Underground supporting device

Abstract

The underground supporting device comprises an arc-shaped shell frame and a supporting frame installed on the arc-shaped shell frame, the arc-shaped shell frame comprises an arch-shaped supporting frame and a buffering frame, the underground supporting device further comprises an alarm device, at least one switching device and a triggering assembly used for triggering the switching device, and the alarm device is electrically connected with the switching device. The switch device is installed on the outer surface of the arch-shaped supporting frame, the trigger assembly is installed on the inner surface of the buffer frame, when collapse occurs, the supporting frame is pushed to extrude the buffer frame towards the arch-shaped supporting frame, the trigger assembly triggers the switch device, and therefore an alarm is given out to remind workers in the tunnel of the evacuation direction. Supporting and collapse early warning of an underground roadway are achieved, the switch device and the trigger assembly are arranged in the underground supporting device, a larger space is formed below the supporting device, large equipment can smoothly pass through the supporting device, only MA anti-explosion performance of the external supporting frame and the arc-shaped shell frame needs to be considered, and cost is lower.

Description

Technical Field

[0001] The present application relates to the technical field of coal mining, and in particular to an underground support device. Background Art

[0002] When mining in coal mines, tunnels need to be dug for workers to walk and machines to pass. In order to ensure the production safety of underground tunnels, underground support devices are used to support the tunnels.

[0003] In the prior art, a test plate is generally set on the inner wall of the top plate of the support device, with a laser lamp and a test hole fixedly connected on one side of the inner wall, and a detection device set on the other side. When the support device is deformed, the laser beam cannot reach the detection device, and an alarm signal is issued. However, the test plate of this underground support device will occupy part of the internal space of the tunnel, and the explosion-proof MA performance of the laser lamp and detection device on the outer layer of the support device must be considered additionally, which is costly. When large machinery passes through the underground support device, the test plate is likely to affect the normal passage of large machinery. Utility Model Content

[0004] The purpose of this application is to overcome the problems in the prior art of large floor space, high explosion-proof cost, and impact on the passage of large equipment, and to provide an underground support device that can detect deformation of the tunnel more promptly and can promptly issue an alarm to technical personnel after deformation.

[0005] The technical solution of the present application provides a downhole support device, the downhole support device comprises an arc-shaped shell frame and a support frame mounted on the arc-shaped shell frame, the arc-shaped shell frame comprises an arched support frame and a buffer frame, the buffer frame is mounted on the outer surface of the arched support frame, and the support frame is mounted on the outer surface of the buffer frame;

[0006] The arc-shaped housing frame further comprises an alarm device, at least one switch device and at least one trigger assembly for triggering the switch device, the alarm device is electrically connected to the switch device, the switch device is mounted on the outer surface of the arch support frame, and the trigger assembly is mounted on the inner surface of the buffer frame;

[0007] When collapse occurs, the support frame is pushed to squeeze the buffer frame toward the arch support frame, and the trigger component triggers the switch device.

[0008] Further, the trigger assembly includes a trigger rod;

[0009] The trigger rod is installed on the inner surface of the buffer frame. When the buffer frame is pressed toward the arch support frame, the trigger rod is pressed toward the switch device until the trigger rod presses the switch device and the switch device is triggered.

[0010] Further, the trigger rod includes a push rod, a first elastic member and a movable member;

[0011] The push rod is installed on the inner surface of the buffer frame, the surface of the push rod is connected to one end of the first elastic member, and the other end of the first elastic member is connected to the movable member.

[0012] Furthermore, the trigger rod also includes at least two first limiters evenly arranged on the side of the movable part, a slide groove is formed between the at least two first limiters, the first elastic part is installed in the slide groove, and a slider slidably installed in the slide groove is provided on the outer side of the movable part.

[0013] Furthermore, a plurality of second elastic members are provided on the inner surface of the buffer frame, one end of the second elastic member abuts against the buffer frame, and the other end abuts against the arch support frame.

