Supporting device for reducing anchor cable fracture flying

Abstract

The utility model discloses a supporting device capable of reducing anchor cable fracture flying shooting. The supporting device comprises a protection mechanism and an auxiliary fixing mechanism. Wherein the auxiliary fixing mechanism is fixedly connected with the outer surface of a rock body through a connecting plate and a fixing plate, and when the anchor cable is broken, the auxiliary fixing mechanism can resist instant flying force generated by the anchor cable and a limiting plate as much as possible, so that the possibility of flying of the broken anchor cable is reduced; even if the anchor cable is fractured and flies, the auxiliary fixing mechanism cannot completely resist instant flying force, the flying speed can be greatly reduced, and destructive power generated by collision after flying can be effectively reduced. In addition, when the auxiliary fixing mechanism cannot resist instant flying force and takes off, the protection mechanism is provided with an air bag, so that the air bag can buffer collision even if collision occurs in the flying-out process, destructive power caused by collision is effectively reduced, and safety of surrounding personnel is guaranteed.

Description

Technical Field

[0001] The utility model relates to a supporting device for reducing the breakage and flying of an anchor cable, belonging to the technical field of anchor cable anchoring protection. Background Art

[0002] Prestressed anchor cable refers to a cable-shaped bracket that uses prestressing method to anchor the anchor cable inside the rock mass, which is used to reinforce the slope. The anchor cable is anchored into the rock mass through the hole of the weak structural surface of the rock mass by the anchor head, and the sliding body is connected with the stable rock layer by applying prestress to the anchor cable, thereby changing the stress state of the slope rock mass and improving the integrity and strength of the unstable rock mass of the slope.

[0003] A Chinese patent with announcement number CN220469960U discloses a combined anchor cable support device, the key points of its technical solution are: by setting an elastic puller for tightening the pallet, on the one hand, a contact nut is sleeved on the threaded barrel and tightened so that the contact nut is pressed on the pallet, thereby improving the stability of the pallet connection, so that the anchor cable can be connected to the threaded barrel to improve the stability of the support, and on the other hand, when the anchor cable breaks and the pallet and anchor have the risk of being launched outward, the strong spring is stretched to reduce the impact force of the pallet and anchor bursting outward.

[0004] With regard to the above-mentioned and existing related technologies, they still have the following defects: when using anchor cables, the pressure on the anchor cables gradually increases as the construction progresses, and at the same time, the probability of the anchor cables breaking and flying out will gradually increase. It is impossible to protect the broken anchor cables from flying out by relying solely on springs, and once the broken anchor cables are flying out with anchors such as pallets, it is possible that the safety of the workers will be affected during the flying process. Therefore, how to provide a new support device that can reduce the possibility of the broken anchor cables flying out from the anchoring position after the anchor cables break, and even if the flying process occurs, it can greatly reduce the destructive force caused by the collision during the flying process, is a technical problem that the utility model needs to solve. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a support device for reducing the flying of anchor cables, which can reduce the possibility of the broken anchor cables flying away from the anchoring position after the anchor cables break. Even if the flying occurs, the destructive force caused by the collision during the flying process can be greatly reduced, thereby ensuring the safety of the surrounding personnel.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a support device for reducing anchor cable breakage and flying, comprising an anchor cable and a limit plate, wherein a part of the anchor cable is anchored in the rock mass and the other part is outside the rock mass, the limit plate is installed on the anchor cable outside the rock mass, and is used to apply pressure to the outer surface of the rock mass to maintain the prestress of the anchor cable, and also comprises a protective mechanism and two auxiliary fixing mechanisms;

[0007] The two auxiliary fixing mechanisms are symmetrically arranged with the anchor cable as the center, and the auxiliary fixing mechanism includes a support frame and two rotating mechanisms, the support frame includes support plate 1 and support plate 2, support plate 1 is located above support plate 2, and the two are parallel to each other and fixedly connected by a support rod, and the lower part of support plate 2 is fixedly connected to the upper part of the limit plate; the two rotating mechanisms are symmetrically arranged at the two ends of support plate 1; the rotating mechanism includes a rotating rod, a connecting plate and a plug rod, one end of the rotating rod is movably connected to the end of support plate 1, and the other end is movably connected to the connecting plate, so that the connecting plate can adjust its position relative to support plate 1; the plug rod passes through the connecting plate and partially extends into the rock body, and is used to press and fix the connecting plate to the outer surface of the rock body;

[0008] The protective mechanism includes a pad and an airbag. The lower part of the pad is fixedly mounted on the upper part of the two support frames, and the airbag is fixed on the upper part of the pad. The airbag is used to cushion the collision when the anchor cable breaks and flies. Through holes are provided on the pad and the airbag for the anchor cable to pass through.

