Roadway tunneling blasting device and method thereof

Abstract

The invention discloses a roadway tunneling blasting device and method, and particularly relates to the field of roadway construction, the blasting device comprises a trolley, a drilling mechanism is arranged on the trolley, the drilling mechanism comprises a drill rod capable of feeding, a drill bit is arranged at the end of the drill rod, and the drilling mechanism drills a shot hole in a rock mass by driving the drill bit; an expansion mechanism is arranged on the drill rod and comprises a first connecting base and a second connecting base, the first connecting base is installed at the end of the drill rod, and the drill bit is installed on the second connecting base. On the basis that the expansion structure is arranged, the scrap guiding mechanism is arranged, scraps between the drill bit and the expansion piece are taken away, the scraps are guided into the pull-back side of the expansion piece, residues of the scraps in a shot hole are further reduced, the actual effect of blasting construction is improved, and the blasting efficiency is improved. And on the basis that the fragments are brought out through the expansion structure, the problem of blasting errors caused by the fact that the explosive loading amount is reduced due to the fragments is further solved, and the construction quality is further improved.

Description

Technical Field

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

[0002] Roadway tunneling blasting refers to a construction method in which, during the construction of mines, tunnels or underground projects, in order to tunnel a roadway or a tunnel, rocks or soil layers are broken by means of explosion. This technology is usually applied to scenarios such as underground mining under hard rock conditions, construction of traffic tunnels, and water conservancy projects.

[0003] The construction process of roadway tunneling blasting mainly includes drilling, charging explosives, initiating the explosion, and cleaning. First, drill holes are arranged on the rock wall according to the designed drawings. These drill holes are called blasting holes, which are usually divided into cut holes, auxiliary holes, perimeter holes, etc. Holes with different functions play different roles in blasting. Charge explosives into the drilled holes. When charging, ensure that the explosives are evenly distributed, and use plugging materials (such as clay or sand) to plug the hole openings to improve the blasting efficiency. Finally, use detonating cords, detonators or electric detonators to detonate the explosives, and control the initiation time according to the blasting design sequence, so that each group of explosives detonates in sequence as planned, thereby achieving the best fragmentation effect. Roadway tunneling blasting utilizes the explosion energy of explosives to break rocks (or soil layers).

[0004] Currently, during the actual construction of inclined blast holes (such as when using conical cut, the required blast holes are distributed in a conical shape, so there will be inclined blast holes), for the blast holes with the bottom end inclined downward, debris is likely to accumulate downward and deposit at the bottom of the blast holes, which will affect the filling depth of the explosives when charging the explosives, thereby affecting the blasting construction effect. For this reason, in the prior art, an expansion structure is provided on the drill rod. After the drilling is completed, control the expansion structure to expand and contact the inner wall of the blast hole. When the drill rod is withdrawn from the blast hole, the debris in the blast hole can be taken out of the blast hole through the expansion structure. However, during the use of the drill bit, the drill bit generates high temperature (up to several hundred degrees Celsius) due to friction during drilling. If the expansion structure is close to the drill bit, the high temperature will accelerate the deterioration of rubber or elastic materials, affecting the subsequent pulling back to take out the debris. Therefore, a certain gap needs to be maintained between the drill bit and the expansion structure. Then, during the drilling process, some debris will accumulate between the drill bit and the expansion structure, making it difficult for this part of the debris to be taken out by the expansion structure, resulting in the problem that this part of the debris will affect the amount of explosive charged and thus affect the construction quality. Summary of the Invention

[0005] A roadway tunneling blasting device and method provided by the present invention aim to solve the following problem: During the use of the drill bit, when the drill bit drills, high temperatures (up to several hundred degrees Celsius) are generated due to friction. If the expansion structure is closely attached to the drill bit, the high temperature will accelerate the deterioration of rubber or elastic materials, affecting the subsequent pulling back to carry away debris. Therefore, a certain gap needs to be maintained between the drill bit and the expansion structure. Then, during the drilling process, some debris will accumulate between the drill bit and the expansion structure, making it difficult for this part of the debris to be carried out by the expansion structure, resulting in this part of the debris affecting the charge amount and thus affecting the construction quality.

