Blasthole digging equipment for weak surrounding rock tunnel

Abstract

The utility model discloses hole digging equipment aiming at a weak surrounding rock tunnel shot hole, which relates to the technical field of hole digging equipment, and comprises a digging cylinder and a slag collecting box communicated with the right side of the digging cylinder, and further comprises a crushing part arranged on the digging cylinder; the quick replacing part is mounted on the slag collecting box; the negative pressure slag suction part is arranged on the slag collection box; the quick replacement part comprises a buckle assembly, and the buckle assembly is installed on the slag collecting box. The filtering assembly is arranged on the slag collecting box; the buckle assembly comprises two limiting blocks fixedly connected to the inner wall of the top of the slag collecting box. According to the utility model, the quick replacement part is arranged, so that the problems that when the conventional hole digging equipment is used, the filter plate of the negative-pressure slag suction component is inconvenient to disassemble and assemble, and the filter plate is blocked due to adhesion and accumulation of impurities after being used for a long time, so that the hole digging operation efficiency is influenced, and the continuous and stable operation of the equipment is difficult to guarantee are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of hole-drilling equipment, and in particular relates to a hole-drilling equipment for tunnels with weak surrounding rock. Background Technology

[0002] As tunnel engineering extends to complex geological conditions, the proportion of tunnels constructed in weak surrounding rock is constantly increasing. This type of surrounding rock is loose and broken, and is prone to collapse after drilling, resulting in a large amount of broken rock and soil accumulating in the blast hole, which cannot meet the construction requirements of subsequent explosive blasting. As the core equipment for cleaning collapsed blast holes and restoring their function, the efficiency and cleaning effect of tunnel blast hole cleaning equipment directly affect the tunnel construction progress and project quality. Therefore, efficient cleaning equipment is needed to clean collapsed blast holes.

[0003] However, existing hole-removing equipment is not convenient to disassemble and assemble the filter plate of the negative pressure slag suction component. After long-term use, the filter plate will be blocked due to the accumulation of impurities, which will affect the efficiency of hole-removing operations and make it difficult to ensure the continuous and stable operation of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a hole-drilling device for tunnels in weak surrounding rock. By setting up a quick-change part, it solves the problem that the filter plate of the negative pressure slag suction component is inconvenient to disassemble and assemble during use, and the filter plate will become blocked due to the accumulation of impurities after long-term use, which affects the efficiency of hole-drilling operation and makes it difficult to ensure the continuous and stable operation of the equipment.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a hole-cutting device for tunnels in weak surrounding rock, comprising a crushing section, a cutting cylinder, and a slag collection box. Both the crushing section and the slag collection box are mounted on the cutting cylinder. The slag collection box includes:

[0007] A quick-change unit, the quick-change unit including a snap-fit ​​assembly and a filter assembly, the filter assembly being snapped into the snap-fit ​​assembly;

[0008] The snap-fit ​​assembly includes a limiting block and at least two locking blocks. The limiting block is fixedly disposed within the slag collection box relative to the locking blocks. The locking blocks are slidably connected to the limiting block and symmetrically arranged on the outer periphery of the filter assembly. A connecting block is provided on the locking block, and a protrusion is fixedly connected to the end of the connecting block away from the locking block. The protrusion is slidably connected to a slide rod, and the slide rod is fixed within the slag collection box. A pressing element is adapted between the two opposing protrusions. Under the squeezing action of the pressing element, the two protrusions move away from each other on the slide rod.

[0009] In some embodiments, the pressing member includes a pressing rod and the second protrusion, one end of the pressing rod is connected to the second protrusion, and the other end extends away from the second protrusion to the outside of the slag collection box; the two ends of the second protrusion are respectively in contact with and connected to the two first protrusions.

[0010] Furthermore, the end of the first protrusion that contacts the second protrusion is a hemispherical or semi-circular arc surface; the end of the second protrusion has an inclined or arc surface that can be tangent to the hemispherical or semi-circular arc surface.

