Tunnel anchor rod construction drilling equipment

Abstract

The invention discloses drilling equipment for tunnel anchor rod construction. The drilling equipment comprises a drill bit, a drill rod, a spraying assembly and a brushing assembly. The drill bit is connected with the drill rod; the drill rod is connected with a driving source, and the driving source can drive the drill rod to rotate and axially move; the spraying assembly comprises a nozzle and a conveying pipe, the nozzle is arranged on the outer side of the drill rod, and the conveying pipe is connected with the nozzle; the brushing assembly comprises a brush, and the brush is arranged on the outer side of the drill rod. When the tunnel anchor rod construction drilling equipment is used, the inner wall of a hole can be effectively reinforced by spraying and brushing the cementing material on the hole wall during drilling, so that the hole collapse rate is greatly reduced, the drilling success rate is improved, and the construction progress is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and particularly relates to a drilling device for tunnel bolt construction. Background Art

[0002] Bolts are a core component in tunnel construction technology and play a very important role. They are usually made of reinforced concrete or steel pipe materials. Their main purpose is to inject reinforced concrete or cement slurry materials into the holes after drilling in the tunnel, forming an integrated structure with the tunnel wall surface, thereby enhancing the stability, support bearing capacity, and anti-deformation and cracking ability of the tunnel.

[0003] In the prior art, bolt drilling usually uses a rock drilling jumbo to drill holes in the inner wall of the tunnel. When drilling in a soft rock tunnel, due to the relatively broken surrounding rock mass, the traditional drilling method is prone to hole collapse and shrinkage, resulting in difficulty in inserting the bolt rod body and requiring re-drilling. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention proposes a drilling device for tunnel bolt construction, which can improve the problem of easy hole collapse during drilling.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: A drilling device for tunnel bolt construction includes a drill bit, a drill rod, a spraying assembly, and a brushing assembly;

[0006] The drill bit is connected to the drill rod;

[0007] The drill rod is connected to a driving source, and the driving source can drive the drill rod to rotate and move axially;

[0008] The spraying assembly includes a nozzle and a delivery pipe. The nozzle is arranged outside the drill rod, and the delivery pipe is connected to the nozzle;

[0009] The brushing assembly includes a brush, and the brush is arranged outside the drill rod.

[0010] Driven by the driving source, the drill rod drives the drill bit to rotate and advance, drilling holes in the rock wall. During the drilling process, the delivery pipe transports the quick-setting material to the nozzle, and it is sprayed on the hole wall through the nozzle. Subsequently, the brush spreads the quick-setting material evenly on the inner wall of the hole.

[0011] The beneficial effect of the above-mentioned drilling device for tunnel bolt construction is that by spraying and brushing the quick-setting material evenly on the hole wall during drilling, the inner wall of the hole can be effectively reinforced, thereby greatly reducing the hole collapse rate, improving the drilling success rate, and ensuring the construction progress.

[0012] Further, the driving source includes a motor and a hydraulic cylinder. The drill pipe and the motor are both movably arranged on the drill arm. The motor is connected to the drill pipe and can drive the drill pipe to rotate. The hydraulic cylinder is connected to the motor and can push the motor and the drill pipe to move on the drill arm.

[0013] The motor can drive the drill pipe and the drill bit to rotate. The hydraulic cylinder pushes the motor, the drill pipe and the drill bit to move, so as to drive the drill bit to rotate and advance, and drill holes in the rock wall.

[0014] Further, a sleeve is circumferentially arranged on the outer side of the drill pipe. The sleeve can move axially together with the drill pipe. The nozzle is arranged on the sleeve. A plurality of strip-shaped holes axially arranged are circumferentially formed in the sleeve. A groove is circumferentially formed in the outer wall of the drill pipe. The groove is undulated in a wave shape along the axial direction of the drill pipe.

[0015] The brushing assembly further includes a sliding rod. One end of the sliding rod is slidably connected in the groove, and the other end passes through the strip-shaped hole and is connected to the brush.

[0016] When the drill pipe moves axially, the sleeve also moves axially together. At the same time, the drill pipe will also rotate. When rotating, the groove drives the sliding rod to reciprocate in the strip-shaped hole, so as to drive the brush to reciprocate, and repeatedly brush the quick-setting material sprayed on the inner wall of the hole, so as to brush the quick-setting material evenly on the inner wall of the drill hole.

