Frame wall column construction site positioning device

By designing a frame wall column construction site positioning device including positioning fixing device and support adjustment components, the problem of the angle of the frame wall column positioning device in the prior art is easily deformed and unable to effectively support, and higher positioning accuracy and stability, as well as stronger support functions are achieved.

CN222949510UActive Publication Date: 2025-06-06THE FIRST CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU
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Patent Information

Application Number
CN202422166456.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-04
Publication Date
2025-06-06
Estimated Expiration
2034-09-04

AI Technical Summary

Technical Problem

In the prior art, the angle of the frame wall column positioning device is prone to deform, and cannot effectively support the frame wall column, resulting in a decrease in positioning accuracy and stability, and the frame wall column is prone to deformation.

Method used

A frame wall column construction site positioning device is designed, including a device base, a positioning fixing device, a support adjustment component and a positioning adjustment component. Positioning is performed by the relative movement of the vertical positioning rod and the transverse positioning rod, and the connection between the positioning adjustment assembly and the fixed driving assembly ensures the stable positioning of the frame wall column. At the same time, by cooperating with the support adjustment components and the transverse positioning rod, the frame wall columns are supported on the front and rear sides, and the support angle is adjusted to adapt to the special-shaped frame wall columns.

Benefits of technology

It improves the accuracy and stability of the positioning of frame wall columns, prevents movement and deformation of the positioned frame wall columns, enhances the support function for frame wall columns, and adapts to frame wall columns of different specifications.

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Abstract

The utility model discloses a frame wall column construction site positioning device, which relates to the technical field of frame wall column positioning and comprises a device base, a positioning and fixing device is arranged at the top end of the device base, two supporting and adjusting components are arranged at the top end of the positioning and fixing device, and the bottom end of the device base is fixedly connected to the ground. A positioning opening is formed in the middle of the device base. The frame wall column is ensured to be located in the middle of the positioning opening through linkage of the positioning adjusting assembly and the fixed driving assembly, the second threaded column is controlled through the rotating column to adjust the transverse positioning rod and the vertical positioning rod, the effect after positioning is prevented from moving, the convenience and accuracy of the device are improved, and the practicability is high. And the supporting angle of the supporting plate can be adjusted by rotating the hinge, the supporting rod and the fixing rod enable the supporting rod to drive the supporting column to conduct multi-angle supporting on the supporting plate through linkage of the first movable lantern ring and the second movable lantern ring, the supporting function of the device is increased, and the adjustability of the supporting function is improved.
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Description

Technical Field

[0001] The utility model relates to a frame wall column construction site positioning device, relates to the frame wall column positioning technical field, and specifically relates to a frame wall column construction site positioning device. Background Art

[0002] Frame wall columns are an important part of frame structure buildings. They are usually made of reinforced concrete and play the role of bearing vertical loads and resisting horizontal loads in buildings. During the construction process, the frame wall column construction site positioning device can ensure the position accuracy of the wall columns, avoid uneven structural force due to deviations, and affect the overall stability of the building.

[0003] The existing technology has the following problems:

[0004] In the prior art, the positioning of frame wall columns usually requires workers to relatively fix four wooden strips around the frame wall columns. During the process of fixing the wooden strips, the angles between the fixed wooden strips are easily changed, resulting in the inability to stably support and position the frame wall columns all around, reducing the accuracy and stability of the positioning of the frame wall columns. In addition, the simple positioning device for manual fixing cannot support the frame wall columns, causing the frame wall columns to easily deform. Utility Model Content

[0005] The utility model provides a frame wall column construction site positioning device, one purpose of which is to have adaptive adjustment to frame wall columns of different specifications to solve the problem of easy angle deformation; another purpose is to solve the problem of inability to support the frame wall columns, so as to achieve the effect of horizontally supporting the frame wall columns.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A frame wall column construction site positioning device comprises a device base, a positioning and fixing device is arranged at the top of the device base, two supporting and adjusting components are arranged at the top of the positioning and fixing device, the bottom end of the device base is fixedly connected to the ground, and a positioning opening is opened in the middle of the device base.

