Roadway blasting tunneling device and using method thereof

Abstract

The invention discloses a roadway blasting tunneling device and a using method thereof, and relates to the technical field of roadway tunneling, the roadway blasting tunneling device comprises a protective frame, driving equipment and a drill bit, an auxiliary frame is fixedly connected to the middle of the front end of the protective frame, and the driving equipment is fixedly connected to the inner side of the protective frame; the drill bit is fixedly connected to the output end of the driving equipment through a coupler. Through the arranged auxiliary protection mechanism, a sliding ring abuts against the outer wall of a rock, meanwhile, an auxiliary frame pushes a protection pipe to synchronously advance along with a drill bit, at the moment, under the counter-acting force of the outer wall of the rock, the sliding ring slides on the surface of the protection pipe through pushing of a guide wheel along with the protection pipe, and at the moment, the joint of a connecting strip and a control strip warps up and is mutually folded; and meanwhile, the sliding ring is extruded and reset, so that the accuracy of the tunneling position of equipment and the stability of the equipment are enhanced, and the situation that rock or a soil layer collapses due to vibration generated by the equipment in the working process, a connecting rod of a drill bit is directly damaged, and the drill bit cannot be pulled out and continues to work is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of roadway tunneling, and specifically to a roadway blasting tunneling device and its usage method. Background Art

[0002] The drill and blast method has strong adaptability to geological conditions and low excavation costs, and is particularly suitable for the construction of hard rock roadways, broken rock roadways, and a large number of short roadways. Therefore, the drill and blast method is still a commonly used roadway excavation method at home and abroad. As an effective means of breaking rocks in a short time, blasting is widely used in various industries of national economic production. While bringing huge economic benefits to people, blasting technology also brings corresponding safety problems. Whether the blasting parameters are set reasonably is an important parameter affecting the blasting effect. Before blasting implementation, operators need to pre-evaluate the size of the blasting range, the size of the blocks generated by blasting, the change of the free surface during the blasting operation, etc.

[0003] Referring to the Chinese invention patent with the publication number CN 114109269 A and the name: A roadway tunneling blasting drilling automatic positioning device and its usage method, which relates to the technical field of rock tunneling. The present invention includes a drilling rig and drilling equipment. A moving frame is arranged on the drilling rig, a device frame is arranged on the front side of the moving frame, an installation frame is arranged on the device frame, and the drilling equipment is fixedly installed on the front side of the installation frame. The present invention uses a positioning probe installed on the drilling rig to detect and determine the position of the blasting drilling hole, transmits it to an external control device through a signal transceiver device, the control device analyzes the received signal, and then transmits an instruction to the driving device on the equipment, and then adjusts and determines the position where the drill bit on the drilling equipment is aligned, realizing the automatic positioning function. The left and right stable frames can provide stable buffering forces on the left and right when the drilling equipment is working, so that the drilling equipment is more stable during operation, improving the accuracy of the drilling blast holes, and providing a strong guarantee for the subsequent roadway tunneling and blasting work.

[0004] However, in the actual use process, there are still some problems:

[0005] During the tunneling of blasting holes, due to the change of the working environment, uncertain factors will appear in the rock layer during the specific drilling process. When there are cracks in the rock layer, long-term drilling may cause the collapse of some areas of the drilling hole, directly pressing or hitting the drill bit, which will cause the drill bit to be unable to withdraw quickly and cause direct damage, thus highlighting the insufficient protection of the existing drill bit. Secondly, a large amount of heat is generated during the long-term tunneling of the drill bit, and it cannot cool itself, resulting in serious wear of the drill bit affected by temperature and being not suitable for long-term use, increasing the replacement frequency. Summary of the Invention

[0006] Technical Problems to be Solved

[0007] The objective of the present invention is to make up for the deficiencies of the prior art and provide a roadway blasting and tunneling device and its usage method.

