CN111721345B

CN111721345B - Calibration system and calibration support thereof

Info

Publication number: CN111721345B
Application number: CN201910214372.7A
Authority: CN
Inventors: 赖毕望
Original assignee: Autel Intelligent Technology Corp Ltd
Current assignee: Autel Intelligent Technology Corp Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2024-05-07
Anticipated expiration: 2039-03-20
Also published as: CN111721345A

Abstract

The invention relates to the field of vehicle calibration, and provides a calibration system and a calibration support thereof. The unidirectional rotation assembly can rotate towards a first rotation direction; the spring is tightly held by the unidirectional rotating component; the first revolving body extrudes the arming spring towards the first revolving body to enable the unidirectional rotation assembly to rotate together with the first revolving body, and the first revolving body extrudes the arming spring towards the second revolving direction to enable the arming spring to loosen the unidirectional rotation assembly and rotate together with the first revolving body; the second revolving body can push the first revolving body towards the first rotating direction at the first position, can push the second revolving body towards the second rotating direction at the second position, and the embracing spring can prop against the second revolving body between the first position and the second position to prevent the second revolving body from rotating towards the second rotating direction; the second revolving body can drive the movable upright rod to ascend relative to the fixed upright rod through the transmission assembly in the first revolving direction.

Description

Calibration system and calibration support thereof

Technical Field

The invention relates to the technical field of vehicle maintenance and equipment calibration, in particular to a calibration system and a calibration bracket thereof.

Background

The advanced driving assistance system (ADVANCED DRIVER ASSISTANT SYSTEM), abbreviated as ADAS, is an active safety technique for collecting environmental data inside and outside a vehicle at a first time by using various sensors mounted on the vehicle, and performing technical processes such as identification, detection and tracking of static and dynamic objects, so that a driver can perceive a possible danger at the fastest time to draw attention and improve safety. The sensors used by ADAS mainly include cameras, radar, laser, ultrasound, etc., and can detect light, heat, pressure, or other variables used to monitor the state of an automobile, typically located on front and rear bumpers, side mirrors, steering column interiors, or windshields of the vehicle. In the use process of the vehicle, vibration, collision, environmental temperature and humidity and the like can change the physical installation state of the sensor, so that calibration or calibration is required at an irregular period.

When the sensor is calibrated or calibrated, a calibration element is usually mounted on a calibration support to calibrate or calibrate the sensor on the vehicle. However, most calibration supports at present have large volume, large occupied area, complex assembly and difficult moving. In particular, the vertical bars of the calibration stand, which are at least 1.7 meters in height, are usually up to 2.0 meters in height, and are very difficult to handle. At present, no calibration support is available, so that the sensor calibration device can be conveniently carried and simultaneously can meet the requirement of accurate control of the height of a calibration target required by sensor calibration.

Disclosure of Invention

The embodiment of the invention aims to provide a calibration system and a calibration bracket thereof, which can be conveniently carried and can meet the accurate control of the height required by the calibration of a sensor.

The technical scheme adopted by the embodiment of the invention for solving the technical problems is as follows:

In one aspect, a calibration support is provided, including a base, a vertical frame assembly and a beam assembly, wherein the vertical frame assembly includes a fixed vertical rod, a movable vertical rod and a driving mechanism, one end of the fixed vertical rod is fixedly installed on the base, the movable vertical rod is installed on the fixed vertical rod, the movable vertical rod can lift relative to the fixed vertical rod, the beam assembly is installed on the movable vertical rod, and the beam assembly is used for mounting a calibration element; the driving mechanism includes: the unidirectional rotation assembly comprises a fixed support and a rotation piece, the fixed support is fixedly arranged on the fixed vertical rod, the rotation piece is arranged on the fixed support, and the rotation piece can only rotate around the preset axis and towards a first rotation direction relative to the fixed support; the spring is sleeved and hugs the rotating piece; the first revolving body is arranged on the fixed support, the first revolving body can rotate around the preset axis relative to the fixed support, the first revolving body is used for extruding a embracing spring, the embracing spring drives the rotating piece to rotate when the first revolving body extrudes the embracing spring towards the first rotating direction, and the embracing spring loosens the rotating piece and rotates relative to the rotating piece when the first revolving body extrudes the embracing spring towards the second rotating direction, and the second rotating direction is opposite to the first rotating direction; the second revolving body is arranged on the first revolving body, the second revolving body can rotate around the preset axis relative to the first revolving body between a first position and a second position, the second position is arranged on one side of the first position in the first rotating direction, the second revolving body is used for pushing the first revolving body to rotate, when the second revolving body rotates to the first position, the second revolving body can push the first revolving body in the first rotating direction, when the second revolving body rotates to the second position, the second revolving body can push the first revolving body in the second rotating direction, when the second revolving body rotates to the first position and the second position, and when the second revolving body rotates to the second rotating direction, the holding spring abuts against the second revolving body to block the second revolving body from continuing to rotate; and the transmission assembly is connected with the second revolving body and the movable vertical rod, when the second revolving body rotates towards the first rotating direction, the second revolving body drives the movable vertical rod to ascend through the transmission assembly, and when the first revolving body rotates towards the second rotating direction, the second revolving body drives the movable vertical rod to descend through the transmission assembly.

In some embodiments, the wrap spring includes a helical portion and an abutment portion; the spiral part is sleeved and tightly held on the rotating piece; the abutting part is connected with and protrudes out of the spiral part, and the first revolving body is used for extruding the abutting part; when the first revolving body presses the abutting part towards the first rotating direction, the spiral part drives the rotating piece to rotate, and when the first revolving body presses the abutting part towards the second rotating direction, the spiral part loosens the rotating piece and rotates relative to the rotating piece; when the second revolving body rotates between the first position and the second position, and the second revolving body rotates in the second rotation direction, the abutting portion abuts against the second revolving body to prevent the second revolving body from continuing to rotate.

In some embodiments, the abutment comprises a first abutment and a second abutment; the first abutting part and the second abutting part are connected and protrude out of the spiral part, and the first revolving body is used for extruding the first abutting part or the second abutting part; when the first revolving body presses the first abutting part towards the first rotating direction, the spiral part drives the rotating piece to rotate, and when the first revolving body presses the second abutting part towards the second rotating direction, the spiral part loosens the rotating piece and rotates relative to the rotating piece; when the second revolving body rotates between the first position and the second revolving body rotates in the second rotation direction, the first abutting portion abuts against the second revolving body and prevents the second revolving body from continuing to rotate.

In some embodiments, the second abutment is located on a side of the first abutment in the first rotational direction.

In some embodiments, the first swivel includes a first swivel body and a stop; the first rotary main body is arranged on the fixed support and can rotate around the preset axis relative to the fixed support; the stop part is arranged on one surface of the first rotary main body facing the arming spring; when the stop part presses the first abutting part towards the first rotating direction, the spiral part drives the rotating part to rotate, and when the stop part presses the second abutting part towards the second rotating direction, the spiral part loosens the rotating part and rotates relative to the rotating part.

In some embodiments, the stop comprises a first stop and a second stop; the first stop part and the second stop part are arranged on one surface of the first rotary main body facing the arming spring, the first stop part is used for extruding the first abutting part, and the second stop part is used for extruding the second abutting part; when the first stop part presses the first abutting part towards the first rotating direction, the spiral part drives the rotating piece to rotate, and when the second stop part presses the second abutting part towards the second rotating direction, the spiral part loosens the rotating piece and rotates relative to the rotating piece.

In some embodiments, the first abutment and the second abutment are both located between the first stop and the second stop in the first rotational direction, and the first stop is closer to the first abutment and the second stop is closer to the second abutment.

In some embodiments, the second swivel includes a second swivel body and a stop bar; the second rotary body is arranged on the first rotary body and can rotate around the preset axis relative to the first rotary body; the limiting rod is arranged on one surface of the second rotary body, which faces the first rotary body, and is positioned between the first abutting part and the second abutting part in the first rotary direction and used for pushing the first rotary body to rotate; when the second revolving body rotates to the first position, the limiting rod can push the first revolving body towards the first rotating direction, when the second revolving body rotates to the second position, the limiting rod can push the first revolving body towards the second rotating direction, when the second revolving body rotates to a position between the first position and the second position, and when the second revolving body rotates towards the second rotating direction, the first abutting part abuts against the limiting rod to prevent the second revolving body from continuing to rotate.

In some embodiments, the first rotator is provided with an arc-shaped notch, the arc-shaped notch has a first end and a second end, and the stop lever passes through the arc-shaped notch; the stop lever is located at the first end when the second swing body is rotated to the first position, at the second end when the second swing body is rotated to the second position, and between the first end and the second end when the second swing body is rotated to between the first position and the second position.

In some embodiments, the second end is located on a side of the first end toward the first rotational direction.

In some embodiments, the transmission assembly comprises a traction rope; one end of the traction rope is wound on the second revolving body, and the other end of the traction rope is fixedly arranged on the movable vertical rod.

In some embodiments, the drive assembly further comprises a pulley;

The pulley is installed in fixed pole setting, the other end of haulage rope is via pulley fixed mounting in fixed pole setting.

In some embodiments, the second rotation body includes a rope shaft body and a baffle; one end of the traction rope is wound on the rope shaft body, and the rope shaft body can rotate around the preset axis relative to the first revolving body; the baffle is arranged at the tail end of the rope shaft body, and the cross section size of the baffle is larger than the transverse axis surface size of the rope shaft body.

