Fabricated recoverable anchor rod and construction method thereof

Abstract

The invention relates to an assembly type recoverable anchor rod which comprises an anchor head, and a plurality of extensible reinforcing rib modules are arranged on the periphery of the outer side of the anchor head. The sleeve is in rotatable butt joint with the anchor head, and the end, in butt joint with the anchor head, of the sleeve is arranged to be in a sawtooth shape; one end of the holding rod is connected with the other end of the sleeve, and the other end of the holding rod can be held by a constructor for operation; the grouting guide pipe sequentially penetrates through the center of the holding rod, the center of the sleeve and the center of the anchor head, and the grouting guide pipe can extend to the front end of the anchor head to conduct grouting on the anchor hole. The anchor head and the anchor hole are fixedly connected in an inserted mode through the extensible reinforcing rib module on the anchor head, a reliable force bearing point is formed after grouting, the sleeve and the anchor head can be converted from a pressed state to a pulled state through the rotation angle, the sleeve and the holding rod can be taken out in a rotating mode after the anchor rod is used, operation is easy, parts can be recycled, cost is reduced, and the anchor rod is suitable for large-scale popularization and application. And the grouting guide pipe can extend to the front end of the anchor head to grout the anchor hole, so that the working efficiency is improved, and the construction quality is ensured.

Description

Technical Field

[0001] The invention relates to the field of engineering support, and in particular to an assembled recyclable anchor rod and a construction method thereof. Background Art

[0002] Foundation pit support anchor rods are commonly used devices in foundation pit support construction. Common anchor rods are solid screw rods with simple structure, but the grouting pipe needs to be extended from the side of the anchor rod during grouting. The anchor rod cannot be recycled and reused. For projects with large support workload, more anchor rods are required, resulting in great waste.

[0003] In order to vigorously promote the concept of sustainable development, recyclable anchor rods are used more and more in actual projects in various forms. However, the internal structure of most anchor rods is relatively complex, requiring on-site learning for users, and are difficult to operate, making it difficult to ensure construction quality. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art, to provide an assembled recyclable anchor rod and a construction method thereof, to solve the problems that the existing anchor rods are non-recyclable and wasteful, and the recyclable anchor rods are difficult to operate.

[0005] The technical solution to achieve the above-mentioned purpose is: an assembled recyclable anchor rod, comprising: an anchor head, a plurality of extendable reinforcement rib modules are arranged around the outer side of the anchor head; a sleeve, the sleeve and the anchor head are rotatably docked, and the ends of the sleeve and the anchor head docking are arranged to be serrated; a holding rod, the end of the holding rod is connected to the other end of the sleeve, and the other end of the holding rod can be handheld and operated by construction personnel; a grouting conduit, the grouting conduit passes through the holding rod, the sleeve and the center of the anchor head in sequence, and the grouting conduit can extend to the front end of the anchor head to grout the anchor hole.

[0006] In an assembled recyclable anchor rod of the present invention, the anchor head and the anchor hole are plugged and connected by an extendable reinforcement rib module on the anchor head, and a reliable force point is formed after grouting. The sleeve and the anchor head can be changed from a compressive state to a tensile state through a rotation angle. After the anchor rod is used up, the sleeve and the holding rod can be rotated to take out. The operation is simple, the components can be recycled and reused, and the cost can be effectively reduced. Moreover, the grouting conduit can be passed through the holding rod, the sleeve and the anchor head, and extended to the front end of the anchor head to grout the anchor hole, thereby improving work efficiency and ensuring construction quality.

[0007] A further improvement of the assembled recyclable anchor rod of the present invention is that the anchor head includes: an inserted shaft, the inserted shaft is nested in the end of the sleeve; a plurality of cam columns, the plurality of cam columns are arranged at intervals around the outer wall of the inserted shaft; and a plurality of cam prisms, the plurality of cam prisms are respectively arranged between adjacent cam columns.

[0008] A further improvement of the assembled recoverable anchor rod of the present invention is that the end of the cam prism butting against the sleeve is arranged as an inclined surface.

[0009] A further improvement of the assembled recyclable anchor rod of the present invention is that the sleeve is provided with: a plurality of rectangular grooves, the plurality of rectangular grooves are arranged at intervals at the end of the sleeve, the rectangular grooves are correspondingly engaged with the ends of the cam prisms, that is, they are in a compressed state, and the anchor head can be pushed; a plurality of arcuate tooth grooves, the plurality of arcuate tooth grooves are arranged between adjacent rectangular grooves, the arcuate tooth grooves are correspondingly engaged with the ends of the cam prisms, that is, they are in a tensile state, and the reinforcement rib module can be tensioned.

