Folding hinge, folding cross beam, calibration equipment and calibration system

Abstract

The embodiment of the utility model relates to the technical field of automobile calibration devices, in particular to a folding hinge, a folding beam, calibration equipment and a calibration system. The folding hinge comprises a base, two hinge units and two workpiece supports. The workpiece support is folded and unfolded through the hinge unit. The folding hinge is folded upwards to be stored, so that when the folding hinge is applied to a folding beam, the folding beam is not limited by space to be folded and stored. The hinge unit comprises a one-way bearing and a damping assembly which are rotationally connected, and the one-way bearing is connected with the fixing shaft through a fixing piece. The damping assembly is connected with the rotating piece, and when the damping assembly is driven by driving force in the folding direction, the rotating piece is driven to rotate in the folding direction. And when being driven by the driving force in the unfolding direction, the relative rotating piece rotates towards the unfolding direction. When no driving force is applied, the one-way bearing is locked, the damping assembly limits the workpiece support and the workpiece to rotate in the unfolding direction through the damping effect, the workpiece support and the workpiece can suspend at any angle, and the safety problem caused by free falling is avoided.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of automobile calibration device, in particular to a folding hinge, a folding beam, a calibration device and a calibration system. BACKGROUND

[0002] Currently, the common folding beams on the market mainly have two types of upward folding and downward folding. The upward folding can be stretched when used and folded upward when not used, but there is a risk of falling of the beam due to non-human factors in the folding process, which can cause harm to the user. The downward folding has space limitations, for example, when the beam is long, the downward folding of the beam will abut against the ground, resulting in that the beam cannot be completely folded. CONTENT OF THE UTILITY MODEL

[0003] One purpose of the embodiment of the present application is to provide a folding hinge, a folding beam, a calibration device and a calibration system to solve the technical problems of space limitations and falling safety hazards in the folding of the beam in the related technical content.

[0004] In a first aspect, the embodiment of the present application provides a folding hinge, comprising a base, two hinge units and two workpiece supports, the base comprises two fixed shafts, each hinge unit is installed on a corresponding fixed shaft, and each workpiece support is connected to a corresponding hinge unit, the two hinge units can make the two workpiece supports fold upward and respectively expand to two sides by relative rotation, each hinge unit comprises:

[0005] a one-way bearing, the one-way bearing comprises a fixed part and a rotating part, the fixed part is connected to the fixed shaft, the rotating part is connected to the fixed part, the rotating part can rotate about the rotation axis in the folding direction relative to the fixed shaft, and the rotating part is limited in the expansion direction; and

[0006] a damping assembly, the damping assembly is in damping rotation connection with the rotating part, the damping assembly is fixedly connected to the workpiece support, when the damping assembly is driven by the driving force in the folding direction, the damping assembly can drive the rotating part to rotate about the rotation axis in the folding direction relative to the fixed part, when the damping assembly is driven by the driving force in the expansion direction, the damping assembly can rotate about the rotation axis in the expansion direction relative to the rotating part, and when the damping assembly is not driven by the driving force in the folding direction and the driving force in the expansion direction, the damping assembly can suspend the workpiece support on which the workpiece is installed.

[0007] Optionally, the rotating member comprises a bearing outer ring and a bearing sleeve, the bearing sleeve is sleeved on the bearing outer ring and fixedly connected with the bearing outer ring, the bearing sleeve comprises a damping fitting part, the damping fitting part is a rotation structure arranged circumferentially around the bearing sleeve, and the damping fitting part is in damping rotation connection with the damping assembly.

[0008] Optionally, the damping fitting part is a first flange arranged circumferentially on the bearing sleeve, and the damping assembly comprises:

[0009] a friction plate, the friction plate is annular and sleeved on the fixed shaft, the friction plate comprises a first contact surface, and the first contact surface is in damping contact with one end surface of the first flange; and

[0010] an end cover, the friction plate, the end cover and the first flange are arranged in layers, the first flange is arranged between the friction plate and the end cover, the friction plate, the end cover and the workpiece support are fixedly connected together, the end cover covers the one-way bearing and the fixed shaft, the end cover comprises a second contact surface, and the second contact surface is in damping contact with the other end surface of the first flange.

[0011] Optionally, the base further comprises a bottom plate, each fixed shaft is vertically connected to the bottom plate, and the workpiece support comprises:

[0012] a connecting part, the connecting part is provided with a relief hole, the connecting part is sleeved on the fixed shaft through the relief hole, the bottom plate, the connecting part, the friction plate, the first flange and the end cover are arranged in layers in sequence, and the friction plate, the end cover and the connecting part are fixedly connected together; and

[0013] a workpiece mounting part, the workpiece mounting part is connected to the connecting part, and the workpiece mounting part is used for mounting the workpiece.