[0014] Furthermore, the arc-shaped shell frame also includes two outer support frames, which are respectively installed on the front and rear surfaces of the arch support frame, and an installation space is formed between the two outer support frames and the buffer frame, and the support frame is located in the installation space.

[0015] Further, the outer support frame includes a support plate and an isolation plate;

[0016] The two support plates are respectively located on the front and rear sides of the support frame, and the isolation plate is further provided between each support plate and the support frame;

[0017] A plurality of third elastic members are disposed on a surface of the isolation plate facing the support plate.

[0018] Furthermore, at least one first fixing member is provided on one side of the isolation plate facing the support plate, and at least one first embedding member that embeds with the first fixing member is provided on one side of the support plate facing the isolation plate;

[0019] The inner surface of the buffer frame is further provided with at least one second fixing member, and the outer side surface of the arch support frame is further provided with at least one second engaging member engaged with the second fixing member.

[0020] Furthermore, the buffer frame includes a plurality of buffer plates, all of which are mounted on the outer surface of the arch support frame, and the support frame is mounted on the outer surface of the buffer plate.

[0021] Furthermore, two first fixing frames are installed at the bottom of the arc-shaped frame, and each of the first fixing frames is also provided with at least one expansion bolt;

[0022] Two second fixing frames are installed at the bottom of the support frame. The second fixing frames are installed below the first fixing frame. Each of the second fixing frames is also provided with at least one hole corresponding to the expansion bolt.

[0023] After adopting the above technical solution, the following beneficial effects are achieved:

[0024] The underground support device of the present application includes an arc-shaped shell frame and a support frame installed on the arc-shaped shell frame. The arc-shaped shell frame includes an arched support frame and a buffer frame, and also includes an alarm device, at least one switch device and a trigger assembly for triggering the switch device. The alarm device is electrically connected to the switch device. The switch device is installed on the outer surface of the arched support frame, and the trigger assembly is installed on the inner surface of the buffer frame. When collapse occurs, the support frame is pushed to squeeze the buffer frame toward the arched support frame, and the trigger assembly triggers the switch device, thereby sounding an alarm to remind the workers in the tunnel to evacuate. The support and collapse warning of the underground tunnel are realized, and the switch device and the trigger assembly are arranged inside the underground support device, so that there is a larger space under the support device, and large equipment can pass smoothly. Only the MA explosion-proof performance of the external support frame and the arc-shaped shell frame needs to be considered, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The disclosure of the present application will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of a downhole support device in one embodiment of the present application;

[0027] Figure 2 is a three-dimensional assembly diagram of a downhole support device in one embodiment of the present application;

[0028] Figure 3 is a schematic diagram of the structure of a trigger assembly and a switch device in one embodiment of the present application;

[0029] Figure 4 is a schematic diagram of the side structure of the trigger assembly and the switch device before being triggered in one embodiment of the present application;

[0030] Figure 5 is a schematic diagram of the side structure of the trigger assembly and the switch device after being triggered in one embodiment of the present application;

[0031] Figure 6 It is a partial structural schematic diagram of a downhole support device in one embodiment of the present application.

[0032] Reference table of reference numerals:

[0033] Arc frame 1: arch support frame 11, buffer frame 12, buffer plate 120, second fixing member 121, alarm device 13, switch device 14, trigger assembly 15, second elastic member 16, outer support frame 17, support plate 171, isolation plate 172, first fixing member 173, third elastic member 18, first fixing frame 19, expansion bolt 190;

[0034] The trigger rod 151 includes a top rod 1510 , a first elastic member 1511 , a movable member 1512 , a first stopper 1513 , and a sliding block 1514 ;

[0035] Support frame 2: second fixed frame 21. DETAILED DESCRIPTION

[0036] The specific implementation of the present application is further described below with reference to the accompanying drawings.

[0037] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the application.

[0038] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above-mentioned in this application can be understood according to the specific circumstances.