In some embodiments, the baffle comprises a first baffle and a second baffle; the first baffle is arranged at one end of the rope shaft body, which is close to the first revolving body, the second baffle is arranged at the other end of the rope shaft body, which is far away from the first revolving body, and the cross section size of the first baffle and the cross section size of the second baffle are both larger than the cross section size of the rope shaft body.

In some embodiments, the unidirectional rotation assembly is a ratchet assembly; the rotating piece is an internal engaged ratchet wheel.

In some embodiments, the movable pole is sleeved on the fixed pole.

In some embodiments, the drive mechanism further comprises a hand wheel; the hand wheel is fixedly arranged on the second revolving body, and the hand wheel and the second revolving body can rotate together around the preset axis relative to the first revolving body.

In another aspect, there is provided a calibration system comprising a calibration element and a calibration support as described above, the calibration element being mountable on the calibration support.

Compared with the prior art, in the calibration support of this embodiment, through first solid of revolution rotation, accessible drive mechanism drives and removes the pole setting and go up and down for fixed pole setting, has reduced the calibration support height obviously, has made things convenient for the transport of calibration support, can also realize the accurate control to the calibration target height simultaneously.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a perspective view of a calibration stand according to an embodiment of the present invention, where the calibration stand mounts a multi-line laser;

FIG. 2 is another angular perspective view of the calibration support of FIG. 1;

FIG. 3 is a perspective view of the calibration stand of FIG. 1 with the cross-beam assembly of the calibration stand in a collapsed condition;

FIG. 4 is a perspective view of a riser assembly of the calibration stand of FIG. 1;

FIG. 5 is an enlarged view of a portion of the riser assembly shown in FIG. 4;

FIG. 6 is an exploded view of the drive mechanism of the stand assembly shown in FIG. 5;

FIG. 7 is a perspective view of the drive mechanism shown in FIG. 6 in a first state;

FIG. 8 is a perspective view of the drive mechanism shown in FIG. 6 in a second state;

FIG. 9 is a perspective view of the drive mechanism shown in FIG. 6 in a third state;

FIG. 10 is a perspective view of a riser assembly shown according to some embodiments;

FIG. 11 is an exploded view of the riser assembly shown in FIG. 10;

FIG. 12 is a perspective view of a cross-beam assembly of the calibration stand of FIG. 1;

FIG. 13 is a cross-sectional view of the beam assembly shown in FIG. 12;

FIG. 14 is an exploded view of the beam assembly shown in FIG. 12;

FIG. 15 is an enlarged view of a portion A of FIG. 12;

FIG. 16 is an exploded view of the adjustment mechanism of the beam assembly shown in FIG. 12;

FIG. 17 is an exploded view of another angle of the adjustment mechanism shown in FIG. 16;

FIG. 18 is a perspective view of the articulation mechanism of the cross beam assembly shown in FIG. 12;

FIG. 19 is another angular perspective view of the articulating mechanism of FIG. 18;

FIG. 20 is a cross-sectional view of the articulating mechanism of FIG. 18;

FIG. 21 is a perspective view of an articulation mechanism shown in accordance with some embodiments;

FIG. 22 is a cross-sectional view of the articulating mechanism of FIG. 21;

FIG. 23 is a schematic view of first and second snap members overlapping each other, as shown in accordance with some embodiments;

FIG. 24 is a perspective view of a calibration system including a calibration support and a calibration element, the calibration element being a mirror mounted to the calibration support, according to another embodiment;

FIG. 25 is a perspective view of the calibration system shown in FIG. 24 with the mirror replaced with a pattern plate that is mounted to the calibration frame.

Detailed Description

In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the invention described below can be combined with one another as long as they do not conflict with one another.

Referring to fig. 1, fig. 2 and fig. 3, the calibration stand 100 according to an embodiment of the present invention includes a base 10, a stand assembly 20 and a beam assembly 30, wherein the stand assembly 20 is fixedly connected to the base 10, the beam assembly 30 includes a first beam portion 32, a second beam portion 34 and a connecting portion 36, the connecting portion 36 is mounted on the stand assembly 20, one end of the connecting portion 36 is hinged to the first beam portion 32, and the other end of the connecting portion 36 is hinged to the second beam portion 34. The first beam portion 32 and the second beam portion 34 may be turned toward each other with respect to the connection portion 36 to fold the beam assembly 30, and the first beam portion 32 and the second beam portion 34 may be turned away from each other with respect to the connection portion 36 to unfold the beam assembly 30.

The term "mounted" includes fixed mounting such as welded mounting, and also includes removable mounting.

The beam assembly 30 may be used to mount calibration components, such as a multi-line laser 200, calibration targets, radar reflection or absorption devices, etc., to calibrate the vehicle-mounted auxiliary steering system.

In the calibration stand 100 of the present embodiment, the first beam portion 32 and the second beam portion 34 are respectively pivotable with respect to the connection portion 36. So that the beam assembly 30 is folded, the volume of the calibration stand 100 can be reduced for easy shipment.

The first beam portion 32, the second beam portion 34 and the connecting portion 36 constitute a beam.

Optionally, the beam assembly is mounted on the top surface of the movable upright. This makes the center of gravity of the beam assembly more closely approach the center of gravity of the pole than conventional calibration frames, can increase the stability of the calibration frame, and can use a smaller foot.

Alternatively, the first beam portion 32 and the second beam portion 34 may be turned in opposite directions with respect to the connecting portion 36, for example, they may be folded down together or folded up, forward, and backward together. Alternatively, when the first beam portion 32 and the second beam portion 34 are folded downward, the length of the connection portion 36 may be relatively short, and the first beam portion 32 and the second beam portion 34 may be in a sagging state, so that the beam assembly 30 may not be removed from the stand assembly 20, the occupied space of the calibration stand 100 may be significantly reduced, and the vehicle may be conveniently used for carrying. When the first beam portion 32 and the second beam portion 34 are folded up, forward and backward, means may be provided to rotate the beams so that the final folding direction of the first beam portion 32 and the second beam portion 34 is downward, or both may be in a sagging state; alternatively, the length of the connecting portion 36 may be made relatively long, and the folded first beam portion 32 and second beam portion 34 may be placed in close proximity to the connecting portion 36 and secured to the connecting portion 36 by releasable securing means. In the latter case, the cross member assembly 30 may be removed from the stand assembly 20 and carried to the desired location for use and then mounted to the stand assembly 20 in order to further reduce the space occupied by the calibration stand 100.

Those skilled in the art will appreciate that the manner in which the beam assembly 30 is folded is not limited to that described above. For example, the cross beam may be folded to two ends, where there is no connection 36; the cross beam may also be folded into four or more sections. However, three sections are preferred, since this allows for a fracture-free middle section of the beam, and only one fastening member can be used at the middle section to secure the beam to the pole in a stable and balanced manner.

The base 10 includes a base body 12, rollers 14, a height adjuster 16, and a tab 18.

The base body 12 is in a triangular claw shape, and comprises three claw parts, wherein the three claw parts respectively extend along three different directions. The base body 12 may be made of a metallic material.

The number of the rollers 14 may be three, and each roller 14 is mounted at the end of a corresponding claw portion, so as to facilitate moving the base body 12. In this embodiment, the roller 14 is a universal moving roller, so that the base body 12 can move freely back and forth and left and right.

The height adjusting member 16 is mounted to the base body 12 for adjusting the height of the base body 12. In this embodiment, the height adjusting members 16 are adjusting knobs, the number of the height adjusting members is three, and at least one section of screw rod is arranged below the knobs, and the screw rod is matched with the screw thread of the through hole at the base, so that the height adjustment can be realized. Each of the height adjusting members 16 is mounted to a corresponding one of the claw portions and is adjacent to a corresponding one of the rollers 14, and the three height adjusting members 16 are distributed in a regular triangle.

The pull ring 18 may be mounted to an upper surface of one of the claw portions for facilitating pulling of the indexing support 100.

It will be appreciated that in some other embodiments, the shape of the base body 12 may vary according to actual needs, and is not limited to a triangular claw shape, for example, the base body 12 may be rectangular or circular; the number of the rollers 14 and the height adjusting members 16 may be increased or decreased according to actual needs, for example, for the triangular claw-shaped base body 12, the number of the height adjusting members may be two, and then a leg with a fixed height may be matched to adjust the angle of the base body 12.

Referring to fig. 4 and 5, the stand assembly 20 may include a fixed upright 22, a movable upright 24 and a driving mechanism 26, the movable upright 24 is sleeved in the fixed upright 22, the movable upright 24 is movable relative to the fixed upright 22 along the length direction of the fixed upright 22, and the driving mechanism 26 is mounted on the fixed upright 22 and is used for driving the movable upright 24 to move relative to the fixed upright 22 along the length direction of the fixed upright 22. By using the manner of sleeving and connecting the movable upright rod 24 and the fixed upright rod 22, the height of the upright frame assembly 20 can be reduced to be close to half of the original height, and the upright frame assembly 20 can be very suitable for being placed in a rear trunk of a vehicle such as an automobile to be carried by matching with the folding of the cross rod assembly 30.

It will be appreciated that a fixed pole may be used as the inner pole and a movable pole as the outer pole, with a drive mechanism 26 mounted to the fixed pole 22 for driving the movable pole 24 to move relative to the fixed pole 22 along the length of the fixed pole 22.

