Anchor rod anchoring force combined detection device

Abstract

The utility model provides an anchor rod anchoring force combination detection device, which relates to the mine anchor net cable technology field, and comprises a pull rod, a pull rod head, a sleeve and a pneumatic anchor cable tensioning machine, one end of the pull rod is connected with one end of the pull rod head, the inner side of the pull rod head is provided with a screw groove, the screw groove is used for being in threaded connection with one end of an anchor rod, and the sleeve is connected with the pneumatic anchor cable tensioning machine. The anchor rod is anchored on a top plate, the sleeve is used for movably sleeving one end of the outer side of the pull rod, one end of the sleeve is supported on the top plate, and the sleeve is connected with a protective chain; the pull rod and the pull rod head form the tension rod, the pull rod head is used for being connected with a detected anchor rod, the sleeve is sleeved at the joint, one person supports the sleeve and the other person installs the jack for pressurizing and pulling during anchoring force testing operation, the whole testing operation procedure can be completed by two persons, at least one person can be saved, and the testing efficiency is improved. The protective chain on the sleeve is hung on the anchor net of the top plate and can be prevented from falling off and hurting people, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine anchor net cables, in particular to a combined detection device for anchor rod anchoring force. Background Art

[0002] Anchor rods are the most basic component of tunnel support in contemporary coal mines. They reinforce the surrounding rock of the tunnel so that the surrounding rock can support itself. Anchor rods are not only used in mines, but also in engineering technology to reinforce the main body of slopes, tunnels, and dams. As a tensile member deep in the stratum, one end of the anchor rod is connected to the engineering structure, and the other end is deep in the stratum. The whole anchor rod is divided into a free section and an anchoring section. The free section refers to the area where the tension at the anchor rod head is transmitted to the anchor body. Its function is to apply prestress to the anchor rod.

[0003] In the use of mine anchor net cable support tunnel support anchor rods, equipment lifting anchor rods and ground anchor rods, it is necessary to detect the anchoring force of the anchor rod to ensure the safety of the project. Traditional anchor rod tension gauges are generally composed of vulnerable parts such as jacks, manual pumps, pressure gauges, etc., which are prone to failure and difficult to repair. The manual pump is bulky, the operation process is complicated and labor-intensive, and the labor intensity of operators is high. There are safety risks of joint collapse and parts falling off and hitting people during operation. Therefore, the utility model proposes an anchor rod anchoring force combined detection device to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes an anchor rod anchoring force combination detection device, the entire test operation procedure of the anchor rod anchoring force combination detection device can be completed by two people, at least one person can be saved, and it can prevent falling and injuring people, thereby improving safety.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: an anchor bolt anchoring force combined detection device, including a pull rod, a pull rod head, a sleeve and a pneumatic anchor cable tensioning machine, one end of the pull rod is connected to one end of the pull rod head, the inner side of the pull rod head is provided with a wire groove, the wire groove is used for threaded connection with one end of the anchor rod, the anchor rod is anchored on the top plate, the sleeve is used for movably sleeved on one end of the outer side of the pull rod, and one end of the sleeve is supported on the top plate, the sleeve is connected to a protective chain, and the protective chain is hung on the anchor net of the top plate;

[0006] The pneumatic anchor cable tensioning machine comprises a jack, a high-pressure oil pipe and a pneumatic pump. The jack is installed on the outside of the pull rod, the high-pressure oil pipe is connected to the output end of the pneumatic pump, and one end of the high-pressure oil pipe is connected to the jack.

[0007] A further improvement is that a screw is provided at one end of the outer side of the pull rod, the screw is matched with the wire groove, and the pull rod is installed and fixed by welding with the wire groove of the pull rod head through the screw.

[0008] A further improvement is that an inner cavity is provided inside the sleeve, and an open groove is provided at one end inside the sleeve, and the open groove is communicated with the inner cavity.

[0009] A further improvement is that the diameter of the inner cavity is matched with the outer diameter of the pull rod head, the diameter of the opening slot is matched with the outer diameter of the pull rod, and the diameter of the inner cavity is larger than the outer diameter of the opening slot.

[0010] A further improvement is that the length of the inner cavity is greater than the length of the pull rod head, and the pull rod head is movably adapted to the inner cavity.

[0011] A further improvement is that a pad is provided at the connection between the anchor rod and the top plate, and a support ring is provided at one end of the sleeve, and the support ring is supported on the pad.

[0012] A further improvement is that the protective chain comprises a nut and a chain, the nut is welded to the sleeve, the chain is connected to the nut, and a hook body for hooking the anchor net is provided on the chain.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model comprises a tension rod through a pull rod and a pull rod head. The pull rod head is used to connect with the anchor rod to be tested. The sleeve is sleeved at the connection. During the anchoring force test, one person holds the sleeve, and the other person installs the jack for pressurized pulling. The entire test operation procedure can be completed by two people, which can save at least one person. The protective chain on the sleeve is hung on the anchor net of the top plate to prevent it from falling off and injuring people, thereby improving safety.

