Stopping open-off cut top-cutting pressure relief device

Abstract

The invention discloses a stopping open-off cut top-cutting pressure relief device, and belongs to the technical field of stopping open-off cut top-cutting. The box body is of a hollow structure with an opening in the top; the fixing blocks are arranged at intervals, and each fixing block is connected with the top of the box body; a fixing rod is connected between every two adjacent fixing blocks. The third connecting pieces are arranged in the center of the box body at intervals; one end of the extension component is rotationally connected with the side surface of the third connecting piece; the elastic net is arranged above the stretching assembly and is fixedly connected between the third connecting piece and the fixing rod; the lifting assembly is vertically arranged in the box body, one end is fixedly connected with the inner bottom of the box body, and the other end is fixedly connected with the bottom of the third connecting piece. The box body is adjusted to a proper height through the hydraulic rod, the elastic net covers the open-off cut and top cut blasting position, and the elastic net can receive fragments; the lifting assembly drives the stretching assembly to eject the elastic net upwards, so that the fragments on the elastic net are separated from the elastic net.

Description

Technical Field

[0001] This invention relates to the field of stop-mining cut-off and top-cutting technology, and specifically to a stop-mining cut-off and top-cutting pressure relief device. Background Technology

[0002] The roof cutting and depressurization process involves pre-fracking blasting boreholes along the pre-reserved roadway ahead of the working face to pre-fracture the roof, creating a cut along a predetermined direction, which is the roof cutting line. A depressurization device is required when cutting the roof during the shutdown phase.

[0003] While current depressurization devices for stopping mining and cutting the top can release pressure, they still cannot prevent the explosion of debris from damaging the roadway, leading to the need for continuous roadway repairs. However, their support capacity is limited, and the vicious cycle still cannot guarantee the safety of the roadway.

[0004] Therefore, it is necessary to provide a device for stopping mining, cutting the eye, and removing pressure from the top. Summary of the Invention

[0005] The purpose of this invention is to provide a stop-mining cut-off and roof-cutting pressure relief device to solve the problem that existing stop-mining cut-off and roof-cutting pressure relief devices inevitably cause roadway damage from exploding fragments during use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A device for stopping mining and cutting off the top to relieve pressure includes: The box body is a hollow structure with an opening at the top; Multiple spaced-apart fixing blocks, each of which is connected to the top of the housing; a fixing rod connects adjacent two fixing blocks. The third connector is spaced out at the center of the housing; The extension assembly has one end rotatably connected to the side of the third connector and the other end rotatably connected to the fixing rod; An elastic netting positioned above the extension assembly is fixedly connected between the third connector and the fixing rod. The lifting assembly is vertically installed inside the housing, with one end fixedly connected to the bottom of the housing and the other end fixedly connected to the bottom of the third connector.

[0007] Furthermore, the stretching component includes: A first connector and a second connector are disposed between the fixed rod and the third connector; the first connector has a first elongated hole structure, and the second connector has a second elongated hole structure; A second connecting shaft is inserted through the second elongated hole structure. One end of the first connecting member near the second connecting member is fixedly connected to the second connecting shaft. The other end of the first connecting member is rotatably connected to the fixed rod. The first connecting member is slidably connected to the second connecting member through the second connecting shaft. A first connecting shaft is inserted through the first elongated hole structure. One end of the second connecting member near the first connecting member is fixedly connected to the first connecting shaft. The other end of the second connecting member is hinged to one side of the third connecting member through a hinge seat. The second connecting member is slidably connected to the first connecting member through the first connecting shaft.

[0008] Furthermore, the number of the extension components is multiple sets, and the multiple sets of extension components are arranged in an array with the third connector as the center.

[0009] Furthermore, the box body is a cube structure, and the fixing block and the fixing rod are respectively connected to the top edge of the cube structure.

[0010] Furthermore, the lifting assembly includes: A fixing seat that is fixedly connected to the inner bottom of the box; The telescopic rod and the rack are provided, with the fixed end of the telescopic rod connected to the top of the fixed base and the extended end of the telescopic rod connected to one end of the rack; the other end of the rack is connected to the bottom of the third connector. A drive motor is fixedly installed inside the housing, and a gear is connected to the drive end of the drive motor, which meshes with the rack. The limiting wheel is fixedly connected to the inside of the housing via a rotating shaft, and the limiting wheel and the gear are symmetrically arranged on both sides of the rack. The rack has a groove on the side away from the gear, and the limiting wheel is slidably connected to the groove.

[0011] Furthermore, the bottom of the box is fixedly connected with a plurality of symmetrically arranged casters.

[0012] Furthermore, a hydraulic rod connects the housing to the casters.

