A deep rock excavation pressure relief device

Abstract

The application provides a deep buried rock excavation pressure relief device, and relates to the technical field of rock burst prevention. The deep buried rock excavation pressure relief device comprises an air outlet pipeline and an air inlet assembly. The outlet of the air outlet pipeline is used for communicating with the atmosphere. The air inlet assembly comprises a sleeve, a cap head and a movable jacking piece. The upper end of the sleeve is provided with a pressure relief hole which is in communication with the inlet of the air outlet pipeline. The cap head is arranged at the lower end of the sleeve. The cap head is formed with an air inlet hole which is in communication with the inner cavity of the sleeve. The inner diameter of the air inlet hole is smaller than the inner diameter of the inner cavity of the sleeve. The movable jacking piece comprises a push plate part and a jacking part. The push plate part is arranged in the sleeve and is in sliding fit with the inner wall of the sleeve. The push plate part is provided with an air outlet hole. The jacking part is arranged in the air inlet hole and is in sliding fit with the hole wall of the air inlet hole. The push plate part and the jacking part are connected through a connecting part. The deep buried rock excavation pressure relief device can effectively discharge high-pressure gas to the outside world and has good buffering effect, thereby improving the safety of deep buried rock excavation.

Description

Technical Field

[0001] This invention relates to the field of rockburst prevention technology, and more specifically, to a pressure relief device for excavating deeply buried rocks. Background Technology

[0002] The greater the tunnel's burial depth, the higher the stored in-situ stress due to geological activity. In excessively deep tunnels, the high in-situ stress causes the original load balance to be disrupted during excavation, generating high-pressure gas and potentially leading to rockbursts. Currently, methods to reinforce the excavated rock strata are used to prevent rockbursts, but the high-pressure gas still cannot be effectively released to the outside, resulting in poor pressure relief and impacting the safety of excavating deep-buried rock. Summary of the Invention

[0003] The present invention aims to solve the problem that high-pressure gas cannot be effectively discharged to the outside during deep rock excavation, resulting in poor pressure relief and affecting the safety of deep rock excavation.

[0004] To address the aforementioned problems, this invention provides a pressure relief device for deep-buried rock excavation, comprising an air outlet pipe and an air inlet assembly. The outlet of the air outlet pipe is connected to the atmosphere. The air inlet assembly includes a sleeve, a cap, and a movable lifting component. The upper end of the sleeve is provided with a pressure relief hole communicating with the inlet of the air outlet pipe. The cap is located at the lower end of the sleeve, and an air inlet hole communicating with the inner cavity of the sleeve is formed inside the cap. The inner diameter of the air inlet hole is smaller than the inner diameter of the inner cavity of the sleeve. The movable lifting component includes a push plate portion and a lifting portion. The push plate portion is located inside the sleeve and slides against the inner wall of the sleeve. An exhaust hole is provided on the push plate portion. The lifting portion is located inside the air inlet hole and slides against the hole wall of the air inlet hole. The push plate portion and the lifting portion are connected by a connecting portion.

[0005] Optionally, a limiting sleeve is fixedly provided on the inner wall of the sleeve, and the limiting sleeve is provided with a guide hole and a vent hole;

[0006] The connecting part is configured as a connecting rod, and the connecting rod passes through the guide hole.

[0007] Optionally, a spring is sleeved around the periphery of the connecting rod, with the upper end of the spring connected to the limiting sleeve and the lower end connected to the lifting part.

[0008] Optionally, the sleeve includes a first cylindrical section, a rubber buffer section, and a second cylindrical section connected sequentially from top to bottom.

[0009] Optionally, it also includes a protective shell, which is disposed around the periphery of the first cylindrical portion.

[0010] Optionally, the rubber buffer portion has a first shoulder protruding from the outer side wall of the second cylindrical portion;

[0011] The deep-buried rock excavation pressure relief device also includes a rubber energy-absorbing cover, which is sleeved on the periphery of the second cylinder and located between the first shoulder and the cap.

[0012] Optionally, the material of the cap head includes hardened steel.

[0013] Optionally, the gas outlet pipe includes a pressure relief pipe, a connecting pipe connected to the pressure relief pipe, and a metal pipe connected to the connecting pipe, wherein the metal pipe is retractable;

[0014] The upper end of the sleeve is connected to the lower end of the metal tube.

[0015] Optionally, it also includes a snap-fit ​​assembly, which includes a snap-fit ​​base and a snap-fit ​​member. The snap-fit ​​base is sleeved on the side wall of the sleeve, and the snap-fit ​​member passes through the snap-fit ​​base radially along the sleeve and is used to move in a direction away from or close to the sleeve. The end of the snap-fit ​​member opposite to the sleeve is provided with a snap-fit ​​connector.