[0008] A further improvement of the technical solution of the utility model is that the device base includes a base body, the front side and the right side of the top of the base body are both provided with movable grooves, the rear side and the left side of the top of the base body are both provided with adjustment grooves, and the two movable grooves and the adjustment groove are perpendicular to each other.

[0009] A further improvement of the technical solution of the utility model is that: a movable column is fixedly connected in the movable groove, a positioning and adjustment assembly is arranged on the inner side of the adjustment groove, the outer surface of the movable column on the right side is slidably connected to two front-to-rear parallel transverse positioning rods, the left end of the transverse positioning rod is threadedly connected to the outer surface of the left positioning and adjustment assembly, the transverse positioning rod is provided with a movable groove running through the front and rear, the outer surface of the movable column on the front side is slidably connected to two left-to-right parallel vertical positioning rods, the rear end of the vertical positioning rod is threadedly connected to the outer surface of the rear positioning and adjustment assembly through the movable groove, and a fixed driving assembly is arranged in the middle of the positioning and adjustment assembly.

[0010] A further improvement of the technical solution of the utility model lies in that: the positioning adjustment component includes a driven bevel gear, a threaded column 2 is fixedly connected to the middle of one end of the driven bevel gear away from the fixed driving component, the end of the threaded column 2 away from the driven bevel gear is rotatably connected to the inner side of the adjustment groove, a threaded column 1 is fixedly connected to the middle of one end of the driven bevel gear away from the threaded column 2, the end of the threaded column 1 away from the driven bevel gear is rotatably connected to the inner side, and the thread directions of the threaded column 1 and the threaded column 2 are opposite.

[0011] A further improvement of the technical solution of the utility model is that: the fixed driving component includes a driving bevel gear, one side of the driving bevel gear is meshed and connected to the driven bevel gear, the end of the driving bevel gear away from the driven bevel gear is fixedly connected to a rotating column, the outer surface of the rotating column is rotatably connected to the inside of the base body, a plurality of fixed grooves are opened on the outer surface of the rotating column, an insertion hole is provided on the upper side of the rotating column, the insertion hole is opened at the top of the base body, the insertion hole is connected to the fixed groove, a fixed column is slidably connected in the insertion hole, and the fixed column can enter the fixed groove and fit tightly therewith.

[0012] A further improvement of the technical solution of the utility model is that: the support and adjustment component includes a support plate, two rotating hinges are fixedly connected to the bottom side of one end of the support plate close to the transverse positioning rod, the end of the rotating hinge away from the support plate is fixedly connected to the top side of the transverse positioning rod, and two left and right parallel linkage adjustment components are arranged on one side of the support plate close to the transverse positioning rod, and the top ends of the opposite sides of the two linkage adjustment components are commonly fixedly connected to a support column.

[0013] The camming mechanism that is formed on the upper and lower ends of the support frame is a bottom end of a crank which is fixedly connected to the support frame by the spring which is fixed on the upper and lower ends of the support frame.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] 1. The utility model provides a construction site positioning device for a frame wall column, which can position the frame wall column in the middle of the device base through the relative movement of the vertical positioning rod and the horizontal positioning rod, ensure that the frame wall column can be located in the middle of the positioning opening through the linkage of the positioning adjustment component and the fixed drive component, and can adjust the horizontal positioning rod and the vertical positioning rod by controlling the threaded column two through the rotating column, and then fix the positional relationship between the vertical positioning rod and the horizontal positioning rod through the cooperation of the fixing groove and the fixing column, so as to prevent the effect after positioning from moving, and improve the convenience and accuracy of positioning of the device.

[0016] 2. The utility model provides a frame wall column construction site positioning device, which can support the front and rear sides of the frame wall column by cooperating with the support adjustment component and the horizontal positioning rod, and can adjust the support angle of the support plate by rotating the hinge to support special frame wall columns, and cooperate with the linkage adjustment component and the support column to limit the position of the support plate and provide supporting force. The support rod and the fixed rod are linked by the moving ring 1 and the moving ring 2 so that the support rod can drive the support column to support the support plate at multiple angles, and cooperate with the fixed block and the limit groove to fix the position relationship, thereby increasing the supporting function of the device and improving the adjustability of the supporting function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the positioning and fixing device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixed drive assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the support and adjustment component of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the linkage adjustment component of the utility model.