[0013] The present invention has the following beneficial effects: This invention uses a hydraulic rod to adjust the box to a suitable height, and then covers the cutting and blasting position with an elastic net. The elastic net can catch the fragments. The lifting component drives the extension component to push the elastic net upward, so that the fragments on the elastic net can be removed from the elastic net. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the main structure of the stop-mining and top-cutting pressure relief device provided by the present invention; Figure 2 This is a schematic diagram of the internal structure of the stop-mining and top-cutting pressure relief device provided by the present invention; Figure 3 A bottom view of the extension component and elastic net in the stop-mining cut-off and top-cutting pressure relief device provided by the present invention; Figure 4 This is a schematic diagram of the main structure of the extension component in the stop-mining and top-cutting pressure relief device provided by the present invention; Figure 5 This is a schematic diagram of the lifting component in the stop-mining and top-cutting pressure relief device provided by the present invention.

[0015] The components are: 1. Box body; 2. Extension assembly; 201. First connecting piece; 202. Second connecting piece; 203. First connecting shaft; 204. Second connecting shaft; 205. Third connecting shaft; 3. Lifting assembly; 301. Fixed seat; 302. Telescopic rod; 303. Spur rack; 304. Gear; 305. Limiting wheel; 4. Universal wheel; 5. Fixed block; 6. Fixed rod; 7. Third connecting piece; 8. Elastic net; 9. Hydraulic rod. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0017] Example 1 Reference Figure 1-5 In this embodiment, a stop-mining and top-cutting pressure relief device includes: The box body 1 is a hollow structure with an open top. Multiple symmetrically arranged casters 4 are fixedly connected to the bottom of the box body 1 for easy movement. A hydraulic rod 9 connects the box body 1 and the casters 4, allowing for raising and lowering of the box body 1 to adjust its height.

[0018] Multiple spaced-apart fixing blocks 5 are connected to the top of the housing 1; a fixing rod 6 connects adjacent fixing blocks 5. A third connecting piece 7 is spaced apart at the center of the housing 1. One end of the extension assembly 2 is rotatably connected to the side of the third connecting piece 7, and the other end is rotatably connected to the fixing rod 6. An elastic net 8, positioned above the extension assembly 2, is fixedly connected between the third connecting piece 7 and the fixing rod 6. The elastic net 8 is made of rigid material to prevent damage from explosive impacts. A lifting assembly 3 is vertically installed inside the housing 1, with one end fixedly connected to the inner bottom of the housing 1 and the other end fixedly connected to the bottom of the third connecting piece 7.

[0019] In this embodiment, the hydraulic rod 9 is used to adjust the box 1 to a suitable height, and the elastic net 8 is used to cover the cutting hole and roof blasting position. The elastic net 8 can catch the fragments. The lifting component 3 drives the extension component 2 to push the elastic net 8 upward, so that the fragments on the elastic net 8 are removed from the elastic net 8. This solves the problem that the existing stop-mining cutting hole and roof blasting pressure relief device cannot avoid the damage to the roadway caused by the blasting fragments.

[0020] Example 2 Reference Figure 1-5 The difference between this embodiment and Embodiment 1 is that the extension component 2 includes: A first connector 201 and a second connector 202 are disposed between the fixed rod 6 and the third connector 7; the first connector 201 has a first elongated hole structure, and the second connector 202 has a second elongated hole structure.

[0021] The second connecting shaft 204 is inserted into the second elongated hole structure. The end of the first connecting member 201 near the second connecting member 202 is fixedly connected to the second connecting shaft 204. The other end of the first connecting member 201 is rotatably connected to the fixed rod 6. The first connecting member 201 is slidably connected to the second connecting member 202 through the second connecting shaft 204.

[0022] A first connecting shaft 203 is inserted through the first elongated hole structure. One end of a second connecting member 202 near the first connecting member 201 is fixedly connected to the first connecting shaft 203. The other end of the second connecting member 202 is hinged to one side of a third connecting member 7 via a third connecting shaft 205. The second connecting member 202 is slidably connected to the first connecting member 201 via the first connecting shaft 203. Through the sliding cross-connection of the first connecting member 201 and the second connecting member 202, the first connecting member 201 and the second connecting member 202 can overlap and separate, thereby pushing the elastic net 8 out of the housing 1 and dislodging the fragments on the elastic net 8.

[0023] Understandably, in order to provide more stable support for the elastic net 8, the number of extension components 2 is multiple, and the multiple sets of extension components 2 are arranged in an array with the third connector 7 as the center.

[0024] Preferably, the box 1 is a cube structure, and the fixing block 5 and the fixing rod 6 are respectively connected to the top edge of the cube structure.

[0025] Specifically, in this embodiment, the lifting assembly 3 includes: a fixed base 301 fixedly connected to the inner bottom of the housing 1; a telescopic rod 302 and a rack 303, wherein the fixed end of the telescopic rod 302 is connected to the top of the fixed base 301, and the extended end of the telescopic rod 302 is connected to one end of the rack 303; the other end of the rack 303 is connected to the bottom of the third connector 7.