[0015] 2. The pull rod, sleeve and other components of the utility model are simple in shape, easy to process and manufacture, and low in cost.

[0016] 3. The utility model adopts a pneumatic anchor cable tensioning machine and uses the compressed air power of a pneumatic pump to perform a pressure test, which reduces labor intensity, increases pressure quickly, shortens operation time, improves work efficiency, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a schematic diagram of the pull rod, pull rod head and sleeve of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation of the pull rod and the pull rod head of the utility model.

[0020] Among them: 1. Pull rod; 2. Pull rod head; 3. Sleeve; 4. Wire groove; 5. Anchor rod; 6. Top plate; 7. Jack; 8. High-pressure oil pipe; 9. Pneumatic pump; 10. Screw; 11. Inner cavity; 12. Open groove; 13. Pad; 14. Support ring; 15. Nut; 16. Chain. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0022] Embodiment 1

[0023] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a combined detection device for anchoring force of anchor rods, including a pull rod 1, a pull rod head 2, a sleeve 3 and a pneumatic anchor cable tensioning machine, one end of the pull rod 1 is connected to one end of the pull rod head 2, the inner side of the pull rod head 2 is provided with a wire groove 4, the wire groove 4 is used for threaded connection with one end of an anchor rod 5, the anchor rod 5 is anchored on the top plate 6, the sleeve 3 is used for movably sleeved on one end of the outer side of the pull rod 1, and one end of the sleeve 3 is supported on the top plate 6, the sleeve 3 is connected to a protective chain, and the protective chain is hung on the anchor net of the top plate 6; the pull rod 1 is φ20mm*0.5m long, and the pull rod head 2 has a wire groove 4 with a nominal diameter of M22;

[0024] The pneumatic anchor cable tensioning machine includes a jack 7, a high-pressure oil pipe 8 and a pneumatic pump 9. The jack 7 is installed on the outside of the pull rod 1, and the high-pressure oil pipe 8 is connected to the output end of the pneumatic pump 9, and one end of the high-pressure oil pipe 8 is connected to the jack 7. When in use, the pull rod 1 is connected to the pull rod head 2, and one end of the pull rod head 2 is connected to the anchor rod through the thread at the tail end of the anchor rod, and the sleeve 3 is installed. One end of the sleeve 3 protective chain is hung on the top plate 6 anchor net with a hook, and the jack 7 of the anchor cable tensioning machine is installed and pulled to pressurize the anchoring force. After the test is completed, the above components are removed in the reverse order. The jack 7, high-pressure oil pipe 8 and pneumatic pump 9 belong to the application of the prior art.

[0025] A screw 10 is provided at one end of the outer side of the tie rod 1, and the screw 10 is adapted to the thread groove 4. The tie rod 1 is installed and welded to the thread groove 4 of the tie rod head 2 through the screw 10. The thread fixation plus the welding fixation makes the connection between one end of the tie rod 1 and the tie rod head 2 more stable.

[0026] An inner cavity 11 is provided inside the sleeve 3, and an open groove 12 is provided at one end inside the sleeve 3, and the open groove 12 is connected with the inner cavity 11. The caliber of the inner cavity 11 is matched with the outer caliber of the tie rod head 2, and the caliber of the open groove 12 is matched with the outer caliber of the tie rod 1, and the caliber of the inner cavity 11 is larger than the outer caliber of the open groove 12. The length of the inner cavity 11 is larger than the length of the tie rod head 2, and the tie rod head 2 is movably adapted to the inner cavity 11. The tie rod head 2 is movably adapted to the inner cavity 11, and the tie rod 1 is movably adapted to the open groove 12. Since the length of the inner cavity 11 is larger than the length of the tie rod head 2, the tie rod head 2 has a certain moving space inside the inner cavity 11, and will not block a certain displacement when the anchoring force is pulled.

[0027] Embodiment 2

[0028] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a combined detection device for anchoring force of anchor rods, including a pull rod 1, a pull rod head 2, a sleeve 3 and a pneumatic anchor cable tensioning machine, one end of the pull rod 1 is connected to one end of the pull rod head 2, the inner side of the pull rod head 2 is provided with a wire groove 4, the wire groove 4 is used for threaded connection with one end of an anchor rod 5, the anchor rod 5 is anchored on the top plate 6, the sleeve 3 is used for movably sleeved on one end of the outer side of the pull rod 1, and one end of the sleeve 3 is supported on the top plate 6, the sleeve 3 is connected to a protective chain, and the protective chain is hung on the anchor net of the top plate 6; the pull rod 1 is φ20mm*0.5m long, and the pull rod head 2 has a wire groove 4 with a nominal diameter of M22;

[0029] The pneumatic anchor cable tensioning machine includes a jack 7, a high-pressure oil pipe 8 and a pneumatic pump 9. The jack 7 is installed on the outside of the tie rod 1, the high-pressure oil pipe 8 is connected to the output end of the pneumatic pump 9, and one end of the high-pressure oil pipe 8 is connected to the jack 7. When in use, the tie rod 1 is connected to the tie rod head 2, one end of the tie rod head 2 is connected to the anchor rod through the threaded end of the anchor rod, the sleeve 3 is installed, one end of the sleeve 3 protective chain is hung on the top plate 6 anchor net with a hook, the jack 7 of the anchor cable tensioning machine is installed and pulled to test the anchoring force under pressure, and the above components are removed in reverse order after the test is completed.