[0014] Optionally, the bottom plate is provided with a sink groove and a through hole, the through hole is respectively communicated with the sink groove and the relief hole, the sink groove is located at the bottom of the bottom plate, and the fixed shaft comprises:

[0015] a lower shaft, the lower shaft comprises a first shaft body and a second flange, the second flange is arranged circumferentially around the first shaft body and connected to the first shaft body, the second flange is accommodated in the sink groove and abuts against the bottom surface of the sink groove, the second flange is fixedly connected to the bottom plate, the first shaft body penetrates through the through hole, and the connecting part and the friction plate are sleeved on the first shaft body in sequence;

[0016] The upper shaft comprises a second shaft body and a third flange, the third flange is arranged circumferentially around the second shaft body and connected to the second shaft body, the first shaft body is coaxially arranged with the second shaft body and fixedly connected to the second shaft body, and the one-way bearing is arranged on the second shaft body and abuts against the third flange.

[0017] Optionally, the connecting part comprises a limiting fitting part, the limiting fitting part is capable of rotating relative to the fixed shaft around the rotation axis along with the end cover, the bottom plate comprises a limiting part, the limiting part is arranged on the rotation stroke of the limiting part, and the limiting part is used for being connected to the limiting fitting part to limit the workpiece support when the workpiece support is folded upward.

[0018] Optionally, the workpiece support further comprises a positioning fitting part, the positioning fitting part is connected to the workpiece mounting part, and the positioning fitting part is capable of rotating relative to the fixed shaft around the rotation axis along with the workpiece mounting part.

[0019] The base further comprises two positioning supports, each of the positioning supports is fixedly installed on the bottom plate, each of the positioning supports is arranged on the rotation stroke of the positioning fitting part of the corresponding workpiece support, and the positioning support is used for being connected to the corresponding positioning fitting part when the workpiece support is completely unfolded.

[0020] In a second aspect, the embodiments of the present application further provide a folding cross beam, comprising:

[0021] a first cross beam unit;

[0022] a second cross beam unit; and

[0023] The folding hinge as described in any one of the above, one of the two workpiece supports is installed with the first cross beam unit, and the other is installed with the second cross beam unit, the folding hinge is capable of making the first cross beam unit and the second cross beam unit close to each other and aligned with each other in the length direction when the two workpiece supports are unfolded to two sides respectively, and making the first cross beam unit and the second cross beam unit fold close to each other when the two workpiece supports are folded upward together.

[0024] In a third aspect, the embodiments of the present application provide a calibration device, comprising:

[0025] a base;

[0026] a main frame, the main frame is vertically arranged on the base; and

[0027] The folding cross beam as described above is installed on the main frame.

[0028] In a fourth aspect, embodiments of this application also provide a calibration system, including:

[0029] The calibration equipment described above; and

[0030] A diagnostic instrument, which is communicatively connected to the calibration device.

[0031] The embodiments of this application can achieve the following technical effects: the folding hinge folds upwards for storage, so that when applied to a folding beam, the folding and storage of the beam is not limited by space. The folding hinge includes a base, two hinge units, and two workpiece supports. Each hinge unit is fixed on a fixed shaft of the base, and the workpiece supports are connected to the hinge units, realizing the folding and unfolding actions through the hinge units.

[0032] The hinge unit includes a one-way bearing and a damping assembly. The one-way bearing is connected to a fixed shaft via a fixed component, while the rotating component is connected to the fixed component, allowing the rotating component to rotate freely in the retracting direction and lock in the unfolding direction. The damping assembly is connected to the rotating component. When driven by a force in the retracting direction, it drives the rotating component to rotate in that direction; when driven by a force in the unfolding direction, it rotates relative to the rotating component in the unfolding direction. When no driving force is applied, the one-way bearing is locked, and the damping assembly restricts the rotation of the workpiece support and workpiece in the unfolding direction through damping, allowing the workpiece support and workpiece to be suspended at any angle, preventing free fall and safety issues. Attached Figure Description

[0033] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0034] Figure 1 This is a schematic diagram of a folding beam provided in an embodiment of this application;

[0035] Figure 2 A schematic diagram of the unfolded state structure of a folding hinge provided in an embodiment of this application;

[0036] Figure 3 for Figure 2 Enlarged view of section A;

[0037] Figure 4 This is an exploded view of a folding hinge structure provided in an embodiment of this application;

[0038] Figure 5 A schematic diagram of the structure of a one-way bearing for a folding hinge provided in an embodiment of this application;

[0039] Figure 6A structure schematic view of a base of a folding hinge provided by an embodiment of the present application;

[0040] Figure 7 A structure schematic view of a folding state of a folding hinge provided by an embodiment of the present application;

[0041] Figure 8 Another structure schematic view of an unfolded state of a folding hinge provided by an embodiment of the present application;

[0042] Figure 9 A structure schematic view of a calibration device provided by an embodiment of the present application.

[0043] Label explanation:

[0044] 1000, calibration device; 100, folding beam; 10, first beam unit; 20, second beam unit; 30, folding hinge; 31, base; 311, fixed shaft; 3111, lower shaft; 31111, first shaft body; 31112, second flange; 3112, upper shaft; 31121, second shaft body; 31122, third flange; 3113, pin; 3114, pin hole; 3115, insertion hole; 312, bottom plate; 3121, groove; 3122, through hole; 3123, limiting part; 313, positioning support; 3131, positioning groove; 32, hinge unit; 321, one-way bearing; 3211, fixed part; 32111, retainer; 32112, needle roller; 3212, rotating part; 32121, bearing outer ring; 32122, bearing sleeve; 32123, first flange; 3213, raceway; 32131, narrow part; 32132, wide part; 322, damping assembly; 3221, friction plate; 32221, first contact surface; 3222, end cover; 32221, second contact surface; 33, workpiece support; 331, connecting part; 3311, avoiding hole; 3312, limiting fitting part; 332, workpiece mounting part; 333, positioning fitting part; 200, base; 300, main frame. DETAILED DESCRIPTION

[0045] For the convenience of understanding the utility model, the utility model will be explained in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as being "connected" to another element, it can be directly on the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" and the like used in the specification indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification are the same as those commonly understood by those skilled in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments and are not used to limit the utility model.

