Frame assembly

Abstract

The utility model relates to a frame assembly. The frame assembly comprises a first frame, a second frame and a quick connecting assembly arranged between the first frame and the second frame, and the first frame is detachably connected with the second frame; the quick connecting assembly comprises a first adjusting structure, a second adjusting structure and a connecting structure, wherein the first adjusting structure is used for adjusting the relative position of the first frame and the second frame in the transverse direction; and the second adjusting structure is used for adjusting the relative position of the first frame and the second frame in the longitudinal direction. According to the scheme provided by the invention, positioning and mounting between the frames can be facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of support frames, and in particular to a frame assembly. Background Art

[0002] In related technologies, some instruments and equipment are installed on frame structures, and different frame structures are spliced ​​together for use. When the instruments and equipment on two adjacent frame structures have position requirements, it is necessary to accurately position the two frame structures and adjust the positions of the adjacent frame structures to meet the use requirements of the instruments and equipment.

[0003] Frame structures are usually made of sheet metal, with large processing errors. During on-site installation, screws are usually used to splice and fix the two frame structures. However, this requires a long time to adjust the positions of two adjacent frame structures with position requirements, which is cumbersome to operate and inconvenient to install. Utility Model Content

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides a frame assembly that can facilitate assembly assistance between frames.

[0005] The present application provides a frame assembly, comprising: a first frame, a second frame, and a quick-connect assembly provided between the first frame and the second frame, wherein the first frame and the second frame are detachably connected;

[0006] The quick-connect assembly comprises:

[0007] a first adjustment structure, for adjusting the relative positions of the first frame and the second frame in a lateral direction;

[0008] The second adjustment structure is used to adjust the relative position of the first frame and the second frame in the longitudinal direction.

[0009] Furthermore, the quick-connect assembly further includes an adjustment plate and a positioning pin provided on the adjustment plate;

[0010] The first adjustment structure is a first waist-shaped hole provided on the adjustment plate, and the first waist-shaped hole extends in the transverse direction;

[0011] The second adjustment structure is a second waist-shaped hole provided on the adjustment plate, and the second waist-shaped hole extends in the longitudinal direction.

[0012] Furthermore, the quick-connect assembly also includes: a first screw and a second screw, the first screw passes through the first waist-shaped hole and is connected to the first frame, and the second screw passes through the second waist-shaped hole and is connected to the positioning pin.

[0013] Furthermore, a positioning hole is provided on the second frame for the positioning pin to be inserted when the first frame and the second frame are docked.

[0014] Furthermore, there are multiple quick-connect assemblies, and the quick-connect assemblies are provided on both sides of the joint between the first frame and the second frame.

[0015] Furthermore, the quick-connect components are provided on both sides of the first frame, and the positioning holes are correspondingly provided on both sides of the second frame;

[0016] The distance between the center lines of the quick-connect components on both sides is slightly smaller than the distance between the center lines of the positioning holes on both sides.

[0017] Furthermore, the above frame structure also includes: an auxiliary locking structure for assisting the connection between the first frame and the second frame.

[0018] Furthermore, the auxiliary locking structure includes a clamping mechanism and a bracket, the clamping mechanism includes a worm, a turbine, a screw and a clamping arm connected in sequence, the worm is rotatably connected to the bracket, the turbine is sleeved on the screw, the clamping arm has two, the two clamping arms are oppositely arranged on both sides of the turbine, and the clamping arm is slidably connected to the bracket;

[0019] When the worm rotates, it drives the turbine to rotate. When the turbine rotates, it drives the screw to rotate. When the screw rotates, it drives the two clamping arms to move closer to or separate from each other.

[0020] Furthermore, the threads on the screw rod located on both sides of the turbine have opposite rotation directions;

[0021] The auxiliary locking structure further includes a telescopic rod located between the clamping arm and the bracket, and the clamping arm is slidably connected to the bracket through the telescopic rod.

[0022] Furthermore, the clamping arm is provided with a nut threadedly connected to the screw rod, and the clamping surface of the clamping arm is provided with a protective pad;

[0023] A rotating handle is provided at one end of the worm away from the turbine;

[0024] and / or

[0025] The auxiliary locking structure is located above or below the quick-connect assembly, and the two clamping arms can clamp the first frame and the second frame after the quick-connect assembly adjusts the relative positions of the first frame and the second frame.

