Invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a tooling for a concentric shaft fixture of a HIL bench to make the axes of the steering machine power supply group, the coupling, the torque sensor, and the load motor on the HIL bench consistent, thereby ensuring the safety of HIL testing.

[0006] To achieve the above purpose, the utility model is a tooling for a concentric shaft fixture of a HIL bench, including a bottom plate, a fixed seat, guide rails, upper sliders, lower sliders, a lower support plate, a reinforcing plate, rubber heads, connecting blocks, and micrometers. A fixed seat is installed on the top of the bottom plate. One guide rail is installed on the inner surface of each vertical plate on both sides of the fixed seat. An upper slider is installed at the upper end of each of the two guide rails. A reinforcing plate is installed between the two upper sliders. A rubber head is installed at the center of the bottom of the reinforcing plate. A micrometer one is installed on the outer side of one vertical plate of the fixed seat. The measuring end of the micrometer one is connected to one end of a connecting block one. The other end of the connecting block one is connected to the upper slider. The connecting block one is slidably connected to the one vertical plate of the fixed seat. A lower slider is installed at the lower end of each of the two guide rails. A lower support plate is installed between the two lower sliders. A micrometer two is installed on the outer side of the other vertical plate of the fixed seat. The measuring end of the micrometer two is connected to one end of a connecting block two. The other end of the connecting block two is connected to the lower slider. The connecting block two is slidably connected to the other vertical plate of the fixed seat.

[0007] The fixed seat is in a mouth shape.

[0008] The bottom plate and the HIL bench are fixed by fasteners. The lower support plate supports the bottom of the torque sensor, and the rubber head abuts against the upper end of the torque sensor.

[0009] On the outer side of the vertical plate on one side of the fixed seat, a first mounting block is further fixed. A first spring screw is installed between the first mounting block and the first connecting block. The two ends of the spring of the first spring screw respectively abut against the lower surface of the first mounting block and the upper surface of the first connecting block.

[0010] On the outer side of the vertical plate on the other side of the fixed seat, a second mounting block is further fixed. A second spring screw is installed between the second mounting block and the second connecting block. The two ends of the spring of the second spring screw respectively abut against the upper surface of the second mounting block and the lower surface of the second connecting block.

[0011] The adjustment precision unit of the first micrometer and the second micrometer is mm.

[0012] Compared with the prior art, the present utility model uses a micrometer in cooperation with a slider to adjust the axis center of the torque sensor, ensuring that the axis centers of the steering gear power unit, the coupling, the torque sensor, and the load motor are consistent during HIL testing; after any one end of the steering gear power unit or the load motor is disconnected, there will be no oval rotation to damage the equipment and injure personnel, improving the safety of HIL testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the use state of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be further described below in conjunction with the drawings.

[0016] See Figure 1, the utility model is a tooling for the concentric shaft fixture of the HIL bench, including a bottom plate, a fixed seat, guide rails, an upper slider, a lower slider, a lower support plate, a reinforcing plate, a rubber head, a connecting block, and a micrometer. A fixed seat 12 is installed on the top of the bottom plate 11. Inner surfaces of vertical plates on both sides of the fixed seat 12 are respectively installed with a guide rail 13. Upper ends of the two guide rails 13 are respectively installed with an upper slider 141. A reinforcing plate 15 is installed between the two upper sliders 141. A rubber head 16 is installed at the center of the bottom of the reinforcing plate 15. On the outer side of a vertical plate on one side of the fixed seat 12, a micrometer one 171 is installed. The measuring end of the micrometer one 171 is connected to one end of a connecting block one 181. The other end of the connecting block one 181 is connected to the upper slider 141. The connecting block one 181 is slidably connected to the vertical plate on one side of the fixed seat 12. Lower ends of the two guide rails 13 are respectively installed with a lower slider 142. A lower support plate 110 is installed between the two lower sliders 142. On the outer side of a vertical plate on the other side of the fixed seat 12, a micrometer two 172 is installed. The measuring end of the micrometer two 172 is connected to one end of a connecting block two 182. The other end of the connecting block two 182 is connected to the lower slider 142. The connecting block two 182 is slidably connected to the vertical plate on the other side of the fixed seat 12.

[0017] The fixed seat 12 is in a mouth shape to increase the overall rigidity of the tooling.

[0018] On the outer side of a vertical plate on one side of the fixed seat 12, an installation block one 183 is also fixed. A spring screw one 191 is installed between the installation block one 183 and the connecting block one 181. Springs at both ends of the spring screw one 191 respectively abut against the lower surface of the installation block one 183 and the upper surface of the connecting block one 181. The setting of the spring screw one 191 is to ensure the balanced fixing moment of the micrometer one 171 for the upper slider 141. Cooperating with the spring screw two 192, it reduces the error of the overall tooling.

[0019] On the outer side of a vertical plate on the other side of the fixed seat 12, an installation block two 184 is also fixed. A spring screw two 192 is installed between the installation block two 184 and the connecting block two 182. Springs at both ends of the spring screw two 192 respectively abut against the upper surface of the installation block two 184 and the lower surface of the connecting block two 182. The setting of the spring screw two 192 is to ensure the balanced fixing moment of the micrometer two 172 for the lower slider 142. Cooperating with the spring screw one 191, it reduces the error of the overall tooling.