Alternatively, the fixed upright 22 and the movable upright 24 are square, respectively, and the movable upright 24 is tightly sleeved in the fixed upright 22, so that the movable upright 24 can only move relative to the fixed upright 22 along the length direction of the fixed upright 22, and the movable upright 24 can be prevented from moving relative to the fixed upright 22 in other directions. This configuration is important for the foldable nature of the calibration stand 100 because it is generally desirable to utilize a fixed relative positional relationship between the components of the calibration stand 100 during calibration, for example, it is possible to fix a laser to the outer surface of the stationary upright 22 and use the laser to position the central axis of the vehicle to determine the relative position of the target carried on the beam assembly 30 and the vehicle. Therefore, if the relative positions of the components are slightly changed, the calibration accuracy is affected, or an additional fine adjustment mechanism needs to be added to compensate. If the relative position between the components varies greatly, it may also cause the additional fine adjustment mechanism to fail. Thus, relative movement, such as relative rotation, between the moving pole 24 and the fixed pole 22, other than in the length direction, is precluded in a telescoping fashion. A simple way is to have the movable pole 24 and the fixed pole 22 in the same direction, so that only a relative movement in the longitudinal direction can be ensured between the two.

It will be appreciated that in some other embodiments, the fixed pole 22 and the movable pole 24 may be other shaped tubing, such as tubing having mating polygonal cross sections, such that the movable pole 24 is movable relative to the fixed pole 22 only along the length of the fixed pole 22 and such that the movable pole 24 is prevented from moving in other directions relative to the fixed pole 22. The "interfit" herein does not necessarily require that the cross sections of the fixed pole 22 and the movable pole 24 be identical, for example, the cross section of the fixed pole 22 disposed outside may be hexagonal, the cross section of the movable pole 24 disposed inside may be quadrangular in contact with the hexagonal, and the effect of allowing the movable pole 24 to move only in the longitudinal direction of the fixed pole 22 with respect to the fixed pole 22 may be achieved. The cross sections of the fixed upright 22 and the movable upright 24 can also be cylindrical tubes of mutually matched oval shapes, and the oval cross section can also limit the relative rotation between the two to a certain extent.

The fixed upright 22 and the movable upright 24 may be cylindrical pipes with circular cross sections, and the fixed upright 22 may be prevented from rotating relative to the movable upright 24 by a guiding mechanism for guiding the movable upright 24 to stably move relative to the fixed upright 22, or a mechanism for detecting and adjusting the movement of the fixed upright 22 relative to the movable upright 24 in the length direction may be added at other parts of the calibration stand 100. A simple guide mechanism is a guide rail and a slider device matched with the guide rail, wherein the guide rail is arranged on one of the surfaces of the fixed upright 22 and the movable upright 24, and the slider device such as a lug, a plastic adhesive tape, a roller, a ball, a gear and the like is arranged on the other one, so that the slider device is limited to move on the guide rail, and the relative movement between the two uprights only along the length direction can be ensured. The guide rail can be a groove, a linear bulge, a rack and the like additionally arranged on the wall of the vertical rod, or can be a groove, a linear bulge, a groove and the like formed between two linear bulges and the like formed by the wall of the vertical rod, namely, the vertical rod uses a special-shaped wall, and the wall is provided with a groove, a linear bulge and the like which can be used as the guide rail. Also, the slider means may be an additional component provided on the wall of the pole or may be a raised structure formed by the pole wall itself without providing an additional component at the pole wall. In addition, the rack and the like are engaged to realize a transmission mechanism, and the mechanism has a guiding function, and the specification also includes the guide rail. The guiding effect can also be achieved by a gear and rack transmission as described in the following embodiments. Alternatively, the rack may be disposed within the recessed guide rail.

It will be appreciated that the positions of the guide rail and the slider means may be interchanged, either with the guide rail being provided on the moving upright and the slider means being provided on the fixed upright.

It will be appreciated that the guide mechanism is not limited to fixed uprights 22 and moving uprights 24 having circular cross-sections, and that other cross-sectional shapes of fixed uprights 22 and moving uprights 24 may be used to enhance the guiding action and achieve more stable or less friction relative movement. For non-circular cross-sectional shapes, instead of using a guide rail, only a linear motion device may be used to obtain a more stable or less friction relative motion, where the non-circular outer pole itself serves as a guide.

Referring to fig. 5-8, the driving mechanism 26 includes a transmission assembly 260, a unidirectional rotation assembly 262, a suspension spring 264, a first rotator 266, a second rotator 268, and a handle 269. The unidirectional rotation assembly 262 includes a fixed support 2620 and a rotation member 2622.

The fixed support 2620 is fixedly mounted to the fixed upright 22, the rotating member 2622 is mounted to the fixed support 2620, and the rotating member 2622 can rotate relative to the fixed support 2620 only about the preset axis O and in the first rotation direction S1.

The clasping spring 264 is sleeved and clasped to the rotating member 2622.

The first rotator 266 is mounted on the fixed support 2620, the first rotator 266 may rotate around the preset axis O relative to the fixed support 2620, the first rotator 266 is configured to press the arming spring 264, as shown in fig. 7, when the first rotator 266 presses the arming spring 264 in the first rotation direction S1, the arming spring 264 drives the rotating member 2622 to rotate, as shown in fig. 8, when the first rotator 266 presses the arming spring 264 in the second rotation direction S2, the arming spring 264 releases the rotating member 2622 and rotates relative to the rotating member 2622, and the second rotation direction S2 is opposite to the first rotation direction S1.

The second rotator 268 is mounted to the first rotator 266, the second rotator 268 is rotatable about the preset axis O with respect to the first rotator 266 between a first position and a second position, the second position is located at one side of the first position in the first rotation direction S1, the second rotator 268 is configured to urge the first rotator 266 to rotate, when the second rotator 268 rotates to the first position, the second rotator 268 is configured to urge the first rotator 266 in the first rotation direction S1, and when the second rotator 268 rotates to the second position, the second rotator 268 is configured to urge the first rotator 266 in the second rotation direction S2, as shown in fig. 9, when the second rotator 268 rotates to between the first position and the second position, and when the second rotator 268 rotates in the second rotation direction S2, the wrap spring is configured to urge the second rotator 268 to block the second rotator 268 from continuing.

The transmission assembly 260 is connected to the second revolving body 268 and the movable upright 24, when the second revolving body 268 rotates in the first rotation direction S1, the second revolving body 268 drives the movable upright 24 to rise through the transmission assembly 260, and when the first revolving body 266 rotates in the second rotation direction S2, the second revolving body 268 drives the movable upright 24 to fall through the transmission assembly 260.

The handle 269 is fixedly mounted to the second rotator 268, and the hand wheel 269 and the second rotator 268 are rotatable together about the predetermined axis O with respect to the first rotator 266.

It should be noted that, in the first aspect, the second revolving body 268 located at the first position rotates in the first revolving direction S1, the second revolving body 268 pushes the first revolving body 266 to rotate, the first revolving body 266 presses the holding spring 264, the holding spring 264 holds the rotating member 2622 tightly, so that the second revolving body 268, the first revolving body 266, the holding spring 264 and the rotating member 2622 rotate together relative to the fixed support 2620, and the second revolving body 268 rotates in the first revolving direction S1 to drive the movable upright 24 to rise through the transmission assembly 260. In the second aspect, the second revolving body 268 located at the second position rotates in the second rotation direction S2, the second revolving body 268 pushes the first revolving body 266 to rotate, the first revolving body 266 presses the embracing spring 264, the embracing spring 264 releases the rotating member 2622, so that the second revolving body 268, the first revolving body 266 and the embracing spring 264 rotate together relative to the rotating member 2620, and the second revolving body 268 rotates in the second rotation direction S2 to drive the movable upright 24 to descend through the transmission assembly 260. In the last aspect, when the movable upright 24 has a descending trend, the movable upright 24 pulls the second revolving body 268 through the transmission assembly 260, so that the second revolving body 268 has a rotating trend towards the second rotating direction S2, and the second revolving body 268 is propped against by the embracing spring 264, so as to prevent the movable upright 24 from falling down. In summary, the driving mechanism 26 can drive the movable upright 24 to lift and prevent the movable upright 24 from falling down. The hand wheel 269 may be replaced with a motor, depending on the situation. The beam for mounting the calibration element can be prevented from falling easily by the holding spring 264 supporting against the second revolving body 268.

The transmission assembly 260 includes a traction rope 2600. The traction rope 2600 may be a steel wire, one end of the traction rope 2600 is wound around the second revolving body 268, and the other end of the traction rope 2600 is fixedly mounted on the movable upright 24. By rotating the second rotating body 268 in the first rotating direction S1, one end of the traction rope 2600 is wound around the second rotating body 268, and the movable pole 24 is pulled up with respect to the fixed pole 22. Conversely, by rotating the second rotating body 268 in the second rotating direction S2, one end of the traction rope 2600 is unreeled to the second rotating body 268, and the movable pole 24 descends relative to the fixed pole 22 due to its own weight.

It will be appreciated that the transmission assembly 260 is not limited to the form of a traction rope 2600, and in other embodiments, the transmission assembly 260 includes a gear fixedly mounted to the second rotator 268 and a rack fixed to the movable pole 24, the gear being engaged with the rack, the gear being rotatable with the second rotator 268 to drive the rack up or down. In other embodiments, the transmission assembly 260 may be a screw assembly, a sprocket assembly, a pulley assembly, or the like, so long as the second revolving body 268 rotates to drive the movable upright 24 to ascend or descend through the transmission assembly 260.

