Device for measuring horizontal movement stroke of inner pull rod of rear wheel power-assisted steering motor

Abstract

The utility model relates to the technical field of rear wheel power-assisted steering motor measurement, in particular to a rear wheel power-assisted steering motor inner pull rod horizontal movement stroke measuring device which comprises a fixed seat, a sliding seat capable of transversely moving is arranged in the middle of the top end of the fixed seat, and a vertical plate is fixedly installed on the left side of the top end of the sliding seat. A first strip-shaped channel allowing an inner pull rod to penetrate through is formed in the middle of the rear side of the vertical plate, a pneumatic clamping mechanism used for limiting and positioning the inner pull rod is arranged on the left side of the vertical plate, a righting mechanism used for righting the inner pull rod is arranged at the position, located on the right side of the vertical plate, of the top end of the sliding base, and a grating reading head is fixedly installed at the rear end of the sliding base. The rear side of the top end of the fixed seat is provided with a scale grating corresponding to the grating reading head, and the rear side of the top end of the fixed seat is also provided with an initial position remodeling mechanism.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology for rear wheel power steering motors, and in particular to a device for measuring the horizontal movement stroke of the inner tie rod of a rear wheel power steering motor. Background Technology

[0002] With the continuous development of automotive technology, rear-wheel power steering systems have gradually come into the public eye. This is an advanced technology that improves vehicle handling, stability, and agility by controlling the steering angle of the rear wheels. Compared to traditional vehicles that rely solely on front-wheel steering, rear-wheel power steering systems can actively adjust the rear wheel angle in different driving scenarios, optimizing vehicle dynamics.

[0003] The rear-wheel power steering motor is an important component of the rear-wheel power steering system. The inner tie rod is the structural component in the rear-wheel power steering motor that directly drives the rear wheels to rotate. The horizontal travel of the inner tie rod determines the rotation angle of the rear wheels that the rear-wheel power steering motor can drive. Therefore, it is necessary to accurately measure the horizontal travel of the inner tie rod.

[0004] However, current devices for measuring the horizontal travel of the inner tie rod of the rear wheel power steering motor are often not accurate enough in positioning, have low measurement precision, and are not applicable to the measurement of various power steering motors. Utility Model Content

[0005] The purpose of this invention is to provide a device for measuring the horizontal travel of the inner tie rod of a rear wheel power steering motor, so as to solve the technical problems existing in the background art.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A device for measuring the horizontal travel of the inner tie rod of a rear-wheel power steering motor includes: a rear-wheel power steering motor, the rear-wheel power steering motor including: an inner tie rod and two ball joints, the two ball joints being respectively located at both ends of the rear-wheel power steering motor body, the two inner tie rods being respectively hinged in the two ball joints; and a fixed base, the fixed base having a slide block capable of lateral movement at the top center of the top of the fixed base, a vertical plate fixedly installed on the left side of the top of the slide block, a strip-shaped channel for the inner tie rod to pass through the middle of the rear side of the vertical plate, a pneumatic clamping mechanism for limiting and positioning the inner tie rod on the left side of the vertical plate, a straightening mechanism for straightening the inner tie rod at the top of the slide block located on the right side of the vertical plate, a grating reading head fixedly installed at the rear end of the slide block, a scale grating corresponding to the grating reading head being provided on the rear side of the top of the fixed base, and an initial position conversion mechanism being provided on the rear side of the top of the fixed base.

[0008] Furthermore, it also includes: a guide rail, a slider, a slide block, a concave block, a convex block, a horizontal slider, and a horizontal rodless cylinder. There are two guide rails and four sliders. The tops of the four sliders are fixedly connected to the four corners of the bottom of the slide block. The four sliders are connected to the two guide rails in pairs. A concave block is fixedly installed on the left side of the front top of the slide block. A convex block is engaged with the concave block. A horizontal slider is fixedly installed on the top of the convex block. The horizontal slider is fixedly installed at the output end of the horizontal rodless cylinder. The horizontal rodless cylinder is fixedly installed at the front top of the fixed base.

[0009] Furthermore, it also includes: a cable chain frame, a cable chain, and a cable chain connecting plate. The cable chain frame is fixedly connected to the front end of the fixed base. One end of the cable chain is connected to the cable chain frame. The other end of the cable chain is connected to the cable chain connecting plate. The cable chain connecting plate is fixedly installed on the top of the convex block.

