Lattice type enlarged head tool anchor

Abstract

The present invention discloses a grid-type enlarged head tool anchor, which includes a frame. A jack, a vertical chute, a horizontal chute and a grid enlarged head assembly are installed in the frame. The grid enlarged head assembly includes a plurality of parallel grid bars, flexible cables and tie rods. A bearing bracket is arranged below the grid bars. The bearing bracket is fixed on the tie rod and connected to the flexible cable. The jack drives the tie rod to pull the bearing bracket so that the grid bars move between the horizontal chute and the vertical chute. By the above method, the grid-type enlarged head tool anchor of the present invention is used for reaction force devices such as engineering static load tests. After being driven into the soil, through the action of the jack, the grid bars are expanded from the vertical direction to the horizontal direction to form a large-area bearing plate, providing a large anti-pulling reaction force, replacing the current static load test stacking reaction force method, adapting to various engineering environments, being recycled and reused repeatedly, reducing a large amount of load transportation and hoisting, reducing the installation difficulty, improving the construction safety, saving the on-site working time and saving costs.

Description

Technical Field

[0001] The present invention relates to the field of construction, and particularly to a grid-expanded head tool anchor. Background Art

[0002] When testing the vertical ultimate bearing capacity of a single pile by static load test, it is found that some pile foundations have a lot of surplus bearing capacity, which invisibly wastes a large amount of available resources; some pile foundations cannot meet the design requirements, which may be caused by aspects such as design or construction quality. The static load test of the foundation pile must be provided with a reaction device to provide the reaction force. The reaction devices in the process of the static load test of the foundation pile include the anchor pile reaction device, the gravity platform reaction device, the combined anchor pile and gravity reaction device, the ground anchor reaction device, etc. Among them, the anchor pile reaction device is more widely used. The anchor pile reaction beam device is to connect several anchor piles geometrically symmetric around the test pile with anchor bars to the reaction frame, and rely on the jack on the pile top to lift the reaction frame, and the connected anchor piles provide the reaction force. The existing tool anchors for static load test devices are generally disposable and cannot be reused repeatedly, and the installation method is complex, resulting in high test costs. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a grid-expanded head tool anchor for reaction devices such as engineering static load tests, which can provide a large anti-pulling reaction force, can replace the current static load test stacking reaction force method, adapt to various complex engineering environments, and can be recycled and reused repeatedly, reducing the transportation and hoisting of a large amount of loads, reducing the installation difficulty, improving the construction safety, saving the on-site working time, and saving costs.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a grid-expanded head tool anchor, including a frame, a jack is installed inside the frame, a vertical chute is vertically arranged at the lower end of the frame, the vertical chute has a hollow structure inside, a horizontal chute communicating with the hollow structure is connected to the vertical chute, a grid-expanded head assembly is movably arranged inside the hollow structure, the grid-expanded head assembly includes a plurality of grid bars arranged in parallel, the grids are connected by a soft cable, and a pull rod is installed in the middle of the soft cable, a support bracket is arranged below the grid bars, both ends of the support bracket are fixed on the pull rod and connected to the soft cable, and the jack drives the pull rod to pull the support bracket to move the grid bars between the horizontal chute and the vertical chute.

[0005] In a preferred embodiment of the present invention, the connection part between the horizontal chute and the vertical chute is in a circular arc transition connection.

[0006] In a preferred embodiment of the present invention, the number of the horizontal chutes and the grid-expanded head assemblies is one to multiple.

[0007] In a preferred embodiment of the present invention, the number of the horizontal slide grooves and grille enlarged head assemblies is multiple, and the horizontal slide grooves are connected to the middle and upper ends of the vertical slide grooves.

[0008] In a preferred embodiment of the present invention, the cross section of the support bracket is cross-shaped.

[0009] In a preferred embodiment of the present invention, the cross-section of the support frame is in the shape of a Font, a Font, a Font, a Font, a Font, a Font or a Font.

[0010] The beneficial effects of the present invention are as follows: the grid-type enlarged head tool anchor of the present invention is used for reaction devices such as engineering static load tests, can provide a large pull-out reaction force, can replace the current static load test heap load reaction method, adapt to various complex engineering environments, and can be recycled and reused, reducing the transportation and hoisting of large amounts of loads, reducing the difficulty of installation, and improving construction safety.

[0011] It saves on-site working time and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0013] Figure 1 It is a structural schematic diagram of a preferred embodiment of a grid-type enlarged head tool anchor of the present invention;

[0014] Figure 2 yes Figure 1 A top view of

[0015] Figure 3 yes Figure 1 Schematic diagram of the local structure;

[0016] Figure 4 yes Figure 1 Schematic diagram of the local structure;

[0017] Figure 5 yes Figure 1 Schematic diagram of the local structure;

[0018] Figure 6 yes Figure 1 Schematic diagram of the local structure;

[0019] The markings of the components in the accompanying drawings are as follows: 1. frame, 2. jack, 3. vertical slide, 31. hollow structure, 4. horizontal slide, 5. grille enlarged head assembly, 51. grille bar, 52. soft cable, 53. pull rod, 6. support frame, 7. second jack. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below.

