Axial displacement detection mechanism and vehicle test system

Abstract

The utility model provides an axial displacement detection mechanism and a vehicle test system, the axial displacement detection mechanism comprises a mounting rod, the mounting rod is arranged on one side, away from a rotating shaft, of a to-be-tested workpiece, the to-be-tested workpiece is rotatably arranged on an equipment body through the rotating shaft, and the central axis of the mounting rod coincides with the central axis of the to-be-tested workpiece; the adapter seat is rotationally arranged on the mounting rod; the pull rope displacement sensor is arranged on the equipment body, a pull rope of the pull rope displacement sensor is connected with the adapter, a preset angle is formed between the pull rope of the pull rope displacement sensor and the central axis of the mounting rod, and the pull rope displacement sensor is used for detecting the axial displacement of the workpiece to be detected. According to the axial displacement detection mechanism and the vehicle testing system, the space of the side, away from the rotating shaft, of the to-be-detected workpiece is effectively utilized, installation and arrangement of the detection mechanism are achieved, and the detection mechanism is not limited by the space of the side, close to the rotating shaft, of the to-be-detected workpiece.

Description

Technical Field

[0001] The present disclosure relates to the technical field of axial displacement detection, and in particular to an axial displacement detection mechanism and a vehicle testing system. Background Art

[0002] During the development and testing of vehicles and other equipment, it is usually necessary to collect various signals of the equipment under specific working conditions for analysis to ensure the high quality of the finished product. Among them, the axial displacement of the rotating workpiece in the equipment is one of the most important test parameters, but with the update and upgrade of the equipment, the space close to the rotating shaft of the workpiece is gradually occupied and compressed, making it difficult to install and arrange the detection mechanism due to space limitations, making it difficult to collect axial displacement and increasing the detection cost. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, an object of the present disclosure is to provide an axial displacement detection mechanism and a vehicle testing system.

[0005] To achieve the above-mentioned purpose, the first aspect of the present disclosure provides an axial displacement detection mechanism, comprising: a mounting rod, which is arranged on a side of a workpiece to be measured away from a rotating shaft, wherein the workpiece to be measured is rotatably arranged on a device body through the rotating shaft, and a central axis of the mounting rod coincides with a central axis of the workpiece to be measured; an adapter, which is rotatably arranged on the mounting rod; and a pull-wire displacement sensor, which is arranged on the device body, and a pull wire of the pull-wire displacement sensor is connected to the adapter, and a preset angle is formed between the pull wire displacement sensor and the central axis of the mounting rod, and the pull wire displacement sensor is used to detect the axial displacement of the workpiece to be measured.

[0006] Optionally, the axial displacement detection mechanism further includes: an adapter plate, the adapter plate is arranged on a side of the workpiece to be measured away from the rotating shaft, and the mounting rod is arranged on the adapter plate.

[0007] Optionally, the mounting rod and the adapter plate are threadedly connected, and when the mounting rod rotates relative to the adapter plate, the mounting rod moves axially so that the pull rope of the pull rope displacement sensor and the central axis of the mounting rod form the preset angle.

[0008] Optionally, the axial displacement detection mechanism also includes: a first constraint nut, which is threadedly mounted on the mounting rod, and the first constraint nut abuts against a side of the adapter plate close to the workpiece to be measured; and / or a second constraint nut, which is threadedly mounted on the mounting rod, and the second constraint nut abuts against a side of the adapter plate away from the workpiece to be measured.

[0009] Optionally, the workpiece to be measured is set on the shaft head of the rotating shaft by at least one first bolt, and the threaded portion of the first bolt passes through the workpiece to be measured and is threadedly connected to the shaft head of the rotating shaft, and the head of the first bolt abuts against the side of the workpiece to be measured away from the rotating shaft; the axial displacement detection mechanism also includes: at least one clamping device and at least one second bolt, the clamping device is clamped on the head of the first bolt, the threaded portion of the second bolt passes through the adapter plate and is threadedly connected to the clamping device, and the head of the second bolt abuts against the side of the adapter plate away from the workpiece to be measured.

[0010] Optionally, the clamping device also includes: a locking barrel, which is located between the adapter plate and the first bolt; a locking sleeve, one end of which is movably arranged in the locking barrel, and the threaded portion of the second bolt passes through the locking barrel and is threadedly connected to the locking sleeve, and an elastic clamping mouth is arranged at one end of the locking sleeve away from the adapter plate, and the clamping mouth is sleeved on the head of the second bolt; wherein, when the second bolt rotates relative to the locking sleeve, the locking sleeve moves axially to cause the clamping mouth to contract and clamp to the head of the second bolt, or to cause the clamping mouth to expand and release the head of the second bolt.

[0011] Optionally, the locking sleeve includes: a linkage seat, which is movably arranged in the lock barrel, and the threaded portion of the second bolt passes through the lock barrel and is threadedly connected to the linkage seat; a plurality of elastic strips, which are arranged at an end of the linkage seat away from the adapter plate, and the plurality of elastic strips are distributed at intervals along the circumference of the linkage seat, and the end of the elastic strip away from the linkage seat extends obliquely in a direction away from the central axis of the linkage seat, and the plurality of elastic strips form the clamping mouth; wherein, when the second bolt rotates relative to the linkage seat, the linkage seat moves axially so that the plurality of elastic strips approach each other and contract the clamping mouth, or move away from each other and expand the clamping mouth.

[0012] Optionally, the adapter plate is provided with at least one strip-shaped hole, and the length direction of the strip-shaped hole is located in the radial direction of the mounting rod, and the threaded portion of the second bolt passes through the strip-shaped hole.

[0013] Optionally, the axial displacement detection mechanism further includes: a micro bearing, the inner ring of the micro bearing is sleeved on the mounting rod, and the adapter seat is sleeved on the outer ring of the micro bearing.

[0014] Optionally, a boss is provided at one end of the mounting rod away from the workpiece to be measured, and the diameter of the boss is smaller than the diameter of the mounting rod, and the inner ring of the micro-bearing is sleeved on the boss; the axial displacement detection mechanism also includes: a third bolt, the threaded portion of the third bolt passes through the inner ring of the micro-bearing and is threadedly connected to the boss, and the head of the third bolt abuts against the inner ring of the micro-bearing, and makes the inner ring of the micro-bearing abut against the end of the mounting rod away from the workpiece to be measured.

[0015] Optionally, the axial displacement detection mechanism further includes: a gasket, which is sleeved on the threaded portion of the third bolt, and the gasket abuts between the head of the third bolt and the inner ring of the miniature bearing.