[0008] Technical solution

[0009] To achieve the above objective, the present invention provides the following technical solution: A roadway blasting and tunneling device includes a protective frame, a driving device, and a drill bit. An auxiliary frame is fixedly connected to the middle position at the front end of the protective frame, and the driving device is fixedly connected to the inner side of the protective frame. The drill bit is fixedly connected to the output end of the driving device through a coupling, and one end of the drill bit away from the driving device penetrates through the auxiliary frame and extends to its front end. An auxiliary protection mechanism is arranged on the outer side of the drill bit. A cooling mechanism is fixedly connected to the inner bottom end of the protective frame. A set of symmetrically arranged left and right chutes are vertically opened inside the protective frame, and an adjusting mechanism is slidably connected to the inside of the chutes. The bottom end of the adjusting mechanism is fixedly connected to a mounting frame.

[0010] The above-mentioned auxiliary protection mechanism includes a protective tube, a sliding ring, pulleys, a control bar, a connecting bar, and a return spring. The connecting bars are fixedly connected to the rear end of the protective tube in an annular array, and the control bar is movably connected to the other end of the connecting bar through a rotating shaft. The sliding ring is sleeved on the outer side of the protective tube. Several grooves are opened on the inner ring of the sliding ring. The pulleys are respectively movably connected to the inside of the grooves through rotating shafts, and the pulleys are closely attached to the outer side of the protective tube. The end of the control bar away from the connecting bar is respectively movably connected to the surface of the sliding ring. Several return springs are arranged in an annular array on the outer side of the protective tube. One end of the return spring is fixedly connected to one side of the sliding ring, and the other end of the return spring is fixedly connected to one end of the protective tube close to the connecting bar.

[0011] The above-mentioned protective tube is sleeved on the outer side of the drill bit. The front end of the drill bit is the same diameter as the protective tube, and the part of the drill bit located inside the protective tube is directly smaller than the inner diameter of the protective tube. The protective tube is fixedly connected to the outer side of the auxiliary frame.

[0012] The above-mentioned cooling mechanism includes a water tank, a water pump, a cooling tube, a connecting ring, a refrigeration sheet, and a cooling fan. The water pump is connected to the inside of the water tank through a pipeline. The cooling tube is fixedly connected to the water delivery end of the water pump. The cooling tube is arranged in a spiral rising manner. The connecting ring is fixedly connected to the inside of the cooling tube. The refrigeration sheets are fixedly connected to the outer side of the connecting ring in an annular array, and the heat dissipation ends of the refrigeration sheets face the inner side of the connecting ring. The cooling fan is fixedly connected to the front end of the cooling tube, and the water tank is located at the rear end of the cooling tube.

[0013] As described above, the cooling mechanism further includes a delivery pipe, an annular pipe, connecting pipes, and nozzles. There are several connecting pipes, which are fixedly connected in an annular array on the outer side of the annular pipe. The connecting pipes communicate with the inside of the annular pipe. The nozzles are fixedly connected to the ends of the connecting pipes away from the annular pipe. The bottom end of the annular pipe is fixedly connected and communicates with one end of the delivery pipe.

[0014] As described above, the other end of the delivery pipe penetrates through the auxiliary frame and is fixedly connected to the cooling pipe. The connecting pipes penetrate through the inner wall of the protective pipe, and the nozzles are located in the gap on the opposite side of the protective pipe and the drill bit. The water tank is fixedly connected to the inner bottom end of the protective frame, and the water pump is fixedly connected to the inner bottom end of the protective frame.

[0015] As described above, the adjusting mechanism includes a connecting seat, driving rods, adjusting blocks, support bars, shock-absorbing springs, and sliders. The sliders are respectively fixedly connected to one end of the connecting seat. The driving rods are respectively movably connected to the inside of the connecting seat through bearings. A set of symmetric threads are provided on the outer side of the driving rods. The adjusting blocks are symmetrically arranged and are movably connected to the outer side of the driving rods through the threads. The bottom ends of the support bars are respectively fixedly connected to the inner top ends of the adjusting blocks through rotating shafts, and the other ends of the support bars are all movably connected to the inner top end of the protective frame through rotating shafts. The shock-absorbing spring is fixedly connected to the middle position of the connecting seat, and the other end of the shock-absorbing spring is fixedly connected to the inner top end of the adjusting block.

[0016] As described above, the adjusting mechanism further includes a servo motor, sprockets, and a chain. The end of the driving rod away from the protective frame penetrates through the connecting seat and is fixedly connected to the axis of the sprocket. The two sprockets are connected by chain drive. The output end of the servo motor is fixedly connected to the bearing of one of the sprockets through a coupling.

