Concrete guardrail reinforcing steel bar mounting and positioning tool

Abstract

The utility model relates to the technical field of concrete guardrail construction, in particular to a concrete guardrail steel bar installing and positioning tool which comprises two frame bodies, a supporting plate is fixed to the top of the inner side of each frame body, a plurality of longitudinal bars and transverse bars are arranged between the two frame bodies, and a distance measuring ruler disc is arranged at the top of the frame body at the right end. A ranging rod is wound in the ranging rod disc, a plurality of universal wheel supporting plates are fixed to the top of each frame body, a supporting block is arranged at the bottom of each universal wheel supporting plate, a universal wheel is arranged at the bottom of each supporting block, a plurality of buckles are slidably connected to the outer portion of each supporting plate, and a positioning ring is fixed to the rear portion of each buckle. A supporting rod is connected into each positioning ring in a sliding mode, and a transverse rib supporting ring is fixed to the inner side of each supporting rod. The distance between the two buckles can be monitored through the measuring scale, so that the distance between the two transverse ribs is changed, the accuracy of fixing the transverse ribs is guaranteed, and the positioning effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete guardrail construction, in particular to a concrete guardrail reinforcement installation and positioning tool. Background Art

[0002] Concrete guardrails are important accessories to highways. Installing concrete guardrails can effectively prevent cars from running off the road, ensure the safety of drivers and passengers, and reduce the damage caused by traffic accidents.

[0003] In order to increase the life of the guardrail, steel bars need to be tied before the guardrail is cast.

[0004] However, the existing method of fixing steel bars is simply to tie the steel bars together, which is extremely inefficient. At the same time, this method cannot ensure the distance between the transverse bars during tying, and cannot ensure the level of the transverse bars, which makes the tying accuracy low, resulting in poor tying effect. In this regard, the utility model designs a concrete guardrail steel bar installation and positioning tool to solve the above problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a concrete guardrail steel bar installation and positioning tool, which effectively solves the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concrete guardrail reinforcement installation and positioning tool, comprising two frames, each of which is fixed with a support plate on the top inside the frame, each of which is fixed with a measuring ruler, and each of which is fixed with a connecting rod on the outside of the support plate through a fixing rod, each of which is fixedly connected to the frame at its bottom, a plurality of longitudinal reinforcements are provided between the two frames, a plurality of transverse reinforcements are provided inside the longitudinal reinforcements, a measuring ruler disk is provided on the top of the frame at the right end, a measuring ruler is wound inside the measuring ruler disk, and a measuring ruler is provided on the left side of the measuring ruler There are ranging buckles, a front level is fixed on the top of each frame, a side level is also fixed on the top of each frame, multiple universal wheel support plates are fixed on the top of each frame, a support block is provided at the bottom of each universal wheel support plate, a universal wheel is provided at the bottom of each support block, multiple buckles are slidably connected to the outside of each support plate, a positioning ring is fixed to the rear of each buckle, a support rod is slidably connected to the inside of each positioning ring, a transverse rib support ring is fixed on the inside of each support rod, and each transverse rib support ring is slidably connected to the transverse rib inside it.

[0007] Preferably, a connecting sub-block is fixed to the top of the frame at the left end, the right end of the connecting sub-block is fixedly connected to the ranging buckle, a ranging ring is slidably connected inside the ranging buckle, a ranging spring is fixed to the rear end of the ranging scale disk through a rotating shaft, and the other end of each ranging spring is fixedly connected to the connecting block through a fixing plate.

[0008] Preferably, each of the universal wheel support plates is meshedly connected to a rotating screw, a rotating plate is fixed to the top of each rotating screw, a rotating rod is fixed to the middle of each rotating plate, and a universal wheel positioning plate is slidably connected to the bottom of each rotating screw, and each universal wheel positioning plate is rotatably connected to a universal wheel via a rotating shaft.

[0009] Preferably, each of the universal wheel support plates is also slidably connected to a plurality of support block positioning rods, each of the support block positioning rods is fixedly connected to the support block at its bottom, a bearing is fixed inside each of the support blocks, a nut is fixed inside the inner ring of each bearing, and each of the nut can be engaged and connected with the lower end of the rotating screw.