[0016] Optionally, the card holder is provided with a mounting wall;

[0017] The snap-fit ​​assembly further includes a fixed sleeve and a rotating sleeve. The fixed sleeve is disposed on the snap-fit ​​base and located on the side of the mounting wall close to the sleeve. The axial direction of the fixed sleeve extends radially along the sleeve. The rotating sleeve is installed inside the fixed sleeve and is used to rotate circumferentially along the fixed sleeve. The inner wall of the rotating sleeve is provided with a sliding portion extending axially thereon.

[0018] The snap-fit ​​component is threaded to the mounting wall and passes through the rotating sleeve. The snap-fit ​​connector is located on the side of the mounting wall opposite to the sleeve. The snap-fit ​​component is provided with a mating part that slides with the sliding part.

[0019] Optionally, the sliding part includes a retaining strip, and the mating part includes a limiting groove.

[0020] Optionally, the snap-fit ​​assembly further includes a first driving member, which is connected to the rotating sleeve and is used to drive the rotating sleeve to rotate circumferentially along the fixed sleeve.

[0021] Optionally, the first driving component includes a first motor, which is connected to the rotating sleeve via a helical gear transmission structure.

[0022] Optionally, it also includes a support assembly, which includes a mounting bracket and a support member. The mounting bracket is disposed on the outside of the sleeve, and the lower end of the support member is hinged to the mounting bracket. The support member is used to rotate relative to the mounting bracket so that the upper end of the support member moves in a direction away from or towards the sleeve.

[0023] Optionally, the support member is inclined downward along the direction close to the sleeve;

[0024] The support assembly also includes a limiting wheel, which is disposed on the mounting frame. The limiting wheel is located on the side of the support member closer to the sleeve and its wheel surface is in contact with the side wall surface of the support member. The limiting wheel is used to move in the vertical direction relative to the mounting frame to drive the support member to rotate relative to the mounting frame.

[0025] Optionally, the mounting bracket is provided with vertically extending sliding grooves, and the axle of the limiting wheel slides in cooperation with the sliding grooves.

[0026] Optionally, the support member is provided with a sliding groove extending vertically, and a limiting rod is provided on the sliding groove to slide with it. The limiting rod is connected to the wheel axle of the limiting wheel through a telescopic sleeve.

[0027] Optionally, the support assembly further includes a threaded sleeve and a threaded ring. The threaded sleeve is fitted around the periphery of the sleeve and is used to rotate around the periphery of the sleeve. The threaded ring is threadedly connected to the periphery of the threaded sleeve and to the axle of the limiting wheel.

[0028] Optionally, the support assembly further includes a second driving member connected to the threaded sleeve for driving the threaded sleeve to rotate circumferentially along the sleeve.

[0029] Optionally, the second driving component includes a second motor, which is connected to the threaded sleeve via a gear ring transmission structure.

[0030] Optionally, it also includes a protective netting, which is provided over the head of the hat.

[0031] The present invention provides a pressure relief device for deep-buried rock excavation, which, compared with the prior art, has the following beneficial effects, but is not limited to:

[0032] In the pressure relief device for deep-buried rock excavation, an air inlet is formed inside the cap head, communicating with the inner cavity of the sleeve. An exhaust port is provided on the push plate. The upper end of the sleeve is provided with a pressure relief port communicating with the inlet of the exhaust pipe. Thus, the air inlet, exhaust port, pressure relief port, and exhaust pipe can be connected to form a gas channel for the flow of high-pressure gas. Furthermore, the push plate is located inside the sleeve and slides with the inner wall of the sleeve. Thus, when high-pressure gas flows through the exhaust port, it can drive the push plate to slide along the inner wall of the sleeve. The push plate, in turn, acts as a damping force to impede the high-pressure gas. At the same time, the lifting part is located inside the air inlet and slides with the wall of the air inlet. Thus, when not impacted by high-pressure gas, the lifting part can block the air inlet and thus close the gas channel. When impacted by high-pressure gas, the lifting part will rise and also act as a damping force to impede the high-pressure gas. Thus, when using the deep-buried rock excavation pressure relief device, the air intake component is placed inside the drilled rock borehole to support the borehole and prevent the borehole wall from collapsing. If the load balance inside the rock changes, high-pressure gas is ejected. The high-pressure gas pushes the lifting part, causing the lifting part to rise and no longer block the air intake hole, thus opening the gas channel. This allows the high-pressure gas to flow along the air intake hole, exhaust hole, pressure relief hole, and outlet pipe. It is damped by the push plate and the lifting part together. Finally, the high-pressure gas is slowly discharged to the outside from the outlet pipe. This allows the device to effectively discharge high-pressure gas to the outside and has a good buffering effect, improving the safety of deep-buried rock excavation. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the deep-buried rock excavation and pressure relief device according to an embodiment of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the air intake assembly of a pressure relief device for excavating medium-deep buried rock.