[0040] like Figure 1-3 As shown, a downhole support device in an embodiment of the present application includes an arc-shaped shell frame 1 and a support frame 2 installed on the arc-shaped shell frame 1, the arc-shaped shell frame 1 includes an arched support frame 11 and a buffer frame 12, the buffer frame 12 is installed on the outer surface of the arched support frame 11, and the support frame 2 is installed on the outer surface of the buffer frame 12;

[0041] The arc-shaped housing frame 1 further includes an alarm device 13, at least one switch device 14 and at least one trigger assembly 15 for triggering the switch device 14, the alarm device 13 is electrically connected to the switch device 14, the switch device 14 is mounted on the outer surface of the arch support frame 11, and the trigger assembly 15 is mounted on the inner surface of the buffer frame 12;

[0042] When collapse occurs, the support frame 2 is pushed to press the buffer frame 12 toward the arch support frame 11 , and the trigger assembly 15 triggers the switch device 14 .

[0043] In this embodiment, a support frame 2 is installed on the arc-shaped shell frame 1, wherein the arc-shaped shell frame 1 also includes an arched support frame 11 and a buffer frame 12, the buffer frame 12 is arranged on the outer surface of the arched support frame 11, and the support frame 2 is installed on the outer surface of the buffer frame 12. The arc-shaped shell frame 1 is also installed with an alarm device 13, a switch device 14 and a trigger component 15 for triggering the switch device 14, wherein the alarm device 13 is electrically connected to the switch device 14, the switch device 14 is installed on the outer surface of the arched support frame 11, and the trigger component 15 is installed on the inner surface of the buffer frame 12.

[0044] When collapse occurs, the support frame 2 will first contact the tunnel collapse and provide support for the collapse. At the same time, the support frame 2 will gradually squeeze the arch support frame 11 and the buffer frame 12 installed on the outer surface of the arch support frame 11 under the action of thrust, and the trigger assembly 15 on the buffer frame 12 will gradually move toward the switch device 14 on the arch support frame 11 until it touches and triggers the switch device 14. The alarm device 13 electrically connected to the switch device 14 will send an alarm signal, and send out a warning signal in time to remind the workers in the tunnel of the correct escape route.

[0045] In a preferred embodiment, the switch device 14 is a mechanical touch switch. When the trigger component 15 touches the switch device 14, the switch device 14 will be triggered and the alarm device 13 will sound. When the underground tunnel collapses, the workers underground can be notified more quickly to avoid danger.

[0046] like Figure 3 As shown, in one embodiment, the trigger assembly 15 includes a trigger rod 151;

[0047] The trigger rod 151 is installed on the inner surface of the buffer frame 12. When the buffer frame 12 is pressed toward the arch support frame 11, the trigger rod 151 is pressed toward the switch device 14 until the trigger rod 151 presses the switch device 14 and the switch device 14 is triggered.

[0048] In this embodiment, the trigger assembly 15 installed on the inner surface of the buffer frame 12 includes a trigger rod 151. When the support frame 2 is pushed toward the buffer frame 12 and the arch support frame 11, the trigger rod 151 will be pressed toward the switch device 14 on the arch support frame 11 until the trigger rod 151 touches and presses the switch device 14. The switch device 14 will be triggered, and the alarm device 13 electrically connected thereto will also be triggered to send out a warning signal.

[0049] like Figure 3 , Figure 4 As shown, in another embodiment, the trigger rod 151 includes a top rod 1510, a first elastic member 1511 and a movable member 1512;

[0050] The push rod 1510 is installed on the inner surface of the buffer frame 12 , the surface of the push rod 1510 is connected to one end of the first elastic member 1511 , and the other end of the first elastic member 1511 is connected to the movable member 1512 .

