A free play detection device for a recirculating ball steering gear

Abstract

The utility model relates to automobile steering system detection equipment technical field discloses a kind of free clearance detection devices of recirculating ball steering gear, including detection table, the top of detection table is placed with recirculating ball steering gear body, motor is connected with the docking mechanism for connecting motor and recirculating ball steering gear body between recirculating ball steering gear body, and the inner wall of installation side plate is fixedly connected with ranging sensor receiving module, and one end of recirculating ball steering gear body near installation side plate is installed ranging sensor reflection module by magnet magnetic attraction.The utility model is equipped with ranging sensor receiving module and ranging sensor emission module, the accurate detection of the free clearance of recirculating ball steering gear is realized, the efficiency and accuracy of detection are improved, and simultaneously, the docking mechanism is equipped, and recirculating ball steering gear is conveniently installed and disassembled, and different recirculating ball steering gears are conveniently detected, and the practicability of detection device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive steering system testing equipment, specifically to a device for detecting the free clearance of a recirculating ball steering gear. Background Technology

[0002] Recirculating ball steering systems are widely used in automotive steering systems. They are characterized by high efficiency and durability. Recirculating ball steering systems are mostly used in medium and large commercial vehicles, such as trucks and buses. Excessive free play in recirculating ball steering systems may lead to untimely steering and increase driving risks. By detecting the free play, problems can be identified in time and measures can be taken to ensure the safety and reliability of the vehicle steering system.

[0003] Currently, the detection of free clearance in recirculating ball steering systems mainly relies on manual experience or some simple measuring tools. Manual detection is prone to data errors and instability, resulting in inaccurate detection data and reduced efficiency of recirculating ball steering system free clearance. Therefore, those skilled in the art provide a recirculating ball steering system free clearance detection device to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a free clearance detection device for a recirculating ball steering gear, thereby solving the problems mentioned in the prior art.

[0005] This utility model provides the following technical solution: a free clearance detection device for a recirculating ball steering gear, comprising a detection platform, a recirculating ball steering gear body placed on the top of the detection platform, a moving mechanism provided on the top of the side of the detection platform away from the recirculating ball steering gear body, a motor fixedly installed on the top of the moving mechanism, a docking mechanism for connecting the motor and the recirculating ball steering gear body provided between the motor and the recirculating ball steering gear body, a mounting side plate fixedly installed on the end of the detection platform away from the recirculating ball steering gear body, a distance measuring sensor receiving module fixedly connected to the inner wall of the mounting side plate, and a distance measuring sensor reflecting module magnetically installed on the end of the recirculating ball steering gear body near the mounting side plate by a magnet, the distance measuring sensor receiving module and the distance measuring sensor reflecting module being symmetrically arranged.

[0006] As a preferred embodiment of the above technical solution, an abutment side plate is fixedly installed on the top of the testing platform at the end away from the mounting side plate. A sliding groove is provided inside the top of the testing platform. A clamping block is slidably connected to the top of the testing platform near the sliding groove. The bottom end of the clamping block is slidably fitted inside the sliding groove via a slider. A spring is fixedly connected to one end of the inner wall of the sliding groove. The end of the spring away from the sliding groove is fixedly connected to the slider at the bottom of the clamping block. The interior of the clamping block is symmetrically arranged with the inner wall of the abutment side plate.

[0007] As a preferred embodiment of the above technical solution, the recirculating ball steering body is placed between the abutting side plate and the clamping block. A first shaft is fixedly connected to the side of the recirculating ball steering body near the motor, and a connecting rod is fixedly connected to the side of the recirculating ball steering body near the mounting side plate. The end of the connecting rod away from the recirculating ball steering body is magnetically connected to the distance sensor reflection module through a magnet.

[0008] As a preferred embodiment of the above technical solution, the moving mechanism includes a mounting frame fixedly installed on the top of the testing platform. The mounting frame is located on one side of the first shaft. A lead screw is rotatably installed on the inner side of the mounting frame. A limit rod is fixedly connected to the side of the mounting frame near the lead screw. A threaded sleeve seat is threaded onto the surface of the lead screw. The side of the threaded sleeve seat away from the lead screw slides onto the surface of the limit rod through an opening groove. A throttle is fixedly connected to one end of the lead screw. The throttle is located on one side of the outer wall of the mounting frame. The top of the threaded sleeve seat is fixedly connected to the bottom of the motor. A second shaft is fixedly connected to the output end of the motor. The second shaft is arranged opposite to the first shaft.

