Self-locking angle adjusting mechanism, linear moving device and radar test bench

Abstract

The utility model discloses a self-locking angle adjusting mechanism, a linear moving device and a radar test bench, and relates to the technical field of radars, the self-locking angle adjusting mechanism comprises an angle adjusting unit comprising a first angle adjusting block and a second angle adjusting block which can mutually rotate in a first direction; the transmission rod comprises a spiral groove; the matching block comprises a tooth row; and an erection unit, a linear displacement unit, a second driving unit and a movable obstacle unit. The beneficial effects of the utility model are that through the cooperation of the screw rod and the threaded sleeve and the cooperation of the gear and the rack, the high-precision positioning and movement of the detected radar probe core in the X, Y and Z axial directions and the obstacle in the X and Y axial directions are realized, and the stability of the position after the motor stops is ensured by utilizing the self-locking characteristic of the thread pair and the meshing of the gear and the rack; the design of the multiple sets of erection units supports simultaneous testing of multiple radar probe cores, and the testing efficiency and flexibility are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to radar technical field, especially a self -locking type angle adjusting mechanism, linear movement device and radar test bench. BACKGROUND

[0002] With the development of intelligent transportation system, radar technology is increasingly widely used in intelligent parking and obstacle detection fields. However, the existing radar equipment faces some challenges in actual use, especially in the angle adjustment of radar probe core. The conventional angle adjusting platform cannot be locked immediately after adjustment, and is prone to angle deviation due to external vibration and other factors, which affects the working performance and accuracy of the radar. In addition, in the existing radar test bench, whether it is the test bench where the radar probe core is located or the obstacle platform area where the obstacle is located, the same problem of not being able to be locked immediately exists when adjusting the position, which not only reduces the accuracy of the test, but also affects the test efficiency. Therefore, it is an urgent need to develop a self -locking type angle adjusting mechanism that can be locked immediately and ensure the stability of the angle and position, as well as the corresponding linear movement device and radar test bench. SUMMARY

[0003] In view of the above problems of the prior art, the utility model is proposed.

[0004] The utility model aims at providing a self -locking type angle adjusting mechanism, which aims at solving the problem that the existing radar probe core angle cannot be locked immediately after adjustment and is prone to deviation.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a self -locking type angle adjusting mechanism, which comprises an angle adjusting unit, comprising a first angle adjusting block and a second angle adjusting block that can rotate relative to each other in a first direction;

[0006] A transmission rod is rotatably arranged on one side of the first angle adjusting block, comprising a helical groove arranged on one side of the transmission rod; and,

[0007] A matching block is fixedly arranged on one side of the second angle adjusting block, comprising a toothed array engaged with the helical groove.

[0008] As a preferred scheme of the self -locking type angle adjusting mechanism of the utility model, the angle adjusting unit further comprises a third angle adjusting block that rotates relative to the second angle adjusting block in a second direction perpendicular to the first direction.

[0009] As a preferred scheme of the self -locking type angle adjusting mechanism of the utility model, the transmission rod is provided with two groups, one group of transmission rod is rotatably arranged on one side of the first angle adjusting block along the Y axis, and the helical groove is arranged along the Y axis;The other group of transmission rod is rotatably arranged on one side of the second angle adjusting block along the Z axis, and the helical groove is arranged along the Z axis.

[0010] As a preferred scheme of the self-locking type angle adjusting mechanism, two sets of the matching blocks are arranged corresponding to the two sets of transmission rods, one set of the matching blocks is fixedly arranged on one side of the second angle adjusting block, and the tooth rows are arranged along the first direction; the other set of the matching blocks is fixedly arranged on one side of the third angle adjusting block, and the tooth rows are arranged along the second direction.

[0011] As a preferred scheme of the self-locking type angle adjusting mechanism, the first driving unit is further included, two sets of the first motors are arranged corresponding to the two sets of transmission rods, and two sets of the transmission sleeves are respectively sleeved on the shaft ends of the two sets of first motors; the two sets of transmission sleeves are simultaneously and respectively sleeved on one end of the two sets of transmission rods.

[0012] As a preferred scheme of the self-locking type angle adjusting mechanism, the first support fixedly connected with one of the first motors and the first angle adjusting block, the second support fixedly arranged on one side of the third angle adjusting block, and the radar probe core fixedly installed on the second support are further included.

[0013] The self-locking type angle adjusting mechanism has the following beneficial effects: by adjusting the setting direction of the transmission rod and the arrangement direction of the tooth rows, the pitch angle and the yaw angle of the radar probe core on the longitudinal plane (X-Z plane) and the horizontal plane (X-Y plane) can be respectively adjusted and realized; by the meshing transmission and self-locking function between the spiral groove on the transmission rod and the tooth rows on the matching block, smooth and stable adjustment during the angle adjustment process is ensured, and the radar probe core can be firmly locked at the required angle position after the adjustment is stopped, so that the accurate angle adjustment of the radar probe core in different directions is realized, and the environmental perception ability and the precision of the radar in intelligent parking and obstacle detection are improved.

[0014] Another object of the present application is to provide a self-locking type linear movement device, which aims to solve the problem that the existing test bench for erecting a radar probe core and an angle adjusting platform cannot be instantaneously locked when the position is adjusted on the X, Y and Z three axial directions, and is prone to cause position deviation.