[0016] Optionally, the adapter seat includes: an adapter sleeve, which is mounted on the outer ring of the miniature bearing and is connected to the pull rope of the pull rope displacement sensor; a first clamping plate, which is arranged on the side of the adapter sleeve close to the workpiece to be measured, and the first clamping plate abuts against the side of the miniature bearing outer ring close to the workpiece to be measured, and the mounting rod passes through the first clamping plate and a gap is provided between the mounting rod and the first clamping plate; a second clamping plate, which is arranged on the side of the adapter sleeve away from the workpiece to be measured, and the second clamping plate abuts against the side of the miniature bearing outer ring away from the workpiece to be measured.

[0017] Optionally, the adapter seat also includes: a fourth bolt, the threaded portion of the fourth bolt passes through the second clamping plate and is threadedly connected to the adapter sleeve, and the head of the fourth bolt abuts against the second clamping plate; wherein the end of the pull rope away from the equipment body is located between the second clamping plate and the adapter sleeve and is wrapped around the threaded portion of the fourth bolt.

[0018] Optionally, the preset angle is 90 degrees; and / or the pull rope displacement sensor is located above the adapter.

[0019] A second aspect of the present disclosure provides a vehicle testing system, comprising: at least one axial displacement detection mechanism as provided in the first aspect of the present disclosure, wherein a mounting rod of the axial displacement detection mechanism is arranged on a side of the wheel hub of the vehicle away from the axle, and a central axis of the mounting rod coincides with a central axis of the wheel, and a pull-rope displacement sensor of the axial displacement detection mechanism is arranged on the body of the vehicle, and the pull-rope displacement sensor is used to detect the axial displacement of the wheel to obtain suspension displacement data of the vehicle.

[0020] The technical solution provided by the present disclosure may have the following beneficial effects:

[0021] Since the mounting rod is arranged on the side of the workpiece to be measured away from the rotating shaft, and the central axis of the mounting rod coincides with the central axis of the workpiece to be measured, the mounting rod can rotate synchronously with the workpiece to be measured, while avoiding radial displacement, and since the adapter is rotatably arranged on the mounting rod, and the pull rope of the pull rope displacement sensor is connected to the adapter, when the mounting rod rotates synchronously with the workpiece to be measured, the adapter can remain stationary in the rotation direction of the mounting rod, and can only move axially with the mounting rod. Therefore, when the workpiece to be measured has axial displacement, the mounting rod and the adapter on the workpiece to be measured move axially accordingly, thereby driving the pull rope of the pull rope displacement sensor to retract, and then using the pull rope displacement sensor to detect the axial displacement of the workpiece to be measured; therefore, through the cooperation of the mounting rod, the adapter and the pull rope displacement sensor, not only the accurate detection of the axial displacement of the workpiece to be measured is realized, thereby meeting the research and development and testing requirements of the equipment, but also the space on the side of the workpiece to be measured away from the rotating shaft is effectively utilized, the installation arrangement of the detection mechanism is realized, and it is not limited by the space on the side of the workpiece to be measured close to the rotating shaft, thereby reducing the difficulty of collecting the axial displacement and reducing the detection cost of the axial displacement.

[0022] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is a three-dimensional assembly diagram of an axial displacement detection mechanism proposed in one embodiment of the present disclosure;

[0025] Figure 2 is a three-dimensional diagram of an assembled axial displacement detection mechanism according to an embodiment of the present disclosure;

[0026] Figure 3 It is a three-dimensional assembly diagram of a micro bearing in an axial displacement detection mechanism proposed in an embodiment of the present disclosure;

[0027] As shown in the figure: 1. Install the rod;

[0028] 2. adapter seat, 21. adapter sleeve, 22. first clamping plate, 23. second clamping plate, 24. fourth bolt;

[0029] 3. pull rope displacement sensor, 4. adapter plate, 5. first constraint nut, 6. second constraint nut;

[0030] 7. Clamping device, 71. Lock barrel, 72. Lock sleeve, 721. Linking seat, 722. Elastic strip;

[0031] 8. second bolt, 9. strip hole, 10. miniature bearing, 11. boss, 12. third bolt, 13. gasket;

[0032] 100. Equipment body, 200. Workpiece to be measured, 300. First bolt. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0034] like Figure 1 and Figure 2 As shown, the embodiment of the present disclosure proposes an axial displacement detection mechanism, including: a mounting rod 1, an adapter 2 and a pull-wire displacement sensor 3, the mounting rod 1 is arranged on a side of the workpiece 200 to be measured away from the rotating shaft (not shown in the figure), wherein the workpiece 200 to be measured is rotatably arranged on the equipment body 100 through the rotating shaft, and the central axis of the mounting rod 1 coincides with the central axis of the workpiece 200 to be measured, the adapter 2 is rotatably arranged on the mounting rod 1, the pull-wire displacement sensor 3 is arranged on the equipment body 100, and the pull wire of the pull-wire displacement sensor 3 is connected to the adapter 2, the pull wire of the pull-wire displacement sensor 3 and the central axis of the mounting rod 1 are at a preset angle, and the pull-wire displacement sensor 3 is used to detect the axial displacement of the workpiece 200 to be measured.

[0035] It can be understood that, since the mounting rod 1 is arranged on the side of the workpiece 200 to be measured away from the rotating shaft, and the central axis of the mounting rod 1 coincides with the central axis of the workpiece 200 to be measured, the mounting rod 1 can rotate synchronously with the workpiece 200 to be measured, while avoiding radial displacement. Moreover, since the adapter 2 is rotatably arranged on the mounting rod 1, and the pull rope of the pull rope displacement sensor 3 is connected to the adapter 2, when the mounting rod 1 rotates synchronously with the workpiece 200 to be measured, the adapter 2 can remain stationary in the rotation direction of the mounting rod 1, and can only move axially with the mounting rod 1. Therefore, when the workpiece 200 to be measured has axial displacement, the mounting rod 1 and the adapter 2 on the workpiece 200 to be measured will move axially accordingly, thereby driving the pull rope of the pull rope displacement sensor 3 to retract and retract, and then the pull rope displacement sensor 3 is used to detect the axial displacement of the workpiece 200 to be measured.

[0036] Therefore, through the cooperation of the mounting rod 1, the adapter 2 and the pull-wire displacement sensor 3, not only the accurate detection of the axial displacement of the workpiece 200 to be measured is achieved, thereby meeting the research and development and testing needs of the equipment, but also the space of the workpiece 200 to be measured away from the rotating shaft is effectively utilized, and the installation arrangement of the detection mechanism is realized, and is not restricted by the space of the workpiece 200 to be measured close to the rotating shaft, thereby reducing the difficulty of collecting the axial displacement and reducing the detection cost of the axial displacement.