[0009] As a preferred embodiment of the above technical solution, the docking mechanism includes a first mounting sleeve and a second mounting sleeve that are slidably fitted onto one end of the second shaft and one end of the first shaft, respectively. A splined sleeve wheel is fixedly connected to the side of the first mounting sleeve near the first shaft, and a splined gear is fixedly connected to the side of the second mounting sleeve near the second shaft. Multiple sets of splined grooves are formed in an annular array inside the splined sleeve wheel. The splined gear is embedded in the interior of the splined sleeve wheel away from the second mounting sleeve, and the surface of the splined gear meshes with the splined grooves formed inside the splined sleeve wheel for transmission.

[0010] As a preferred embodiment of the above technical solution, two sets of bolts are threadedly installed on one side of both the first and second mounting sleeves through threaded grooves. The ends of the two sets of bolts away from the first and second mounting sleeves are threaded into the threaded grooves opened inside the second and first shafts.

[0011] As a preferred embodiment of the above technical solution, a main controller is fixedly installed on the outer wall of the mounting side plate. The main controller is communicatively connected to the ranging sensor receiving module via a wire, and the ranging sensor receiving module and the ranging sensor reflecting module are communicatively connected via a wire.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention achieves precise detection of the free clearance of a recirculating ball steering gear through the setting of a distance measuring sensor receiving module and a distance measuring sensor transmitting module, thereby improving the efficiency and accuracy of the detection. At the same time, the setting of a docking mechanism facilitates the installation and disassembly of the recirculating ball steering gear, making it convenient to detect different recirculating ball steering gears and improving the practicality of the detection device. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of a free clearance detection device for a recirculating ball steering gear;

[0015] Figure 2 This is a schematic diagram of the testing platform in a recirculating ball steering gear free clearance testing device;

[0016] Figure 3 This is a schematic diagram of the moving mechanism in a free clearance detection device for a recirculating ball steering gear.

[0017] Figure 4 This is a schematic diagram of the docking mechanism in a recirculating ball steering gear free clearance detection device.

[0018] In the diagram: 1. Testing platform; 101. Abutting side plate; 102. Slide groove; 103. Clamping block; 104. Spring; 105. Mounting side plate; 2. Recirculating ball steering gear body; 201. First shaft; 202. Connecting rod; 3. Moving mechanism; 301. Mounting bracket; 302. Lead screw; 303. Limiting rod; 304. Lead sleeve seat; 305. Throttle; 4. Motor; 401. Second shaft; 5. Docking mechanism; 501. First mounting sleeve; 502. Splined sleeve wheel; 503. Second mounting sleeve; 504. Splined gear; 505. Bolt; 6. Distance sensor receiving module; 601. Distance sensor reflection module; 7. Main controller. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Please see Figure 1 - Figure 4As shown, this utility model provides a technical solution: a free clearance detection device for a recirculating ball steering gear, including a detection platform 1, a recirculating ball steering gear body 2 placed on the top of the detection platform 1, an abutment side plate 101 fixedly installed on the top of the detection platform 1 at the end away from the mounting side plate 105, a sliding groove 102 opened inside the top of the detection platform 1, a clamping block 103 slidably connected to the top of the detection platform 1 near the sliding groove 102, the bottom end of the clamping block 103 being slidably sleeved inside the sliding groove 102 by a slider, and a spring 104 fixedly connected to one end of the inner wall of the sliding groove 102. 4. The end away from the slide groove 102 is fixedly connected to the slider at the bottom of the clamping block 103. The interior of the clamping block 103 is symmetrically arranged with the inner wall of the abutting side plate 101. The circulating ball steering body 2 is placed between the abutting side plate 101 and the clamping block 103. The side of the circulating ball steering body 2 closest to the motor 4 is fixedly connected to the first shaft 201. The side of the circulating ball steering body 2 closest to the mounting side plate 105 is fixedly connected to the connecting rod 202. The end of the connecting rod 202 away from the circulating ball steering body 2 is magnetically connected to the ranging sensor reflection module 601 through a magnet.

[0021] First, the clamping block 103 is slid inside the slide groove 102 by pulling, which facilitates the expansion of the distance between the abutting side plate 101 and the clamping block 103. Then, the recirculating ball steering body 2 is placed between the abutting side plate 101 and the clamping block 103. At this time, the clamping block 103 is released, and under the elastic force of the spring 104, the clamping block 103 is pushed to clamp the recirculating ball steering body 2, which facilitates fixing the recirculating ball steering body 2 to the top of the testing table 1.