[0026] The technical solution provided by the present application may include the following beneficial effects: by arranging a quick-connect assembly between the first frame and the second frame, when the first frame and the second frame are docked, the first adjustment structure adjusts the relative position of the first frame and the second frame in the horizontal direction, and the second adjustment structure adjusts the relative position of the first frame and the second frame in the vertical direction, thereby quickly positioning the first frame and the second frame; during factory debugging, when there are position requirements for the instruments and equipment on the first frame and the instruments and equipment on the second frame, the positions of the instruments and equipment and the frames are adjusted first, and the positions of the first adjustment structure and the second adjustment structure are fixed. After the product is delivered to the customer, the on-site installation only needs to adjust the relative positions of the first frame and the second frame in the horizontal and vertical directions according to the positions of the first adjustment structure and the second adjustment structure. There is no need to adjust the height and front and back positions of the two frames to ensure that the positions of the instruments and equipment on the first frame and the instruments and equipment on the second frame meet the use requirements, and the installation saves time and effort.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0029] Figure 1 is an exploded schematic diagram of a frame assembly shown in an embodiment of the present application;

[0030] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0031] Figure 3 1 is a schematic structural diagram of a positioning pin shown in an embodiment of the present application;

[0032] Figure 4 Schematic diagram of the structure of the adjustment plate shown in the embodiment of the present application;

[0033] Figure 5 is a partial cross-sectional view of the frame assembly at the quick-connect assembly shown in an embodiment of the present application;

[0034] Figure 6 1 is a schematic structural diagram of an auxiliary locking structure shown in an embodiment of the present application;

[0035] Figure 7 is a top view of the auxiliary locking structure shown in an embodiment of the present application;

[0036] Figure 8 yes Figure 7A cross-sectional structural diagram of the auxiliary locking structure along section AA;

[0037] Figure 9 yes Figure 7 Cross-sectional structural diagram of the auxiliary locking structure along the CC section;

[0038] Figure 10 yes Figure 7 Cross-sectional structural diagram of the auxiliary locking structure along the DD section;

[0039] Figure 11 is a side view of the auxiliary locking structure shown in an embodiment of the present application;

[0040] Figure 12 yes Figure 11 Cross-sectional structural diagram of the auxiliary locking structure along section EE.

[0041] Reference numerals:

[0042] 1-first frame, 11-avoidance hole, 2-second frame, 21-positioning hole, 3-quick connect assembly, 31-positioning pin, 32-adjustment plate, 321-first waist-shaped hole, 322-second waist-shaped hole, 33-first screw, 34-second screw, 4-auxiliary locking structure, 41-bracket, 42-worm, 43-turbine, 44-screw, 45-clamping arm, 46-telescopic rod, 47-protective pad, 48-rotating handle, 5-height adjustment piece. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0044] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0046] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0048] like Figures 1 to 7 As shown, an embodiment of the present application provides a frame assembly comprising a first frame 1, a second frame 2, and a quick-connect assembly 3 disposed between the first frame 1 and the second frame 2. The first frame 1 and the second frame 2 are detachably connected. Instruments and equipment can be mounted on the first frame 1 and the second frame 2, respectively, and the first frame 1 and the second frame 2 support and position the instruments and equipment. During transportation, the first frame 1 and the second frame 2 can be separated to save space.

[0049] The quick-connect assembly 3 includes a first adjustment structure and a second adjustment structure. The first adjustment structure is used to adjust the relative position of the first frame 1 and the second frame 2 in the horizontal direction; the second adjustment structure is used to adjust the relative position of the first frame 1 and the second frame 2 in the vertical direction.

[0050] By providing a quick-connect assembly 3 between the first frame 1 and the second frame 2, when the first frame 1 and the second frame 2 are docked, the first adjustment structure adjusts the relative position of the first frame 1 and the second frame 2 in the horizontal direction, and the second adjustment structure adjusts the relative position of the first frame 1 and the second frame 2 in the vertical direction, thereby quickly positioning the first frame 1 and the second frame 2. During factory commissioning, if there are positioning requirements for instruments and equipment on the first frame 1 and the second frame 2, the positions of the instruments and equipment and the frames are first adjusted, and the positions of the first adjustment structure and the second adjustment structure are fixed. After the product is delivered to the customer, on-site installation only requires adjusting the relative positions of the first frame 1 and the second frame 2 in the horizontal and vertical directions according to the positions of the first adjustment structure and the second adjustment structure, without adjusting the height and front-to-back position of the two frames, thereby ensuring that the positions of the instruments and equipment on the first frame 1 and the second frame 2 meet the usage requirements, thereby saving time and effort. The relative position of the first frame 1 and the second frame 2 in the horizontal direction refers to the relative position of the two frames in the front-to-back direction, and the relative position of the first frame 1 and the second frame 2 in the vertical direction refers to the relative position of the two frames in the height direction.