[0009] Furthermore, the rotating mechanism also includes a fixed plate, a positioning rod and a torsion spring. The fixed plate and the connecting plate are arranged parallel to each other, and one end of the fixed plate is fixedly connected to the side of the connecting plate. The torsion spring is located between the fixed plate and the support plate 1, and its two ends are respectively fixedly connected to the fixed plate and the support plate 1. The positioning rod passes through the fixed plate and partially extends into the rock body, and is used to press and fix the fixed plate to the outer surface of the rock body. By setting the fixed plate and the positioning rod, the fixing performance between the auxiliary fixing mechanism and the rock body can be increased, and the auxiliary fixing mechanism can be reduced from separating and flying out from the outer surface of the rock body when the anchor cable breaks. In addition, the flying force generated by the anchor cable breaking will act on the support frame through the limit plate, and then the support plate 1 is forced to move away from the fixed plate. At this time, the torsion spring is stretched by force, and the instantaneous tension is partially converted into elastic potential energy storage, so that the instantaneous tension transmitted to the fixed plate is reduced, and finally the auxiliary fixing mechanism is reduced from separating and flying out from the outer surface of the rock body.

[0010] Furthermore, two plugs are installed at the bottom of the pad, and mounting seats are provided at the top of the support plates 1 of the two auxiliary fixing mechanisms. The two plugs are respectively inserted into the mounting seats of the two support plates 1 and are locked and fixed by positioning pins. This facilitates the installation, fixing and disassembly between the protective mechanism and the two auxiliary fixing mechanisms.

[0011] Furthermore, the airbag is equipped with a valve core for replenishing gas inside the airbag.

[0012] Furthermore, the second support plate is a U-shaped plate with a mounting hole in the middle and bent edges on both sides, a limiting column is provided on the upper part of the limiting plate, the limiting plate is installed at the lower part of the U-shaped plate, and the limiting column is passed through the mounting hole for limiting, and the bent edge of the U-shaped plate is pressed and fixed to the side of the limiting plate by the limiting pin. This structure facilitates the installation and fixing of the second support plate and the limiting plate, and the connection stability is high.

[0013] Compared with the prior art, the utility model has the following advantages by adding a protective mechanism and two auxiliary fixing mechanisms on the basis of applying pressure to the outer surface of the rock body by the existing anchor cable and the limiting plate to maintain the prestress of the anchor cable:

[0014] 1. The auxiliary fixing mechanism in the utility model is fixedly connected to the outer surface of the rock body through the connecting plate and the fixing plate. When the anchor cable breaks, the auxiliary fixing mechanism can resist the instantaneous flying force generated by the anchor cable and the limiting plate as much as possible, thereby reducing the possibility of the anchor cable breaking and flying. Even if the fixed connection effect between the auxiliary fixing mechanism and the outer surface of the rock body decreases due to changes in the outer surface of the rock body, if the anchor cable breaks and flies, the auxiliary fixing mechanism will not be able to completely resist the instantaneous flying force and will fly together with the anchor cable, but it can greatly reduce the flying speed and effectively reduce the destructive force caused by the collision after the flying.

[0015] 2. When the auxiliary fixing mechanism is unable to withstand the instantaneous flying force generated by the anchor cable and the limiting plate and they fly together, the protective mechanism of the utility model has an airbag. Even if a collision occurs during the flying process, the airbag can cushion the collision, thereby effectively reducing the destructive force caused by the collision, thereby ensuring the safety of surrounding personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 The structural diagram at A in the middle;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the auxiliary fixing mechanism in the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the utility model in another direction;

[0020] Figure 5 for Figure 4 Schematic diagram of the structure at B in the figure.

[0021] In the figure: 1. anchor cable; 2. limit plate; 3. auxiliary fixing mechanism; 31. support frame; 32. rotating rod; 33. connecting plate; 34. plug rod; 35. fixing plate; 36. positioning rod; 37. torsion spring; 38. limit pin; 39. limit column; 4. protection mechanism; 41. plug column; 42. pad; 43. airbag; 44. valve core; 45. positioning pin. DETAILED DESCRIPTION

[0022] The utility model will be further described below.

