A pipe pile pull-out test fastening device

Abstract

The present invention relates to a pipe pile pull-out test fastening device, which belongs to the field of pipe pile detection technology. The technical scheme thereof includes: symmetrically arranged fixing frames; arc-shaped fixed plates installed between the fixing frames and matching the outer wall of the pipe pile; arc-shaped movable plates slidingly connected between the fixing frames on both sides and matching the arc-shaped fixed plates; and a driving component installed on the fixing frames for driving the arc-shaped movable plates to slide in a predetermined direction to cooperate with the arc-shaped fixed plates to clamp the outer wall of the pipe pile. When in use, the fastening device of the present invention can conveniently fix the pipe pile, effectively reduce the workload of the staff, reduce unnecessary costs, and improve work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of pipe pile detection, and in particular to a pipe pile anti-pulling test fastening device. Background Art

[0002] During the construction process, it is usually necessary to conduct pull-out tests on concrete pipe piles buried in the construction site to detect the firmness and strength of the pipe piles.

[0003] At present, when testing the pull-out performance of traditional pipe piles, it is generally necessary to first implant pull-out steel bars and pour fillers such as concrete into the pipe piles, and the pull-out steel bars need to be exposed to a predetermined length of the pipe pile, so as to increase the friction between the filler and the inner wall of the pipe pile. Then, the connecting steel bars of the pull-out test tool are connected to the exposed ends of the pull-out steel bars, and then the connecting steel bars are lifted up with tools such as jacks to drive the pull-out steel bars in the pipe pile to move upward to test the pull-out performance of the pipe pile.

[0004] However, the current process of testing the pull-out resistance of pipe piles is relatively complicated, especially it requires a lot of manpower and material resources to fix the pipe piles. If the project volume is large, it will inevitably affect the work efficiency. Therefore, there is an urgent need for a device with good performance and convenient pull-out test for pipe piles. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pipe pile pull-out test fastening device, which can conveniently implement the pull-out test of the pipe pile, effectively reduce the workload of the staff, reduce unnecessary costs, and improve work efficiency.

[0006] The above object of the present invention is achieved through the following technical solutions:

[0007] A pipe pile pull-out test fastening device comprises: symmetrically arranged fixing frames; arc-shaped fixed plates installed between the fixing frames and matching the outer wall of the pipe pile; arc-shaped movable plates slidably connected between the fixing frames on both sides and matching the arc-shaped fixed plates; and a driving component installed on the fixing frames for driving the arc-shaped movable plates to slide in a predetermined direction so as to cooperate with the arc-shaped fixed plates to clamp the outer wall of the pipe pile.

[0008] By adopting the above technical scheme, when it is necessary to carry out a pull-out test on the pipe pile, the fixing frame can be placed on both sides of the pipe pile so that the arc-shaped fixed plate fits against the outer wall of the pipe pile, and the driving component is turned on to drive the arc-shaped movable plate to move in a predetermined direction. The arc-shaped fixed plate and the arc-shaped movable plate can conveniently clamp the pipe pile, and then the pull-out test tool can be used to carry out a pull-out test on the pipe pile. Through the above scheme, the workload of the staff can be effectively reduced, the cost can be reduced, and the work efficiency can be improved.

[0009] The present invention is further configured as follows: the arc-shaped fixed plate is vertically installed with strips, symmetrical cross plates are horizontally fixed on the top of the strips, and symmetrical fixing tubes for connecting steel bars to pass through are fixed between the cross plates.

[0010] By adopting the above technical solution, the fixed cylinder provided can limit the connecting steel bars, which can not only facilitate the pull-out test of the pipe piles, but also reduce the shaking of the connecting steel bars during the pull-out test, so that the pipe piles are evenly stressed, which is conducive to improving the accuracy of the test data.

[0011] The present invention is further configured as follows: a limit plate is vertically installed on the arc-shaped movable plate, and a limit opening is opened on the limit plate for the horizontal plate to pass through horizontally.

[0012] By adopting the above technical solution, the limit plate and the limit opening are set, and the cooperation between the two can not only enhance the stability of the horizontal plate, but also guide the arc moving plate to reduce the shaking of the arc moving plate during movement, and limit the up and down shaking of the horizontal plate.

[0013] The present invention is further configured that: the transverse plate is provided with symmetrical lifting rods for lifting the transverse plate.

[0014] By adopting the above technical solution, the lifting rod is arranged, which can not only facilitate the fixation of the pull-out test equipment and the cross plate, but also facilitate the lifting and movement of the entire device. This structure is simple to operate and easy to implement.