[0015] To solve the above technical problems, the present application further provides the following technical scheme: a self-locking type linear movement device, which comprises a self-locking type angle adjusting mechanism; and an erecting unit arranged on one side of the first support, comprising a first sliding rail arranged along the Y axis, at least two sets of second sliding rails arranged along the Z axis, a third sliding rail arranged along the X axis and fixedly connected with one side of the first support, and a sliding support one side of which is slidably connected with one side of the first sliding rail; one side of the sliding support is fixedly connected with one side of the second sliding rail; and

[0016] The linear displacement unit comprises at least two groups of first lead screws arranged along the Z axis and rotationally connected with the sliding support, at least two groups of first threaded transmission sleeves correspondingly sleeved on the two groups of first lead screws, a second lead screw arranged along the X axis and rotationally connected with one side of one group of first threaded transmission sleeves, and a second threaded transmission sleeve sleeved on the second lead screw.

[0017] As a preferred scheme of the self-locking linear moving device, the second driving unit comprises at least two groups of second motors with shaft ends correspondingly fixedly connected with one end of the two groups of first lead screws, and a third motor with one side fixedly connected with one side of one group of first threaded transmission sleeves; a shaft end of the third motor is fixedly connected with one end of the second lead screw.

[0018] As a preferred scheme of the self-locking linear moving device, the linear displacement unit further comprises a rack arranged along the Y axis and arranged on one side of the first sliding rail, and a gear meshingly connected with one side of the rack.

[0019] The second driving unit further comprises a fourth motor with a shaft end fixedly connected with a middle part of the gear.

[0020] The self-locking linear moving device has the advantages that through the cooperation of the lead screw and the threaded sleeve and the cooperation of the gear and the rack, high-precision positioning and movement of the measured radar probe core in the X, Y and Z axial directions are realized; the self-locking characteristic of the threaded pair and the meshing of the gear and the rack ensure the stability of the position after the motor is stopped; the design of the multiple erecting units supports the simultaneous testing of multiple radar probe cores, and the testing efficiency and flexibility are improved.

[0021] Another object of the present application is to provide a radar test bench, which aims to solve the problem that the existing obstacle moving table cannot be locked in time after position adjustment and is prone to position deviation.

[0022] To solve the above technical problems, the present application further provides the following technical scheme: a radar test bench comprising a self-locking linear moving device; and a movable obstacle unit arranged on one side of the first sliding rail, comprising a fourth sliding rail arranged along the X axis, a first sliding head slidingly connected with the fourth sliding rail, a fifth sliding rail arranged along the Y axis and fixedly connected with one side of the first sliding head, a second sliding head fixedly connected with one side of the fifth sliding rail, an auxiliary guide rail slidingly connected with the second sliding head, a third sliding head slidingly connected with the fifth sliding rail, and an obstacle placing platform fixedly connected with one side of the third sliding head.

[0023] The radar test bench has the advantages that through the cooperation of the gear and the rack, the position of the obstacle in the X and Y axial directions can be realized, and the obstacle can be controlled to move away from or approach the erecting unit. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0025] Figure 1 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0026] Figure 2 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0027] Figure 3 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0028] Figure 4 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0029] Figure 5 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0030] Figure 6 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0031] Figure 7 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0032] Figure 8 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0033] Figure 9 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0034] Figure 10 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0035] Figure 11 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0036] Figure 12 The first or second embodiment of the self-locking angle adjusting mechanism in the present application is partially viewed.

[0037] Figure 13 It is the overall three-dimensional view of the radar test bench in the utility model.

[0038] Figure 14 It is the specific structure schematic view of the movable obstacle unit in the radar test bench in the utility model.

[0039] Figure 15 It is the O-1 partial enlarged view of the radar test bench in the utility model.

[0040] Figure 16 It is the O-2 partial enlarged view of the radar test bench in the utility model.

[0041] Figure 17 It is the O-3 partial enlarged view of the radar test bench in the utility model. DETAILED DESCRIPTION

[0042] In order to make the above objectives, characteristics and advantages of the utility model more apparent and comprehensible, the specific implementation manners of the utility model will be described in detail below with reference to the drawings in the specification.

[0043] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description, and the person skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific implementation examples disclosed below.

[0044] Secondly, the "one embodiment" or "embodiment" referred to here means that the specific features, structures or characteristics can be included in at least one implementation manner of the utility model. In this specification, "in one embodiment" does not mean the same embodiment, nor does it mean that the embodiment is separate or selectively excluded from other embodiments.

[0045] Embodiment 1

[0046] Reference Figures 1-4 For the first embodiment of the utility model, the embodiment provides a self-locking angle adjusting mechanism, which comprises an angle adjusting unit 300, a transmission rod 100 and a matching block 200.

[0047] Specifically, the angle adjusting unit 300 comprises a first angle adjusting block 301 and a second angle adjusting block 302 which can rotate to each other in a first direction;

[0048] The transmission rod 100 rotatably arranged on one side of the first angle adjusting block 301 comprises a spiral groove 101 arranged on one side of the transmission rod 100; and

[0049] The matching block 200 fixedly arranged on one side of the second angle adjusting block 302 comprises a toothed array 201 engaged with the spiral groove 101.

[0050] It should be noted that the self-locking angle adjusting mechanism in the embodiment is actually a mechanism for adjusting the pitch angle and the yaw angle of the measured radar probe when simulating the test of the ultrasonic radar for parking space and obstacle detection. The pitch angle adjustment allows the radar probe to adjust the angle in the longitudinal plane (X-Z plane), so that obstacles at different heights can be detected. For example, in intelligent parking, the radar needs to detect the ground parking space markers, curbs, and higher obstacles (such as other vehicles, road signs, etc.). The yaw angle adjustment allows the radar probe to adjust the angle in the horizontal plane (X-Y plane), so as to expand the horizontal scanning range of the radar and ensure that obstacles in different directions can be detected, thereby realizing omnidirectional environmental perception.

