Anchor rod connector

Abstract

The utility model provides an anchor rod connector, and relates to the field of anchor rod grouting support. According to the scheme, the anchor rod connector comprises a connecting pipe, an expansion assembly and a control assembly. Threads matched with the anchor rod are arranged on the inner side wall of the connecting pipe; the control assembly is used for controlling the preset expansion degree of the expansion assembly; and the expansion assembly is mounted on the outer side wall of the connecting pipe, is used for expanding to a preset degree, and is suitable for anchor rods of different sizes. The anchor rod grouting device can be suitable for anchor rods of different sizes, grouting connectors do not need to be switched repeatedly, and therefore construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of bolt grouting support, and particularly to a bolt connector. Background Technique

[0002] The grouting bolt is a new product developed according to the actual needs of tunnel engineering, slope treatment engineering and coal mine roadway engineering in China. The current main products include: ordinary hollow grouting bolt, self-advancing hollow grouting bolt, swelling shell type hollow grouting bolt and combined hollow grouting bolt. The bolt body of the ordinary hollow grouting bolt adopts a hollow design, and the middle hole of the rod body is used as the high-pressure air and water passage for drilling and the grouting passage. Compared with the solid rod body, the hollow rod body design can obtain better stiffness and shear strength.

[0003] Before bolt grouting, it is necessary to drill a bolt hole first, then install the bolt in the bolt hole, and finally use a grouting machine to grout the bolt, so that the grout can be conveyed into the bolt hole, thereby tightly connecting the bolt with the rock and soil layer to achieve the purpose of strengthening the soil and rock mass. In the prior art, the grouting pipe is connected to the bolt through a grouting joint. One end of the grouting joint is connected to the bolt, and the other end of the grouting joint is connected to the grouting pipe; different specifications and models of bolts are required in the construction process to meet different construction scenarios; however, the bolt and the grouting joint are generally used in a supporting manner. Construction workers need to select a grouting joint with a corresponding size according to the size of the bolt. Construction workers need to prepare grouting joints of multiple sizes before construction, and different grouting joints need to be replaced for different bolts during construction, which is very cumbersome. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bolt connector, which can propose a solution for the deficiencies of the prior art, can be applicable to bolts of different sizes, and does not need to repeatedly switch the grouting joint, thereby improving the construction efficiency.

[0005] The utility model is realized through the following technical solutions:

[0006] A bolt connector includes a connecting pipe, an expanding component and a control component; in the first working state, the inner side wall of the connecting pipe is detachably connected to the bolt; in the second working state, the expanding component is installed on the outer side wall of the connecting pipe, and the control component is used to control the expanding component to expand around. After the expanding component expands, it can be connected to the inner side wall of the bolt with a corresponding size.

[0007] Further, in the utility model, the above-mentioned expanding component includes a first blocking member and an expanding member with an elastic structure; the expanding member is sleeved on the connecting pipe; the first blocking member is detachably installed on one side of the connecting pipe, and the first blocking member is used to prevent the expanding member from falling off the connecting pipe.

[0008] Further, in the utility model, the first blocking member is threadedly connected to the connecting pipe.

[0009] Further, in the utility model, the number of the above expansion members is multiple, and the multiple expansion members are sequentially sleeved on the connecting pipe.

[0010] Further, in the utility model, the above further includes an auxiliary expansion member; the auxiliary expansion member is sleeved on the connecting pipe, and an auxiliary expansion member is provided between every two adjacent expansion members; the auxiliary expansion member is used to increase the stress area of the expansion member.

[0011] Further, in the utility model, the above control assembly includes a second blocking member and a propulsion sleeve, and the second blocking member is connected to the propulsion sleeve; the propulsion sleeve is sleeved on the connecting pipe; the expansion member is located between the first blocking member and the second blocking member.

[0012] Further, in the utility model, the above propulsion sleeve is in threaded fit with the connecting pipe.

[0013] Further, in the utility model, the above further includes a positioning rod; a positioning groove adapted to the positioning rod is provided on the outer side wall of the connecting pipe, and the positioning rod is detachably connected to the positioning groove.

[0014] Further, in the utility model, the above further includes a guiding assembly and a slurry collecting device; the guiding assembly includes a guiding pipe, a first valve and a second valve; the guiding pipe is provided with a first connection port, a second connection port and a third connection port; the connecting pipe is detachably connected to the first connection port, and the first valve is installed at the first connection port; the slurry collecting device is connected to the second connection port, and the second valve is installed at the second connection port.