In this embodiment, the transmission assembly 260 may further include a pulley 2602. The pulley 2602 is mounted on top of the fixed upright 22, the pulley 2602 can rotate around its own rotation axis relative to the fixed upright 22, the other end of the hauling rope 2600 is fixedly mounted on the movable upright 24 via the pulley 2602, and the pulley 2602 and the hauling rope 2600 form a fixed pulley mechanism. By providing the pulley 2602, abrasion of the traction rope 2600 can be avoided, and friction between the traction rope 2600 and the fixed upright 22 is reduced, so that the second revolving body 268 can be rotated conveniently.

The unidirectional rotation assembly 262 is a ratchet assembly, the rotation member 2622 is a ratchet, and the ratchet is exemplified as an internally engaged ratchet, and the ratchet assembly further includes a pawl (not shown) and an elastic member (not shown). The ratchet wheel is annular as a whole, a ratchet is arranged on the inner side of the ring of the ratchet wheel, and the ratchet wheel is sleeved on the fixed support 2620. One end of the pawl is mounted on the fixed support 2620, the pawl can swing relative to the fixed support 2620, the other end of the pawl abuts against a ratchet of the ratchet wheel, the elastic piece is arranged between the pawl and the fixed support 2620, and the elastic piece is used for providing elastic force for enabling the pawl to abut against the ratchet wheel.

It will be appreciated that, according to practical situations, the unidirectional rotation assembly 262 is not limited to a ratchet assembly, in other embodiments, the unidirectional rotation assembly 262 may be a toothed disc assembly, the fixed support 2620 is a first end toothed disc, the rotation member 2622 is a second end toothed disc, the toothed disc assembly includes the first end toothed disc, the second end toothed disc and a compression spring, the second end toothed disc is engaged with the first end toothed disc through a ratchet, and the compression spring presses the first end toothed disc against the second end toothed disc, so that the first end toothed disc and the second end toothed disc remain engaged, and the second end toothed disc can rotate relative to the first end toothed disc only in one rotation direction. In other embodiments, the unidirectional rotating assembly 262 may also be a roller backstop, so long as the unidirectional rotating assembly 262 is capable of rotating in only one rotational direction.

The armbar 264 includes a helical portion 2640 and an abutment portion. The screw portion 2640 has elasticity, the screw portion 2640 is screwed around the preset axis O, and the screw portion 2640 is sleeved and holds the rotating member 2622.

The abutment portion is connected to and protrudes from the spiral portion 2640, and the first rotator 266 is configured to press the abutment portion. When the first rotator 266 presses the abutment portion in the first rotation direction S1, the screw portion 2640 drives the rotation member 2622 to rotate, and when the first rotator 266 presses the abutment portion in the second rotation direction S2, the screw portion 2640 releases the rotation member 2622 and rotates relative to the rotation member 2622. When second rotor 268 rotates between the first position and the second position, and second rotor 268 rotates in the second rotation direction S2, the abutting portion abuts against second rotor 268. By pressing the abutting portions of the first and second rotators 266, 268, the spring 264 can be biased more conveniently, for example, by pushing the spring 264 and the rotator 2622, for example, by pushing the spring 264 and releasing the rotator 2622, for example, by pushing the spring 264, and then, for example, by pushing the second rotator 268.

It is to be understood that the connection between the first and second rotators 266, 268 and the armful spring 264 is not limited to the form of pressing the abutting portion, and the abutting portion may be pulled by the first and second rotators 266, 268 according to practical situations, and thus the abutting portion is not limited to the protruding screw portion 2640, or the first and second rotators 266, 268 may directly press the screw portion 2640, and the abutting portion may be omitted, so long as the first and second rotators 266, 268 press the armful spring 264 and deform the screw portion 2640, and the rotating member 2622 may be released.

Specifically, the abutment includes a first abutment 2642 and a second abutment 2644. The first abutting portion 2642 and the second abutting portion 2644 are both connected to and protrude from the spiral portion 2640, and the first rotator 266 is configured to press the first abutting portion 2642 or the second abutting portion 2644. When the first rotating body 266 presses the first abutting portion 2642 in the first rotating direction S1, the screw portion 2640 drives the rotating element 2622 to rotate, and when the first rotating body 2622 presses the second abutting portion 2644 in the second rotating direction S2, the screw portion 2640 releases the rotating element 2622 and rotates relative to the rotating element 2622. When the second rotor 268 rotates between the first position and the second rotor 268 rotates in the second rotation direction S2, the first contact portion 2642 contacts the second rotor 268 to prevent the second rotor 268 from continuing to rotate.

Since the first and second contact portions 2642 and 2644 are two leading ends of the spiral portion 2640, the spiral portion 2640 is spiral in one rotation direction, and therefore, pressing the first contact portion 2642 in the first rotation direction S1 or pressing the second contact portion 2644 in the second rotation direction S2 by the first rotator 266 deforms the spiral portion 2640 and releases the rotator 2622 or tends to release the rotator 2622. The screw 2640 loosens the rotating member 2622 or has a tendency to loosen the rotating member 2622 depending on a pressure difference applied to two fulcrums of the wrap spring 264, one of which is the first and second abutting portions 2642, 2644 and the other of which is the rotating member 2622, but since the resistance between the rotating member 2622 and the fixed support 2620 is small, the pressure required to deform the screw 2640 to loosen the rotating member 2622 is much larger than the resistance, so that the screw 2640 can be pushed to rotate together with the rotating member 2622 with respect to the fixed support 2620 in the first rotation direction S1, and the screw 2640 is less likely to slip with respect to the rotating member 2622. The first abutting portion 2642 abuts against the second revolving body 268, that is, the second revolving body 268 presses the first abutting portion 2642 in the second revolving direction S2, and the spiral portion 2640 deforms to further hug the revolving member 2622.

In the present embodiment, the second abutting portion 2644 is located on a side of the first abutting portion 2642 in the first rotation direction S1.

The first rotation body 266 includes a first rotation body 2660 and a stopper. The first rotating body 2660 is mounted on the fixed support, and the first rotating body 2660 can rotate around the preset axis O relative to the fixed support 2620. The first revolving body 2660 is provided with an arc-shaped notch 2662, the arc-shaped notch 2662 has a first end and a second end, and the arc-shaped notch 2662 is used for the second revolving body 268 to pass through.

The stop portion is provided on a surface of the first pivoting body 2660 facing the arming spring 264. When the stopper presses the first abutment 2642 in the first rotation direction S1, the screw 2640 drives the rotating member 2622 to rotate, and when the stopper presses the second abutment 2644 in the second rotation direction S2, the screw 2640 releases the rotating member 2622 and rotates relative to the rotating member 2622.

Specifically, the stops include a first stop 2664 and a second stop 2666. The first stop portion and the second stop portion are both disposed on a surface of the first rotating body 2660 facing the arming spring 264, the first stop portion 2664 is used for pressing the first abutting portion 2642, and the second stop portion 2666 is used for pressing the second abutting portion 2644. When the first stopping portion 2664 presses the first abutting portion 2642 in the first rotation direction S1, the screw portion 2640 drives the rotating member 2622 to rotate, and when the second stopping portion 2666 presses the second abutting portion 2644 in the second rotation direction S2, the screw portion 2640 releases the rotating member 2622 and rotates relative to the rotating member 2622.

In the present embodiment, the first abutting portion 2642 and the second abutting portion 2644 are both located between the first stopper portion 2664 and the second stopper portion 2666 in the first rotation direction S1, and the first abutting portion 2642 is closer to the first stopper portion 2664, and the second abutting portion 2644 is closer to the second stopper portion 2666.

In the present embodiment, the arc-shaped notch 2662 is located between the first stopper 2664 and the second stopper 2666 in the first rotation direction S1, and the arc-shaped notch 2662 is closer to the first stopper 2664. The first end is closer to the first stop 2664 and the second end is closer to the second stop 2666.

The second swivel 268 includes a second swivel body and a stop bar 2680. The second rotating body is mounted to the first rotating body 266, and the second rotating body is rotatable about the preset axis O with respect to the first rotating body 266.

The limiting rod 2680 is disposed on a surface of the second rotating body facing the first rotating body 266, the limiting rod 2680 passes through the arc-shaped notch 2662, the limiting rod 2680 is located between the first abutting portion 2642 and the second abutting portion 2644 in the first rotating direction S1, and the limiting rod 2680 is used for pushing the first rotating body 266 to rotate. When the second rotating body rotates to the first position, the limit lever 2680 is located at the first end, the limit lever 2680 may push the first rotating body 266 toward the first rotating direction S1, when the second rotating body rotates to the second position, the limit lever 2680 is located at the second end, the limit lever 2680 may push the first rotating body 266 toward the second rotating direction S2, when the second rotating body rotates to between the first position and the second position, and when the second rotating body rotates toward the second rotating direction S2, the limit lever 2680 is located between the first end and the second end, and the first abutting portion 2642 abuts against the limit lever 2680.

It will be appreciated that in some embodiments, the stop lever 2680 may include a first stop lever and a second stop lever, where the first stop lever is located in the arcuate notch 2662, the second stop lever passes over the first swivel body 2660 and is located between the first abutment 2642 and the second abutment 2644 in the first swivel direction S1, where the first stop lever is located at the first end when the second swivel body is rotated to the first position, where the first stop lever is located at the second end when the second swivel body is rotated to the second position, and where the first stop lever is located between the first end and the second end when the second swivel body is rotated to the first position, where the first abutment 2642 abuts the second stop lever to prevent the second swivel body 266 from continuing to rotate.

The second swivel body includes a rope shaft 2682 and a baffle. The rope shaft body is mounted on the first revolving body 266, the rope shaft body can rotate around the preset axis O relative to the first revolving body 266, and one end of the traction rope 2600 is wound on the rope shaft body 2682.

