Anti-floating anchor rod structure and positioning clamp

Abstract

The utility model discloses an anti-floating anchor rod structure, a locating clamp and a construction method.The anti-floating anchor rod structure comprises a vertically-arranged water stopping barrel, the water stopping barrel is cylindrical and used for being tightly inserted into an anchor hole, an anchor rod assembly is arranged in the water stopping barrel in a penetrating mode, and limiting pieces are arranged at the two ends of the water stopping barrel respectively; the two limiting pieces are used for limiting the anchor rod assembly together so that the anchor rod assembly can be located in the middle of the water stop cylinder. Each limiting piece comprises a plurality of horizontally-arranged limiting steel bars, every two adjacent limiting steel bars are welded and fixed, the two ends of the multiple limiting steel bars are welded and fixed to the inner wall of the water stop cylinder, and limiting holes tightly matched with the anchor rod assembly are formed in the middles of the multiple limiting steel bars. The anchor rod assembly can be centered in the anchor hole, so that accurate positioning of the top position of the anchor rod assembly is realized, and subsequent construction operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of anti-buoyancy anchor bolts, and in particular to an anti-buoyancy anchor bolt structure and positioning clamp. Background Technology

[0002] Anti-buoyancy anchors are a type of anti-buoyancy measure for underground structures in building engineering. Anti-buoyancy anchors refer to structural components installed to resist the upward displacement of buildings above them. They are related to the level and changes of groundwater and are in the opposite direction of force to compression piles.

[0003] In related technologies, anti-buoyancy anchors are typically made by welding multiple steel bars to form an anchor assembly. The anchor assembly is inserted into the anchor hole of the building, and concrete is poured into the anchor hole. After the concrete has cured, the connection between the anti-buoyancy anchor and the building is achieved.

[0004] However, during construction, the anchor bolt assembly in the relevant technology cannot guarantee that it will be centered in the anchor hole, which makes the position of the top of the anchor bolt assembly prone to deviation, thus affecting subsequent construction work, and needs to be improved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an anti-buoyancy anchor structure, positioning clamp and construction method, which can ensure that the anchor assembly is centered in the anchor hole, thereby achieving accurate positioning of the top position of the anchor assembly for subsequent construction operations.

[0006] In the first aspect, this utility model provides an anti-buoyancy anchor structure, including a vertically arranged waterstop cylinder, the waterstop cylinder being cylindrical and used to be tightly inserted into the anchor hole, an anchor assembly passing through the waterstop cylinder, and limiting members being provided at both ends of the waterstop cylinder, the two limiting members being used to jointly limit the anchor assembly so that the anchor assembly is centered inside the waterstop cylinder;

[0007] Each of the limiting components includes multiple horizontally arranged limiting steel bars. Adjacent limiting steel bars are welded and fixed, and both ends of the multiple limiting steel bars are welded and fixed to the inner wall of the water-stop cylinder, so that the middle position of the multiple limiting steel bars forms a limiting hole that fits tightly with the anchor rod assembly.

[0008] Optionally: the anchor bolt assembly includes multiple vertically arranged support steel bars and multiple vertically arranged support cylinders. The support cylinders are cylindrical, and the multiple support cylinders are coaxial and arranged at equal intervals along the vertical direction. The multiple support steel bars are equally spaced around the support cylinders, and each support steel bar is welded and fixed to the multiple support cylinders respectively.

[0009] The two limiting holes are each in the shape of a regular polygon, and the connecting line of the multiple supporting steel bars is in the shape of a regular polygon and fits tightly with the two limiting holes. The supporting steel bars can abut against the connection position of the two adjacent limiting steel bars of the two limiting members.

[0010] Optionally, multiple pairs of limiting grooves are provided at both ends of the inner wall of the water-stop cylinder. The width of the limiting groove is the same as the outer diameter of the limiting steel bar, and each pair of limiting grooves allows the corresponding end of any limiting steel bar to be tightly engaged to achieve the positioning of the limiting steel bar.

[0011] Optionally, the depth of the limiting groove is set such that multiple limiting steel bars of each limiting member can be stacked vertically and then inserted into the same pair of limiting grooves.

[0012] Optionally, a water-stop ring is fitted onto the upper end of the water-stop cylinder, and the water-stop ring is welded and fixed to the water-stop cylinder.

