Cross beam structure and calibration equipment

Abstract

The utility model provides a cross beam structure and calibration equipment, the calibration equipment comprises a stand column and a cross beam structure, the cross beam structure is installed on the stand column, and the height position of the cross beam structure on the stand column is adjustable. The cross beam structure comprises a cross beam assembly which comprises a first cross beam unit and second cross beam units connected to the two opposite ends of the first cross beam unit; the hinge assembly is connected between the first cross beam unit and the second cross beam unit, so that the second cross beam unit has an unfolded state in which the second cross beam unit is unfolded in parallel relative to the first cross beam unit and a folded state in which the second cross beam unit is vertically folded relative to the first cross beam unit; the first locking assembly is used for locking the second cross beam unit in a folded state; and the second locking assembly is used for locking the second cross beam unit in the unfolded state. The cross beam structure can be unfolded to achieve hanging of different calibration elements, can be folded to reduce occupied space, and is convenient to store and carry.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle calibration equipment, and more particularly to a beam structure and a calibration equipment. BACKGROUND

[0002] The sensors used by the advanced driver assistant system (ADAS) mainly include cameras, radars, lasers and ultrasonic waves, which can detect light, heat, pressure or other variables for monitoring the state of the vehicle, and are usually located on the front and rear bumpers, side mirrors, inside the steering column or on the windshield of the vehicle. During the use of the vehicle, vibration, collision, environmental temperature and humidity, etc. will change the physical installation state of the above-mentioned sensors, so calibration or calibration needs to be carried out from time to time.

[0003] When calibrating or calibrating the above-mentioned sensors, a vehicle calibration equipment is usually used to mount calibration elements to calibrate or calibrate the sensors on the vehicle. In order to suspend a variety of calibration elements, the calibration equipment adopts a large-size beam assembly design, which causes the beam assembly to have a relatively large volume and occupy a large space, which is not convenient to carry. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the application is to provide a beam structure and a calibration equipment to solve the technical problem of large size of the beam assembly of the calibration equipment in the prior art, which leads to large space occupation and inconvenience in carrying.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the application is to provide a beam structure, comprising:

[0006] The beam assembly comprises a first beam unit and a second beam unit connected to opposite ends of the first beam unit;

[0007] The hinge assembly is connected between the first beam unit and the second beam unit, so that the second beam unit has an unfolded state parallel to the first beam unit and a folded state perpendicular to the first beam unit;

[0008] The first locking assembly is used to lock the second beam unit in the folded state;

[0009] The second locking assembly is used to lock the second beam unit in the unfolded state.

[0010] In some embodiments, the hinge assembly comprises a first hinge unit and a second hinge unit hingedly connected to each other, the first hinge unit and the second hinge unit are respectively mounted to the first beam unit and the second beam unit; the first hinge unit has a first abutting surface, and the second hinge unit has a second abutting surface; when the second beam unit is in the unfolded state, the second abutting surface is perpendicular to the first abutting surface; when the second beam unit is in the folded state, the second abutting surface abuts against the first abutting surface.

[0011] In some embodiments, the first locking assembly comprises a first clamping portion provided on the first hinge unit and a second clamping portion provided on the second hinge unit; in the folded state, the first clamping portion and the second clamping portion are elastically clamped.

[0012] In some embodiments, the first locking assembly comprises a first clamping member slidingly provided on the first hinge unit and a first elastic member abutting between the first clamping member and the first hinge unit, the first clamping portion is formed on the first clamping member, and the second clamping portion is fixedly connected to the second hinge unit.

[0013] In some embodiments, the first elastic member and the first clamping member are both provided inside the first hinge unit, the first hinge unit has a first window and a second window, and the first clamping member extends the first clamping portion and a pressing portion to the first window and the second window, respectively.

[0014] In some embodiments, the second locking assembly comprises a first locking unit provided on the first beam unit and a second locking unit provided on the second beam unit; in the unfolded state, the first locking unit and the second locking unit can be locked by plugging.

[0015] In some embodiments, the first locking unit comprises a first lock seat, a movable member movably provided on the first lock seat, and a second elastic member connected to the movable member, and the second locking unit comprises a lock tongue; in the unfolded state, the lock tongue can be inserted into the first lock seat to be clamped with the movable member.