[0022] As one implementation method in this embodiment, please refer to Figure 1 and Figure 3 As shown, a moving mechanism 3 is provided on the top of the side of the testing platform 1 away from the recirculating ball steering body 2. A motor 4 is fixedly installed on the top of the moving mechanism 3. The moving mechanism 3 includes a mounting bracket 301 fixedly installed on the top of the testing platform 1. The mounting bracket 301 is located on one side of the first shaft 201. A lead screw 302 is rotatably installed on the inner side of the mounting bracket 301. A limit rod 303 is fixedly connected to the side of the mounting bracket 301 near the lead screw 302. A threaded sleeve seat 304 is threaded onto the surface of the lead screw 302. The side of the threaded sleeve seat 304 away from the lead screw 302 is slidably fitted onto the surface of the limit rod 303 through an opening groove. A throttle 305 is fixedly connected to one end of the lead screw 302. The throttle 305 is located on one side of the outer wall of the mounting bracket 301. The top of the threaded sleeve seat 304 is fixedly connected to the bottom of the motor 4. A second shaft 401 is fixedly connected to the output end of the motor 4. The second shaft 401 is arranged opposite to the first shaft 201.

[0023] Rotating the throttle 305 drives the lead screw 302 to rotate. Since the lead screw 302 has a threaded sleeve seat 304, the rotation of the lead screw 302 will cause the sleeve seat 304 to move parallel to the mounting bracket 301. At the same time, the sleeve seat 304 slides on the surface of the limit rod 303 through the opened slot, thus ensuring the stability of the movement of the sleeve seat 304. The parallel movement of the sleeve seat 304 drives the motor 4 and the second shaft 401 to move closer to the recirculating ball steering body 2 and the first shaft 201. When the motor 4 and the second shaft 401 approach the preset position of the first shaft 201, the throttle 305 is stopped.

[0024] As one implementation method in this embodiment, please refer to Figure 1 , Figure 3 and Figure 4 As shown, a docking mechanism 5 is provided between the motor 4 and the recirculating ball steering gear body 2 to connect the motor 4 and the recirculating ball steering gear body 2. The docking mechanism 5 includes a first mounting sleeve 501 and a second mounting sleeve 503, which are respectively slidably mounted on one end of the second shaft 401 and the first shaft 201. A splined sleeve wheel 502 is fixedly connected to the side of the first mounting sleeve 501 near the first shaft 201, and a splined gear 504 is fixedly connected to the side of the second mounting sleeve 503 near the second shaft 401. The splined sleeve wheel 502 has an internal annular array of open... Multiple sets of spline grooves are provided. The spline gear 504 is embedded in the spline sleeve 502 away from the second mounting sleeve 503. The surface of the spline gear 504 meshes with the spline groove opened inside the spline sleeve 502 for transmission. Two sets of bolts 505 are threadedly installed on one side of the first mounting sleeve 501 and the second mounting sleeve 503 through the threaded grooves. The ends of the two sets of bolts 505 away from the first mounting sleeve 501 and the second mounting sleeve 503 are threaded into the threaded grooves opened inside the second shaft 401 and the first shaft 201.

[0025] When the second shaft 401 approaches the preset position of the first shaft 201, it should be noted that there is a certain distance between the preset position of the second shaft 401 and the first shaft 201, so that the first mounting sleeve 501 and the second mounting sleeve 503 can be respectively fitted onto the second shaft 401 and the first shaft 201. At this time, by rotating the bolt 505, it is gradually moved closer to the second shaft 401 and the first shaft 201 along the threaded groove inside the first mounting sleeve 501 and the second mounting sleeve 503 until one end of the bolt 505 is fully threaded into the threaded groove inside the second shaft 401 and the first shaft 201, so as to achieve a stable connection between the first mounting sleeve 501 and the second mounting sleeve 503 and the second shaft 401 and the first shaft 201.

[0026] When the first mounting sleeve 501 and the second mounting sleeve 503 are fixedly installed on the second shaft 401 and the first shaft 201, the throttle 305 is rotated again, causing the thread sleeve seat 304 to drive the motor 4 to move again toward the recirculating ball steering body 2, until the splined sleeve wheel 502 on the second shaft 401 and the splined gear 504 on the first shaft 201 are fully engaged, which facilitates the docking of the second shaft 401 and the first shaft 201, so that the second shaft 401 and the first shaft 201 can rotate synchronously through the meshing transmission of the splined sleeve wheel 502 and the splined gear 504.