[0051] In this embodiment, the top rod 1510 is installed on the inner surface of the buffer frame 12, and a first elastic member 1511 is installed on the surface of the top rod 1510, wherein the other end of the first elastic member 1511 is also connected to a movable member 1512. When the buffer frame 12 is squeezed toward the arch support frame 11, the top rod 1510 drives the first elastic member 1511 and the movable member 1512 to be squeezed toward the switch device 14. When the movable member 1512 touches and presses the switch device 14, the switch device 14 will be triggered. After the alarm device 13 is triggered, the movable member 1512 continues to squeeze the switch device 14. The movable member 1512 compresses the first elastic member 1511 toward the top rod 1510, thereby ensuring that the movable member 1512 and the switch device 14 are not damaged.

[0052] The first elastic member 1511 with different elasticity can also be replaced. The switch device 14 will be triggered only when the movable member 1512 touches the switch device 14 and continues to be pressed, and the first elastic member 1511 is compressed to a certain range.

[0053] The purpose of the top rod 1510 is to ensure that the movable part 1512 can successfully trigger the switch device 14. When the first elastic part 1511 is compressed to a certain range and does not trigger the switch device 14, the top rod 1510 can provide a certain supporting force to the first elastic part 1511 and the movable part 1512, so that the movable part 1512 can successfully trigger the switch device 14 and cause the alarm device 13 to be activated.

[0054] like Figure 3-5As shown, in one of the preferred embodiments, the trigger rod 151 also includes at least two first limiters 1513 evenly arranged on the side of the movable member 1512, a slide groove is formed between the at least two first limiters 1513, the first elastic member 1511 is installed in the slide groove, and a slider 1514 slidably installed in the slide groove is provided on the outer side of the movable member 1512.

[0055] In this embodiment, at least two first limiters 1513 are installed on the side of the movable part 1512, and a slide groove is formed between the two first limiters 1513. A slider 1514 that can be slidably installed in the slide groove is also provided on the outer side of the movable part 1512, and the first elastic part 1511 is installed in the slide groove. The slider 1514 can limit the movable part 1512 from sliding in the slide groove after touching the switch device 14.

[0056] The diameter of the switch device 14 is slightly smaller than the diameter of the slide groove formed between the two first limiters 1513. After the movable part 1512 touches the switch device 14, the movable part 1512 is pushed by the switch device 14 to squeeze the first elastic part 1511 in the direction of the top rod 1510. The movable part 1512 is restricted by the slider 1514 to slide in the slide groove. When continuously squeezed by the support frame 2, the switch device 14 squeezes the movable part 1512 and the first elastic part 1511, and the movable part 1512 will be pressed into the slide groove. Since the diameter of the switch device 14 is slightly smaller than the diameter of the slide groove, it will also enter the slide groove, thereby avoiding damage to the switch device 14 and the trigger assembly 15.

[0057] like Figure 6 As shown, in another embodiment, a plurality of second elastic members 16 are provided on the inner surface of the buffer frame 12 , and one end of the second elastic member 16 abuts against the buffer frame 12 , and the other end abuts against the arch support frame 11 .

[0058] In this embodiment, the inner surface of the buffer frame 12, that is, the side of the buffer frame 12 facing the arch support frame 11, is also provided with a plurality of second elastic members 16, one end of the second elastic member 16 abuts against the buffer frame 12, and the other end abuts against the arch support frame 11, providing a buffer area between the buffer frame 12 and the arch support frame 11, and the switch device 14 and the trigger assembly 15 are arranged between the buffer area. When collapse occurs and the support frame 2 is subjected to pressure to squeeze the buffer frame 12 toward the arch support frame 11, the buffer area will become smaller, thereby causing the trigger assembly 15 to trigger the switch device 14, and then trigger the alarm device 13.

[0059] like Figure 2 As shown, in another embodiment, the arc-shaped shell frame 1 further includes two outer support frames 17, which are respectively installed on the front and rear surfaces of the arch support frame 11, and an installation space is formed between the two outer support frames 17 and the buffer frame 12, and the support frame 2 is located in the installation space.

