Simulation anchor rod supporting device for coal mine tunnel roof

Abstract

The utility model discloses a simulated anchor rod supporting device for a coal mine tunnel roof, and relates to the technical field of fixed buildings. A coal mine tunnel roof simulation anchor rod supporting device comprises a model box, five air cylinders and a control box, the control box is connected to the upper surface of the model box in a welded mode, the air cylinder at the upper end is fixedly connected to the upper surface of the model box, a leakage plate is connected to the interior of the model box in a welded mode, and the four air cylinders on the left side and the right side are fixedly connected to the outer surfaces of the left side and the right side of the model box. A pull rod is pulled in a limiting device to move oppositely to drive a first reset spring to contract, meanwhile, the other end of the pull rod is separated from a second pull rod groove, and after the model box loses limiting of the second pull rod groove, the model box can be taken down from the mounting base through a tower crane in a laboratory. In this way, it is avoided that workers spend more time and energy to disassemble the model box, the workload of the workers is effectively reduced, and meanwhile the working efficiency of the workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed buildings, in particular to a simulated anchor rod supporting device for a coal mine tunnel roof. Background Art

[0002] The roof of coal mine tunnels is mostly sedimentary rock strata with complex rock strata combination characteristics, which are prone to roof fall accidents. Roof fall accidents have long accounted for more than 50% of coal mine accidents, posing a great threat to coal mine production safety. The Chinese utility model patent, authorization announcement number "CN206681764U", discloses a coal mine tunnel roof simulation anchor support device, which can effectively solve the simulation problems related to coal mine tunnel roof anchor support. It includes a model box and a fixed frame. The model box is placed on the card position formed by four rectangular iron blocks on the fixed frame and fixed to the fixed frame with bolts and nuts; a 210-ton hydraulic cylinder is designed in the middle position of the upper part of the outer side of the model box, and two 140-ton hydraulic cylinders are arranged on the sides respectively. The hydraulic cylinders are connected to the hydraulic pump through the inlet and return oil lines; the detachable clamping plate is fixed to the model box with bolts and nuts through the bolt holes outside the model box; the upper pressure plate and side pressure plates inside the model box are welded to the piston rod of the hydraulic cylinder.

[0003] The above technical scheme simulates the combined characteristics of the roof rock strata, then installs the clamp on the model box, lays similar simulation materials layer by layer in the model box, uses the tower crane in the laboratory to place the model box in the clamping position composed of four rectangular iron blocks on the fixed frame, and then uses the hydraulic pump to supply oil to the hydraulic cylinder, and the hydraulic cylinder then provides vertical stress and horizontal stress to the similar simulation materials in the model box through the upper pressure plate and the side pressure plate. After the stress reaches the requirement, the stress is kept constant until the end of the experiment. However, the above technical scheme still has certain defects. For example, the above equipment lays similar simulation materials layer by layer in the model box, and then conducts experiments. However, when conducting tunnel roof simulation experiments or maintenance, the staff needs to spend more time and energy to disassemble and assemble the model box, which greatly reduces work efficiency and increases the workload of the staff. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a coal mine tunnel roof simulation anchor support device, which can solve the problem that the equipment lays similar simulation materials layer by layer in a model box and then conducts experiments. However, when conducting tunnel roof simulation experiments or maintenance, the staff needs to spend more time and energy to disassemble and assemble the model box, which greatly reduces work efficiency and increases the workload of the staff.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mine tunnel roof simulation bolt support device, comprising a model box, five cylinders, and a control box, wherein the control box is welded to the upper surface of the model box;

[0006] Wherein, the upper cylinder is fixedly connected to the upper surface of the model box;

[0007] Among them, the internal welding connection of the model box has a leaking plate;

[0008] Among them, the four cylinders on the left and right sides are fixedly connected to the outer surfaces of the left and right sides of the model box;

[0009] The rear end outer surface of the model box is connected with three fixing clamps by bolts;

[0010] Among them, the output ends of the five cylinders are all slidably extended to the inside of the model box;

[0011] Wherein, a support seat is arranged below the model box;

[0012] Wherein, the output end of the upper cylinder is fixedly connected with a pressure plate;

[0013] Among them, the four cylinders on the left and right sides are grouped in two, and the output ends of the two groups of cylinders on the left and right sides are fixedly connected with the same two pressure plates;

[0014] Among them, a limiting device is arranged on the support seat to realize rapid disassembly.