[0011] In some embodiments, the snap-fit ​​assembly further includes an elastic reset member disposed between two oppositely disposed connecting blocks, or disposed between the connecting block and the inner wall of the slag collection box, which can drive the connecting block to automatically reset after movement.

[0012] Furthermore, the elastic reset component includes a spring damper, and the spring damper is covered by a telescopic protective cover.

[0013] In some embodiments, the filter assembly includes a placement frame and a filter plate, the placement frame being fixed inside the slag collection box for placing the filter plate; the locking block is engaged with the outer wall of the filter assembly to confine the filter plate within the placement frame.

[0014] Furthermore, the placement frame has a placement groove below it, and the filter plate is accommodated in the placement groove.

[0015] Furthermore, the limiting block is fixedly disposed on the inner wall of the slag collection box or on the outer wall of the placement frame.

[0016] In some embodiments, a negative pressure slag suction unit is also included, which is disposed on the slag collection box.

[0017] Furthermore, the negative pressure slag suction unit includes an air duct connected to the slag collection box, the air outlet direction of the air duct being consistent with the vertical direction of the filter assembly; a funnel-shaped pipe is connected to the air outlet end of the air duct, and a fan is installed on the inner wall of the funnel-shaped pipe.

[0018] This utility model has the following beneficial effects:

[0019] 1. By setting up a quick replacement section, when the filter plate becomes clogged and needs to be replaced or cleaned, first open the partition door of the slag collection box, press the lever to drive the second protrusion to squeeze the two first protrusions, causing the connecting block to slide along the slide rod, thereby driving the two locking blocks to move away from each other. At this time, the spring damper is stretched and the telescopic protective cover extends. After the locking blocks are disengaged from the filter plate, the filter plate can be taken out for processing. During installation, place the filter plate into the placement slot of the placement frame, release the lever, the spring damper retracts and resets, and drives the locking blocks to re-lock the bottom of the filter plate, completing the replacement. Its significance lies in the cooperation between the buckle assembly and the filter assembly to achieve quick disassembly and assembly of the filter plate, avoiding filter plate clogging from affecting the efficiency of the cleaning operation, and ensuring the continuous and stable operation of the equipment.

[0020] 2. By setting up a negative pressure slag suction section, during operation, the blower of the synchronous crushing section is started. The blower creates a negative pressure environment in the slag collection box through the bucket-shaped pipe and air duct. The surrounding rock waste slag cut and crushed by the crushing section enters the slag collection box through the scoop under the action of negative pressure suction. The waste slag is intercepted by the filter plate of the filter assembly, while the air is discharged through the filter plate, air duct and bucket-shaped pipe. After the operation is completed, the blower is turned off and the hinged partition door can be opened to clean the waste slag in the slag collection box. Its significance lies in using the negative pressure principle to achieve rapid collection of waste slag, so that the scooping and waste slag collection are carried out simultaneously, which greatly improves the operation efficiency.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the front sectional structure of the present invention;

[0024] Figure 2 This is a partial cross-sectional view of the crushing section of this utility model;

[0025] Figure 3 This is a partial cross-sectional view of the quick-change part of this utility model;

[0026] Figure 4 This is a partial cross-sectional view of the buckle assembly of this utility model;

[0027] Figure 5 This is an exploded view of the filter assembly of this utility model;

[0028] Figure 6 This is a schematic diagram of the overall structure of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Crushing section; 111. Scoop; 112. Support; 113. Motor; 114. Rotating shaft; 115. Spiral blade; 2. Quick change section; 21. Buckle assembly; 211. Limiting block; 212. Locking block; 213. Connecting block; 214. Protrusion one; 215. Slide rod; 216. Press rod; 217. Protrusion two; 218. Telescopic protective cover; 219. Spring damper; 22. Filter assembly; 221. Placement frame; 222. Placement slot; 223. Filter plate; 3. Negative pressure slag suction section; 311. Slag collection box; 312. Air duct; 313. Bucket-shaped pipe; 314. Fan; 315. Partition door. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-6 As shown, this embodiment provides a hole-cutting device for tunnels in weak surrounding rock, including a crushing section 1, a cutting cylinder 111, and a slag collection box 311. Both the crushing section 1 and the slag collection box 311 are mounted on the cutting cylinder 111. The slag collection box 311 includes:

[0033] Quick-change unit 2 includes a snap-fit ​​assembly 21 and a filter assembly 22, with the filter assembly 22 snapped into the snap-fit ​​assembly 21.