[0010] A further improvement of the assembled recoverable anchor rod of the present invention is that a reverse groove is provided on one side of the cam prism.

[0011] A further improvement of the assembled recoverable anchor rod of the present invention is that the inner wall of the arc-shaped tooth groove is provided with a tension-receiving groove, and the tension-receiving groove matches and corresponds to the tension-receiving groove on the cam prism.

[0012] A further improvement of the assembled recyclable anchor rod of the present invention is that the reinforcement rib module includes: a guide rail, which is connected to the outer wall of the cam column; a slider, which is slidably arranged on the guide rail; a reinforcement rib, wherein a side of the reinforcement rib close to the front end of the anchor head is movably connected to the guide rail; a strut, wherein both ends of the strut are respectively hingedly connected to the inner wall of the reinforcement rib and the slider, and the strut can support the reinforcement rib to extend outward.

[0013] A further improvement of the assembled recyclable anchor rod of the present invention is that a plurality of outer support rods are provided on the outer peripheral wall of the reinforcing rib.

[0014] A further improvement of the assembled recyclable anchor rod of the present invention is that the reinforcing rib module further includes: a button, which is arranged on the guide rail and can pop up to limit the sliding block.

[0015] A further improvement of the assembled recoverable anchor rod of the present invention is that it is characterized by comprising the following steps: assembling an assembled recoverable anchor rod and closing the extendable reinforcement rib module on the anchor head; rotating the sleeve to switch the anchor head to a compressed state and pressing it into the anchor hole with a holding rod; rotating and adjusting the sleeve to match the cam prism with the rectangular groove on the sleeve, pushing the holding rod forward to move the slider forward and push the reinforcement ribs to unfold synchronously; pulling back the holding rod and rotating it, and starting preliminary tensioning after the tensioned groove on the sleeve is engaged with the groove on the anchor head, and tensioning until the reinforcement ribs are firmly connected to the soil around the anchor hole; inserting a grouting conduit into the center of the holding rod and performing grouting operations; tensioning can be carried out after the grouting material at the anchor head reaches the designed strength; after the construction is completed, lightly pushing the holding rod to release the lock between the sleeve and the anchor head, and the holding rod and the connected sleeve can be taken out by reverse rotation to complete the recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a front view of an assembled recyclable anchor rod.

[0017] Figure 2 It is a side view of the anchor head of the present invention.

[0018] Figure 3 It is a side view of the sleeve of the present invention.

[0019] Figure 4 It is a side view of the reinforcing rib module of the present invention.

[0020] Figure 5 The present invention is a schematic diagram of the process of constructing a method for an assembled recyclable anchor rod.

[0021] In the figure: 10, anchor head; 101, inserted shaft; 102, cam column; 103, cam prism; 104, inverted groove; 11, reinforcement rib module; 111, guide rail; 112, slider; 113, reinforcement rib; 114, support rod; 115, outer support rod; 116, button; 12, sleeve; 121, rectangular groove; 122, arc-shaped tooth groove; 123, tension inverted groove; 13, holding rod; 14, grouting conduit; 15, clamp anchor. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] See also Figure 1 , Figure 1 The front view of an assembled recoverable anchor rod of the present invention is shown. The present invention provides an assembled recoverable anchor rod, comprising: an anchor head 10, and a plurality of extendable reinforcing rib 113 modules 11 are arranged around the outer side of the anchor head 10.

[0024] The anchor head 10 can be inserted into the inner wall of the anchor hole by extending the reinforcement rib 113 module 11 to fix the position.

[0025] The sleeve 12 is rotatably connected to the anchor head 10, and the ends of the sleeve 12 and the anchor head 10 connected to each other are configured to be sawtooth-shaped.

[0026] The inner diameter of the sleeve 12 corresponds to the diameter of the docking end of the anchor head 10 , and the sleeve 12 can rotate on the docking anchor head 10 .

[0027] A holding rod 13, an end of which is connected to the other end of the sleeve 12, and the other end of the holding rod 13 can be hand-held and operated by construction workers.

[0028] The length of the holding rod 13 is set greater than the depth of the anchor hole, so that after the holding rod 13 pushes the sleeve 12 and the anchor head 10 into the anchor hole, a certain length can be retained outside the anchor hole as a handheld operating end for construction workers.

[0029] The grouting conduit 14 sequentially passes through the holding rod 13, the sleeve 12 and the center of the anchor head 10. The grouting conduit 14 can extend to the front end of the anchor head 10 to grout the anchor hole.

[0030] The holding rod 13 , the sleeve 12 and the anchor head 10 are all provided with through holes for the grouting conduit 14 to pass through.