[0015] Preferably, the limiting device comprises two mounting seats, which are fixedly connected to the upper surfaces of the left and right sides of the supporting seat respectively, and the two mounting seats are in a "U" shape;

[0016] Wherein, four second return spring grooves are arranged on the lower surface of the model box.

[0017] Preferably, the insides of the four second return spring grooves are all slidably connected with positioning blocks;

[0018] Wherein, the inner upper surfaces of the two mounting seats are provided with positioning block grooves;

[0019] The outer walls of the protrusions on the left and right sides of the model box are respectively slidably connected to the inside of the corresponding mounting seats.

[0020] Preferably, one end of the four positioning blocks close to the positioning block grooves is in contact with the inner wall of the corresponding positioning block grooves respectively;

[0021] Wherein, the second return springs are arranged inside the four second return spring slots;

[0022] Wherein, two ends of the four second return springs are respectively fixedly connected to one end of the corresponding positioning block and the inner wall of the second return spring groove.

[0023] Preferably, the outer surfaces of the front and rear sides of the two mounting seats are both provided with first pull rod grooves;

[0024] Wherein, the interiors of the four first pull rod grooves are all slidably connected with pull rods;

[0025] Wherein, second pull rod grooves are provided on the front and rear outer surfaces of the left and right side protrusions of the model box.

[0026] Preferably, the outer walls of the four pull rods are sleeved with a first return spring;

[0027] Wherein, the two ends of the four first return springs are respectively fixedly connected to the outer wall of the corresponding pull rod and the left and right outer walls of the mounting seat;

[0028] Wherein, one end of the four pull rods close to the second pull rod grooves is in contact with the inner wall of the corresponding second pull rod grooves respectively.

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] (1) The coal mine tunnel roof simulates the anchor support device. By pulling the pull rod in the limit device in the opposite direction, the first return spring is contracted and the other end of the pull rod is disengaged from the second pull rod groove. After the model box loses the limit of the second pull rod groove, the tower crane in the laboratory can be used to remove the model box from the mounting base. This avoids the staff from spending more time and energy to disassemble the model box, effectively reducing the workload of the staff and improving the work efficiency of the staff.

[0031] (2) The coal mine tunnel roof simulates the anchor support device. Through the leak plate fixedly connected inside the model box, a 50mm round hole is designed to be drilled into the model, and then an anchoring agent is put into the drill hole to simulate the actual anchor support process in the coal mine. On this basis, the stress condition of the anchor inside the rock formation and the failure form of the anchor can be analyzed, and the changes in drilling parameters can be dynamically monitored in real time. The characteristics of the rock formation are reflected by the drilling parameters, and the source of roof collapse in the roof rock formation is discovered, which greatly improves the practicality and effectiveness of the equipment and facilitates the staff to analyze the stress condition of the anchor inside the rock formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0034] Figure 2 It is a schematic diagram of the structure of the exterior of the splint of the utility model;

[0035] Figure 3 This is a schematic diagram of the structure of the exterior of the positioning block of the utility model;

[0036] Figure 4 It is a schematic diagram of the structure of the outer part of the leaking plate of the utility model;

[0037] Figure 5 It is a schematic diagram of the structure of the exterior of the support seat of the utility model.

[0038] Figure numerals: 1. support seat; 2. mounting seat; 3. fixing splint; 4. first pull rod groove; 5. model box; 6. control box; 7. cylinder; 8. leak plate; 9. pressure plate; 10. first return spring; 11. pull rod; 12. positioning block groove; 13. second pull rod groove; 14. positioning block; 15. second return spring; 16. second return spring groove. DETAILED DESCRIPTION

[0039] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0040] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] See also Figure 1-5The utility model provides a technical solution: a coal mine tunnel roof simulation anchor support device, including a model box 5, five cylinders 7, and a control box 6. The control box 6 is welded and connected to the upper surface of the model box 5, and the upper end cylinder 7 is fixedly connected to the upper surface of the model box 5. The inside of the model box 5 is welded and connected with a leak plate 8. The four cylinders 7 on the left and right sides are fixedly connected to the left and right outer surfaces of the model box 5. The rear end outer surface of the model box 5 is connected with three fixed clamping plates 3 by bolts. The output ends of the five cylinders 7 are slidably extended to the inside of the model box 5. A support seat 1 is arranged under the model box 5. The output end of the upper end cylinder 7 is fixedly connected with a pressure plate 9. The four cylinders 7 on the left and right sides are grouped in two, and the output ends of the two groups of cylinders 7 on the left and right sides are fixedly connected with the same two pressure plates 9. A limiting device is arranged on the support seat 1 to realize rapid disassembly.