The baffle is disposed at the end of the rope shaft 2682, and the cross-sectional dimension of the baffle is greater than the transverse-axial dimension of the rope shaft 2682. One end of the traction rope 2600 is limited to the rope shaft 2682 by the baffle plate so as to prevent the traction rope 2600 from being separated from the rope shaft 2682.

Specifically, the baffles include a first baffle 2684 and a second baffle 2686. The first baffle 2684 is disposed at one end of the rope shaft 2682 near the first rotator 266, the second baffle 2686 is disposed at the other end of the rope shaft 2682 far away from the first rotator 266, and the cross-sectional dimensions of the first baffle 2684 and the second baffle 2686 are both greater than the cross-sectional dimension of the rope shaft 2682.

The handle 269 is fixedly mounted to the second rotor 268 such that the handle 269 and the second rotor 268 are rotatable about the predetermined axis O. Rotation of second rotor 268 is facilitated by handle 269.

Referring to fig. 10 and 11, in some embodiments, the driving mechanism 26 is omitted, and the stand assembly 20 further includes a fastening mechanism 27 and an elastic body 28.

The fastening mechanism 27 may be mounted to one end of the fixed pole 22 for securing the movable pole 24 to the fixed pole 22. The fastening mechanism 27 comprises a fastening ring 272 and bolts 274, the fastening ring 272 is sleeved on the fixing upright 22, the fastening ring 272 can be formed by bending a metal strip, and the bolts 274 are installed at two ends of the fastening ring 272.

The elastic body 28 is positioned in the fixed upright 22 and the movable upright 24, and the elastic body 28 is compressed between the bottom of the fixed upright 22 and the movable upright 24. The elastic body 28 may be connected to the movable pole 24 at a position at the bottom, top or middle of the movable pole 24, as desired. The elastomer is in a compressed state when the moving pole is moved to the bottom nearest the fixed pole. In this embodiment, the elastic body 28 is a compression spring, and it is understood that in some other embodiments, the elastic body 28 may be other elastic elements, such as a spring plate, a pneumatic rod, a hydraulic rod, and the like.

When the movable pole 24 is required to be lifted relative to the fixed pole 22, the bolt 274 is rotated so that the fastening ring 272 releases the fixed pole 22, and an upward force is applied to the movable pole 24, so that the movable pole 24 is lifted along the length direction of the fixed pole 22, and an external force applied to the movable pole 24, for example, an external force applied by an operator, can be reduced by the elastic force of the elastic body 28. When the desired position is reached, the bolt 274 is turned to tighten the fixed pole 22 so that the movable pole 24 is fixed in the desired position. When the movable upright 24 needs to be lowered relative to the fixed upright 22, the bolts 274 are turned so that the fastening rings 272 loosen the fixed upright 22, the movable upright 24 can be lowered along the length direction of the fixed upright 22 under the action of the gravity of the movable upright 24 and the beam assembly 30, the lowering speed of the movable upright 24 can be reduced by the elastic force of the elastic body 28, and the movable upright 24 is prevented from being lowered too fast to collide with the fixed upright 22, thereby causing damage.

It will be appreciated that in some other embodiments, the fastening mechanism 27 may be of other construction, as long as it is capable of securing the moving pole 24 in a desired position, for example, the fastening mechanism 27 may be a screw that passes through the fixed pole 22 and is threadedly engaged with the fixed pole 22, and when the moving pole 24 moves to a desired position relative to the fixed pole 22, the screw is rotated to abut the moving pole 24 to secure the moving pole 24 in a desired position. The screw is turned to disengage the moving pole 24, and the moving pole 24 is movable relative to the fixed pole 22 along the length of the fixed pole 22.

Referring to fig. 12, 13 and 14, the beam assembly 30 includes a first supporting rod 31, a first beam portion 32, a second supporting rod 33, a second beam portion 34, a mounting seat 35, a connecting portion 36, an adjusting mechanism 37 and a joint mechanism 39. The first and second support rods 31 and 33 are used for supporting the target to prevent falling, especially when the target has a large area and a large weight.

One end of the first supporting rod 31 may be pivotally connected to the first beam portion 32 by a hinge mechanism, or the like, and the first supporting rod 31 may rotate relative to the first beam portion 32 to be unfolded to be perpendicular to the first beam portion 32, or may be engaged with the first beam portion 32 and be parallel to the first beam portion 32.

The first supporting rod 31 comprises a first supporting rod body 310 and a first supporting member 312, one end of the first supporting rod body 310 is hinged to the first beam portion 32, and the first supporting member 312 is mounted at the other end of the first supporting rod body 310. The side wall of the first supporting rod body 310 is provided with a first clamping groove (not shown).

Similarly, one end of the second supporting rod 33 may be hinged to the second beam portion 34 by a hinge mechanism, or the like, and the second supporting rod 33 may rotate relative to the second beam portion 34 to be unfolded to be perpendicular to the second beam portion 34, or may be engaged with the second beam portion 34 and parallel to the second beam portion 34. The second supporting rod 33 includes a second supporting rod body 330 and a second supporting member 332, one end of the second supporting rod body 330 is hinged to the second beam portion 34, and the second supporting member 332 is mounted at the other end of the second supporting rod body 330. The side wall of the second supporting rod body 330 is provided with a second clamping groove 3300. The first support 312 and the second support 332 extend in the same direction, and when the first support rod 31 is unfolded to be perpendicular to the first beam portion 32 and the second support rod 33 is unfolded to be perpendicular to the second beam portion 34, the first clamping groove and the second clamping groove 3300 are disposed opposite to each other, and the first support 312 and the second support 332 may be used to jointly support a calibration element, such as a pattern plate.

The first beam portion 32 is provided with a first latch 320 and a first rail 322. The first clamping block 320 and the first supporting rod 31 are both connected to the same side of the first beam portion 32, and when the first supporting rod 31 rotates to be parallel to the first beam portion 32, the first clamping block 320 is clamped into the first clamping groove, so that the first supporting rod 31 is clamped to the first beam portion 32. The first guide rail 322 is disposed on the other side of the first beam portion 32, the first guide rail 322 is disposed parallel to the first beam portion 32, the first guide rail 322 is used for mounting a pendant to mount a calibration element, such as a calibration target, a reflector, a laser, etc., and the pendant can slide along the first guide rail 322.

Similarly, the second beam portion 34 is provided with a second latch 340 and a second rail 342. The second clamping block 340 and the second supporting rod 33 are both connected to the same side of the second beam portion 34, and when the second supporting rod 33 rotates to be parallel to the second beam portion 34, the second clamping block 340 is clamped into the second clamping groove 3300, so that the second supporting rod 33 is clamped to the second beam portion 34. The second rail 342 is disposed on the other side of the second beam portion 34, the second rail 342 is disposed parallel to the second beam portion 34, the second rail 342 is used for mounting a hanging member to mount a calibration element, such as a mirror, and the hanging member can slide along the second rail 342. The first rail 322 and the second rail 342 are symmetrically disposed with respect to the connecting portion 36, and the first beam portion 32 and the second beam portion 34 are also symmetrically disposed with respect to the connecting portion 36. When the base 10 is placed on a horizontal plane, the first rail 322, the second rail 342, the first beam portion 32 and the second beam portion 34 are all disposed horizontally.

It will be appreciated that in some other embodiments, the positions of the first clamping block 320 and the first clamping groove may be interchanged, that is, the first clamping block 320 is mounted on the first supporting rod body 310, and the first clamping groove is provided on the first beam portion 32; similarly, the positions of the second clamping block 340 and the second clamping groove 3300 may be interchanged, that is, the second clamping block 340 is mounted on the second supporting rod body 330, and the second clamping groove 3300 is disposed on the second beam portion 34. Optionally, the first clamping groove and the second clamping groove 3300 are concavely arranged on the corresponding beam parts.

It will be appreciated that in some other embodiments, the first rail 322 and the second rail 342 may be disposed on other sides of the beam, such as the top side. In some other embodiments, the calibration element may be hung directly on the cross beam using hooks or the like without providing the first rail 322 and the second rail 342. The first rail 322 and the second rail 342 may have other shapes, and need not necessarily be as shown, for example, they may be one or several groove lines provided on the top surface of the cross beam, and the outer wall of the cross beam itself may be used to form the groove lines without installing additional rails.

It will be appreciated that the number of levers is not limited by the embodiments described above. For example, only one support rod may be provided at a substantially central position of the connection portion 36, and a target located substantially in the middle of the beam assembly 30 may be well lifted. When the target for calibration is positioned at other positions, the support rods can be arranged at corresponding positions for lifting. The positions of the supporting rods can be more than two. In addition, the support rods may be provided on rails provided on the sides or bottom of the beam assembly 30 so that the support rods can be moved along the assembled beam assembly 30 to lift targets that may be in different positions in the appropriate location.

It will be appreciated that when the guide rail is used to allow movement of the support bar, the support bar may be clamped to the beam assembly 30 using a clamping block or slot.

The connecting portion 36 of the cross beam is sleeved in the mounting seat 35, positioning holes 3604 are concavely formed in the first surface 360 of the connecting portion 36, and the number of the positioning holes 3604 is preferably two, and the two positioning holes 3604 are arranged along the length direction of the connecting portion 36.