[0017] Further, a connecting rod and a sliding sleeve are also arranged on the sleeve. Two connecting rods are symmetrically arranged. The mutually close ends are both rotatably connected to the end of the sliding rod away from the groove. The mutually far ends are connected to the brush. The sliding sleeve is rotatably arranged on the sleeve. The connecting rod is slidably inserted in the sliding sleeve.

[0018] When the sliding rod reciprocates in the strip-shaped hole, it can drive the two connecting rods to rotate. When the connecting rods rotate, they drive the sliding sleeve to rotate and slide in the sliding sleeve, so as to drive the brush to reciprocate and rotate, and brush the quick-setting material on the inner wall of the hole.

[0019] Further, the sleeve is a rectangular sleeve. Two sets of connecting rods and sliding sleeves are provided and symmetrically arranged on both sides of the sleeve. The brush includes a brush plate and bristles. The brush plate is an arc-shaped plate and is connected to the two sets of connecting rods. The bristles are arranged on the brush plate.

[0020] Since the drill hole is a circular hole, the brush plate is an arc-shaped plate to fit the inner wall of the drill hole. By connecting the brush with the connecting rods on both sides of the sleeve, it has a good supporting effect and ensures the stability of the brush when rotating.

[0021] Further, two sets of brushing assemblies are provided, which are sequentially arranged axially on the drill pipe and the sleeve and are respectively located on different opposite sides of the sleeve.

[0022] The two painting assemblies can achieve full coverage of the inner wall of the drill hole, improve the effect of reinforcing the drill hole, and are respectively located at different positions to avoid interference.

[0023] Furthermore, it further includes a support assembly. The support assembly includes support pieces and support rods. The support pieces are arc-shaped pieces, and a plurality of them are arranged around the circumference of the drill pipe. They are connected to the sleeve through the support rods. The support rods are slidably inserted on the sleeve, and the support pieces are also connected to the sleeve through springs;

[0024] A cam is fixedly sleeved on the outer wall of the drill pipe, and the cam can push the support piece.

[0025] When the drill pipe rotates, it can push the support piece through the cam, so that the support piece supports against the inner wall of the drill hole. Subsequently, under the action of the spring, the support piece resets, so that it can contact the inner wall of the hole reciprocally to achieve a support effect and avoid cave-ins.

[0026] Furthermore, the support assembly, the spraying assembly, and the painting assembly are arranged in sequence from the drill bit towards the driving source.

[0027] First, contact the inner wall of the hole through the support assembly to prop up the positions where cave-ins may occur. Subsequently, the quick-setting material can be sprayed and spread evenly, thereby reinforcing the inner wall of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the specific embodiments will be briefly introduced below. In all the drawings, the components or parts do not necessarily have to be drawn according to the actual scale.

[0029] Figure 1 It is the front view of a tunnel bolt construction drilling device provided by an embodiment of the present invention;

[0030] Figure 2 It is Figure 1 a schematic diagram showing the connection of the drill bit, drill pipe, and driving source of a tunnel bolt construction drilling device as shown;

[0031] Figure 3 It is Figure 1 the side view of a painting assembly of a tunnel bolt construction drilling device as shown;

[0032] Figure 4 It is Figure 1 the side view of a support assembly of a tunnel bolt construction drilling device as shown;

[0033] Reference numerals:

[0034] 10 - Drill bit;

[0035] 20 - Drill pipe, 201 - Groove, 202 - Cam, 21 - Motor, 22 - Hydraulic cylinder, 23 - Sleeve, 231 - Slot;

[0036] 30 - Spraying assembly, 31 - Nozzle, 32 - Delivery pipe;

[0037] 40 - Painting assembly, 41 - Brush, 42 - Slide bar, 43 - Link rod, 44 - Slide sleeve;

[0038] 50 - Support assembly, 51 - Support plate, 52 - Support rod, 53 - Spring. Detailed implementation mode

[0039] The embodiments of the technical solutions of the present invention will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0040] Please refer to Figures 1 to 4 , the present invention provides a tunneling bolt construction drilling device, including a drill bit 10, a drill pipe 20, a spraying assembly 30 and a painting assembly 40. The drill bit 10 and the drill pipe 20 are used to drill holes in the tunnel rock wall. The spraying assembly 30 can spray a quick-setting material on the inner wall of the hole and brush it evenly through the painting assembly 40, thereby strengthening the hole wall.