[0035] Figure 3 for Figure 1 Internal structure diagram of the sleeve of a pressure relief device for excavating medium-deep buried rock;

[0036] Figure 4 for Figure 1 Internal structure diagram of the air intake assembly of a pressure relief device for excavating medium-deep buried rock;

[0037] Figure 5 for Figure 1 Schematic diagram of the movable lifting component of a pressure relief device for excavating medium-deep buried rock;

[0038] Figure 6 for Figure 5 A schematic diagram of the structure for installing the movable lifting component to the cap head;

[0039] Figure 7 for Figure 1Partial structural diagram of the air intake assembly of a pressure relief device for excavating medium-deep buried rock;

[0040] Figure 8 for Figure 1 Another structural diagram of the air intake assembly of the pressure relief device for excavating medium-deep buried rock;

[0041] Figure 9 for Figure 1 A schematic diagram of the snap-fit ​​assembly of a pressure relief device for excavating medium-deep buried rock.

[0042] Figure 10 for Figure 9 Top view of the middle card connector assembly;

[0043] Figure 11 for Figure 9 Partial structural diagram of the card connector assembly;

[0044] Figure 12 for Figure 9 A schematic diagram of the structure of the fixing sleeve and the rotating sleeve of the middle card connector assembly;

[0045] Figure 13 for Figure 1 Another structural diagram of the air intake assembly of a pressure relief device for excavating medium-deep buried rock;

[0046] Figure 14 for Figure 13 A schematic diagram of the structure of the central support component;

[0047] Figure 15 for Figure 14 A partial structural diagram of the central support component;

[0048] Figure 16 for Figure 15 A schematic diagram of the limiting wheel and limiting rod of the middle support component.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1-Outlet pipe, 11-Pressure relief pipe, 12-Connecting pipe, 13-Metal pipe, 21-Sleeve, 211-Pressure relief hole, 212-Limiting sleeve, 212a-Ventilation hole, 213-First cylinder section, 214-Rubber buffer section, 215-Second cylinder section, 22-Cap, 221-Inlet hole, 23-Modible lifting component, 231-Push plate section, 231a-Exhaust hole, 232-Lifting section, 233-Connecting section, 233a-Spring, 3-Protective shell, 31-Fixing plate, 32-Through groove, 4-Rubber energy-absorbing cover, 5-Snap-fit ​​assembly, 51-Snap-fit ​​base, 511 - Mounting wall, 52- Snap-fit ​​part, 521- Snap-fit ​​connector, 522- Mating part, 53- Fixing sleeve, 54- Rotating sleeve, 541- Sliding part, 55- First motor, 551- Helical gear, 552- Helical gear ring, 553- First gear, 554- First gear ring, 6- Support assembly, 61- Mounting bracket, 611- Slide groove, 62- Support piece, 621- Sliding groove, 622- Limiting rod, 623- Sleeve body, 624- Slide rod, 63- Limiting wheel, 64- Threaded sleeve, 65- Threaded ring, 66- Second motor, 661- Second gear ring, 662- Second gear. Detailed Implementation

[0051] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] In the description of this invention, it should be understood that if the terms "upper", "lower", "front", "rear", "left", and "right" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, in the description of this invention, the X-axis in the accompanying drawings represents the horizontal direction and is designated as the left and right position, with the positive direction of the X-axis representing the left and the negative direction of the X-axis representing the right; the Y-axis in the accompanying drawings also represents the horizontal direction and is designated as the front and back position, with the positive direction of the Y-axis representing the front and the negative direction of the Y-axis representing the back; the Z-axis in the accompanying drawings represents the vertical direction, that is, the up and down position, with the positive direction of the Z-axis representing the top and the negative direction of the Z-axis representing the bottom. It should be noted that the aforementioned representations of the X-axis, Y-axis, and Z-axis are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0054] This invention provides a pressure relief device for excavating deeply buried rocks. Figures 1 to 16 This is an embodiment of the deep-buried rock excavation and pressure relief device provided by the present invention.

[0055] Please refer to Figures 1 to 8 The deep-buried rock excavation pressure relief device includes an air outlet pipe 1 and an air inlet assembly. The outlet of the air outlet pipe 1 is used to connect to the atmosphere. The air inlet assembly includes a sleeve 21, a cap 22, and a movable lifting component 23. The upper end of the sleeve 21 is provided with a pressure relief hole 211 that communicates with the inlet of the air outlet pipe 1. The cap 22 is located at the lower end of the sleeve 21. An air inlet hole 221 that communicates with the inner cavity of the sleeve 21 is formed inside the cap 22. The inner diameter of the air inlet hole 221 is smaller than the inner diameter of the inner cavity of the sleeve 21. The movable lifting component 23 includes a push plate part 231 and a lifting part 232. The push plate part 231 is located inside the sleeve 21 and slides with the inner wall of the sleeve 21. An exhaust hole 231a is opened on the push plate part 231. The lifting part 232 is located inside the air inlet hole 221 and slides with the hole wall of the air inlet hole 221. The push plate part 231 and the lifting part 232 are connected by a connecting part 233.

