A rack and pinion steering gear assembly stiffness testing device

Abstract

The utility model relates to the technical fields of rigidity detection device especially is related to a gear and rack type steering gear assembly rigidity detection device, its through spacing device to the rack in gear and rack type steering gear assembly is limited, through adjusting device, elevating gear and detection device convenient to gear and rack type steering gear assembly rigidity detection, through monitoring device to rigidity detection process is monitored, including operation platform, still including spacing device, adjusting device, elevating gear, detection device and monitoring device, spacing device and adjusting device all install on operation platform, elevating gear and monitoring device all install on adjusting device, detection device installs on elevating gear, spacing device convenient installation, adjusting device carries out position adjustment, elevating gear carries out the rise and fall, detection device carries out the rotation detection, monitoring device carries out the monitoring.

Description

Technical Field

[0001] This utility model relates to the technical field of stiffness testing devices, and in particular to a stiffness testing device for a rack and pinion steering assembly. Background Technology

[0002] Precise measurement of the rack and pinion steering assembly's ability to resist deformation when subjected to simulated steering wheel input torque or steering tie rod output force, i.e., stiffness, is crucial for evaluating the performance of the steering system (such as steering feel, NVH, accuracy, and reliability). Therefore, a rack and pinion steering assembly stiffness testing device has been developed.

[0003] For example, in a class of prior art represented by application number CN202023244049.1, the main structure includes a fixed base plate, a bushing housing, a rack, a force application frame, a support, a displacement sensor, and a force sensor. The vertical end of the bushing housing is mounted on the central axis of the fixed base plate. A bushing subassembly is installed inside the bushing housing. The middle part of the rack passes through the horizontal end of the bushing housing, and both ends of the rack are connected to the bottom of the force application frame. A force sensor is fixed on the force application frame, and both sides of the rack are connected to the support, on which a displacement sensor is fixed. Compared with the prior art, this utility model designs a radial stiffness testing device for a steering gear bushing subassembly. By rotating the bushing, radial stiffness measurement in any direction can be achieved. This utility model has the advantages of simple structure, low manufacturing cost, and easy disassembly and assembly, and can realize radial stiffness testing of the steering gear bushing subassembly in any direction.

[0004] During use, it was found that existing stiffness testing devices are inconvenient for quickly installing the rack in the rack and pinion steering assembly, resulting in wasted time. Therefore, there is an urgent need for a stiffness testing device for the rack and pinion steering assembly. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a rack and pinion steering assembly stiffness testing device that limits the rack in the rack and pinion steering assembly through a limiting device, facilitates stiffness testing of the rack and pinion steering assembly through an adjustment device, a lifting device and a testing device, and monitors the stiffness testing process through a monitoring device.

[0006] This utility model discloses a stiffness testing device for a rack and pinion steering assembly, including an operating platform; it also includes a limiting device, an adjusting device, a lifting device, a testing device, and a monitoring device. The limiting device and the adjusting device are both mounted on the operating platform, the lifting device and the monitoring device are both mounted on the adjusting device, and the testing device is mounted on the lifting device. The limiting device facilitates installation, the adjusting device adjusts the position, the lifting device raises and lowers, the testing device detects rotation, and the monitoring device monitors the rotation. The limiting device limits the rack in the rack and pinion steering assembly, the adjusting device, the lifting device, and the testing device facilitate stiffness testing of the rack and pinion steering assembly, and the monitoring device monitors the stiffness testing process.

[0007] Preferably, the operating table includes a base, which is installed in the work area and has a sliding groove; the base provides support.

[0008] Preferably, the limiting device includes a motor, a bidirectional motor, a first limiting block, a second limiting block, a first oil sleeve, and a second oil sleeve. The motor is mounted on the side of the base, and the output end of the motor is rotatably connected to the input end of the bidirectional motor. The first limiting block and the second limiting block are both threadedly mounted on the bidirectional motor and slidably mounted on the slide groove. The first oil sleeve is mounted on the first limiting block, and the second oil sleeve is mounted on the second limiting block. The rack is placed between the first and the second limiting blocks. By starting the motor, the bidirectional motor is driven to rotate, which enables the first and the second limiting blocks to move in opposite directions on the slide groove. The rack passes through the first and the second oil sleeves to install the rack.