[0051] It should be noted that the two groups of angle adjusting blocks in the embodiment can rotate relative to each other. The contact surfaces of the two groups of angle adjusting blocks are arc-shaped, which ensures smooth and stable rotation. The toothed array 201 is arranged in an orderly manner along the arc-shaped surface with the same curvature. The first angle adjusting block 301 is provided with a convex arc-shaped clamping block N, and the second angle adjusting block 302 is provided with a concave arc-shaped sliding groove M. The two are matched with each other and can be rotated and clamped together in the horizontal plane (X-Y plane) or the longitudinal plane (X-Z plane), depending on the placement direction of the two groups of adjusting blocks.

[0052] When the two groups of adjusting blocks rotate relative to each other in the horizontal plane (X-Y plane), the clamping block N and the sliding groove M form a limit on the Z-axis relative to each other, so that the two groups of adjusting blocks will not be separated from each other in the Z-axis direction due to their own gravity.

[0053] When the two groups of adjusting blocks rotate relative to each other in the longitudinal plane (X-Z plane), the two groups of adjusting blocks are limited relative to each other through the close engagement self-locking relationship between the spiral groove 101 and the toothed array 201, so that the two groups of adjusting blocks will not be separated from each other in the Z-axis direction due to their own gravity.

[0054] Preferably, the self-locking angle adjusting mechanism in the embodiment has three implementation modes. The first implementation mode is to use the self-locking angle adjusting mechanism alone to adjust the pitch angle of the measured radar. The first direction is the longitudinal plane (X-Z plane) direction. The second implementation mode is to use the self-locking angle adjusting mechanism alone to adjust the yaw angle of the measured radar. The first direction is the horizontal plane (X-Y plane) direction. The third implementation mode is to theoretically arrange two groups of self-locking angle adjusting mechanisms, which are respectively used to adjust the pitch angle and the yaw angle of the same measured radar. No matter which implementation mode is used, the transmission rod 100 provided with the spiral groove 101 and the matching block 200 provided with the toothed array 201 can be engaged and driven, and can be engaged and self-locked when the driving is stopped.

[0055] In use,

[0056] In the first embodiment, the first direction is the longitudinal plane (X-Z plane) direction, the first angle adjustment block 301 and the second angle adjustment block 302 rotate with respect to each other in the longitudinal plane (X-Z plane), the transmission rod 100 is movably mounted on one side of the first angle adjustment block 301, the transmission rod 100 can rotate independently with respect to the first angle adjustment block 301, the transmission rod 100 is arranged perpendicular to the horizontal plane (X-Y plane), and the helical groove 101 on the transmission rod 100 is arranged in the Z-axis direction; the matching block 200 is fixed on one side of the second angle adjustment block 302, the tooth array 201 on the matching block 200 is arranged in an arc shape in the Z-axis direction, and the tooth array 201 is in meshing connection with the helical groove 101 of the transmission rod 100.

[0057] When the pitch angle is adjusted: the first angle adjustment block 301 is kept stationary by an external force, the transmission rod 100 is driven to rotate around the Z-axis in a fixed direction, the helical groove 101 initially contacts the teeth of the tooth array 201, the transmission rod 100 continues to rotate in the same direction, the helical groove 101 gradually pushes the teeth of the tooth array 201, the helical groove 101 is completely in meshing transmission with the teeth of the tooth array 201, the tooth array 201 and the matching block 200 start to be passively rotated in the opposite direction, the second angle adjustment block 302 is caused to be angularly deflected with respect to the first angle adjustment block 301 in the longitudinal plane (X-Z plane) and correspondingly displaced, so that the pitch angle adjustment of the measured radar probe core is realized.

[0058] After the rotation of the transmission rod 100 is stopped, the self-locking effect can be realized due to the close meshing between the helical groove 101 and the tooth array 201, so that the measured radar probe core is kept stationary at the required pitch angle, and the close meshing between the helical groove 101 and the tooth array 201 can stably link the two groups of adjustment blocks together as a whole.

[0059] In the second embodiment, the first direction is the horizontal plane (X-Y plane) direction, the first angle adjustment block 301 and the second angle adjustment block 302 rotate with respect to each other in the horizontal plane (X-Y plane), the transmission rod 100 is movably mounted on one side of the first angle adjustment block 301, the transmission rod 100 can rotate independently with respect to the first angle adjustment block 301, the transmission rod 100 is arranged parallel to the horizontal plane (X-Y plane), and the helical groove 101 on the transmission rod 100 is arranged in the Y-axis direction; the matching block 200 is fixed on one side of the second angle adjustment block 302, the tooth array 201 on the matching block 200 is arranged in an arc shape in the Y-axis direction, and the tooth array 201 is in meshing connection with the helical groove 101 of the transmission rod 100.

[0060] When the yaw angle is adjusted: the first angle adjusting block 301 is kept stationary by external force, the transmission rod 100 is driven to rotate along a fixed direction around the Y axis by external force, the spiral groove 101 is initially in contact with the teeth of the tooth array 201, the transmission rod 100 continues to rotate in the same direction, the spiral groove 101 gradually pushes the teeth of the tooth array 201, the spiral groove 101 is completely meshed with the teeth of the tooth array 201 to drive the tooth array 201 and the matching block 200 to rotate reversely, the second angle adjusting block 302 is deflected and displaced relative to the first angle adjusting block 301 in the horizontal plane (X-Y plane), so that the yaw angle of the measured radar probe is adjusted.