[0031] See also Figure 2 , showing a side view of the anchor head of the present invention. The present invention provides an assembled recyclable anchor rod, wherein the anchor head 10 comprises an inner plug shaft 101, wherein the inner plug shaft 101 is embedded in the end of the sleeve 12.

[0032] The inner plug-in shaft 101 is sleeved with the sleeve 12 , and the sleeve 12 can rotate on the inner plug-in shaft 101 .

[0033] The plurality of cam posts 102 are disposed at intervals around the outer wall of the insert shaft 101 .

[0034] The cam column 102 can limit the rotation of the sleeve 12 and serve as a gear for the sleeve 12 to push the slider 112 forward.

[0035] In this embodiment, the number of cam columns 102 is related to the size of the anchor head 10 and is set according to actual construction requirements, and is not specifically limited herein.

[0036] A plurality of cam prisms 103 are respectively disposed between adjacent cam pillars 102 .

[0037] The height of the cam prism 103 is greater than the height of the cam column 102 , and the number of the cam prisms 103 is set corresponding to the number of the cam columns 102 , which is not specifically limited here.

[0038] See also Figure 1 and Figure 2 , Figure 1 A front view of an assembled recyclable anchor rod of the present invention is shown. Figure 2 The side view of the anchor head of the present invention is shown. The present invention provides an assembled recyclable anchor rod, and the end of the cam prism 103 butting against the sleeve 12 is set as an inclined surface.

[0039] The inclined surface facilitates docking with the sleeve 12, thereby enabling smooth transition to the corresponding gear position.

[0040] See also Figure 3 , showing a side view of the sleeve of the present invention. The present invention provides an assembled recyclable anchor rod, wherein the sleeve 12 is provided with: a plurality of rectangular grooves 121, the plurality of rectangular grooves 121 are arranged at intervals at the end of the sleeve 12, and the rectangular grooves 121 are correspondingly engaged with the end of the cam prism 103, that is, they are in a compressed state, and the anchor head 10 can be pushed.

[0041] The positions and number of the rectangular grooves 121 correspond to the positions and number of the cam prisms 103 , and the sizes of the rectangular grooves 121 correspond to the sizes of the cam prisms 103 .

[0042] A plurality of arcuate tooth grooves 122 are arranged between adjacent rectangular grooves 121 . The arcuate tooth grooves 122 are clamped with the ends of the cam prisms 103 to be in a tension state, and the reinforcing rib module 11 can be tensioned.

[0043] The arc surface of the arc-shaped tooth groove 122 is arranged in the same direction as the inclined surface of the cam prism 103 , and the arc-shaped tooth groove 122 is used for rotationally adjusting the connection relationship between the holding rod 13 and the anchor head 10 .

[0044] In this embodiment, the rectangular groove 121 and the arc-shaped tooth groove 122 are both arranged at the end where the sleeve 12 and the anchor head 10 are connected.

[0045] See also Figure 2 , showing a side view of the anchor head of the present invention. The present invention provides an assembled recyclable anchor rod, wherein a side of the cam prism 103 is provided with an inverted groove 104 .

[0046] The inverted groove 104 is disposed on the side of the cam prism 103 opposite to the inclined surface, and is used to connect with the holding rod 13 to withstand the tension.

[0047] See also Figure 3, showing a side view of the sleeve of the present invention. The present invention provides an assembled recoverable anchor rod, wherein the inner wall of the arc-shaped tooth groove 122 is provided with a tension groove 123 , and the tension groove 123 matches and corresponds to the groove 104 on the cam prism 103 .

[0048] The tensioned inverted groove 123 is arranged on a side opposite to the arc surface of the arc-shaped tooth groove 122 . The sizes of the tensioned inverted groove 123 and the inverted groove 104 match and correspond to each other, and they can be hooked with each other after docking.

[0049] See also Figure 4 , showing a side view of the reinforcing rib module of the present invention. The present invention provides an assembled recyclable anchor rod, wherein the reinforcing rib module 11 comprises: a guide rail 111 , wherein the guide rail 111 is connected to the outer wall of the cam column 102 .

[0050] The guide rail 111 is arranged parallel to the cam prism 103 , and the length of the guide rail 111 is smaller than the length of the cam prism 102 .

[0051] In this embodiment, the guide rail 111 is correspondingly disposed at the middle position of the outer wall of the cam column 102 .

[0052] The slider 112 is slidably disposed on the guide rail 111 .

[0053] The number of guide sliding blocks 112 is set according to actual needs and is not specifically limited here.