[0006] To achieve the above object, the present invention provides the following technical solution: A roadway tunneling blasting device includes: a trolley, on which a drilling mechanism is provided. The drilling mechanism includes a feedable drill rod, and a drill bit is provided at the end of the drill rod. The drilling mechanism drills a blast hole in the rock mass by driving the drill bit. An expansion mechanism is provided on the drill rod. The expansion mechanism includes a first connection seat and a second connection seat. The first connection seat is installed at the end of the drill rod, the drill bit is installed on the second connection seat, a connecting rod is installed on the second connection seat, the connecting rod is slidably arranged in the drill rod, and an expansion member is installed between the first connection seat and the second connection seat. The expansion mechanism drives the second connection seat to move towards the drill rod to squeeze the expansion member, causing the expansion member to expand outward and fit against the inner wall of the blast hole. A chip guiding mechanism is also provided in the drill rod. The chip guiding mechanism includes a water supply assembly. A chip guiding port is provided on the expansion member, and a cavity is provided at the end of the drill rod. The drill rod is provided with a chip outlet communicating with the cavity. The water supply assembly is used to output water flow between the drill bit and the expansion member, and the chip is carried from the chip guiding port to the cavity by the water flow and discharged from the chip outlet to the pulling-back side of the expansion member.

[0007] In a preferred embodiment, the chip guiding mechanism further includes a water supply pipe. The water inlet end of the water supply pipe is communicated with the water supply assembly. The water supply pipe includes a hard pipe and a flexible pipe, the hard pipe and the flexible pipe are fixedly communicated, and a water outlet hole is provided on the second connection seat. The water outlet end of the water supply pipe is communicated with the water outlet hole, and the water outlet end of the water outlet hole points between the drill bit and the expansion member.

[0008] In a preferred embodiment, a plurality of limiting members are fixedly provided on the connecting rod. The limiting members are movably abutted against the inner wall of the expansion member, and the limiting members are used to limit the inward expansion of the expansion member.

[0009] In a preferred embodiment, a chip pushing mechanism is provided on the water supply pipe. The chip pushing mechanism includes a plurality of connecting pipes, all of the plurality of connecting pipes are communicated with the hard pipe, and the plurality of connecting pipes are evenly distributed in the circumferential direction of the hard pipe. A plurality of water outlet ports are provided on the expansion member, the plurality of water outlet ports are evenly distributed in the circumferential direction of the expansion member, and the plurality of connecting pipes are communicated with the corresponding water outlet ports.

[0010] In a preferred embodiment, an adjustment assembly one is further provided on the rigid pipe. The adjustment assembly one includes a rotatably arranged sleeve which is rotatably arranged on the rigid pipe. A plurality of side holes are formed on the surface of the sleeve, and the plurality of side holes are evenly distributed in the circumferential direction of the sleeve. A plurality of water through holes are formed on the surface of the rigid pipe, and the plurality of water through holes are evenly distributed in the circumferential direction. And the plurality of water through holes are fixedly communicated with the corresponding connecting pipes, and the plurality of water through holes are adapted to the corresponding side holes.

[0011] In a preferred embodiment, the adjustment assembly one further includes a guide groove which is formed on the surface of the sleeve. A fixed shaft is fixedly arranged inside the drill rod, and a spherical ball is fixedly arranged on the fixed shaft. The spherical ball is slidably arranged in the guide groove.

[0012] In a preferred embodiment, an adjustment assembly two is arranged inside the second connecting seat. The adjustment assembly two includes a movable baffle which is used to block the water outlet end of the water outlet hole before the expansion member expands.

[0013] In a preferred embodiment, the adjustment assembly two further includes a through hole which is formed on the second connecting seat. A connecting bar is slidably arranged inside the second connecting seat, and both ends of the connecting bar extend outside the second connecting seat and are fixedly connected with the corresponding baffle. A fixing rod is fixedly arranged at the end of the fixed shaft, and the fixing rod is slidably arranged inside the second connecting seat, and the fixing rod is fixedly connected with the connecting bar.

[0014] In a preferred embodiment, the drilling mechanism further includes a fixing frame which is arranged on the trolley, and a feeding assembly is further arranged on the fixing frame. The drill rod is installed at the output end of the feeding assembly.