[0030] A screw 10 is provided at one end of the outer side of the tie rod 1, and the screw 10 is adapted to the thread groove 4. The tie rod 1 is installed and welded to the thread groove 4 of the tie rod head 2 through the screw 10. The thread fixation plus the welding fixation makes the connection between one end of the tie rod 1 and the tie rod head 2 more stable.

[0031] A pad 13 is provided at the connection between the anchor rod 5 and the top plate 6, and a support ring 14 is provided at one end of the sleeve 3, and the support ring 14 is supported on the pad 13 to improve the support stability.

[0032] The protective chain includes a nut 15 and a chain 16, wherein the nut 15 is welded to the sleeve 3, and the chain 16 is connected to the nut 15, and a hook body for hooking the anchor net is provided on the chain 16. The protective chain on the sleeve 3 is hung on the anchor net of the top plate 6 to prevent falling off and injuring people, thereby improving safety.

[0033] The anchor rod anchoring force combination detection device consists of a tension rod 1 and a tension rod head 2. The tension rod head 2 is used to connect with the anchor rod 5 to be tested, and the sleeve 3 is sleeved at the connection. During the anchoring force test operation, one person holds the sleeve 3, and the other person installs the jack 7 for pressurized pulling. The entire test operation procedure can be completed by two people, which can save at least one person. The protective chain on the sleeve 3 is hung on the anchor net of the top plate 6 to prevent it from falling and injuring people, thereby improving safety. The pull rod 1, sleeve 3 and other components of this product are simple in shape, easy to process and manufacture, and low in cost. At the same time, this product adopts a pneumatic anchor cable tensioning machine and uses the compressed air power of a pneumatic pump 9 for pressurized testing, which reduces labor intensity, increases pressurization quickly, shortens operation time, improves work efficiency, and is safe and reliable.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A combined anchor force detection device for anchor rods, comprising a pull rod (1), a pull rod head (2), a sleeve (3) and a pneumatic anchor cable tensioning machine, characterized in that: One end of the pull rod (1) is connected to one end of the pull rod head (2), and a thread groove (4) is provided on the inner side of the pull rod head (2), and the thread groove (4) is used for threaded connection with one end of an anchor rod (5), and the anchor rod (5) is anchored on the top plate (6), and the sleeve (3) is used for movably sleeved on one end of the outer side of the pull rod (1), and one end of the sleeve (3) is supported on the top plate (6), and a protective chain is connected to the sleeve (3), and the protective chain is hung on the anchor net of the top plate (6); The pneumatic anchor cable tensioning machine comprises a jack (7), a high-pressure oil pipe (8) and a pneumatic pump (9), wherein the jack (7) is installed on the outside of the pull rod (1), the high-pressure oil pipe (8) is connected to the output end of the pneumatic pump (9), and one end of the high-pressure oil pipe (8) is connected to the jack (7).

2. The anchor bolt anchoring force combined detection device according to claim 1, characterized in that: A screw (10) is provided at one end of the outer side of the pull rod (1), and the screw (10) is matched with the wire groove (4). The pull rod (1) is installed and fixed by welding with the wire groove (4) of the pull rod head (2) through the screw (10).

3. The anchor bolt anchoring force combined detection device according to claim 1, characterized in that: An inner cavity (11) is provided inside the sleeve (3), and an open groove (12) is provided at one end inside the sleeve (3), wherein the open groove (12) is communicated with the inner cavity (11).

4. The anchor bolt anchoring force combined detection device according to claim 3, characterized in that: The caliber of the inner cavity (11) is matched with the outer caliber of the pull rod head (2), the caliber of the opening groove (12) is matched with the outer caliber of the pull rod (1), and the caliber of the inner cavity (11) is larger than the outer caliber of the opening groove (12).

5. The anchor bolt anchoring force combined detection device according to claim 4, characterized in that: The length of the inner cavity (11) is greater than the length of the pull rod head (2), and the pull rod head (2) is movably adapted to the inner cavity (11).

6. The anchor bolt anchoring force combined detection device according to claim 1, characterized in that: A pad (13) is provided at the connection between the anchor rod (5) and the top plate (6), and a support ring (14) is provided at one end of the sleeve (3), and the support ring (14) is supported on the pad (13).

7. The anchor bolt anchoring force combined detection device according to claim 1, characterized in that: The protective chain comprises a nut (15) and a chain (16); the nut (15) is welded to the sleeve (3); the chain (16) is connected to the nut (15); and a hook body for hooking the anchor net is provided on the chain (16).

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