[0044] Among them, the limiting device includes two mounting seats 2, which are fixedly connected to the upper surfaces of the left and right sides of the support seat 1 respectively, and the two mounting seats 2 are "U"-shaped. Four second return spring grooves 16 are opened on the lower surface of the model box 5.

[0045] Among them, the interiors of the four second return spring grooves 16 are all slidably connected with positioning blocks 14, the inner upper surfaces of the two mounting seats 2 are each provided with positioning block grooves 12, and the outer walls of the protrusions on the left and right sides of the model box 5 are respectively slidably connected with the interiors of the corresponding mounting seats 2.

[0046] Among them, one end of the four positioning blocks 14 close to the positioning block groove 12 is in contact with the inner wall of the corresponding positioning block groove 12 respectively, and the second return spring 15 is arranged inside the four second return spring grooves 16, and the two ends of the four second return springs 15 are fixedly connected with one end of the corresponding positioning block 14 and the inner wall of the second return spring groove 16 respectively.

[0047] Among them, the front and rear outer surfaces of the two mounting seats 2 are both provided with first pull rod grooves 4, and the insides of the four first pull rod grooves 4 are all slidably connected with pull rods 11, and the front and rear outer surfaces of the left and right side protrusions of the model box 5 are both provided with second pull rod grooves 13.

[0048] Among them, the outer walls of the four pull rods 11 are all sleeved with the first return springs 10, and the two ends of the four first return springs 10 are respectively fixedly connected to the outer walls of the corresponding pull rods 11 and the left and right outer walls of the mounting seat 2, and the ends of the four pull rods 11 close to the second pull rod grooves 13 are respectively in contact with the inner walls of the corresponding second pull rod grooves 13.

[0049] Furthermore, when using the device, it is started by connecting an external power supply, first of all, the combination characteristics of the top rock layer to be simulated are understood, similar simulation materials are proportioned according to the combination characteristics of the rock layer, and then similar simulation materials are laid layer by layer in the model box 5, and then the control box 6 is used to control the cylinder 7, so that the cylinder 7 drives the pressure plate 9 to provide vertical stress and horizontal stress to the similar simulation material in the model box 5. After the stress reaches the requirement, the stress is kept constant until the end of the experiment, and then the anchor drill is placed at the bottom of the support seat 1, and the leak plate 8 fixedly connected to the inside of the model box 5 is designed to drill holes into the model with a 50mm round hole. , and then put the anchoring agent into the borehole, and then put the anchor rod in to stir and fix it, so as to simulate the actual anchor support process in the coal mine. On this basis, the stress condition of the anchor rod inside the rock formation and the failure form of the anchor rod can be analyzed, and the changes in drilling parameters can be dynamically monitored in real time. The characteristics of the rock formation can be reflected by the drilling parameters, and the source of roof collapse danger in the top rock formation can be found. Then, when the model box 5 needs to be removed, the pull rod 11 is pulled in the opposite direction to drive the first return spring 10 to contract, and at the same time, the other end of the pull rod 11 is disengaged from the second pull rod groove 13, and then the model box 5 can be removed from the mounting seat 2 by the tower crane in the laboratory.

[0050] By pulling the pull rod 11 in the limit device to move in the opposite direction, the first return spring 10 is driven to contract, and at the same time the other end of the pull rod 11 is disengaged from the second pull rod groove 13. After the model box 5 loses the limit of the second pull rod groove 13, the model box 5 can be removed from the mounting base 2 by the tower crane in the laboratory, thus avoiding the staff from spending more time and energy to disassemble the model box 5, effectively reducing the workload of the staff and improving the work efficiency of the staff. The leak plate 8 fixedly connected to the inside of the model box 5 is a designed 50mm round hole for drilling into the model, and then an anchoring agent is put into the drill hole to simulate the actual anchor support process underground in a coal mine. On this basis, the stress condition of the anchor inside the rock formation and the failure form of the anchor can be analyzed, the changes in drilling parameters can be dynamically monitored in real time, the characteristics of the rock formation can be reflected by the drilling parameters, and the source of roof collapse in the roof rock formation can be discovered, which greatly improves the practicability and effectiveness of the equipment and facilitates the staff to analyze the stress condition of the anchor inside the rock formation.