[0034] The snap-fit ​​assembly 21 includes a limiting block 211 and at least two snap-fit ​​blocks 212. The limiting block 211 is fixedly disposed in the slag collection box 311 relative to the snap-fit ​​blocks 212. The snap-fit ​​blocks 212 are slidably connected to the limiting block 211 and are symmetrically arranged on the outer periphery of the filter assembly 22. A connecting block 213 is provided on the snap-fit ​​block 212. A protrusion 214 is fixedly connected to the end of the connecting block 213 away from the snap-fit ​​block 212. The protrusion 214 is slidably connected to a slide rod 215. The slide rod 215 is fixed in the slag collection box 311. A pressing element is adapted between the two oppositely disposed protrusions 214. Under the squeezing action of the pressing element, the two protrusions 214 move away from each other on the slide rod 215.

[0035] In this embodiment, as Figure 2As shown, the crushing unit 1 includes a bracket 112 fixedly connected to the inner wall of the scoop cylinder 111. A motor 113 is fixedly connected to the inner wall of the bracket 112. The output shaft of the motor 113 is fixedly connected to a rotating shaft 114 via a coupling. A spiral blade 115 is fixedly connected to the outer wall of the rotating shaft 114. The outer wall of the rotating shaft 114 is rotatably connected to the bracket 112. The motor 113 can be controlled automatically by using a program set in the control panel and inputting relevant parameters as needed. This control method can be implemented using existing technologies, such as PLCs.

[0036] In this embodiment, multiple sets of protrusions 214 can be provided. Each set of protrusions 214 is arranged relative to each other to form a structure with clamping or locking function. The clamping or locking structure is unfolded by using the pressing member to drive the sliding movement of the protrusions 214. This allows for the quick disassembly and replacement of the filter assembly 22 by relying on a purely mechanical structure without the need for contact with the electric setting, which is convenient for cleaning and maintenance.

[0037] In this embodiment, the pressing component includes a pressing rod 216 and a second protrusion 217. One end of the pressing rod 216 is connected to the second protrusion 217, and the other end extends away from the second protrusion 217 to the outside of the slag collection box 311. Both ends of the second protrusion 217 are respectively in contact with two first protrusions 214. Pressing the pressing rod 216 will drive the first protrusions 214 to move. The movement of the first protrusions 214 will drive the locking block 212 connected to it via the connecting block 213 to move as a whole. The end of the first protrusion 214 that contacts the second protrusion 217 is a hemispherical or semi-circular arc surface; the end of the second protrusion 217 has an inclined surface or arc surface that can be tangent to the hemispherical or semi-circular arc surface. By employing a spherical or arc-shaped protrusion 214 and a protrusion 217 with a slope or arc that can be tangent to a hemispherical or semi-circular arc surface, frictional force is reduced, allowing a smaller force applied to the push rod 216 to drive the protrusion 214 to move. That is, the contact surface between the protrusion 217 and the protrusion 214 is a gradually changing surface. The moving distance of the protrusion 214 depends on the slope of the slope and the curvature of the arc on the protrusion 217. The specific values ​​are conventional techniques in the art and will not be elaborated here.