[0015] The present invention further provides: the fixing frame includes: a bottom plate; vertical plates arranged vertically on both sides of the bottom plate; and a connecting plate installed on the top of the vertical plates and parallel to the bottom plate, and the arc-shaped movable plate is slidably connected between the bottom plate and the connecting plate.

[0016] By adopting the above technical solution, the bottom plate, the vertical plate and the connecting plate cooperate with each other so that the fixing frame forms a stable frame, which facilitates the placement of the entire device and improves the stability.

[0017] The present invention further provides: the driving assembly includes: a mounting seat installed on the base plate; and a cylinder installed on the mounting seat.

[0018] By adopting the above technical solution, when the pipe pile needs to be clamped, the cylinder only needs to be turned on to drive the arc-shaped moving plate to cooperate with the arc-shaped fixed plate to fix the pipe pile. This structural design is ingenious and has great market prospects.

[0019] The present invention further provides: the bearing surface of the mounting seat is provided with an inwardly recessed surface to match the outer wall of the cylinder, and an arc-shaped limiting rod for limiting the cylinder is provided between the base plate and the connecting plate.

[0020] By adopting the above technical solution, the recessed surface can increase the contact area with the cylinder, making the cylinder more securely installed, and the arc-shaped limit rod can further limit the cylinder and reduce the left and right shaking of the cylinder.

[0021] The present invention further provides that: the inner sides of the arc-shaped fixed plate and the arc-shaped movable plate are both detachably provided with an arc-shaped pasting plate, and the inner side of the arc-shaped pasting plate is provided with a plurality of convex strips parallel to each other.

[0022] By adopting the above technical solution, when the diameter of the pipe pile is small, the arc-shaped plate can be adapted to the pipe pile with a relatively small diameter, thereby further increasing the scope of application of the device and saving unnecessary costs. The convex strips can increase the friction between the outer wall of the pipe pile and reduce the situation in which sliding occurs during the clamping of the pipe pile and affects the test data.

[0023] The present invention further provides that: a plurality of mutually parallel reinforcement strips are arranged around the outer sides of the arc-shaped fixed plate and the arc-shaped movable plate.

[0024] By adopting the above technical solution, the reinforcement strips provided can reinforce the device as a whole, thereby reducing the deformation of the arc-shaped fixed plate and the arc-shaped movable plate during the process of clamping the pipe pile.

[0025] The present invention further provides that: the sides where the arc-shaped fixed plate and the arc-shaped movable plate are in contact with each other are provided with positioning members for positioning the two.

[0026] By adopting the above technical solution, the positioning piece can not only position and guide the arc-shaped movable plate, so that it can quickly cooperate with the arc-shaped fixed plate, but also increase the firmness between the arc-shaped movable plate and the arc-shaped fixed plate, further improving the firmness of the pipe pile clamping.

[0027] In summary, the present invention has the following beneficial effects:

[0028] By setting the arc-shaped fixed plate and the arc-shaped movable plate, under the drive of the driving assembly, the arc-shaped movable plate and the arc-shaped fixed plate can cooperate with each other to clamp the pipe pile, thereby facilitating the pull-out resistance test of the pipe pile and reducing unnecessary labor costs. The arc-shaped pasting plate can further increase the application range of the device;

[0029] By setting the limit plate, the limit opening and the fixing tube, they cooperate with each other and can further strengthen the device when testing pipe piles, so that the pipe piles are evenly stressed, thereby making the data of the pipe pile test more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0031] Figure 2 It is an overall top view of an embodiment of the present invention.

[0032] Figure numerals: 1. fixing frame; 11. bottom plate; 12. vertical plate; 13. connecting plate; 2. arc-shaped fixed plate; 21. strip plate; 22. horizontal plate; 23. fixing cylinder; 3. arc-shaped movable plate; 31. limiting plate; 32. limiting opening; 33. lifting rod; 4. mounting seat; 41. cylinder; 42. arc-shaped limiting rod; 5. arc-shaped sticking plate; 51. convex strip; 52. reinforcement strip. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0034] This embodiment: a pipe pile pull-out test fastening device, such as Figure 1 and Figure 2 As shown, it includes a symmetrically arranged fixing frame 1, which is mainly composed of a bottom plate 11, a vertical plate 12 and a connecting plate 13. The vertical plates 12 are arranged on both sides of the bottom plate 11, and the connecting plate 13 is connected to the top of the vertical plate 12 and is parallel to the bottom plate 11. An arc-shaped fixed plate 2 is welded between the bottom plate 11 and the connecting plate 13. The arc-shaped fixed plate 2 can be fitted with the outer wall of the pipe pile and is semicircular as a whole. An arc-shaped movable plate 3 is also slidably connected between the bottom plate 11 and the connecting plate 13.