[0023] like Figure 1and 4 As shown, the utility model comprises an anchor cable 1 and a limit plate 2, wherein a portion of the anchor cable 1 is anchored in the rock mass and the other portion is outside the rock mass, the limit plate 2 is mounted on the anchor cable 1 outside the rock mass, and is used to apply pressure to the outer surface of the rock mass to maintain the prestress of the anchor cable 1, and also comprises a protection mechanism 4 and two auxiliary fixing mechanisms 3;

[0024] The two auxiliary fixing mechanisms 3 are symmetrically arranged with the anchor cable 1 as the center. Figure 3 As shown, the auxiliary fixing mechanism 3 includes a support frame 31 and two rotating mechanisms. The support frame 31 includes a support plate 1 and a support plate 2. The support plate 1 is located above the support plate 2, and the two are parallel to each other and fixedly connected by a support rod. The lower part of the support plate 2 is fixedly connected to the upper part of the limit plate 2; the two rotating mechanisms are symmetrically arranged at both ends of the support plate 1; the rotating mechanism includes a rotating rod 32, a connecting plate 33 and a plug rod 34, one end of the rotating rod 32 is movably connected to the end of the support plate 1, and the other end is movably connected to the connecting plate 33, so that the connecting plate 33 can adjust its position relative to the support plate 1; the plug rod 34 passes through the connecting plate 33 and partially extends into the rock body, and is used to press and fix the connecting plate 33 on the outer surface of the rock body;

[0025] The protection mechanism includes a pad 42 and an air bag 43. The lower part of the pad 42 is fixedly mounted on the upper part of the two support frames 31. Figure 5 As shown, two plugs 41 are installed at the bottom of the pad 42, and mounting seats are provided at the top of the support plates 1 of the two auxiliary fixing mechanisms. The two plugs 41 are respectively inserted into the mounting seats of the two support plates 1 and locked and fixed by positioning pins 45. This facilitates the installation, fixing and disassembly between the protection mechanism 4 and the two auxiliary fixing mechanisms 3; the airbag 43 is fixed on the top of the pad 42 and partially wraps the pad 42 and the two auxiliary fixing mechanisms 3, which is used to buffer the collision through the airbag 43 when the anchor cable 1 breaks and flies; through holes are provided on the pad 42 and the airbag 43 for the anchor cable 1 to pass through; the airbag 43 is equipped with a valve core 44 for replenishing gas inside the airbag 43.

[0026] As an improvement of the utility model, Figure 2 and 3As shown, the rotating mechanism also includes a fixing plate 35, a positioning rod 36 and a torsion spring 37. The fixing plate 35 and the connecting plate 33 are arranged parallel to each other, and one end of the fixing plate 35 is fixedly connected to the side of the connecting plate 33; the torsion spring 37 is between the fixing plate 35 and the supporting plate 1, and its two ends are respectively fixedly connected to the fixing plate 35 and the supporting plate 1, and the positioning rod 36 passes through the fixing plate 35 and partially extends into the rock body, which is used to press and fix the fixing plate 35 on the outer surface of the rock body. By setting the fixing plate 35 and the positioning rod 36, the fixing performance between the auxiliary fixing mechanism 3 and the rock body can be increased, and when the anchor cable 1 breaks, the auxiliary fixing mechanism 3 can be reduced from separating and flying out from the outer surface of the rock body; in addition, the flying force generated by the breaking of the anchor cable 1 will act on the support frame 31 through the limiting plate 2, and then the supporting plate 1 is forced to move away from the fixing plate 35. At this time, the torsion spring 37 is stretched by force, and the instantaneous tension is partially converted into elastic potential energy storage, so that the instantaneous tension transmitted to the fixing plate 35 is reduced, and finally the auxiliary fixing mechanism 3 is reduced from separating and flying out from the outer surface of the rock body.

[0027] As another improvement of the utility model, the support plate 2 is a U-shaped plate with a mounting hole in the middle and bent edges on both sides, and a limiting column 39 is provided on the upper part of the limiting plate 2. The limiting plate 2 is installed at the lower part of the U-shaped plate, and the limiting column 39 is passed through the mounting hole for limiting, and the bent edge of the U-shaped plate is pressed and fixed to the side of the limiting plate 2 by the limiting pin 38. This structure facilitates the installation and fixing of the support plate 2 and the limiting plate 2, and the connection stability is high.

[0028] During operation, after the anchor cable 1 and the limit plate 2 are installed in the rock mass and prestressed and tightened, the support plate 2 of the support frame 31 is connected to the limit plate 2, and then the rotating rod 32 is pushed to adjust the position of the connecting plate 33. Since the rotating rod 32 is movably connected to the support plate 1 and the connecting plate 33, the position can be easily adjusted, and finally the connecting plate 33 and the fixing plate 35 are fitted to the outer surface of the rock mass. Then the insertion rod 34 and the positioning rod 36 are respectively passed through the connecting plate 33 and the fixing plate 35 and partially extended into the rock mass to press and fix the connecting plate 33 and the fixing plate 35 to the outer surface of the rock mass. The installation of the entire device is completed.