[0061] After the rotation of the transmission rod 100 is stopped, the self-locking effect is achieved due to the close meshing between the spiral groove 101 and the tooth array 201, so that the measured radar probe is kept stationary at the required yaw angle.

[0062] In the third embodiment, the structure in the first embodiment and the structure in the second embodiment are combined to respectively adjust the pitch angle and the yaw angle of the measured radar probe.

[0063] In summary, by adjusting the arrangement direction of the transmission rod and the arrangement direction of the tooth array, the pitch angle and the yaw angle of the radar probe in the longitudinal plane (X-Z plane) and the horizontal plane (X-Y plane) can be respectively adjusted, the meshing transmission and the self-locking function between the spiral groove on the transmission rod and the tooth array on the matching block ensure smooth and stable adjustment during the angle adjustment, and the required angle position can be firmly locked after the adjustment is stopped, so that the accurate angle adjustment of the radar probe in different directions is realized, and the environmental perception ability and the accuracy of the radar in intelligent parking and obstacle detection are improved.

[0064] Embodiment 2

[0065] Reference Figures 1-7 The third embodiment of the angle adjusting unit 300, the transmission rod 100 and the matching block 200 is the second embodiment of the utility model, and the first driving unit 400 is specifically presented.

[0066] Specifically, the angle adjusting unit 300 further comprises a third angle adjusting block 303 which is rotatable with the second angle adjusting block 302 in a second direction perpendicular to the first direction.

[0067] It should be noted that, based on the specific implementation scheme of the third embodiment of embodiment 1, the first direction specifically refers to the horizontal plane (X-Y plane), the second direction specifically refers to the longitudinal plane (X-Z plane), and the third angle adjusting block 303 is connected with the second angle adjusting block 302 through the close meshing and self-locking relationship between the spiral groove 101 and the tooth array 201.

[0068] Further, the transmission rod 100 is provided with two groups, one group of transmission rod 100 is arranged on one side of the first angle adjusting block 301 along the Y axis, and the spiral groove 101 is arranged along the Y axis; another group of transmission rod 100 is arranged on one side of the second angle adjusting block 302 along the Z axis, and the spiral groove 101 is arranged along the Z axis.

[0069] Further, the matching block 200 is provided with two groups corresponding to the two groups of transmission rod 100, one group of matching block 200 is fixedly arranged on one side of the second angle adjusting block 302, and the tooth array 201 is arranged along the first direction; another group of matching block 200 is fixedly arranged on one side of the third angle adjusting block 303, and the tooth array 201 is arranged along the second direction.

[0070] Further, it also includes a first driving unit 400, including two groups of first motors 401 corresponding to two groups of transmission rods 100, and two groups of transmission sleeves 402 respectively sleeved on the shaft ends of the two groups of first motors 401; the two groups of transmission sleeves 402 are simultaneously respectively sleeved on one end of the two groups of transmission rods 100.

[0071] It should be noted that each group of transmission sleeve 402 is simultaneously sleeved on the shaft end of one group of first motor 401 and one end of one group of transmission rod 100, and a pin is driven from the outside of the transmission sleeve 402 to penetrate the transmission rod 100, so that the first motor 401 can drive the transmission rod 100 to rotate, and the transmission sleeve 402 can also be manually rotated to drive the transmission rod 100 to rotate when there is no motor.

[0072] Further, it also includes a first support A fixedly connected with one of the first motors 401 and the first angle adjusting block 301, a second support B fixedly arranged on one side of the third angle adjusting block 303, and a radar probe C fixedly installed on the second support B.

[0073] In use,

[0074] When the yaw angle is adjusted: the first motor 401 fixedly connected with the first angle adjusting block 301 on the first support A is driven to drive the transmission rod 100 arranged on one side of the first angle adjusting block 301 along the Y axis to rotate in a fixed direction, the helical groove 101 arranged along the Y axis on the transmission rod 100 and the tooth array 201 arranged in an arc shape along the first direction (the horizontal plane (X-Y plane)) are in meshing transmission, the cooperating block 200 and the second angle adjusting block 302 fixedly connected therewith are driven to rotate in the horizontal plane (X-Y plane) to produce angular deflection, and since the other set of first motor 401, the other set of transmission sleeve 402, the transmission rod 100 arranged on one side of the second angle adjusting block 302 along the Z axis, the third angle adjusting block 303, the other set of cooperating block 200, the second support B and the radar probe core C are connected with the second angle adjusting block 302 by the meshing self-locking relationship of the helical groove 101 arranged along the Z axis and the tooth array 201 arranged in an arc shape along the second direction (the longitudinal plane (X-Z plane)), when the second angle adjusting block 302 rotates in the horizontal plane (X-Y plane) to produce angular deflection, the other set of first motor 401, the other set of transmission sleeve 402, the transmission rod 100 arranged on one side of the second angle adjusting block 302 along the Z axis, the third angle adjusting block 303, the other set of cooperating block 200, the second support B and the radar probe core C are simultaneously and synchronously deflected in the same direction as a whole;