[0021] The examples are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 A grille-type enlarged head tool anchor comprises a frame 1, a jack 2 is installed in the frame 1, a vertical slide groove 3 is vertically arranged at the lower end of the frame 1, the vertical slide groove 3 has a hollow structure 31 inside, the vertical slide groove 3 is connected with a horizontal slide groove 4 connected with the hollow structure 31, a grille enlarged head assembly 5 is movably arranged in the hollow structure 31, the grille enlarged head assembly 5 comprises a plurality of parallel grille bars 51, the grille bars 51 are connected by soft cables 52, and a pull rod 53 is installed on the middle part of the soft cables 52, a supporting frame 6 is correspondingly installed below the grille bars 51, both ends of the supporting frame 6 are fixed on the pull rod 53 and connected with the soft cables 52, the jack 2 drives the pull rod 53 to pull the supporting frame 6 to move the grille bars 51 between the horizontal slide groove 4 and the vertical slide groove 3.

[0023] In addition, the connection portion between the horizontal slide groove 4 and the vertical slide groove 3 is an arc-shaped transition connection.

[0024] In addition, the number of the horizontal chute 4 and the grid enlarged head assembly 5 is 2, and the horizontal chute 4 is connected to the middle and upper end of the vertical chute 3. The grid enlarged head assembly 5 can increase the force-bearing area in the soil layer and withstand the reaction force.

[0025] The horizontal slide groove 4 and the grille enlarged head assembly 5 can be used in appropriate quantities as needed, and are not limited to 1 or 2 in the present application.

[0026] In addition, the cross section of the frame 1 is as follows Figure 5 and 6 As shown, the support frame 6 is installed inside the frame 1. The frame 1 is a cross-shaped support frame, or a shape of 十, 丰, Τ, Π, ψ, 工, ×, 卐, 卍, 田, etc. The shape of the frame 1 is not limited to the above shapes, and other structures that can be used to place the grille bars 51 are also possible. The size of the support frame 6 is 300-1000mm. The shape of the frame 1 can be referred to in Figure 5 and Figure 6, and its shape is not limited to the above two structures.

[0027] The specific working principle of the grid-expanded head tool anchor of the present invention is as follows: The grid-expanded head tool anchor is symmetrically driven around the test pile, and then the position of the grid-expanded head assembly is adjusted by pulling the connecting rod to form an expanded head reaction anchor pile, and then according to.

[0028] According to the requirements of the static load test by the anchor pile method, install the reaction beam and jack to apply pressure for the test. After the test is completed, pull out the tool anchor.

[0029] The grid-expanded head tool anchor of the present invention has the following advantages: 1. Instant use and quickness. During the driving of general piles, due to the strong disturbance of the soil body, excess pore water pressure is generated in the soil around the pile, reducing the friction between the soil body and the pile shaft. The working principle of this tool anchor is to slowly cut into the soil horizontally with a grid of thinner cross-sections to form a horizontal bearing surface with a larger cross-section, which can provide a larger reaction force; its new content is manifested as 2. Lightweight design and optimized structural surface design, which can be spliced and lengthened, and the weight of the anchor body is light; its new content is manifested as 3. The diversity of selectable anchor driving equipment. Since the cross-sectional area of the anchor body is small and the anchor driving resistance is small, various equipment such as a vibratory hammer, manipulator, and hydraulic hammer with relatively small power can be used, and it is easy to pull out and has good constructability; its new content is manifested as 4. Multiple sets of equipment can be constructed simultaneously on site, improving the utilization rate of the anchor driving equipment and saving on-site working time.

[0030] Different from the prior art, the grid-expanded head tool anchor of the present invention is used as a reaction device for engineering static load tests and the like, can provide a large anti-pull reaction force, is used as a reaction device for engineering static load tests and the like, can provide a large anti-pull reaction force, can replace the current static load test stacking reaction method, is suitable for various complex engineering environments, especially suitable for random sampling detection of tests in deep foundation pits, and can be recycled and reused, reducing the transportation and hoisting of a large amount of loads, reducing the installation difficulty, improving construction safety, and multiple sets of equipment can be tested simultaneously, saving on-site working time and cost.

[0031] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A grid type expanding head tool anchor, characterized in that It includes a frame, a jack is installed in the frame, a vertical slide groove is vertically arranged at the lower end of the frame, the vertical slide groove has a hollow structure inside, the vertical slide groove is connected with a horizontal slide groove connected with the hollow structure, a grille enlargement head assembly is movably arranged in the hollow structure, the grille enlargement head assembly includes a plurality of parallel grille bars, the grilles are connected by soft cables, and a pull rod is installed on the middle part of the soft cable, a support frame is arranged under the grille bars, both ends of the support frame are fixed on the pull rod and connected to the soft cable, the jack drives the pull rod to pull the support frame to move the grille bars between the horizontal slide groove and the vertical slide groove.

2. The grid type expanding head tool anchor according to claim 1, characterized in that, The connection portion between the horizontal slide groove and the vertical slide groove is an arc-shaped transition connection.

3. The grid type enlarged head tool anchor according to claim 2, characterized in that, The number of the horizontal slide groove and grille enlarged head components is one or more.

4. The grid type expanded head tool anchor according to claim 3, characterized in that The number of the horizontal slide grooves and grille enlarged head components is multiple, and the horizontal slide groove is connected to the middle part or the lower end of the vertical slide groove.

5. The grid type expanding head tool anchor according to claim 1, characterized in that, The cross section of the support frame is cross-shaped.

6. The grid type expanding head tool anchor according to claim 1, characterized in that The cross section of the support frame is in the shape of a Font, a Font, a Font, a Font, a Font, a Font, or a Font.

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