[0027] As one implementation method in this embodiment, please refer to Figure 1 As shown, a mounting side plate 105 is fixedly installed at the end of the testing platform 1 away from the recirculating ball steering body 2. A distance measuring sensor receiving module 6 is fixedly connected to the inner wall of the mounting side plate 105. A distance measuring sensor reflecting module 601 is magnetically installed at the end of the recirculating ball steering body 2 near the mounting side plate 105. The distance measuring sensor receiving module 6 and the distance measuring sensor reflecting module 601 are symmetrically arranged. A main controller 7 is fixedly installed on the outer wall of the mounting side plate 105. The main controller 7 is communicatively connected to the distance measuring sensor receiving module 6 through wires. The distance measuring sensor receiving module 6 and the distance measuring sensor reflecting module 601 are communicatively connected through wires.

[0028] When the recirculating ball steering gear body 2 is subjected to free clearance testing on the testing platform 1, the starter motor 4 drives the first shaft 201 to rotate through the docking mechanism 5, thereby simulating the rotation state of the recirculating ball steering gear body 2 in actual working process. As the first shaft 201 rotates, the connecting rod 202 moves towards the mounting side plate 105 through the transmission components inside the recirculating ball steering gear body 2. At this time, the distance sensor reflection module 601 moves with the movement of the connecting rod 202, and the distance sensor receiving module 6 continuously receives signals from the distance sensor reflection module 601. The distance sensor receiving module 6 transmits the data signals to the main controller 7. The main controller 7 processes these signals in real time. By measuring parameters such as the round-trip time or phase difference of the signals, the size of the free clearance generated by the recirculating ball steering gear body 2 during rotation can be accurately calculated. This free clearance is the gap generated by the mutual cooperation between the components inside the recirculating ball steering gear body 2 during rotation.

[0029] It should be noted that the model of the ranging sensor is TFMINI (not specifically designated). The ranging sensor receiving module 6 and the ranging sensor reflecting module 601 are existing technologies and will not be described in detail here.

[0030] Working principle: In use, first place the recirculating ball steering body 2 between the abutting side plate 101 and the clamping block 103. Through the elastic force of the spring 104, push the clamping block 103 to clamp the recirculating ball steering body 2 and fix the recirculating ball steering body 2 on the top of the testing table 1. Then, drive the lead screw 302 to rotate by turning the throttle 305. The rotation of the lead screw 302 drives the lead sleeve seat 304 to move parallel on the mounting frame 301. The lead sleeve seat 304 drives the motor 4 and the second shaft 401 to move closer to the recirculating ball steering body 2 and the first shaft 201.

[0031] When the motor 4 and the second shaft 401 approach the preset position of the first shaft 201, the throttle 305 is stopped. At this time, the first mounting sleeve 501 and the second mounting sleeve 503 are respectively fitted onto the second shaft 401 and the first shaft 201. By rotating the bolt 505, it is gradually moved closer to the second shaft 401 and the first shaft 201 along the threaded groove inside the first mounting sleeve 501 and the second mounting sleeve 503 until one end of the bolt 505 is fully threaded into the threaded groove inside the second shaft 401 and the first shaft 201, thus achieving a stable connection between the first mounting sleeve 501 and the second mounting sleeve 503 and the second shaft 401 and the first shaft 201.

[0032] When the first mounting sleeve 501 and the second mounting sleeve 503 are fixedly installed on the second shaft 401 and the first shaft 201, the throttle 305 is turned again, so that the thread sleeve seat 304 drives the motor 4 to move again towards the recirculating ball steering gear body 2 until the splined sleeve wheel 502 on the second shaft 401 is fully engaged with the spline gear 504 on the first shaft 201. At this time, the motor 4 is started, and the output end of the motor 4 drives the second shaft 401 to rotate. The second shaft 401 drives the first shaft 201 to rotate synchronously through the meshing transmission of the splined sleeve wheel 502 and the spline gear 504, thereby simulating the rotation state of the recirculating ball steering gear body 2 in the actual working process.

[0033] As the first shaft 201 rotates, the connecting rod 202 moves through the transmission components inside the recirculating ball steering gear body 2. At this time, the distance sensor reflection module 601 moves along with the connecting rod 202, and the distance sensor receiving module 6 continuously receives signals from the distance sensor reflection module 601. The distance sensor receiving module 6 transmits the data signals to the main controller 7, which processes these signals in real time. By measuring parameters such as the round-trip time or phase difference of the signals, the main controller 7 accurately calculates the size of the free clearance generated by the recirculating ball steering gear body 2 during rotation, thereby completing the detection of the free clearance of the recirculating ball steering gear.

