Telescopic connecting tool for spiral anchor composite pile

Abstract

The telescopic connecting tool comprises an outer sleeve and an inner connecting rod arranged in the outer sleeve in a penetrating mode, the outer sleeve and the inner connecting rod are connected through a plurality of pins, the pins are distributed in the length direction of the outer sleeve, and the distances between the adjacent pins are the same. The outer sleeve and the inner connecting rod are provided with pin holes for the pins to penetrate through, the lower end of the outer sleeve is fixedly connected with a lower reinforcing plate, the bottom of the lower reinforcing plate is fixedly connected with an external thread lead screw, the upper end of the inner connecting rod is fixedly connected with a connecting plate, and a plurality of bolt holes are formed in the connecting plate. The outer sleeve is conveniently in threaded connection with the spiral anchor through the external thread screw rod at the bottom, the inner connecting rod is conveniently in bolt connection with the screw-in end of the screw-in drilling machine through the connecting plate at the top, and use is convenient. The outer sleeve and the inner connecting rod are movably connected through a plurality of pins, and the penetrating length of the inner connecting rod in the outer sleeve can be adjusted by pulling out the plug pins, so that the connecting tool is lengthened or shortened, the adjustment is convenient, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw anchor composite piles, in particular to a telescopic connecting tooling for screw anchor composite piles. Background Technique

[0002] With the rapid development of power lines, new energy power lines and the communication industry in recent years, the number of transmission line towers, single-pole towers and signal tower base stations has increased. Their foundations are mostly cast-in-place foundations, such as excavated stepped foundations, cast-in-place pile foundations, etc. The construction methods require on-site excavation, suspension holes, formwork support, etc. The construction time is long, the floor area is large, and it causes pollution to the site. To solve this problem, the prior art has improved a process of screw anchor composite piles. This process uses a rotary drilling rig to first screw a screw anchor into the pile foundation hole, and then pour concrete into the pile foundation hole to form an integral structure with the screw anchor and the concrete pile, which can not only reduce the drilling depth but also improve the uplift resistance of the pile body. The construction is convenient and greatly shortens the construction period.

[0003] When the prior art rotary drilling rig screws the screw anchor, the screw-in end of the rotary drilling rig is threadedly connected to the upper end of the screw anchor through a connecting rod, so as to drive the rotation of the screw anchor into the deep soil layer. Since the calculated screwing-in depth of the screw anchor in different regions is different, it is necessary to disassemble and replace connecting rods of different lengths to connect the screw anchor during construction to reach the calculated depth. Therefore, it is necessary to prepare a variety of connecting rods of different lengths for standby on site, and the disassembly and assembly process of the connecting rod is cumbersome and very inconvenient. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a telescopic connecting rod, which can adjust the length of the connecting rod, reduce the number of disassembly and assembly between the connecting rod and the rotary drilling rig, is convenient to use, and improves the construction efficiency.

[0005] The utility model is realized by the following technical solutions. A telescopic connecting tooling for screw anchor composite piles includes an outer sleeve and an inner connecting rod inserted into the outer sleeve. The outer sleeve and the inner connecting rod are connected by a plurality of pins. The plurality of pins are distributed along the length direction of the outer sleeve, and the distance between adjacent pins is the same. The outer sleeve and the inner connecting rod are provided with pin holes for the pins to pass through. The lower end of the outer sleeve is fixedly connected with a lower reinforcing plate, and the bottom of the lower reinforcing plate is fixedly connected with an external thread screw rod. The upper end of the inner connecting rod is fixedly connected with a connecting plate, and a plurality of bolt holes are provided on the connecting plate.

[0006] The lower reinforcing plate at the lower end of the outer sleeve of this solution can improve the structural strength of the lower port of the outer sleeve. The outer sleeve is conveniently threadedly connected to the screw anchor through the external thread screw rod at the bottom. The inner connecting rod is conveniently bolt - connected to the advancing end of the advancing drill through the connecting plate at the top, which is convenient to use. The inner connecting rod is inserted into the outer sleeve, and the outer sleeve and the inner connecting rod are movably connected by a plurality of pin joints. By inserting and removing the pins, the insertion length of the inner connecting rod in the outer sleeve can be adjusted, so that the connecting tooling can be lengthened or shortened, the adjustment is convenient, and the construction efficiency is improved.

[0007] As an optimization, the outer sleeve and the inner connecting rod are connected by at least two pins. This optimized solution with at least two pins can make the inner connecting rod have an adjustable amount while ensuring the connection strength between the inner connecting rod and the outer sleeve.

[0008] As an optimization, the plurality of bolt holes include four long holes and four round holes distributed circumferentially. This optimized solution has two bolt - hole shapes, which is convenient for connecting the advancing ends of different models of advancing drills and has stronger applicability.

[0009] As an optimization, a plurality of first reinforcing rib plates are fixedly connected between the outer wall of the outer sleeve and the top of the lower reinforcing plate. This optimized solution improves the structural strength between the outer sleeve and the lower reinforcing plate.