[0010] Preferably, each of the buckles is meshedly connected to a locking screw on the outer side of each locking screw, and each of the locking screws is slidably connected to a locking plate on the inner side of each locking plate, and each locking plate can be tightly fitted into the support plate inside it, and each of the buckles is fixed to a positioning plate on the top of each positioning plate, and two clamping screws are meshedly connected to the inside of each positioning plate, and each of the clamping screws is fixed to a clamping block at the bottom through a bearing, and each of the clamping blocks can be tightly fitted into the support rod at its bottom, and each of the cross rib support rings is fixed to a support rod connecting ring on the outer side of each support rod connecting ring, and each of the support rod measuring rulers is wrapped around the inside of the support rod measuring plate, and each of the support rod measuring plate is slidably connected to a support rod measuring shaft inside, and each of the support rod measuring shafts is fixedly connected to the positioning ring at one end of each support rod measuring shaft, and one end of each support rod measuring shaft is fixed to a support rod measuring spring, and the other end of each support rod measuring spring is fixedly connected to the support rod measuring plate.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model can monitor the distance between the two buckles through the measuring ruler, thereby changing the distance between the two transverse reinforcements, thereby ensuring the accuracy of fixing the transverse reinforcements, thereby ensuring the positioning effect. At the same time, the distance between the transverse reinforcement support ring and the support plate can be monitored through the support rod measuring ruler, so that the transverse reinforcements in different positions can be adapted, thereby further ensuring the clamping effect, thereby improving the binding efficiency.

[0013] The utility model can monitor the distance between the two frames through the distance measuring ruler, and at the same time can make the distance measuring ruler tight by cooperating with the distance measuring spring and the distance measuring ruler disk, so as to change the thickness of the guardrail and ensure the accuracy of guardrail casting.

[0014] The utility model can drive the rotating screw to rotate by rotating the rotating plate, thereby allowing the universal wheel positioning plate to move upward. When the rotating screw rotates to the top, the rotating rod and the universal wheel support plate slide, and then the rotating plate will drive the nut to rotate when it rotates, thereby driving the support block to slide downward, thereby achieving the purpose of supporting the entire equipment, thereby ensuring the stability of the equipment and the positioning effect of the transverse ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached figure:

[0017] Figure 1 It is an overall schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the rear part of the utility model;

[0019] Figure 3 This is a schematic diagram of the distance measuring mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the buckle of the utility model;

[0021] Figure 5 This is a schematic diagram of the top of the buckle of the utility model;

[0022] Figure 6 This is a schematic diagram of the support block of the utility model;

[0023] Figure 7 This is a cross-sectional schematic diagram of the support block of the present invention.