[0041] Specifically, the drill bit 10 is connected to the drill pipe 20. The drill pipe 20 is connected to a driving source, which can drive the drill pipe to rotate and move axially. The rotation can be forward or reverse rotation, so as to adjust the forward and reverse rotation during drilling when the drill is stuck. The spraying assembly 30 includes a nozzle 31 and a delivery pipe 32. The nozzle 31 is arranged on the outside of the drill pipe 20, and the delivery pipe 32 is connected to the nozzle 31 and can deliver the quick-setting material to the nozzle 31. The painting assembly 40 includes a brush 41, and the brush 41 is arranged on the outside of the drill pipe 20.

[0042] Driven by the driving source, the drill pipe 20 drives the drill bit 10 to drill holes in the rock wall. During the drilling process, the delivery pipe 32 delivers the quick-setting material to the nozzle 31, and the nozzle 31 sprays the quick-setting material on the hole wall. Subsequently, the brush 41 brushes the quick-setting material evenly on the inner wall of the hole, thereby effectively strengthening the inner wall of the hole and greatly reducing the hole collapse rate.

[0043] Specifically, the driving source includes a motor 21 and a hydraulic cylinder 22. The motor 21 is movably arranged on the drill arm. The motor 21 is connected to the drill pipe 20 and can drive the drill pipe to rotate. The hydraulic cylinder 22 is connected to the motor 21 and can push the motor 21 and the drill pipe 20 to move on the drill arm. By driving the drill pipe 20 and the drill bit 10 to rotate with the motor 21 and pushing the motor 21, the drill pipe 20 and the drill bit 10 to move with the hydraulic cylinder 22, the drill bit 10 is driven to rotate and advance, and holes are drilled in the rock wall.

[0044] Specifically, in the drilling mode 0, there are two sets of brushing components 40, so a part of the sleeve is shown in an unsectioned state.

[0045] When the drill pipe 20 and the sleeve 23 move axially together, the drill pipe rotates self - driven by the motor 21. When rotating, the wavy groove 201 can drive the slide bar 42 to reciprocate in the strip - shaped hole 231, thereby driving the brush 41 to reciprocate, and repeatedly brushing the quick - setting material sprayed on the inner wall of the hole, so as to evenly brush the quick - setting material on the inner wall of the drill hole.

[0046] In this embodiment, the sleeve 23 is a rectangular sleeve. The sleeve 23 is also provided with a connecting rod 43 and a sliding sleeve 44. There are two symmetrically arranged connecting rods 43. The mutually approaching ends of the two are rotatably connected to the end of the slide bar 42 away from the groove 201, and the mutually distant ends are connected to the brush 41. The sliding sleeve 44 is rotatably arranged on the sleeve 23, and the connecting rod 43 is slidably inserted into the sliding sleeve 44. And there are two sets of connecting rods 43 and sliding sleeves 44, and they are symmetrically arranged on both sides of the sleeve 23. The brush 41 includes a brush plate and bristles. The bristles are arranged on the brush plate. The brush plate is an arc - shaped plate and is connected to the connecting rod 43 on one side of the two sets.

[0047] When the slide bar 42 reciprocates in the strip - shaped hole 231, it can drive the two connecting rods 43 to rotate. When the connecting rods 43 rotate, they drive the sliding sleeve 44 to rotate and slide in the sliding sleeve 44, thereby driving the brush 41 to reciprocally rotate and brush the quick - setting material on the inner wall of the hole. Since the drill hole is a circular hole, the brush plate is an arc - shaped plate to fit the inner wall of the drill hole. By connecting the connecting rods 43 on both sides of the sleeve 23 to the brush 41, it has a good supporting effect and ensures the stability of the brush 41 when rotating.

[0048] In addition, there are two sets of brushing components 40, which are arranged in sequence along the axial direction of the drill pipe 20 and the sleeve 23, and are respectively located on different opposite sides of the sleeve 23. As Figure 4 shown, after the two sets of brushing components 40 are combined, it can be seen from the side view that the inner wall of the drill hole is fully covered, improving the effect of strengthening the drill hole, and they are respectively located at different positions to avoid interference.