[0017] As described above, the mounting frame is fixedly connected to the bottom end of the connecting seat, and the servo motor is fixedly connected to the surface of the mounting frame. The slider is slidably connected to the inside of the chute.

[0018] A method of using a roadway blasting and tunneling device includes the following steps:

[0019] S1. First, fix the entire device to the front end of a special vehicle for roadway work through the mounting frame. Then, according to the rock characteristics, determine whether physical cooling drilling can be carried out. If feasible, inject water into the water tank. Secondly, the water tank can be replaced with an air compressor for air cooling.

[0020] S2. During on-site operation, mark the blasting hole positions. Control the servo motor to drive the sprocket, and then drive another sprocket to rotate synchronously through the chain. At this time, the driving rod rotates to drive the adjusting block to move towards the opposite side. At the same time, the support bar jacks up the protective frame to lift it. At the same time, the chute moves synchronously with the protective frame along the chute, and the shock-absorbing spring is stretched until the drill bit is aligned with the tunneling position.

[0021] S3. Start the driving device to drive the drill bit to rotate. At the same time, start the water pump to pump out the water in the water tank and convey it successively through the cooling pipe, the conveying pipe, and the annular pipe to be split into the connecting pipes, and then spray out from the nozzles to quickly cool and dissipate heat from the drill bit. When the water flow passes through the cooling pipe, start the thermoelectric cooler to cool the outer wall of the cooling pipe, and at the same time start the cooling fan to quickly disperse the heat generated by the refrigeration.

[0022] S4. When the working vehicle pushes the drill bit to advance in the rock, the sliding ring abuts against the outer wall of the rock. At the same time, the auxiliary frame pushes the protective pipe to advance synchronously with the drill bit. At this time, under the reaction force of the outer wall of the rock, the sliding ring slides on its surface along with the advancement of the protective pipe through the guide wheel. At this time, the connection between the connecting bar and the control bar warps and folds with each other. At the same time, the sliding ring is squeezed and reset. After the blasting hole is drilled, when the drill bit is withdrawn, the return spring reacts on the sliding ring to make it slide to the initial position through the guide wheel.

[0023] Beneficial effects:

[0024] Compared with the prior art, the roadway blasting tunneling device and its using method have the following beneficial effects:

[0025] First, through the auxiliary protection mechanism set in the present invention, the sliding ring abuts against the outer wall of the rock. At the same time, the auxiliary frame pushes the protective pipe to advance synchronously with the drill bit. At this time, under the reaction force of the outer wall of the rock, the sliding ring slides on its surface along with the advancement of the protective pipe through the guide wheel. At this time, the connection between the connecting bar and the control bar warps and folds with each other. At the same time, the sliding ring is squeezed and reset. After the blasting hole is drilled, when the drill bit is withdrawn, the return spring reacts on the sliding ring to make it slide to the initial position through the guide wheel. Thereby, while enhancing the accuracy of the tunneling position of the equipment and enhancing the stability of the equipment, it is beneficial to prevent the rock or soil layer from collapsing due to the vibration generated by the equipment during the working process, directly damaging the connecting rod of the drill bit, resulting in the inability to pull out and continue working, and to a certain extent ensuring that the blasting hole during tunneling will not collapse due to the influence of the equipment.

[0026] Second, through the cooling mechanism set in the present invention, the water pump is used to pump out the water in the water tank and convey it successively through the cooling pipe, the conveying pipe, and the annular pipe to be split into the connecting pipes, and then spray out from the nozzles to quickly cool and dissipate heat from the drill bit. When the water flow passes through the cooling pipe, the thermoelectric cooler is started to cool the outer wall of the cooling pipe, and at the same time the cooling fan is started to quickly disperse the heat generated by the refrigeration. This is beneficial to quickly reduce the heat generated between the drill bit and the rock during tunneling, extend the service life of the drill bit, and improve the tunneling efficiency.