[0022] In the figure: 1. support and adjustment component; 11. support plate; 12. linkage adjustment component; 121. support rod; 122. movable collar 1; 123. movable collar 2; 124. rotating disk; 125. limiting groove; 126. support block 1; 127. fixed rod; 128. support block 2; 129. fixed block; 13. rotating hinge; 14. support column; 2. positioning and fixing device; 21. vertical positioning rod; 22. horizontal positioning rod; 23. positioning and adjustment component; 231. threaded column 1; 232. driven bevel gear; 233. threaded column 2; 24. fixed drive component; 241. insertion hole; 242. fixed column; 243. fixed groove; 244. rotating column; 245. driving bevel gear; 25. movable column; 3. device base; 31. movable groove; 32. base body; 33. adjustment groove. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0024] like Figure 1-5 As shown, the utility model provides a frame wall column construction site positioning device, including a device base 3, a positioning and fixing device 2 is arranged on the top of the device base 3, two supporting and adjusting components 1 are arranged on the top of the positioning and fixing device 2, the bottom end of the device base 3 is fixedly connected to the ground, and a positioning opening is opened in the middle of the device base 3.

[0025] The bottom end of the device base 3 is fixedly connected to the ground to fix and support the entire device. The positioning hole opened in the middle of the device base 3 is used to accommodate the frame wall column. The positioning and fixing device 2 is used to position and fix the frame wall column. The two support adjustment components 1 are used to support the front and rear sides of the frame wall column. The support angle can be adjusted to adapt to special frame wall columns.

[0026] like Figure 2 As shown, the utility model provides a technical solution for a frame wall column construction site positioning device: preferably, the device base 3 includes a base body 32, and movable grooves 31 are opened on the front side and the right side of the top of the base body 32, and adjustment grooves 33 are opened on the rear side and the left side of the top of the base body 32, and the two movable grooves 31 and the adjustment grooves 33 are perpendicular to each other.

[0027] The base body 32 is the main part of the device base 3. The movable groove 31 and the adjustment groove 33 provide space and tracks for the installation and operation of the components of the subsequent positioning and fixing device 2. The two movable grooves 31 and the adjustment grooves 33 are designed to be perpendicular to each other, so that the components installed therein can be moved and adjusted in directions perpendicular to each other, thereby realizing the function of positioning and fixing the frame wall columns from different directions.

[0028] like Figure 2 As shown, the utility model provides a technical solution for a positioning device for a frame wall column construction site: preferably, a moving column 25 is fixedly connected in the moving groove 31, a positioning and adjusting assembly 23 is arranged on the inner side of the adjusting groove 33, and two front-to-rear parallel transverse positioning rods 22 are slidably connected to the outer surface of the right moving column 25, the left end of the transverse positioning rod 22 is threadedly connected to the outer surface of the left positioning and adjusting assembly 23, and the transverse positioning rod 22 is provided with a movable groove running through the front and rear, and two left-to-right parallel vertical positioning rods 21 are slidably connected to the outer surface of the front moving column 25, and the rear end of the vertical positioning rod 21 is threadedly connected to the outer surface of the rear positioning and adjusting assembly 23 through a movable groove, and a fixed driving assembly 24 is arranged in the middle of the positioning and adjusting assembly 23.

[0029] The movable column 25 in the movable groove 31 provides a sliding track for the transverse positioning rod 22, so that the two front-to-back parallel transverse positioning rods 22 on the right side can slide on the movable column 25. At the same time, the left end of the transverse positioning rod 22 is threadedly connected to the outer surface of the positioning adjustment component 23 on the left. The transverse positioning rod 22 can be moved left and right by adjusting the positioning adjustment component 23, so as to position the frame wall column from the left and right directions. The vertical positioning rod 21 can be moved forward and backward by adjusting the positioning adjustment component 23, so as to position the frame wall column from the front-to-back directions. The movable groove provides a movable space for the vertical positioning rod 21.