[0016] In some embodiments, the first locking unit comprises two movable members movably provided on the first lock seat, the second elastic member is connected between the two movable members, and the first lock seat is provided with two buttons connected to the two movable members, respectively; the two movable members can clamp the lock tongue under the elastic force of the second elastic member; pressing the two buttons can drive the two movable members to move to release the lock tongue.

[0017] In some embodiments, the beam structure further comprises a damping assembly connected between the first beam unit and the second beam unit and used to slow down the rotation speed of the second beam unit relative to the first beam unit.

[0018] In another aspect, the application further provides a calibration device comprising a column and the above-mentioned beam structure, wherein the beam structure is mounted on the column and is adjustable in height position of the column.

[0019] The beam structure and the calibration device provided by the application have the advantages that: through the arrangement of the hinged assembly, the two second beam units can be parallelly unfolded or vertically folded relative to the first beam unit, wherein the parallel unfolding can make the size of the beam structure larger, so as to facilitate the mounting of different calibration elements, and the vertical folding can make the second beam units on both sides of the first beam unit be folded relative to the first beam unit, so as to reduce the occupied space of the beam structure and facilitate the storage and transportation. In addition, the arrangement of the first locking assembly and the second locking assembly can lock the second beam units in the folded state and the unfolded state, so as to ensure the unfolding stability and the folding stability of the beam structure. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 A perspective view of the calibration device provided by the embodiment of the application;

[0022] Figure 2 An unfolded state schematic view of the beam structure provided by the embodiment of the application;

[0023] Figure 3 A folded state schematic view of the beam structure provided by the embodiment of the application;

[0024] Figure 4 An unfolded state enlarged structure schematic view of the hinged assembly and the first locking assembly in the beam structure provided by the embodiment of the application;

[0025] Figure 5 A folded state cross-sectional schematic view of the hinged assembly and the first locking assembly in the beam structure provided by the embodiment of the application;

[0026] Figure 6 A perspective structure schematic view of the second locking assembly in the beam structure provided by the embodiment of the application;

[0027] Figure 7 This is a schematic cross-sectional structural diagram of the second locking assembly in the beam structure provided in an embodiment of the present application.

[0028] Among them, the reference numerals in the figures are:

[0029] 1. Beam structure; 100. Beam assembly; 110. First beam unit; 120. Second beam unit; 200. Hinge assembly; 210. First hinge unit; 211. First hinge seat; 212. Cover plate; 213. First fitting surface; 214. First window; 215. Second window; 216. First reinforcement block; 220. Second hinge unit; 221. Second hinge seat; 2211. Second fitting surface; 222. Second reinforcement block; 230. First rotating shaft; 240. Nut; 250. Damping plate; 300. First locking assembly; 310. First clamping member; 311. First clamping portion; 312. Press Pressing portion; 320, first elastic member; 330, second clamping member; 331, second clamping portion; 400, second locking assembly; 410, first locking unit; 411, first lock seat; 4111, seat body; 4112, upper cover; 412, movable member; 4121, hook; 413, second elastic member; 414, button; 415, second rotating shaft; 420, second locking unit; 421, second lock seat; 422, lock tongue; 4221, connecting portion; 4222, plug-in portion; 500, damping assembly; 510, first connecting rod; 520, damping structure; 530, second connecting rod; 2, column; 3, base. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] Furthermore, the terms "second", "first", "second", "first" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "second", "first" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0034] Please refer to Figures 1 to 4 The beam structure 1 provided by the embodiments of the present application will be described. The beam structure 1 is applied to a calibration device, and the beam assembly 100 is used to fix a calibration element for calibrating or calibrating a sensor of a vehicle, for example, to fix a radar calibration device, or to fix a target for calibration or calibration.

[0035] The beam structure 1 includes a beam assembly 100, a hinge assembly 200, a first locking assembly 300, and a second locking assembly 400; the beam assembly 100 includes a first beam unit 110 and two second beam units 120, and the two second beam units 120 are respectively connected to opposite ends of the first beam unit 110; the hinge assembly 200 is connected between the first beam unit 110 and the second beam unit 120, so that the second beam unit 120 has an unfolded state parallel to the first beam unit 110 and a folded state perpendicular to the first beam unit 110; the first locking assembly 300 is used to lock the second beam unit 120 in the folded state; and the second locking assembly 400 is used to lock the second beam unit 120 in the unfolded state.