[0047] The main frame of the automobile calibration device is usually equipped with a cross beam for installing calibration laser instruments, calibration pattern plates and other related calibration equipment. In order to facilitate the transportation and storage of the cross beam, the related technology usually adopts a folding or split mounting and dismounting structure. Among them, the folding cross beam is connected through a folding hinge, the cross beam is composed of two cross beam monomers, the folding hinge connects the two cross beam monomers together, and aligns them in the length direction when unfolded, forming a complete cross beam. However, the folding cross beam in the related technical content occupies a large space when folded downward, and has a falling safety hazard when folded upward.

[0048] Please refer to Figure 1 , in order to solve the above technical problems, in the first aspect, the embodiment of the application provides a folding hinge 30, which is applied to components or devices that need to fold or unfold two workpieces, for example, specifically applied to the folding cross beam 100 of the automobile calibration device.

[0049] Please refer to Figures 2 to 4In some embodiments, the folding hinge 30 comprises a base 31, two hinging units 32 and two workpiece supports 33, the base 31 comprises two fixed shafts 311, each hinging unit 32 is mounted on a corresponding fixed shaft 311, and each workpiece support 33 is connected to a corresponding hinging unit 32, the two hinging units 32 can fold the two workpiece supports 33 upward and unfold them to two sides respectively by relative rotation, and each hinging unit 32 comprises a one-way bearing 321 and a damping assembly 322. The one-way bearing 321 comprises a fixed part 3211 and a rotating part 3212, the fixed part 3211 is connected to the fixed shaft 311, and the rotating part 3212 is connected to the fixed part 3211, and the rotating part 3212 can rotate relative to the fixed shaft 311 in the folding direction, and is limited in the unfolding direction.

[0050] The damping assembly 322 is in damping rotation with the rotating part 3212, the damping assembly 322 is fixedly connected to the workpiece support 33, and when the damping assembly 322 is driven by a driving force in the folding direction, it can drive the rotating part 3212 to rotate relative to the fixed part 3211 around the rotating axis in the folding direction, when the damping assembly 322 is driven by a driving force in the unfolding direction, it can rotate relative to the rotating part 3212 around the rotating axis in the unfolding direction, and when the damping assembly 322 is not driven by a driving force in the folding direction and a driving force in the unfolding direction, it can suspend the workpiece support 33 with the workpiece installed.

[0051] The working principle of the folding hinge 30 in the embodiments of the present application is as follows: the folding hinge 30 mainly comprises a base 31, two hinging units 32 and two workpiece supports 33. Each hinging unit 32 is fixed on a fixed shaft 311 of the base 31, and the workpiece support 33 is connected to the hinging unit 32 and realizes folding and unfolding actions through the hinging unit 32.

[0052] Specifically, the hinging unit 32 comprises a one-way bearing 321 and a damping assembly 322, the one-way bearing 321 is connected to the fixed shaft 311 through a fixed part 3211, the fixed part 3211 is sleeved on the fixed shaft 311, and a rotating part 3212 is connected to the fixed part 3211, so that the rotating part 3212 can freely rotate in the folding direction and is limited in the unfolding direction. The damping assembly 322 is connected to the rotating part 3212, and when it is driven by a driving force in the folding direction, it can drive the rotating part 3212 to rotate in the folding direction, and when it is driven by a driving force in the unfolding direction, it rotates relative to the rotating part 3212 in the unfolding direction. The driving force in the folding direction or the unfolding direction refers to the force transmitted to the damping assembly 322 by the workpiece support 33 or the workpiece under the action of the user. When no driving force is applied, the one-way bearing 321 is locked, and the damping assembly 322 limits the rotation of the workpiece support 33 and the workpiece in the unfolding direction through the damping effect, so that the workpiece support 33 and the workpiece can be suspended at any angle, avoiding the safety problem caused by free falling.

[0053] It can be understood that the folding hinge 30 is folded upward for storage, so that when applied to the folding beam 100, the folding beam 100 is folded for storage without space limitation. The one-way bearing 321 ensures smooth operation when the folding beam 100 is unfolded, and effectively prevents it from falling uncontrollably during unfolding. The damping assembly 322 prevents the beam from suddenly unfolding by adjusting the speed of rotation. The damping and the one-way bearing 321 of the embodiment of the application work together to ensure that the beam can be operated smoothly and safely during folding and unfolding.