[0034] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A free clearance detection device for a recirculating ball steering gear, comprising a detection table (1), characterized in that: The top of the testing platform (1) is equipped with a recirculating ball steering body (2). A moving mechanism (3) is provided on the top of the side of the testing platform (1) away from the recirculating ball steering body (2). A motor (4) is fixedly installed on the top of the moving mechanism (3). A docking mechanism (5) for connecting the motor (4) and the recirculating ball steering body (2) is provided between the motor (4) and the recirculating ball steering body (2). A mounting side plate (105) is fixedly installed on the end of the testing platform (1) away from the recirculating ball steering body (2). A distance measuring sensor receiving module (6) is fixedly connected to the inner wall of the mounting side plate (105). A distance measuring sensor reflecting module (601) is magnetically installed on the end of the recirculating ball steering body (2) near the mounting side plate (105). The distance measuring sensor receiving module (6) and the distance measuring sensor reflecting module (601) are symmetrically arranged.

2. The free clearance detection device for a recirculating ball steering gear according to claim 1, characterized in that: The top of the testing platform (1) away from the mounting side plate (105) is fixedly installed with an abutting side plate (101). The top of the testing platform (1) has a sliding groove (102). The top of the testing platform (1) near the sliding groove (102) is slidably connected with a clamping block (103). The bottom end of the clamping block (103) is slidably sleeved inside the sliding groove (102) by a slider. One end of the inner wall of the sliding groove (102) is fixedly connected with a spring (104). The end of the spring (104) away from the sliding groove (102) is fixedly connected to the slider at the bottom of the clamping block (103). The inside of the clamping block (103) is symmetrically arranged with the inner wall of the abutting side plate (101).

3. The free clearance detection device for a recirculating ball steering gear according to claim 1, characterized in that: The recirculating ball steering body (2) is placed between the abutting side plate (101) and the clamping block (103). The recirculating ball steering body (2) is fixedly connected to the side of the motor (4) with a first shaft (201) and the recirculating ball steering body (2) is fixedly connected to the side of the mounting side plate (105). The end of the connecting rod (202) away from the recirculating ball steering body (2) is magnetically connected to the distance sensor reflection module (601) through a magnet.

4. The free clearance detection device for a recirculating ball steering gear according to claim 1, characterized in that: The moving mechanism (3) includes a mounting bracket (301) fixedly installed on the top of the testing table (1). The mounting bracket (301) is located on one side of the first shaft (201). A lead screw (302) is rotatably mounted on the inner side of the mounting bracket (301). A limit rod (303) is fixedly connected to the side of the mounting bracket (301) near the lead screw (302). A threaded sleeve seat (304) is threaded onto the surface of the lead screw (302). The threaded sleeve seat (304) is located away from the lead screw. One side of (302) is slidably fitted onto the surface of the limiting rod (303) through the opening slot. One end of the lead screw (302) is fixedly connected to the throttle (305). The throttle (305) is located on one side of the outer wall of the mounting bracket (301). The top of the lead sleeve seat (304) is fixedly connected to the bottom of the motor (4). The output end of the motor (4) is fixedly connected to the second shaft (401). The second shaft (401) is arranged opposite to the first shaft (201).

5. The free clearance detection device for a recirculating ball steering gear according to claim 1, characterized in that: The docking mechanism (5) includes a first mounting sleeve (501) and a second mounting sleeve (503) that are slidably fitted onto one end of the second shaft (401) and the first shaft (201), respectively. A splined sleeve wheel (502) is fixedly connected to the side of the first mounting sleeve (501) near the first shaft (201), and a splined gear (504) is fixedly connected to the side of the second mounting sleeve (503) near the second shaft (401). Multiple sets of splined grooves are opened in an annular array inside the splined sleeve wheel (502). The splined gear (504) is embedded in the splined sleeve wheel (502) away from the second mounting sleeve (503), and the surface of the splined gear (504) meshes with the splined grooves opened inside the splined sleeve wheel (502) for transmission.

6. The free clearance detection device for a recirculating ball steering gear according to claim 5, characterized in that: Two sets of bolts (505) are threaded into the inside of one side of the first mounting sleeve (501) and the second mounting sleeve (503) through threaded grooves. The ends of the two sets of bolts (505) away from the first mounting sleeve (501) and the second mounting sleeve (503) are threaded into the threaded grooves opened inside the second shaft (401) and the first shaft (201).

7. The free clearance detection device for a recirculating ball steering gear according to claim 1, characterized in that: The main controller (7) is fixedly installed on the outer wall of the mounting side plate (105). The main controller (7) is connected to the ranging sensor receiving module (6) via wires. The ranging sensor receiving module (6) and the ranging sensor reflection module (601) are connected via wires.

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