[0056] It should be noted that the number of air inlet 221, air outlet 231a, and pressure relief hole 211 can be one or more. When there are multiple holes, they are arranged around the axis of sleeve 21.

[0057] In the pressure relief device for deep-buried rock excavation, an air inlet 221 communicating with the inner cavity of the sleeve 21 is formed inside the cap 22, and an exhaust port 231a is provided on the push plate 231. The upper end of the sleeve 21 is provided with a pressure relief port 211 communicating with the inlet of the exhaust pipe 1. Thus, the air inlet 221, exhaust port 231a, pressure relief port 211, and exhaust pipe 1 can be connected to form a gas channel for high-pressure gas flow. Furthermore, the push plate 231 is located inside the sleeve 21 and slides against the inner wall of the sleeve 21. When high-pressure gas flows through the exhaust port 231a, it can drive the push plate part 231 to slide along the inner wall of the sleeve 21. The push plate part 231, in turn, plays a damping role in hindering the high-pressure gas. At the same time, the lifting part 232 is provided in the air inlet 221 and slides with the hole wall of the air inlet 221. Thus, when not impacted by high-pressure gas, the lifting part 232 can block the air inlet 221 and close the gas passage. When impacted by high-pressure gas, the lifting part 232 will rise and also play a damping role in hindering the high-pressure gas. Thus, when using the deep-buried rock excavation pressure relief device, the air intake component is placed inside the drilled rock borehole to support the borehole and prevent the borehole wall from collapsing. If the load balance inside the rock changes, high-pressure gas is ejected. The high-pressure gas pushes the lifting part 232, causing it to rise and no longer block the air intake hole 221, thus opening the gas passage. This allows the high-pressure gas to flow along the air intake hole 221, the exhaust hole 231a, the pressure relief hole 211, and the air outlet pipe 1. The gas is damped by the push plate part 231 and the lifting part 232. Finally, the high-pressure gas is slowly discharged to the outside from the outlet of the air outlet pipe 1. This allows the device to effectively discharge high-pressure gas to the outside and has a good buffering effect, improving the safety of deep-buried rock excavation.

[0058] Furthermore, a limiting sleeve 212 is fixedly provided on the inner wall of the sleeve 21, and the limiting sleeve 212 is provided with a guide hole and a vent hole 212a; the connecting part 233 is configured as a connecting rod, and the connecting rod passes through the guide hole.

[0059] It should be noted that the number of vent holes 212a can be one or more. When there are multiple vent holes 212a, they are arranged around the axis of the sleeve 21.

[0060] Since the limiting sleeve 212 is fixedly connected to the inner wall of the sleeve 21 and the limiting sleeve 212 is located on the periphery of the connecting rod, the limiting sleeve 212 can keep the connecting rod in the axial position inside the sleeve 21, so that when it is lifted by high pressure gas, the connecting rod can move up and down in the center inside the sleeve 21, thereby ensuring that the entire movable lifting part 23 moves up and down in the center inside the sleeve 21, further improving the depressurization effect of the device.

[0061] Furthermore, a spring 233a is sleeved around the periphery of the connecting rod. The upper end of the spring 233a is connected to the limiting sleeve 212, and the lower end is connected to the lifting part 232.

[0062] Specifically, the spring 233a is made of hard steel. By setting the spring 233a between the limiting sleeve 212 and the lifting part 232, when the lifting part 232 is subjected to the pushing force of high-pressure gas, the spring 233a can support and buffer the pushing force, improve the pressure relief capacity, and drive the lifting part 232 to reset.

[0063] Furthermore, the sleeve 21 includes a first cylindrical section 213, a rubber buffer section 214, and a second cylindrical section 215 connected sequentially from top to bottom. The rubber buffer section 214 can be made of rubber. When high-pressure gas is generated inside the rock, it impacts not only the lifting section 232 but also the cap 22, and is then transmitted to the second cylindrical section 215. By providing the rubber buffer section 214, the impact force on the second cylindrical section 215 can be buffered, thereby further improving the device's pressure relief capacity.

[0064] Please refer to Figure 1 , Figure 2 and Figure 8 The deep-buried rock excavation and pressure relief device also includes a protective shell 3, which covers the periphery of the first cylindrical section 213. Specifically, the upper end of the protective shell 3 is provided with a fixing plate 31, the first cylindrical section 213 is located inside the protective shell 3 and below the fixing plate 31, and the fixing plate 31 is provided with through holes that communicate with the outlet of the first cylindrical section 213 and the outlet of the air vent pipe 1 respectively. By providing the protective shell 3, the device is prevented from being damaged by rock fragments.