[0036] When installed, the first beam unit 110 is installed on a column 2 of the calibration device. When used, the two second beam units 120 are unfolded parallel to the first beam unit 110 to the unfolded state, and the two second beam units 120 are locked in the unfolded state by the second locking assembly 400, at this time, the calibration element can be mounted on the first beam unit 110 and / or the second beam unit 120, thereby realizing the calibration and calibration of the sensor on the vehicle. When stored or transported, the two second beam units 120 are vertically folded upward relative to the first beam unit 110 to the folded state, specifically folded to opposite sides of the column 2 and arranged parallel to the column 2, and the two second beam units 120 are locked in the folded state by the first locking assembly 300, to facilitate storage and transportation.

[0037] The beam structure 1 in the embodiment of the present application, through the setting of the hinge assembly 200, realizes that the two second beam units 120 can be parallelly unfolded or vertically folded relative to the first beam unit 110, wherein the parallel unfolding can make the size of the beam structure 1 larger, so as to realize the mounting of different calibration elements, and the vertical folding makes the second beam units 120 on both sides of the first beam unit 110 can be folded relative to the first beam unit 110, which can reduce the occupied space of the beam structure 1, and is convenient for storage and transportation. In addition, the setting of the first locking assembly 300 and the second locking assembly 400 can lock the second beam unit 120 in the folded state and the unfolded state, so as to ensure the unfolding stability and folding stability of the beam structure 1.

[0038] In some embodiments, referring to Figures 3 to 4 , the hinge assembly 200 comprises a first hinge unit 210 and a second hinge unit 220 hingedly connected with each other, the first hinge unit 210 and the second hinge unit 220 are respectively installed on the first beam unit 110 and the second beam unit 120, the first hinge unit 210 has a first abutting surface 213, and the second hinge unit 220 has a second abutting surface 2211; when the second beam unit 120 is in the unfolded state, the second abutting surface 2211 is perpendicular to the first abutting surface 213; when the second beam unit 120 is in the folded state, the second abutting surface 2211 abuts against the first abutting surface 213.

[0039] Wherein, through the mutual hinging of the first hinge unit 210 and the second hinge unit 220, the second beam unit 120 is rotated to the unfolded state relative to the first beam unit 110, and the second beam unit 120 is rotated to the folded state relative to the first beam unit 110. At the same time, the setting of the first abutting surface 213 and the second abutting surface 2211 can limit the rotation angle of the second beam unit 120, so as to avoid the second beam unit 120 continuing to rotate to 180 degrees. In addition, when the second beam unit 120 is rotated to the horizontal unfolded state relative to the first beam assembly 100, the first end surface of the second beam unit 120 facing the first beam unit 110 abuts against the second end surface of the first beam unit 110 facing the second beam unit 120, so as to limit the second hinge unit 220 from continuing to rotate.

[0040] In some embodiments, referring to Figures 3 to 5The first and second hinge units 210 and 220 are respectively arranged on the top side of the first cross beam unit 110 and the top side of the second cross beam unit 120. The first abutting surface 213 is a plane perpendicular to the top side of the first cross beam unit 110. The second abutting surface 2211 is a plane parallel to the top side of the second cross beam unit 120. It can be understood that in other embodiments of the present application, the first hinge unit 210 can also abut against the second cross beam unit 120 in a plane to limit the rotation, or the second hinge unit 220 can also abut against the first cross beam unit 110 in a plane to limit the rotation, which is not limited herein.

[0041] In some embodiments, referring to Figure 4 and Figure 5 The first locking assembly 300 includes a first clamping portion 311 arranged on the first hinge unit 210 and a second clamping portion 331 arranged on the second hinge unit 220. In the folded state, the first clamping portion 311 and the second clamping portion 331 are elastically clamped.

[0042] The first clamping portion 311 and the second clamping portion 331 can be elastically clamped. At least one of the first clamping portion 311 and the second clamping portion 331 can have an elastic structure itself, so that the first clamping portion 311 and the second clamping portion 331 are elastically clamped. Alternatively, at least one of the first clamping portion 311 and the second clamping portion 331 can be connected with an elastic member, so that the first clamping portion 311 and the second clamping portion 331 are elastically clamped under the elastic force of the elastic member.