[0027] III. Through the provided adjustment mechanism of the present invention, the servo motor is controlled to drive the sprocket, and then another sprocket is driven to rotate synchronously through the chain. At this time, the driving rod rotates to drive the adjusting block to move towards the opposite side, and at the same time, the support bar jacks up the protective frame to lift it. Meanwhile, the sliding groove moves synchronously with the protective frame along the sliding groove, and the shock-absorbing spring is stretched, which is beneficial to conveniently adjust the height of the equipment, so that the drill bit can accurately and quickly align with the tunneling position, and at the same time enhance the support stability and improve the shock-absorbing effect of the equipment.

[0028] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 is a top three-dimensional structural schematic diagram of the present invention;

[0031] Figure 3 is a structural schematic diagram of the auxiliary protection mechanism of the present invention;

[0032] Figure 4 is of the present invention Figure 3 an enlarged structural schematic diagram of part A therein;

[0033] Figure 5 is a partial connection structural schematic diagram of the drill bit of the present invention;

[0034] Figure 6 is a connection structural schematic diagram of the protective tube of the present invention;

[0035] Figure 7 is a connection structural schematic diagram of the cooling mechanism of the present invention;

[0036] Figure 8 is a sectional connection structural schematic diagram of the connection seat of the present invention;

[0037] Figure 9 is a structural schematic diagram of the adjustment mechanism of the present invention.

[0038] In the figure: 1, protective frame; 2, driving device; 3, drill bit; 4, auxiliary frame; 5, auxiliary protection mechanism; 501, protection pipe; 502, sliding ring; 503, pulley; 504, control bar; 505, connecting bar; 506, return spring; 6, cooling mechanism; 601, water tank; 602, water pump; 603, cooling pipe; 604, connecting ring; 605, refrigeration chip; 606, cooling fan; 607, delivery pipe; 608, annular pipe; 609, connecting pipe; 6010, nozzle; 7, chute; 8, adjusting mechanism; 801, connecting seat; 802, driving rod; 803, adjusting block; 804, support bar; 805, shock absorption spring; 806, slider; 807, servo motor; 808, sprocket; 809, chain; 9, mounting bracket. Detailed implementation manner

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] As Figures 1-9 shown, the present invention provides a technical solution: a roadway blasting and tunneling device, including a protective frame 1, a driving device 2 and a drill bit 3. An auxiliary frame 4 is fixedly connected to the middle position at the front end of the protective frame 1, and the driving device 2 is fixedly connected to the inner side of the protective frame 1. The drill bit 3 is fixedly connected to the output end of the driving device 2 through a coupling, and one end of the drill bit 3 away from the driving device 2 penetrates through the auxiliary frame 4 and extends to its front end. An auxiliary protection mechanism 5 is arranged outside the drill bit 3. A cooling mechanism 6 is fixedly connected to the inner bottom end of the protective frame 1. A group of left and right symmetric chutes 7 are vertically opened inside the protective frame 1, and an adjusting mechanism 8 is slidably connected to the inside of the chutes 7. The bottom end of the adjusting mechanism 8 is fixedly connected to a mounting bracket 9.

[0041] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6As shown in the figure, the auxiliary protection mechanism 5 includes a protection tube 501, a sliding ring 502, pulleys 503, a control bar 504, a connecting bar 505 and a return spring 506. The connecting bar 505 is fixedly connected to the rear end of the protection tube 501 in a circular array, and the control bar 504 is movably connected to the other end of the connecting bar 505 through a rotating shaft. The sliding ring 502 is sleeved on the outside of the protection tube 501. There are several grooves on the inner ring of the sliding ring 502. The pulleys 503 are respectively movably connected to the inside of the grooves through rotating shafts, and the pulleys 503 are closely attached to the outside of the protection tube 501. One end of the control bar 504 away from the connecting bar 505 is movably connected to the surface of the sliding ring 502 through a rotating shaft. There are several return springs 506, which are arranged in a circular array on the outside of the protection tube 501. One end of the return spring 506 is fixedly connected to one side of the sliding ring 502, and the other end of the return spring 506 is fixedly connected to one end of the protection tube 501 close to the connecting bar 505. The protection tube 501 is sleeved on the outside of the drill bit 3. The front end of the drill bit 3 is the same as the diameter of the protection tube 501, and the diameter of the part of the drill bit 3 located inside the protection tube 501 is smaller than the inner diameter of the protection tube 501. The protection tube 501 is fixedly connected to the outside of the auxiliary frame 4.