[0037] It should be noted that the device includes: a device body 100, a rotating shaft and a workpiece 200 to be tested. The workpiece 200 to be tested is set on the device body 100 by rotating the rotating shaft. The detection mechanism of this embodiment realizes the detection of the axial displacement of the workpiece 200 to be tested. At the same time, the installation arrangement is realized by using the space outside the workpiece 200 to be tested (the side of the workpiece 200 to be tested away from the rotating shaft), and is not limited by the space inside the workpiece 200 to be tested (the side of the workpiece 200 to be tested close to the rotating shaft). Among them, the specific type of the device can be set according to actual needs, and there is no limitation to this. For example, the device can be a mobile device, a fixed device, etc.

[0038] For example, the device can be a vehicle, the device body 100 is the vehicle body, the device shaft is the vehicle axle, and the device workpiece 200 to be tested is the vehicle wheel. In some relevant embodiments, the pull-wire displacement sensor 3 is installed between the shock absorber cylinder wall and the vehicle body tower of the vehicle, and the pull-wire displacement sensor 3 is used to detect the suspension displacement of the vehicle (between the body and the axle head of the axle); in some relevant embodiments, the strain gauge is pasted on the coil spring to detect the suspension displacement of the vehicle by calibration conversion. However, with the popularization of air springs, the space near the axle side of the wheel is occupied and compressed, which limits the installation and arrangement of the detection mechanism. The detection mechanism of this embodiment not only realizes the detection of the axial displacement of the wheel, thereby obtaining the suspension displacement data of the vehicle by using the axial displacement of the wheel, but also realizes the installation and arrangement by using the space outside the wheel, and is not affected by the air spring and other devices inside the wheel.

[0039] The mounting rod 1 is used to be set on the side of the workpiece 200 to be measured away from the rotating shaft, so as to achieve synchronous rotation with the workpiece 200 to be measured, and at the same time do not generate radial displacement with the rotation of the workpiece 200 to be measured. The specific type of the mounting rod 1 can be set according to actual needs, and there is no limitation to this. For example, the mounting rod 1 is a rod body structure, and the mounting rod 1 can be detachably set on the side of the workpiece 200 to be measured away from the rotating shaft by means of clamping, etc., and can also be fixed to the side of the workpiece 200 to be measured away from the rotating shaft by means of welding, etc. During installation, the mounting rod 1 can use a laser level to ensure the horizontality of the mounting rod 1 and the coincidence of the center axis with the center axis of the workpiece 200 to be measured.

[0040] The adapter seat 2 is used to be rotatably set on the mounting rod 1, so as to cooperate with the mounting rod 1 to keep the rope of the rope displacement sensor 3 at the rotation center axis of the workpiece 200 to be measured, and does not rotate with the rotation of the workpiece 200 to be measured, so that the rope extension and retraction of the rope displacement sensor 3 is only related to the axial displacement of the workpiece 200 to be measured, and is not affected by the displacement of the workpiece 200 to be measured in radial, circumferential and other directions, thereby ensuring the rope displacement sensor 3 to accurately detect the axial displacement of the workpiece 200 to be measured. The specific type of the adapter seat 2 can be set according to actual needs and is not limited to this.

[0041] The pull-wire displacement sensor 3 can also be called a pull-wire displacement sensor, a pull-rod displacement sensor, etc. The pull-wire displacement sensor 3 is used to output a corresponding detection signal according to the extension and contraction amount of the pull-wire, and because the extension and contraction amount of the pull-wire corresponds to the axial displacement amount of the workpiece 200 to be measured, the pull-wire displacement sensor 3 can accurately detect the axial displacement of the workpiece 200 to be measured. The specific type of the pull-wire displacement sensor 3 can be set according to actual needs and is not limited to this. Among them, the extension and contraction of the pull-wire displacement sensor 3 has a certain damping force, and there is also a certain friction force between the mounting rod 1 and the adapter 2 when it rotates. The damping force should be greater than the friction force to ensure that the adapter 2 avoids rotating with the rotation of the mounting rod 1 under the action of the pull-wire damping force.

[0042] like Figure 1 and Figure 2 As shown, in some embodiments, the axial displacement detection mechanism further includes: an adapter plate 4 , the adapter plate 4 is arranged on a side of the workpiece 200 to be measured away from the rotating shaft, and the mounting rod 1 is arranged on the adapter plate 4 .

[0043] It can be understood that since the adapter plate 4 is arranged on the side of the workpiece to be measured 200 away from the rotating shaft, and the mounting rod 1 is arranged on the adapter plate 4, the mounting rod 1 can be arranged on the side of the workpiece to be measured 200 away from the rotating shaft using the adapter plate 4, thereby ensuring the stable synchronous rotation of the mounting rod 1 and the workpiece to be measured 200.

[0044] It should be noted that the adapter plate 4 is used to stably set the mounting rod 1 on the side of the workpiece 200 to be measured away from the rotating axis. The specific type of the adapter plate 4 can be set according to actual needs and is not limited to this. For example, the adapter plate 4 can be a disc structure, and the central axis of the adapter plate 4 coincides with the central axis of the workpiece 200 to be measured.

[0045] Compared with the mounting rod 1 , the contact area between the adapter plate 4 and the workpiece 200 to be measured is larger, so that it is easier to be stably set on the workpiece 200 to be measured.

[0046] like Figure 1 and Figure 2As shown, in some embodiments, the mounting rod 1 and the adapter plate 4 are threadedly connected, and when the mounting rod 1 rotates relative to the adapter plate 4, the mounting rod 1 moves axially so that the pull rope of the pull rope displacement sensor 3 and the central axis of the mounting rod 1 are at a preset angle.

[0047] It can be understood that since the mounting rod 1 and the adapter plate 4 are threadedly connected, the mounting rod 1 can adjust its axial position by rotating relative to the adapter plate 4, so that the detection mechanism can ensure that the preset angle is always maintained between the rope of the rope displacement sensor 3 and the central axis of the mounting rod 1 in different devices and scenarios, thereby facilitating the use of the rope displacement sensor 3 to achieve accurate detection of the axial displacement of the workpiece 200 to be measured.

[0048] It should be noted that the threaded connection between the mounting rod 1 and the adapter plate 4 ensures that the pull-wire displacement sensor 3 can accurately detect the axial displacement of the workpiece 200 to be measured, while making the detection mechanism more versatile.