[0010] Furthermore, it also includes: a reinforcing support, which is fixedly installed at the connection between the upright plate and the slide.

[0011] Furthermore, the pneumatic clamping mechanism includes: a mounting plate, a cylinder support one, a telescopic cylinder, an L-shaped connecting block, a clamp, a slider two, and a guide rail two. The mounting plate is detachably fixedly installed on the left end of the upright plate. The rear end of the mounting plate has a strip channel two corresponding to the strip channel one. The mounting plate, cylinder support one, telescopic cylinder, L-shaped connecting block, clamp, and slider two are symmetrically arranged in two positions. The two telescopic cylinders are symmetrically fixedly installed on the upper and lower sides of the front left end of the mounting plate through the two cylinder supports one. The guide rail two is vertically fixedly installed on the rear left end of the mounting plate. The two sliders two are vertically slidably connected to the guide rail two. The left ends of the two sliders two are symmetrically fixedly installed with two clamps. When the two clamps are closed, the inner cavity they form matches the size of the inner pull rod. The front ends of the two clamps are symmetrically fixedly installed with two L-shaped connecting blocks. The two L-shaped connecting blocks are fixedly connected to the telescopic ends of the two telescopic cylinders.

[0012] Furthermore, the straightening mechanism includes: a cylinder support two, a rotary cylinder and a positioning claw. The rotary cylinder is fixedly installed on the top of the slide at the position on the right side of the upright plate via the cylinder support two, and the positioning claw is fixedly installed on the output end of the rotary cylinder.

[0013] Furthermore, it also includes: an adjusting support, an adjusting knob, and a fixing block. The adjusting support is fixedly installed at the right end of the upright plate at the front end of the strip channel. The fixing block is detachably fixed at the right end of the upright plate at the rear end of the adjusting support. The adjusting knob passes through and is threadedly connected to the adjusting support. The rear end of the adjusting knob is rotatably connected to the front end of the fixing block. The rear end of the fixing block has a V-shaped groove that cooperates with the inner pull rod.

[0014] Furthermore, it also includes a mounting base, through which the grating reading head is fixedly mounted on the rear end of the slide.

[0015] Furthermore, the initial position changing mechanism includes: a T-shaped fixing plate, a contact rod, a changing block, and a mounting head. The contact rod is fixedly installed at the rear end of the slide by the T-shaped fixing plate. The contact rod is arranged horizontally. The changing block is detachably fixedly installed on the mounting head. The mounting head is fixedly installed on the right side of the top of the fixing seat. When the changing block contacts the contact rod, the grating reading head reads the scale on the scale grating as 0.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. After the rear wheel power steering motor is in position, the positioning claw driven by the rotary cylinder can adjust the different postures of the inner tie rod on the production line and hold it in place by the fixture to position one side end face; this can meet the calibration of displacement sensors for different models of rear wheel power steering motors.

[0018] 2. The horizontal rodless cylinder applies force only to position the end face of the inner tie rod. The main stroke force of the pushing mechanism is provided by the rear wheel power steering motor itself, making the horizontal positioning more accurate.

[0019] 3. The horizontal displacement of the inner tie rod can be directly recorded on the grating ruler, reducing the influence of other factors and making the measurement more accurate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a rear-view perspective view of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of this utility model during measurement.