[0035] The arc-shaped movable plate 3 can slide along the extension direction of the bottom plate 11. In addition, a driving component is installed on one side of the bottom plate 11, and the driving component can drive the arc-shaped movable plate 3 to slide, so that the arc-shaped movable plate 3 moves toward the direction of the arc-shaped fixed plate 2; when it is necessary to perform pull-out resistance test on the pipe pile, the arc-shaped movable plate 3 and the arc-shaped fixed plate 2 can be mounted on the pipe pile exposed to the ground, and the driving component is turned on. The driving component can drive the arc-shaped movable plate 3 to move, so that the arc-shaped movable plate 3 can cooperate with the arc-shaped fixed plate 2 to firmly clamp the pipe pile.

[0036] Symmetrical strips 21 are installed along the vertical direction on the outside of the arc-shaped fixed plate 2, and symmetrical cross plates 22 are horizontally welded on the top of the strips 21, and fixed tubes 23 are welded between the cross plates 22. In the present embodiment, the number of fixed tubes 23 is two, and in other embodiments, it can be determined according to actual conditions. When the arc-shaped fixed plate 2 and the arc-shaped movable plate 3 clamp the pipe pile, a support platform can be set up on the construction site, and the jack can be placed on the support platform. The connecting steel bars of the anti-pullout tool are then vertically passed through the fixed tube 23, and are directly connected to the fixed tube 23 by bolts or threads, so that the connecting steel bars are fixed to the fixed tube 23. When the jack is turned on, an upward force of the fastening device can be applied, thereby detecting the anti-pullout performance of the pipe pile. Through this scheme, the process of pouring concrete into the pipe pile can be omitted, which simplifies the process, reduces unnecessary costs, and improves work efficiency.

[0037] In order to ensure the stability of the cross plate 22, a limit plate 31 is vertically welded on the outer side of the arc-shaped movable plate 3, and a limit opening 32 is opened on the limit plate 31 for the cross plate 22 to pass through. When the jack applies force to the cross plate 22, the set limit opening 32 can limit the up and down swinging of the cross plate 22. At the same time, the mutual cooperation between the cross plate 22 and the limit opening 32 can also play a certain guiding role on the arc-shaped movable plate 3, making its sliding more stable.

[0038] In addition, a lifting rod 33 is welded between the horizontal plates 22 and on both sides of the fixed tube 23. The lifting rod 33 is generally in an inverted U shape. The setting of the lifting rod 33, on the one hand, can facilitate the pull-out test tool to directly hook the lifting rod 33 with a hook, thereby eliminating the process of connecting steel bars. On the other hand, it is also more convenient in the process of transporting the lifting and fastening device, and the hook can be directly passed through the lifting rod 33.

[0039] Among them, in this embodiment, the driving component includes a mounting 4 installed on the base plate 11, and a cylinder 41 is installed on the mounting 4. The piston rod of the cylinder 41 is fixed to the arc-shaped movable plate 3. By turning on the cylinder 41, the arc-shaped movable plate 3 can be easily driven to move along a predetermined direction. In addition, a concave surface that is concave inward is provided on the bearing surface of the mounting seat 4. The concave surface can increase the contact area with the outer wall of the cylinder 41, so that the cylinder 41 is more stable when working, which is beneficial to the accuracy of the test data. In order to further strengthen the cylinder 41, a plurality of arc-shaped limit rods 42 are also welded between the outer sides of the base plate 11 and the connecting plate 13. The arc-shaped limit rods 42 are perpendicular to the cylinder 41, which can well limit the cylinder 41 and reduce the left and right shaking of the cylinder 41.

[0040] When testing pipe piles, the diameter of the pipe piles is generally between 400 and 600 mm. However, when actually conducting pull-out resistance tests on pipe piles, the diameter of the pipe piles is sometimes smaller than the diameter when the arc-shaped fixed plate 2 contacts the arc-shaped movable plate 3. For example, when the diameter of the pipe pile is less than 400 mm, in order to solve this problem, in the present embodiment, an arc-shaped plate 5 is detachably attached to the inner side of the arc-shaped fixed plate 2 and the arc-shaped movable plate 3. The arc-shaped plate 5 can be fixed to the inner wall of the arc-shaped fixed plate 2 and the arc-shaped movable plate 3 by screws or by interlocking, and the thickness of the arc-shaped plate 5 can be adjusted according to actual conditions. The actual requirements can be met by increasing or decreasing the number of arc-shaped plates 5. Through the above scheme, the scope of application of the fastening device can be further increased, the cost can be further reduced, and the production of multiple fastening devices of different sizes is eliminated.