Referring to fig. 15, the connecting portion 36 is provided with a fixing slot 3620, and a fixing surface 3624 is disposed in the fixing slot 3620, and the fixing slot 3620 cooperates with the fixing rod 354 in fig. 16 to fix the beam assembly on the mounting seat 35. Alternatively, the securing slots 3620 are positioned such that the securing surface 3624 is at an angle to the bottom surface of the mounting block 35, the advantages of this arrangement being described in connection with the securing lever of FIG. 16. For example, the securing slot 3620 can be disposed between the second surface 362 and the top surface of the beam, wherein the second surface 362 is disposed parallel to the first surface 360, and the securing surface 3624 is disposed at an angle to the first surface 360 and the second surface 362, such as the securing surface 3624 is disposed at 45 degrees to the first surface 360 and the second surface 362.

In this embodiment, the first beam portion 32, the second beam portion 34 and the connecting portion 36 are all square, so that the weight of the calibration stand 100 can be reduced, and the connecting portion 36 can be easily and firmly sleeved in the adjusting mechanism 38. It will be appreciated that in some other embodiments, the first beam portion 32, the second beam portion 34, and the connecting portion 36 may be other shaped tubing, profiles, rods, etc., such as polygonal or circular tubing or rods. When the cross beam is a tube of other shapes, the securing slots 3620 may be positioned such that the securing surface 3624 is at an angle to the bottom surface of the mounting block 35.

Referring to fig. 16 and 17, the mounting seat 35 is used for sleeving the connecting portion 36. The mount 35 includes a retainer 352, a securing rod 354, and a mounting shell 356.

Alternatively, the mounting base 35 may be disposed on the adjustment mechanism 37, such that the mounting base 35 is rotatable relative to the riser assembly 20 about the adjustment rotation axis L under adjustment of the adjustment mechanism 37 to adjust the horizontal angle of the mounting base 35 and the beam assembly 30. Preferably, the adjusting mechanism 37 is disposed in a vertical relationship with the mounting base, so as to facilitate the convenient disassembly and assembly of the cross beam from above while achieving the horizontal angle adjustment. The adjustment rotation axis L is arranged parallel to the fixed upright 22 and the movable upright 24, i.e. when the calibration stand 100 is placed in a horizontal plane, the adjustment rotation axis L is arranged vertically. The mounting seat 35 is provided with a notch 350 for facilitating the insertion of the connecting portion 36 into the mounting seat 35 or the removal of the connecting portion 36 from the mounting seat 35.

The retainer 352 is generally hook-shaped to facilitate retention of the connecting portion 36. One end of the retainer 352 is fixedly attached to the mounting shell 356, such as mounted on the upper surface or side of the mounting shell 356, and the other end surrounds and holds the attachment portion 36 of the beam assembly 20, leaving the gap 350. For example, the retainer 352 may have the shape shown in fig. 16, but may have other shapes, such as a ring-shaped hook, other polygonal hook, and a combination of ring and polygon hook, as long as the stable holding of the connecting portion 36 is achieved. As used herein, "generally hook-shaped" means that the retainer 352 can extend a length from an angle to support and hold the connection 36.

The retainer 352 and the mounting shell 356 define a mounting channel for receiving the connecting portion 36. The mounting channel communicates with the notch 350. Positioning posts 3524 are provided on the inner surface of the retainer 352, and two of the positioning posts 3524 are positioned in the mounting channel for insertion into two of the positioning holes 3604 (see fig. 11) to facilitate positioning of the connecting portion 36 in the mounting channel. The purpose of the locating holes is to further reduce any displacement of the beam assembly 20 relative to the mounting block 35 in the horizontal direction when calibration is performed. The locating posts 3524 may also be provided on the upper surface of the mounting shell 356, or on both the upper surface of the mounting shell 356 and the inner surface of the retainer 352. The positioning column comprises a circular, square and long-strip-shaped positioning column, and the positioning hole comprises a circular, square and long-strip-shaped positioning hole. When the positioning posts and the positioning holes are substantially punctiform, there are preferably at least two positioning posts 3524 along the length of the connecting portion 36 to ensure that the connecting portion 36 is not displaced along its length. When the positioning column and the positioning hole are approximately in a strip shape, only one pair of positioning column and positioning hole can be used. It will be appreciated that in some other embodiments, the locations of the locating holes 3604 and the locating posts 3524 may be interchanged, i.e., the locating holes 3604 open out from the retainer 352 and communicate with the mounting channel, and the locating posts 3524 are disposed on the first surface 360 (see fig. 11).

Optionally, the fixing rod 354 is disposed on the fixing member 352, and includes a knob and at least one section of screw, and is matched with the thread of the fixing member 352, when the connecting portion 36 is sleeved on the mounting seat 35, the central axis of the fixing rod 354 is perpendicular to the fixing surface 3624 at the beam connecting portion 36, and the fixing rod 354 is rotated, so that the fixing rod 354 abuts against the fixing surface 3624, so that the connecting portion 36 of the beam assembly is fixed on the mounting seat 35, or the fixing rod 354 is rotated, so that the fixing rod 354 is separated from the fixing surface 3624, and the connecting portion 36 can be removed from the mounting seat 35 through the notch 350.

Optionally, the securing surface 3624 is angled with respect to the bottom surface (i.e., horizontal) of the mounting block 35 and the securing lever 354 is angled with respect to the bottom surface of the mounting block 35 by more than 0 degrees and less than 90 degrees. Alternatively, the angle is substantially 45 degrees. In this arrangement, only one fixing rod 354 is used, so that a pressing force toward the bottom surface and a side surface of the mounting seat, which is a side surface opposite to the extending direction of the fixing rod 354, can be applied to the connecting portion 36, thereby achieving high stability of the fixing seat to the connecting portion 36, and facilitating disassembly and assembly of the beam assembly.

It will be appreciated that the mounting block 35 may be of other configurations, for example, it is not necessary to maintain a notch, and a baffle or the like may be used to block the notch after the attachment portion 36 is placed in the mounting block 35. The connection portion 36 may be installed in other manners, for example, the mounting seat 35 may be a complete ring structure without a notch for placing the beam, and the beam may be screwed and fixed by the fixing rod 354 after the measurement is assembled.

It will be appreciated that the bottom or side of the mounting seat 35 pressed by the connecting portion 36 may be circular or have other irregular shapes, and the fixing rod 354 may be used to press the connecting portion 36 onto the surfaces, where the fixing rod and the surfaces may be in line contact, but not in surface contact, without affecting the pressing effect.

Alternatively, when the mount 35 includes a notch 350, the surface of the mount 35 facing away from the notch 350 may also be used to mount a calibration element, such as the multi-line laser 200 (see fig. 1), or the like.

The mounting shell 356 is generally cubic with an opening on one side. The adjustment mechanism 37 is disposed within an opening of the mounting housing 356. The mounting shell 356 is provided with a threaded bore 3562. The adjusting mechanism 37 includes a support shaft 371, a first elastic member 372, a rotating member 373, a bearing housing 374, a base 375, and an adjusting lever 376. The adjustment mechanism 37 is used to adjust the angle (i.e., yaw angle) of the beam assembly 20 in the horizontal direction.

The support shaft 371 is accommodated in the mounting case 356 and fixedly mounted to an inner wall of the mounting case 356. The central axis of the support shaft 371 coincides with the adjustment rotation axis L.

One end of the first elastic member 372 is fixed to the mounting post 3560, and the other end of the first elastic member 372 is fixed to the rotating member 373. In this embodiment, the first elastic member 372 is a spring.

The rotating member 373 is substantially cubic, and has a protrusion 3732 at one end, and the protrusion 3732 and the first elastic member 372 are respectively located on opposite sides of the rotating member 373. The rotating member 373 is sleeved on the bearing seat 374.

The bearing seat 374 is fixedly mounted to a surface of the base 375, and a central axis of the bearing seat 374 coincides with the adjustment rotation axis L. The rotating member 373 is fixedly mounted on the base 375 and is sleeved on the bearing seat 374. One end of the support shaft 371 is inserted into the bearing block 374 such that the support shaft 371 and the mounting shell 356 are rotatable together about the adjustment rotation axis L relative to the rotator 373, the bearing block 374 and the base 375.

The base 375 is configured to be mounted to the movable upright 24, and the movable upright 24 may drive the base 375 to rise or fall. In this embodiment, the base 375 is a cube, and the base 375 covers the opening of the mounting case 356. The supporting shaft 371, the first elastic member 372 and the rotating member 373 are both accommodated in a cavity defined by the mounting shell 356 and the base 375.

The term "cube" as used herein includes a sheet-like case.

The adjusting lever 376 is installed in the threaded hole 3562, and the adjusting lever 376 is rotated, so that the adjusting lever 376 abuts against the protrusion 3732, and pushes the mounting base 35 to rotate around the adjusting rotation axis L relative to the rotating member 373 and the base 375, thereby adjusting the horizontal angle of the mounting base 35 and the connecting portion 36, and the first elastic member 372 is stretched. The adjusting lever 376 is rotated in the opposite rotation direction, and the mounting base 35 is pulled by the first elastic member 372 to rotate and reset relative to the rotating member 373 and the base 375 about the adjustment rotation axis L.

It will be appreciated that in some other embodiments, the base 375 may be omitted and the swivel 373 and bearing seat 374 may be fixedly mounted directly to the top surface of the moving riser 24.

It will be appreciated that the adjustment mechanism 37 described above may alternatively be used. When the adjustment mechanism 37 is removed, the mounting housing 356 of the mount 35 described above may be removed and the retainer 352 mounted at the top surface of the moving riser 24 or on another additional mounting surface. It should be appreciated that the retainer 352 may also extend to form a bottom surface and surround the lower surface of the connection portion 36 of the beam assembly 30, i.e., the retainer 352 may have a bottom surface that is mounted over the mounting shell 356.