[0015] A method for using a roadway tunneling blasting device includes the following steps: Step one: Control the trolley to make the drilling mechanism reach the corresponding area to be drilled on the rock mass, and adjust the drilling angle. Then drive the drill rod through the drilling mechanism to make the drill bit drill into the rock mass for drilling operation; Step two: After the drilling is completed, drive the expansion member to expand outward through the expansion mechanism and make it fit with the inner wall of the blast hole; Step three: Pass water flow between the drill bit and the expansion member through the chip guiding mechanism, and bring the debris between the drill bit and the expansion member into the cavity through the water flow and discharge it from the chip outlet to the pulling-back side of the expansion member; Step four: Then control the drill rod and the drill bit to be pulled back, and bring out the debris from the blast hole through the expansion member; Step five: Repeat the above steps one to four until all the blast holes are constructed; Step six: Load the medicine into the blast holes and detonate the medicine for blasting operation.

[0016] The beneficial effects of the present invention are as follows: Based on the setting of the expansion structure, the present invention further reduces the residue of debris in the borehole and improves the actual effect of blasting construction by setting a chip guiding mechanism to carry the debris between the drill bit and the expansion part and introduce the debris into the pulling-back side of the expansion part. On the basis of carrying out debris by the expansion structure, the problem of blasting error caused by the reduction of the charge amount due to debris is further reduced, and the construction quality is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional structure schematic diagram of the drilling mechanism of the present invention.

[0019] Figure 3 It is a schematic diagram of the drilling state of the present invention.

[0020] Figure 4 It is a structure schematic diagram of the expansion mechanism of the present invention.

[0021] Figure 5 It is a structure schematic diagram of the chip guiding mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the debris accumulation state of the present invention.

[0023] Figure 7 It is a structure schematic diagram of the chip pushing mechanism of the present invention.

[0024] Figure 8 is Figure 7 an enlarged view of the chip pushing mechanism in

[0025] Figure 9 It is a three-dimensional structure schematic diagram of the first adjusting component of the present invention.

[0026] Figure 10 It is a structure schematic diagram of the second adjusting component of the present invention.

[0027] Figure 11 For the present invention Figure 10 an enlarged view of the second adjusting component in

[0028] Figure 12 It is a three-dimensional structure schematic diagram of the second adjusting component of the present invention.

[0029] Figure 13 It is a method flow chart of the present invention.

[0030] The reference numerals are: 100, rock mass; 101, blast hole; 1, jumbo; 2, drilling mechanism; 21, fixing frame; 22, feeding assembly; 23, drill pipe; 24, drill bit; 3, expansion mechanism; 31, first connecting seat; 32, second connecting seat; 33, connecting rod; 34, expansion member; 341, chip guiding opening; 4, restricting member; 5, chip guiding mechanism; 51, water supply pipe; 511, rigid pipe; 5111, water passing hole; 512, flexible pipe; 52, water outlet hole; 53, cavity; 531, chip outlet; 6, chip pushing mechanism; 61, connecting pipe; 62, water outlet; 7, first adjusting assembly; 71, sleeve; 711, side hole; 712, guiding groove; 72, fixed shaft; 73, spherical ball; 8, second adjusting assembly; 81, through hole; 82, connecting strip; 83, baffle; 84, fixed rod. Detailed implementation manners

[0031] The present application will be further described in detail below with reference to the drawings. It is necessary to point out here that the following detailed implementation manners are only used to further illustrate the present application and cannot be understood as a limitation on the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0032] Refer to the attached drawings of the specification Figures 1 to 5 , a roadway tunneling blasting device, comprising: a jumbo 1, a drilling mechanism 2 is arranged on the jumbo 1, the drilling mechanism 2 includes a feedable drill pipe 23, a drill bit 24 is arranged at the end of the drill pipe 23, and the drilling mechanism 2 drills a blast hole 101 in the rock mass 100 by driving the drill bit 24; An expansion mechanism 3 is arranged on the drill pipe 23. The expansion mechanism 3 includes a first connecting seat 31 and a second connecting seat 32. The first connecting seat 31 is installed at the end of the drill pipe 23, the drill bit 24 is installed on the second connecting seat 32, a connecting rod 33 is installed on the second connecting seat 32, the connecting rod 33 is slidably arranged in the drill pipe 23, and an expansion member 34 is installed between the first connecting seat 31 and the second connecting seat 32. The expansion mechanism 3 drives the second connecting seat 32 to move towards the drill pipe 23 to squeeze the expansion member 34, so that the expansion member 34 expands outwards and fits with the inner wall of the blast hole 101; A chip guiding mechanism 5 is further arranged in the drill pipe 23. The chip guiding mechanism 5 includes a water supply assembly. A chip guiding opening 341 is formed on the expansion member 34, and a cavity 53 is formed at the end of the drill pipe 23. The drill pipe 23 is provided with a chip outlet 531 communicating with the cavity 53. The water supply assembly is used to output water flow between the drill bit 24 and the expansion member 34, and the chips are brought from the chip guiding opening 341 to the cavity 53 by the water flow and discharged from the chip outlet 531 to the pulling-back side of the expansion member 34.