[0051] Working principle: First, understand the combination characteristics of the top rock layer to be simulated, and mix similar simulation materials according to the combination characteristics of the rock layer. Then, lay similar simulation materials layer by layer in the model box 5. Then, use the control box 6 to control the cylinder 7, so that the cylinder 7 drives the pressure plate 9 to provide vertical stress and horizontal stress to the similar simulation materials in the model box 5. After the stress reaches the requirement, keep the stress constant until the end of the experiment. Then, place the anchor drill at the bottom of the support seat 1, and drill holes into the model through the leak plate 8 fixedly connected to the inside of the model box 5, which is a designed 50mm round hole, and then put the anchor in the hole. The solidifier is then put in and the anchor rod is stirred and fixed to simulate the actual anchor support process in the coal mine. On this basis, the stress condition of the anchor rod inside the rock formation and the failure form of the anchor rod can be analyzed, and the changes in drilling parameters can be dynamically monitored in real time. The characteristics of the rock formation can be reflected by the drilling parameters, and the source of roof collapse danger in the top rock formation can be found. Then, when the model box 5 needs to be removed, the pull rod 11 is pulled in the opposite direction to drive the first return spring 10 to contract, while the other end of the pull rod 11 is disengaged from the second pull rod groove 13, and then the model box 5 can be removed from the mounting base 2 by the tower crane in the laboratory.

[0052] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A coal mine tunnel roof simulation bolt support device, comprising a model box (5), a control box (6) and five cylinders (7), characterized in that: The control box (6) is welded to the upper surface of the model box (5); Wherein, the upper cylinder (7) is fixedly connected to the upper surface of the model box (5); Wherein, a leaking plate (8) is welded inside the model box (5); The four cylinders (7) on the left and right sides are fixedly connected to the outer surfaces of the left and right sides of the model box (5); The rear end outer surface of the model box (5) is connected with three fixing clamping plates (3) by bolts; The output ends of the five cylinders (7) are all slidably extended into the interior of the model box (5); Wherein, a support seat (1) is arranged below the model box (5); Wherein, the output end of the upper cylinder (7) is fixedly connected to a pressure plate (9); The four cylinders (7) on the left and right sides are grouped in pairs, and the output ends of the two groups of cylinders (7) on the left and right sides are fixedly connected to the same two pressure plates (9); Wherein, a limiting device is provided on the support seat (1) to enable rapid disassembly; The limiting device comprises two mounting seats (2), the two mounting seats (2) are respectively fixedly connected to the upper surfaces of the left and right sides of the support seat (1), and the two mounting seats (2) are in a "U" shape; Wherein, four second return spring grooves (16) are provided on the lower surface of the model box (5); Wherein, the interiors of the four second return spring grooves (16) are all slidably connected with positioning blocks (14); Wherein, the inner upper surfaces of the two mounting seats (2) are both provided with positioning block grooves (12); The outer walls of the protrusions on the left and right sides of the model box (5) are respectively slidably connected to the inside of the corresponding mounting seat (2).

2. A coal mine tunnel roof simulated bolt support device according to claim 1, characterized in that: One end of the four positioning blocks (14) close to the positioning block groove (12) is in contact with the inner wall of the corresponding positioning block groove (12); Wherein, a second return spring (15) is disposed inside each of the four second return spring slots (16); The two ends of the four second return springs (15) are respectively fixedly connected to one end of the corresponding positioning block (14) and the inner wall of the second return spring groove (16).

3. A coal mine tunnel roof simulated bolt support device according to claim 2, characterized in that: The outer surfaces of both front and rear sides of the two mounting seats (2) are provided with first pull rod grooves (4); Wherein, the interiors of the four first pull rod grooves (4) are all slidably connected with pull rods (11); Wherein, second pull rod grooves (13) are provided on the front and rear outer surfaces of the left and right side projections of the model box (5).

4. A coal mine tunnel roof simulated bolt support device according to claim 3, characterized in that: The outer walls of the four pull rods (11) are all sleeved with a first return spring (10); Wherein, the two ends of the four first return springs (10) are respectively fixedly connected to the outer wall of the corresponding pull rod (11) and the left and right outer walls of the mounting seat (2); Wherein, one end of the four pull rods (11) close to the second pull rod groove (13) is in contact with the inner wall of the corresponding second pull rod groove (13) respectively.

Images