[0030] like Figure 2-3 As shown, the utility model provides a technical solution for a positioning device for a frame wall column construction site: preferably, the positioning and adjusting component 23 includes a driven bevel gear 232, and a threaded column 233 is fixedly connected to the middle of one end of the driven bevel gear 232 away from the fixed drive component 24, and the end of the threaded column 233 away from the driven bevel gear 232 is rotatably connected to the inner side of the adjustment groove 33, and a threaded column 1 231 is fixedly connected to the middle of one end of the driven bevel gear 232 away from the threaded column 233, and the end of the threaded column 1 231 away from the driven bevel gear 232 is rotatably connected to the inner side of the adjustment groove 33, and the thread directions of the threaded column 1 231 and the threaded column 2 233 are opposite.

[0031] When the fixed driving assembly 24 drives the driven bevel gear 232 to rotate, since the threaded column 1 231 and the threaded column 233 have opposite thread directions, the components threadedly connected to the threaded column 1 231 and the threaded column 233 will move in opposite directions.

[0032] like Figure 3 As shown, the utility model provides a technical solution for a frame wall column construction site positioning device: preferably, the fixed driving component 24 includes a driving bevel gear 245, one side of the driving bevel gear 245 is meshed and connected to the driven bevel gear 232, and the end of the driving bevel gear 245 away from the driven bevel gear 232 is fixedly connected to a rotating column 244, the outer surface of the rotating column 244 is rotatably connected to the inside of the base body 32, and a plurality of fixed grooves 243 are provided on the outer surface of the rotating column 244, and an insertion hole 241 is provided on the upper side of the rotating column 244, the insertion hole 241 is opened at the top of the base body 32, the insertion hole 241 is connected to the fixing groove 243, and a fixing column 242 is slidably connected in the insertion hole 241, and the fixing column 242 can enter the fixing groove 243 and fit tightly therewith.

[0033] By rotating the rotating column 244, the driving bevel gear 245 can be driven to rotate, and then the driven bevel gear 232 can be driven to rotate. When the rotating column 244 is rotated to a suitable position, so that the horizontal positioning rod 22 and the vertical positioning rod 21 have completed the positioning of the frame wall column, the fixed column 242 is slid downward into the fixed groove 243 and fits tightly therewith to prevent the rotating column 244 from rotating, thereby fixing the position of the horizontal positioning rod 22 and the vertical positioning rod 21, preventing the frame wall column from moving after positioning, and ensuring the stability of positioning.

[0034] like Figure 4 As shown, the utility model provides a technical solution for a frame wall column construction site positioning device: preferably, the support adjustment component 1 includes a support plate 11, and two rotating hinges 13 are fixedly connected to the bottom side of one end of the support plate 11 close to the transverse positioning rod 22, and the end of the rotating hinge 13 away from the support plate 11 is fixedly connected to the top side of the transverse positioning rod 22, and two left and right parallel linked adjustment components 12 are arranged on the side of the support plate 11 close to the transverse positioning rod 22, and the top ends of the opposite sides of the two linked adjustment components 12 are commonly fixedly connected with a support column 14.

[0035] The rotating hinge 13 enables the support plate 11 to rotate around the transverse positioning rod 22, adjusting the support angle of the support plate 11 to adapt to frame wall columns of special shapes or requirements and provide better support for them. The linkage adjustment component 12 and the support column 14 cooperate with each other to limit the position of the support plate 11 and provide supporting force for the support plate 11. When the support plate 11 is subjected to pressure from the frame wall column, the pressure is transmitted to the linkage adjustment component 12 through the support column 14, and then transmitted to the transverse positioning rod 22 by the linkage adjustment component 12, thereby achieving support for the front and rear sides of the frame wall column and preventing the frame wall column from deformation.