[0051] In some embodiments, as Figures 2 to 5 As shown, the quick-connect assembly 3 includes a locating pin 31 and an adjustment plate 32. The locating pin 31 is provided on the adjustment plate 32. The first adjustment structure is a first waist-shaped hole 321 provided on the adjustment plate 32, and the first waist-shaped hole 321 extends in the horizontal direction. The second adjustment structure is a second waist-shaped hole 322 provided on the adjustment plate 32, and the second waist-shaped hole 322 extends in the longitudinal direction. The adjustment plate 32 can be provided on one of the first frame 1 and the second frame, and the locating pin 31 is plugged into the other. The first waist-shaped hole 321 can be used to adjust the lateral position of the locating pin 31, thereby adjusting the relative position of the first frame 1 and the second frame 2 in the lateral direction. The second waist-shaped hole 322 can be used to adjust the longitudinal position of the locating pin 31, thereby adjusting the relative position of the first frame 1 and the second frame 2 in the longitudinal direction.

[0052] In some embodiments, as Figures 1 to 5 As shown, a positioning pin 31 is provided on the first frame 1 via an adjustment plate 32. The second frame 2 is provided with a positioning hole 21 for the positioning pin 31 to extend into. The position of the positioning pin 31 relative to the first frame 1 can be adjusted via the adjustment plate 32. Before transporting to the site, the relative positions of the first frame 1 and the second frame 2 are adjusted, and the position of the positioning pin 31 is adjusted via the adjustment plate 32. During on-site installation, the positioning pin 31 is inserted into the positioning hole 21 to maintain the first frame 1 and the second frame 2 in the previously adjusted relative position.

[0053] The quick-connect assembly 3 further includes a first screw 33 and a second screw 34 . The first screw 33 passes through the first waist-shaped hole 321 and is connected to the first frame 1 . The second screw 34 passes through the second waist-shaped hole 322 and is connected to the positioning pin 31 .

[0054] Specifically, the adjustment plate 32 can be adjusted and moved relative to the first frame 1 in a first direction through the cooperation of the first waist-shaped hole 321 and the first screw 33, and the positioning pin 31 can be adjusted and moved relative to the adjustment plate 32 in a second direction through the cooperation of the second waist-shaped hole 322 and the second screw 34. In this way, the positioning pin 31 can be adjusted and moved within the plane formed by the first and second directions, and the plane formed by the first and second directions is parallel to the plane of the first and second frames 1 and 2. The first frame 1 can be provided with a nut that cooperates with the first screw 33, and the positioning pin 31 can be provided with a threaded hole that cooperates with the second screw 34.

[0055] During factory debugging, the locating pin 31 is inserted into the locating hole 21, and the first screw 33 and the second screw 34 are not tightened first. The positions of the instrument and the two frames are adjusted first, and then the locating pin 31 and the adjustment plate 32 are locked relative to the first frame 1 by the first screw 33 and the second screw 34. The two frames are transported separately. During on-site installation, the locating pin 31 is inserted into the locating hole 21 to position the first frame 1 and the second frame 2.

[0056] In some embodiments, as Figure 4 As shown, the first direction is the horizontal direction, the second direction is the longitudinal direction, there are two first waist-shaped holes 321, and the second waist-shaped hole 322 is located between the two first waist-shaped holes 321. Specifically, the two first waist-shaped holes 321 are arranged opposite each other in the vertical direction, and the longitudinal second waist-shaped hole 322 is located in the middle of the adjustment plate 32. In this way, the adjustment plate 32 can be adjusted horizontally, and the positioning pin 31 can be adjusted longitudinally relative to the adjustment plate 32.

[0057] In some embodiments, as Figure 2 and Figure 5 As shown, the first frame 1 is provided with an escape hole 11 for the positioning pin 31 to pass through, and the adjustment plate 32 is located on the side of the escape hole 11 facing away from the second frame 2. Specifically, the first frame 1 is made of sheet metal, and the adjustment plate 32 is located on the side of the sheet metal of the first frame 1 facing away from the second frame 2 to facilitate installation. The diameter of the escape hole 11 can be slightly larger, for example, larger than 2-3 times the diameter of the positioning pin 31, to leave a larger adjustment space for the positioning pin 31, while the diameter of the positioning hole 21 is smaller than the diameter of the positioning pin 31, for example, 0.2-0.4 mm larger than the diameter of the positioning pin 31, to ensure positioning accuracy.