Referring back to fig. 13, the number of the joint mechanisms 39 is two, one joint mechanism 39 is connected between the first beam portion 32 and the connecting portion 36, and the other joint mechanism 39 is connected between the second beam portion 34 and the connecting portion 36. In some embodiments, the articulation mechanism 39 is secured within the wall tubes of the first beam portion 32, the second beam portion 34, and the connection portion 36. In some embodiments, the joint mechanism 39 is fixed outside the wall tubes of the first beam portion 32, the second beam portion 34, and the connecting portion 36, and is connected to the cross sections of the wall tubes of the first beam portion 32, the second beam portion 34, and the connecting portion 36 by, for example, fastening, screwing, bonding, or the like.

Referring to fig. 18, 19 and 20, a first embodiment of the configuration of the articulation mechanism 39 is shown. The articulation mechanism 39 includes a first securing member 391, a second securing member 396, a first shaft 397, a catch member 392, a second shaft 393, a second elastic member 394, and a tightening mechanism 395.

The first and second fixtures 391 and 396 are hingedly connected together by a first rotating shaft 397. The first fixing member 391 is substantially cubic and has one end hinged to one end of the second fixing member 396. The first fixing member 391 is provided with a first through hole 3910.

The fastening member 392 is received in the first through hole 3910, the second rotating shaft 393 passes through the middle of the fastening member 392, and two ends of the second rotating shaft 393 are respectively mounted on the side wall of the first fixing member 391. The fastening member 392 may rotate around the second rotating shaft 393, one end of the fastening member 392 extends with a hook 3922, one end of the second elastic member 394 abuts against the other end of the fastening member 392, and the other end of the second elastic member 394 abuts against the inner wall of the first fixing member 391. The second elastic member 394 is a compression spring for recovering elastic deformation to push the fastening member 392 to rotate around the second rotating shaft 393.

The screwing mechanism 395 includes a knob and at least one section of screw, one end of the screwing mechanism 395 passes through the first fixing part 391 from the outside of the first fixing part 391 to abut against the fastening part 392, the screwing mechanism 395 and the second elastic part 394 are located at the same side of the central axis of the second rotating shaft 393, and the hook part 3922 is located at the other side of the central axis of the second rotating shaft 393.

The second securing member 396 is also generally cubic and defines a second throughbore 3960. The inner wall of the second through hole 3960 is provided with a clamping protrusion 3962. The first fixing member 391 is fixed inside the connection part 36, and the second fixing member 396 is fixed inside the first beam part 32 or the second beam part 34, so that the first beam part 32 or the second beam part 34 can be engaged with the connection part 36.

When the first fixing member 391 and the second fixing member 396 are closed, the first fixing member 391 contacts the second fixing member 396, the first through hole 3910 communicates with the second through hole 3960, the hook portion 3922 is fastened to the locking protrusion 3962 under the pushing of the second elastic member 394, and the fastening mechanism 395 is rotated, so that the fastening mechanism 395 presses the fastening member 392, and the hook portion 3922 is further locked to the locking protrusion 3962, so that the first beam portion 32 or the second beam portion 34 is stably in an unfolded state with respect to the connecting portion 36.

The screwing mechanism 395 is rotated to disengage from the fastening member 392, such that the first fixing member 391 is rotated relative to the second fixing member 396, the hook portion 3922 is disengaged from the locking protrusion 3962, and the first fixing member 391 is separated from the second fixing member 396, such that the first beam portion 32 or the second beam portion 34 can be rotated relative to the connecting portion 36, so that the beam assembly 30 is folded.

In this embodiment, by pushing the second elastic member 394, the hook portion 3922 may be conveniently fastened to the locking protrusion 3962, so that the hook portion 3922 is pre-fastened to the locking protrusion 3962, and then the fastening mechanism 395 compresses the fastening member 392, so that the hook portion 3922 is further locked to the locking protrusion 3962.

It will be appreciated that in some other embodiments, the positions of the first and second fixing members 391 and 396 may be interchanged, i.e., the first fixing member 391 is fixed to the inside of the first or second beam portions 32 and 34, and the second fixing member 396 is fixed to the inside of the connecting portion 36.

It will be appreciated that the first fastening member 391 and the second fastening member 396 may be integrally formed with the inner wall of the first beam portion 32, the second beam portion 34, or the connecting portion 36, i.e., the first fastening member 391 and the second fastening member 396 may be a portion of the inner wall of the first beam portion 32, the second beam portion 34, or the connecting portion 36. The first fixing member 391 and the second fixing member 396 may be connected together without the first shaft, but the first beam portion 32 or the second beam portion 34 and the outer wall of the connecting portion 36 are connected together with an additional shaft, which also enables the pivotable connection between the first beam portion 32 or the second beam portion 34 and the connecting portion 36.

It will be appreciated that the relative positions of the second elastic member 394 and the tightening mechanism 395 and the second shaft 393 may vary, i.e., the second elastic member 394 may be closer to the second shaft 393 than the tightening mechanism 395, so long as the catch 392 is enabled to lock the catch 3962.

Referring to fig. 21 and 22 together, a second embodiment of the construction of the articulation mechanism 39 is shown. The joint mechanism 39a provided in this second embodiment is substantially the same as the joint mechanism 39 in the above embodiment, and the difference is that one end of the fastening member 392a is provided with a hook portion 3922a and a protruding portion 3924a, two hook portions 3922a are located on opposite sides of the protruding portion 3924a, the inner wall of the second through hole 3960 is provided with two clamping protrusions 3962a, and the number of the clamping protrusions 3962a is two, and the position of each clamping protrusion 3962a corresponds to the position of a corresponding hook portion 3922 a. The knob 395 is replaced with a button 395a, which button 395a is mounted to the second mount 396. The second elastic member 394 is a compression spring, which is compressed between the first fixing member 391 and the fastening member 392 a.

When the first fixing member 391 and the second fixing member 396 are closed, the first fixing member 391 and the second fixing member 396 are in contact, the first through hole 3910 is in communication with the second through hole 3960, the second elastic member 394 abuts against the fastening member 392a, so that the two hook portions 3922a are fastened to the two locking protrusions 3962a, respectively, and the first fixing member 391 and the second fixing member 396 are fastened to each other, so that the first beam portion 32 or the second beam portion 34 is unfolded relative to the connecting portion 36.

When the button 395a is pushed, such that the button 395a pushes the protrusion 3924a to push the catch 392a to rotate about the second rotating shaft 393, the hook portion 3922a is separated from the catch 3962a, and the second elastic member 394 is further compressed, at this time, the first fixing member 391 may rotate relative to the second fixing member 396, such that the first fixing member 391 is separated from the second fixing member 396, and the first beam portion 32 or the second beam portion 34 may rotate relative to the connecting portion 36, so that the beam assembly 30 may be folded. The button 395a is lifted to make the button 395a far away from the catch 392a, and the second elastic member 394 returns to elastic deformation to push the catch 392a to rotate around the second rotating shaft 393, so that the hook 3922a is fastened to the catch 3962a.

Referring to fig. 23, in order to increase the engagement force between the first beam portion 32 and the second beam portion 34 and the connecting portion 36, so that the first beam portion 32 and the second beam portion 34 can mount a calibration element with a larger weight, the calibration stand 100 may further include a snap structure 50, where one of the snap structures 50 is connected between the first beam portion 32 and the connecting portion 36, and the other of the snap structures 50 is connected between the second beam portion 34 and the connecting portion 36.

Each of the snap structures 50 includes a first snap member 52 and a second snap member 54. The connecting portion 36 is provided with a first fastener 52, one end of the first fastener 52 is hinged to the connecting portion 36 and is provided with a pulling portion 522, the other end of the first fastener 52 is provided with a hook rod 524, the first beam portion 32 or the second beam portion 34 is provided with a second fastener 54, and the second fastener 54 is provided with a fastener portion 544. The hinge joint of the first beam portion 32 or the second beam portion 34 and the connecting portion 36 is located at one side of the connecting portion 36, and the first snap member 52 and the second snap member 54 are located at the other side of the connecting portion 36. When the first beam portion 32 and the second beam portion 34 are unfolded with respect to the connection portion 36, the first beam portion 32 and the second beam portion 34 are respectively brought into contact with the connection portion 36, and the drag hook lever 524 is fastened to the buckle portion 544. Pulling the pulling portion 522, the hook lever 524 disengages the catch portion 544, and the first catch member 52 and the second catch member 54 are separable such that the first beam portion 32 or the second beam portion 34 is foldable relative to the connecting portion 36.

It will be appreciated that in some other embodiments, the positions of the first and second tabs 52, 54 may be interchanged, i.e., the first tab 52 is disposed on the first beam portion 32 or the second beam portion 34, and the second tab 54 is disposed on the connecting portion 36. In some embodiments, the first and second fasteners 52, 54 may be used in conjunction with the articulation mechanism 39, i.e., the articulation mechanism 39 is now within the inner walls of the first beam portion 32, the second beam portion 34, and the connecting portion 36. In some embodiments, the first and second fasteners 52, 54 may be used alone, i.e., without the articulation mechanism 39 within the inner walls of the first beam portion 32, the second beam portion 34, and the connecting portion 36.