[0024] In the figure: 1-frame; 2-universal wheel support plate; 3-support block; 4-longitudinal reinforcement; 5-clip; 6-connecting block; 7-support rod; 101-connecting rod; 102-support plate; 103-measuring ruler; 104-front level; 105-side level; 201-rotating plate; 202-rotating screw; 203-rotating rod; 204-universal wheel positioning plate; 205-universal wheel; 301-support block positioning rod; 302-bearing; 303-nut; 401-transverse reinforcement; 50 1-locking screw; 502-positioning plate; 503-clamping screw; 504-clamping block; 505-positioning ring; 506-locking disk; 601-connecting auxiliary block; 602-distance measuring buckle; 603-distance measuring ring; 604-distance measuring ruler; 605-distance measuring ruler disk; 606-distance measuring spring; 701-cross rib support ring; 702-support rod connecting ring; 703-support rod measuring ruler; 704-support rod measuring disk; 705-support rod measuring spring; 706-support rod measuring axis. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Embodiment 1, by Figure 1-Figure 2 、 Figure 4 、 Figure 6The utility model includes two frames 1, the frames 1 are made of alloy material, the frames 1 are used to support the entire device, and a support plate 102 is fixed to the top of the inner side of each frame 1, the support plate 102 is made of alloy material, the support plate 102 is used to fix the measuring ruler 103, and a measuring ruler 103 is fixed on each support plate 102. The measuring ruler 103 can monitor the distance between the two buckles 5, thereby changing the distance between the two transverse ribs 401, thereby ensuring the accuracy of fixing the transverse rib 401, thereby ensuring the clamping effect, and each support plate 102 is fixed with a connecting rod 101 on the outside through a fixing rod, the connecting rod 101 is made of alloy material, and the connecting rod 10 1 can ensure the stability of the support plate 102, each of the connecting rods 101 is fixedly connected to the frame 1 at its bottom, a plurality of longitudinal ribs 4 are provided between the two frames 1, and a plurality of transverse ribs 401 are provided inside the longitudinal ribs 4. A distance measuring scale plate 605 is provided on the top of the frame 1 at the right end, and the distance measuring scale plate 605 is made of alloy material. The distance measuring scale plate 605 is used to position the distance measuring scale 604. A distance measuring scale 604 is wound inside the distance measuring scale plate 605. The distance measuring scale 604 is used to measure the distance between the two frames 1, so that the thickness of the guardrail can be changed, thereby ensuring the fixing effect. A distance measuring buckle 602 is provided on the left side of the distance measuring scale 604. The distance measuring buckle 602 is made of alloy material. The distance measuring buckle 602 is convenient Remove the measuring ruler 604. A front level 104 is fixed on the top of each frame 1. A side level 105 is also fixed on the top of each frame 1. The front level 104 and the side level 105 can cooperate to monitor the horizontal degree of the frame 1, thereby further ensuring the supporting effect of the transverse rib 401. A plurality of universal wheel support plates 2 are fixed on the top of each frame 1. The universal wheel support plates 2 are made of alloy material. The universal wheel support plates 2 are used to position the rotating screw 202. A support block 3 is provided at the bottom of each universal wheel support plate 2. The support block 3 is made of alloy material. The support block 3 is used to support the entire device. A universal wheel 205 is provided at the bottom of each support block 3. 5 can drive the entire device to move by rotation. Each support plate 102 is slidably connected to a plurality of buckles 5 on the outside. The buckles 5 are made of alloy material. The buckles 5 are used to position the positioning ring 505. A positioning ring 505 is fixed to the rear of each buckle 5. The positioning ring 505 is made of alloy material. The positioning ring 505 is used to position the support rod 7. A support rod 7 is slidably connected to the inside of each positioning ring 505. The support rod 7 is made of alloy material. The support rod 7 is used to fix the transverse rib support ring 701. A transverse rib support ring 701 is fixed on the inside of each support rod 7. The transverse rib support ring 701 is made of alloy material. The transverse rib support ring 701 is used to support the transverse rib 401.Each of the transverse rib support rings 701 is slidably connected to the transverse rib 401 therein.

