A roof falling rescue device for underground coal mine operation

Abstract

This utility model belongs to the technical field of rescue auxiliary devices, and particularly relates to a roof fall rescue device for underground coal mine operations. A roof fall rescue device for underground coal mine operations includes a base plate, on which a support extension mechanism and a fixing mechanism are provided. The support extension mechanism includes four hydraulic cylinders, a top plate, a receiving groove, two extension plates, a bidirectional threaded rod, a drive motor, two internally threaded sliders, and four inclined push rods. The four hydraulic cylinders are all fixedly installed on the top of the base plate, and the top plate is fixedly installed on the output shafts of the four hydraulic cylinders. The receiving groove is opened on the top plate, and the two extension plates are slidably installed in the receiving groove. The bidirectional threaded rod is rotatably installed in the receiving groove, and the drive motor is fixedly installed on one side of the top plate. The roof fall rescue device for underground coal mine operations provided by this utility model has the advantages of supporting the roof of the underground mine and being able to precisely adjust the support range according to the size of the mine.

Description

Technical Field

[0001] This utility model belongs to the technical field of rescue auxiliary devices, and in particular relates to a roof collapse rescue device for underground coal mine operations. Background Technology

[0002] Roof collapse refers to an accident in which the top or sidewalls of a mine, tunnel, or culvert collapse due to improper excavation or support, causing damage. The phenomenon of the mine working face and roadway sidewalls deforming, breaking, and falling off under the pressure of the mine is called sidewall spalling, while the collapse of the top is called roof collapse. The two often occur simultaneously. When a roof collapse occurs, rescue operations are carried out. In order to ensure the safety of the rescue, support devices are needed to support the top of the mine.

[0003] In related technologies, a coal mine roof fall rescue device is disclosed, which includes a base, a support plate laid flat on the base, a shock-absorbing component disposed between the base and the support plate, a top plate laid flat on the support plate, and a top extension member disposed between the support plate and the top plate for adjusting the height of the top plate. This coal mine roof fall rescue device has good seismic performance, thus making it better suited for harsh working environments and improving its own fracture resistance. In addition, the coal mine roof fall rescue device of this application has a simple structure and high stability.

[0004] However, the above structure still has shortcomings. When performing roof collapse rescue in coal mines, the size of the roof is fixed and the width of the roof cannot be adjusted according to the size of the space inside the mine, resulting in gaps when supporting the top of the mine.

[0005] Therefore, it is necessary to provide a new roof collapse rescue device for underground coal mine operations to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem solved by this utility model is to provide a roof collapse rescue device for underground coal mine operations that can support the roof of the mine shaft and can precisely adjust the support range according to the size of the mine shaft.

[0007] To solve the above-mentioned technical problems, the present invention provides a roof collapse rescue device for underground coal mine operations, including a base plate, on which a support extension mechanism and a fixing mechanism are provided;

[0008] The supporting extension mechanism includes four hydraulic cylinders, a top plate, a storage slot, two extension plates, a bidirectional threaded rod, a drive motor, two internal threaded sliders, and four inclined push rods. All four hydraulic cylinders are fixedly mounted on the top of the base plate. The top plate is fixedly mounted on the output shafts of the four hydraulic cylinders. The storage slot is located on the top plate. Both extension plates are slidably mounted within the storage slot. The bidirectional threaded rod is rotatably mounted within the storage slot. The drive motor is fixedly mounted on one side of the top plate, and its output shaft is fixedly connected to one end of the bidirectional threaded rod. Both internal threaded sliders are threaded onto the bidirectional threaded rod. The four inclined push rods are respectively hinged to both sides of the two internal threaded sliders, and one end of each of the four inclined push rods is hinged to one of the two extension plates.

[0009] As a further embodiment of this utility model, the fixing mechanism includes two strip plates, two internally threaded sleeves, two one-way threaded rods, two first bevel gears, two fixing plates, a rotating shaft, two second bevel gears, and a handwheel. The two strip plates are both disposed below the base plate. The two internally threaded sleeves are respectively fixedly installed on the top of the two strip plates. The two one-way threaded rods are respectively threaded into the two internally threaded sleeves. The two one-way threaded rods penetrate the base plate and are rotatably connected to it. The two first bevel gears are respectively fixedly installed at the top of the two one-way threaded rods. The two fixing plates are both fixedly installed on the top of the base plate. The rotating shaft is rotatably installed on the two fixing plates. The two second bevel gears are fixedly sleeved on the rotating shaft. The first and second bevel gears mesh with each other. The handwheel is fixedly installed at one end of the rotating shaft.

[0010] As a further embodiment of this utility model, four support wheels are fixedly installed on the base plate, and the four support wheels are symmetrically distributed on both sides of the base plate.

[0011] As a further embodiment of this utility model, two limiting grooves are provided on both sides of the top plate, and limiting sliders are fixedly installed on both sides of the two extension plates. The limiting sliders extend into the limiting grooves and are adapted to the limiting grooves.