Referring to fig. 24 and 25 together, another embodiment of the present invention further provides a calibration system 600, which includes a calibration element and the calibration support 100 provided in the foregoing embodiment, where the calibration element may be mounted on the calibration support 100, for example, the calibration element is a mirror 300 and a distance measuring device 400 (see fig. 24), the mirror 300 may be mounted on a first rail 322 or a second rail 342 by a slider, the slider is mounted on the first rail 322 or the second rail 342, and may slide along the first rail 322 or the second rail 342 together with the mirror 300, and the distance measuring device 400 is fixedly mounted on the beam assembly 30. The reflector 300 may be a target 300, and two targets are mounted on the first rail 322 and the second rail 342 through a slider. The mirror or target 300 may also be directly mounted to the beam assembly 30 by means of hooks, etc., and the first rail 322 and the second rail 342 may be eliminated.

The distance measuring device 400 described above is used to measure the height of the beam assembly 30 from the ground, and is preferably displayed on the liquid crystal screen of the distance measuring device 400. In one embodiment, distance measuring device 400 is a laser rangefinder. The base 10 is provided with a through hole 120 for allowing the laser of the laser rangefinder 400 to strike the ground, thereby measuring the height of the beam assembly 30 from the ground.

For another example, the calibration element is a pattern plate 500 (see fig. 25), and the first support 312 and the second support 332 support the pattern plate 500 together to prevent falling. In addition, the first guide rail 322 may further be provided with a first fixing block 510, the first fixing block 510 may slide along the first guide rail 322, the second guide rail 342 may be provided with a second fixing block 520, the second fixing block 520 may slide along the second guide rail 342, the first fixing block 510 and the second fixing block 520 are respectively located at two opposite sides of the pattern plate 500, and the first fixing block 510 and the second fixing block 520 cooperatively clamp the pattern plate 500.

In an alternative embodiment, the first fixing block 510 and the second fixing block 520 are sliders for mounting the mirror 300. A clamping groove is formed on the opposite side of the slider to clamp the pattern plate 500, i.e., to form a fixing block. It can be appreciated that the first fixing block 510 and the second fixing block 520 may be magnetic blocks, and the pattern plate 500 is sucked from the rear by the magnetic attraction, so as to enhance the firmness of mounting the pattern plate 500 on the beam assembly 30.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The calibration support is characterized by comprising a base, a vertical frame assembly and a beam assembly, wherein the vertical frame assembly comprises a fixed vertical rod, a movable vertical rod and a driving mechanism, one end of the fixed vertical rod is fixedly arranged on the base, the movable vertical rod is sleeved on the fixed vertical rod, the movable vertical rod can lift relative to the fixed vertical rod, the beam assembly is arranged on the movable vertical rod, and the beam assembly is used for mounting a calibration element;

The driving mechanism includes:

The unidirectional rotation assembly comprises a fixed support and a rotation piece, the fixed support is fixedly arranged on the fixed vertical rod, the rotation piece is arranged on the fixed support, the rotation piece can rotate relative to the fixed support only around a preset axis and towards a first rotation direction, the unidirectional rotation assembly is a ratchet assembly, and the rotation piece is an internal engaged ratchet;

The spring is sleeved and hugs the rotating piece;

The first revolving body is arranged on the fixed support, the first revolving body can rotate around the preset axis relative to the fixed support, the first revolving body is used for extruding a embracing spring, the embracing spring drives the rotating piece to rotate when the first revolving body extrudes the embracing spring towards the first rotating direction, and the embracing spring loosens the rotating piece and rotates relative to the rotating piece when the first revolving body extrudes the embracing spring towards the second rotating direction, and the second rotating direction is opposite to the first rotating direction;

The second revolving body is arranged on the first revolving body, the second revolving body can rotate around the preset axis relative to the first revolving body between a first position and a second position, the second position is arranged on one side of the first position in the first rotating direction, the second revolving body is used for pushing the first revolving body to rotate, when the second revolving body rotates to the first position, the second revolving body can push the first revolving body in the first rotating direction, when the second revolving body rotates to the second position, the second revolving body can push the first revolving body in the second rotating direction, when the second revolving body rotates to the first position and the second position, and when the second revolving body rotates to the second rotating direction, the holding spring abuts against the second revolving body to block the second revolving body from continuing to rotate; and

The transmission assembly is connected with the second revolving body and the movable vertical rod, when the second revolving body rotates towards the first rotating direction, the second revolving body drives the movable vertical rod to ascend through the transmission assembly, and when the first revolving body rotates towards the second rotating direction, the second revolving body drives the movable vertical rod to descend through the transmission assembly;

The hand wheel is fixedly arranged on the second revolving body, and the hand wheel and the second revolving body can rotate together around the preset axis relative to the first revolving body.

2. The calibration support of claim 1, wherein the wrap spring comprises a helical portion and an abutment portion;

The spiral part is sleeved and tightly held on the rotating piece;

the abutting part is connected with and protrudes out of the spiral part, and the first revolving body is used for extruding the abutting part;

When the first revolving body presses the abutting part towards the first rotating direction, the spiral part drives the rotating piece to rotate, and when the first revolving body presses the abutting part towards the second rotating direction, the spiral part loosens the rotating piece and rotates relative to the rotating piece;

when the second revolving body rotates between the first position and the second position, and the second revolving body rotates in the second rotation direction, the abutting portion abuts against the second revolving body to prevent the second revolving body from continuing to rotate.

3. The calibration support of claim 2, wherein the abutment comprises a first abutment and a second abutment;

The first abutting part and the second abutting part are connected and protrude out of the spiral part, and the first revolving body is used for extruding the first abutting part or the second abutting part;

When the first revolving body presses the first abutting part towards the first rotating direction, the spiral part drives the rotating piece to rotate, and when the first revolving body presses the second abutting part towards the second rotating direction, the spiral part loosens the rotating piece and rotates relative to the rotating piece;

when the second revolving body rotates between the first position and the second revolving body rotates in the second rotation direction, the first abutting portion abuts against the second revolving body and prevents the second revolving body from continuing to rotate.

4. A calibration support according to claim 3, wherein the second abutment is located on a side of the first abutment in the first rotational direction.

5. A calibration support according to claim 3, wherein the first swivel body comprises a first swivel body and a stop;

The first rotary main body is arranged on the fixed support and can rotate around the preset axis relative to the fixed support;

the stop part is arranged on one surface of the first rotary main body facing the arming spring;

when the stop part presses the first abutting part towards the first rotating direction, the spiral part drives the rotating part to rotate, and when the stop part presses the second abutting part towards the second rotating direction, the spiral part loosens the rotating part and rotates relative to the rotating part.

6. The calibration support of claim 5, wherein the stop comprises a first stop and a second stop;

The first stop part and the second stop part are arranged on one surface of the first rotary main body facing the arming spring, the first stop part is used for extruding the first abutting part, and the second stop part is used for extruding the second abutting part;

When the first stop part presses the first abutting part towards the first rotating direction, the spiral part drives the rotating piece to rotate, and when the second stop part presses the second abutting part towards the second rotating direction, the spiral part loosens the rotating piece and rotates relative to the rotating piece.

7. The calibration support of claim 6, wherein the first abutment and the second abutment are both located between the first stop and the second stop in the first rotational direction, and the first stop is closer to the first abutment and the second stop is closer to the second abutment.

8. A calibration support according to claim 3, wherein the second swivel body comprises a second swivel body and a stop lever;

the second rotary body is arranged on the first rotary body and can rotate around the preset axis relative to the first rotary body;

The limiting rod is arranged on one surface of the second rotary body, which faces the first rotary body, and is positioned between the first abutting part and the second abutting part in the first rotary direction and used for pushing the first rotary body to rotate;

When the second revolving body rotates to the first position, the limiting rod can push the first revolving body towards the first rotating direction, when the second revolving body rotates to the second position, the limiting rod can push the first revolving body towards the second rotating direction, when the second revolving body rotates to a position between the first position and the second position, and when the second revolving body rotates towards the second rotating direction, the first abutting part abuts against the limiting rod to prevent the second revolving body from continuing to rotate.

9. The calibration support of claim 8, wherein the first rotator is provided with an arcuate notch having a first end and a second end, the stop bar passing through the arcuate notch;

The stop lever is located at the first end when the second swing body is rotated to the first position, at the second end when the second swing body is rotated to the second position, and between the first end and the second end when the second swing body is rotated to between the first position and the second position.

10. The calibration support of claim 9, wherein the second end is located on a side of the first end that faces the first rotational direction.

11. A calibration support according to any one of claims 1 to 10, wherein the transmission assembly comprises a traction rope;

One end of the traction rope is wound on the second revolving body, and the other end of the traction rope is fixedly arranged on the movable vertical rod.

12. The calibration support of claim 11, wherein the transmission assembly further comprises a pulley;

13. The calibration support of claim 11, wherein the second rotation body comprises a rope shaft body and a baffle;

One end of the traction rope is wound on the rope shaft body, and the rope shaft body can rotate around the preset axis relative to the first revolving body;

the baffle is arranged at the tail end of the rope shaft body, and the cross section size of the baffle is larger than the transverse axis surface size of the rope shaft body.

14. The calibration support of claim 13, wherein the baffle comprises a first baffle and a second baffle;

the first baffle is arranged at one end of the rope shaft body, which is close to the first revolving body, the second baffle is arranged at the other end of the rope shaft body, which is far away from the first revolving body, and the cross section size of the first baffle and the cross section size of the second baffle are both larger than the cross section size of the rope shaft body.

15. A calibration system comprising a calibration element and a calibration support according to any one of claims 1 to 14, the calibration element being mountable on the calibration support.