[0065] Furthermore, the rubber buffer part 214 has a first shoulder protruding from the outer side wall of the second cylinder part 215; the deep-buried rock excavation pressure relief device also includes a rubber energy-absorbing cover 4, which is sleeved on the periphery of the second cylinder part 215 and located between the first shoulder and the cap 22.

[0066] The rubber energy-absorbing cover 4 can be made of rubber. By setting the rubber energy-absorbing cover 4 between the first shoulder and the cap 22, when the cap 22 is impacted by high-pressure gas, the rubber energy-absorbing cover 4 can buffer and absorb energy, thereby improving the pressure relief capacity of the device.

[0067] Furthermore, the cap 22 is made of hardened steel. The hardened steel material of the cap 22 makes it less susceptible to damage within rock formations, facilitating the reuse of the device.

[0068] Please continue to refer to Figure 1 The air outlet pipe 1 includes a pressure relief pipe 11, a connecting pipe 12 connected to the pressure relief pipe 11, and a metal pipe 13 connected to the connecting pipe 12. The metal pipe 13 is telescopically oriented. The upper end of the sleeve 21 is connected to the lower end of the metal pipe 13.

[0069] Specifically, the metal pipe 13 is a metal corrugated pipe; the connecting pipe 12 includes a main connecting pipe 12 and multiple secondary connecting pipes 12, one end of the main connecting pipe 12 is connected to the pressure relief pipe 11, and one end of each of the multiple secondary connecting pipes 12 is connected to the other end of the main connecting pipe 12; multiple metal pipes 13 are provided, and one end of each of the multiple metal pipes 13 is connected to the other end of each of the multiple secondary connecting pipes 12; multiple air intake components are provided, and the upper end of the sleeve 21 of each of the multiple air intake components is connected to the other end of each of the multiple metal pipes 13.

[0070] By making the metal pipe 13 retractable, the air outlet pipe 1 can be extended and retracted to change its length, making it easier for the sleeve 21 to penetrate deeper into the rock layer.

[0071] Please refer to Figures 9 to 12 The deep-buried rock excavation and pressure relief device also includes a snap-fit ​​assembly 5, which includes a snap-fit ​​seat 51 and a snap-fit ​​member 52. The snap-fit ​​seat 51 is sleeved on the side wall of the sleeve 21, and the snap-fit ​​member 52 passes through the snap-fit ​​seat 51 radially along the sleeve 21 and is used to move in a direction away from or close to the sleeve 21. The end of the snap-fit ​​member 52 facing away from the sleeve 21 is provided with a snap-fit ​​connector 521.

[0072] It should be noted that the number of snap-fit ​​pieces 52 can be one or more. When there are multiple snap-fit ​​pieces 52, they are spaced apart along the circumference of the sleeve 21.

[0073] When the locking member 52 moves away from the sleeve 21 to a relatively far position, the locking member 521 can lock onto the inner wall of the rock borehole. Due to the large impact force of high-pressure gas, the air intake component inside the rock borehole is easily loosened by the impact of high-pressure gas. By inserting the locking member 52 through the locking seat 51 and allowing it to move in a direction away from or towards the sleeve 21, when the air intake component is placed inside the rock borehole, the locking member 52 moves away from the sleeve 21 to a relatively far position, so that the locking member 521 locks onto the inner wall of the rock borehole. The locking member 521 forms a fixed support, enhances the stability of the device, and prevents the device from loosening under the impact of high-pressure gas.

[0074] Furthermore, the snap-fit ​​base 51 is provided with a mounting wall 511; the snap-fit ​​assembly 5 also includes a fixed sleeve 53 and a rotating sleeve 54. The fixed sleeve 53 is provided in the snap-fit ​​base 51 and is located on the side of the mounting wall 511 near the sleeve 21. The axial direction of the fixed sleeve 53 extends radially along the sleeve 21. The rotating sleeve 54 is installed inside the fixed sleeve 53 and is used to rotate circumferentially along the fixed sleeve 53. The inner wall of the rotating sleeve 54 is provided with a sliding portion 541 extending axially therein. The snap-fit ​​member 52 is threadedly connected to the mounting wall 511 and passes through the rotating sleeve 54. The snap-fit ​​member 521 is located on the side of the mounting wall 511 away from the sleeve 21. The snap-fit ​​member 52 is provided with a mating portion 522 that slides with the sliding portion 541.