[0009] Preferably, the adjustment device includes two sets of linear motors and a movable support. The two sets of linear motors are symmetrically installed on the top of the base. Each set of linear motors is provided with a set of sliders. The movable support is installed on the top of the sliders and is provided with two sets of reinforcing ribs. When the linear motors are started, the sliders and the movable support are moved, and the reinforcing ribs provide support.

[0010] Preferably, the lifting device includes an electric telescopic rod, a lifting frame, a guide shaft, and a guide sleeve. The electric telescopic rod is installed at the top of the movable support and has an output shaft. The lifting frame is installed at the bottom of the output shaft of the electric telescopic rod, the guide shaft is installed at the top of the lifting frame, and the guide sleeve is installed on the movable support and fitted onto the guide shaft. When the electric telescopic rod is activated, the output shaft of the electric telescopic rod extends, causing the lifting frame to descend directionally via the guide shaft and onto the guide sleeve.

[0011] Preferably, the detection device includes an adjustable motor and a motor shaft. The adjustable motor is mounted on the lifting frame, and the output end of the adjustable motor is rotatably connected to the input end of the motor shaft. A fixing key is provided on the motor shaft. The motor shaft and the fixing key are inserted into the gear hole. By starting the adjustable motor, the motor shaft and the fixing key are rotated, which in turn drives the gear to rotate. Through the meshing of the gear and rack, the rack is driven to reciprocate on the first oil sleeve and the second oil sleeve, thereby realizing the detection of the stiffness of the gear and rack steering gear assembly.

[0012] Preferably, the monitoring device includes two sets of cameras, which are respectively mounted on two sets of reinforcing ribs; the cameras are used to monitor the stiffness testing process of the rack and pinion steering assembly.

[0013] Compared with the prior art, the advantages of this utility model are as follows: the rack in the rack and pinion steering assembly is limited by the limiting device; the stiffness of the rack and pinion steering assembly is conveniently tested by the adjusting device, the lifting device and the testing device; and the stiffness testing process is monitored by the monitoring device. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the structure of this utility model;

[0015] Figure 2 yes Figure 1 Structural isometric view of the operating table and limiting device in this utility model;

[0016] Figure 3 yes Figure 1 Structural isometric drawing of the operating console and adjustment device in this utility model;

[0017] Figure 4 yes Figure 1 Enlarged structural isometric view of the adjustment device and lifting device in this utility model;

[0018] Figure 5 yes Figure 1 Enlarged isometric view of the lifting device and detection device structure in this utility model.

[0019] The attached diagram is labeled as follows: 01, operating table; 11, base; 12, slide rail; 02, limiting device; 21, motor; 22, double-acting lead screw; 23, limiting block one; 24, limiting block two; 25, oil sleeve one; 26, oil sleeve two; 03, adjusting device; 31, linear motor; 32, slider; 33, moving bracket; 34, reinforcing rib; 04, lifting device; 41, electric telescopic rod; 42, lifting frame; 43, guide shaft; 44, guide sleeve; 05, detection device; 51, adjustable motor; 52, motor shaft; 53, fixing key; 06, monitoring device; 61, camera. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] A rack and pinion steering assembly stiffness testing device includes an operating platform 01; characterized in that it further includes a limiting device 02, an adjusting device 03, a lifting device 04, a testing device 05, and a monitoring device 06, wherein the limiting device 02 and the adjusting device 03 are both installed on the operating platform 01, the lifting device 04 and the monitoring device 06 are both installed on the adjusting device 03, and the testing device 05 is installed on the lifting device 04;

[0023] The limit device 02 is easy to install, the adjustment device 03 is used for position adjustment, the lifting device 04 is used for lifting, the detection device 05 is used for rotation detection, and the monitoring device 06 is used for monitoring.