[0036] like Figure 4-5As shown, the utility model provides a technical solution for a frame wall column construction site positioning device: preferably, the linkage adjustment component 12 includes a support rod 121, and the top ends of the two support rods 121 on opposite sides are respectively fixedly connected to the left and right ends of the support column 14, and the end of the support rod 121 away from the support column 14 is rotatably connected to a support block 126, and the bottom end of the support block 126 is fixedly connected to the top of the horizontal positioning rod 22. The outer surface of the support rod 121 is sleeved with a movable ring 122, and the end of the movable ring 122 away from the support rod 121 is rotatably connected to a rotating disk 124, which rotates One end of the turntable 124 away from the movable sleeve 122 is rotatably connected to the movable sleeve 123, and a fixing rod 127 is sleeved on the inner side of the movable sleeve 123. The fixing rod 127 is provided with a plurality of limit grooves 125 running through the left and right sides. One end of the movable sleeve 123 away from the rotating disk 124 is provided with a fixing opening which is the same as the limit groove 125, and a fixing block 129 is movably connected in the fixing opening. One end of the fixing rod 127 away from the movable sleeve 123 is rotatably connected to the supporting block 128, and the bottom end of the supporting block 128 is fixedly connected to the top of the transverse positioning rod 22.

[0037] When the angle of the support rod 121 needs to be adjusted, the support block 126 acts as a support to provide support for the rotation adjustment of the support rod 121, and while the support rod 121 is adjusted, the fixed rod 127 is driven to rotate together through the connection between the movable ring 122 and the movable ring 2 123. Due to the rotation connection between the rotating disk 124 and the movable ring 2 123 and the movable ring 1 122, the support rod 121 and the fixed rod 127 can rotate according to the rotating disk 124 during the rotation process, and cooperate with the movable ring 2 123 and the movable ring 1 122 to slide on the outer surfaces of the fixed rod 127 and the support rod 121 to adapt to the angle change, so as to drive the support column 14 to move its position. After the movement, the fixed block 129 can enter the fixing port and the limiting groove 125 to fix the movable ring 2 123 and the fixed rod 127 as a whole to prevent the movable ring 2 123 from sliding, thereby fixing the position of the support rod 121.

[0038] The following is a detailed description of the working principle of this frame wall column construction site positioning device.

[0039] like Figure 1-5As shown, the device base 3 is sleeved from the top of the frame wall column to the bottom of the outer surface of the frame wall column, and the rotating column 244 is rotated according to the specifications of the frame wall column. The rotating column 244 drives the driving bevel gear 245 to rotate, and the driving bevel gear 245 engages with the driven bevel gear 232 to rotate, so that the threaded column 1 231 and the threaded column 233 are rotated. The thread directions of the threaded column 1 231 and the threaded column 233 are opposite, driving the horizontal positioning rod 22 and the vertical positioning rod 21 to move, and the frame wall column is positioned so that it is located in the middle of the positioning port. After the positioning is completed, the fixing column 242 is inserted into the fixing groove 243 of the rotating column 244 through the insertion hole 241, and is tightly fixed to prevent the horizontal positioning rod 22 and the vertical positioning rod 21 from moving;

[0040] Move the movable sleeve 122 and the movable sleeve 2 123 to change the relative positions of the support rod 121 and the fixed rod 127, and drive the support column 14 to support the support plate 11 at multiple angles. When the movable sleeve 2 123 moves to a suitable position, insert the fixed block 129 into the fixed opening and the corresponding limit groove 125 to fix the position of the movable sleeve 2 123 and the position of the support column 14, thereby supporting the frame wall column and preventing the frame wall column from being deformed after being finalized. After the frame wall column is built, the device is removed from the ground and taken out from above the frame wall column.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A frame wall column construction site positioning device, comprising a device base (3), characterized in that: A positioning and fixing device (2) is arranged at the top of the device base (3), two supporting and adjusting components (1) are arranged at the top of the positioning and fixing device (2), the bottom of the device base (3) is fixedly connected to the ground, and a positioning opening is opened in the middle of the device base (3).

2. A frame wall column construction site positioning device according to claim 1, characterized in that: The device base (3) comprises a base body (32), wherein the top front side and the right side of the base body (32) are both provided with movable grooves (31), and the top rear side and the left side of the base body (32) are both provided with adjustment grooves (33), and the two movable grooves (31) and the adjustment grooves (33) are perpendicular to each other.