[0027] Example 2, based on Example 1, Figure 3 、 Figure 5 、 Figure 7It is given that a connecting sub-block 601 is fixed to the top of the frame 1 at the left end, and the connecting sub-block 601 is made of alloy material. The connecting sub-block 601 is used to fix the ranging buckle 602. The right end of the connecting sub-block 601 is fixedly connected to the ranging buckle 602. A ranging ring 603 is slidably connected inside the ranging buckle 602. The ranging ring 603 is made of alloy material. The ranging ring 603 is used to connect the ranging ruler 604 and the ranging buckle 602. The rear end of the ranging ruler disk 605 is fixed with a ranging spring 606 through a rotating shaft. The other end of each ranging spring 606 is fixedly connected to the connecting block 6 through a fixed plate. Each of the universal wheel support plates 2 is internally engaged with a rotating screw 202. The rotating screw 202 can drive the universal wheel positioning plate 204 to move up and down by rotating. A rotating plate 201 is fixed on the top of each rotating screw 202. The rotating plate 201 is made of alloy material. The rotating plate 201 is convenient for rotating the rotating screw 202. A rotating rod 203 is fixed in the middle of each rotating plate 201. The rotating rod 203 can be slidably connected with the nut 303. The bottom of each rotating screw 202 is slidably connected to the universal wheel positioning plate 204. The universal wheel positioning plate 204 is made of alloy material. The universal wheel positioning plate 204 is used to position the universal wheel 205. The interior of each universal wheel positioning plate 204 is rotatably connected to the universal wheel 205 through a rotating shaft. The universal wheel 205 is connected by rotating shaft. The rotation can drive the entire device to move. Each of the universal wheel support plates 2 is also slidably connected to a plurality of support block positioning rods 301. The support block positioning rods 301 are made of alloy material. The support block positioning rods 301 are used to position the support block 3. Each of the support block positioning rods 301 is fixedly connected to the support block 3 at its bottom. A bearing 302 is fixed inside each of the support blocks 3. The bearing 302 is used to position the nut 303. A nut 303 is fixed inside the inner ring of each bearing 302. The nut 303 can be engaged with the rotating screw 202 to enable the support block 3 to move up and down. Each nut 303 can be engaged with the lower end of the rotating screw 202. The outer surface of each buckle 5 The side is meshedly connected with a locking screw 501, and the locking screw 501 can drive the locking plate 506 to move by rotating. A locking plate 506 is slidably connected to the inside of each locking screw 501, and the locking plate 506 can fix the buckle 5 relative to the support plate 102 by moving. Each locking plate 506 can fit tightly with the support plate 102 inside it. A positioning plate 502 is fixed to the top of each buckle 5, and the positioning plate 502 is made of alloy material. The positioning plate 502 is used to position the clamping screw 503. Each positioning plate 502 is meshedly connected with two clamping screws 503 inside. The clamping screw 503 can drive the clamping block 504 to move up and down by rotating up and down.A clamping block 504 is fixed to the bottom of each clamping screw 503 through a bearing, and the clamping block 504 is used to position the support rod 7. Each clamping block 504 can fit tightly with the support rod 7 at its bottom. A support rod connecting ring 702 is fixed to the outside of each transverse reinforcement support ring 701. The support rod connecting ring 702 is used to connect the transverse reinforcement support ring 701 and the support rod measuring ruler 703. A support rod measuring ruler 703 is fixed to the outside of each support rod connecting ring 702. The support rod measuring ruler 703 is used to measure the extended size of the support rod 7. The outer side is wrapped around the inside of the support rod measuring disk 704, and each support rod measuring disk 704 is slidably connected to a support rod measuring shaft 706. The support rod measuring shaft 706 is used to position the support rod measuring disk 704, and each support rod measuring shaft 706 is fixedly connected to the positioning ring 505 at one end thereof. A support rod measuring spring 705 is fixed to one end of each support rod measuring shaft 706. The support rod measuring spring 705 is elastic, so that the support rod measuring ruler 703 is always taut, and the other end of each support rod measuring spring 705 is fixedly connected to the support rod measuring disk 704;

[0028] When using this equipment, the staff can drive the rotating screw 202 to rotate by rotating the rotating plate 201, thereby driving the universal wheel positioning plate 204 to move downward, thereby driving the universal wheel 205 to move downward, so that the frame 1 is separated from the ground, and the staff further pushes the entire equipment to move. When the entire equipment moves to the position where the steel guardrail is required to be installed, the staff rotates multiple rotating plates 201 in the opposite direction, thereby driving the rotating screw 202 to rotate upward, thereby driving the universal wheel positioning plate 204 to move upward, thereby driving the universal wheel 205 to move upward, so that the frame 1 is in close contact with the ground, and further the staff uses the front level 104 and the side level The instrument 105 can monitor whether the frame 1 is level. If it is not level, the staff controls the multiple rotating plates 201 to work together, thereby driving the multiple rotating screws 202 to continue to rotate upward. When the rotating screws 202 rotate to the point where the rotating rods 203 are slidably connected with the universal wheel support plate 2, the staff continues to rotate the rotating plate 201. At this time, due to the action of the universal wheel support plate 2, the rotating rod 203 can be pushed to fit tightly against the lower end of the rotating plate 201. Then, when the rotating plate 201 is rotated, the rotating rod 203 rotates downward, causing the support block 3 to slide downward, thereby causing the support block 3 to fit closely to the ground, thereby lifting the four angles of the frame 1 as needed, thereby being able to change the height as needed. The angle between the frame 1 and the ground is adjusted so that the entire device remains horizontal. The staff further controls the second frame 1 to move to the opposite side of the first frame 1. The staff further connects the distance measuring buckle 602 and the distance measuring ring 603, thereby connecting the two frames 1 through the distance measuring ruler 604. The staff further monitors the thickness of the guardrail by moving the second frame 1 and the distance measuring ruler 604. The staff further controls the second rotating plate 201 to stabilize the second frame 1. At this time, the staff installs multiple buckles 5 on the rear of the support plate 102 according to the size of the measuring ruler 103. The staff further uses multiple locking screws 501 to lock the cards The buckle 5 is fixed to the support plate 102, and the staff further puts the support rod 7 into the positioning ring 505 in turn. The staff further moves the support rod 7 according to needs. At this time, the distance between the transverse reinforcement support ring 701 and the positioning ring 505 can be monitored by the support rod measuring ruler 703. When the transverse reinforcement support ring 701 reaches the required position, the staff controls the clamping screw 503 so that the clamping block 504 clamps the support rod 7. At this time, the staff puts the transverse reinforcement 401 into the transverse reinforcement support ring 701, thereby achieving the purpose of positioning the transverse reinforcement 401, thereby facilitating subsequent binding work, thereby ensuring the stability and accuracy of the transverse reinforcement 401 during binding.