[0042] By pressing against the outer wall of the rock with the sliding ring 502, at the same time, the auxiliary frame 4 pushes the protection tube 501 to advance synchronously with the drill bit 3. At this time, under the reaction force of the outer wall of the rock, the sliding ring 502 slides on the surface of the protection tube 501 through the guide wheels as the protection tube 501 advances. At this time, the connection part between the connecting bar 505 and the control bar 504 warps up and folds with each other. At the same time, the sliding ring 502 is squeezed and reset. After the blasting hole is drilled, when the drill bit 3 is withdrawn, the return spring 506 acts on the sliding ring 502 in the opposite direction, so that it slides to the initial position through the guide wheels. Thus, while enhancing the accuracy of the equipment tunneling position and enhancing the stability of the equipment, it is beneficial to prevent the rock or soil layer from collapsing due to the vibration generated by the equipment during the working process, directly damaging the connecting rod of the drill bit 3, resulting in the inability to pull out and continue working, and to a certain extent ensuring that the blasting hole will not collapse due to the influence of the equipment during tunneling.

[0043] As Figures 1-7As shown, the temperature reduction mechanism 6 includes a water tank 601, a water pump 602, a temperature reduction pipe 603, a connecting ring 604, a Peltier element 605 and a cooling fan 606. The water pump 602 is connected to the inside of the water tank 601 through a pipe. The temperature reduction pipe 603 is fixedly connected to the water delivery end of the water pump 602. The temperature reduction pipe 603 is arranged in a spiral upward manner. The connecting ring 604 is fixedly connected to the inside of the temperature reduction pipe 603. The Peltier element 605 is fixedly connected to the outside of the connecting ring 604 in an annular array. The heat dissipation end of the Peltier element 605 faces the inside of the connecting ring 604. The cooling fan 606 is fixedly connected to the front end of the temperature reduction pipe 603. The water tank 601 is located at the rear end of the heat dissipation and temperature reduction pipe 603. The temperature reduction mechanism 6 further includes a delivery pipe 607, an annular pipe 608, a connecting pipe 609 and a nozzle 6010. There are several connecting pipes 609 and they are fixedly connected to the outside of the annular pipe 608 in an annular array. The connecting pipe 609 is connected to the inside of the annular pipe 608. The nozzle 6010 is fixedly connected to the end of the connecting pipe 609 away from the annular pipe 608. The bottom end of the annular pipe 608 is fixedly connected and communicated with one end of the delivery pipe 607. The other end of the delivery pipe 607 penetrates through the auxiliary frame 4 and is fixedly connected to the temperature reduction pipe 603. The connecting pipe 609 penetrates through the inner wall of the protection pipe 501. The nozzle 6010 is located in the gap between the protection pipe 501 and the drill bit 3 on the opposite side. The water tank 601 is fixedly connected to the inner bottom end of the protection frame 1. The water pump 602 is fixedly connected to the inner bottom end of the protection frame 1.

[0044] The water in the water tank 601 is pumped out by the water pump 602 and is sequentially transported through the temperature reduction pipe 603, the delivery pipe 607 and the annular pipe 608 and is branched to the connecting pipe 609, and then sprayed out from the nozzle 6010 to quickly cool and dissipate heat from the drill bit 3. When the water flow passes through the temperature reduction pipe 603, the Peltier element 605 is started to cool the outer wall of the temperature reduction pipe 603. At the same time, the cooling fan 606 is started to quickly disperse the heat generated by the cooling, which is beneficial to quickly reduce the heat generated between the drill bit 3 and the rock during tunneling, extend the service life of the drill bit 3 and improve the tunneling efficiency.