[0024] The operating table 01 includes a base 11, which is installed in the work area and has a sliding groove 12.

[0025] The limiting device 02 includes a motor 21, a bidirectional motor 22, a first limiting block 23, a second limiting block 24, a first oil sleeve 25, and a second oil sleeve 26. The motor 21 is installed on the side of the base 11, and the output end of the motor 21 is rotatably connected to the input end of the bidirectional motor 22. The first limiting block 23 and the second limiting block 24 are both installed on the bidirectional motor 22 by threaded connection. The first limiting block 23 and the second limiting block 24 are both slidably installed on the slide groove 12. The first oil sleeve 25 is installed on the first limiting block 23, and the second oil sleeve 26 is installed on the second limiting block 24.

[0026] The adjustment device 03 includes two sets of linear motors 31 and a moving bracket 33. The two sets of linear motors 31 are symmetrically installed on the top of the base 11. Each set of linear motors 31 is provided with a set of sliders 32. The moving bracket 33 is installed on the top of the sliders 32. The moving bracket 33 is provided with two sets of reinforcing ribs 34.

[0027] The lifting device 04 includes an electric telescopic rod 41, a lifting frame 42, a guide shaft 43, and a guide sleeve 44. The electric telescopic rod 41 is installed on the top of the movable support 33 and has an output shaft. The lifting frame 42 is installed at the bottom of the output shaft of the electric telescopic rod 41. The guide shaft 43 is installed on the top of the lifting frame 42. The guide sleeve 44 is installed on the movable support 33 and is fitted onto the guide shaft 43.

[0028] The detection device 05 includes an adjustable motor 51 and a motor shaft 52. The adjustable motor 51 is mounted on the lifting frame 42. The output end of the adjustable motor 51 is rotatably connected to the input end of the motor shaft 52. A fixing key 53 is provided on the motor shaft 52.

[0029] The limit device 02 is easy to install, the adjustment device 03 is used for position adjustment, the lifting device 04 is used for lifting, and the detection device 05 is used for rotation detection.

[0030] The rack is placed between limit block 1 23 and limit block 24. Starting motor 21 drives bidirectional motor 22 to rotate, causing limit blocks 1 23 and 24 to move in opposite directions on slide groove 12. The rack is then passed through oil sleeve 1 25 and oil sleeve 26 to install it. Next, starting linear motor 31 moves slider 32 and moving bracket 33, aligning motor shaft 52 and fixing key 53 with gear holes. Starting electric telescopic rod 41 then moves the electric telescopic rod 4... The output shaft of unit 1 extends, causing the lifting frame 42 to descend directionally on the guide sleeve 44 via the guide shaft 43, so that the motor shaft 52 and the fixing key 53 are inserted into the gear hole. By starting the adjustable motor 51, the motor shaft 52 and the fixing key 53 are rotated, which in turn drives the gear to rotate. Through the meshing of the gear and rack, the rack is driven to reciprocate on the oil sleeve 25 and the oil sleeve 26, so as to detect the stiffness of the gear and rack steering assembly. During this process, the operator observes the detection process.

[0031] Example 2

[0032] like Figures 1 to 5 As shown, in addition to Embodiment 1, a monitoring device 06 is also included;

[0033] The monitoring device 06 includes two sets of cameras 61, which are respectively mounted on two sets of reinforcing ribs 34.

[0034] Monitoring device 06 performs monitoring;

[0035] During the testing process, camera 61 monitors the stiffness testing process of the rack and pinion steering assembly.