[0033] It should be noted that the expansion member 34 is made of arc-shaped rubber material. When drilling, the expansion member 34 is in a relaxed state. A driving member is installed at one end of the connecting rod 33 away from the second connecting seat 32. The driving member can be a cylinder. The connecting rod 33 is driven by the cylinder to drive the second connecting seat 32 to move in the direction close to the first connecting seat 31, so that it squeezes the expansion member 34 and expands the expansion member 34 outward. The drill rod 23 can be fed by the hydraulic cylinder so that the drill bit 24 can penetrate into the rock mass 100 for drilling. The water supply component can be a high-pressure water pump. By conveying a high-speed water flow between the drill bit 24 and the expansion member 34, the water supply component can bring the debris between the drill bit 24 and the expansion member 34 into the cavity 53 under the drive of the water flow, and discharge it back into the blasthole 101 from the chip outlet 531. The number of chip guide ports 341 can be multiple, and the multiple chip guide ports 341 are evenly distributed in the circumferential direction of the expansion member 34. The pull-back side of the expansion member 34 refers to the main action surface of the expansion member 34 when cleaning debris.

[0034] The specific implementation scenario is as follows: by controlling the vehicle 1, the drilling mechanism 2 is made to reach the corresponding area to be drilled at the rock mass 100, and the drilling angle is adjusted, and then the drilling mechanism 2 drives the drill rod 23 to make the drill bit 24 drill into the rock mass 100 for drilling. After the drilling is completed, the second connecting seat 32 is first driven by the cylinder to move in the direction close to the first connecting seat 31, and the expansion member 34 is squeezed, so that the expansion member 34 is forced to expand outward, and the expansion member 34 is in contact with the inner wall of the blasthole 101, and then a high-speed water flow is delivered between the drill bit 24 and the expansion member 34 by a high-pressure water pump to make it Under the impact of the water flow, the debris between the drill bit 24 and the expansion member 34 is brought into the expansion member 34 through the chip guide port 341, and under the action of the water flow, the debris enters the cavity 53, and is discharged back to the blasthole 101 through the chip outlet port 531. Then, by controlling the pullback of the drill rod 23 and the drill bit 24, the debris can be brought out of the blasthole 101 through the expanded expansion member 34 during the pullback process, further reducing the residue of debris in the blasthole 101, improving the actual effect of the blasting construction, reducing the problem of blasting errors caused by reduced charging amount due to debris, and further improving its construction quality.

[0035] For further information, please refer to the attached manual. Figure 4 and Figure 5 The chip guiding mechanism 5 also includes a water supply pipe 51, the water inlet end of the water supply pipe 51 is connected to the water supply assembly, the water supply pipe 51 includes a hard pipe 511 and a soft pipe 512, the hard pipe 511 and the soft pipe 512 are fixedly connected, and a water outlet hole 52 is opened on the second connecting seat 32, the water outlet end of the water supply pipe 51 is connected to the water outlet hole 52, and the water outlet end of the water outlet hole 52 points to between the drill bit 24 and the expansion member 34.

[0036] It should be noted that the water delivery pipe 51 composed of the rigid pipe 511 and the flexible pipe 512 can avoid movement interference through the flexible pipe 512 when squeezing the expansion part 34. As the water delivery component of the high-pressure water pump, it can send high-pressure water flow into the water delivery pipe 51 and then into the water outlet hole 52 through the water delivery pipe 51, so that high-speed water flow can be ejected between the drill bit 24 and the expansion part 34 through the water outlet hole 52, and the debris between the drill bit 24 and the expansion part 34 can be carried away by the high-speed water flow, reducing the problem of blasting error caused by the residue of debris between the drill bit 24 and the expansion part 34.

[0037] It should also be noted that by introducing high-speed water flow between the drill bit 24 and the expansion part 34, not only can the debris be carried away, but also the drill bit 24 can be cooled during the drilling process.