[0060] In this embodiment, two outer support frames 17 are respectively installed on the front and rear surfaces of the arch support frame 11, and an installation space for installing the support frame 2 is formed between the buffer frame 12. When the tunnel collapses, the support frame 2 will play a major supporting role. In order to prevent the support frame 2 from collapsing in the front and rear directions when it is under pressure, the two outer support frames 17 play a certain supporting role. When the support frame 2 is compressed and deformed, the entire arc-shaped shell frame 1 can support the support frame 2.

[0061] like Figure 1 As shown, in a preferred embodiment, the alarm device 13 can be a buzzer / voice prompter / sound and light alarm. The alarm device 13 is installed on the outside of the outer support frame 17, so that workers can more easily notice the collapse of the underground tunnel and escape in time. When the alarm device 13 is triggered, a buzzer / human voice / sound and light can be emitted on the outside of the outer support frame 17. The sound and light alarm can inform the workers underground of the correct retreat route, allowing the workers to evacuate in an orderly manner.

[0062] like Figure 6 As shown, in another embodiment, the outer support frame 17 includes a support plate 171 and an isolation plate 172;

[0063] The two support plates 171 are respectively located on the front and rear surfaces of the support frame 2, and an isolation plate 172 is also provided between each support plate 171 and the support frame 2;

[0064] A plurality of third elastic members 18 are disposed on a surface of the isolation plate 172 facing the support plate 171 .

[0065] In this embodiment, the support frame 2 is located between the two support plates 171, and an isolation plate 172 is provided between the support plate 171 and the support frame 2. The isolation plate 172 is provided with a plurality of third elastic members 18 on the side facing the support plate 171, which can provide a certain stability to the support frame 2 when subjected to horizontal force.

[0066] In another embodiment, at least one first fixing member 173 is further provided on one side of the isolation plate 172 facing the support plate 171, and at least one first embedding member embedded with the first fixing member 173 is further provided on one side of the support plate 171 facing the isolation plate 172;

[0067] At least one second fixing member 121 is further provided on the inner surface of the buffer frame 12 , and at least one second engaging member engaged with the second fixing member 121 is further provided on the outer side surface of the arch support frame 11 .

[0068] In this embodiment, a first fixing member 173 and a first interlocking member engaged with the first fixing member 173 are provided between the isolation plate 172 and the support plate 171, and a second fixing member 121 and a second interlocking member engaged with the second fixing member 121 are provided between the buffer frame 12 and the arch support frame 11, which will be more convenient during assembly.

[0069] like Figure 2 , Figure 6 As shown, in another preferred embodiment, the buffer frame 12 includes a plurality of buffer plates 120 , all of the buffer plates 120 are installed on the outer surface of the arch support frame 11 , and the support frame 2 is installed on the outer surface of the buffer plate 120 .

[0070] In this preferred embodiment, a plurality of buffer plates 120 constitute a buffer frame 12, wherein a trigger assembly 15 is installed on the inner surface of each buffer plate 120, and a switch device 14 is installed on the outer surface of the arch support frame 11 corresponding to each buffer plate 120, and when any trigger assembly 15 triggers the switch device 14, the alarm device 13 will be triggered. Multiple trigger assemblies 15 and switch devices 14 are conducive to early warning of tunnel collapse, and can simultaneously warn of collapse from the vertical direction and the horizontal direction, providing a safer underground support device.

[0071] like Figure 2 As shown, in another embodiment, two first fixing frames 19 are further installed at the bottom of the arc-shaped housing frame 1, and each first fixing frame 19 is further provided with at least one expansion bolt 190;

[0072] Two second fixing frames 21 are installed at the bottom of the support frame 2 . The second fixing frames 21 are installed below the first fixing frame 19 . Each second fixing frame 21 is also provided with at least one hole corresponding to the expansion bolt 190 .

[0073] In this embodiment, two first fixing frames 19 are provided at the bottom of the arc-shaped shell frame 1, and two second fixing frames 21 are installed at the bottom of the support frame 2, wherein the second fixing frames 21 are installed below the first fixing frames 19, and the second fixing frames 21 are also provided with holes corresponding to the expansion bolts 190 in the first fixing frames 19, so as to facilitate assembly, and the expansion bolts 190 are provided in the first fixing frames 19 and the second fixing frames 21 for installing and fixing the downhole support device.