[0029] When the anchor cable 1 breaks due to changes in internal stress during anchoring, since it is in a tensioned state, the broken anchor cable will apply an instantaneous flying force to the limit plate 2 and move the limit plate 2 to the outside of the rock mass, thereby driving the support frame 31 to move as a whole. At this time, since the connecting plate 33 and the fixing plate 35 are both fixed to the outer surface of the rock mass, the support frame 31 drives the rotating rod 32 to rotate during the movement, increasing the distance between the supporting plate 1 and the fixing plate 35, thereby stretching the torsion spring 37, converting the instantaneous tension part into elastic potential energy storage, thereby reducing the instantaneous tension transmitted to the fixing plate 35, and the fixing plate 35 and the connecting plate 33 are both fixed to the outside of the rock mass. surface, and finally reduce the auxiliary fixing mechanism 3 from detaching from the outer surface of the rock body and flying out, so as to reduce the situation of the anchor cable 1 breaking and flying out; in addition, if the anchor cable 1 breaks, due to the change of the outer surface of the rock body, the fixing effect between the fixing plate 35 and the connecting plate 33 and the outer surface of the rock body is reduced. At this time, the breakage of the anchor cable 1 may cause the entire device to fly out from the outer surface of the rock body, but the process of the auxiliary fixing mechanism 3 can greatly reduce the flying speed, and due to the airbag 43 of the protective mechanism 4, even if a collision occurs during the flying process, the airbag 43 can cushion the collision, thereby effectively reducing the destructive force caused by the collision, thereby ensuring the safety of the surrounding personnel.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A support device for reducing anchor cable breakage and flying, comprising an anchor cable and a limit plate, wherein a portion of the anchor cable is anchored in the rock mass and the other portion is outside the rock mass, and the limit plate is mounted on the anchor cable outside the rock mass, and is used to apply pressure to the outer surface of the rock mass to maintain the prestress of the anchor cable, and is characterized in that: It also includes a protection mechanism and two auxiliary fixing mechanisms; The two auxiliary fixing mechanisms are symmetrically arranged with the anchor cable as the center, and the auxiliary fixing mechanism includes a support frame and two rotating mechanisms, the support frame includes support plate 1 and support plate 2, support plate 1 is located above support plate 2, and the two are parallel to each other and fixedly connected by a support rod, and the lower part of support plate 2 is fixedly connected to the upper part of the limit plate; the two rotating mechanisms are symmetrically arranged at the two ends of support plate 1; the rotating mechanism includes a rotating rod, a connecting plate and a plug rod, one end of the rotating rod is movably connected to the end of support plate 1, and the other end is movably connected to the connecting plate, so that the connecting plate can adjust its position relative to support plate 1; the plug rod passes through the connecting plate and partially extends into the rock body, and is used to press and fix the connecting plate to the outer surface of the rock body; The protective mechanism includes a pad and an airbag. The lower part of the pad is fixedly mounted on the upper part of the two support frames, and the airbag is fixed on the upper part of the pad. The airbag is used to cushion the collision when the anchor cable breaks and flies. Through holes are provided on the pad and the airbag for the anchor cable to pass through.

2. The support device for reducing anchor cable breakage and flying according to claim 1 is characterized in that: The rotating mechanism also includes a fixed plate, a positioning rod and a torsion spring. The fixed plate and the connecting plate are arranged parallel to each other, and one end of the fixed plate is fixedly connected to the side of the connecting plate. The torsion spring is located between the fixed plate and the supporting plate, and its two ends are respectively fixedly connected to the fixed plate and the supporting plate. The positioning rod passes through the fixed plate and partially extends into the rock body, and is used to press and fix the fixed plate to the outer surface of the rock body.

3. The support device for reducing anchor cable breakage and flying according to claim 1 is characterized in that: Two plug posts are arranged at the bottom of the pad, and mounting seats are arranged at the top of the support plates 1 of the two auxiliary fixing mechanisms. The two plug posts are respectively inserted into the mounting seats of the two support plates 1 and are locked and fixed by positioning pins.

4. The support device for reducing anchor cable breakage and flying according to claim 1 is characterized in that: The airbag is equipped with a valve core for replenishing gas inside the airbag.

5. The support device for reducing anchor cable breakage and flying according to claim 1 is characterized in that: The second support plate is a U-shaped plate with a mounting hole in the middle and bent edges on both sides. A limiting column is provided on the upper part of the limiting plate. The limiting plate is installed at the lower part of the U-shaped plate, and the limiting column passes through the mounting hole for limiting. The bent edge of the U-shaped plate is pressed and fixed to the side of the limiting plate by a limiting pin.

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