[0041] In addition, a plurality of mutually parallel convex strips 51 are vertically arranged on the inner side of the arc-shaped plate 5. In the process of clamping the pipe pile, the convex strips 51 can increase the friction between the outer wall of the pipe pile, so that the fastening device fits the pipe pile more firmly, thereby improving the stability of the data during detection.

[0042] In order to further reinforce the arc-shaped fixed plate 2 and the arc-shaped movable plate 3, reinforcement strips 52 are arranged around the outer sides of the arc-shaped fixed plate 2 and the arc-shaped movable plate 3. The number of the reinforcement strips 52 is determined according to actual conditions. The arrangement of the reinforcement strips 52 can reinforce the entire fastening device and prevent the arc-shaped fixed plate 2 and the arc-shaped movable plate 3 from deformation.

[0043] In addition, a positioning member is provided on the side where the arc-shaped fixed plate 2 and the arc-shaped movable plate 3 are in contact with each other. In the present embodiment, the positioning member is a positioning rod and a positioning hole (not shown in the figure). The positioning hole can be provided on any side where the arc-shaped fixed plate 2 and the arc-shaped movable plate 3 are close to each other, while the positioning hole is just opposite. When the arc-shaped movable plate 3 is driven to move, the positioning rod can be quickly inserted into the positioning hole, which can not only play a guiding role, but also can further strengthen the entire fastening device, so that the detection data thereof is more accurate.

[0044] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A pipe pile pull-out test fastening device, characterized in that: include: A symmetrically arranged fixing frame (1); An arc-shaped fixed plate (2) installed between the fixed frames (1) and matching the outer wall of the pipe pile; An arc-shaped moving plate (3) is slidably connected between the fixing frames (1) on both sides and matches the arc-shaped fixed plate (2); and a driving assembly mounted on the fixed frame (1) for driving the arc-shaped movable plate (3) to slide along a predetermined direction so as to cooperate with the arc-shaped fixed plate (2) to clamp the outer wall of the pipe pile; The inner sides of the arc-shaped fixed plate (2) and the arc-shaped movable plate (3) are both detachably provided with an arc-shaped pasting plate (5), and the inner side of the arc-shaped pasting plate (5) is provided with a plurality of mutually parallel convex strips (51); The outer sides of the arc-shaped fixed plate (2) and the arc-shaped movable plate (3) are ring-shaped with a plurality of mutually parallel reinforcing strips (52); The sides of the arc-shaped fixed plate (2) and the arc-shaped movable plate (3) that are in contact with each other are provided with positioning pieces for positioning the two.

2. A pipe pile pull-out test fastening device according to claim 1, characterized in that: The arc-shaped fixed plate (2) is vertically mounted with strips (21), the top of the strips (21) is horizontally fixed with symmetrical transverse plates (22), and between the transverse plates (22) are symmetrical fixing tubes (23) for connecting steel bars to pass through.

3. A pipe pile pull-out test fastening device according to claim 2, characterized in that: A limit plate (31) is vertically mounted on the arc-shaped movable plate (3), and a limit opening (32) is provided on the limit plate (31) for the horizontal plate (22) to pass through horizontally.

4. A pipe pile pull-out test fastening device according to claim 2, characterized in that: The transverse plate (22) is provided with a symmetrical lifting rod (33) for lifting the transverse plate (22).

5. The pipe pile pull-out test fastening device according to claim 1, characterized in that: The fixing frame (1) comprises: a bottom plate (11); vertical plates (12) vertically arranged on both sides of the bottom plate (11); and a connecting plate (13) installed on the top of the vertical plates (12) and parallel to the bottom plate (11), and the arc-shaped moving plate (3) is slidably connected between the bottom plate (11) and the connecting plate (13).

6. A pipe pile pull-out test fastening device according to claim 1, characterized in that: The driving assembly comprises: a mounting seat (4) mounted on a base plate (11); and a cylinder (41) mounted on the mounting seat (4).

7. A pipe pile pull-out test fastening device according to claim 6, characterized in that: The bearing surface of the mounting seat (4) is provided with an inwardly concave surface to match the outer wall of the cylinder (41), and an arc-shaped limiting rod (42) for limiting the cylinder (41) is provided between the bottom plate (11) and the connecting plate (13).

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