[0036] This utility model discloses a gear and rack steering assembly stiffness testing device. During operation, the rack is first placed between limit block 1 23 and limit block 24. The motor 21 is started, driving the bidirectional motor 22 to rotate, causing limit blocks 1 23 and 24 to move in opposite directions on the slide groove 12. The rack passes through oil sleeve 1 25 and oil sleeve 26, thus installing the rack. Then, the linear motor 31 is started, driving the slider 32 and the moving bracket 33 to move, aligning the motor shaft 52 and the fixing key 53 with the gear hole. The electric telescopic rod 41 is then activated... The output shaft of the electric telescopic rod 41 is extended, causing the lifting frame 42 to descend directionally on the guide sleeve 44 via the guide shaft 43. This allows the motor shaft 52 and the fixing key 53 to be inserted into the gear hole. By starting the adjustable motor 51, the motor shaft 52 and the fixing key 53 are rotated, which in turn drives the gear to rotate. Through the meshing of the gear and rack, the rack is driven to reciprocate on the oil sleeve 25 and the oil sleeve 26, thereby detecting the stiffness of the gear and rack steering assembly. During this process, the stiffness detection process of the gear and rack steering assembly can be monitored by the camera 61.

[0037] The motor 21, linear motor 31, electric telescopic rod 41, adjustable motor 51, and camera 61 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0038] The main function achieved by this utility model is to enable the rapid installation of racks.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rack and pinion steering assembly stiffness testing device, comprising an operating table (01); characterized in that, It also includes a limit device (02), an adjustment device (03), a lifting device (04), a detection device (05), and a monitoring device (06). The limit device (02) and the adjustment device (03) are both installed on the operating table (01), the lifting device (04) and the monitoring device (06) are both installed on the adjustment device (03), and the detection device (05) is installed on the lifting device (04). The limiting device (02) is easy to install, the adjusting device (03) is used for position adjustment, the lifting device (04) is used for lifting, the detection device (05) is used for rotation detection, and the monitoring device (06) is used for monitoring.

2. The gear and rack steering assembly stiffness testing device as described in claim 1, characterized in that, The operating table (01) includes a base (11), which is installed in the working area and has a sliding groove (12).

3. The gear and rack steering assembly stiffness testing device as described in claim 2, characterized in that, The limiting device (02) includes a motor (21), a bidirectional motor (22), a limiting block one (23), a limiting block two (24), an oil sleeve one (25), and an oil sleeve two (26). The motor (21) is installed on the side of the base (11). The output end of the motor (21) is rotatably connected to the input end of the bidirectional motor (22). The limiting block one (23) and the limiting block two (24) are both installed on the bidirectional motor (22) by threaded connection. The limiting block one (23) and the limiting block two (24) are both slidably installed on the slide groove (12). The oil sleeve one (25) is installed on the limiting block one (23), and the oil sleeve two (26) is installed on the limiting block two (24).

4. The gear and rack steering assembly stiffness testing device as described in claim 2, characterized in that, The adjustment device (03) includes two sets of linear motors (31) and a moving bracket (33). The two sets of linear motors (31) are symmetrically installed on the top of the base (11). Each set of linear motors (31) is provided with a set of sliders (32). The moving bracket (33) is installed on the top of the sliders (32). The moving bracket (33) is provided with two sets of reinforcing ribs (34).

5. The gear and rack steering assembly stiffness testing device as described in claim 4, characterized in that, The lifting device (04) includes an electric telescopic rod (41), a lifting frame (42), a guide shaft (43), and a guide sleeve (44). The electric telescopic rod (41) is installed at the top of the movable support (33). An output shaft is provided on the electric telescopic rod (41). The lifting frame (42) is installed at the bottom of the output shaft of the electric telescopic rod (41). The guide shaft (43) is installed at the top of the lifting frame (42). The guide sleeve (44) is installed on the movable support (33) and is fitted onto the guide shaft (43).

6. The gear and rack steering assembly stiffness testing device as described in claim 5, characterized in that, The detection device (05) includes an adjustable motor (51) and a motor shaft (52). The adjustable motor (51) is mounted on the lifting frame (42). The output end of the adjustable motor (51) is rotatably connected to the input end of the motor shaft (52). A fixing key (53) is provided on the motor shaft (52).

7. The gear and rack steering assembly stiffness testing device as described in claim 4, characterized in that, The monitoring device (06) includes two sets of cameras (61), which are respectively installed on two sets of reinforcing ribs (34).

Images