[0015] Further, in the utility model, the above connecting pipe is in threaded fit with the first connection port.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The inner side wall of the connecting pipe can be directly connected to the anchor rod with the smallest size, and the outer side wall of the connecting pipe is provided with an expansion assembly. The control assembly can control the expansion assembly to expand to any degree, which is applicable to anchor rods of different sizes; construction workers do not need to prepare a large number of grouting joints of different sizes to adapt to different sizes of anchor rods, and the grouting joint does not need to be replaced during the construction process, which not only improves the construction efficiency, but also avoids the phenomenon of on-site chaos caused by high-frequency replacement of the grouting joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model and constitute a part of this application, and do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0019] Figure 1 It is a schematic diagram of the first state of the anchor rod connector;

[0020] Figure 2 It is a schematic diagram of the second state of the bolt connector;

[0021] Figure 3 It is a longitudinal sectional view of the connecting pipe;

[0022] Figure 4 Schematic diagram of the guide pipe.

[0023] Markings in the drawings and the corresponding names of components:

[0024] 1 - connecting pipe, 2 - first blocking member, 3 - expanding member, 4 - auxiliary expanding member, 5 - propulsion sleeve, 6 - second blocking member, 7 - positioning groove, 8 - positioning rod, 9 - guide pipe, 10 - first connection port, 11 - second connection port, 12 - third connection port, 13 - first valve, 14 - second valve. Specific implementation manner

[0025] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and do not limit the present utility model.

[0026] Embodiment

[0027] Please refer to Figures 1 to 4 .

[0028] This embodiment provides a bolt connector, including a connecting pipe 1, an expanding assembly and a control assembly; in the first working state, the inner side wall of the connecting pipe 1 is detachably connected to the bolt; in the second working state, the expanding assembly is installed on the outer side wall of the connecting pipe 1, and the control assembly is used to control the expanding assembly to expand around, and after the expanding assembly expands, it can be connected to the inner side wall of the bolt with a corresponding size.

[0029] In this embodiment, in the reinforcement and support projects in geological strata such as rocks and soils, the bolt grouting process is required to increase the stability and bearing capacity of the project. Construction workers need to conduct detailed surveys and analyses on the construction site in the early stage. The construction workers drill bolt holes at the preset positions through a drilling machine, then put one end of a bolt with a suitable size into the bolt hole, and then connect the connecting pipe 1 to the other end of the bolt. The connecting pipe 1 can be applicable to bolts of different sizes. Then, connect the grouting pipe of the grouting machine to the connecting pipe 1. Finally, the grouting machine outputs slurry, and the slurry sequentially enters the bolt hole from the grouting pipe, the connecting pipe 1, and the bolt. The slurry makes the bolt tightly connected to the inner side wall of the bolt hole, thereby achieving the effect of strengthening the soil and rock mass. Specifically, the inner diameter of the connecting pipe 1 is adapted to the outer diameter of the smallest-sized bolt in the prior art. The outer side wall of the standard part of the bolt is provided with an external thread, and the inner side wall of the connecting pipe 1 is provided with an internal thread. The outer diameter of the smallest-sized bolt is adapted to the inner diameter of the connecting pipe 1. The relative rotation of the bolt and the connecting pipe 1 can realize the connection and disassembly functions. After one end of the connecting pipe 1 is connected to the bolt, the other end of the connecting pipe 1 can be connected to the grouting pipe (the output end of the grouting machine is connected to the grouting pipe), and the grouting machine can grout into the bolt; further, the size of the connecting pipe 1 is adapted to the size of the grouting pipe. The grouting pipe is made of a soft material. After the grouting pipe is sleeved on the connecting pipe 1, it can be tied with a steel wire to achieve the sealing effect at the connection between the grouting pipe and the connecting pipe 1; if the grouting pipe is directly connected to the bolt, due to the uneven sizes of the bolts, the difference between the outer diameter of the smaller-sized bolt and the inner diameter of the grouting pipe is relatively large. When the smaller-sized bolt is connected to the grouting pipe, the gap between the bolt and the grouting pipe is relatively large, and it is difficult to achieve the sealing effect if tied with a steel wire. Further, when the connecting pipe 1 is connected to a larger-sized bolt, the inner diameter of the bolt is greater than the outer diameter of the connecting pipe 1. The bolt is sleeved on the side of the connecting pipe 1 where the expansion component is provided. The construction worker controls the expansion component through the control component. After being controlled, the expansion component can expand and is applicable to larger-sized bolts; the expansion component can expand further and is applicable to even larger-sized bolts; when the expansion component expands in all directions, it can fill the gap between the bolt and the connecting pipe 1, thereby realizing the connection between the bolt and the connecting pipe 1. When disassembling the larger-sized bolt, the construction worker controls the expansion component through the control component. After being controlled, the expansion component releases the expanded state and returns to the initial state, and the construction worker can easily remove the connecting pipe 1 from the bolt. The inner side wall of the connecting pipe 1 of the present application can be directly connected to the smallest-sized bolt, and the expansion component is installed on the outer side wall of the connecting pipe 1. The control component can control the expansion component to expand to any degree and is applicable to bolts of different sizes; construction workers do not need to prepare a large number of grouting joints to adapt to bolts of different sizes, and do not need to replace the grouting joints during the construction process, which not only improves the construction efficiency but also avoids the phenomenon of on-site chaos caused by high-frequency replacement of grouting joints.