[0013] Secondly, this utility model provides a positioning fixture for an anti-buoyancy anchor structure, including a support frame. The support frame is provided with a first positioning mechanism and a second positioning mechanism. The first positioning mechanism is used to position the anchor assembly, and the second positioning mechanism is used to position the waterstop cylinder and the anchor assembly, and to center the anchor assembly inside the waterstop cylinder.

[0014] Optionally: the first positioning mechanism includes two support seats that are horizontally slidably connected to the support frame, the two support seats can slide toward each other or toward each other, and the support frame is provided with a drive mechanism for controlling the synchronous movement of the two support seats;

[0015] Each of the two support bases is detachably connected to a support plate on one side close to each other. Each of the two support plates is horizontally rotatably connected to a support shaft on one side close to each other. Each of the two support shafts is coaxially fixedly connected to a positioning column at one end close to each other, and the positioning column can be tightly inserted into the support cylinder.

[0016] The outer diameter of the support shaft is smaller than the outer diameter of the positioning column. Multiple positioning blocks are fixedly connected to the side walls of the two support shafts respectively, and the multiple positioning blocks are arranged at equal intervals along the axial direction of the corresponding support shaft. Each positioning block has a positioning notch on the side away from the support shaft. When the end of the support steel bar is inserted into the positioning notch, the support steel bar abuts against the support cylinder.

[0017] A lifting frame is vertically slidably connected to the support frame. The lifting frame is provided with multiple support slots, and the support slots are for the support cylinder to be tightly inserted. The support frame is provided with a control component for controlling the vertical movement of the lifting frame.

[0018] Optionally: The second positioning mechanism includes two positioning rings respectively fixed on the corresponding support plates, the two support shafts are respectively located inside the corresponding positioning rings, and each positioning ring is provided with a positioning ring groove for the water-stop cylinder to be tightly inserted.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. The anchor bolt assembly is limited by two limiting components, and the anchor bolt assembly is centered in the water-stop cylinder. Since the water-stop cylinder can be tightly inserted into the anchor hole, the anchor bolt assembly can be centered in the anchor hole, so as to achieve accurate positioning of the top position of the anchor bolt assembly, reduce the risk of positional deviation of the top of the anchor bolt assembly, and facilitate subsequent construction operations.

[0021] 2. The positioning fixture is used to position the support cylinder and the supporting steel bars, ensuring the production accuracy of the anchor bolt assembly. At the same time, the positioning fixture can also position the anchor bolt assembly and the waterstop cylinder, making it easier for workers to judge whether the position of the limiting steel bars is accurate, so that workers can adjust the position of the limiting steel bars, thereby ensuring that the anchor bolt assembly is centered inside the waterstop cylinder. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0023] Figure 2 This is a top view of Embodiment 1;

[0024] Figure 3 This is a structural schematic diagram of Example 1, showing the state of the four limiting steel bars;

[0025] Figure 4 This is a structural schematic diagram of Example 1, showing the state of the six limiting steel bars;

[0026] Figure 5 This is a schematic diagram of the overall structure of Example 2;

[0027] Figure 6 This is a schematic diagram of the structure of the first positioning mechanism in Embodiment 2;

[0028] Figure 7 This is a cross-sectional view of Example 2.

[0029] Reference numerals: 1. Waterstop cylinder; 2. Anchor bolt assembly; 21. Supporting steel bar; 22. Support cylinder; 3. Limiting component; 31. Limiting steel bar; 32. Limiting hole; 4. Limiting groove; 5. Waterstop ring; 6. Support frame; 7. First positioning mechanism; 71. Support seat; 72. Support plate; 73. Support shaft; 74. Positioning column; 75. Positioning block; 76. Positioning notch; 77. Lifting frame; 78. Support groove; 8. Second positioning mechanism; 81. Positioning ring; 82. Positioning ring groove; 9. Drive mechanism; 91. Bidirectional lead screw; 92. Servo motor; 10. Control component; 101. Hydraulic cylinder; 11. Fastening screw; 12. Locking ring; 13. Locking groove; 14. Locking block. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings. Example

[0031] like Figures 1-4 This is Embodiment 1 of the present invention. This embodiment discloses an anti-buoyancy anchor structure, including a vertically arranged water-stop cylinder 1. The water-stop cylinder 1 is cylindrical and is used to tightly insert into the anchor hole. That is, the outer diameter of the water-stop cylinder 1 is the same as the inner diameter of the anchor hole, so that the water-stop cylinder 1 can be coaxially located in the anchor hole.