[0049] For example, when the mounting rod 1 rotates forwardly relative to the adapter plate 4, the mounting rod 1 moves in a direction close to the workpiece 200 to be measured, so that the angle between the pull rope and the central axis of the mounting rod 1 increases; when the mounting rod 1 rotates backward relative to the adapter plate 4, the mounting rod 1 moves in a direction away from the workpiece 200 to be measured, so that the angle between the pull rope and the central axis of the mounting rod 1 decreases. Therefore, by rotating the mounting rod 1 forwardly and backward relative to the adapter plate 4, the angle between the pull rope and the central axis of the mounting rod 1 can be adjusted to a preset angle.

[0050] The external thread of the mounting rod 1 is matched with the internal thread of the adapter plate 4. The specific matching structure between the mounting rod 1 and the adapter plate 4 can be set according to actual needs and is not limited thereto.

[0051] like Figure 1 As shown, in some embodiments, the axial displacement detection mechanism further includes: a first constraint nut 5, which is threadedly sleeved on the mounting rod 1, and the first constraint nut 5 abuts against a side of the adapter plate 4 close to the workpiece 200 to be measured.

[0052] It can be understood that since the first constraint nut 5 is threadedly mounted on the mounting rod 1, and the first constraint nut 5 abuts against the side of the adapter plate 4 close to the workpiece 200 to be measured, the first constraint nut 5 can form a constraint limit on the mounting rod 1 on the side of the adapter plate 4 close to the workpiece 200 to be measured, thereby ensuring the stable setting of the mounting rod 1 on the adapter plate 4, and further ensuring the accurate detection of the axial displacement of the workpiece 200 to be measured by the pull rope displacement sensor 3.

[0053] like Figure 1 and Figure 2As shown, in some embodiments, the axial displacement detection mechanism further includes: a second constraint nut 6, which is threadedly sleeved on the mounting rod 1, and the second constraint nut 6 abuts against a side of the adapter plate 4 away from the workpiece 200 to be measured.

[0054] It can be understood that since the second constraint nut 6 is threadedly mounted on the mounting rod 1, and the second constraint nut 6 abuts against the side of the adapter plate 4 away from the workpiece 200 to be measured, the second constraint nut 6 can form a constraint limit on the mounting rod 1 on the side of the adapter plate 4 away from the workpiece 200 to be measured, thereby ensuring the stable setting of the mounting rod 1 on the adapter plate 4, and further ensuring the accurate detection of the axial displacement of the workpiece 200 to be measured by the pull rope displacement sensor 3.

[0055] It should be noted that the mounting rod 1 can be positioned on the adapter plate 4 using only the first constraint nut 5, or can be positioned on the adapter plate 4 using only the second constraint nut 6, or can be positioned on the adapter plate 4 using the cooperation of the first constraint nut 5 and the second constraint nut 6 at the same time, and there is no limitation to this.

[0056] The internal threads of the first constraint nut 5 and the second constraint nut 6 are respectively matched with the external threads on the mounting rod 1 . The specific types of the first constraint nut 5 and the second constraint nut 6 can be set according to actual needs and are not limited thereto.

[0057] like Figure 1 and Figure 2 As shown, in some embodiments, the workpiece 200 to be measured is set on the shaft head of the rotating shaft by at least one first bolt 300, and the threaded portion of the first bolt 300 passes through the workpiece 200 to be measured and is threadedly connected to the shaft head of the rotating shaft, and the head of the first bolt 300 abuts against the side of the workpiece 200 to be measured away from the rotating shaft; the axial displacement detection mechanism also includes: at least one clamping device 7 and at least one second bolt 8, the clamping device 7 is clamped on the head of the first bolt 300, the threaded portion of the second bolt 8 passes through the adapter plate 4 and is threadedly connected to the clamping device 7, and the head of the second bolt 8 abuts against the side of the adapter plate 4 away from the workpiece 200 to be measured.

[0058] It can be understood that since the threaded portion of the first bolt 300 passes through the workpiece 200 to be measured and is threadedly connected to the shaft head of the rotating shaft, and the head of the first bolt 300 abuts against the side of the workpiece 200 to be measured away from the rotating shaft, the workpiece 200 to be measured can be stably set on the shaft head of the rotating shaft by means of the first bolt 300, and then the rotating shaft can be used to achieve stable rotation on the equipment body 100.

[0059] Furthermore, since the clamping device 7 is clamped on the head of the first bolt 300, and the threaded portion of the second bolt 8 passes through the adapter plate 4 and is threadedly connected to the clamping device 7, the head of the second bolt 8 abuts against the side of the adapter plate 4 away from the workpiece 200 to be measured, so that the adapter plate 4 can be stably set on the clamping device 7 using the second bolt 8, thereby being stably set on the first bolt 300 using the clamping device 7, and then being stably set on the workpiece 200 to be measured using the first bolt 300.

[0060] Therefore, the adapter plate 4 can not only be stably arranged on the workpiece 200 to be measured by using the first bolt 300 connected between the workpiece 200 to be measured and the rotating shaft, but also is easy to disassemble and assemble, thereby making the use of the detection mechanism more flexible and convenient.

[0061] It should be noted that the first bolt 300 is a connecting piece in the equipment, which is not only used to connect the workpiece 200 to be measured and the rotating shaft, but the head can also be used to clamp the clamping device 7, so as to realize the installation of the adapter plate 4. The specific type of the first bolt 300 can be set according to actual needs and there is no limitation on this.

[0062] The clamping device 7 is used to clamp on the head of the first bolt 300 to stably set the adapter plate 4 on the side of the workpiece 200 to be measured away from the rotating shaft. The specific type of the clamping device 7 can be set according to actual needs and is not limited to this.

[0063] The second bolts 8 are used to fasten the adapter plate 4 to the clamping device 7. The specific type of the second bolts 8 can be set according to actual needs and is not limited to this.

[0064] Among them, the number of first bolts 300, clamping devices 7 and second bolts 8 corresponds one to one, and can be one, two, three, four, five, six, etc. For example: the number of first bolts 300 is five, and the five first bolts 300 are evenly spaced along the circumference of the workpiece 200 to be measured.

[0065] like Figure 1 and Figure 2 As shown, in some embodiments, the clamping device 7 further includes: a lock barrel 71 and a lock sleeve 72, the lock barrel 71 is located between the adapter plate 4 and the first bolt 300, one end of the lock sleeve 72 is movably arranged in the lock barrel 71, and the threaded portion of the second bolt 8 passes through the lock barrel 71 and is threadedly connected to the lock sleeve 72, and an elastic clamping opening is arranged at one end of the lock sleeve 72 away from the adapter plate 4, and the clamping opening is sleeved on the head of the second bolt 8. When the second bolt 8 rotates relative to the lock sleeve 72, the lock sleeve 72 moves axially to shrink the clamping opening and clamp the head of the second bolt 8, or to expand the clamping opening and release the head of the second bolt 8.