[0020] The adjustment precision unit of the micrometer one 171 and the micrometer two 172 is mm. The micrometer one 171 and the micrometer two 172 with scales can precisely control the position of the coupling and ensure the consistency of the axis center.

[0021] The space between the lower support plate 110 and the reinforcement plate 15 can be accurately adjusted by the micrometer one 171 and the micrometer two 172 to meet the requirements of different shaft center heights. Currently, the maximum difference in the shaft center height of the steering gear power units of different specifications to be tested is 5 mm, and the designed fixture capacity is 20 mm, which can fully meet the installation requirements of steering gear power units of different specifications.

[0022] See Figure 2 , on the HIL test bench 2, a steering gear power unit 4 and a load motor 5 are installed. A torque sensor 3 is provided between the steering gear power unit 4 and the load motor 5, and a coupling 6 is respectively used to connect between the torque sensor 3 and the steering gear power unit 4 and between the torque sensor 3 and the load motor 5. When the utility model works, the tooling 1 is installed at the position of the torque sensor 3, and the bottom plate 11 and the HIL test bench 2 are fixed by fasteners. The upper slider 141 and the lower slider 142 can be adjusted up and down along the guide rail 13 to adapt to the shaft center height of the coupling 6. The lower support plate 110 supports the bottom of the torque sensor 3, and the rubber head 16 abuts against the upper end of the torque sensor 3, clamping the torque sensor 3 between the lower support plate 110 and the reinforcement plate 15, which can prevent the torque sensor 3 from shaking, and the rubber head 16 plays a role in protecting the torque sensor 3.

[0023] During the HIL test, even if the coupling 6 at any end of the steering gear power unit 4 or the load motor 5 is disconnected, since the torque sensor 3 is clamped between the lower support plate 110 and the reinforcement plate 15, it will not have an oval rotation, avoiding the situation of damaging the equipment and injuring personnel.

[0024] The utility model uses a micrometer to cooperate with a slider to adjust the shaft center of the torque sensor. During the HIL test, it ensures that the shaft centers of the steering gear power unit, the coupling, the torque sensor, and the load motor are consistent; after any end of the steering gear power unit or the load motor is disconnected, there will be no oval rotation to damage the equipment and injure personnel, improving the safety of the HIL test.

Claims

1. A tooling for a concentric shaft fixture of a HIL test bench, comprising a bottom plate, a fixed seat, a guide rail, an upper slider, a lower slider, a lower support plate, a reinforcing plate, a rubber head, a connecting block, and a micrometer, characterized in that: A fixing base (12) is installed on the top of the bottom plate (11). On the inner surfaces of the vertical plates on both sides of the fixing base (12), a guide rail (13) is respectively installed. At the upper ends of the two guide rails (13), an upper slider (141) is respectively installed. Between the two upper sliders (141), a reinforcing plate (15) is installed. At the center of the bottom of the reinforcing plate (15), a rubber head (16) is installed. On the outer side of the vertical plate on one side of the fixing base (12), a micrometer one (171) is installed. The measuring end of the micrometer one (171) is connected to one end of a connecting block one (181). The other end of the connecting block one (181) is connected to the upper slider (141). The connecting block one (181) is slidably connected to the vertical plate on one side of the fixing base (12). At the lower ends of the two guide rails (13), a lower slider (142) is respectively installed. Between the two lower sliders (142), a lower support plate (110) is installed. On the outer side of the vertical plate on the other side of the fixing base (12), a micrometer two (172) is installed. The measuring end of the micrometer two (172) is connected to one end of a connecting block two (182). The other end of the connecting block two (182) is connected to the lower slider (142). The connecting block two (182) is slidably connected to the vertical plate on the other side of the fixing base (12).

2. The tooling for a concentric shaft fixture of a HIL test bench according to claim 1, characterized in that: The fixing base (12) is in a shape of a square frame with an opening in the middle.

3. The tooling for a concentric shaft fixture of a HIL bench according to claim 1, characterized in that: The bottom plate (11) and the HIL bench (2) are fixed by fasteners. The lower support plate (110) supports the bottom of the torque sensor (3), and the rubber head (16) abuts against the upper end of the torque sensor (3).

4. A tooling for the concentric shaft fixture of the HIL test bench according to claim 1, characterized in that: On the outer side of the vertical plate on one side of the fixing base (12), a mounting block one (183) is further fixed. Between the mounting block one (183) and the connecting block one (181), a spring screw one (191) is installed. The two ends of the spring of the spring screw one (191) respectively abut against the lower surface of the mounting block one (183) and the upper surface of the connecting block one (181).

5. The tooling for a concentric shaft fixture of a HIL test bench according to claim 1, characterized in that: On the outer side of the vertical plate on the other side of the fixing base (12), a mounting block two (184) is further fixed. Between the mounting block two (184) and the connecting block two (182), a spring screw two (192) is installed. The two ends of the spring of the spring screw two (192) respectively abut against the upper surface of the mounting block two (184) and the lower surface of the connecting block two (182).

6. The tooling for the concentric shaft fixture of the HIL bench according to claim 1, characterized in that: The adjustment precision unit of the micrometer one (171) and the micrometer two (172) is mm.

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