Coal mine tunnel supporting structure

Abstract

The utility model discloses a coal mine tunnel supporting structure which comprises an arc-shaped supporting plate and side supporting plates installed on the two sides of the arc-shaped supporting plate, the surfaces of the bottoms of the two sides of the arc-shaped supporting plate are both connected with magnetic attraction limiting components, one sides of the two side supporting plates are both provided with guide cylinders, and the tops of the guide cylinders are connected with the bottoms of the magnetic attraction limiting components. And the inner space of the guide cylinder communicates with the inner space of the magnetic attraction limiting part, and the bottom of the guide cylinder is sleeved with an adjusting supporting rod, a limiting part and a second spring. The adjusting supporting rod can be contracted into the guide cylinder until one end of the adjusting supporting rod makes contact with the magnetic attraction face of the electromagnet in the magnetic attraction limiting component, and the electromagnet is started to conduct magnetic attraction limiting on the adjusting supporting rod. Therefore, the bottom of the side supporting plate has enough space for passing of equipment, and large-area supporting of the roadway is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine tunnel protection, and in particular relates to a coal mine tunnel supporting structure. Background Art

[0002] At present, in terms of the protection of coal mine tunnels, researchers in related fields have disclosed a variety of support structures. For example, the authorized patent with the announcement number CN217841688U and the subject name is "A support structure for coal mine tunnels". It proposes "the support structure for coal mine tunnels, by pulling the base, the connecting rod moves in the bottom plate, and the base moves to both sides, thereby increasing the width of the device to meet the needs of coal mine tunnels of different widths and increasing the practicality of the device. The protective plate is pulled again, and the movable rod moves on the protective plate to increase the height of the device to meet the needs of coal mine tunnels of different heights; the support structure for coal mine tunnels, by moving the lifting rod upward, drives the arc-shaped top plate to separate from the protective plate and move upward to meet the needs of coal mine tunnels of different curvatures. The top nails set on the arc-shaped top plate are inserted into the coal mine tunnel to prevent the arc-shaped top plate from loosening."

[0003] From the technical effects obtained after using the existing technology, the existing technology has increased the supporting effect on the coal mine tunnel by increasing the superposition of the structure and the movable design, but there is also a very obvious defect, that is, it occupies more space in the coal mine tunnel. When large equipment needs to be moved, it is easy to cause the problem of inconvenience in movement due to structural interference. Secondly, the protective function is single, and the complex structure can only achieve the supporting effect, and the cost of use is not proportional to the benefit. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a coal mine tunnel support structure, which solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a coal mine tunnel support structure, comprising an arc-shaped support plate, and side support plates installed on both sides of the arc-shaped support plate, the surfaces of the bottoms of both sides of the arc-shaped support plate are connected with magnetic limit components, one side of the two side support plates is installed with a guide cylinder, the top of the guide cylinder is connected to the bottom of the magnetic limit component, and the internal space of the guide cylinder is connected to the internal space of the magnetic limit component;

[0006] The bottom of the guide cylinder is equipped with an adjusting support rod, a limiting component, and a second spring. One end of the adjusting support rod can be retracted into the interior of the guide cylinder and protrude into the interior of the magnetic limiting component. The middle part of the adjusting support rod is provided with a limiting ring groove that is clamped with one end of the limiting component. The two ends of the second spring are respectively connected to the top surface of the adjusting support rod and the inner wall of the top of the guide cylinder.

[0007] Furthermore, the magnetic limiting component includes an outer protective box and an electromagnet mounted inside the outer protective box, the outer protective box is fixedly connected to the surface of the corresponding side of the bottom of the arc-shaped support plate, the electromagnet and the adjustment support rod and the guide cylinder are all in an inclined state, and one end of the adjustment support rod is retracted to the inside of the guide cylinder and protrudes into the magnetic surface of the electromagnet inside the magnetic limiting component to be magnetically connected.

[0008] Furthermore, the limiting component includes a first T-shaped rod and a first spring, one end of the first T-shaped rod is clamped in the bottom structure of the guide cylinder, the two ends of the first spring are respectively fixedly connected to the surface of the other end of the first T-shaped rod and the surface of the bottom of the guide cylinder, and one end of the first T-shaped rod is clamped in the limiting ring groove.