[0075] The general working process of the mounting wall 511, fixing sleeve 53, rotating sleeve 54, and snap-fit ​​component 52 is as follows: The rotating sleeve 54 rotates circumferentially within the fixing sleeve 53, causing the sliding part 541 to rotate, which in turn causes the mating part 522 to rotate, thereby causing the snap-fit ​​component 52 to rotate on the mounting wall 511. Through threaded transmission, the snap-fit ​​component 52 moves in directions away from and towards the sleeve 21. The snap-fit ​​component 52 can be driven by the cooperation of the mounting wall 511, fixing sleeve 53, and rotating sleeve 54, which is simple in structure and easy to use.

[0076] Furthermore, the sliding part 541 includes a retaining strip, and the mating part 522 includes a limiting groove. Two sliding parts 541 and two mating parts 522 can be provided. The two sliding parts 541 are spaced apart circumferentially along the rotating sleeve 54, and the two mating parts 522 are correspondingly provided with the two retaining strips. The retaining strip and the limiting groove slide together, which can both drive the locking member 52 and limit the locking member 52, preventing the locking member 52 from disengaging from the rotating sleeve 54.

[0077] In addition, the snap-fit ​​assembly 5 also includes a first driving member, which is connected to the rotating sleeve 54 and is used to drive the rotating sleeve 54 to rotate circumferentially along the fixed sleeve 53. The first driving member includes a first motor 55, which is connected to the rotating sleeve 54 through a helical gear 551 transmission structure.

[0078] Specifically, the helical gear 551 transmission structure includes a helical gear 551 and a helical gear ring 552 that mesh with each other, a first gear 553 and a first gear ring 554 that mesh with each other, the helical gear 551 is connected to the rotating sleeve 54, the first gear ring 554 is connected to the helical gear ring 552, and the first gear 553 is connected to the output shaft of the first motor 55.

[0079] Since the first motor 55 is connected to the rotating sleeve 54 through the transmission structure of the helical gear 551, the first motor 55 is not directly connected to the rotating sleeve 54, which makes it easier to arrange the first motor 55 and makes the device more compact.

[0080] In actual deep rock excavation, after one area is excavated, it is often necessary to move to the next nearby area for excavation. If the equipment placed in the borehole in the rock strata cannot be removed and reused after decompression, it will result in a huge waste of resources. Therefore, please refer to... Figures 13 to 16 The deep-buried rock excavation and pressure relief device also includes a support assembly 6, which includes a mounting frame 61 and a support member 62. The mounting frame 61 is located on the outside of the sleeve 21, and the lower end of the support member 62 is hinged to the mounting frame 61. The support member 62 is used to rotate relative to the mounting frame 61 so that the upper end of the support member 62 moves away from or towards the sleeve 21.

[0081] It should be noted that the number of support members 62 can be one or more. When there are multiple support members 62, they are arranged at intervals along the circumference of the sleeve 21.

[0082] When the upper end of the support member 62 moves away from the sleeve 21 to a relatively far position, the upper end of the support member 62 can support the inner wall of the rock borehole. In this way, by hinged the lower end of the support member 62 to the mounting frame 61, and the support member 62 is used to rotate relative to the mounting frame 61, before the pressure is released, the support member 62 rotates, causing the upper end of the support member 62 to move away from the sleeve 21 to a relatively far position, so that the upper end of the support member 62 supports the inner wall of the rock borehole and contacts the inner wall of the rock borehole, thus supporting the device and improving the stability of the device. This further prevents the device from loosening under the impact of high-pressure gas. After the pressure is released, the upper end of the support member 62 is reset, so that the upper end of the support member 62 is no longer in contact with the inner wall of the rock borehole, making it easy to remove the device from the rock borehole and facilitating the reuse of the device.

[0083] It should be noted that when the device is equipped with a support component 6, a protective shell 3 can also be provided on the periphery of the sleeve 21, and a through groove 32 is provided on the protective shell 3. The through groove 32 is correspondingly provided with the support component 62 so that the upper end of the support component 62 can extend out.

[0084] Furthermore, the support member 62 is inclined downward along the direction close to the sleeve 21; the support assembly 6 also includes a limiting wheel 63, which is provided on the mounting frame 61. The limiting wheel 63 is located on the side of the support member 62 close to the sleeve 21 and its wheel surface is in contact with the side wall surface of the support member 62. The limiting wheel 63 is used to move in the up and down direction relative to the mounting frame 61 to drive the support member 62 to rotate relative to the mounting frame 61.

[0085] By positioning the limiting wheel 63 on the side of the support member 62 close to the sleeve 21 and having its wheel surface in contact with the side wall of the support member 62, and by using the limiting wheel 63 to move vertically relative to the mounting frame 61, when the limiting wheel 63 moves downward, it can push the support member 62 to rotate outward, thereby moving the upper end of the support member 62 away from the sleeve 21, so that the upper end of the support member 62 supports the inner wall of the rock borehole, thus supporting the device. The structure is simple and easy to use.