[0010] As an optimization, a through - pin hole is opened transversely through the external thread screw rod. This optimization facilitates the secondary connection of the external thread screw rod and the connecting piece.

[0011] As an optimization, a plurality of second reinforcing rib plates are fixedly connected between the outer wall of the inner connecting rod and the bottom of the connecting plate. This optimized solution improves the structural strength between the inner connecting rod and the connecting plate.

[0012] As an optimization, an upper reinforcing plate is fixedly connected to the upper end of the outer sleeve, and the upper reinforcing plate is provided with a through - hole for the inner connecting rod to pass through. This optimized solution improves the structural strength of the upper port of the outer sleeve.

[0013] As an optimization, a plurality of third reinforcing rib plates are fixedly connected between the outer wall of the outer sleeve and the bottom of the upper reinforcing plate. This optimized solution improves the structural strength between the outer sleeve and the upper reinforcing plate.

[0014] The beneficial effects of the present utility model are as follows: The outer sleeve is conveniently threadedly connected to the screw anchor through the external thread screw rod at the bottom. The inner connecting rod is conveniently bolt - connected to the advancing end of the advancing drill through the connecting plate at the top, which is convenient to use. The inner connecting rod is inserted into the outer sleeve, and the outer sleeve and the inner connecting rod are movably connected by a plurality of pin joints. By inserting and removing the pins, the insertion length of the inner connecting rod in the outer sleeve can be adjusted, so that the connecting tooling can be lengthened or shortened, the adjustment is convenient, and the construction efficiency is improved. Description of the Drawings

[0015] Figure 1 It is a cross - sectional view of the present utility model;

[0016] Figure 2 This is the front view of the present utility model;

[0017] Figure 3 This is the top view of the present utility model;

[0018] Figure 4 This is the schematic diagram of the inner connecting rod structure;

[0019] Figure 5 This is the schematic diagram of the extended state of the present utility model;

[0020] As shown in the figure:

[0021] 1. Outer sleeve, 2. Inner connecting rod, 3. Lower reinforcement plate, 4. External thread screw rod, 5. Upper reinforcement plate, 6. Connecting plate, 7. Pin, 8. Pin hole, 9. First reinforcement rib plate, 10. Through-pin hole, 11. Second reinforcement rib plate, 12. Third reinforcement rib plate, 131. Round hole, 132. Long slot hole. Specific implementation manner

[0022] To clearly illustrate the technical features of this solution, the following elaborates on this solution through specific implementation manners.

[0023] As Figures 1 to 5 shown, a telescopic connection tooling for a screw anchor composite pile includes an outer sleeve 1 and an inner connecting rod 2 inserted into the outer sleeve 1. In this embodiment, the outer sleeve 1 is a steel pipe. To reduce the structural weight, the inner connecting rod 2 also uses a steel pipe, and the inner connecting rod is inserted into the cavity of the outer sleeve.

[0024] The outer sleeve 1 and the inner connecting rod 2 are detachably connected by a plurality of pins 7. The plurality of pins 7 are distributed along the length direction of the outer sleeve 1, and the distance between adjacent pins 7 is the same. Pin holes 8 for the pins 7 to pass through are provided on both the outer sleeve 1 and the inner connecting rod 2. The pins are convenient for disassembly. By pulling out and inserting the pins, the inserted length of the inner connecting rod 2 in the outer sleeve 1 can be adjusted. Since the distance between adjacent pins 7 is the same, as the inserted length of the inner connecting rod 2 changes, the pins can penetrate into different pin holes. The outer sleeve 1 and the inner connecting rod 2 are connected by at least two pins 7. As Figure 1 shown, in this embodiment, four pins 7 are distributed along the length direction of the outer sleeve 1, and four pin holes 8 are provided on both the outer sleeve 1 and the inner connecting rod 2.

[0025] The lower end of the outer sleeve 1 is fixedly connected with a lower reinforcement plate 3, and a plurality of first reinforcement rib plates 9 are fixedly connected between the outer wall of the outer sleeve 1 and the top of the lower reinforcement plate 3. The plurality of first reinforcement rib plates 9 are evenly distributed circumferentially.

[0026] A threaded external screw rod 4 is fixedly connected to the bottom of the lower reinforcement plate 3. The threaded external screw rod 4 is coaxially arranged with the outer sleeve 1. The threaded external screw rod 4 is adapted to the internal threaded opening at the upper end of the screw anchor. The outer sleeve 1 is threadedly connected to the screw anchor through the threaded external screw rod 4. And a pin hole 10 is formed in the threaded external screw rod, which horizontally penetrates through the threaded external screw rod.

[0027] An upper reinforcement plate 5 is fixedly connected to the upper end of the outer sleeve 1. The upper reinforcement plate 5 is provided with a through hole for the inner connecting rod 2 to pass through. The aperture of the through hole is adapted to the outer diameter of the inner connecting rod to prevent the inner connecting rod from shaking. A plurality of third reinforcing rib plates 12 are fixedly connected between the outer wall of the outer sleeve 1 and the bottom of the upper reinforcement plate 5. The plurality of third reinforcing rib plates 12 are evenly distributed in the circumferential direction.