[0009] Furthermore, screws are used to install and fix the two sides of the bottom of the arc-shaped supporting plate to the top structures of the two side supporting plates, and mounting holes are provided at the bottoms of the two side supporting plates.

[0010] Furthermore, pressure-sensitive detection components are installed inside both sides of the arc-shaped supporting plate. The pressure-sensitive detection components are composed of a support sleeve and a pressure sensor installed in the support sleeve, a second T-shaped rod, and a third spring. One end of the second T-shaped rod passes through the support sleeve and the arc-shaped supporting plate in sequence, and the other end of the second T-shaped rod is fitted and connected to the pressure-sensitive surface of the pressure sensor. The two ends of the third spring are respectively connected to the surface of the other end of the pressure sensor and the inner wall of the top of the support sleeve.

[0011] Furthermore, the inner wall of the middle part of the arc-shaped supporting plate is connected with a plurality of adjusting rods, and the bottoms of the plurality of adjusting rods are each provided with a protective rod.

[0012] Furthermore, the adjusting rod includes a fixed sleeve, a third T-shaped rod, and a fourth spring. The top of the fixed sleeve is fixedly connected to the inner wall of the middle part of the arc-shaped support plate, one end of the third T-shaped rod is clamped on the inner side of the bottom of the fixed sleeve, and the two ends of the fourth spring are respectively connected to the surface of one end of the third T-shaped rod and the inner wall of the bottom of the fixed sleeve.

[0013] Furthermore, the other end of the third T-shaped rod is in a ring structure and is clamped with one end of the protection rod, and the protection rod is made of elastic material. Beneficial Effects

[0014] 1. The adjustable support rod provided in the utility model can be retracted to the inside of the guide cylinder until one end of the adjustable support rod contacts the magnetic surface of the electromagnet in the magnetic limiting component, and the electromagnet is started to magnetically limit the adjustable support rod, thereby ensuring that there is enough space at the bottom of the side support plate for the equipment to pass through while ensuring support for a large area of ​​the laneway.

[0015] 2. In the process of supporting the tunnel by the side support plates, arc-shaped support plates, guide cylinders and adjustable support rods, the multiple protection rods are then mounted on the corresponding multiple adjustable rods to form a mesh protection structure on the top of the tunnel to protect users and avoid falling rocks and injuries in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 2 It is a front view schematic diagram of the utility model;

[0018] Figure 3 It is a top view schematic diagram of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the limiting component of the utility model;

[0020] Figure 5 It is a cross-sectional schematic diagram of the adjusting rod of the utility model;

[0021] Figure 6 For this utility model Figure 1 A magnified schematic diagram of center A.

[0022] In the figure: 1. arc-shaped support plate; 2. side support plate; 3. guide cylinder; 4. adjustment support rod; 5. limit component; 51. first T-bar; 52. first spring; 6. magnetic limit component; 7. second spring; 8. pressure detection component; 81. pressure sensor; 82. second T-bar; 83. third spring; 9. adjustment rod; 91. fixing sleeve; 92. third T-bar; 93. fourth spring; 10. protection rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 A coal mine tunnel support structure, comprising an arc-shaped support plate 1, side support plates 2 installed on both sides of the arc-shaped support plate 1, the surfaces of the bottoms of both sides of the arc-shaped support plate 1 are connected with magnetic limit components 6, one side of the two side support plates 2 is installed with a guide cylinder 3, the top of the guide cylinder 3 is connected to the bottom of the magnetic limit component 6, and the internal space of the guide cylinder 3 is connected to the internal space of the magnetic limit component 6;

[0025] The two sides of the bottom of the arc-shaped support plate 1 and the top structure of the two side support plates 2 are fixed with screws, and the bottoms of the two side support plates 2 are provided with mounting holes;

[0026] The magnetic limiting component 6 includes an outer protection box and an electromagnet set in the outer protection box. The outer protection box is fixedly connected to the surface of the corresponding side of the bottom of the arc-shaped support plate 1. The electromagnet, the adjustment support rod 4, and the guide cylinder 3 are all in an inclined state, and one end of the adjustment support rod 4 is retracted to the inside of the guide cylinder 3 and protrudes into the magnetic surface of the electromagnet inside the magnetic limiting component 6 for magnetic connection;

[0027] The bottom of the guide cylinder 3 is provided with an adjusting support rod 4, a limiting component 5, and a second spring 7. One end of the adjusting support rod 4 can be retracted into the inside of the guide cylinder 3 and protrude into the inside of the magnetic limiting component 6. A limiting ring groove is provided in the middle of the adjusting support rod 4 to be clamped with one end of the limiting component 5. The two ends of the second spring 7 are respectively connected to the top surface of the adjusting support rod 4 and the inner wall of the top of the guide cylinder 3.