[0066] It can be understood that since one end of the locking sleeve 72 is movably arranged in the locking barrel 71, and the threaded portion of the second bolt 8 passes through the locking barrel 71 and is threadedly connected to the locking sleeve 72, the second bolt 8 can adjust the axial position of the locking sleeve 72 in the locking barrel 71 by rotating relative to the locking sleeve 72, and since an elastic clamping mouth is provided at the end of the locking sleeve 72 away from the adapter plate 4, and the clamping mouth is sleeved on the head of the second bolt 8, when the locking sleeve 72 moves in a direction approaching the adapter plate 4, the locking sleeve 72 can be gradually compressed by the locking barrel 71 to achieve contraction of the clamping mouth, and then the clamping device 7 is clamped on the head of the second bolt 8 by the contraction of the clamping mouth; when the locking sleeve 72 moves in a direction away from the adapter plate 4, the locking sleeve 72 can be gradually released by the locking barrel 71 to achieve expansion of the clamping mouth, and then the clamping device 7 is released on the head of the second bolt 8 by the expansion of the clamping mouth.

[0067] Therefore, the adapter plate 4, by means of the cooperation of the lock barrel 71, the lock sleeve 72 and the second bolt 8, can not only realize the stable setting on the side of the workpiece 200 to be tested away from the rotating shaft, but also is easy to assemble and disassemble, thereby making the use of the detection mechanism more flexible and convenient.

[0068] It should be noted that the locking barrel 71 is used to cooperate with the rotational contraction or expansion of the elastic clamping mouth of the second bolt 8, so as to utilize the contraction or expansion of the clamping mouth to realize the disassembly and assembly on the head of the first bolt 300. The specific type of the locking barrel 71 can be set according to actual needs and is not limited to this. For example, the locking barrel 71 is a barrel-shaped structure, and the opening of the locking barrel 71 faces the workpiece 200 to be measured. The bottom of the locking barrel 71 is provided with a through hole for the threaded portion of the second bolt 8 to pass through. When the clamping mouth is expanded, its diameter is larger than the inner diameter of the locking barrel 71.

[0069] The locking sleeve 72 is used to move axially relative to the locking barrel 71 according to the threaded rotation of the second bolt 8, and to use its own elasticity to enable the clamping mouth to contract and expand. The specific type of the locking sleeve 72 can be set according to actual needs and is not limited to this.

[0070] By screwing the second bolt 8 , the assembly and disassembly of the clamping device 7 on the head of the second bolt 8 and the assembly and disassembly of the adapter plate 4 on the clamping device 7 can be realized simultaneously.

[0071] like Figure 1As shown, in some embodiments, the lock sleeve 72 includes: a linkage seat 721 and a plurality of elastic strips 722, the linkage seat 721 is movably arranged in the lock barrel 71, and the threaded portion of the second bolt 8 penetrates the lock barrel 71 and is threadedly connected to the linkage seat 721, the elastic strip 722 is arranged at one end of the linkage seat 721 away from the adapter plate 4, and the plurality of elastic strips 722 are distributed at intervals along the circumference of the linkage seat 721, and the end of the elastic strip 722 away from the linkage seat 721 extends obliquely in a direction away from the central axis of the linkage seat 721, and the plurality of elastic strips 722 form a clamping opening. When the second bolt 8 rotates relative to the linkage seat 721, the linkage seat 721 moves axially to make the plurality of elastic strips 722 approach each other and shrink the clamping opening, or to make the plurality of elastic strips 722 move away from each other and expand the clamping opening.

[0072] It can be understood that, since the linkage seat 721 is movably arranged in the lock barrel 71, and the threaded portion of the second bolt 8 passes through the lock barrel 71 and is threadedly connected to the linkage seat 721, the second bolt 8 can adjust the axial position of the linkage seat 721 in the lock barrel 71 by rotating relative to the linkage seat 721, and since the plurality of elastic strips 722 are distributed at intervals along the circumference of the linkage seat 721, and the end of the elastic strip 722 away from the linkage seat 721 extends obliquely in a direction away from the central axis of the linkage seat 721, the plurality of elastic strips 722 form a tight grip. The mouth makes it possible for the linkage seat 721 to move in a direction close to the adapter plate 4, to utilize the gradual compression of the lock barrel 71 to realize the mutual approach of the plurality of elastic strips 722 and contraction of the clamping mouth, and then utilize the contraction of the clamping mouth to realize the clamping of the clamping device 7 on the head of the second bolt 8; when the linkage seat 721 moves in a direction away from the adapter plate 4, to utilize the gradual release of the lock barrel 71 to realize the mutual separation of the plurality of elastic strips 722 and expansion of the clamping mouth, and then utilize the expansion of the clamping mouth to realize the release of the clamping device 7 on the head of the second bolt 8.

[0073] It should be noted that the linkage seat 721 is used to carry multiple elastic strips 722 and to link with the second bolt 8. The specific type of the linkage seat 721 can be set according to actual needs and is not limited to this. For example, the linkage seat 721 can be a disc-shaped structure with a diameter smaller than the inner diameter of the lock barrel 71.

[0074] The elastic strip 722 is made of elastic material, and is used to realize the contraction or expansion of the clamping mouth under the pressure or release of the lock barrel 71. The specific type of the elastic strip 722 can be set according to actual needs and is not limited to this. For example, the elastic strip 722 can be a spring structure made of metal material.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, the adapter plate 4 is provided with at least one strip hole 9 , and the length direction of the strip hole 9 is located in the radial direction of the mounting rod 1 , and the threaded portion of the second bolt 8 passes through the strip hole 9 .

[0076] It can be understood that since the length direction of the strip hole 9 is located in the radial direction of the mounting rod 1, and the threaded portion of the second bolt 8 passes through the strip hole 9, the second bolt 8 can use the threaded portion passing through the strip hole 9 to stably fasten the adapter plate 4 to the clamping device 7, and can also use the radial movement of the threaded portion in the strip hole 9 to achieve position adjustment, thereby adapting to different positions of the first bolt 300, and thereby enabling the detection mechanism to achieve a stable installation arrangement in different devices, with strong versatility.

[0077] It should be noted that the strip hole 9 is used for the threaded portion of the second bolt 8 to penetrate, and the specific type of the strip hole 9 can be set according to actual needs and is not limited to this.

[0078] like Figure 1 and Figure 3 As shown, in some embodiments, the axial displacement detection mechanism further includes: a micro bearing 10, the inner ring of the micro bearing 10 is sleeved on the mounting rod 1, and the adapter seat 2 is sleeved on the outer ring of the micro bearing 10.