[0045] As Figure 1 、 Figure 2 、 Figure 8 and Figure 9As shown, the adjustment mechanism 8 includes a connecting seat 801, a driving rod 802, an adjustment block 803, a support bar 804, a shock-absorbing spring 805 and a slider 806. The slider 806 is fixedly connected to one end of the connecting seat 801, the driving rod 802 is movably connected to the inside of the connecting seat 801 through a bearing, a group of symmetrical threads are opened on the outside of the driving rod 802, the adjustment block 803 is symmetrically arranged and movably connected to the outside of the driving rod 802 through threads, the bottom ends of the support bars 804 are fixedly connected to the internal top of the adjustment block 803 through a rotating shaft, and the other ends of the support bars 804 are movably connected to the internal top of the protective frame 1 through a rotating shaft, and the shock-absorbing spring 805 is fixedly connected to the internal top of the protective frame 1 through a rotating shaft. It is fixedly connected to the middle position of the connecting seat 801, and the other end of the shock-absorbing spring 805 is fixedly connected to the inner top of the adjusting block 803. The adjusting mechanism 8 also includes a servo motor 807, a sprocket 808 and a chain 809. The end of the driving rod 802 away from the protective frame 1 passes through the connecting seat 801 and is fixedly connected to the axis of the sprocket 808. The two sprockets 808 are connected by a transmission chain 809. The output end of the servo motor 807 is fixedly connected to the bearing of one of the sprockets 808 through a coupling. The mounting frame 9 is fixedly connected to the bottom end of the connecting seat 801, and the servo motor 807 is fixedly connected to the surface of the mounting frame 9. The slider 806 is slidably connected to the inside of the slide groove 7.

[0046] The sprocket 808 is driven by controlling the servo motor 807, and then the chain 809 drives another sprocket 808 to rotate synchronously. At this time, the driving rod 802 rotates to drive the adjustment block 803 to move to the opposite side. At the same time, the support bar 804 pushes the protective frame 1 upward to lift it. At the same time, the slide groove 7 moves synchronously with the protective frame 1 along the slide groove 7. The shock-absorbing spring 805 is stretched, which is conducive to facilitating the adjustment of the equipment height, so that the drill bit 3 can be accurately and quickly aligned with the excavation position, while enhancing the support stability and improving the shock-absorbing effect of the equipment.

[0047] Working principle: First, the entire device is fixedly installed at the front end of the special vehicle for roadway work through the mounting frame 9. Subsequently, according to the rock characteristics, it is judged whether physical cooling drilling can be carried out. If feasible, the water tank 601 is filled with water. Secondly, the water tank 601 can be replaced with an air compressor for air cooling. During on-site operation, mark the blasting drilling position, control the servo motor 807 to drive the sprocket 808, and then drive another sprocket 808 to rotate synchronously through the chain 809. At this time, the driving rod 802 rotates to drive the adjusting block 803 to move towards the opposite side. At the same time, the support bar 804 jacks up the protective frame 1 to lift it. At the same time, the chute 7 moves synchronously with the protective frame 1 along the chute 7, and the shock-absorbing spring 805 is stretched until the drill bit 3 is aligned with the tunneling position. Start the driving device 2 to drive the drill bit 3 to rotate. At the same time, start the water pump 602 to pump out the water in the water tank 601 and transport it sequentially through the cooling pipe 603, the conveying pipe 607, and the annular pipe 608 to be split into the connecting pipe 609, and then spray out from the nozzle 6010 to quickly cool and dissipate heat from the drill bit 3. When the water flow passes through the cooling pipe 603, start the thermoelectric cooler 605 to cool the outer wall of the cooling pipe 603, and at the same time start the cooling fan 606 to quickly disperse the heat generated by the refrigeration. When the working vehicle pushes the drill bit 3 to advance in the rock, the sliding ring 502 abuts against the outer wall of the rock. At the same time, the auxiliary frame 4 pushes the protective pipe 501 to advance synchronously with the drill bit 3. At this time, under the reaction force of the outer wall of the rock, the sliding ring 502 slides on its surface along with the advancement of the protective pipe 501 through the guide wheel. At this time, the connection between the connecting strip 505 and the control strip 504 warps and folds with each other. At the same time, the sliding ring 502 is squeezed and reset. After the blasting hole drilling is completed, when the drill bit 3 is withdrawn, the return spring 506 acts on the sliding ring 502 in the opposite direction to make it slide to the initial position through the guide wheel.