[0038] It should be further noted that during the process of the water flow driving the debris to flow, the high-speed water flow can also wash the expansion part 34, causing the expansion part 34 to vibrate to a certain extent, reducing the problem of larger debris getting stuck in the chip guide port 341. Although the larger debris cannot be carried away through the chip guide port 341 and will still remain between the drill bit 24 and the expansion part 34, due to the size of the debris itself, it cannot pass through the chip guide port 341. However, during the process of pulling back the drill pipe 23 and the drill bit 24, due to the presence of the drill bit 24, the larger debris between the drill bit 24 and the expansion part 34 can still be carried out of the blast hole 101 through the drill bit 24. However, due to a certain gap between the drill bit 24 and the blast hole 101, only the larger debris can be carried out, and the smaller debris cannot be carried out.

[0039] Furthermore, referring to the attached Figure 4 to the specification, a plurality of limiting parts 4 are fixedly arranged on the connecting rod 33, and the limiting parts 4 are movably abutted against the inner wall of the expansion part 34. The limiting parts 4 are used to limit the inward expansion of the expansion part 34.

[0040] It should be noted that by setting the limiting parts 4, when driving the second connecting seat 32 to move towards the first connecting seat 31, due to the limitation of the limiting parts 4, the inward expansion of the expansion part 34 is avoided, ensuring that the expansion part 34 can expand outward.

[0041] In the above technical solution, it is necessary to first control the expansion of the expansion part 34 through the expansion mechanism 3, such as Figure 6As shown, when there is a lot of debris, since the blast hole 101 is inclined, the debris will accumulate at the bottom of the blast hole 101 under the action of gravity. At this time, if there is a large amount of debris in the blast hole 101 when the expansion member 34 expands, and there is a large debris blocking during the expansion process of the expansion member 34, then the expansion member 34 will directly abut against the debris, resulting in the expansion member 34 being unable to fully fit the inner wall of the blast hole 101. The presence of debris will hinder the close contact between the expansion member 34 and the inner wall, causing the expansion member 34 to be unable to carry the debris out of the blast hole 101. Even during the pulling-back process of the drill pipe 23 and the drill bit 24, when the expansion member 34 separates from the large debris, there are already many debris that have not been driven by the expansion member 34 to move along the blast hole 101, which will still affect the cleaning effect of the debris. Therefore, the present invention proposes a chip-pushing mechanism 6, which is used to spray water at the position where the expansion member 34 is about to contact the inner wall of the blast hole 101 when the expansion member 34 expands, so that the debris moves away from this position, ensuring that the expansion member 34 can contact and fit the inner wall of the blast hole 101. Specifically, refer to the attached Figure 7 and Figure 8 , a chip-pushing mechanism 6 is provided on the water delivery pipe 51. The chip-pushing mechanism 6 includes a plurality of connecting pipes 61. The plurality of connecting pipes 61 are all communicated with the rigid pipe 511, and the plurality of connecting pipes 61 are evenly distributed in the circumferential direction of the rigid pipe 511. A plurality of water outlets 62 are formed on the expansion member 34. The plurality of water outlets 62 are evenly distributed in the circumferential direction of the expansion member 34, and the plurality of connecting pipes 61 are communicated with the corresponding water outlets 62.

[0042] It should be noted that high-pressure water flow is conveyed into the water delivery pipe 51 through a high-pressure water pump, and water is sprayed at the position where the expansion member 34 is about to contact the inner wall of the blast hole 101 through the plurality of connecting pipes 61 and the plurality of water outlets 62, so that the debris moves away from this position, ensuring that the expansion member 34 can contact and fit the inner wall of the blast hole 101, and solving the problem that large debris will hinder the contact and fitting between the expansion member 34 and the inner wall of the blast hole 101 during expansion.