[0032] Reference Figure 1 , Figure 2 An anchor rod assembly 2 is installed inside the water-stop cylinder 1. Limiting elements 3 are provided at both ends of the water-stop cylinder 1. The two limiting elements 3 are used to limit the anchor rod assembly 2 together so that the anchor rod assembly 2 is centered inside the water-stop cylinder 1, thereby enabling the anchor rod assembly 2 to be centered inside the anchor hole.

[0033] Reference Figure 1 , Figure 2 The anchor bolt assembly 2 includes multiple vertically arranged support steel bars 21 and multiple vertically arranged support cylinders 22. The multiple support cylinders 22 are cylindrical and are coaxial and arranged at equal intervals along the vertical direction. The multiple support steel bars 21 are evenly spaced around the support cylinders 22, and each support steel bar 21 is welded and fixed to the multiple support cylinders 22.

[0034] Reference Figure 2 , Figure 3 Each limiting component 3 includes multiple horizontally arranged limiting steel bars 31. Adjacent limiting steel bars 31 are welded and fixed, and the two ends of the multiple limiting steel bars 31 are welded and fixed to the inner wall of the water-stop cylinder 1, so that the middle position of the multiple limiting steel bars 31 forms a limiting hole 32 that fits tightly with the anchor rod assembly 2.

[0035] Reference Figure 2 , Figure 3The two limiting holes 32 are regular polygons, and the line connecting the multiple supporting steel bars 21 is a regular polygon, which fits tightly with the two limiting holes 32. The supporting steel bars 21 can abut against the connection position of the two adjacent limiting steel bars 31 of the two limiting parts 3.

[0036] In this embodiment, refer to Figure 3 There are four supporting steel bars 21. Each limiting member 3 is composed of four limiting steel bars 31, and the four limiting steel bars 31 are in the shape of a "well". That is, the middle part of the four limiting steel bars 31 of each limiting member 3 forms a square limiting hole 32. The four supporting steel bars 21 are respectively abutted at the inner corner of the limiting hole 32 to achieve stable limiting of the anchor bolt assembly 2.

[0037] In other embodiments, refer to Figure 4 The supporting steel bars 21 can also be set with six bars. Then each limiting member 3 is composed of six limiting steel bars 31, and the six limiting steel bars 31 form a regular hexagonal limiting hole 32. The six supporting steel bars 21 respectively abut at the inner corner of the limiting hole 32.

[0038] Reference Figure 1 , Figure 2 Each supporting steel bar 21 is welded and fixed to the two adjacent limiting steel bars 31 of the limiting member 3 located at the upper position. That is, the supporting steel bar 21 abuts against the inner corner of the limiting hole 32 located at the upper position, and the supporting steel bar 21 is welded and fixed to the two abutting limiting steel bars 31 to improve the limiting effect and structural stability of the anchor bolt assembly 2.

[0039] Reference Figure 2 , Figure 3 Multiple pairs of limiting grooves 4 are provided at both ends of the inner wall of the water-stop cylinder 1. The width of the limiting groove 4 is the same as the outer diameter of the limiting steel bar 31. Each pair of limiting grooves 4 allows the corresponding end of any limiting steel bar 31 to be tightly inserted to achieve the positioning of the limiting steel bar 31, which facilitates the welding and fixing of the limiting steel bar 31 and the water-stop cylinder 1 by the staff.

[0040] Reference Figure 2 , Figure 3 The depth of the limiting groove 4 is set such that multiple limiting steel bars 31 of each limiting member 3 can be inserted into the same pair of limiting grooves 4 after being stacked vertically. Since multiple limiting steel bars 31 need to be lapped and welded, the depth of the limiting groove 4 needs to meet this requirement to ensure the stable limiting of multiple limiting steel bars 31.

[0041] Reference Figure 1 , Figure 2 A water-stop ring 5 is fitted on the upper end of the water-stop cylinder 1, and the water-stop ring 5 is welded and fixed to the water-stop cylinder 1. By setting the water-stop ring 5, the waterproof effect between the anti-buoyancy anchor structure and the building is improved.

[0042] In this embodiment, the outer diameter of the water-stop cylinder 1 is 200mm, the wall thickness is 3mm, and the length is 800mm. The outer diameter of the water-stop ring 5 is 500mm and the thickness is 5mm. The outer diameter of the support cylinder 22 is 40mm, the wall thickness is 3mm, and the length is 200mm. The distance between two adjacent support cylinders 22 is 2500mm, and the weld length between the support cylinder 22 and the support steel bar 21 is 50mm.