[0043] When the second cross beam unit 120 rotates relative to the first cross beam unit 110 to the folded state, the second clamping portion 331 moves with the second cross beam unit 120 to elastically clamp the first clamping portion 311, thereby locking the second cross beam unit 120 in the folded state. At the same time, since the first clamping portion 311 and the second clamping portion 331 are elastically clamped, an external force can be used to overcome the elastic clamping force of the first clamping portion 311 and the second clamping portion 331 to separate the first clamping portion 311 and the second clamping portion 331, thereby achieving the rotation and unfolding of the second cross beam unit 120.

[0044] In some embodiments, referring to Figure 4 and Figure 5 The first locking assembly 300 includes a first clamping member 310 slidingly arranged on the first hinge unit 210 and a first elastic member 320 abutting against the first clamping member 310 and the first hinge unit 210. The first clamping portion 311 is formed on the first clamping member 310. The second clamping portion 331 is fixedly connected to the second hinge unit 220.

[0045] When the second beam unit 120 is rotated to the folded state, the second clamping part 331 is clamped with the first clamping part 311, and the first elastic member 320 keeps the first clamping part 311 clamped with the second clamping part 331. When unfolding is needed, the first clamping part 311 can be separated from the second clamping part 331 by pressing the first clamping member 310 to overcome the elastic force of the first elastic member 320 on the first clamping part 311. It can be understood that in other embodiments of the present application, the first clamping part 311 can also be fixedly arranged on the first hinge unit 210, and the second clamping part 331 is movably arranged on the second hinge unit 220 through the first elastic member 320, which is not limited herein.

[0046] In some embodiments, referring to Figure 4 , the first locking assembly 300 comprises a second clamping member 330, the second clamping member 330 is integrally formed on the second hinge unit 220, and the second clamping part 331 is formed on the second clamping member 330.

[0047] In some embodiments, referring to Figure 4 and Figure 5 , the first elastic member 320 and the first clamping member 310 are arranged inside the first hinge unit 210, the first hinge unit 210 has a first window 214 and a second window 215, and the first clamping member 310 extends the first clamping part 311 and the pressing part 312 to the first window 214 and the second window 215, respectively. The first clamping part 311 is used for clamping with the second clamping part 331, and the pressing part 312 is used for being pressed by the user. The first clamping member 310 is pressed through the pressing part 312 to overcome the elastic pressure of the first elastic member 320, so as to realize the separation of the first clamping part 311 and the second clamping part 331.

[0048] Optionally, the first elastic member 320 is vertically telescopic, and the first window 214 and the second window 215 are respectively located on two adjacent sides of the first hinge unit 210. Specifically, the first window 214 faces the second hinge unit 220, and the second window 215 is located on the top side of the first hinge unit 210. In this way, the user can press the first clamping member 310 from the top side to realize the unlocking of the first clamping part 311 and the second clamping part 331. It can be understood that in other embodiments of the present application, the first window 214 and the second window 215 can also be arranged at other positions, which are not limited herein.

[0049] In some embodiments, referring to Figure 4 and Figure 5The first hinge unit 210 includes a first hinge seat 211 and a cover plate 212. The first hinge seat 211 is fixed to the first crossbeam unit 110. The first hinge seat 211 has a mounting cavity with a top opening. The first elastic member 320 is installed in the mounting cavity. The first clamping member 310 is slidably disposed in the mounting cavity. The cover plate 212 covers the top opening of the first hinge seat 211 and is locked. The cover plate 212 and the first hinge seat 211 together enclose a first window 214. A second window 215 is formed in the cover plate 212. The division of the first hinge unit 210 into the first hinge seat 211 and the cover plate 212 facilitates assembly and disassembly of the first elastic member 320 and the first clamping member 310.

[0050] Optionally, the first elastic member 320 is a cylindrical spring or a spring.

[0051] Optionally, the first hinge seat 211 is fastened to the first beam unit 110 by screws or bolts for easy assembly and disassembly.

[0052] Optionally, the cover plate 212 is fastened to the first hinge seat 211 by nails or bolts, which is convenient for assembly and disassembly.