[0043] In the above technical solution, after spraying water at the position where the expansion member 34 is about to contact the inner wall of the blast hole 101 through the chip-pushing mechanism 6 and driving the expansion member 34 to expand so that the expansion member 34 fits the inner wall of the blast hole 101, at this time, the high-pressure water pump still needs to be in the working process so that the high-speed water flow can enter between the drill bit 24 and the expansion member 34 to achieve the effect of carrying the debris away from between the drill bit 24 and the expansion member 34. However, at this time, there will still be some high-speed water flow conveyed between the expansion member 34 and the blast hole 101 through the connecting pipes 61 and the water outlets 62. At this time, the water flow at this position is likely to affect the fitting between the expansion member 34 and the blast hole 101, resulting in the problem that it will affect the expansion member 34 carrying away the debris. Therefore, the present invention also provides an adjustment component 7, which is used to block the water inlet end of the connecting pipe 61 when the expansion member 34 fits the blast hole 101. Specifically, refer to the attached Figures 7 to 9, an adjusting component I 7 is further provided on the rigid pipe 511. The adjusting component I 7 includes a rotatably arranged sleeve 71 which is rotatably arranged on the rigid pipe 511. A plurality of side holes 711 are formed on the surface of the sleeve 71, and the plurality of side holes 711 are evenly distributed in the circumferential direction of the sleeve 71. A plurality of water through holes 5111 are formed on the surface of the rigid pipe 511, and the plurality of water through holes 5111 are evenly distributed in the circumferential direction of the rigid pipe 511. The plurality of water through holes 5111 are fixedly communicated with the corresponding connecting pipes 61, and the plurality of water through holes 5111 are adapted to the corresponding side holes 711. The adjusting component I 7 further includes a guiding groove 712 which is formed on the surface of the sleeve 71. A fixed shaft 72 is fixedly arranged in the drill rod 23, and a spherical ball 73 is fixedly arranged on the fixed shaft 72. The spherical ball 73 is slidably arranged in the guiding groove 712.

[0044] It should be noted that when the chip pushing mechanism 6 sprays water to the contact position between the expansion member 34 and the inner wall of the blast hole 101 and takes the larger debris away from this position, at this time, by driving the second connecting seat 32 to move closer to the first connecting seat 31, the expansion member 34 is extruded and expanded. At the same time, since the rigid pipe 511 is fixedly arranged with the second connecting seat 32 and the sleeve 71 is rotatably arranged on the rigid pipe 511, the sleeve 71 can be driven to move synchronously. And the spherical ball 73 is fixedly arranged. At this time, through the cooperation of the guiding groove 712 and the spherical ball 73, the sleeve 71 can be rotated, so as to release the communication state between the side holes 711 and the water through holes 5111 and block the water inlet end of the connecting pipe 61. As Figure 9 shown in the figure, this figure is a schematic diagram of the state of the sleeve 71 after rotation.

[0045] In the above technical solution, when the chip pushing mechanism 6 sprays water to the contact position between the expansion member 34 and the inner wall of the blast hole 101, there will still be part of the high-speed water flow directly passing through the water supply pipe 51 into the water outlet hole 52 and entering between the drill bit 24 and the expansion member 34 through the water outlet hole 52. At this time, there are two parts of high-speed water flow. One part of the high-speed water flow impacts on the contact position between the expansion member 34 and the inner wall of the blast hole 101, and the other part impacts between the drill bit 24 and the expansion member 34. Thus, it is easy because the two parts of water flow exist at the same time, and the water flow in two directions will interact with each other, generating a complex flow field, resulting in the debris may be pushed by the water flow to different areas of the blast hole 101, forming a scattered or piled state, affecting the cleaning effect of the debris. For this reason, the present invention also proposes an adjusting component II 8 for blocking the water outlet end of the water outlet hole 52 when spraying water to the contact position between the expansion member 34 and the inner wall of the blast hole 101. Specifically, refer to the attached Figures 10 to 12, an adjusting component II 8 is arranged in the second connecting seat 32. The adjusting component II 8 includes a movable baffle 83 which is used to block the water outlet end of the water outlet hole 52 before the expansion part 34 expands. The adjusting component II 8 further includes a through hole 81 which is opened on the second connecting seat 32. A connecting bar 82 is slidably arranged in the second connecting seat 32, and both ends of the connecting bar 82 extend outside the second connecting seat 32 and are fixedly connected with the corresponding baffle 83. A fixing rod 84 is fixedly arranged at the end of the fixed shaft 72. The fixing rod 84 is slidably arranged in the second connecting seat 32 and is fixedly connected with the connecting bar 82.

[0046] It should be noted that when spraying water at the contact position between the expansion part 34 and the inner wall of the blast hole 101, at this time, the baffle 83 blocks the water outlet hole 52. When driving the second connecting seat 32 to move closer to the first connecting seat 31 to squeeze the expansion part 34 and make the expansion part 34 expand, at this time, since the fixed shaft 72 is fixedly arranged, the baffle 83 can be kept in place, but the second connecting seat 32 is in a moving state, so that the baffle 83 can be released from blocking the water outlet end of the water outlet hole 52. That is, after the expansion part 34 expands, high-speed water flow can be output to the drill bit 24 and the expansion part 34 through the high-pressure water pump.