[0028] The limiting component 5 includes a first T-shaped rod 51 and a first spring 52. One end of the first T-shaped rod 51 is inserted through and clamped in the bottom structure of the guide cylinder 3. Two ends of the first spring 52 are respectively fixedly connected to the surface of the other end of the first T-shaped rod 51 and the surface of the bottom of the guide cylinder 3. One end of the first T-shaped rod 51 is clamped in the limiting ring groove.

[0029] The inside of both sides of the arc-shaped support plate 1 is equipped with a pressure-sensing detection component 8, which is composed of a support sleeve and a pressure sensor 81, a second T-shaped rod 82, and a third spring 83. One end of the second T-shaped rod 82 passes through the support sleeve and the arc-shaped support plate 1 in sequence, and the other end of the second T-shaped rod 82 is connected to the pressure-sensing surface of the pressure sensor 81. The two ends of the third spring 83 are respectively connected to the surface of the other end of the pressure sensor 81 and the inner wall of the top of the support sleeve;

[0030] A plurality of adjusting rods 9 are connected to the inner wall in the middle of the arc-shaped supporting plate 1, and a protective rod 10 is mounted on the bottom of each of the adjusting rods 9. The adjusting rod 9 comprises a fixed sleeve 91, a third T-shaped rod 92, and a fourth spring 93. The top of the fixed sleeve 91 is fixedly connected to the inner wall in the middle of the arc-shaped supporting plate 1, and one end of the third T-shaped rod 92 is clamped on the inner side of the bottom of the fixed sleeve 91. The two ends of the fourth spring 93 are respectively connected to the surface of one end of the third T-shaped rod 92 and the inner wall of the bottom of the fixed sleeve 91. The other end of the third T-shaped rod 92 is in an annular structure and is clamped with one end of the protective rod 10. The protective rod 10 is made of elastic material.

[0031] Working principle: Embodiment 1

[0032] When it is necessary to move large equipment in the tunnel, stretch the first T-bar 51 to make way, and retract the adjusting support rod 4 into the inside of the guide cylinder 3 until one end of the adjusting support rod 4 contacts the magnetic surface of the electromagnet, and start the electromagnet to magnetically limit the adjusting support rod 4, thereby ensuring that there is enough space at the bottom of the side support plate 2 for the equipment to pass through while ensuring support for a large area of ​​the tunnel. Embodiment 2

[0033] When it is necessary to move large equipment in the tunnel, the first T-shaped rod 51 is stretched to make way, and the adjusting support rod 4 is retracted into the inside of the guide cylinder 3 until one end of the adjusting support rod 4 contacts the magnetic surface of the electromagnet, and the electromagnet is started to magnetically limit the adjusting support rod 4, thereby ensuring that there is enough space at the bottom of the side support plate 2 for the equipment to pass through while ensuring support for a large area of ​​the tunnel;

[0034] While the side support plates 2, the arc-shaped support plates 1, the guide cylinders 3, and the adjustable support rods 4 support the tunnel, the pressure applied by the tunnel and the overall device can be monitored by the provided pressure-sensitive detection component 8. If the pressure exceeds the maximum value, a timely warning can be issued. Embodiment 3

[0035] When it is necessary to move large equipment in the tunnel, the first T-shaped rod 51 is stretched to make way, and the adjusting support rod 4 is retracted into the inside of the guide cylinder 3 until one end of the adjusting support rod 4 contacts the magnetic surface of the electromagnet, and the electromagnet is started to magnetically limit the adjusting support rod 4, thereby ensuring that there is enough space at the bottom of the side support plate 2 for the equipment to pass through while ensuring support for a large area of ​​the tunnel;

[0036] In the process of supporting the tunnel by the side support plate 2, the arc support plate 1, the guide cylinder 3, and the adjustable support rod 4, in order to avoid falling rocks and injuring people in the tunnel, a plurality of protection rods 10 are mounted on the corresponding plurality of adjustment rods 9, and then a mesh protection structure is formed on the top of the tunnel to protect users.