[0029] The working process of the present invention is as follows: when using the device, the staff can drive the rotating screw 202 to rotate by rotating the rotating plate 201, thereby driving the universal wheel positioning plate 204 to move downward, thereby driving the universal wheel 205 to move downward, so that the frame 1 is separated from the ground, and the staff further pushes the entire device to move. When the entire device moves to the position where the steel guardrail is required to be installed, the staff reversely rotates the plurality of rotating plates 201, thereby driving the rotating screw 202 to rotate upward, thereby driving the universal wheel positioning plate 204 to move upward, thereby driving the universal wheel 205 to move upward, so that the frame 1 is in close contact with the ground, and further the staff uses the front level to adjust the height of the frame 1. 104 and the side level 105 can monitor whether the frame 1 is level. If it is not level, the staff controls the multiple rotating plates 201 to work together, thereby driving the multiple rotating screws 202 to continue to rotate upward. When the rotating screws 202 rotate to the point where the rotating rods 203 are slidably connected with the universal wheel support plate 2, the staff continues to rotate the rotating plate 201. At this time, due to the action of the universal wheel support plate 2, the rotating rod 203 can be pushed to fit tightly against the lower end of the rotating plate 201. Then, when the rotating plate 201 is rotated, the rotating rod 203 rotates downward, causing the support block 3 to slide downward, thereby causing the support block 3 to fit closely to the ground, thereby lifting the four parts of the frame 1 as needed, so that According to the needs, the angle between the frame 1 and the ground is changed so that the whole equipment is kept level. The staff further controls the second frame 1 to move to the opposite side of the first frame 1. The staff further connects the distance measuring buckle 602 and the distance measuring ring 603, so that the two frames 1 are connected through the distance measuring ruler 604. The staff further monitors the thickness of the guardrail by moving the second frame 1 and the distance measuring ruler 604. The staff further controls the second rotating plate 201 to stabilize the second frame 1. At this time, the staff installs multiple buckles 5 on the rear of the support plate 102 according to the size of the measuring ruler 103. The staff further uses multiple locking screws 501 to make The buckle 5 is fixed to the support plate 102, and the staff further puts the support rod 7 into the positioning ring 505 in turn. The staff further moves the support rod 7 according to needs. At this time, the distance between the transverse reinforcement support ring 701 and the positioning ring 505 can be monitored by the support rod measuring ruler 703. When the transverse reinforcement support ring 701 reaches the required position, the staff controls the clamping screw 503 so that the clamping block 504 clamps the support rod 7. At this time, the staff puts the transverse reinforcement 401 into the transverse reinforcement support ring 701, thereby achieving the purpose of positioning the transverse reinforcement 401, thereby facilitating subsequent binding work, thereby ensuring the stability and accuracy of the transverse reinforcement 401 during binding.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Concrete guardrail reinforcement installation and positioning tool, characterized by: The invention comprises two frames (1), wherein a support plate (102) is fixed on the inner top of each frame (1), a measuring ruler (103) is fixed on each support plate (102), a connecting rod (101) is fixed on the outer side of each support plate (102) through a fixing rod, and each connecting rod (101) is fixedly connected to the frame (1) at its bottom, a plurality of longitudinal ribs (4) are provided between the two frames (1), a transverse rib (401) is provided on the inner side of the plurality of longitudinal ribs (4), a measuring ruler disk (605) is provided on the top of the right frame (1), a measuring ruler (604) is wound inside the measuring ruler disk (605), a measuring buckle (602) is provided on the left side of the measuring ruler (604), and a plurality of longitudinal ribs (4) are provided between the two frames (1). A front level (104) is fixed, and a side level (105) is also fixed on the top of each frame (1). A plurality of universal wheel support plates (2) are fixed on the top of each frame (1), and a support block (3) is provided at the bottom of each universal wheel support plate (2). A universal wheel (205) is provided at the bottom of each support block (3). A plurality of buckles (5) are slidably connected to the outside of each support plate (102), and a positioning ring (505) is fixed at the rear of each buckle (5). A support rod (7) is slidably connected to the inside of each positioning ring (505), and a transverse rib support ring (701) is fixed on the inside of each support rod (7). Each transverse rib support ring (701) is slidably connected to the transverse rib (401) inside it.