[0023] The labels in the attached diagram are as follows: 1-Fixed base, 2-Guide rail one, 3-Slider one, 4-Slide seat, 5-Concave block, 6-Convex block, 7-Horizontal slider, 8-Horizontal rodless cylinder, 9-Drag chain frame, 10-Drag chain, 11-Drag chain connecting plate, 12-Upright plate, 13-Reinforcing support, 14-Mounting plate, 15-Cylinder support one, 16-Telescopic cylinder, 17-L-shaped connecting block, 18-Clamp, 19-Slider two, 20-Guide rail two, 21-Adjusting support, 22-Adjusting knob, 23-Fixed block, 24-Cylinder support two, 25-Rotating cylinder, 26-Positioning claw, 27-Mounting base, 28-Grate reading head, 29-Scale grating, 30-T-shaped fixed plate, 31-Contact rod, 32-Change stop block, 33-Mounting head, 34-Inner pull rod, 35-Ball head. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] See Figures 1-3 As shown, a device for measuring the horizontal travel of the inner tie rod of a rear-wheel power steering motor includes: a rear-wheel power steering motor, which includes: an inner tie rod 34 and two ball joints 35. Two ball joints 35 are provided for each inner tie rod 34, and two ball joints 35 are respectively located at both ends of the rear-wheel power steering motor body. The two inner tie rods 34 are respectively hinged within the two ball joints 35. The device also includes: a fixed base 1, with a laterally movable slide 4 located at the center of the top of the fixed base 1. The left side of the top of the slide 4 is fixed... A vertical plate 12 is fixedly installed. A strip-shaped channel for the inner tie rod to pass through is opened in the middle of the rear side of the vertical plate 12. A pneumatic clamping mechanism for limiting and positioning the inner tie rod 34 is provided on the left side of the vertical plate 12. A straightening mechanism for straightening the inner tie rod is provided at the top of the slide block 4 located on the right side of the vertical plate 12. A grating reading head 28 is fixedly installed at the rear end of the slide block 4. A scale grating 29 corresponding to the grating reading head 28 is provided on the rear side of the top of the fixed base 1. An initial position changing mechanism is also provided on the rear side of the top of the fixed base 1.

[0026] In this embodiment, the system also includes: a guide rail 2, a slider 3, a slide block 4, a concave block 5, a convex block 6, a horizontal slider 7, and a horizontal rodless cylinder 8. There are two guide rails 2 and four sliders 3. The tops of the four sliders 3 are fixedly connected to the four corners of the bottom of the slide block 4. The four sliders 3 are connected to the two guide rails 2 in pairs. A concave block 5 is fixedly installed on the left side of the front top of the slide block 4. A convex block 6 is snapped onto the concave block 5. A horizontal slider 7 is fixedly installed on the top of the convex block 6. The horizontal slider 7 is fixedly installed at the output end of the horizontal rodless cylinder 8. The horizontal rodless cylinder 8 is fixedly installed at the front top of the fixed base 1.

[0027] In this embodiment, it also includes: a cable chain frame 9, a cable chain 10, and a cable chain connecting plate 11. The cable chain frame 9 is fixedly connected to the front end of the fixing base 1. One end of the cable chain 10 is connected to the cable chain frame 9, and the other end of the cable chain 10 is connected to the cable chain connecting plate 11. The cable chain connecting plate 11 is fixedly installed on the top of the convex block 6.

[0028] In this embodiment, a reinforcing support 13 is also included. The reinforcing support 13 is fixedly installed at the connection between the upright plate 12 and the slide block 4. The reinforcing support 13 can improve the connection stability between the upright plate 12 and the slide block 4.

[0029] In this embodiment, the pneumatic clamping mechanism includes: a mounting plate 14, a cylinder support 15, a telescopic cylinder 16, an L-shaped connecting block 17, a clamp 18, a slider 19, and a guide rail 20. The mounting plate 14 is detachably fixedly installed on the left end of the upright plate 12. A second strip channel is opened at the rear end of the mounting plate 14 corresponding to the first strip channel. Two mounting plates 14, cylinder supports 15, telescopic cylinders 16, L-shaped connecting blocks 17, clamps 18, and sliders 19 are symmetrically arranged vertically. The two telescopic cylinders 16 are respectively connected by two cylinders. Support 15 is symmetrically fixedly installed on the upper and lower sides of the front left end of mounting plate 14. Guide rail 20 is vertically fixedly installed on the rear left end of mounting plate 14. Two sliders 29 are vertically slidably connected to guide rail 20. Two clamps 18 are symmetrically fixedly installed on the left end of the two sliders 29. When the two clamps 18 are closed, the inner cavity formed by them matches the size of the inner pull rod. Two L-shaped connecting blocks 17 are symmetrically fixedly installed at the front end of the two clamps 18. The two L-shaped connecting blocks 17 are respectively fixedly connected to the telescopic ends of the two telescopic cylinders 16.

[0030] In this embodiment, the straightening mechanism includes: cylinder support 24, rotary cylinder 25 and positioning claw 26. The rotary cylinder 25 is fixedly installed on the top of the slide block 4 at the position on the right side of the upright plate 12 via cylinder support 24. The positioning claw 26 is fixedly installed on the output end of the rotary cylinder 25. The rotary cylinder 25 drives the positioning claw 26 to rotate, thereby actuating the inner pull rod 34 and straightening the inner pull rod 34.