[0047] It should also be noted that through the above structural arrangement, before controlling the expansion of the expansion part 34, the water outlet end of the water outlet hole 52 is blocked, and the high-speed water flow only sprays out from the water outlet 62. After controlling the expansion of the expansion part 34, the water inlet end of the connecting pipe 61 is blocked, and the high-speed water flow only sprays out from the water outlet hole 52.

[0048] Further, referring to the attached drawings of the specification Figure 1 and Figure 2 , the drilling mechanism 2 further includes a fixing frame 21 which is arranged on the trolley 1, and a feeding component 22 is also arranged on the fixing frame 21. The drill pipe 23 is installed at the output end of the feeding component 22.

[0049] It should be noted that the feeding component 22 can be a hydraulic cylinder, and the drill pipe 23 and the drill bit 24 are driven to feed and the drill pipe 23 and the drill bit 24 are driven to retract by the hydraulic cylinder.

[0050] Referring to the attached drawings of the specification Figure 13 , a using method of a roadway tunneling blasting device includes the following steps: Step 1: Control the trolley 1 to make the drilling mechanism 2 reach the corresponding drilling area at the rock mass 100, adjust the drilling angle, and then drive the drill pipe 23 through the drilling mechanism 2 to make the drill bit 24 drill into the rock mass 100 for drilling operation; Step 2: After the drilling is completed, drive the expansion part 34 to expand outward through the expansion mechanism 3 and make it fit with the inner wall of the blast hole 101; Step 3: Pass water flow between the drill bit 24 and the expansion member 34 through the chip guiding mechanism 5. Bring the debris between the drill bit 24 and the expansion member 34 into the cavity 53 through the water flow, and discharge it to the pulling-back side of the expansion member 34 from the chip outlet 531; Step 4: Then control the pulling-back of the drill pipe 23 and the drill bit 24, and bring out the debris from the blast hole 101 through the expansion member 34; Step 5: Repeat the above Steps 1 to 4 until the construction of all blast holes 101 is completed; Step 6: Load the medicine into the blast hole 101 and detonate the medicine for blasting operation.

[0051] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A roadway tunneling blasting device, characterized in that, Comprising: A trolley (1), on which a drilling mechanism (2) is provided. The drilling mechanism (2) includes a feedable drill pipe (23), and a drill bit (24) is provided at the end of the drill pipe (23). The drilling mechanism (2) drills a blast hole (101) in a rock mass (100) by driving the drill bit (24). An expansion mechanism (3) is provided on the drill pipe (23). The expansion mechanism (3) includes a first connection seat (31) and a second connection seat (32). The first connection seat (31) is installed at the end of the drill pipe (23), the drill bit (24) is installed on the second connection seat (32), a connecting rod (33) is installed on the second connection seat (32), the connecting rod (33) is slidably arranged in the drill pipe (23), and an expansion member (34) is installed between the first connection seat (31) and the second connection seat (32). The expansion mechanism (3) drives the second connection seat (32) to move towards the drill pipe (23) to squeeze the expansion member (34), so that the expansion member (34) expands outwards and fits against the inner wall of the blast hole (101). A chip guiding mechanism (5) is further provided in the drill pipe (23). The chip guiding mechanism (5) includes a water supply assembly. A chip guiding port (341) is provided on the expansion member (34), and a cavity (53) is provided at the end of the drill pipe (23). The drill pipe (23) is provided with a chip outlet (531) communicating with the cavity (53). The water supply assembly is used to output water flow between the drill bit (24) and the expansion member (34). The chips are brought into the cavity (53) from the chip guiding port (341) by the water flow, and the chips are discharged from the chip outlet (531) to the retraction side of the expansion member (34).

2. The roadway tunneling blasting device according to claim 1, wherein: The chip guiding mechanism (5) further includes a water supply pipe (51). The water inlet end of the water supply pipe (51) is communicated with the water supply assembly. The water supply pipe (51) includes a hard pipe (511) and a flexible pipe (512). The hard pipe (511) and the flexible pipe (512) are fixedly communicated. An outlet hole (52) is provided on the second connection seat (32). The water outlet end of the water supply pipe (51) is communicated with the outlet hole (52), and the water outlet end of the outlet hole (52) points between the drill bit (24) and the expansion member (34).