[0075] When the yaw angle is adjusted: the first motor 401 fixedly connected with the first angle adjusting block 301 on the first support A is driven to drive the transmission rod 100 arranged on one side of the first angle adjusting block 301 along the Y axis to rotate in a fixed direction, the helical groove 101 arranged along the Y axis on the transmission rod 100 and the tooth array 201 arranged in an arc shape along the first direction (the horizontal plane (X-Y plane)) are in meshing transmission, the cooperating block 200 and the second angle adjusting block 302 fixedly connected therewith are driven to rotate in the horizontal plane (X-Y plane) to produce angular deflection, and since the other set of first motor 401, the other set of transmission sleeve 402, the transmission rod 100 arranged on one side of the second angle adjusting block 302 along the Z axis, the third angle adjusting block 303, the other set of cooperating block 200, the second support B and the radar probe core C are connected with the second angle adjusting block 302 by the meshing self-locking relationship of the helical groove 101 arranged along the Z axis and the tooth array 201 arranged in an arc shape along the second direction (the longitudinal plane (X-Z plane)), when the second angle adjusting block 302 rotates in the horizontal plane (X-Y plane) to produce angular deflection, the other set of first motor 401, the other set of transmission sleeve 402, the transmission rod 100 arranged on one side of the second angle adjusting block 302 along the Z axis, the third angle adjusting block 303, the other set of cooperating block 200, the second support B and the radar probe core C are simultaneously and synchronously deflected in the same direction as a whole;

[0076] When the yaw angle is adjusted: the first motor 401 fixedly connected with the first angle adjusting block 301 on the first support A is driven to drive the transmission rod 100 arranged on one side of the first angle adjusting block 301 along the Y axis to rotate in a fixed direction, the helical groove 101 arranged along the Y axis on the transmission rod 100 and the tooth array 201 arranged in an arc shape along the first direction (the horizontal plane (X-Y plane)) are in meshing transmission, the cooperating block 200 and the second angle adjusting block 302 fixedly connected therewith are driven to rotate in the horizontal plane (X-Y plane) to produce angular deflection, and since the other set of first motor 401, the other set of transmission sleeve 402, the transmission rod 100 arranged on one side of the second angle adjusting block 302 along the Z axis, the third angle adjusting block 303, the other set of cooperating block 200, the second support B and the radar probe core C are connected with the second angle adjusting block 302 by the meshing self-locking relationship of the helical groove 101 arranged along the Z axis and the tooth array 201 arranged in an arc shape along the second direction (the longitudinal plane (X-Z plane)), when the second angle adjusting block 302 rotates in the horizontal plane (X-Y plane) to produce angular deflection, the other set of first motor 401, the other set of transmission sleeve 402, the transmission rod 100 arranged on one side of the second angle adjusting block 302 along the Z axis, the third angle adjusting block 303, the other set of cooperating block 200, the second support B and the radar probe core C are simultaneously and synchronously deflected in the same direction as a whole;

[0077] Stop driving and rotating the first motor 401 connected to the transmission rod 100 on one side of the second angle adjusting block 302 along the Z axis, and the helical groove 101 arranged along the Z axis and the tooth array 201 arranged in an arc shape along the second direction (the longitudinal plane (X-Z plane)) are engaged and self-locked, so as to realize the adjustment of the pitch angle of the measured radar.

[0078] To sum up, the utility model utilizes two sets of first motors to control two groups of transmission rods, so that the first group of transmission rods rotates around the Y axis, and then drives the second angle adjusting block to rotate in the horizontal direction (the X-Y plane), so as to adjust the yaw angle; the second group of transmission rods rotates around the Z axis, drives the third angle adjusting block to rotate in the vertical direction (the X-Z plane), so as to adjust the pitch angle, and in this process, the engagement transmission and self-locking function of the helical groove and the tooth array ensure the precise adjustment and stable adjustment of the angle, and after the adjustment is completed, the angle can be stably locked at the specified angle, which greatly improves the environmental perception performance and accuracy of the radar in the intelligent parking and obstacle recognition applications.

[0079] Embodiment 3

[0080] Reference Figures 8-12 For the third embodiment of the utility model, the embodiment further provides a self-locking linear moving device. It further comprises a mounting unit 500, a linear displacement unit 600 and a second driving unit 700.

[0081] Specifically, the mounting unit 500 arranged on one side of the first support A comprises a first sliding rail 501 arranged along the Y axis, at least two groups of second sliding rails 502 arranged along the Z axis, a third sliding rail 503 arranged along the X axis and fixedly connected to one side of the first support A, and a sliding support 504 slidably connected to one side of the first sliding rail 501; one side of the sliding support 504 is fixedly connected to one side of the second sliding rail 502; and,

[0082] The linear displacement unit 600 comprises at least two groups of first lead screws 601 arranged along the Z axis and rotationally connected to the sliding support 504, at least two groups of first threaded transmission sleeves 602 corresponding to the two groups of first lead screws 601, a second lead screw 603 arranged along the X axis and rotationally connected to one side of one group of first threaded transmission sleeves 602, and a second threaded transmission sleeve 604 sleeved on the second lead screw 603.

[0083] Further, the second driving unit 700 comprises at least two groups of second motors 701 with one end of each group of first lead screws 601 fixedly connected to the corresponding shaft end, and a third motor 702 with one side fixedly connected to one side of one group of first threaded transmission sleeves 602; the shaft end of the third motor 702 is fixedly connected to one end of the second lead screw 603.

[0084] Further, the linear displacement unit 600 further comprises a rack 605 arranged along the Y axis and arranged on one side of the first slide rail 501, and a gear 606 meshingly connected with one side of the rack 605;

[0085] The second driving unit 700 further comprises a fourth motor 703 with the shaft end fixedly connected with the middle part of the gear 606.