[0054] In some embodiments, the rotating part 3212 includes a bearing outer ring 32121 and a bearing sleeve 32122, the bearing sleeve 32122 is sleeved on the bearing outer ring 32121 and fixedly connected with the bearing outer ring 32121, the bearing sleeve 32122 includes a damping fitting part, the damping fitting part is a rotation structure arranged circumferentially around the bearing sleeve 32122, and the damping fitting part is in damping rotation connection with the damping assembly 322.

[0055] It can be understood that the rotating part 3212 includes a bearing outer ring 32121 and a bearing sleeve 32122, the bearing sleeve 32122 is fixedly connected with the bearing outer ring 32121, and the bearing sleeve 32122 is externally provided with a damping fitting part. The damping fitting part is a rotation structure arranged circumferentially around the bearing sleeve 32122, and is in damping rotation connection with the damping assembly 322. When the workpiece support 33 is driven by a folding direction driving force, the damping fitting part and the damping assembly 322 are in contact with each other, the damping assembly 322 drives the bearing sleeve 32122 to rotate through the damping effect, and further drives the bearing outer ring 32121 to rotate, specifically, drives the bearing outer ring 32121 to rotate around the rotating axis relative to the fixed shaft 311. When the workpiece support 33 is driven by an unfolding direction driving force, the bearing outer ring 32121 is locked by the fixing part 3211 in the unfolding direction and cannot move with the damping assembly 322, and the damping assembly 322 resists the friction damping and rotates relative to the damping fitting part in the unfolding direction. In the embodiment of the application, the fixing part 3211 is configured to lock the bearing outer ring 32121 in the unfolding direction, and is fixed with the bearing outer ring 32121 and the fixed shaft 311, and does not limit the relative rotation with the fixed shaft 311 in the folding direction.

[0056] Please see Figures 2 to 5In an exemplary embodiment, the fixing member 3211 comprises a retainer 32111 and a needle roller 32112, the bearing outer ring 32121 is sleeved on the retainer 32111, the needle roller 32112 is installed on the retainer 32111, the retainer 32111 is sleeved on the fixed shaft 311, and the needle roller 32112 can abut against the bearing outer ring 32121 and the fixed shaft 311 respectively. The retainer 32111 is provided with a raceway 3213, the raceway 3213 comprises a narrow portion 32131 and a wide portion 32132 which are communicated, the needle roller 32112 can move in the wide portion 32132, and abut against the bearing outer ring 32121 and the fixed shaft 311 in the narrow portion 32131 respectively. When the workpiece support 33 is folded upwards, the bearing outer ring 32121 pushes the needle roller 32112 to the wide portion 32132 of the raceway 3213, at this time, the retainer 32111 and the needle roller 32112 rotate relative to the fixed shaft 311 along with the bearing outer ring 32121. When the workpiece support 33 is unfolded, the bearing outer ring 32121 pushes the needle roller 32112 to the narrow portion 32131 of the raceway 3213, the needle roller 32112 abuts against the bearing outer ring 32121 and the fixed shaft 311 in the narrow portion 32131 respectively, and the bearing outer ring 32121 is locked under the abutting force of the needle roller 32112, and is fixed together with the retainer 32111 and the fixed shaft 311.

[0057] In another embodiment, the fixing member 3211 comprises a retainer 32111, a needle roller 32112 and a bearing inner ring, the bearing outer ring 32121, the retainer 32111 and the bearing inner ring are coaxially arranged and are sleeved in sequence, the needle roller 32112 is installed on the retainer 32111, and the needle roller 32112 can abut against the bearing outer ring 32121 and the bearing inner ring respectively. The bearing inner ring is sleeved on the fixed shaft 311 and is fixed with the fixed shaft 311 by key connection. The retainer 32111 and the bearing outer ring 32121 are provided with the raceway 3213 together, the raceway 3213 comprises a narrow portion 32131 and a wide portion 32132 which are communicated, the needle roller 32112 can roll in the wide portion 32132, and abut against the bearing outer ring 32121 and the bearing inner ring in the narrow portion 32131 respectively. When the workpiece support 33 is folded upwards, the bearing outer ring 32121 pushes the needle roller 32112 to the wide portion 32132 of the raceway 3213, at this time, the bearing outer ring 32121 rotates relative to the bearing inner ring. When the workpiece support 33 is unfolded, the bearing outer ring 32121 pushes the needle roller 32112 to the narrow portion 32131 of the raceway 3213, the needle roller 32112 abuts against the bearing outer ring 32121 and the bearing inner ring in the narrow portion 32131 respectively, and the bearing outer ring 32121 is locked under the abutting force of the needle roller 32112, and is fixed together with the retainer 32111, the bearing inner ring and the fixed shaft 311.

[0058] In other embodiments, the one-way bearing 321 can also be a ratchet mechanism one-way bearing 321, etc., which is not limited here.

[0059] In some embodiments, the damping matching part is the outer circumferential surface of the bearing sleeve 32122, and the damping assembly 322 comprises an outer sleeve sleeved on the bearing sleeve 32122, and the inner circumferential surface of the outer sleeve is in damping contact with the outer circumferential surface of the bearing sleeve 32122.