[0043] In this embodiment, the outer diameter of the supporting steel bar 21 is 20mm, the outer diameter of the limiting steel bar 31 is 8mm, and each supporting steel bar 21 is composed of multiple threaded steel bars. Adjacent threaded steel bars are connected by straight threads, and the joint grade is Class I, in order to ensure the structural strength of the supporting steel bar 21. Example

[0044] like Figures 5-7 This is Embodiment 2 of the present invention. This embodiment discloses a positioning fixture for an anti-buoyancy anchor structure, including a support frame 6. The support frame 6 is provided with a first positioning mechanism 7 and a second positioning mechanism 8. The first positioning mechanism 7 is used to position the supporting steel bar 21 and the supporting cylinder 22 of the anchor assembly 2. The second positioning mechanism 8 is used to position the water-stop cylinder 1 and the anchor assembly 2, and to center the anchor assembly 2 inside the water-stop cylinder 1.

[0045] Reference Figure 5 , Figure 6 , Figure 7 The first positioning mechanism 7 includes two support seats 71 that are horizontally slidably connected to the support frame 6. The two support seats 71 can slide toward each other or toward each other, and the support frame 6 is provided with a drive mechanism 9 for controlling the synchronous movement of the two support seats 71.

[0046] Reference Figure 5 , Figure 6 , Figure 7 Each of the two support bases 71 is detachably connected to a support plate 72 on one side close to each other. Each of the two support plates 72 is horizontally rotatably connected to a support shaft 73 on one side close to each other. Each of the two support shafts 73 is coaxially fixedly connected to a positioning post 74 at one end close to each other, and the positioning post 74 can be tightly inserted into the support cylinder 22.

[0047] Reference Figure 5 , Figure 6 , Figure 7The outer diameter of the support shaft 73 is smaller than the outer diameter of the positioning column 74. Multiple positioning blocks 75 are fixedly connected to the side walls of the two support shafts 73, and these positioning blocks 75 are arranged at equal intervals along the axial direction of the corresponding support shaft 73. Simultaneously, each positioning block 75 has a positioning notch 76 on the side away from the support shaft 73. When the end of the support reinforcing bar 21 is inserted into the positioning notch 76, the support reinforcing bar 21 abuts against the support cylinder 22, thereby achieving positioning of the support reinforcing bar 21 and the support cylinder 22.

[0048] Reference Figure 5 , Figure 6 , Figure 7 A lifting frame 77 is vertically slidably connected to the support frame 6. The lifting frame 77 is provided with multiple support grooves 78, and the support grooves 78 are used for the support cylinders 22 to be tightly inserted. The support frame 6 is provided with a control component 10 for controlling the vertical movement of the lifting frame 77, so as to realize the positioning of multiple support cylinders 22 located in the middle position.

[0049] When the anchor bolt assembly 2 needs to be manufactured, the two support cylinders 22 are tightly fitted onto the corresponding positioning posts 74. Then, the drive mechanism 9 controls the two support seats 71 to move in a direction away from each other, and the distance between the two support shafts 73 meets the length requirements of the support steel bar 21. Next, the multiple support cylinders 22 are respectively inserted into the corresponding support grooves 78, and the lifting frame 77 is raised by the control component 10, making the multiple support cylinders 22 coaxial.

[0050] Subsequently, continue rotating the two support shafts 73 until the two positioning notches 76 face upwards. Then, insert both ends of the support steel bar 21 into the corresponding positioning notches 76. At this point, the support steel bar 21 abuts against the multiple support cylinders 22, and then the support steel bar 21 and the multiple support cylinders 22 can be welded and fixed. Then, continue rotating the two support shafts 73 until the two positioning notches 76 face upwards, insert another support steel bar 21 into the two positioning notches 76, and then weld the support steel bar 21 and the support cylinder 22 to fix them.

[0051] Repeat the above actions until multiple supporting steel bars 21 are welded and fixed to multiple supporting cylinders 22 respectively. It should be noted that if the supporting steel bars 21 interfere with the lifting frame 77 during the rotation of the supporting shaft 73, the lifting frame 77 can be controlled to move downward by the control component 10, and the supporting cylinders 22 can be separated from the lifting frame 77 to ensure that the supporting steel bars 21 and other components can rotate smoothly.