[0028] A connecting plate 6 is fixedly connected to the upper end of the inner connecting rod 2. A plurality of bolt holes 13 are formed in the connecting plate 6. The plurality of bolt holes 13 include four long holes 132 and four round holes 131 distributed in the circumferential direction. In this embodiment, the connecting plate 6 is a rectangular plate. The four long holes are evenly distributed in the circumferential direction around the center of the rectangular plate, and the four round holes are distributed at the four corners of the rectangular plate, which is convenient for bolt connection with the screw-in end of different models of screw-in drills.

[0029] It should be noted that in the prior art, due to the slightly different bolt hole positions at the screw-in ends of screw-in drills of different manufacturers and different models, the plurality of bolt holes in this solution are not limited to four long holes or four round holes. Those skilled in the art can understand that the structure of the plurality of bolt holes only needs to correspond to the bolt hole positions at the screw-in end of the screw-in drill, so as to facilitate the bolt connection between the connecting plate and the screw-in end of the screw-in drill.

[0030] A plurality of second reinforcing rib plates 11 are fixedly connected between the outer wall of the inner connecting rod 2 and the bottom of the connecting plate 6. The plurality of second reinforcing rib plates 11 are evenly distributed in the circumferential direction. In this embodiment, the first reinforcing rib plate 9, the second reinforcing rib plate 10, the second reinforcing rib plate 11, and the third reinforcing rib plate 12 are all four in number.

[0031] Working principle: Determine the required length of the connecting tooling according to the calculated screw-in depth of the screw anchor. Pull out all the pins 7 on the connecting tooling to make the inner connecting rod 2 move freely. Adjust the penetration length of the inner connecting rod 2 in the outer sleeve 1, so as to adjust the overall length of the connecting tooling, and the adjusted overall length cannot be less than the required length, so that the screw anchor can be screwed into the calculated depth. After the overall length adjustment is determined, insert the pin 7 through the pin holes 8 of the outer sleeve 1 and the inner connecting rod 2 to connect and fix the outer sleeve 1 and the inner connecting rod 2. The inner connecting rod 2 is bolted to the screw-in end of the screw-in drill through the connecting plate 6 at the upper end, and the outer sleeve 1 is threadedly connected to the internal threaded port at the upper end of the screw anchor through the threaded external screw rod 4 at the lower end, so that the screw-in drill drives the screw anchor to screw into the deep soil layer underground through the connecting tooling, which is convenient to use.

[0032] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and accompanying drawings are only used to illustrate the technical solutions of the present utility model and are not intended to limit the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the technical field within the substantial scope of the present utility model do not depart from the purpose of the present utility model and should also fall within the protection scope of the claims of the present utility model.

Claims

1. A retractable connection tool for spiral anchor composite piles, characterized by: The outer sleeve (1) and the inner connecting rod (2) are connected by a plurality of pins (7), the plurality of pins are distributed along the length direction of the outer sleeve (1), the spacing between adjacent pins (7) is the same, and the outer sleeve (1) and the inner connecting rod (2) are provided with pin holes (8) for the pins (7) to pass through. The lower end of the outer sleeve (1) is fixedly connected to a lower reinforcing plate (3), the bottom of the lower reinforcing plate is fixedly connected to an externally threaded screw (4), and the upper end of the inner connecting rod (2) is fixedly connected to a connecting plate (6), which is provided with a plurality of bolt holes (13).

2. The retractable connection tool for spiral anchor composite piles according to claim 1, characterized in that: The outer sleeve (1) and the inner connecting rod (2) are connected via at least two pins (7).

3. The retractable connection tool for spiral anchor composite piles according to claim 1, characterized in that: The multiple bolt holes (13) include four elongated holes (132) and four circular holes (131) distributed along the circumferential direction.

4. The retractable connection tool for spiral anchor composite piles according to claim 1, characterized in that: A plurality of first reinforcing rib plates (9) are fixedly connected between the outer wall of the outer sleeve (1) and the top of the lower reinforcing plate (3).

5. The retractable connection tool for spiral anchor composite piles according to claim 1, characterized in that: The externally threaded screw rod (4) is provided with a nail-through hole (10) which passes through the externally threaded screw rod transversely.

6. The retractable connection tool for spiral anchor composite piles according to claim 1, characterized in that: A plurality of second reinforcing rib plates (11) are fixedly connected between the outer wall of the inner connecting rod (2) and the bottom of the connecting plate (6).

7. The retractable connection tool for spiral anchor composite piles according to claim 1, characterized in that: An upper reinforcing plate (5) is fixedly connected to the upper end of the outer sleeve (1), and the upper reinforcing plate is provided with a through hole for the inner connecting rod (2) to pass through.

8. The retractable connection tool for spiral anchor composite piles according to claim 7, characterized in that: A plurality of third reinforcing rib plates (12) are fixedly connected between the outer wall of the outer sleeve (1) and the bottom of the upper reinforcing plate (5).

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