[0060] It can be understood that the damping matching part is arranged on the outer circumferential surface of the bearing sleeve 32122. The outer sleeve is sleeved on the bearing sleeve 32122, and the inner circumferential surface of the outer sleeve is in damping contact with the outer circumferential surface of the bearing sleeve 32122. With the rotation of the rotating part 3212, the damping assembly 322 provides damping effect by contacting the outer circumferential surface of the bearing sleeve 32122. It is easier to understand that the coaxial arrangement and damping contact between the inner and outer sleeves effectively reduce the jitter during rotation, making the folding and unfolding of the cross beam more stable.

[0061] Specifically, the bearing sleeve 32122 and the outer sleeve are configured as a transition fit or an interference fit, so that a frictional damping is formed between them. The specific fitting relationship between the bearing sleeve 32122 and the outer sleeve can be customized by the designer according to engineering experience.

[0062] Please refer to Figures 2 to 4 In other embodiments, the damping matching part is a first flange 32123 arranged circumferentially on the bearing sleeve 32122, and the damping assembly 322 comprises a friction plate 3221 and an end cover 3222. The friction plate 3221 is annular and is sleeved on the fixed shaft 311, and the friction plate 3221 comprises a first contact surface 32211 in damping contact with one of the end surfaces of the first flange 32123. The friction plate 3221, the end cover 3222 and the first flange 32123 are arranged in layers, the first flange 32123 is arranged between the friction plate 3221 and the end cover 3222, the friction plate 3221, the end cover 3222 and the workpiece support 33 are fixedly connected together, the end cover 3222 covers the one-way bearing 321 and the fixed shaft 311, and the end cover 3222 comprises a second contact surface 32221 in damping contact with the other end surface of the first flange 32123.

[0063] It can be understood that the damping fitting part is the first flange 32123 on the bearing sleeve 32122, the friction plate 3221 is sleeved on the fixed shaft 311, the first contact surface 32211 of the friction plate 3221 is in contact with one of the end faces of the first flange 32123, and the first contact surface 32211 is the end face of the friction plate 3221 abutting against the first flange 32123. The end cover 3222 is a rotary body, covers the one-way bearing 321 and the fixed shaft 311, and plays a protection role on the one-way bearing 321 and the fixed shaft 311. The second contact surface 32221 of the end cover 3222 is in contact with the other end face of the first flange 32123, and the whole structure is stacked to effectively realize the damping effect.

[0064] Please refer to Figures 3 to 4 In some embodiments, the base 31 further comprises a bottom plate 312, each fixed shaft 311 is vertically connected to the bottom plate 312, and the workpiece support 33 comprises a connecting part 331 and a workpiece mounting part 332. The connecting part 331 is provided with an avoiding hole 3311, the connecting part 331 is sleeved on the fixed shaft 311 through the avoiding hole 3311, the bottom plate 312, the connecting part 331, the friction plate 3221, the first flange 32123 and the end cover 3222 are sequentially stacked, and the friction plate 3221, the end cover 3222 and the connecting part 331 are fixedly connected together. The workpiece mounting part 332 is connected with the connecting part 331, and the workpiece mounting part 332 is used for mounting a workpiece.

[0065] It can be understood that two fixed shafts 311 are arranged on the bottom plate 312, which are rotatably connected with the connecting part 331, the friction plate 3221, the end cover 3222 and the one-way bearing 321. Each connecting part 331 is sleeved on the corresponding fixed shaft 311 through the avoiding hole 3311, and the bottom plate 312, the connecting part 331, the friction plate 3221, the first flange 32123 and the end cover 3222 are connected by stacking. The avoiding hole 3311 is arranged on the connecting part 331, so that the connecting part 331 is sleeved on the fixed shaft 311, the end face of the connecting part 331 abuts against the end face of the friction plate 3221, thereby increasing the connection area of the damping assembly 322 and making the combination of the two more closely.

[0066] Exemplarily, the connecting part 331 is provided with a plurality of threaded holes, the friction plate 3221 is provided with through holes corresponding to the threaded holes, and the end cover 3222 can be provided with screw mounting holes corresponding to the through holes. The damping assembly 322 and the connecting part 331 are fixedly connected by screws, the screws are sequentially arranged in the screw mounting holes of the end cover 3222, the through holes of the friction plate 3221 and the threaded holes of the connecting part 331, and are threadedly connected with the threaded holes of the connecting part 331, so that the connecting part 331, the friction plate 3221 and the end cover 3222 are fixedly connected together.

[0067] Please refer to Figure 4 and Figure 6In some embodiments, the bottom plate 312 is provided with a sink groove 3121 and a through hole 3122, the through hole 3122 respectively communicates with the sink groove 3121 and the avoiding hole 3311, the sink groove 3121 is located at the bottom of the bottom plate 312, and the fixing shaft 311 comprises a lower shaft 3111 and an upper shaft 3112.

[0068] The lower shaft 3111 comprises a first shaft body 31111 and a second flange 31112, the second flange 31112 is circumferentially arranged around the first shaft body 31111 and connected to the first shaft body 31111, the second flange 31112 is accommodated in the sink groove 3121 and abuts against the bottom surface of the sink groove 3121, the second flange 31112 is fixedly connected to the bottom plate 312, the first shaft body 31111 is arranged through the through hole 3122, and the connecting part 331 and the friction plate 3221 are sequentially sleeved on the first shaft body 31111.