[0030] Further, in the utility model, the expansion assembly includes a first blocking member 2 and an expansion member 3 of an elastic structure; the expansion member 3 is sleeved on the connecting pipe 1; the first blocking member 2 is detachably installed on one side of the connecting pipe 1, and the first blocking member 2 is used to prevent the expansion member 3 from falling off the connecting pipe 1.

[0031] In this embodiment, the expansion member 3 can be a rubber sleeve, and the rubber sleeve is sleeved on one side of the connecting pipe 1; the first blocking member 2 is installed at the end of the connecting pipe 1, and the first blocking member 2 extends a preset distance around, which can block the shape of the expansion member 3 after expansion. The expansion member 3 is located between the first blocking member 2 and the control assembly. The control assembly can press against the expansion member 3. The control assembly and the first blocking member 2 sandwich the expansion member 3 in the middle. The control assembly continues to press against the expansion member 3, and the expansion member 3 deforms and its volume increases. The deformed expansion member 3 can fill the gap between the connecting pipe 1 and the anchor rod, and the connecting pipe 1 can be connected to anchor rods of different sizes.

[0032] Further, in the utility model, the first blocking member 2 is threadedly connected to the connecting pipe 1.

[0033] In this embodiment, the first blocking member 2 is provided with a connection port adapted to the connecting pipe 1, and the inner side wall of the connection port is in threaded cooperation with the outer side wall of the connecting pipe 1. The first blocking member 2 can be quickly connected or disassembled from the connecting pipe 1, and the first blocking member 2 and the expansion member 3 can be replaced separately after being damaged, saving maintenance costs.

[0034] Further, in the utility model, the number of the expansion members 3 is multiple, and the multiple expansion members 3 are sequentially sleeved on the connecting pipe 1.

[0035] In this embodiment, the expansion member 3 can be a rubber sleeve. The expansion members 3 are sequentially sleeved on one side of the connecting pipe 1. All the multiple expansion members 3 are located between the first blocking member 2 and the control assembly. When the control assembly presses against the multiple expansion members 3, all the multiple expansion members 3 deform; since the deformation direction of the expansion member 3 is uncontrollable when it deforms, if the expansion member 3 does not expand evenly around when the connecting pipe 1 is connected to the anchor rod, it will cause the problem that the sealing performance between the connecting pipe 1 and the anchor rod is unqualified; if the connecting pipe 1 is sleeved with multiple expansion members 3, when the connecting pipe 1 is connected to the anchor rod, all the multiple expansion members 3 deform, which can reduce the problem of having gaps between the connecting pipe 1 and the anchor rod and improve the sealing performance between the connecting pipe 1 and the anchor rod.

[0036] Further, in the utility model, an auxiliary expansion member 4 is further included; the auxiliary expansion member 4 is sleeved on the connecting pipe 1, and an auxiliary expansion member 4 is provided between adjacent two expansion members 3; the auxiliary expansion member 4 is used to increase the stress area of the expansion member 3.