[0048] It should be noted that in this article, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixedly installed", "installed", "connected", "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel blasting excavation device, comprising a protective frame (1), a driving device (2) and a drill bit (3), characterized in that: The protective frame (1) is fixedly connected to an auxiliary frame (4) at the middle position of the front end, and the driving device (2) is fixedly connected to the inner side of the protective frame (1). The drill bit (3) is fixedly connected to the output end of the driving device (2) through a coupling, and the end of the drill bit (3) away from the driving device (2) passes through the auxiliary frame (4) and extends to its front end. An auxiliary protective mechanism (5) is arranged on the outer side of the drill bit (3). The inner bottom end of the protective frame (1) is fixedly connected to a cooling mechanism (6). A group of left-right symmetrical sliding grooves (7) are vertically opened inside the protective frame (1), and an adjustment mechanism (8) is slidably connected inside the sliding groove (7). The bottom end of the adjustment mechanism (8) is fixedly connected to a mounting frame (9).

2. A tunnel blasting excavation device according to claim 1, characterized in that: The auxiliary protection mechanism (5) comprises a protection tube (501), a sliding ring (502), a pulley (503), a control strip (504), a connecting strip (505) and a reset spring (506); the connecting strip (505) is fixedly connected to the rear end of the protection tube (501) in an annular array, and the control strip (504) is movably connected to the other end of the connecting strip (505) via a rotating shaft; the sliding ring (502) is sleeved on the outer side of the protection tube (501); the inner ring of the sliding ring (502) begins to have a plurality of grooves; the pulley (503) is respectively connected to the outer side of the protection tube (501) and ... The control strip (504) is movably connected to the inside of the groove through a rotating shaft, and the pulley (503) is closely attached to the outside of the protective tube (501). One end of the control strip (504) away from the connecting strip (505) is movably connected to the surface of the sliding ring (502) through a rotating shaft. A plurality of return springs (506) are provided and arranged in a ring shape on the outside of the protective tube (501). One end of the return spring (506) is fixedly connected to one side of the sliding ring (502), and the other end of the return spring (506) is fixedly connected to one end of the protective tube (501) close to the connecting strip (505).

3. A tunnel blasting excavation device according to claim 2, characterized in that: The protective tube (501) is sleeved on the outside of the drill bit (3), the front end of the drill bit (3) is consistent with the diameter of the protective tube (501), and the inner portion of the drill bit (3) is directly smaller than the inner diameter of the protective tube (501), and the protective tube (501) is fixedly connected to the outer side of the auxiliary frame (4).

4. The tunnel blasting excavation device according to claim 1, characterized in that: The cooling mechanism (6) comprises a water tank (601), a water pump (602), a cooling pipe (603), a connecting ring (604), a refrigeration fin (605) and a heat dissipation fan (606); the water pump (602) is connected to the inside of the water tank (601) through a pipeline; the cooling pipe (603) is fixedly connected to the water supply end of the water pump (602); the cooling pipe (603) is arranged in a spiral upward manner; the connecting ring (604) is fixedly connected to the inside of the cooling pipe (603); the refrigeration fin (605) is fixedly connected to the outside of the connecting ring (604) in a ring-shaped arrangement; the heat dissipation end of the refrigeration fin (605) faces the inside of the connecting ring (604); the heat dissipation fan (606) is fixedly connected to the front end of the cooling pipe (603); and the water tank (601) is located at the rear end of the heat dissipation and cooling pipe (603).

5. A tunnel blasting excavation device according to claim 4, characterized in that: The cooling mechanism (6) further comprises a delivery pipe (607), an annular pipe (608), a connecting pipe (609) and a nozzle (6010); the connecting pipe (609) is provided with a plurality of connecting pipes and is arranged in an annular shape and fixedly connected to the outer side of the annular pipe (608); the connecting pipe (609) is connected to the inside of the annular pipe (608); the nozzle (6010) is fixedly connected to one end of the connecting pipe (609) away from the annular pipe (608); and the bottom end of the annular pipe (608) is fixedly connected and mutually connected to one end of the delivery pipe (607).

6. A tunnel blasting excavation device according to claim 5, characterized in that: The other end of the delivery pipe (607) passes through the auxiliary frame (4) and is fixedly connected to the cooling pipe (603); the connecting pipe (609) passes through the inner wall of the protective pipe (501); and the nozzle (6010) is located in the gap on the opposite sides of the protective pipe (501) and the drill bit (3); the water tank (601) is fixedly connected to the inner bottom end of the protective frame (1); and the water pump (602) is fixedly connected to the inner bottom end of the protective frame (1).