[0069] The upper shaft 3112 comprises a second shaft body 31121 and a third flange 31122, the third flange 31122 is circumferentially arranged around the second shaft body 31121 and connected to the second shaft body 31121, the first shaft body 31111 is coaxially arranged with the second shaft body 31121 and fixedly connected to the second shaft body 31121, and the one-way bearing 321 is sleeved on the second shaft body 31121 and abuts against the third flange 31122.

[0070] It can be understood that the second flange 31112 of the lower shaft 3111 is fixedly connected to each other through the stable matching connection with the sink groove 3121, which effectively reduces the unstable situation when the cross beam is folded or unfolded. Further, the fixing shaft 311 of the embodiment of the application adopts the design of the upper shaft 3112 and the lower shaft 3111, which is easy to install and disassemble, simplifies the assembly process of the folding hinge 30, reduces the production complexity, and improves the assembly efficiency.

[0071] Exemplarily, the second shaft body 31121 is provided with a plug hole 3115, the plug hole 3115 can accommodate part of the structure of the first shaft body 31111, the fixing shaft 311 further comprises a pin 3113, and the first shaft body 31111 and the second shaft body 31121 are respectively provided with a pin hole 3114. In actual installation, one part of the pin 3113 is inserted into the pin hole 3114 of one of the first shaft body 31111 and the second shaft body 31121, and the other part is inserted into the pin hole 3114 of the other when the first shaft body 31111 and the second shaft body 31121 are inserted into each other. The number and specific arrangement of the pin 3113 and the pin hole 3114 can be customized by the designer according to engineering experience.

[0072] Exemplarily, the first shaft body 31111 is provided with a plurality of threaded holes, and the second shaft body 31121 is provided with screw mounting holes which are in mutual position with the threads of the first shaft body 31111. The first shaft body 31111 and the second shaft body 31121 are fixed by screws which pass through the screw mounting holes of the second shaft body 31121 and the threaded holes of the first shaft body 31111 in sequence and are screwed with the threaded holes of the first shaft body 31111, so as to fix the first shaft body 31111 and the second shaft body 31121 with each other. The damping size of the friction plate 3221 and the end cover 3222 relative to the first flange 32123 can be adjusted by adjusting the tightening degree of the screws.

[0073] Please refer to Figure 7 In some embodiments, the connecting part 331 comprises a limiting matching part 3312 which can rotate with the end cover 3222 relative to the fixed shaft 311 around the rotation axis, and the bottom plate 312 comprises a limiting part 3123 which is arranged on the rotation stroke of the limiting part 3123 and is used for limiting the workpiece support 33 by matching with the limiting matching part 3312 when the workpiece support 33 is folded upward.

[0074] It can be understood that the connecting part 331 is provided with the limiting matching part 3312 which can rotate with the end cover 3222 during the rotation process of the end cover 3222. When the workpiece support 33 is folded upward, the limiting part 3123 contacts the limiting matching part 3312, so as to limit the rotation stroke of the workpiece support 33 and avoid the collision between the workpieces on the two workpiece supports 33.

[0075] In some embodiments, the limiting matching part 3312 is a clamping block which extends radially outward on the connecting part 331 and can rotate with the connecting part 331 relative to the fixed shaft 311 around the rotation axis, and the limiting part 3123 is a boss which is arranged on the bottom plate 312 and is arranged on the rotation stroke of the clamping block of the two workpiece supports 33 and is used for abutting against the corresponding clamping block when any workpiece support 33 is folded upward.

[0076] It can be understood that the clamping block arranged on the connecting part 331 can rotate with the workpiece support 33 and match with the boss on the bottom plate 312, so as to limit the upward folding movement of the workpiece support 33. The contact between the clamping block and the boss effectively limits the rotation stroke of the workpiece support 33 and ensures the safe folding of the workpiece support 33. Further, the embodiment of the present application only adopts one boss which is arranged on the rotation stroke of the two clamping blocks, so as to reduce the number of required components and simplify the overall structure of the base 31.

[0077] Please refer to Figures 4 to 8In some embodiments, the workpiece support 33 further comprises a positioning fitting part 333 connected to the workpiece mounting part 332, which can rotate with the workpiece mounting part 332 relative to the fixed shaft 311.

[0078] The base 31 further comprises two positioning supports 313, each of which is fixedly installed on the bottom plate 312 and arranged on the rotating stroke of the positioning fitting part 333 of the corresponding workpiece support 33, and the positioning support 313 is used to cooperate with the corresponding positioning fitting part 333 when the workpiece support 33 is fully unfolded.

[0079] It can be understood that the positioning fitting part 333 is connected to the workpiece mounting part 332 and can rotate with the workpiece mounting part 332. The positioning support 313 on the base 31 cooperates with the positioning fitting part 333 of the workpiece support 33, and when the workpiece support 33 is fully unfolded, the positioning support 313 realizes stable support of the workpiece support 33 through cooperation with the positioning fitting part 333. The positioning support 313 provides effective support when the workpiece support 33 is fully unfolded, preventing the workpiece support 33 from falling or tilting.