Claims

1. A coal mine tunnel support structure, comprising an arc-shaped support plate (1) and side support plates (2) installed on both sides of the arc-shaped support plate (1), characterized in that: The surfaces of the bottoms of both sides of the arc-shaped support plate (1) are connected to magnetic stopper components (6), one side of each of the two side support plates (2) is provided with a guide cylinder (3), the top of the guide cylinder (3) is connected to the bottom of the magnetic stopper component (6), and the internal space of the guide cylinder (3) is in communication with the internal space of the magnetic stopper component (6); The bottom of the guide cylinder (3) is provided with an adjusting support rod (4), a limiting component (5), and a second spring (7); one end of the adjusting support rod (4) can be retracted into the interior of the guide cylinder (3) and protrude into the interior of the magnetic limiting component (6); a limiting ring groove is provided in the middle of the adjusting support rod (4) and is engaged with one end of the limiting component (5); and two ends of the second spring (7) are respectively connected to the top surface of the adjusting support rod (4) and the inner wall of the top of the guide cylinder (3).

2. A coal mine tunnel support structure according to claim 1, characterized in that: The magnetic limiting component (6) comprises an outer protective box and an electromagnet mounted inside the outer protective box, the outer protective box being fixedly connected to the surface of the corresponding side edge of the bottom of the arc-shaped support plate (1), the electromagnet and the adjustment support rod (4) and the guide cylinder (3) are all in an inclined state, and one end of the adjustment support rod (4) is retracted into the interior of the guide cylinder (3) and protrudes into the magnetic surface of the electromagnet inside the magnetic limiting component (6) to be magnetically connected.

3. A coal mine tunnel support structure according to claim 1, characterized in that: The limiting component (5) comprises a first T-shaped rod (51) and a first spring (52); one end of the first T-shaped rod (51) is inserted through and clamped in the bottom structure of the guide cylinder (3); two ends of the first spring (52) are respectively fixedly connected to the surface of the other end of the first T-shaped rod (51) and the surface of the bottom of the guide cylinder (3); one end of the first T-shaped rod (51) is clamped in the limiting ring groove.

4. A coal mine tunnel support structure according to claim 1, characterized in that: The two sides of the bottom of the arc-shaped support plate (1) are fixed to the top structures of the two side support plates (2) by means of screws, and the bottoms of the two side support plates (2) are both provided with mounting holes.

5. A coal mine tunnel support structure according to claim 1, characterized in that: Pressure sensing detection components (8) are mounted inside both sides of the arc-shaped support plate (1). The pressure sensing detection components (8) are composed of a support sleeve, a pressure sensor (81) mounted inside the support sleeve, a second T-shaped rod (82), and a third spring (83). One end of the second T-shaped rod (82) passes through the support sleeve and the arc-shaped support plate (1) in sequence, and the other end of the second T-shaped rod (82) is fitted and connected to the pressure sensing surface of the pressure sensor (81). The two ends of the third spring (83) are respectively connected to the surface of the other end of the pressure sensor (81) and the inner wall of the top of the support sleeve.

6. A coal mine tunnel support structure according to claim 1, characterized in that: The inner wall of the middle part of the arc-shaped support plate (1) is connected to a plurality of adjustment rods (9), and the bottoms of the plurality of adjustment rods (9) are each provided with a protective rod (10).

7. A coal mine tunnel support structure according to claim 6, characterized in that: The adjusting rod (9) comprises a fixed sleeve (91), a third T-shaped rod (92), and a fourth spring (93); the top of the fixed sleeve (91) is fixedly connected to the inner wall of the middle part of the arc-shaped supporting plate (1); one end of the third T-shaped rod (92) is clamped on the inner side of the bottom of the fixed sleeve (91); and the two ends of the fourth spring (93) are respectively connected to the surface of one end of the third T-shaped rod (92) and the inner wall of the bottom of the fixed sleeve (91).

8. A coal mine tunnel support structure according to claim 7, characterized in that: The other end of the third T-shaped rod (92) is in a ring-shaped structure and is clamped with one end of the protection rod (10); the protection rod (10) is made of elastic material.

Images