2. The concrete guardrail reinforcement installation and positioning tool according to claim 1, characterized in that: A connecting sub-block (601) is fixed to the top of the frame (1) at the left end, the right end of the connecting sub-block (601) is fixedly connected to the distance measuring buckle (602), a distance measuring ring (603) is slidably connected inside the distance measuring buckle (602), a distance measuring spring (606) is fixed to the rear end of the distance measuring scale disk (605) via a rotating shaft, and the other end of each distance measuring spring (606) is fixedly connected to the connecting block (6) via a fixing plate.

3. The concrete guardrail reinforcement installation and positioning tool according to claim 1, characterized in that: Each universal wheel support plate (2) is internally meshed with a rotating screw (202), a rotating plate (201) is fixed to the top of each rotating screw (202), a rotating rod (203) is fixed to the middle of each rotating plate (201), and a universal wheel positioning plate (204) is slidably connected to the bottom of each rotating screw (202), and a universal wheel (205) is internally rotatably connected to each universal wheel positioning plate (204) via a rotating shaft.

4. The concrete guardrail reinforcement installation and positioning tool according to claim 3, characterized in that: A plurality of support block positioning rods (301) are also slidably connected inside each universal wheel support plate (2), each support block positioning rod (301) is fixedly connected to the support block (3) at its bottom, a bearing (302) is fixed inside each support block (3), a nut (303) is fixed inside the inner ring of each bearing (302), and each nut (303) can be meshed and connected with the lower end of the rotating screw (202).

5. The concrete guardrail reinforcement installation and positioning tool according to claim 1, characterized in that: Each of the buckles (5) is meshedly connected to a locking screw (501) on the outside, and each of the locking screws (501) is slidably connected to a locking plate (506) on the inside, and each of the locking plates (506) can fit tightly with the support plate (102) on the inside thereof. A positioning plate (502) is fixed on the top of each of the buckles (5), and each of the positioning plates (502) is meshedly connected to two clamping screws (503) on the inside, and a clamping block (504) is fixed to the bottom of each of the clamping screws (503) through a bearing, and each of the clamping blocks (504) can fit tightly with the support rod (7) at the bottom thereof. The outside of each of the transverse rib support rings (701) is fixed to a positioning plate (502). A support rod connecting ring (702) is fixed, a support rod measuring ruler (703) is fixed on the outside of each support rod connecting ring (702), the outside of each support rod measuring ruler (703) is wound around the inside of a support rod measuring disk (704), a support rod measuring shaft (706) is slidably connected inside each support rod measuring disk (704), each support rod measuring shaft (706) is fixedly connected to the positioning ring (505) at one end thereof, a support rod measuring spring (705) is fixedly connected to one end of each support rod measuring shaft (706), and the other end of each support rod measuring spring (705) is fixedly connected to the support rod measuring disk (704).

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