[0086] It should be noted that the first support A and the third slide rail 503 can be directly fixedly connected or fixedly connected through a connecting plate, no matter which fixed connection mode is adopted, it is necessary to ensure that the first support A and the third slide rail 503 as a whole can be reciprocally linearly moved along the X axis by a fixed distance on one side of the second slide rail 502 in the same group, and the third slide rail 503 is symmetrically arranged in two groups, which is more stable, and the third slide rail 503 is symmetrically arranged on one side of the second lead screw 603.

[0087] The independent rotation direction between the two groups of first lead screws 601 and the sliding support 504 is around the Z axis, and the rotation connection enables the two groups of first lead screws 601 to linearly move along the Y axis and the X axis direction following the sliding support 504; the other end of the two groups of first lead screws 601 is limited by the two groups of second motors 701 fixedly connected therewith, and the two groups of second slide rails 502 fixedly connected with the two groups of second motors 701, so that the two groups of first lead screws 601 cannot linearly move upward on the Z axis to be separated from the sliding support 504, and the two groups of second motors 701 are symmetrically fixedly arranged with the two groups of third slide rails 503 on one side, and the two groups of third slide rails 503 are fixedly connected with the two groups of second slide rails 502 at the same time, so as to maintain the stability of the whole erecting unit, so that the first lead screw 601 can independently rotate relative to the sliding support 504, and the sliding support 504 cannot independently rotate relative to the first lead screw 601, and the two groups of third slide rails 503 arranged on both sides of the second lead screw 603 drive the support A and the self-locking angle adjusting mechanism on one side of the support A to linearly move reciprocally along the X axis, so as to realize the adjustment of the measured radar probe core in the X axis direction position;

[0088] The independent rotation direction between one end of the second screw rod 603 and one set of the first threaded transmission sleeve 602 is around the X-axis. The rotation connection allows the second screw rod 603 to linearly move along the Y-axis and the Z-axis direction following the first threaded transmission sleeve 602. Since the other end of the second screw rod 603 and the other set of the first threaded transmission sleeve 602 are simultaneously fixedly connected by the third motor 702, both sets of the first threaded transmission sleeve 602 cannot rotate around the Z-axis. Since the two sets of the first threaded transmission sleeve 602 and the two sets of the first screw rod 601 are respectively threadedly connected, both sets of the first threaded transmission sleeve 602 cannot rotate around the X-axis and the Y-axis. Therefore, when the two sets of the first screw rod 601 rotate around the Z-axis, both sets of the first threaded transmission sleeve 602 can only linearly move along the Z-axis. When only the second screw rod 603 rotates, both sets of the first threaded transmission sleeve 602 are fixed and their movement directions are synchronous and same.

[0089] The two sets of the third sliding rails 503 arranged on both sides of the second screw rod 603 are simultaneously fixedly connected with both sides of the second threaded transmission sleeve 604. The second threaded transmission sleeve 604 is threadedly connected with the second screw rod 603. The two sets of the third sliding rails 503 are slidingly connected with both sides of the set of the first threaded transmission sleeve 602 rotatably connected to one end of the second screw rod 603. Thus, the two sets of the third sliding rails 503 are limited by both sides of the set of the first threaded transmission sleeve 602 and cannot rotate around the X-axis. The second threaded transmission sleeve 604 also cannot rotate around the X-axis. Therefore, when the second screw rod 603 rotates, the second threaded transmission sleeve 604 and the two sets of the third sliding rails 503 arranged on both sides of the second screw rod 603 can only reciprocatingly linearly move in the X-axis direction, and drive the bracket A and the self-locking angle adjusting mechanism on one side of the bracket A to reciprocatingly linearly move in the X-axis direction.

[0090] The shell of the fourth motor 703 is fixedly connected with the sliding support 504. The shaft end of the fourth motor 703 is fixedly connected with the gear 606. One side of the rack 605 meshingly connected with the gear 606 is fixed to the ground. Thus, when the fourth motor 703 drives the gear 606 to rotate, the teeth of the gear 606 begin to mesh with the teeth of the rack 605. Since the rack 605 is fixed, the teeth of the gear 606 cannot idle in place, but are pushed by the teeth of the rack 605 to move along the direction of the rack 605. The gear 606 reciprocatingly linearly moves along the Y-axis on the rack 605. The fourth motor 703 reciprocatingly linearly moves along the Y-axis following the gear 606, drives the sliding support 504 to reciprocatingly linearly move along the first sliding rail 501, and drives the second sliding rail 502, the third sliding rail 503, the first screw rod 601, the first threaded transmission sleeve 602, the second screw rod 603, the second threaded transmission sleeve 604, the second motor 701, the third motor 702, and the self-locking angle adjusting mechanism to reciprocatingly linearly move along the first sliding rail 501 following the sliding support 504.

[0091] Preferably, the erecting units 500 are arranged in at least one group along the slide rails 501 on the Y axis. Multiple groups of erecting units 500 can enable multiple radar probe cores under test to be tested simultaneously, improving testing efficiency and flexibility, while each erecting unit 500 can be independently controlled to enable different radar probe cores to move freely in the X, Y, and Z axial directions, thereby simulating various complex test scenarios and ensuring the comprehensiveness and accuracy of test results. In addition, by increasing or decreasing the number of erecting units 500, the testing scale can be flexibly adjusted according to actual testing needs.