[0086] Furthermore, the mounting bracket 61 is provided with vertically extending grooves 611, and the axle of the limiting wheel 63 slides in engagement with the grooves 611. The sliding engagement between the axle of the limiting wheel 63 and the grooves 611 guides the vertical movement of the limiting wheel 63, ensuring that the limiting wheel 63 can continuously push the support member 62 when moving downwards.

[0087] Furthermore, the support member 62 is provided with a vertically extending sliding groove 621, and a limiting rod 622 that slides and engages with the sliding groove 621. The limiting rod 622 is connected to the axle of the limiting wheel 63 via a telescopic sleeve. Specifically, the telescopic sleeve includes a sleeve body 623 and a sliding rod 624, with the sliding rod 624 slidably disposed within the sleeve body 623, and the two connected by a spring. By providing the sliding groove 621 and the limiting rod 622, the limiting rod 622 slides on the sliding groove 621, thereby limiting the position of the limiting wheel 63. Moreover, the telescopic sleeve can elastically extend and retract, ensuring that the limiting wheel 63 remains in contact with the support member 62.

[0088] The support assembly 6 also includes a threaded sleeve 64 and a threaded ring 65. The threaded sleeve 64 is fitted around the periphery of the sleeve 21 and is used to rotate around the periphery of the sleeve 21. The threaded ring 65 is threadedly connected to the periphery of the threaded sleeve 64 and connected to the axle of the limiting wheel 63.

[0089] Since the threaded ring 65 is threadedly connected to the threaded sleeve 64, and the threaded sleeve 64 can rotate around the sleeve 21, when the threaded sleeve 64 rotates, it can drive the threaded ring 65 to move up and down, thereby driving the limit wheel 63 to move up and down. The structure is simple and conducive to the compactness of the device.

[0090] Furthermore, the support assembly 6 also includes a second drive member, which is connected to the threaded sleeve 64 and is used to drive the threaded sleeve 64 to rotate circumferentially along the sleeve 21. The second drive member includes a second motor 66, which is connected to the threaded sleeve 64 through a gear ring transmission structure.

[0091] Specifically, the gear ring transmission structure includes a second gear ring 661 and a second gear 662 that mesh with each other. The second gear ring 661 is connected to the threaded sleeve 64, and the second gear 662 is connected to the output shaft of the second motor 66.

[0092] Since the second motor 66 is connected to the threaded sleeve 64 through a gear ring transmission structure, the second motor 66 is not directly connected to the threaded sleeve 64, which makes it easier to arrange the second motor 66 and makes the device more compact.

[0093] The deep-buried rock excavation and pressure relief device also includes a protective net, which is installed on the cap 22. This net blocks the falling rocks and prevents them from blocking or jamming the lifting section 232.

[0094] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected," "provided with," "located in," and "set" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0095] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0096] Furthermore, in the description of this invention, the term "embodiment" refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation that is included in at least one embodiment or implementation of the invention. In this invention, illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0097] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A pressure relief device for excavating deeply buried rock, characterized in that, The assembly includes an exhaust pipe (1), an intake assembly, and a support assembly (6). The outlet of the exhaust pipe (1) is connected to the atmosphere. The intake assembly includes a sleeve (21), a cap (22), and a movable lifting member (23). The upper end of the sleeve (21) is provided with a pressure relief hole (211) communicating with the inlet of the exhaust pipe (1). The cap (22) is located at the lower end of the sleeve (21). An intake hole (221) communicating with the inner cavity of the sleeve (21) is formed inside the cap (22). The inner diameter of the intake hole (221) is smaller than the inner diameter of the inner cavity of the sleeve (21). The movable lifting component (23) includes a push plate (231) and a lifting part (232). The push plate (231) is located inside the sleeve (21) and slides against the inner wall of the sleeve (21). The push plate (231) has an exhaust hole (231a). The lifting part (232) is located inside the air inlet (221) and slides against the wall of the air inlet (221). The push plate (231) and the lifting part (232) are connected by a connecting part (233). The support assembly (6) includes a mounting bracket (61) and a support member (62). 61) Located on the outside of the sleeve (21), the lower end of the support member (62) is hinged to the mounting bracket (61). The support member (62) is used to rotate relative to the mounting bracket (61) so that the upper end of the support member (62) moves away from or towards the sleeve (21). The support member (62) is inclined downward in the direction towards the sleeve (21). The support assembly (6) also includes a limiting wheel (63), which is located on the mounting bracket (61) and is positioned on the support member (62) near the sleeve. The support assembly (6) is located on one side of the sleeve (21) and its wheel surface is in contact with the side wall of the support member (62). The limiting wheel (63) is used to move in the up and down direction relative to the mounting bracket (61) to drive the support member (62) to rotate relative to the mounting bracket (61). The support assembly (6) also includes a threaded sleeve (64) and a threaded ring (65). The threaded sleeve (64) is sleeved on the circumference of the sleeve (21) and is used to rotate in the circumference of the sleeve (21). The threaded ring (65) is threaded to the circumference of the threaded sleeve (64) and connected to the wheel axle of the limiting wheel (63).

2. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The inner wall of the sleeve (21) is fixedly provided with a limiting sleeve (212), and the limiting sleeve (212) is provided with a guide hole and a vent hole (212a); The connecting part (233) is configured as a connecting rod, which passes through the guide hole.

3. The deep-buried rock excavation and pressure relief device according to claim 2, characterized in that, A spring (233a) is sleeved around the periphery of the connecting rod. The upper end of the spring (233a) is connected to the limiting sleeve (212), and the lower end is connected to the lifting part (232).

4. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The sleeve (21) includes a first cylindrical part (213), a rubber buffer part (214), and a second cylindrical part (215) connected in sequence from top to bottom.

5. The deep-buried rock excavation and pressure relief device according to claim 4, characterized in that, It also includes a protective shell (3), which covers the periphery of the first cylindrical portion (213).

6. The deep-buried rock excavation and pressure relief device according to claim 4, characterized in that, The rubber buffer portion (214) has a first shoulder protruding from the outer side wall of the second cylindrical portion (215); The deep-buried rock excavation pressure relief device also includes a rubber energy-absorbing cover (4), which is sleeved on the periphery of the second cylindrical part (215) and located between the first shoulder and the cap (22).

7. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The cap (22) is made of hard steel.

8. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The air outlet pipe (1) includes a pressure relief pipe (11), a connecting pipe (12) connected to the pressure relief pipe (11), and a metal pipe (13) connected to the connecting pipe (12), wherein the metal pipe (13) is extendable; The upper end of the sleeve (21) is connected to the lower end of the metal tube (13).

9. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, It also includes a snap-fit ​​assembly (5), which includes a snap-fit ​​base (51) and a snap-fit ​​member (52). The snap-fit ​​base (51) is sleeved on the side wall of the sleeve (21). The snap-fit ​​member (52) passes through the snap-fit ​​base (51) radially along the sleeve (21) and is used to move in a direction away from or close to the sleeve (21). The end of the snap-fit ​​member (52) opposite to the sleeve (21) is provided with a snap-fit ​​connector (521).

10. The deep-buried rock excavation and pressure relief device according to claim 9, characterized in that, The card holder (51) is provided with a mounting wall (511); The snap-fit ​​assembly (5) further includes a fixed sleeve (53) and a rotating sleeve (54). The fixed sleeve (53) is disposed on the snap-fit ​​base (51) and located on the side of the mounting wall (511) close to the sleeve (21). The axial direction of the fixed sleeve (53) extends radially along the sleeve (21). The rotating sleeve (54) is installed inside the fixed sleeve (53) and is used to rotate circumferentially along the fixed sleeve (53). The inner wall of the rotating sleeve (54) is provided with a sliding portion (541) extending axially thereon. The snap-fit ​​member (52) is threaded to the mounting wall (511) and passes through the rotating sleeve (54). The snap-fit ​​connector (521) is located on the side of the mounting wall (511) away from the sleeve (21). The snap-fit ​​member (52) is provided with a mating part (522) that slides with the sliding part (541).

11. The deep-buried rock excavation and pressure relief device according to claim 10, characterized in that, The sliding part (541) includes a retaining strip, and the mating part (522) includes a limiting groove.

12. The deep-buried rock excavation and pressure relief device according to claim 10, characterized in that, The snap-fit ​​assembly (5) further includes a first driving member, which is connected to the rotating sleeve (54) and is used to drive the rotating sleeve (54) to rotate circumferentially along the fixed sleeve (53).

13. The deep-buried rock excavation and pressure relief device according to claim 12, characterized in that, The first driving component includes a first motor (55), which is connected to the rotating sleeve (54) via a helical gear (551) transmission structure.

14. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The mounting bracket (61) is provided with a vertically extending slide groove (611), and the axle of the limiting wheel (63) is slidably engaged with the slide groove (611).

15. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The support member (62) is provided with a sliding groove (621) extending vertically, and a limiting rod (622) is provided on the sliding groove (621) to slide with it. The limiting rod (622) is connected to the wheel axle of the limiting wheel (63) through a telescopic sleeve.

16. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, The support assembly (6) further includes a second drive member connected to the threaded sleeve (64) for driving the threaded sleeve (64) to rotate circumferentially along the sleeve (21).

17. The deep-buried rock excavation and pressure relief device according to claim 16, characterized in that, The second driving component includes a second motor (66), which is connected to the threaded sleeve (64) via a gear ring transmission structure.

18. The deep-buried rock excavation and pressure relief device according to claim 1, characterized in that, It also includes a protective net, which is placed over the cap (22).

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