[0054] In this embodiment, the sliding directions of the sliders 112 on each guide rail 111 are set to be consistent, that is, all the sliders 112 move forward or backward at the same time.

[0055] The reinforcing rib 113 is movably connected to the guide rail 111 at one side of the reinforcing rib 113 close to the front end of the anchor head 10 .

[0056] The length of the reinforcing rib 113 corresponds to the length of the guide rail 111 .

[0057] The support rod 114 has two ends which are respectively hingedly connected to the inner wall of the reinforcing rib 113 and the slider 112. The support rod 114 can support the reinforcing rib 113 to extend outward, making it convenient for the reinforcing rib 113 to move and be inserted into the side wall of the anchor hole for fastening.

[0058] The slider 112 slides on the guide rail 111 to drive one side of the support rod 114 to move, and further drives the support rod 114 to support the reinforcing rib 113, so that the reinforcing rib 113 rotates outward.

[0059] See also Figure 4 , showing a side view of the reinforcing rib module of the present invention. The present invention provides an assembled recyclable anchor rod, wherein the outer peripheral wall of the reinforcing rib 113 is provided with a plurality of outer support rods 115 .

[0060] The outer support rod 115 is arranged perpendicular to the outer wall of the reinforcing rib 113 to further enhance the fixing effect between the reinforcing rib 113 and the side wall of the anchor hole.

[0061] See also Figure 4 , showing a side view of the reinforcing rib module of the present invention. The present invention provides an assembled recyclable anchor rod, the reinforcing rib module 11 further includes: a button 116, the button 116 is arranged on the guide rail 111, and the button 116 can be popped up to limit the slider 112.

[0062] Among them, the button 116 is of a unilateral press-retractable type, which can retract under the pressure of the slider 112 when the slider 112 moves forward. The slider 112 can slide over the button 116. After the slider 112 passes, the button 116 rebounds to prevent the slider 112 from returning, thereby realizing the one-way passage of the slider 112.

[0063] See also Figure 5 , showing a schematic flow chart of a construction method of an assembled recyclable anchor rod of the present invention. The present invention provides a construction method of an assembled recyclable anchor rod, comprising the following steps:

[0064] Execute step S210: assemble a prefabricated recyclable anchor rod, and close the extendable reinforcing rib module 11 on the anchor head 10.

[0065] The reinforcing rib module 11 on the anchor head 10 needs to be tested before use to ensure that the extendable function can be used. The reinforcing rib module 11 needs to be closed before pushing in to prevent affecting the pushing operation of the anchor head 10. Then, step S220 is executed.

[0066] Execute step S220: rotate the sleeve 12 to switch the anchor head 10 to a compressed state, and use the holding rod 13 to press it into the anchor hole.

[0067] Before the holding rod 13 is inserted into the hole, it is important to engage the arc-shaped tooth groove 122 of the sleeve 12 with the end of the cam prism 103, and then, execute step S230.

[0068] Execute step S230: rotate the adjustment sleeve 12 to make the cam prism 103 match the rectangular groove 121 on the sleeve 12, push the holding rod 13 forward, move the slider 112 forward, and push the reinforcing rib 113 to unfold synchronously.

[0069] When the holding rod 13 is pushed and the rebound button 116 rebounds, the user can continue to push the holding rod 13, and stop pressing and applying force after the button 116 is pushed tightly. Then, the step S240 is executed.

[0070] Execute step S240: pull back the holding rod 13 and rotate it, and start preliminary tensioning after the tension groove 123 on the sleeve 12 is engaged with the groove 104 on the anchor head 10, and tension until the reinforcing bar 113 is firmly connected to the soil around the anchor hole.

[0071] After the end of the cam prism 103 is felt to rotate into the arc-shaped tooth groove 122, it is necessary to slightly rotate and pull it so that the tension groove 123 on the sleeve 12 is correspondingly engaged with the groove 104 on the anchor head 10, and then execute step S250.

[0072] Execute step S250: insert the grouting conduit 14 into the center of the holding rod 13 and perform the grouting operation.

[0073] Among them, this grouting only needs to be performed on the anchor head 10, which is convenient for the later disassembly of the anchor rod and reuse. For the anchor holes to be grouted, the grouting amount corresponding to each anchor hole needs to be calculated in advance, and the grouting is stopped after the predetermined grouting amount is reached to prevent the excess grout from blocking the later anchor rod recovery, and then maintenance is performed, and then step S260 is executed.

[0074] Execute step S260: tensioning can be performed after the grouting material at the anchor head 10 reaches the designed strength.