3. The roadway tunneling blasting device according to claim 2, wherein: A plurality of limiting members (4) are fixedly provided on the connecting rod (33). The limiting members (4) are movably abutted against the inner wall of the expansion member (34). The limiting members (4) are used to limit the inward expansion of the expansion member (34).

4. A roadway tunneling blasting device according to claim 3, characterized in that: A chip pushing mechanism (6) is provided on the water supply pipe (51). The chip pushing mechanism (6) includes a plurality of connecting pipes (61). The plurality of connecting pipes (61) are all communicated with the hard pipe (511), and the plurality of connecting pipes (61) are evenly distributed in the circumferential direction of the hard pipe (511). A plurality of water outlet ports (62) are provided on the expansion member (34). The plurality of water outlet ports (62) are evenly distributed in the circumferential direction of the expansion member (34), and the plurality of connecting pipes (61) are communicated with the corresponding water outlet ports (62).

5. The roadway tunneling blasting device according to claim 4, characterized in that: An adjusting assembly I (7) is further provided on the rigid pipe (511). The adjusting assembly I (7) includes a rotatably arranged sleeve (71). The sleeve (71) is rotatably arranged on the rigid pipe (511). A plurality of side holes (711) are formed on the surface of the sleeve (71), and the plurality of side holes (711) are evenly distributed in the circumferential direction of the sleeve (71). A plurality of water through holes (5111) are formed on the surface of the rigid pipe (511), and the plurality of water through holes (5111) are evenly distributed in the circumferential direction of the rigid pipe (511). The plurality of water through holes (5111) are fixedly communicated with the corresponding connecting pipes (61), and the plurality of water through holes (5111) are adapted to the corresponding side holes (711).

6. The roadway tunneling blasting device according to claim 5, characterized in that: The adjusting assembly I (7) further includes a guiding groove (712). The guiding groove (712) is formed on the surface of the sleeve (71). A fixed shaft (72) is fixedly arranged in the drill rod (23). A spherical ball (73) is fixedly arranged on the fixed shaft (72). The spherical ball (73) is slidably arranged in the guiding groove (712).

7. The roadway tunneling blasting device according to claim 6, characterized in that: An adjusting assembly II (8) is arranged in the second connecting seat (32). The adjusting assembly II (8) includes a movable baffle (83). The baffle (83) is used for blocking the water outlet end of the water outlet hole (52) before the expansion member (34) expands.

8. A roadway tunneling blasting device according to claim 7, characterized in that: The adjusting assembly II (8) further includes a through hole (81). The through hole (81) is formed in the second connecting seat (32). A connecting bar (82) is slidably arranged in the second connecting seat (32). Both ends of the connecting bar (82) extend outside the second connecting seat (32) and are fixedly connected to the corresponding baffle (83). An end of the fixed shaft (72) is fixedly provided with a fixed rod (84). The fixed rod (84) is slidably arranged in the second connecting seat (32), and the fixed rod (84) is fixedly connected to the connecting bar (82).

9. The roadway tunneling blasting device according to claim 8, characterized in that: The drilling mechanism (2) further includes a fixed frame (21). The fixed frame (21) is arranged on the trolley (1). An advancing assembly (22) is further arranged on the fixed frame (21). The drill rod (23) is installed at the output end of the advancing assembly (22).

10. A method for using the roadway tunneling blasting device according to claim 9, characterized in that, Comprising the following steps: Step 1: Control the trolley (1) to make the drilling mechanism (2) reach the corresponding drilling area at the rock mass (100), adjust the drilling angle, and then drive the drill rod (23) through the drilling mechanism (2) to make the drill bit (24) drill into the rock mass (100) for drilling operation; Step 2: After the drilling is completed, drive the expansion member (34) to expand outward through the expansion mechanism (3) and make it fit with the inner wall of the blast hole (101); Step 3: Pass water flow between the drill bit (24) and the expansion member (34) through the chip guiding mechanism (5). The chip between the drill bit (24) and the expansion member (34) is brought into the cavity (53) by the water flow and discharged from the chip outlet (531) to the pulling-back side of the expansion member (34); Step 4: Then control the drill rod (23) and the drill bit (24) to pull back, and the chips are brought out of the blast hole (101) by the expansion member (34); Step Five: Repeat the above Step One to Step Four until all the blast holes (101) are constructed; Step Six: Load the medicine into the blast holes (101) and detonate the medicine for blasting operations.

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