3. A frame wall column construction site positioning device according to claim 2, characterized in that: A moving column (25) is fixedly connected in the moving groove (31), and a positioning and adjusting assembly (23) is arranged inside the adjusting groove (33). Two front-to-rear parallel transverse positioning rods (22) are slidably connected to the outer surface of the right moving column (25), and the left end of the transverse positioning rod (22) is threadedly connected to the outer surface of the left positioning and adjusting assembly (23). The transverse positioning rod (22) is provided with a movable groove running through the front and rear. Two left-to-right parallel vertical positioning rods (21) are slidably connected to the outer surface of the front moving column (25), and the rear end of the vertical positioning rod (21) is threadedly connected to the outer surface of the rear positioning and adjusting assembly (23) through the movable groove. A fixed driving assembly (24) is arranged in the middle of the positioning and adjusting assembly (23).

4. A frame wall column construction site positioning device according to claim 3, characterized in that: The positioning adjustment component (23) comprises a driven bevel gear (232), a second threaded column (233) being fixedly connected to the middle of one end of the driven bevel gear (232) away from the fixed drive component (24), an end of the second threaded column (233) away from the driven bevel gear (232) being rotatably connected to the inner side of the adjustment groove (33), a first threaded column (231) being fixedly connected to the middle of one end of the driven bevel gear (232) away from the second threaded column (233), an end of the first threaded column (231) away from the driven bevel gear (232) being rotatably connected to the inner side of the adjustment groove (33), and the thread directions of the first threaded column (231) and the second threaded column (233) are opposite.

5. A frame wall column construction site positioning device according to claim 4, characterized in that: The fixed drive assembly (24) comprises a driving bevel gear (245), one side of the driving bevel gear (245) is meshedly connected to the driven bevel gear (232), one end of the driving bevel gear (245) away from the driven bevel gear (232) is fixedly connected to a rotating column (244), the outer surface of the rotating column (244) is rotatably connected to the inside of the base body (32), the outer surface of the rotating column (244) is provided with a plurality of fixing grooves (243), the upper side of the rotating column (244) is provided with an insertion hole (241), the insertion hole (241) is provided at the top of the base body (32), the insertion hole (241) is connected to the fixing groove (243), the fixing column (242) is slidably connected in the insertion hole (241), and the fixing column (242) can enter the fixing groove (243) and fit closely therewith.

6. A frame wall column construction site positioning device according to claim 3, characterized in that: The support adjustment component (1) comprises a support plate (11), wherein two rotary hinges (13) are fixedly connected to the bottom side of one end of the support plate (11) close to the transverse positioning rod (22), and one end of the rotary hinge (13) away from the support plate (11) is fixedly connected to the top side of the transverse positioning rod (22). Two left and right parallel linkage adjustment components (12) are arranged on one side of the support plate (11) close to the transverse positioning rod (22), and the top ends of the two linkage adjustment components (12) on opposite sides are fixedly connected to a support column (14).

7. A frame wall column construction site positioning device according to claim 6, characterized in that: The linkage adjustment assembly (12) comprises a support rod (121), the top ends of the two support rods (121) on opposite sides are respectively fixedly connected to the left and right ends of the support column (14), one end of the support rod (121) away from the support column (14) is rotatably connected to a support block (126), the bottom end of the support block (126) is fixedly connected to the top end of the transverse positioning rod (22), the outer surface of the support rod (121) is sleeved with a movable collar (122), the end of the movable collar (122) away from the support rod (121) is rotatably connected to a rotating disk (124), and the rotating disk (124) away from the movable collar (122) is rotatably connected to the rotating disk (124). ) is rotatably connected to a movable sleeve ring 2 (123); a fixing rod (127) is sleeved on the inner side of the movable sleeve ring 2 (123); the fixing rod (127) is provided with a plurality of limit grooves (125) extending through the left and right sides; an end of the movable sleeve ring 2 (123) away from the rotating disk (124) is provided with a fixing opening identical to the limit grooves (125); a fixing block (129) is movably connected in the fixing opening; an end of the fixing rod (127) away from the movable sleeve ring 2 (123) is rotatably connected to a supporting block 2 (128); the bottom end of the supporting block 2 (128) is fixedly connected to the top end of the transverse positioning rod (22).