[0058] In some embodiments, there are multiple quick-connect assemblies 3, and quick-connect assemblies 3 are provided on both sides of the docking point between the first frame 1 and the second frame 2. In this way, when the first frame 1 and the second frame 2 are docked, the two frames are positioned and adjusted from the front and back sides of the first frame 1 and the second frame 2 to ensure that the relative positions of the two frames are accurate.

[0059] In some embodiments, quick-connect assemblies 3 are provided on both sides of the first frame 1, and positioning holes 21 are provided on both sides of the second frame 2. The distance between the centerlines of the quick-connect assemblies 3 is slightly smaller than the distance between the centerlines of the positioning holes 21. The diameter of the positioning holes 21 is larger than the diameter of the positioning pins 31, so that the distance between the centerlines of the quick-connect assemblies 3 is slightly smaller than the distance between the centerlines of the positioning holes 21, thereby preventing the positioning pins 31 from loosening with respect to the positioning holes 21.

[0060] In some embodiments, as Figure 1 As shown, the frame assembly further includes an auxiliary locking structure 4 , which is used to assist in the connection between the first frame 1 and the second frame 2 .

[0061] In some embodiments, as Figures 6 to 12 As shown, the auxiliary locking structure 4 includes a clamping mechanism and a bracket 41. The clamping mechanism includes a worm 42, a turbine 43, a screw 44, and a clamping arm 45 connected in sequence. The worm 42 is rotatably connected to the bracket 41, the turbine 43 is sleeved on the screw 44, and there are two clamping arms 45, which are arranged on opposite sides of the turbine 43 and are slidably connected to the bracket 41. The worm 42 can penetrate the bracket 41 and is rotatably connected to the bracket 41 via a bearing; the worm 42 is meshed with the turbine 43, the turbine 43 is fixedly connected to the screw 44, and the clamping arm 45 is threadedly connected to the screw 44.

[0062] When the worm 42 rotates, it drives the turbine 43 to rotate. When the turbine 43 rotates, it drives the screw 44 to rotate. When the screw 44 rotates, it drives the two clamping arms 45 to move closer to or separate from each other. When the two clamping arms 45 move closer to each other, the first frame 1 and the second frame 2 are clamped and spliced ​​together. When the two clamping arms 45 move apart, the first frame 1 and the second frame 2 are released, allowing the first frame 1 and the second frame 2 to be disassembled. The rotation of the worm 42 can be driven electrically or manually. The worm 42 and the turbine 43 have a reverse self-locking function to prevent the two clamping arms 45 clamping the two frames from automatically releasing.

[0063] In some embodiments, the threads on the screw 44 on both sides of the turbine 43 have opposite rotation directions, and the two clamping arms 45 are connected to the threads of the screw 44 with different rotation directions. In this way, the movement directions of the two clamping arms 45 can always be kept in opposite directions when the screw 44 rotates.

[0064] In some embodiments, as Figure 7 and Figure 12 As shown, the auxiliary locking structure 4 also includes a telescopic rod 46 positioned between the clamping arm 45 and the bracket 41. The clamping arm 45 is slidably connected to the bracket 41 via the telescopic rod 46. Specifically, the telescopic rod 46 guides and limits the clamping arm 45, preventing the clamping arm 45 from rotating. The telescopic rod 46 has a telescopic end and a fixed end. The fixed end of the telescopic rod 46 is fixedly connected to the bracket 41, and the telescopic end of the telescopic rod 46 is connected to the side of the clamping arm 45 facing away from the clamping surface.

[0065] In some embodiments, the clamping arm 45 is provided with a nut threadedly connected to the screw 44. The nut is sleeved on the screw 44. When the screw 44 rotates, the nut is driven to move, thereby driving the clamping arm 45. A protective pad 47 is provided on the clamping surface of the clamping arm 45 to prevent damage to the clamped frame. The protective pad 47 can be made of rubber.

[0066] In some embodiments, as Figure 6 and Figure 12 As shown, a rotating handle 48 is provided at one end of the worm 42 away from the turbine 43 , and an operator can drive the worm 42 to rotate by holding the rotating handle 48 , which is convenient for operation.

[0067] In some embodiments, the auxiliary locking structure 4 is located above or below the quick-connect assembly 3, and the two clamping arms 45 can clamp the first frame 1 and the second frame 2 after the quick-connect assembly 3 adjusts the relative positions of the first frame 1 and the second frame 2, thereby facilitating the clamping and fixing of the two frames.

[0068] In some embodiments, as Figure 1 As shown, the bottoms of the first frame 1 and the second frame 2 are both provided with height adjustment members 5, which can be level adjustment feet for adjusting the height of the frame. Specifically, a height adjustment member 5 can be provided at each of the four corners of the frame.