[0026] A drive motor is fixedly installed inside the housing 1. A gear 304 is connected to the drive end of the drive motor, and the gear 304 meshes with a rack 303. A limiting wheel 305 is fixedly connected to the inside of the housing 1 via a rotating shaft. The limiting wheel 305 and the gear 304 are symmetrically arranged on both sides of the rack 303. The side of the rack 303 away from the gear 304 has a groove, and the limiting wheel 305 is slidably connected to the groove.

[0027] In this embodiment, the drive motor drives the gear 304 to rotate forward, thereby causing the rack 303 to drive the third connector 7 to move upward. At this time, the first connector 201 and the second connector 202 gradually separate, pushing the elastic net 8 upward so that the fragments on the elastic net 8 are removed from the elastic net 8. The drive motor drives the gear 304 to rotate in reverse, thereby causing the rack 303 to drive the third connector 7 to move downward. At this time, the first connector 201 and the second connector 202 gradually overlap, and the elastic net 8 is collected into the housing 1.

[0028] Example 3 The working process of the stop-mining cut-off and top-cutting pressure relief device in this embodiment is as follows: According to specific actual needs, the housing 1 is moved to a suitable position, and the hydraulic rod 9 is used to adjust the housing 1 to a suitable height. The elastic net 8 is then placed over the cutting and roof blasting location. During the cutting and roof blasting, a large number of fragments will fly. The elastic net 8 can buffer the impact force of the blast, achieving the purpose of pressure relief. The elastic net 8 can also catch the fragments. After the blasting is completed, the housing 1 containing the fragments is moved out of the tunnel. The drive motor drives the gear 304 to rotate forward, thereby causing the rack 303 to drive the third connecting member 7 to move upward. At this time, the first connecting member 201 and the second connecting member 202 gradually separate, pushing the elastic net 8 upward so that the fragments on the elastic net 8 are removed from the elastic net 8. After the fragments are dumped, the drive motor drives the gear 304 to rotate in reverse, thereby causing the rack 303 to drive the third connecting member 7 to move downward. At this time, the first connecting member 201 and the second connecting member 202 gradually overlap, and the elastic net 8 is collected back into the housing 1.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0031] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0032] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0033] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A device for stopping mining and cutting the top to relieve pressure, characterized in that, include: The box body is a hollow structure with an opening at the top; Multiple spaced-apart fixing blocks, each of which is connected to the top of the housing; a fixing rod connects adjacent two fixing blocks. The third connector is spaced out at the center of the housing; The extension assembly has one end rotatably connected to the side of the third connector and the other end rotatably connected to the fixing rod; An elastic netting positioned above the extension assembly is fixedly connected between the third connector and the fixing rod. The lifting assembly is vertically installed inside the housing, with one end fixedly connected to the bottom of the housing and the other end fixedly connected to the bottom of the third connector.

2. The depressurization device for stopping mining and cutting the top as described in claim 1, characterized in that, The extension component includes: A first connector and a second connector are disposed between the fixed rod and the third connector; the first connector has a first elongated hole structure, and the second connector has a second elongated hole structure; A second connecting shaft is inserted through the second elongated hole structure. One end of the first connecting member near the second connecting member is fixedly connected to the second connecting shaft. The other end of the first connecting member is rotatably connected to the fixed rod. The first connecting member is slidably connected to the second connecting member through the second connecting shaft. A first connecting shaft is inserted through the first elongated hole structure. One end of the second connecting member near the first connecting member is fixedly connected to the first connecting shaft. The other end of the second connecting member is hinged to one side of the third connecting member through a hinge seat. The second connecting member is slidably connected to the first connecting member through the first connecting shaft.

3. The depressurization device for stopping mining and cutting the top as described in claim 2, characterized in that, The number of the extension components is multiple sets, and the multiple sets of extension components are arranged in an array with the third connector as the center.

4. The depressurization device for stopping mining and cutting the top as described in claim 2, characterized in that, The box is a cube structure, and the fixing block and the fixing rod are respectively connected to the top edge of the cube structure.

5. The depressurization device for stopping mining and cutting the top as described in claim 3, characterized in that, The lifting assembly includes: A fixing seat that is fixedly connected to the inner bottom of the box; The telescopic rod and the rack are provided, with the fixed end of the telescopic rod connected to the top of the fixed base and the extended end of the telescopic rod connected to one end of the rack; the other end of the rack is connected to the bottom of the third connector. A drive motor is fixedly installed inside the housing, and a gear is connected to the drive end of the drive motor, which meshes with the rack. The limiting wheel is fixedly connected to the inside of the housing via a rotating shaft, and the limiting wheel and the gear are symmetrically arranged on both sides of the rack. The rack has a groove on the side away from the gear, and the limiting wheel is slidably connected to the groove.

6. The depressurization device for stopping mining and cutting the top as described in claim 1, characterized in that, The bottom of the box is fixedly connected to a number of symmetrically arranged casters.

7. The depressurization device for stopping mining and cutting the top as described in claim 6, characterized in that, A hydraulic rod connects the housing to the casters.

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