7. The tunnel blasting excavation device according to claim 1, characterized in that: The adjusting mechanism (8) comprises a connecting seat (801), a driving rod (802), an adjusting block (803), a supporting bar (804), a shock absorbing spring (805) and a sliding block (806), wherein the sliding block (806) is fixedly connected to one end of the connecting seat (801), the driving rod (802) is movably connected to the inside of the connecting seat (801) through a bearing, a group of symmetrical threads are provided on the outside of the driving rod (802), the adjusting block (803) is symmetrically arranged and movably connected to the outside of the driving rod (802) through threads, the bottom ends of the supporting bars (804) are fixedly connected to the internal top end of the adjusting block (803) through a rotating shaft, and the other ends of the supporting bars (804) are movably connected to the internal top end of the protective frame (1) through a rotating shaft, the shock absorbing spring (805) is fixedly connected to the middle position of the connecting seat (801), and the other end of the shock absorbing spring (805) is fixedly connected to the internal top end of the adjusting block (803).

8. The tunnel blasting excavation device according to claim 7, characterized in that: The adjustment mechanism (8) also includes a servo motor (807), a sprocket (808) and a chain (809); one end of the drive rod (802) away from the protective frame (1) passes through the connecting seat (801) and is fixedly connected to the axis of the sprocket (808); the two sprockets (808) are connected by a transmission through the chain (809); and the output end of the servo motor (807) is fixedly connected to a bearing of one of the sprockets (808) through a coupling.

9. A tunnel blasting excavation device according to claim 8, characterized in that: The mounting frame (9) is fixedly connected to the bottom end of the connecting seat (801), and the servo motor (807) is fixedly connected to the surface of the mounting frame (9), and the sliding block (806) is slidably connected to the inside of the sliding groove (7).

10. A method for using a tunnel blasting excavation device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, the entire device is fixedly installed on the front end of the special vehicle for tunnel work through the mounting frame (9). Then, according to the characteristics of the rock, it is determined whether physical cooling and drilling can be performed. If feasible, the water tank (601) is filled with water. Secondly, the water tank (601) can be replaced with an air compressor for air cooling. S2. During the on-site operation, the blasting drilling position is marked, and the servo motor (807) is controlled to drive the sprocket (808), which then drives another sprocket (808) to rotate synchronously through the chain (809). At this time, the driving rod (802) rotates to drive the adjustment block (803) to move to the opposite side, and at the same time, the support bar (804) pushes the protective frame (1) upward, and at the same time, the slide groove (7) moves synchronously with the protective frame (1) along the slide groove (7), and the shock-absorbing spring (805) is stretched until the drill bit (3) is aligned with the excavation position. S3, start the driving device (2) to drive the drill bit (3) to rotate, and at the same time start the water pump (602) to extract the water from the water tank (601) and transport it in turn through the cooling pipe (603), the delivery pipe (607) and the annular pipe (608) to the connecting pipe (609), and then spray it out from the nozzle (6010) to quickly cool down the drill bit (3). When the water flows through the cooling pipe (603), the refrigeration plate (605) is started to cool the outer wall of the cooling pipe (603), and at the same time, the heat dissipation fan (606) is started to quickly dissipate the heat generated by the refrigeration. S4. When the working vehicle pushes the drill bit (3) into the rock, the sliding ring (502) presses against the outer wall of the rock, and at the same time, the auxiliary frame (4) pushes the protective tube (501) to advance synchronously with the drill bit (3). At this time, the sliding ring (502) is subjected to the reaction force of the outer wall of the rock, and slides on the surface of the protective tube (501) through the guide wheel. At this time, the connection between the connecting strip (505) and the control strip (504) is tilted and folded with each other, and at the same time, the sliding ring (502) is squeezed and reset. After the blasting hole is drilled, the drill bit (3) is pulled out, and at the same time, the reset spring (506) reacts on the sliding ring (502) to make it slide to the initial position through the guide wheel.

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