[0074] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0075] The above description is only the principle and preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this field, the implementation methods obtained by appropriately combining the technical solutions disclosed in different embodiments are also included in the technical scope of the present invention. On the basis of the principle of the present application, several other variations can be made, which should also be regarded as the protection scope of the present application.

Claims

1. A downhole support device, characterized in that: The downhole support device comprises an arc-shaped shell frame and a support frame mounted on the arc-shaped shell frame, the arc-shaped shell frame comprises an arched support frame and a buffer frame, the buffer frame is mounted on the outer surface of the arched support frame, and the support frame is mounted on the outer surface of the buffer frame; The arc-shaped housing frame further comprises an alarm device, at least one switch device and at least one trigger assembly for triggering the switch device, the alarm device is electrically connected to the switch device, the switch device is mounted on the outer surface of the arch support frame, and the trigger assembly is mounted on the inner surface of the buffer frame; When collapse occurs, the support frame is pushed to squeeze the buffer frame toward the arch support frame, and the trigger component triggers the switch device.

2. A downhole support device according to claim 1, characterized in that: The trigger assembly includes a trigger rod; The trigger rod is installed on the inner surface of the buffer frame. When the buffer frame is pressed toward the arch support frame, the trigger rod is pressed toward the switch device until the trigger rod presses the switch device and the switch device is triggered.

3. A downhole support device according to claim 2, characterized in that: The trigger rod comprises a top rod, a first elastic member and a movable member; The push rod is installed on the inner surface of the buffer frame, the surface of the push rod is connected to one end of the first elastic member, and the other end of the first elastic member is connected to the movable member.

4. A downhole support device according to claim 3, characterized in that: The trigger rod also includes at least two first limiters evenly arranged on the side of the movable part, a slide groove is formed between the at least two first limiters, the first elastic part is installed in the slide groove, and a slider slidably installed in the slide groove is provided on the outer side of the movable part.

5. A downhole support device according to claim 1, characterized in that: A plurality of second elastic members are disposed on the inner surface of the buffer frame, one end of the second elastic member abuts against the buffer frame, and the other end abuts against the arch support frame.

6. A downhole support device according to claim 1, characterized in that: The arc-shaped shell frame also includes two outer support frames, which are respectively installed on the front and rear surfaces of the arch support frame. An installation space is formed between the two outer support frames and the buffer frame, and the support frame is located in the installation space.

7. A downhole support device according to claim 6, characterized in that: The outer support frame includes a support plate and an isolation plate; The two support plates are respectively located on the front and rear sides of the support frame, and the isolation plate is further provided between each support plate and the support frame; A plurality of third elastic members are disposed on a surface of the isolation plate facing the support plate.

8. A downhole support device according to claim 7, characterized in that: The isolation plate is further provided with at least one first fixing member on one side facing the support plate, and the support plate is further provided with at least one first embedding member embedded with the first fixing member on one side facing the isolation plate; The inner surface of the buffer frame is further provided with at least one second fixing member, and the outer side surface of the arch support frame is further provided with at least one second engaging member engaged with the second fixing member.

9. A downhole support device according to any one of claims 1 to 8, characterized in that: The buffer frame includes a plurality of buffer plates, all of which are mounted on the outer surface of the arch support frame, and the support frame is mounted on the outer surface of the buffer plate.

10. A downhole support device according to any one of claims 1 to 8, characterized in that: Two first fixing frames are also installed at the bottom of the arc-shaped frame, and each of the first fixing frames is also provided with at least one expansion bolt; Two second fixing frames are installed at the bottom of the support frame. The second fixing frames are installed below the first fixing frame. Each of the second fixing frames is also provided with at least one hole corresponding to the expansion bolt.

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