[0012] As a further embodiment of this utility model, two guide rods are fixedly installed on the top of the strip plate. Both guide rods penetrate the bottom plate and are slidably connected to the bottom plate. An anti-detachment plate is fixedly installed on the top of the guide rods.

[0013] As a further embodiment of this utility model, the bottom of both strip plates is provided with anti-slip texture.

[0014] Compared with related technologies, the roof collapse rescue device for underground coal mine operations provided by this utility model has the following beneficial effects:

[0015] 1. This utility model, by setting a support extension mechanism, enables the roof of the mine shaft to be supported, and the support range can be adjusted according to the size of the mine shaft.

[0016] 2. By setting a fixing mechanism, this utility model enables the strip plate to move down to contact the ground after the device is moved to the position that needs support in the mine, thereby fixing the position of the device. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of the overall structure of the roof collapse rescue device for underground coal mine operations provided by this utility model;

[0019] Figure 2 This is a partial structural diagram of the roof collapse rescue device for underground coal mine operations provided by this utility model;

[0020] Figure 3 This is a second partial structural diagram of the roof collapse rescue device for underground coal mine operations provided by this utility model.

[0021] In the diagram: 1. Base plate; 2. Hydraulic cylinder; 3. Top plate; 4. Storage slot; 5. Extension plate; 6. Bidirectional threaded rod; 7. Drive motor; 8. Internal threaded slider; 9. Inclined push rod; 10. Strip plate; 11. Internal threaded sleeve; 12. One-way threaded rod; 13. First bevel gear; 14. Fixing plate; 15. Rotating shaft; 16. Second bevel gear; 17. Handwheel; 18. Support wheel. Detailed Implementation

[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will understand that modifications and variations can be made to the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model should fall within the protection scope of the present utility model.

[0023] Please refer to the following: Figure 1 , Figure 2 and Figure 3 A roof collapse rescue device for underground coal mine operations includes a base plate 1, on which a support extension mechanism and a fixing mechanism are provided;

[0024] The supporting extension mechanism includes four hydraulic cylinders 2, a top plate 3, a storage groove 4, two extension plates 5, a bidirectional threaded rod 6, a drive motor 7, two internal threaded sliders 8, and four inclined push rods 9. The four hydraulic cylinders 2 are all fixedly installed on the top of the base plate 1. The top plate 3 is fixedly installed on the output shaft of the four hydraulic cylinders 2. The storage groove 4 is opened on the top plate 3. The two extension plates 5 are slidably installed in the storage groove 4. The bidirectional threaded rod 6 is rotatably installed in the storage groove 4. The drive motor 7 is fixedly installed on one side of the top plate 3. The output shaft of the drive motor 7 is fixedly connected to one end of the bidirectional threaded rod 6. The two internal threaded sliders 8 are threaded onto the bidirectional threaded rod 6. The four inclined push rods 9 are respectively hinged to both sides of the two internal threaded sliders 8. One end of the four inclined push rods 9 is respectively hinged to the two extension plates 5.

[0025] like Figure 2 As shown, the fixing mechanism includes two strip plates 10, two internal threaded sleeves 11, two one-way threaded rods 12, two first bevel gears 13, two fixing plates 14, a rotating shaft 15, two second bevel gears 16, and a handwheel 17. The two strip plates 10 are both located below the base plate 1. The two internal threaded sleeves 11 are respectively fixedly installed on the top of the two strip plates 10. The two one-way threaded rods 12 are respectively threaded into the two internal threaded sleeves 11. The two one-way threaded rods 12 pass through the base plate 1 and are rotatably connected to the base plate 1. The two first bevel gears 13 are respectively fixedly installed on the top of the two one-way threaded rods 12. The two fixing plates 14 are both fixedly installed on the top of the base plate 1. The rotating shaft 15 is rotatably installed on the two fixing plates 14. The two second bevel gears 16 are both fixedly sleeved on the rotating shaft 15. The first bevel gears 13 and the second bevel gears 16 mesh with each other. The handwheel 17 is fixedly installed at one end of the rotating shaft 15.

[0026] By setting up a fixing mechanism, after the device is moved to the position in the mine where support is needed, the strip plate 10 can be lowered to contact the ground to fix the position of the device.

[0027] like Figure 1 and Figure 2 As shown, four support wheels 18 are fixedly installed on the base plate 1, and the four support wheels 18 are symmetrically distributed on both sides of the base plate 1;

[0028] By providing support wheels 18, the device can be easily supported and moved.

[0029] like Figure 3 As shown, two limiting grooves are provided on both sides of the top plate 3, and limiting sliders are fixedly installed on both sides of the two extension plates 5. The limiting sliders extend into the limiting grooves and are adapted to the limiting grooves.

[0030] By setting a limiting groove and a limiting slider, the range of the extension plate 5 can be limited to prevent the extension plate 5 from moving out of the storage slot 4.