[0038] In this embodiment, the latching assembly 21 further includes an elastic reset member, which is disposed between two opposing connecting blocks 213, or between the connecting block 213 and the inner wall of the slag collection box 311, and can drive the connecting block 213 to automatically reset after movement. In this embodiment, the elastic reset member can be any one or any combination of conventional materials in the art, such as telescopic springs, rubber springs, metal springs, air springs (airbags), polyurethane elastomers, etc., and its position is not limited, as long as it can realize the reset movement of the connecting block 213. Figure 3As shown, the elastic reset component of this application is illustrated by spring damper 219 as an example. Spring damper 219 is wrapped with telescopic protective cover 218. Spring damper 219 is located between two oppositely arranged connecting blocks 213, so that connecting blocks 213 can be reset without manual reset after the pressing component is applied. At the same time, after reset, the filter assembly 22 can be firmly clamped based on the pre-tightening force of spring damper 219. Telescopic protective cover 218 can extend synchronously with spring damper 219, thus protecting spring damper 219.

[0039] In this embodiment, the filter assembly 22 includes a placement frame 221 and a filter plate 223. The placement frame 221 is fixed inside the slag collection box 311 and is used to place the filter plate 223. A locking block 212 is engaged with the outer wall of the filter assembly 22 to confine the filter plate 223 within the placement frame 221. The placement frame 221 has a placement groove 222 below it, in which the filter plate 223 is accommodated. In this embodiment, the placement groove 222 can be of any shape based on the shape of the filter plate 223, as long as it can be adapted to the shape of the filter plate 223. In addition, in this application, the placement groove 222 is located below the placement frame 221, so that when the locking block 212 is opened, the filter plate 223 can fall under its own weight, which facilitates the operator's handling.

[0040] In some embodiments, the limiting block 211 can be fixedly set on the inner wall of the slag collection box 311 or on the outer wall of the placement frame 221. The limiting block 211 is set to facilitate the sliding movement of the locking block 212 along it and ensure that the locking block 212 can move stably along its axial direction.

[0041] The hole-drilling equipment for tunnels in weak surrounding rock in this embodiment also includes a negative pressure slag suction unit 3, which is installed on the slag collection box 311. The negative pressure slag suction unit 3 includes an air duct 312 connected to the slag collection box 311. The air outlet direction of the air duct 312 is consistent with the vertical direction of the filter component 22. A bucket-shaped pipe 313 is connected to the air outlet end of the air duct 312. A fan 314 is installed on the inner wall of the bucket-shaped pipe 313. The negative pressure principle is used to realize the rapid collection of waste residue, so that hole drilling and waste residue collection are carried out simultaneously, which greatly improves the work efficiency.

[0042] A specific working process in this embodiment is as follows: The operator aligns the front end of the scoop 111 with the location of the collapsed blast hole in the soft surrounding rock tunnel to be constructed, and starts the motor 113 of the crushing unit 1. The motor 113 drives the rotating shaft 114 to rotate on the support 112 through the coupling. The spiral blades 115 on the outer wall of the rotating shaft 114 rotate to cut and crush the broken rock and soil in the collapsed blast hole. At the same time, the blower 314 of the negative pressure slag suction unit 3 is started. The blower 314 forms a negative pressure ring in the slag collection box 311 through the bucket-shaped pipe 313 and the air pipe 312. In the surrounding rock waste crushed by the spiral blade 115, the waste enters the slag collection box 311 through the scooping cylinder 111 under negative pressure suction. After entering the slag collection box 311, the waste is blocked by the filter plate 223 of the filter assembly 22 and is trapped inside the slag collection box 311. The air is discharged through the filter plate 223, the air duct 312 and the bucket-shaped pipe 313, completing the synchronous operation of blasting and waste collection. After the blasting operation is completed, the motor 113 of the crushing section 1 is turned off first. After the spiral blade 115 stops rotating, the blower 314 is turned off. After opening the partition door 315, clean the soil and slag inside the slag collection box 311. When the filter plate 223 is clogged and needs to be replaced or cleaned, open the partition door 315 on the front side of the slag collection box 311 to expose the internal filter assembly 22. Press the lever 216 of the quick replacement part 2. The lever 216 drives the second protrusion 217 to squeeze the two first protrusions 214. The two first protrusions 214 push the connecting block 213 to slide along the slide rod 215, causing the two locking blocks 212 to move away from each other under the guidance of the limiting block 211. During this process, the spring damper 219 is pulled. Extend the telescopic protective cover 218 simultaneously. After the two locking blocks 212 are completely disengaged from the bottom of the filter plate 223, remove the clogged filter plate 223 for cleaning or replacement. Place the cleaned filter plate 223 or the new filter plate 223 into the placement slot 222 of the placement frame 221, ensuring that the filter plate 223 is in contact with the inner wall of the placement slot 222. Release the push rod 216, and the spring damper 219 retracts and resets. Through the connecting block 213, the two locking blocks 212 move closer to each other and re-lock the bottom of the filter plate 223, completing the replacement of the filter plate 223.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for soft rock tunnel hole drilling, characterized in that, It includes a crushing section (1), a scooping cylinder (111), and a slag collection box (311), wherein the crushing section (1) and the slag collection box (311) are both disposed on the scooping cylinder (111), and the slag collection box (311) includes: The quick-change part (2) includes a snap-fit ​​assembly (21) and a filter assembly (22), wherein the filter assembly (22) is snapped into the snap-fit ​​assembly (21). The snap-fit ​​assembly (21) includes a limiting block (211) and at least two snap-fit ​​blocks (212). The limiting block (211) is fixedly disposed in the slag collection box (311) relative to the snap-fit ​​blocks (212). The snap-fit ​​blocks (212) are slidably connected to the limiting block (211) and symmetrically arranged on the outer periphery of the filter assembly (22). A connecting block (213) is provided on the snap-fit ​​block (212). A protrusion (214) is fixedly connected to one end of the connecting block (213) away from the snap-fit ​​block (212). The protrusion (214) is slidably connected to a slide rod (215). The slide rod (215) is fixed in the slag collection box (311). A pressing member is adapted between the two oppositely disposed protrusions (214). Under the squeezing action of the pressing member, the two protrusions (214) move away from each other on the slide rod (215).

2. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 1, characterized in that, The pressing component includes a pressing rod (216) and the second protrusion (217). One end of the pressing rod (216) is connected to the second protrusion (217), and the other end extends away from the second protrusion (217) to the outside of the slag collection box (311). The two ends of the second protrusion (217) are respectively connected to the two first protrusions (214).

3. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 2, characterized in that, The end of the first protrusion (214) that contacts the second protrusion (217) is a hemispherical or semi-circular arc surface; the end of the second protrusion (217) has an inclined surface or arc surface that can be tangent to the hemispherical or semi-circular arc surface.

4. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 1, characterized in that, The buckle assembly (21) also includes an elastic reset member, which is disposed between two oppositely disposed connecting blocks (213) or between the connecting block (213) and the inner wall of the slag collection box (311), and can drive the connecting block (213) to automatically reset after movement.

5. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 4, characterized in that, The elastic reset component includes a spring damper (219), and the spring damper (219) is covered by a telescopic protective cover (218).

6. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 1, characterized in that, The filter assembly (22) includes a placement frame (221) and a filter plate (223). The placement frame (221) is fixed inside the slag collection box (311) and is used to place the filter plate (223). The locking block (212) is engaged with the outer wall of the filter assembly (22) to restrict the filter plate (223) inside the placement frame (221).

7. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 6, characterized in that, The placement frame (221) has a placement groove (222) below it, and the filter plate (223) is accommodated in the placement groove (222).

8. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 6, characterized in that, The limiting block (211) is fixedly installed on the inner wall of the slag collection box (311) or on the outer wall of the placement frame (221).

9. The hole cleaning device for soft surrounding rock tunnel borehole according to claim 1, characterized in that, It also includes a negative pressure slag suction unit (3), which is installed on the slag collection box (311).

10. A hole-cutting device for tunnels in weak surrounding rock according to claim 9, characterized in that, The negative pressure slag suction unit (3) includes an air duct (312) connected to the slag collection box (311), the air outlet direction of the air duct (312) is consistent with the vertical direction of the filter assembly (22); a bucket-shaped pipe (313) is connected to the air outlet end of the air duct (312), and a fan (314) is installed on the inner wall of the bucket-shaped pipe (313).

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