[0031] In this embodiment, the system also includes: an adjusting support 21, an adjusting knob 22, and a fixing block 23. The adjusting support 21 is fixedly installed at the right end of the upright plate 12 at the front end of the strip channel. The fixing block 23 is detachably fixedly installed at the right end of the upright plate 12 at the rear end of the adjusting support 21. The adjusting knob 22 passes through and is threadedly connected to the adjusting support 21. The rear end of the adjusting knob 22 is rotatably connected to the front end of the fixing block 23. The rear end of the fixing block 23 has a V-shaped groove that cooperates with the inner pull rod 34. The V-shaped groove on the fixing block 23 cooperates with the positioning claw 26 to ensure that the inner pull rod 34 can be straightened.

[0032] In this embodiment, it also includes: a mounting base 27, through which the grating reading head 28 is fixedly mounted on the rear end of the slide block 4.

[0033] In this embodiment, the initial position changing mechanism includes: a T-shaped fixing plate 30, a contact rod 31, a changing block 32, and a mounting head 33. The contact rod 31 is fixedly installed at the rear end of the slide block 4 through the T-shaped fixing plate 30. The contact rod 31 is arranged horizontally. The changing block 32 is detachably fixedly installed on the mounting head 33. The mounting head 33 is fixedly installed on the right side of the top of the fixing base 1. When the changing block 32 contacts the contact rod 31, the grating reading head 28 reads the scale on the scale grating 29 as 0.

[0034] Working principle: When the rear wheel power steering motor is in position, the rotary cylinder 25 drives the positioning claw 26 to straighten and position the inner tie rod 34 on one side of the rear wheel power steering motor. Then, the telescopic cylinder 16 extends and the clamp 18 closes to restrict and position the inner tie rod 34. The rotary cylinder 25 returns to the initial position. At this time, the horizontal rodless cylinder 8 applies a 2N thrust to move forward. After hitting the end face of the ball head 35, the rear wheel power steering motor is powered on and drives the inner tie rod 34 to move left and right (the force of the rear wheel power steering motor will always exceed that of the horizontal rodless cylinder 8. Here, the horizontal rodless cylinder 8 only performs follow-up positioning). The grating ruler composed of the grating reading head 28 and the scale grating 29 records the horizontal travel of the inner tie rod 34 when the rear wheel power steering motor rotates and feeds it back to the PC for comparison with the sensor inside the rear wheel power steering motor.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made by any person skilled in the art to the above embodiments without departing from the scope of the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for measuring the horizontal travel of the inner tie rod of a rear wheel power steering motor, comprising: The rear wheel power steering motor includes: an inner tie rod (34) and a ball joint (35), each having two inner tie rods (34) and two ball joints (35), with the two ball joints (35) respectively located at both ends of the rear wheel power steering motor body, and the two inner tie rods (34) respectively hinged within the two ball joints (35). The motor is characterized by further including: a fixed base (1), with a slide (4) capable of lateral movement located at the center of the top of the fixed base (1), and a vertical plate (12) fixedly installed on the left side of the top of the slide (4). (12) A strip-shaped channel is provided in the middle of the rear side for the inner tie rod to pass through. A pneumatic clamping mechanism for limiting and positioning the inner tie rod (34) is provided on the left side of the upright plate (12). A straightening mechanism for straightening the inner tie rod is provided at the top of the slide (4) located on the right side of the upright plate (12). A grating reading head (28) is fixedly installed at the rear end of the slide (4). A scale grating (29) corresponding to the grating reading head (28) is provided on the rear side of the top of the fixed seat (1). An initial position changing mechanism is also provided on the rear side of the top of the fixed seat (1).

2. The rear wheel assist steering motor inner pull rod horizontal movement stroke measuring device according to claim 1, characterized in that: Also includes: The system includes a guide rail (2), a slider (3), a slide block (4), a concave block (5), a convex block (6), a horizontal slider (7), and a horizontal rodless cylinder (8). There are two guide rails (2) and four sliders (3). The tops of the four sliders (3) are fixedly connected to the four corners of the bottom of the slide block (4). The four sliders (3) are connected horizontally to the two guide rails (2) in pairs. A concave block (5) is fixedly installed on the left side of the front top of the slide block (4). A convex block (6) is snapped onto the concave block (5). A horizontal slider (7) is fixedly installed on the top of the convex block (6). The horizontal slider (7) is fixedly installed at the output end of the horizontal rodless cylinder (8). The horizontal rodless cylinder (8) is fixedly installed at the front top of the fixed base (1).