[0031] like Figure 2 As shown, two guide rods are fixedly installed on the top of the strip plate 10. Both guide rods pass through the base plate 1 and are slidably connected to the base plate 1. Anti-detachment plates are fixedly installed on the top of the guide rods.

[0032] By setting guide rods and anti-detachment plates, the internal threaded sleeve 11 and strip plate 10 are prevented from rotating with the one-way threaded rod 12, so that the strip plate 10 can rise and fall smoothly.

[0033] like Figure 2 As shown, the bottom of both strip plates 10 are provided with anti-slip texture;

[0034] By setting anti-slip textures, the friction between the strip plate 10 and the ground can be increased after the strip plate 10 contacts the ground.

[0035] Hydraulic cylinder 2 is a Φ140 / 100-800 standard oil cylinder, and drive motor 7 is a 42 stepper motor.

[0036] The working principle of the roof collapse rescue device for underground coal mine operations provided by this utility model is as follows:

[0037] First step: When using the device, push it into the mine to the location where a roof collapse rescue is needed. Use the handwheel 17 to drive the rotating shaft 15 to rotate. The rotating shaft 15 drives the two second bevel gears 16 to rotate. The second bevel gears 16 drive the first bevel gear 13 to rotate. The first bevel gear 13 drives the one-way threaded rod 12 to rotate. The one-way threaded rod 12 drives the internal threaded sleeve 11 and the strip plate 10 to move down, so that the strip plate 10 contacts the ground and fixes the position of the device.

[0038] The second step is to start the drive motor 7, which drives the bidirectional threaded rod 6 to rotate. The bidirectional threaded rod 6 drives the two internal threaded sliders 8 to move away from each other. The internal threaded sliders 8 push the two extension plates 5 out of the receiving groove 4 through the inclined push rod 9, thereby adjusting the support range according to the size of the mine. Then, multiple hydraulic cylinders 2 are started, which drive the top plate 3 and the extension plates 5 to move upward to support the mine and prevent further collapse.

[0039] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0040] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A roof collapse rescue device for underground coal mine operations, characterized in that: Includes a base plate, on which a supporting extension mechanism and a fixing mechanism are provided; The supporting extension mechanism includes four hydraulic cylinders, a top plate, a storage slot, two extension plates, a bidirectional threaded rod, a drive motor, two internal threaded sliders, and four inclined push rods. All four hydraulic cylinders are fixedly mounted on the top of the base plate. The top plate is fixedly mounted on the output shafts of the four hydraulic cylinders. The storage slot is located on the top plate. Both extension plates are slidably mounted within the storage slot. The bidirectional threaded rod is rotatably mounted within the storage slot. The drive motor is fixedly mounted on one side of the top plate, and its output shaft is fixedly connected to one end of the bidirectional threaded rod. Both internal threaded sliders are threaded onto the bidirectional threaded rod. The four inclined push rods are respectively hinged to both sides of the two internal threaded sliders, and one end of each of the four inclined push rods is hinged to one of the two extension plates.

2. The roof collapse rescue device for underground coal mine operations according to claim 1, characterized in that: The fixing mechanism includes two strip plates, two internally threaded sleeves, two one-way threaded rods, two first bevel gears, two fixing plates, a rotating shaft, two second bevel gears, and a handwheel. The two strip plates are both located below the base plate. The two internally threaded sleeves are respectively fixedly installed on the top of the two strip plates. The two one-way threaded rods are respectively threaded into the two internally threaded sleeves. Both one-way threaded rods penetrate the base plate and are rotatably connected to it. The two first bevel gears are respectively fixedly installed at the top of the two one-way threaded rods. The two fixing plates are both fixedly installed on the top of the base plate. The rotating shaft is rotatably installed on the two fixing plates. The two second bevel gears are fixedly sleeved on the rotating shaft. The first and second bevel gears mesh with each other. The handwheel is fixedly installed at one end of the rotating shaft.

3. The roof collapse rescue device for underground coal mine operations according to claim 1, characterized in that: Four support wheels are fixedly installed on the base plate, and the four support wheels are symmetrically distributed on both sides of the base plate.

4. The roof collapse rescue device for underground coal mine operations according to claim 1, characterized in that: Two limiting grooves are provided on both sides of the top plate, and limiting sliders are fixedly installed on both sides of the two extension plates. The limiting sliders extend into the limiting grooves and are adapted to the limiting grooves.

5. The roof collapse rescue device for underground coal mine operations according to claim 2, characterized in that: Two guide rods are fixedly installed on the top of the strip plate. Both guide rods penetrate the bottom plate and are slidably connected to the bottom plate. Anti-detachment plates are fixedly installed on the top of the guide rods.

6. The roof collapse rescue device for underground coal mine operations according to claim 2, characterized in that: Both strips have anti-slip textures on their bottoms.

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