[0037] In this embodiment, the auxiliary expansion member 4 can be a rigid gasket. The rigid gasket is sleeved on the connecting pipe 1, and a rigid gasket is provided between adjacent expansion members 3. The rigid gasket extends a preset distance around, so as to increase the force-bearing area between the rigid gasket and the expansion member 3. When the control assembly presses against the plurality of expansion members 3, the expansion members 3 will press against the rigid gasket after being stressed, and the expansion members 3 will deform. After the expansion members 3 deform, they will continue to press against the rigid gasket, and the rigid gasket will give the expansion members 3 a reaction force to continue to deform the expansion members 3. After multiple deformations, the surface area of the expansion members 3 increases, and the gap between the connecting pipe 1 and the anchor rod can be filled, increasing the sealing performance between the connecting pipe 1 and the anchor rod.

[0038] Further, in the utility model, the control assembly includes a second blocking member 6 and a propulsion sleeve 5. The second blocking member 6 is connected to the propulsion sleeve 5; the propulsion sleeve 5 is sleeved on the connecting pipe 1; the expansion member 3 is located between the first blocking member 2 and the second blocking member 6.

[0039] In this embodiment, the second blocking member 6 is installed on one side of the connecting pipe 1, and the second blocking member 6 extends a preset distance around, which can block the shape of the expansion member 3 after expansion. The propulsion sleeve 5 is sleeved on the connecting pipe 1. When the connecting pipe 1 is connected to an anchor rod with a larger size, the construction worker can control the propulsion sleeve 5 to drive the second blocking member 6 to move towards the expansion member 3. The second blocking member 6 and the first blocking member 2 can squeeze the expansion member 3 inwardly in both directions, so that the expansion member 3 deforms to fill the gap between the connecting pipe 1 and the anchor rod. Further, a handle can be installed on the outer side wall of the propulsion sleeve 5 to facilitate the construction worker to operate.

[0040] Further, in the utility model, the propulsion sleeve 5 is in threaded fit with the connecting pipe 1.

[0041] In this embodiment, the propulsion sleeve 5 is in threaded fit with the connecting pipe 1. The construction worker relatively rotates the propulsion sleeve 5 and the connecting pipe 1, and the propulsion sleeve 5 drives the second blocking member 6 to move towards the expansion member 3. The second blocking member 6 and the first blocking member 2 can press against the expansion member 3, so that the expansion member 3 deforms to fill the gap between the connecting pipe 1 and the anchor rod.

[0042] Further, in the utility model, it further includes a positioning rod 8; a positioning groove 7 adapted to the positioning rod 8 is provided on the outer side wall of the connecting pipe 1, and the positioning rod 8 is detachably connected to the positioning groove 7.

[0043] In this embodiment, a positioning groove 7 is provided on the outer side wall of the connecting pipe 1. The positioning groove 7 is located on the side away from the first blocking member 2. The positioning rod 8 is in threaded fit with the positioning groove 7. After the positioning rod 8 is connected to the positioning groove 7, when the construction worker rotates the propulsion sleeve 5, the positioning rod 8 can be held to prevent the connecting pipe 1 from rotating together with the propulsion sleeve 5 when the propulsion sleeve 5 is rotated, reducing the difficulty of on-site construction operation.

[0044] Further, in the utility model, it further includes a guiding assembly and a slurry collecting device; the guiding assembly includes a guiding pipe 9, a first valve 13 and a second valve 14; the guiding pipe 9 is provided with a first connection port 10, a second connection port 11 and a third connection port 12; the connecting pipe 1 is detachably connected to the first connection port 10, and the first valve 13 is installed at the first connection port 10; the slurry collecting device is connected to the second connection port 11, and the second valve 14 is installed at the second connection port 11.

[0045] In this embodiment, the guiding pipe 9 is a tee pipe. The first connection port 10 of the guiding pipe 9 can be connected to the connecting pipe 1, the second connection port 11 of the guiding pipe 9 can be connected to the slurry collecting device, and the third connection port 12 of the guiding pipe 9 can be connected to the grouting pipe; before grouting, the second valve 14 is closed and the first valve 13 is opened; when the grouting machine starts grouting, the slurry is transported from the grouting pipe to the guiding pipe 9, then from the guiding pipe 9 to the connecting pipe 1, and finally from the connecting pipe 1 to the anchor rod; (During the grouting process, if the grouting pressure value is greater than the designed grouting pressure value, the outlet of the second valve 14 can be slightly opened for liquid separation to reduce the grouting pressure value.) After the grouting is completed, the second valve 14 is opened, the pressure in the guiding pipe 9 is relieved from the second connection port 11, and the slurry remaining in the guiding pipe 9 and the connecting pipe 1 is discharged from the second connection port 11 and enters the slurry collecting device; if the connecting pipe 1 is directly used to transport the slurry, when the connecting pipe 1 is removed from the anchor rod after the grouting is completed, due to the relatively high pressure in the connecting pipe 1, the problem of slurry spraying will occur. By using the structure of the guiding pipe 9, it can also alleviate the damage of the slurry to the on-site civilized construction.