[0079] It can be understood that, since the inner ring of the micro bearing 10 is sleeved on the mounting rod 1, the inner ring of the micro bearing 10 can rotate synchronously with the mounting rod 1 and the workpiece 200 to be measured, and since the adapter 2 is sleeved on the outer ring of the micro bearing 10, the adapter 2 can achieve stillness in the rotation direction of the mounting rod 1 by utilizing the rotation between the inner ring and the outer ring of the micro bearing 10. Therefore, through the setting of the micro bearing 10, the adapter 2 can only follow the axial movement of the mounting rod 1, so that when the workpiece 200 to be measured has an axial displacement, the mounting rod 1 and the adapter 2 on the workpiece 200 to be measured move axially accordingly, thereby driving the rope of the rope displacement sensor 3 to retract and retract, and then using the rope displacement sensor 3 to achieve accurate detection of the axial displacement of the workpiece 200 to be measured.

[0080] It should be noted that the miniature bearing 10 is used for the rotation setting of the adapter 2 on the mounting rod 1. The specific type of the miniature bearing 10 can be set according to actual needs and is not limited to this. For example, the miniature bearing 10 can be a teardrop-shaped miniature bearing 10.

[0081] like Figure 3 As shown, in some embodiments, a boss 11 is provided at one end of the mounting rod 1 away from the workpiece 200 to be measured, and the diameter of the boss 11 is smaller than the diameter of the mounting rod 1, and the inner ring of the micro-bearing 10 is sleeved on the boss 11; the axial displacement detection mechanism also includes: a third bolt 12, the threaded portion of the third bolt 12 passes through the inner ring of the micro-bearing 10 and is threadedly connected to the boss 11, and the head of the third bolt 12 abuts against the inner ring of the micro-bearing 10, and makes the inner ring of the micro-bearing 10 abut against one end of the mounting rod 1 away from the workpiece 200 to be measured.

[0082] It can be understood that, since the inner ring of the micro-bearing 10 is sleeved on the boss 11, and the threaded portion of the third bolt 12 passes through the inner ring of the micro-bearing 10 and is threadedly connected to the boss 11, the head of the third bolt 12 abuts against the inner ring of the micro-bearing 10, so that the inner ring of the micro-bearing 10 can be stably set at the end of the mounting rod 1 away from the workpiece 200 to be measured by the tightening of the third bolt 12, and it is easy to disassemble and assemble.

[0083] It should be noted that the boss 11 is used for the sleeve of the inner ring of the micro-bearing 10, and when the head of the third bolt 12 abuts against the inner ring of the micro-bearing 10, the inner ring of the micro-bearing 10 and the end of the mounting rod 1 away from the workpiece 200 to be measured can be abutted. The specific type of the boss 11 can be set according to actual needs and is not limited to this. For example, an annular groove is circumferentially provided at the end of the mounting rod 1 away from the workpiece 200 to be measured, and the annular groove forms a coaxial boss 11 at the end of the mounting rod 1 away from the workpiece 200 to be measured.

[0084] The third bolt 12 is used to fasten the inner ring of the miniature bearing 10 to the end of the mounting rod 1 away from the workpiece 200 to be measured. The specific type of the third bolt 12 can be set according to actual needs and is not limited to this.

[0085] like Figure 3 As shown, in some embodiments, the axial displacement detection mechanism further includes: a gasket 13, which is sleeved on the threaded portion of the third bolt 12, and the gasket 13 abuts between the head of the third bolt 12 and the inner ring of the miniature bearing 10.

[0086] It can be understood that since the gasket 13 is sleeved on the threaded portion of the third bolt 12, and the gasket 13 abuts between the head of the third bolt 12 and the inner ring of the miniature bearing 10, the gasket 13 can be used to increase the contact area between the head of the third bolt 12 and the inner ring of the miniature bearing 10, which can not only improve the firmness of the inner ring of the miniature bearing 10 on the mounting rod 1, but also reduce the wear of the third bolt 12 and the inner ring of the miniature bearing 10.

[0087] It should be noted that the specific type of the gasket 13 can be set according to actual needs and is not limited to this.

[0088] like Figure 3As shown, in some embodiments, the adapter seat 2 includes: an adapter sleeve 21, a first clamping plate 22 and a second clamping plate 23. The adapter sleeve 21 is sleeved on the outer ring of the micro bearing 10, and the adapter sleeve 21 is connected to the pull rope of the pull rope displacement sensor 3. The first clamping plate 22 is arranged on the side of the adapter sleeve 21 close to the workpiece 200 to be measured, and the first clamping plate 22 and the side of the outer ring of the micro bearing 10 close to the workpiece 200 to be measured are abutted, the mounting rod 1 passes through the first clamping plate 22 and a gap is arranged between the mounting rod 1 and the first clamping plate 22, the second clamping plate 23 is arranged on the side of the adapter sleeve 21 away from the workpiece 200 to be measured, and the second clamping plate 23 and the side of the outer ring of the micro bearing 10 away from the workpiece 200 to be measured are abutted.

[0089] It can be understood that, since the first clamping plate 22 is arranged on the side of the adapter sleeve 21 close to the workpiece 200 to be measured, and the first clamping plate 22 and the side of the outer ring of the micro bearing 10 close to the workpiece 200 to be measured are in contact, the first clamping plate 22 can realize the constrained positioning between the side of the adapter sleeve 21 close to the workpiece 200 to be measured and the outer ring of the micro bearing 10; since the second clamping plate 23 is arranged on the side of the adapter sleeve 21 away from the workpiece 200 to be measured, and the second clamping plate 23 and the side of the outer ring of the micro bearing 10 away from the workpiece 200 to be measured are in contact, the second clamping plate can realize the constrained positioning between the side of the adapter sleeve 21 away from the workpiece 200 to be measured and the outer ring of the micro bearing 10. Therefore, through the cooperation of the first clamping plate 22 and the second clamping plate 23, the adapter sleeve 21 is stably mounted on the outer ring of the micro bearing 10, so that the pull rope can only follow the axial movement of the mounting rod 1 using the micro bearing 10, thereby ensuring the accurate detection of the axial displacement of the workpiece 200 to be measured by the pull rope displacement sensor 3.

[0090] It should be noted that the adapter sleeve 21 is used to be sleeved on the outer ring of the micro bearing 10 and connected to the pull rope of the pull rope displacement sensor 3. The specific type of the adapter sleeve 21 can be set according to actual needs and is not limited to this.