[0092] In use,

[0093] Position adjustment of the radar probe core under test in the X axial direction: drive the third motor 702 to rotate in a fixed direction, and the second lead screw 603 rotates synchronously and in the same direction by the same angle. Since the second screw transmission sleeve 604 and the third slide rails 503 on both sides thereof are limited by the first screw transmission sleeve 602 and cannot rotate with the second lead screw 603, the second screw transmission sleeve 604 and the two sets of third slide rails 503 as a whole linearly move left on the second lead screw 603 under the power of the rotating trend. Since one end of the two sets of third slide rails 503 is fixedly connected to the support A through the connecting plate, the support A and the self-locking angle adjustment mechanism on one side thereof as a whole synchronously and in the same direction move left with the third slide rails 503. Stop driving the third motor 702 to rotate, and the second lead screw 603 synchronously stops rotating. The second screw transmission sleeve 604, the third slide rails 503, the support A, and the self-locking angle adjustment mechanism as a whole synchronously stop moving left. Through the thread engagement of the second screw transmission sleeve 604 and the second lead screw 603, the structure is self-locked to keep the current position fixed. Reverse drive the third motor 702 to rotate, and the second lead screw 603 synchronously rotates in the same direction. The second screw transmission sleeve 604, the third slide rails 503, the support A, and the self-locking angle adjustment mechanism as a whole synchronously move right.

[0094] The position adjustment of the measured radar probe and the structure driving the measured radar probe to move left and right along the X-axis in the Z-axis direction: synchronously and in the same direction, drive two groups of second motors 701 to rotate by the same angle along a fixed direction, and synchronously and in the same direction, two groups of first lead screws 601 follow the corresponding connection of the second motors 701 to rotate by the same angle, because one side of one group of first threaded transmission sleeves 602 is fixedly connected with one side of the third motor 702, and the other side of the one group of first threaded transmission sleeves 602 is rotatably connected with one side of the second lead screw 603 along the X-axis, therefore, the two groups of first threaded transmission sleeves 602 are limited and cannot follow the first lead screws 601 to synchronously and in the same direction rotate, but the two groups of first threaded transmission sleeves 602 are linearly upward moved on the two groups of first lead screws 601 under the power of the rotating trend, and the third motor 702, the second lead screw 603, the second threaded transmission sleeve 604, the third sliding rail 503, the bracket A and the self-locking angle adjustment mechanism are linearly upward moved as a whole with the two groups of first threaded transmission sleeves 602; at the same time, stop driving the two groups of second motors 701 to rotate, and the two groups of first lead screws 601 are synchronously stopped, the structure linearly upward moved as a whole with the two groups of first lead screws 601 is synchronously stopped, and is self-locked through the thread engagement of the two groups of first lead screws 601 and the corresponding first threaded transmission sleeves 602, so that the current position of the above upward moved structure is fixedly kept; at the same time, reversely drive the two groups of second motors 701 to rotate, and the two groups of first lead screws 601 follow the corresponding connection of the second motors 701 to synchronously and in the same direction rotate, and the structure linearly upward moved as a whole with the two groups of first lead screws 601 is synchronously downward moved.

[0095] The position adjustment of the measured radar probe, the structure driving the measured radar probe to move left and right along the X-axis, and the structure driving the measured radar probe and the structure driving the measured radar probe to move left and right along the X-axis to move left and right along the Z-axis in the Y-axis direction: drive the third motor 702 to rotate along a fixed direction, and the gear 606 is synchronously and in the same direction rotated, because the rack 605 is fixed on the ground and keeps still, therefore, the gear 606 is linearly forward moved on the rack 605, and the third motor 702, the sliding support 504 and the structure linearly upward and downward moved and left and right moved as a whole follow the gear 606 to be synchronously linearly forward moved; stop driving the third motor 702, and the linearly forward moved structure is synchronously stopped, and is self-locked through the meshing relationship of the gear 606 and the rack 605, so that the current position of the above forward moved structure is fixedly kept; reversely drive the third motor 702 to rotate, and the gear 606 is synchronously reversely rotated, and drives the linearly forward moved structure to be linearly backward moved.

[0096] In conclusion, the utility model discloses through the cooperation of screw rod and screw sleeve, the cooperation of gear and rack, realize the high accuracy positioning and remove of the measured radar probe core in X, Y, Z three axial, utilize the self -locking characteristic of screw pair and the meshing of gear and rack, ensure the stability of position after motor stop, the design of multiple erecting unit supports the simultaneous test of multiple radar probe core, improve test efficiency and flexibility.

[0097] Embodiment 4

[0098] With reference to Figures 13-17 For the fourth embodiment of the utility model, the embodiment further provides a radar test bench. Still include movable obstacle unit 800.

[0099] Specifically, the movable obstacle unit 800 arranged on one side of the first slide rail 501 includes a fourth slide rail 801 arranged along the X-axis, a first sliding head 802 slidably connected with the fourth slide rail 801, a fifth slide rail 803 arranged along the Y-axis and fixedly connected with one side of the first sliding head 802, a second sliding head 804 fixedly connected with one side of the fifth slide rail 803, an auxiliary guide rail 805 slidably connected with the second sliding head 804, a third sliding head 806 slidably connected with the fifth slide rail 803, and an obstacle placement platform 807 fixedly connected with one side of the third sliding head 806.