3. The rear wheel assist steering motor inner pull rod horizontal movement stroke measuring device according to claim 2, characterized in that: Also includes: The cable chain frame (9), cable chain (10) and cable chain connecting plate (11) are fixedly connected to the front end of the fixed base (1). One end of the cable chain (10) is connected to the cable chain frame (9). The other end of the cable chain (10) is connected to the cable chain connecting plate (11). The cable chain connecting plate (11) is fixedly installed on the top of the convex block (6).

4. The rear wheel assist steering motor inner pull rod horizontal movement stroke measuring device according to claim 1, characterized in that: Also includes: A reinforcing support (13) is fixedly installed at the connection between the upright plate (12) and the slide (4).

5. The rear wheel assist steering motor inner pull rod horizontal movement stroke measuring device according to claim 1, characterized in that: The pneumatic clamping mechanism includes: a mounting plate (14), a cylinder support (15), a telescopic cylinder (16), an L-shaped connecting block (17), a clamp (18), a slider (19), and a guide rail (20). The mounting plate (14) is detachably fixedly installed on the left end of the upright plate (12). The rear end of the mounting plate (14) is provided with a strip channel (2) corresponding to the strip channel (1). The mounting plate (14), the cylinder support (15), the telescopic cylinder (16), the L-shaped connecting block (17), the clamp (18), and the slider (19) are all symmetrically arranged in two units. The two telescopic cylinders (16) are respectively connected by... Two cylinder supports (15) are symmetrically fixedly installed on the upper and lower sides of the front left end of the mounting plate (14). The guide rail (20) is vertically fixedly installed on the rear left end of the mounting plate (14). Two sliders (19) are vertically slidably connected to the guide rail (20). Two clamps (18) are symmetrically fixedly installed on the left end of the two sliders (19). When the two clamps (18) are closed, the inner cavity formed by them matches the size of the inner pull rod. Two L-shaped connecting blocks (17) are symmetrically fixedly installed at the front end of the two clamps (18). The two L-shaped connecting blocks (17) are fixedly connected to the telescopic ends of the two telescopic cylinders (16).

6. The rear wheel assist steering motor inner tie rod horizontal movement stroke measuring device of claim 1, wherein: The straightening mechanism includes: cylinder support two (24), rotary cylinder (25) and positioning claw (26). The rotary cylinder (25) is fixedly installed on the top of the slide (4) at the position on the right side of the upright plate (12) via cylinder support two (24). The positioning claw (26) is fixedly installed on the output end of the rotary cylinder (25).

7. The rear wheel assist steering motor inner tie rod horizontal movement stroke measuring device according to claim 6, characterized in that: Also includes: Adjustable support (21), adjusting knob (22) and fixing block (23). The adjusting support (21) is fixedly installed at the front end of the right end of the vertical plate (12) at the front end of the strip channel. The fixing block (23) is detachably fixedly installed at the rear end of the adjusting support (21) at the right end of the vertical plate (12). The adjusting knob (22) passes through and is threaded to the adjusting support (21). The rear end of the adjusting knob (22) is rotatably connected to the front end of the fixing block (23). The rear end of the fixing block (23) has a V-shaped groove that cooperates with the inner pull rod (34).

8. The rear wheel assist steering motor inner tie rod horizontal movement stroke measuring device of claim 1, wherein: Also includes: Mounting base (27), the grating reading head (28) is fixedly mounted on the rear end of the slide (4) via the mounting base (27).

9. The device for measuring the horizontal travel of the inner tie rod of a rear wheel power steering motor according to claim 1, characterized in that: The initial position changing mechanism includes: a T-shaped fixing plate (30), a contact rod (31), a changing block (32), and a mounting head (33). The contact rod (31) is fixedly installed on the rear end of the slide (4) through the T-shaped fixing plate (30). The contact rod (31) is arranged horizontally. The changing block (32) is detachably fixedly installed on the mounting head (33). The mounting head (33) is fixedly installed on the right side of the top of the fixing seat (1). When the changing block (32) contacts the contact rod (31), the grating reading head (28) reads the scale on the scale grating (29) as 0.

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