[0091] The first clamping plate 22 is used for constraining and positioning the adapter sleeve 21 between one side of the workpiece 200 to be measured and the outer ring of the miniature bearing 10. The specific type of the first clamping plate 22 can be set according to actual needs and is not limited to this. For example, the first clamping plate 22 is a ring plate structure, and the inner hole of the first clamping plate 22 is used to pass through the mounting rod 1 without contacting the mounting rod 1.

[0092] The second clamping plate 23 is used for constraining and positioning the adapter sleeve 21 away from the side of the workpiece 200 to be measured and the outer ring of the miniature bearing 10. The specific type of the second clamping plate 23 can be set according to actual needs and is not limited to this. For example, the second clamping plate 23 is a semi-annular plate structure, and the notch of the second clamping plate 23 is used to pass through the third bolt 12 without contacting the third bolt 12.

[0093] like Figure 1 and Figure 3 As shown, in some embodiments, the adapter 2 further includes: a fourth bolt 24, the threaded portion of the fourth bolt 24 passes through the second clamping plate 23 and is threadedly connected to the adapter sleeve 21, and the head of the fourth bolt 24 abuts against the second clamping plate 23. The end of the pull rope away from the device body 100 is located between the second clamping plate 23 and the adapter sleeve 21 and is wound around the threaded portion of the fourth bolt 24.

[0094] It can be understood that since the threaded portion of the fourth bolt 24 passes through the second clamping plate 23 and is threadedly connected to the adapter sleeve 21, and the head of the fourth bolt 24 abuts against the second clamping plate 23, the fourth bolt 24 can achieve a stable setting of the second clamping plate 23 on the adapter sleeve 21, while facilitating the disassembly and assembly of the second clamping plate 23 and the miniature bearing 10.

[0095] Furthermore, since the end of the pull rope away from the device body 100 is located between the second clamping plate 23 and the adapter sleeve 21 and is wrapped around the threaded portion of the fourth bolt 24, the fourth bolt 24 can simultaneously tighten and release the pull rope while tightening and releasing the second clamping plate 23, making the detection mechanism more convenient to use.

[0096] It should be noted that the fourth bolt 24 is used for installing the second clamping plate 23 on the adapter sleeve 21 and installing the pull rope on the adapter sleeve 21. The specific type of the fourth bolt 24 can be set according to actual needs and is not limited to this.

[0097] like Figure 2 As shown, in some embodiments, the preset angle is 90 degrees, and / or the pull-wire displacement sensor 3 is located above the adapter 2 .

[0098] It is understandable that the preset angle of 90 degrees and the location of the wire-drawing displacement sensor 3 above the adapter 2 can reduce interference factors detected by the wire-drawing displacement sensor 3 and improve the accuracy of the wire-drawing displacement sensor 3 on the axial displacement of the workpiece 200 to be measured.

[0099] It should be noted that, when the preset angle is 90 degrees and the pull-wire displacement sensor 3 is located above the adapter 2 , the pull wire of the pull-wire displacement sensor 3 should be in a vertical direction, that is, perpendicular to the ground.

[0100] The detection mechanism of this embodiment has the characteristics of high strength, high precision, small size, convenient installation, easy operation, low cost, high modality, and strong versatility.

[0101] like Figure 2As shown, the embodiment of the present disclosure also proposes a vehicle testing system, including: at least one axial displacement detection mechanism as in the embodiment of the present disclosure, a mounting rod 1 is arranged on the side of the wheel hub of the vehicle away from the axle, and the central axis of the mounting rod 1 coincides with the central axis of the wheel, a pull-rope displacement sensor 3 is arranged on the body of the vehicle, and the pull-rope displacement sensor 3 is used to detect the axial displacement of the wheel to obtain the suspension displacement data of the vehicle.

[0102] It can be understood that, since the mounting rod 1 is arranged on the side of the wheel hub of the vehicle away from the axle, and the central axis of the mounting rod 1 coincides with the central axis of the wheel, the mounting rod 1 can rotate synchronously with the wheel while avoiding radial displacement, and since the adapter 2 is rotatably arranged on the mounting rod 1, and the pull rope of the pull rope displacement sensor 3 is connected to the adapter 2, when the mounting rod 1 rotates synchronously with the wheel, the adapter 2 can remain stationary in the rotation direction of the mounting rod 1 and can only move axially with the mounting rod 1. Therefore, when the wheel has axial displacement, the mounting rod 1 and the adapter 2 on the wheel move axially accordingly, thereby driving the pull rope of the pull rope displacement sensor 3 to retract and retract, and then the pull rope displacement sensor 3 is used to detect the axial displacement of the wheel, and then the suspension displacement data is obtained.

[0103] Therefore, through the cooperation of the mounting rod 1, the adapter 2 and the pull-wire displacement sensor 3, not only the accurate detection of the axial displacement of the wheel is achieved, thereby meeting the research and development and testing needs of the vehicle, but also the space on the side of the wheel away from the axle is effectively utilized, and the installation layout of the detection mechanism is realized, and is not restricted by the space on the side of the wheel close to the axle, thereby reducing the difficulty of collecting the axial displacement and reducing the detection cost of the axial displacement.

[0104] It should be noted that the specific type of the vehicle testing system can be set according to actual needs and is not limited to this.

[0105] The vehicle can be a fuel vehicle, an electric vehicle, a hydrogen vehicle, a hybrid vehicle, etc.

[0106] The pull-wire displacement sensor 3 can be fixed on the fender of the vehicle by riveting, glue, plastic cement, etc.

[0107] The output end of the pull-wire displacement sensor 3 can be connected to the input end of a data collector, so as to use the data collector to obtain suspension displacement curves under various road surfaces.

[0108] The detection mechanism of this embodiment, with its ingenious structural design and connection form, combined with versatility and scalability, can not only fully meet the needs of the automotive industry for collecting suspension displacement data, but also be universally matched with various models. In addition, it can meet the bench testing of indoor vehicles in a non-driving state (such as four-post and 24-channel tests) and the data collection needs when the vehicle is in motion.

[0109] By using the detection mechanism of this embodiment, the Z-direction load of the suspension at the vehicle motor can be accurately obtained, providing strong support for product development, greatly reducing the testing cost, and filling the gap in the current related testing field.

[0110] In the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0111] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0113] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. An axial displacement detection mechanism, characterized in that: include: A mounting rod, the mounting rod being arranged on a side of the workpiece to be measured away from the rotating shaft, wherein the workpiece to be measured is rotatably arranged on the device body through the rotating shaft, and a central axis of the mounting rod coincides with a central axis of the workpiece to be measured; An adapter seat, the adapter seat is rotatably arranged on the mounting rod; A pull-wire displacement sensor, wherein the pull-wire displacement sensor is arranged on the equipment body, and the pull wire of the pull-wire displacement sensor is connected to the adapter, the pull wire of the pull-wire displacement sensor and the central axis of the mounting rod form a preset angle, and the pull-wire displacement sensor is used to detect the axial displacement of the workpiece to be measured.