[0046] Further, in the utility model, the connecting pipe 1 is in threaded fit with the first connection port 10.

[0047] In this embodiment, the connecting pipe 1 can be quickly installed and disassembled with the guiding pipe 9, which can improve the construction efficiency; if the guiding pipe 9 is damaged, it can be replaced separately, saving the subsequent maintenance cost; the size of the third connection port 12 of the guiding pipe 9 is adapted to the grouting pipe, and it is easier to perform sealing treatment when the third connection port 12 is connected to the grouting pipe.

[0048] In summary, the embodiment of the present utility model provides an anchor connector. The inner side wall of the connecting pipe 1 can be directly connected to the smallest-sized anchor rod. The outer side wall of the connecting pipe 1 is provided with an expansion assembly, and the control assembly can control the expansion assembly to expand to any degree, which is applicable to anchor rods of different sizes; construction workers do not need to prepare a large number of grouting joints of different sizes to adapt to different-sized anchor rods, and there is no need to replace the grouting joint during the construction process, which not only improves the construction efficiency but also avoids the phenomenon of on-site chaos caused by frequent replacement of the grouting joint.

[0049] The specific embodiments described above have further elaborated in detail the purpose, technical solution and beneficial effects of the present utility model. It should be understood that the above description is only the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anchor connector, characterized in that, It includes a connecting pipe, an expansion assembly and a control assembly; In the first working state, the inner side wall of the connecting pipe is detachably connected to the anchor rod; In the second working state, the expansion assembly is installed on the outer side wall of the connecting pipe, the control assembly is used to control the expansion assembly to expand around, and after the expansion assembly expands, it can be connected to the inner side wall of the anchor rod with a corresponding size.

2. The anchor connector according to claim 1, wherein The expansion assembly includes a first blocking member and an expansion member of an elastic structure; The expansion member is sleeved on the connecting pipe; The first blocking member is detachably installed on one side of the connecting pipe, and the first blocking member is used to prevent the expansion member from falling off the connecting pipe.

3. The anchor connector according to claim 2, wherein, The first blocking member is threadedly connected to the connecting pipe.

4. The anchor connector according to claim 2, wherein The number of the expansion members is multiple, and the multiple expansion members are sequentially sleeved on the connecting pipe.

5. The anchor connector according to claim 4, wherein It further includes an auxiliary expansion member; The auxiliary expansion member is sleeved on the connecting pipe, and the auxiliary expansion member is provided between adjacent two of the expansion members; The auxiliary expansion member is used to increase the stress area of the expansion member.

6. The anchor connector according to any one of claims 2 to 5, characterized in that, The control assembly includes a second blocking member and a propulsion sleeve, and the second blocking member is connected to the propulsion sleeve; The propulsion sleeve is sleeved on the connecting pipe; The expansion member is located between the first blocking member and the second blocking member.

7. The anchor connector according to claim 6, wherein The propulsion sleeve is in threaded fit with the connecting pipe.

8. The anchor connector according to claim 7, characterized in that, It further includes a positioning rod; A positioning groove adapted to the positioning rod is provided on the outer side wall of the connecting pipe, and the positioning rod is detachably connected to the positioning groove.

9. The anchor connector according to any one of claims 1 to 5, characterized in that, It further includes a guiding assembly and a slurry collecting device; The guiding assembly includes a guiding pipe, a first valve and a second valve; the guiding pipe is provided with a first connection port, a second connection port and a third connection port; The connecting pipe is detachably connected to the first connection port, and the first valve is installed at the first connection port; The slurry collecting device is connected to the second connection port, and the second valve is installed at the second connection port.

10. The bolt connector according to claim 9, characterized in that, The connecting pipe is in threaded fit with the first connection port.

Images