[0052] Reference Figure 5 , Figure 6 , Figure 7The drive mechanism 9 includes a bidirectional lead screw 91 that is horizontally rotatably connected to the support frame 6. The two ends of the bidirectional lead screw 91 pass through the corresponding support seats 71 and are threadedly connected to the support seats 71. Meanwhile, a servo motor 92 is fixedly connected to the support frame 6. The output shaft of the servo motor 92 is coaxially fixedly connected to the bidirectional lead screw 91, thereby providing a stable driving force for the bidirectional lead screw 91.

[0053] Reference Figure 5 , Figure 6 , Figure 7 The control unit 10 includes a pair of hydraulic cylinders 101. The tails of the pair of hydraulic cylinders 101 are fixedly connected to the support frame 6, and the piston ends of the pair of hydraulic cylinders 101 are fixedly connected to the lifting frame 77, so that the pair of hydraulic cylinders 101 can jointly drive the lifting frame 77 to move vertically.

[0054] Reference Figure 5 , Figure 6 , Figure 7 The support plate 72 and the support base 71 are connected by multiple fastening screws 11 so that the support plate 72 can be disassembled. When the workers need to make anchor rod assemblies 2 with different numbers of supporting steel bars 21, the support plate 72 can be replaced to improve the adaptability of the positioning fixture.

[0055] Reference Figure 5 , Figure 6 , Figure 7 Each of the two support plates 72 is fixedly connected to a locking ring 12, and the two support shafts 73 are coaxially located inside the corresponding locking ring 12. The inner sidewall of the locking ring 12 is provided with a plurality of locking grooves 13, and the plurality of locking grooves 13 are respectively set with a plurality of positioning blocks 75. The sidewall of the support shaft 73 is fixedly connected with a plurality of elastic locking blocks 14, and the plurality of locking blocks 14 are respectively set with a plurality of positioning blocks 75, and the locking blocks 14 can be inserted into the locking grooves 13.

[0056] When the operator controls the rotation of the support shaft 73, if one of the limiting notches faces upward, multiple locking blocks 14 can be respectively engaged in the corresponding locking grooves 13, thereby limiting the support shaft 73. At the same time, it can also prompt the operator to facilitate the welding operation and improve the ease of operation.

[0057] Reference Figure 5 , Figure 6 , Figure 7 The second positioning mechanism 8 includes two positioning rings 81 that are respectively fixed on the corresponding support plates 72, two support shafts 73 that are respectively located inside the corresponding positioning rings 81, and each positioning ring 81 is provided with a positioning ring groove 82 for the water-stop cylinder 1 to be tightly inserted.

[0058] After the anchor bolt assembly 2 is manufactured, the two support seats 71 are controlled to move away from each other, and the anchor bolt assembly 2 is removed. Then, one end of the support cylinder 22 is inserted into one of the positioning ring grooves 82. The anchor bolt assembly 2 is then placed between the two support seats 71, and the two support seats 71 are controlled to move closer to each other through the drive mechanism 9 so that the two positioning pins 74 are inserted into the support cylinder 22 respectively.

[0059] Next, multiple limiting steel bars 31 are inserted into the limiting groove 4 at the other end of the support cylinder 22, and it is determined whether the limiting steel bars 31 and the anchor rod assembly 2 are tightly fitted to ensure that the anchor rod assembly 2 is centered in the water-stop cylinder 1. Then the limiting steel bars 31 are welded.

[0060] Subsequently, the support cylinder 22 is pulled to move laterally, and the other end of the support cylinder 22 is inserted into the corresponding positioning ring groove 82. Then, multiple limiting steel bars 31 are inserted into the limiting groove 4 at the other end of the support cylinder 22, and it is determined whether the limiting steel bars 31 and the anchor rod assembly 2 are tightly fitted. Then, the limiting steel bars 31 are welded.

[0061] The positioning fixture in this embodiment can position the support cylinder 22 and the support steel bar 21 of the anchor bolt assembly 2, ensuring the production accuracy of the anchor bolt assembly 2. At the same time, the positioning fixture can also position the anchor bolt assembly 2 and the water-stop cylinder 1, making it convenient for workers to judge whether the position of the limiting steel bar 31 is accurate, so that workers can adjust the position of the limiting steel bar 31, thereby ensuring that the anchor bolt assembly 2 is centered in the water-stop cylinder 1.