[0080] In some embodiments, the positioning fitting part 333 is a protrusion arranged on the edge of the workpiece mounting part 332 and extending outward, and the positioning support 313 is installed on the edge of the bottom plate 312 and is provided with a positioning groove 3131. When the workpiece support 33 is fully unfolded, the protrusion is aligned with the positioning groove 3131 of the positioning support 313 and is accommodated in the positioning groove 3131, and at the same time, the positioning support 313 also abuts against the workpiece mounting part 332 to assist in supporting the workpiece mounting part 332.

[0081] In some embodiments, the workpiece support 33 is substantially L-shaped, and the two workpiece supports 33 are symmetrically arranged. The connecting part 331 and the workpiece mounting part 332 are respectively two perpendicular parts of the L-shaped structure, so that the workpiece mounting parts 332 can be aligned and combined together when the two workpiece supports 33 are unfolded. The workpiece support 33 is a plate member, and the connecting part 331, the workpiece mounting part 332, and the positioning fitting part 333 are integrally formed. The workpiece mounting part 332 is substantially rectangular. Exemplarily, the workpiece mounting part 332 is provided with a mounting groove for mounting a beam unit. When the two workpiece supports 33 are unfolded to two sides, the mounting grooves of the two workpiece supports 33 are aligned with each other in the length direction, so that the beam units on the two workpiece supports 33 are aligned with each other in the length direction when the beam units are mounted. The part of the connecting part 331 away from the workpiece mounting part 332 is substantially arc-shaped to ensure stability when rotating around the fixed shaft 311. In an embodiment, a gasket can be arranged between the connecting part 331 and the bottom plate 312 to reduce friction therebetween.

[0082] Please refer to Figure 1 and Figure 2 In the second aspect, the embodiments of the present application further provide a folding crossbeam 100, which is applied to components or devices requiring crossbeams, for example, applied to automotive calibration devices.

[0083] In some embodiments, the folding crossbeam 100 comprises a first crossbeam unit 10, a second crossbeam unit 20, and the folding hinge 30 described above. One of the two workpiece supports 33 is installed with the first crossbeam unit 10, and the other is installed with the second crossbeam unit 20. The folding hinge 30 can make the first crossbeam unit 10 and the second crossbeam unit 20 close to each other and align with each other in the length direction when the two workpiece supports 33 are unfolded to two sides, and make the first crossbeam unit 10 and the second crossbeam unit 20 fold close to each other when the two workpiece supports 33 are folded together upward.

[0084] It can be understood that the folding crossbeam 100 is composed of the first crossbeam unit 10, the second crossbeam unit 20, and the folding hinge 30. The folding hinge 30 can make the two crossbeam units close to and align with each other when the workpiece supports 33 are unfolded, and make the crossbeam units fold close to each other when the workpiece supports 33 are folded, forming a compact structure. The folding crossbeam 100 makes the crossbeam units tightly fold through the folding hinge 30, greatly reducing the space requirement for storage and transportation. When the folding crossbeam 100 is unfolded, the crossbeam units can be stably aligned, ensuring the height consistency of the calibration products hung on the folding crossbeam 100.

[0085] Please refer to Figure 1 and Figure 9 In the third aspect, the embodiments of the present application provide a calibration device, which comprises a base, a main frame, and the folding crossbeam of the above embodiments. The main frame is vertically arranged on the base, and the folding crossbeam is installed on the main frame.

[0086] It can be understood that the calibration device 1000 is fixed to the ground through the base 200, and the main frame 300 is vertically connected to the base 200, forming a stable support structure. The folding crossbeam 100 is installed on the main frame 300 through bolts or quick-release mechanisms, and the base 31 of the folding hinge 30 cooperates with the mounting surface of the main frame 300. When the calibration device 1000 is in a working state, the operator applies an external force in the unfolding direction to the workpiece support 33, and the damping assembly 322 overcomes the frictional resistance to drive the rotating member 3212 to rotate, while the one-way bearing 321 is locked in the unfolding direction, so that the first crossbeam unit 10 and the second crossbeam unit 20 are accurately butt-jointed in the length direction, forming a continuous horizontal crossbeam, which can be used to install calibration laser instruments, visual cameras, or calibration pattern plates, and other devices. When the device needs to be stored, the operator pushes the workpiece support 33 upward, and the damping assembly 322 drives the one-way bearing 321 to freely rotate in the folding direction, so that the crossbeam units are synchronously folded upward to the vertical state.

[0087] In a fourth aspect, the embodiments of the present application also provide a calibration system, which comprises the calibration device 1000 in the above embodiments and a diagnostic instrument, and the diagnostic instrument is in communication connection with the calibration device 1000.

[0088] The diagnostic instrument can be a tablet diagnostic instrument, so as to facilitate carrying and transportation.

[0089] Optionally, the calibration system can further comprise calibration elements such as targets, mirrors, lasers, etc., which can be installed on the cross beam.