[0053] In some embodiments, see Figure 4 A first reinforcement block 216 is provided on the back of the first crossbeam unit 110. The first reinforcement block 216 is attached to the back of the first crossbeam unit 110 and the back of the first hinge seat 211, and is secured to each end with screws. The provision of the first reinforcement block 216 enhances the connection reliability of the first hinge unit 210 to the first crossbeam unit 110 and also strengthens the structural strength of the first crossbeam unit 110 at the connection point.

[0054] In some embodiments, see Figure 4 The hinge assembly 200 further includes a first rotating shaft 230, a nut 240, and a damping plate 250. The first hinge unit 210 and the second hinge unit 220 are respectively rotatably mounted on the first rotating shaft 230. One end of the first rotating shaft 230 has a baffle, and the nut 240 is locked to the other end of the first rotating shaft 230. The damping plate 250 abuts between the nut 240 and the first hinge unit 210 / the second hinge unit 220.

[0055] In some embodiments, see Figure 4 The second hinge unit 220 includes a second hinge seat 221 , which is locked and fixed to the second beam unit 120 , and the second hinge seat 221 is rotatably sleeved on the first rotating shaft 230 .

[0056] See also Figure 4The back of the second cross beam unit 120 is provided with a second reinforcing block 222, which is respectively attached to the back of the second cross beam unit 120 and the back of the second hinge seat 221 and is locked by screws. The second reinforcing block 222 can enhance the connection reliability of the second hinge unit 220 to the second cross beam unit 120 and the structural strength of the second cross beam unit 120 at the connection position. In addition, the second reinforcing block 222 is also rotatably sleeved on the first rotating shaft 230, and the nut 240 abuts the damping sheet 250 against the side surface of the second reinforcing block 222.

[0057] In some embodiments, referring to Figure 3 , Figure 6 and Figure 7 , the second locking assembly 400 includes a first locking unit 410 arranged on the first cross beam unit 110 and a second locking unit 420 arranged on the second cross beam unit 120, and the first locking unit 410 and the second locking unit 420 can be inserted and locked. Specifically, when the second cross beam unit 120 is rotated relative to the first cross beam unit 110 to the horizontal unfolded state, the first locking unit 410 and the second locking unit 420 can be inserted and locked, thereby limiting the rotation and folding of the second cross beam unit 120 relative to the first cross beam unit 110, so as to lock the second cross beam unit 120 in the unfolded state.

[0058] Specifically, the first hinge unit 210 is arranged on the top side of the first cross beam unit 110, the second hinge unit 220 is arranged on the top side of the second cross beam unit 120, the first locking unit 410 is arranged on the bottom side of the first cross beam unit 110, and the second locking unit 420 is arranged on the bottom side of the second cross beam unit 120.

[0059] In some embodiments, referring to Figure 6 and Figure 7 , the first locking unit 410 includes a first lock seat 411, a movable piece 412 movably arranged in the first lock seat 411, and a second elastic piece 413 connected to the movable piece 412, and the second locking unit 420 includes a lock tongue 422; in the unfolded state, the lock tongue 422 can be inserted into the first lock seat 411 to be clamped with the movable piece 412. The second elastic piece 413 is arranged so that the movable piece 412 can be clamped with the lock tongue 422 under the elastic force of the second elastic piece 413, so that the second cross beam unit 120 is locked in the unfolded state, and the movable piece 412 and the lock tongue 422 can be separated by pressing the movable piece 412 to overcome the elastic force of the second elastic piece 413, thereby unlocking the first locking assembly 300.

[0060] In some embodiments, referring to Figure 6 and Figure 7The first locking unit 410 comprises two movable members 412 movably arranged in the first lock seat 411, and a second elastic member 413 connected between the two movable members 412. The first lock seat 411 is provided with two buttons 414 connected with the two movable members 412 respectively. The two movable members 412 can clamp the lock tongue 422 under the elastic force of the second elastic member 413. Pressing the two buttons 414 can drive the two movable members 412 to move to release the lock tongue 422. Through the arrangement of the two movable members 412, the two movable members 412 can clamp the lock tongue 422 together to ensure stable locking. The arrangement of the two buttons 414 makes it easy to unlock the first locking assembly 300 by pressing the two buttons 414, which is simple and labor-saving.