[0062] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. An anti-float anchor structure, characterized by: The utility model provides an anchor rod assembly and water stop cylinder structure, including the vertical setting water stop cylinder (1), the water stop cylinder (1) is cylindrical and is used for closely inserting into the anchor hole, the anchor rod assembly (2) is arranged in the water stop cylinder (1), and the both ends of the water stop cylinder (1) are provided with the limiting piece (3) respectively, and the two limiting pieces (3) are used for limiting the anchor rod assembly (2) together to make the anchor rod assembly (2) be centrally located in the water stop cylinder (1). Each limiting piece (3) includes a plurality of horizontally arranged limiting steel bars (31), and two adjacent limiting steel bars (31) are welded and fixed.

2. Anti-floating anchor rod structure according to claim 1, characterized in that: The anchor rod assembly (2) includes a plurality of vertically arranged support steel bars (21) and a plurality of vertically arranged support cylinders (22), the support cylinder (22) is cylindrical, the plurality of support cylinders (22) are coaxial and arranged at equal intervals in the vertical direction, the plurality of support steel bars (21) are arranged at equal intervals around the support cylinder (22), and each support steel bar (21) is welded and fixed with the plurality of support cylinders (22). The two limiting holes (32) are regular polygons, the connecting line of the plurality of support steel bars (21) is a regular polygon, and the connecting line is closely matched with the two limiting holes (32), and the support steel bar (21) can abut against the connecting position of the two adjacent limiting steel bars (31) of the two limiting pieces (3).

3. Anti-floating anchor rod structure according to claim 2, characterized in that: The both ends of the inner wall of the water stop cylinder (1) are provided with a plurality of limiting grooves (4), the groove width of the limiting groove (4) is the same as the outer diameter of the limiting steel bar (31), and each pair of limiting grooves (4) is used for closely clamping the corresponding end of any limiting steel bar (31) to realize the positioning of the limiting steel bar (31).

4. Anti-floating anchor rod structure according to claim 3, characterized in that: The groove depth of the limiting groove (4) is set to be capable of clamping the plurality of limiting steel bars (31) of each limiting piece (3) in the same pair of limiting grooves (4) after being stacked in the vertical direction.

5. The anti-float anchor structure according to claim 1, wherein: The upper end of the water stop cylinder (1) is sleeved with a water stop ring (5), and the water stop ring (5) is welded and fixed with the water stop cylinder (1).

6. A positioning jig for an anti-float anchor structure according to any one of claims 1-5, characterized in that: The utility model also provides a support frame (6) provided with a first positioning mechanism (7) and a second positioning mechanism (8), the first positioning mechanism (7) is used for positioning the anchor rod assembly (2), the second positioning mechanism (8) is used for positioning the water stop cylinder (1) and the anchor rod assembly (2), and the anchor rod assembly (2) is centrally located in the water stop cylinder (1).

7. The positioning fixture of claim 6, wherein: The first positioning mechanism (7) includes two support seats (71) horizontally and slidably connected to the support frame (6), the two support seats (71) can slide towards each other or away from each other, and the support frame (6) is provided with a driving mechanism (9) for controlling the synchronous movement of the two support seats (71). Two sides of the two support seats (71) close to each other are respectively detachably connected with support discs (72), two sides of the two support discs (72) close to each other are respectively horizontally rotationally connected with support shafts (73), one end of the two support shafts (73) close to each other is respectively coaxially fixedly connected with a positioning column (74), and the positioning column (74) can be closely inserted into the support cylinder (22); The outer diameter of the support shaft (73) is smaller than the outer diameter of the positioning column (74), the side wall of the two support shafts (73) is respectively fixedly connected with a plurality of positioning blocks (75), and a plurality of the positioning blocks (75) are equidistantly arranged along the axial direction of the corresponding support shaft (73), one side of each positioning block (75) away from the support shaft (73) is respectively provided with a positioning notch (76), when the end of the support steel bar (21) is clamped into the positioning notch (76), the support steel bar (21) abuts against the support cylinder (22); The support frame (6) is vertically slidably connected with a lifting frame (77), the lifting frame (77) is provided with a plurality of support grooves (78), and the support grooves (78) are used for closely clamping the support cylinder (22), and the support frame (6) is provided with a control member (10) for controlling the vertical movement of the lifting frame (77).

8. The positioning fixture of claim 7, wherein: The second positioning mechanism (8) comprises two positioning rings (81) fixed on the corresponding support discs (72), respectively, and the two support shafts (73) are located on the inner side of the corresponding positioning rings (81), respectively, and each positioning ring (81) is provided with a positioning ring groove (82) for closely clamping the water stop cylinder (1).

Images