[0069] In the frame assembly provided by the embodiment of the present application, the locating pin 31 is installed on the adjustment plate 32 by the second screw 34, and the second screw 34 is not tightened. The adjustment plate 32 is installed on the first frame 1 by the first screw 33, and the first screw 33 is not tightened. The first frame 1 and the second frame 2 are put together, and the locating pin 31 is inserted into the locating hole 21. When there are position requirements for the instruments and equipment on the first frame 1 and the instruments and equipment on the second frame 2, the horizontal adjustment feet at the bottom of the frame are adjusted to adjust the frame height, and the front and rear positions of the first frame 1 and the second frame 2 are adjusted so that the positions of the instruments and equipment on the first frame 1 and the instruments and equipment on the second frame 2 meet the use requirements. Then, the first screw 33 and the second screw 34 are tightened, and the first frame 1 and the second frame 2 are fixed by the auxiliary locking structure 4. After debugging at the factory, the auxiliary locking structure 4 is removed, and the frame is packed and shipped. After arriving at the customer's site, the first frame 1 and the second frame 2 are put together, the locating pin 31 is inserted into the locating hole 21, and the auxiliary locking structure 4 is locked to fix the first frame 1 and the second frame 2. The installation is time-saving and labor-saving.

[0070] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for this application. In addition, it is understood that the steps in the method of the embodiment of the present application can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0071] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A frame assembly, characterized in that: include: A first frame, a second frame, and a quick-connect assembly provided between the first frame and the second frame, wherein the first frame and the second frame are detachably connected; The quick-connect assembly comprises: a first adjustment structure, for adjusting the relative position of the first frame and the second frame in the horizontal direction; The second adjustment structure is used to adjust the relative position of the first frame and the second frame in the longitudinal direction.

2. The frame assembly according to claim 1, wherein: The quick-connect assembly further includes an adjustment plate and a positioning pin provided on the adjustment plate; The first adjustment structure is a first waist-shaped hole provided on the adjustment plate, and the first waist-shaped hole extends in the transverse direction; The second adjustment structure is a second waist-shaped hole provided on the adjustment plate, and the second waist-shaped hole extends in the longitudinal direction.

3. The frame assembly according to claim 2, wherein: The quick-connect assembly also includes: A first screw and a second screw, wherein the first screw passes through the first waist-shaped hole and is connected to the first frame, and the second screw passes through the second waist-shaped hole and is connected to the positioning pin.

4. The frame assembly according to claim 3, wherein: The second frame is provided with a positioning hole for the positioning pin to be inserted when the first frame and the second frame are docked.

5. The frame assembly according to claim 1, wherein: There are multiple quick-connect assemblies, and the quick-connect assemblies are provided on both sides of the joint between the first frame and the second frame.

6. The frame assembly according to claim 4, wherein: The quick-connect components are provided on both sides of the first frame, and the positioning holes are correspondingly provided on both sides of the second frame; The distance between the center lines of the quick-connect components on both sides is slightly smaller than the distance between the center lines of the positioning holes on both sides.

7. The frame assembly according to claim 1, wherein: Also includes: The auxiliary locking structure is used to assist in the connection between the first frame and the second frame.

8. The frame assembly according to claim 7, wherein: The auxiliary locking structure includes a clamping mechanism and a bracket, the clamping mechanism includes a worm, a turbine, a screw and a clamping arm connected in sequence, the worm is rotatably connected to the bracket, the turbine is sleeved on the screw, the clamping arm has two, the two clamping arms are oppositely arranged on both sides of the turbine, and the clamping arms are slidably connected to the bracket; When the worm rotates, it drives the turbine to rotate. When the turbine rotates, it drives the screw to rotate. When the screw rotates, it drives the two clamping arms to move closer to or separate from each other.

9. The frame assembly according to claim 8, wherein: The threads on the screw rod on both sides of the turbine have opposite rotation directions; The auxiliary locking structure further includes a telescopic rod located between the clamping arm and the bracket, and the clamping arm is slidably connected to the bracket through the telescopic rod.

10. The frame assembly according to claim 8, wherein: The clamping arm is provided with a nut threadedly connected to the screw rod, and the clamping surface of the clamping arm is provided with a protective pad; A rotating handle is provided at one end of the worm away from the turbine; and / or The auxiliary locking structure is located above or below the quick-connect assembly, and the two clamping arms can clamp the first frame and the second frame after the quick-connect assembly adjusts the relative positions of the first frame and the second frame.

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