[0061] Preferably, the two buttons 414 are arranged on opposite sides of the first lock seat 411, so that the user can press the two buttons 414 with two fingers of one hand, that is, one-handed operation is possible, which is convenient and easy to apply force. Of course, in other embodiments, the button 414 can be integrally connected with the movable member 412, that is, a part of the movable member 412 extends out of the surface of the first lock seat 411 as the button 414. In addition, in other embodiments, the number of movable members 412 and buttons 414 can be one, which is not limited here.

[0062] In some embodiments, the first lock seat 411 is provided with a second rotating shaft 415, and the two movable members 412 are rotatably arranged on the second rotating shaft 415. The second elastic member 413 is a torsion spring, and the second elastic member 413 is sleeved on the second rotating shaft 415. The opposite ends of the second elastic member 413 are connected with the two movable members 412 respectively. The first ends of the two movable members 412 are connected with the two buttons 414 respectively, and the second ends of the two movable members 412 are close to each other under the action of the torsion spring to clamp the lock tongue 422. Pressing the two buttons 414 can push the second ends of the two movable members 412 to move close to each other, so that the first ends of the two movable members 412 move away from each other to release the lock tongue 422. It can be understood that in other embodiments of the present application, the two movable members 412 can be slidably arranged in the first lock seat 411, and the second elastic member 413 can be a cylindrical spring, which is not limited here.

[0063] In some embodiments, please refer to Figure 6 and Figure 7The second locking unit 420 comprises a second locking seat 421, and the locking tongue 422 comprises a connecting portion 4221 and a plug-in portion 4222. The connecting portion 4221 extends from the second locking seat 421 to the first locking seat 411. The plug-in portion 4222 is formed on the side of the connecting portion 4221 away from the second locking seat 421. The plug-in portion 4222 is triangular in shape. The width of the plug-in portion 4222 gradually decreases from the connecting portion 4221 to the side away from the connecting portion 4221. The maximum width of the plug-in portion 4222 is greater than the width of the connecting portion 4221. A step surface is formed at the joint of the plug-in portion 4222 and the connecting portion 4221. The second end of the movable piece 412 has a hook portion 4121. When the second cross beam unit 120 is parallelly unfolded relative to the first cross beam unit 110, the plug-in portion 4222 of the locking tongue 422 is inserted into the second locking seat 421 and between the second ends of the two movable pieces 412. Under the action of the second elastic piece 413, the hook portions 4121 of the two movable pieces 412 hook the step surfaces on the two sides of the plug-in portion 4222, thereby preventing the plug-in portion 4222 from falling off.

[0064] Specifically, the second locking seat 421 is fixed on the bottom side of the second cross beam unit 120 by screw locking.

[0065] Specifically, the first locking seat 411 comprises a seat body 4111 and an upper cover 4112. The second rotating shaft 415, the two movable pieces 412 and the second elastic piece 413 are all installed on the seat body 4111. The upper cover 4112 is buckled on the seat body 4111 and covers the second rotating shaft 415, the two movable pieces 412 and the second elastic piece 413. The two buttons 414 are respectively installed on the upper cover 4112. The first locking seat 411 is divided into the seat body 4111 and the upper cover 4112, which facilitates the disassembly and assembly of the second rotating shaft 415, the two movable pieces 412 and the second elastic piece 413.

[0066] In some embodiments, referring to Figure 2 and Figure 4 The cross beam structure 1 further comprises a damping assembly 500 connected between the first cross beam unit 110 and the second cross beam unit 120 and used for slowing down the rotating speed of the second cross beam unit 120 relative to the first cross beam unit 110, thereby reducing the damage to the hinged assembly 200 caused by the sudden upward rotation of the second cross beam unit 120.

[0067] Specifically, referring to Figure 4The damping assembly 500 comprises a first connecting rod 510, a damping structure 520 and a second connecting rod 530. The first connecting rod 510 is connected with opposite ends of the damping structure 520 respectively. The damping structure 520 is capable of stretching and contracting. An end of the first connecting rod 510 away from the damping structure 520 is connected with the first cross beam unit 110. An end of the second connecting rod 530 away from the damping structure 520 is connected with the second cross beam unit 120. The damping structure 520 comprises but is not limited to a damping elastic member and always has a tendency of stretching. When the second cross beam unit 120 rotates upward relative to the first cross beam unit 110 to the folding state, the damping assembly 500 always has a damping to the second cross beam unit 120 to prevent the second cross beam unit 120 from rotating upward, thereby simplifying the rotation speed of the second cross beam unit 120 and reducing the damage to the hinged assembly 200 caused by the sudden upward rotation of the second cross beam unit 120.