[0100] It should be noted that, similarly to the gear and rack cooperation relationship in embodiment 2, one set of racks can be arranged in parallel on one side of the fourth slide rail 801 in the present embodiment, so that one set of motors is fixedly arranged on one side of the fifth slide rail 803, the shaft end of the motor is fixedly connected with a gear engaged with the ground rack, the motor is driven, and the fifth slide rail 803 and the obstacle placement platform 807 are driven to reciprocatingly linearly move on the fourth slide rail 801, so as to approach or move away from the erecting unit 500; the position of the obstacle placement platform 807 on the fifth slide rail 803 can also be adjusted, and similarly, racks are arranged in parallel on one side of the fifth slide rail 803, so that the obstacle placement platform 807 is fixedly connected with one set of motors, the shaft end of the motor is fixedly connected with a gear engaged with the ground rack, the motor is driven, and the obstacle placement platform 807 is driven to reciprocatingly linearly move on the fifth slide rail 803, and the gear on one side of the obstacle placement platform 807 and the rack parallel to the fifth slide rail 803 can be brought into engagement or disengagement by reciprocatingly linearly moving the fifth slide rail 803 and the obstacle placement platform 807 on the fourth slide rail 801.

[0101] In conclusion, the utility model discloses through the gear and rack cooperation relationship in embodiment 2, the position of the obstacle in X-axis direction and Y-axis direction can be realized, and the obstacle can be controlled to move away from or approach the erecting unit.

[0102] It is important that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A self-locking angular adjustment mechanism, characterized in that: Comprising, an angle adjusting unit (300) comprising a first angle adjusting block (301) and a second angle adjusting block (302) which can rotate with each other in a first direction; a transmission rod (100) arranged on one side of the first angle adjusting block (301) and comprising a helical groove (101) arranged on one side of the transmission rod (100); and a matching block (200) fixedly arranged on one side of the second angle adjusting block (302) and comprising a tooth array (201) engaged with the helical groove (101).

2. The self-locking angle adjusting mechanism according to claim 1, wherein: the angle adjusting unit (300) further comprises a third angle adjusting block (303) which can rotate with the second angle adjusting block (302) in a second direction perpendicular to the first direction.

3. The self-locking angle adjusting mechanism according to claim 2, wherein: the transmission rod (100) is arranged in two groups, one group of the transmission rod (100) is arranged on one side of the first angle adjusting block (301) along the Y-axis and the helical groove (101) is arranged along the Y-axis, and the other group of the transmission rod (100) is arranged on one side of the second angle adjusting block (302) along the Z-axis and the helical groove (101) is arranged along the Z-axis.

4. The self-locking angle adjusting mechanism according to claim 3, wherein: the matching block (200) is arranged in two groups corresponding to the two groups of transmission rods (100), one group of the matching block (200) is fixedly arranged on one side of the second angle adjusting block (302) and the tooth array (201) is arranged along the first direction, and the other group of the matching block (200) is fixedly arranged on one side of the third angle adjusting block (303) and the tooth array (201) is arranged along the second direction.

5. The self-locking angle adjusting mechanism according to claim 3, further comprising a first driving unit (400) comprising two groups of first motors (401) arranged corresponding to the two groups of transmission rods (100), and two groups of transmission sleeves (402) respectively sleeved on the shaft ends of the two groups of first motors (401), and the two groups of transmission sleeves (402) are respectively sleeved on one end of the two groups of transmission rods (100) at the same time.

6. The self-locking angle adjusting mechanism according to claim 5, further comprising a first support (A) fixedly connected with one of the first motors (401) and the first angle adjusting block (301) at the same time, a second support (B) fixedly arranged on one side of the third angle adjusting block (303), and a radar probe core (C) fixedly installed on the second support (B). comprising the self-locking angle adjusting mechanism according to claim 6; and ​ 7. A self-locking linear movement device, characterized by: ​ A mounting unit (500) arranged on one side of the first support (A) comprises a first sliding rail (501) arranged along the Y axis, at least two groups of second sliding rails (502) arranged along the Z axis, a third sliding rail (503) arranged along the X axis and fixedly connected to one side of the first support (A), and a sliding support (504) slidably connected to one side of the first sliding rail (501); one side of the sliding support (504) is fixedly connected to one side of the second sliding rail (502); And, A linear displacement unit (600) comprises at least two groups of first lead screws (601) arranged along the Z axis and rotatably connected to the sliding support (504), at least two groups of first threaded transmission sleeves (602) correspondingly sleeved on the two groups of first lead screws (601), a second lead screw (603) arranged along the X axis and rotatably connected to one side of one group of first threaded transmission sleeves (602), and a second threaded transmission sleeve (604) sleeved on the second lead screw (603).

8. The self-locking linear movement device according to claim 7, characterized in that: A second driving unit (700) comprises at least two groups of second motors (701) with shaft ends fixedly connected to one end of the two groups of first lead screws (601), and a third motor (702) fixedly connected to one side of one group of first threaded transmission sleeves (602); the shaft end of the third motor (702) is fixedly connected to one end of the second lead screw (603).

9. The self-locking linear movement device according to claim 8, characterized in that: The linear displacement unit (600) further comprises a rack (605) arranged along the Y axis and arranged on one side of the first sliding rail (501), and a gear (606) meshingly connected to one side of the rack (605); The second driving unit (700) further comprises a fourth motor (703) with a shaft end fixedly connected to the middle of the gear (606).

10. A radar test bench, characterized in that: The self-locking linear movement device according to claim 8 or 9; and A movable obstacle unit (800) arranged on one side of the first sliding rail (501) comprises a fourth sliding rail (801) arranged along the X axis, a first sliding head (802) slidably connected to the fourth sliding rail (801), a fifth sliding rail (803) arranged along the Y axis and fixedly connected to one side of the first sliding head (802), a second sliding head (804) fixedly connected to one side of the fifth sliding rail (803), an auxiliary guide rail (805) slidably connected to the second sliding head (804), a third sliding head (806) slidably connected to the fifth sliding rail (803), and an obstacle placement platform (807) fixedly connected to one side of the third sliding head (806).

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