[0075] During the waiting process, the holding rod 13 needs to be anchored outside the anchor hole with a clamping anchor 15. The clamping anchor 15 includes components such as a butterfly-shaped pressure ring and an annular tray to prevent the anchor rod from being displaced due to external forces. Then, step S270 is executed.

[0076] Execute step S270: After the construction is completed, gently push the holding rod 13 to release the lock between the sleeve 12 and the anchor head 10, and rotate it in the opposite direction to remove the holding rod 13 and the connected sleeve 12, thus completing the recovery.

[0077] The unlocking allows the tension groove 123 on the sleeve 12 and the groove 104 on the anchor head 10 to be separated from each other, and they can be recycled and reused to reduce costs.

[0078] The present invention is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various changes to the present invention according to the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be the scope defined by the attached claims.

Claims

1. An assembled recyclable anchor, characterized in that: include: An anchor head, wherein a plurality of extendable reinforcing rib modules are arranged around the outer side of the anchor head; A sleeve, wherein the sleeve and the anchor head are rotatably connected, and the end of the sleeve and the anchor head connected is configured to be sawtooth-shaped; A holding rod, the end of which is connected to the other end of the sleeve, and the other end of the holding rod can be held by construction workers for operation; A grouting conduit is provided, wherein the grouting conduit sequentially passes through the holding rod, the sleeve and the center of the anchor head, and the grouting conduit can extend to the front end of the anchor head to grout the anchor hole.

2. The assembled recyclable anchor rod according to claim 1, characterized in that: The anchor head comprises: An interpolated shaft, the interpolated shaft being nested into an end of the sleeve; A plurality of cam posts, wherein the plurality of cam posts are arranged at intervals around the outer wall of the inner insertion shaft; A plurality of cam prisms are respectively arranged between adjacent cam columns.

3. The assembled recyclable anchor rod according to claim 2, characterized in that: The end where the cam prism butts against the sleeve is arranged as an inclined surface.

4. The assembled recyclable anchor rod according to claim 3, characterized in that: The sleeve is provided with: A plurality of rectangular grooves, wherein the plurality of rectangular grooves are arranged at intervals at the end of the sleeve, and the rectangular grooves are correspondingly engaged with the end of the cam prism, that is, they are in a compressed state, and the anchor head can be pushed; A plurality of arc-shaped tooth grooves are provided between adjacent rectangular grooves, and the arc-shaped tooth grooves are clamped with the ends of the cam prisms to be in a tension state, so that the reinforcing rib module can be tensioned.

5. The assembled recyclable anchor rod according to claim 4, characterized in that: A reverse groove is arranged on one side of the cam prism.

6. The assembled recyclable anchor rod according to claim 5, characterized in that: The inner wall of the arc-shaped tooth groove is provided with a tensioned inverted groove, and the tensioned inverted groove matches and corresponds to the inverted groove on the cam prism.

7. The assembled recyclable anchor rod according to claim 2, characterized in that: The reinforcement module comprises: A guide rail connected to the outer wall of the cam column; A slider, the slider being slidably disposed on the guide rail; A reinforcing rib, wherein a side of the reinforcing rib close to the front end of the anchor head is movably connected to the guide rail; A support rod, both ends of which are respectively hingedly connected to the inner side wall of the reinforcing rib and the sliding block, and the support rod can support the reinforcing rib to extend outward.

8. The assembled recyclable anchor rod according to claim 7, characterized in that: The outer peripheral wall of the reinforcing rib is provided with a plurality of outer support rods.

9. The assembled recyclable anchor rod according to claim 7, characterized in that: The reinforcement module also includes: A button is arranged on the guide rail, and the button can pop up to limit the sliding block.

10. A construction method for an assembled recyclable anchor according to any one of claims 1 to 9, characterized in that: The steps include: A fabricated recyclable anchor is assembled and the extendable reinforcement module on the anchor head is closed; The sleeve is rotated to switch the anchor head to a compressed state, and the anchor head is pressed into the anchor hole with a holding rod; The sleeve is rotated and adjusted to make the cam prism match and correspond with the rectangular groove on the sleeve, and the holding rod is pushed forward to make the slider move forward and push the reinforcing ribs to unfold synchronously; Pull back the holding rod and rotate it, and start the initial tensioning after the tension groove on the sleeve is connected with the groove on the anchor head, and tension until the reinforcing bar is firmly connected with the soil around the anchor hole; Insert a grouting conduit into the center of the holding rod and perform grouting operation; After the grouting material at the anchor head reaches the designed strength, tensioning can be carried out; After the construction is completed, the holding rod is gently pushed to release the lock between the sleeve and the anchor head, and the holding rod and the connected sleeve can be taken out by reverse rotation to complete the recovery.

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