[0068] In some embodiments, the damping assembly 500 is arranged obliquely. The position where the damping assembly 500 is connected with the first cross beam unit 110 is lower than the position where the damping assembly 500 is connected with the second cross beam unit 120, so that the damping assembly 500 has an upward pushing force to the second cross beam unit 120.

[0069] On the other hand, referring to Figure 1 The application further provides a calibration device comprising a stand 2 and the above-mentioned cross beam structure 1. The cross beam structure 1 is installed on the stand 2 and the height position of the cross beam structure 1 on the stand 2 is adjustable. The calibration device provided by the embodiments of the application has a small occupied space and is convenient to carry due to the arrangement of the above-mentioned cross beam structure 1.

[0070] In addition, the calibration device further comprises a base 3. The stand 2 is installed on the base 3.

[0071] The above only describes the preferred embodiments of the application and is not used to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A beam structure, characterized by The application relates to a beam structure, comprising: a beam assembly, comprising a first beam unit and a second beam unit connected to opposite ends of the first beam unit; a hinge assembly connected between the first beam unit and the second beam unit, so that the second beam unit has an unfolded state parallel to the first beam unit and a folded state perpendicular to the first beam unit; a first locking assembly for locking the second beam unit in the folded state; a second locking assembly for locking the second beam unit in the unfolded state.

2. The beam structure of claim 1, wherein The hinge assembly comprises a first hinge unit and a second hinge unit hingedly connected to each other, and the first hinge unit and the second hinge unit are respectively mounted on the first beam unit and the second beam unit; the first hinge unit has a first abutting surface, and the second hinge unit has a second abutting surface; when the second beam unit is in the unfolded state, the second abutting surface is perpendicular to the first abutting surface; when the second beam unit is in the folded state, the second abutting surface abuts against the first abutting surface.

3. The beam structure of claim 2, wherein, The first locking assembly comprises a first clamping portion arranged on the first hinge unit and a second clamping portion arranged on the second hinge unit; in the folded state, the first clamping portion and the second clamping portion are elastically clamped.

4. The beam structure of claim 3, wherein The first locking assembly comprises a first clamping piece slidingly arranged on the first hinge unit and a first elastic piece abutting between the first clamping piece and the first hinge unit, the first clamping portion is formed on the first clamping piece, and the second clamping portion is fixedly connected to the second hinge unit.

5. The beam structure of claim 4, wherein The first elastic piece and the first clamping piece are arranged inside the first hinge unit, the first hinge unit has a first window and a second window, and the first clamping piece extends the first clamping portion and a pressing portion to the first window and the second window respectively.

6. Beam structure according to any of claims 1 to 5, characterized in that The second locking assembly comprises a first locking unit arranged on the first beam unit and a second locking unit arranged on the second beam unit; in the unfolded state, the first locking unit and the second locking unit can be locked by being inserted into each other.

7. The beam structure of claim 6, wherein The first locking unit comprises a first lock seat, a movable piece movably arranged on the first lock seat and a second elastic piece connected to the movable piece, and the second locking unit comprises a lock tongue; in the unfolded state, the lock tongue can be inserted into the first lock seat to be clamped with the movable piece.

8. The beam structure of claim 7, wherein The first locking unit comprises two movable pieces movably arranged on the first lock seat, the second elastic piece is connected between the two movable pieces, the first lock seat is provided with two buttons connected with the two movable pieces respectively; the two movable pieces can clamp the lock tongue under the elastic force of the second elastic piece; pressing the two buttons can drive the two movable pieces to move to release the lock tongue.

9. The beam structure of any one of claims 1 to 5, wherein, The beam structure further comprises a damping assembly connected between the first beam unit and the second beam unit and used for slowing down the rotating speed of the second beam unit relative to the first beam unit.

10. A calibration device, characterized by A post and a cross member structure as claimed in any one of claims 1 to 9, mounted on the post and adjustable in height position on the post.

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