2. The axial displacement detection mechanism according to claim 1, characterized in that: The axial displacement detection mechanism also includes: An adapter plate is arranged on a side of the workpiece to be measured away from the rotating shaft, and the mounting rod is arranged on the adapter plate.

3. The axial displacement detection mechanism according to claim 2, characterized in that: The mounting rod and the adapter plate are threadedly connected, and when the mounting rod rotates relative to the adapter plate, the mounting rod moves axially so that the pull rope of the pull rope displacement sensor and the central axis of the mounting rod form the preset angle.

4. The axial displacement detection mechanism according to claim 3, characterized in that: The axial displacement detection mechanism also includes: A first constraint nut, wherein the first constraint nut is threadedly sleeved on the mounting rod, and the first constraint nut abuts against a side of the adapter plate close to the workpiece to be measured; and / or A second constraint nut is threadably sleeved on the mounting rod, and the second constraint nut abuts against a side of the adapter plate away from the workpiece to be measured.

5. The axial displacement detection mechanism according to claim 2, characterized in that: The workpiece to be measured is arranged on the shaft head of the rotating shaft through at least one first bolt, and the threaded portion of the first bolt passes through the workpiece to be measured and is threadedly connected to the shaft head of the rotating shaft, and the head of the first bolt abuts against a side of the workpiece to be measured away from the rotating shaft; The axial displacement detection mechanism also includes: at least one clamping device and at least one second bolt, the clamping device is clamped on the head of the first bolt, the threaded portion of the second bolt passes through the adapter plate and is threadedly connected to the clamping device, and the head of the second bolt abuts against the side of the adapter plate away from the workpiece to be measured.

6. The axial displacement detection mechanism according to claim 5, characterized in that: The holding device also includes: A lock barrel, the lock barrel being located between the adapter plate and the first bolt; A locking sleeve, one end of which is movably arranged in the locking barrel, and the threaded portion of the second bolt passes through the locking barrel and is threadedly connected to the locking sleeve, and an elastic clamping opening is arranged at one end of the locking sleeve away from the adapter plate, and the clamping opening is sleeved on the head of the second bolt; When the second bolt rotates relative to the locking sleeve, the locking sleeve moves axially to cause the clamping opening to contract and clamp onto the head of the second bolt, or to cause the clamping opening to expand and release the head of the second bolt.

7. The axial displacement detection mechanism according to claim 6, characterized in that: The lock sleeve comprises: A linkage seat, wherein the linkage seat is movably disposed in the lock barrel, and a threaded portion of the second bolt passes through the lock barrel and is threadedly connected to the linkage seat; A plurality of elastic strips, wherein the elastic strips are arranged at one end of the linkage seat away from the adapter plate, and the plurality of elastic strips are distributed at intervals along the circumference of the linkage seat, and the end of the elastic strip away from the linkage seat extends obliquely in a direction away from the central axis of the linkage seat, and the plurality of elastic strips form the clamping opening; When the second bolt rotates relative to the linkage seat, the linkage seat moves axially to make the multiple elastic strips approach each other and shrink the clamping opening, or to make the multiple elastic strips move away from each other and expand the clamping opening.

8. The axial displacement detection mechanism according to claim 5, characterized in that: The adapter plate is provided with at least one strip-shaped hole, and the length direction of the strip-shaped hole is located in the radial direction of the mounting rod, and the threaded portion of the second bolt passes through the strip-shaped hole.

9. The axial displacement detection mechanism according to any one of claims 1 to 8, characterized in that: The axial displacement detection mechanism also includes: A miniature bearing, wherein the inner ring of the miniature bearing is sleeved on the mounting rod, and the adapter seat is sleeved on the outer ring of the miniature bearing.

10. The axial displacement detection mechanism according to claim 9, characterized in that: A boss is provided at one end of the mounting rod away from the workpiece to be measured, and the diameter of the boss is smaller than the diameter of the mounting rod, and the inner ring of the miniature bearing is sleeved on the boss; The axial displacement detection mechanism also includes: a third bolt, the threaded portion of the third bolt passes through the inner ring of the micro-bearing and is threadedly connected to the boss, and the head of the third bolt abuts against the inner ring of the micro-bearing, and the inner ring of the micro-bearing abuts against one end of the mounting rod away from the workpiece to be measured.

11. The axial displacement detection mechanism according to claim 10, characterized in that: The axial displacement detection mechanism also includes: A gasket is sleeved on the threaded portion of the third bolt, and the gasket abuts between the head of the third bolt and the inner ring of the miniature bearing.

12. The axial displacement detection mechanism according to claim 9, characterized in that: The adapter comprises: An adapter sleeve, wherein the adapter sleeve is sleeved on the outer ring of the miniature bearing and the adapter sleeve is connected to the drawstring of the drawstring displacement sensor; A first clamping plate, wherein the first clamping plate is arranged on a side of the adapter sleeve close to the workpiece to be measured, and the first clamping plate abuts against a side of the outer ring of the miniature bearing close to the workpiece to be measured, and the mounting rod passes through the first clamping plate and a gap is arranged between the mounting rod and the first clamping plate; The second clamping plate is arranged on a side of the adapter sleeve away from the workpiece to be measured, and the second clamping plate abuts against a side of the miniature bearing outer ring away from the workpiece to be measured.

13. The axial displacement detection mechanism according to claim 12, characterized in that: The adapter also includes: a fourth bolt, wherein the threaded portion of the fourth bolt passes through the second clamping plate and is threadably connected to the adapter sleeve, and the head of the fourth bolt abuts against the second clamping plate; Wherein, one end of the pull rope away from the equipment body is located between the second clamping plate and the adapter sleeve and is wound around the threaded portion of the fourth bolt.

14. The axial displacement detection mechanism according to claim 1, characterized in that: The preset angle is 90 degrees; and / or The pull-wire displacement sensor is located above the adapter.

15. A vehicle testing system, characterized in that: include: At least one axial displacement detection mechanism as described in any one of claims 1 to 14, wherein a mounting rod of the axial displacement detection mechanism is disposed on a side of the wheel hub of the vehicle away from the axle, and a central axis of the mounting rod coincides with a central axis of the wheel, and a pull-rope displacement sensor of the axial displacement detection mechanism is disposed on the body of the vehicle, and the pull-rope displacement sensor is used to detect the axial displacement of the wheel to obtain suspension displacement data of the vehicle.

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