[0090] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of simplicity; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A foldable hinge, characterized in that, The base includes two fixed shafts, each of the two hinged units is mounted on a corresponding fixed shaft, and each of the two workpiece supports is connected to a corresponding hinged unit, the two hinged units can make the two workpiece supports fold upward and respectively expand to two sides through relative rotation, each of the two hinged units includes: a one-way bearing, the one-way bearing includes a fixed part and a rotating part, the fixed part is connected to the fixed shaft, the rotating part is connected to the fixed part, the rotating part can rotate relative to the fixed shaft in a folding direction about a rotating axis, and is limited to rotate in an expanding direction; and a damping assembly, the damping assembly is dampingly connected to the rotating part, the damping assembly is fixedly connected to the workpiece support, when the damping assembly is driven by a driving force in the folding direction, the damping assembly can drive the rotating part to rotate relative to the fixed part in the folding direction about the rotating axis, when the damping assembly is driven by a driving force in the expanding direction, the damping assembly can rotate relative to the rotating part in the expanding direction about the rotating axis, and when the damping assembly is not driven by the driving force in the folding direction and the driving force in the expanding direction, the damping assembly can suspend the workpiece support on which the workpiece is mounted.

2. The foldable hinge according to claim 1, characterized in that The rotating part includes a bearing outer ring and a bearing sleeve, the bearing sleeve is sleeved on the bearing outer ring and fixedly connected to the bearing outer ring, the bearing sleeve includes a damping fitting part, the damping fitting part is a rotation structure arranged circumferentially around the bearing sleeve, and the damping fitting part is dampingly connected to the damping assembly.

3. The foldable hinge according to claim 2, wherein The damping fitting part is a first flange arranged circumferentially on the bearing sleeve, the damping assembly includes: a friction plate, the friction plate is annular and sleeved on the fixed shaft, the friction plate includes a first contact surface, and the first contact surface dampingly contacts one end surface of the first flange; and an end cover, the friction plate, the end cover and the first flange are arranged in layers, the first flange is arranged between the friction plate and the end cover, the friction plate, the end cover and the workpiece support are fixedly connected together, the end cover covers the one-way bearing and the fixed shaft, and the end cover includes a second contact surface, and the second contact surface dampingly contacts another end surface of the first flange.

4. The foldable hinge according to claim 3, wherein The base further includes a bottom plate, each of the fixed shafts is vertically connected to the bottom plate, and the workpiece support includes: a connecting part, the connecting part is provided with a avoiding hole, the connecting part is sleeved on the fixed shaft through the avoiding hole, the bottom plate, the connecting part, the friction plate, the first flange and the end cover are arranged in layers in sequence, and the friction plate, the end cover and the connecting part are fixedly connected together; and a workpiece mounting part, the workpiece mounting part is connected to the connecting part, and the workpiece mounting part is used for mounting the workpiece.

5. The foldable hinge according to claim 4, characterized in that The bottom plate is provided with a sink and a through hole, the through hole respectively communicates the sink and the avoiding hole, the sink is located at the bottom of the bottom plate, and the fixed shaft includes: A lower shaft, the lower shaft comprising a first shaft body and a second flange, the second flange being circumferentially arranged around and connected to the first shaft body, the second flange being accommodated in the sink and abutting the bottom surface of the sink, the second flange being fixedly connected to the bottom plate, the first shaft body being arranged through the through hole, the connecting part and the friction plate being sequentially arranged on the first shaft body; An upper shaft, the upper shaft comprising a second shaft body and a third flange, the third flange being circumferentially arranged around and connected to the second shaft body, the first shaft body being coaxially arranged with and fixedly connected to the second shaft body, the one-way bearing being arranged on the second shaft body and abutting the third flange.

6. The foldable hinge of claim 4, wherein The connecting part comprises a limiting fitting part, the limiting fitting part being capable of rotating with the end cover relative to the fixed shaft about the rotation axis, the bottom plate comprising a limiting part, the limiting part being arranged on the rotation stroke of the limiting part, the limiting part being used for being connected to the limiting fitting part when the workpiece support is folded upward, so as to limit the workpiece support.

7. The foldable hinge of claim 4, wherein The workpiece support further comprises a positioning fitting part, the positioning fitting part being connected to the workpiece mounting part, the positioning fitting part being capable of rotating with the workpiece mounting part relative to the fixed shaft about the rotation axis; The base further comprises two positioning supports, each of the positioning supports being fixedly installed on the bottom plate, each of the positioning supports being arranged on the rotation stroke of the positioning fitting part of the corresponding workpiece support, the positioning support being used for being connected to the corresponding positioning fitting part when the workpiece support is completely unfolded.

8. A folding cross member characterized by, Comprise: A first cross beam unit; A second cross beam unit; and The folding hinge of any one of claims 1-7, one of the two workpiece supports is installed with the first cross beam unit, and the other is installed with the second cross beam unit, the folding hinge being capable of causing the first cross beam unit and the second cross beam unit to approach each other and align with each other in the length direction when the two workpiece supports are unfolded to two sides respectively, and causing the first cross beam unit and the second cross beam unit to be folded and close to each other when the two workpiece supports are folded upward together. Comprise:

9. A calibration apparatus characterized by comprising: A base; A main frame, the main frame being vertically arranged on the base; And The folding cross beam of claim 8, the folding cross beam being installed on the main frame. Comprise:

10. A calibration system characterized by, The calibration device of claim 9; And A diagnostic instrument, the diagnostic instrument being communicatively connected to the calibration device. ​

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