[0049] Specifically, it further includes a support component 50. The support component 50 includes a support piece 51 and a support rod 52. The support piece 51 is an arc - shaped piece, and there are multiple support pieces 51 arranged around the circumference of the drill pipe 20, and they are movably arranged on the sleeve 23 and can move radially along it. The support piece 51 is connected to the sleeve 23 through the support rod 52. The support rod 52 is slidably inserted into the sleeve 23 to play a limiting role. The support piece 51 is also connected to the sleeve 23 through a spring 53. A cam 202 is fixedly sleeved on the outer wall of the drill pipe 20, and the cam 202 can push the support piece 51.

[0050] When the drill pipe 20 rotates, it can push the support piece 51 through the cam 202, so that the support piece 51 abuts against the inner wall of the drill hole. Then, under the action of the spring 53, the support piece 51 resets, so that it can reciprocally contact the inner wall of the hole and support the inner wall of the hole to avoid cave - in of the hole.

[0051] The support assembly 50, the spraying assembly 30, and the brushing assembly 40 are sequentially arranged along the direction from the drill bit 10 to the driving source. First, the support assembly 50 contacts the inner wall of the hole. Especially at the positions where cave - in is likely to occur, the inner wall of the hole can be propped up. Then, the spraying assembly 30 sprays the quick - setting agent on the inner wall of the hole, and then the brushing assembly 40 spreads the quick - setting agent evenly, thereby strengthening the inner wall of the hole.

[0052] The working principle of the above - mentioned tunnel bolt construction drilling equipment is as follows: Driven by the motor 21 and the hydraulic cylinder 22, the drill pipe 20 drives the drill bit 10 to move axially and rotate self - rotatably to drill the rock wall, and at the same time the sleeve 23 also moves axially. Inside the drill hole, as the drill pipe 20 rotates, the cam 202 pushes the support piece 51 to move relative to the sleeve 23, so that it abuts against the inner wall of the hole to support the inner wall of the hole. Then the nozzle 31 sprays the inner wall of the hole, spraying the quick - setting agent on the inner wall of the hole. Under the rotation of the drill pipe 20, the slide bar 42 is driven to reciprocate, thereby driving the connecting rod 43 to rotate reciprocally, so that the brush 41 brushes the inner wall of the hole. Through the reciprocating brushing, the quick - setting material can be evenly coated on the inner wall of the hole to reinforce the entire drill hole.

[0053] When using the above - mentioned tunnel bolt construction drilling equipment, during drilling, it can first support the inner wall of the hole, then spray the quick - setting agent, and spread the quick - setting agent evenly on the inner wall of the hole, thereby effectively strengthening the inner wall of the hole, greatly avoiding cave - in of the hole, improving the success rate, and ensuring the smooth progress of the construction.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A tunnel anchor construction drilling device, characterized in that: Including drill bit, drill rod, spray assembly and brush assembly; The drill bit is connected to the drill rod; The drill rod is connected to a driving source, and the driving source can drive the drill rod to rotate and move axially; The injection assembly comprises a nozzle and a delivery pipe, wherein the nozzle is arranged on the outside of the drill rod, and the delivery pipe is connected to the nozzle; The brushing assembly comprises a brush, and the brush is arranged on the outside of the drill rod.

2. A tunnel anchor construction drilling equipment according to claim 1, characterized in that: The driving source includes a motor and a hydraulic cylinder. The drill rod and the motor are both movably arranged on the drill arm. The motor is connected to the drill rod and can drive the drill rod to rotate. The hydraulic cylinder is connected to the motor and can push the motor and the drill rod to move on the drill arm.

3. The tunnel anchor construction drilling equipment according to claim 1, characterized in that: A sleeve is circumferentially arranged on the outer side of the drill rod, and the sleeve can move axially together with the drill rod, and the nozzle is arranged on the sleeve; a plurality of strip holes opened axially are circumferentially arranged on the sleeve, and a groove is circumferentially arranged on the outer wall of the drill rod, and the groove is wavy along the axial direction of the drill rod; The painting brush assembly also includes a sliding rod, one end of which is slidably connected in the groove, and the other end of which passes through the strip hole and is connected to the brush.

4. The tunnel anchor construction drilling equipment according to claim 3, characterized in that: The sleeve is also provided with a connecting rod and a sliding sleeve. Two connecting rods are symmetrically provided, and the ends close to each other are rotatably connected to the end of the sliding rod away from the groove, and the ends away from each other are connected to the brush. The sliding sleeve is rotatably arranged on the sleeve, and the connecting rod is slidably inserted in the sliding sleeve.

5. The tunnel anchor construction drilling equipment according to claim 4, characterized in that: The sleeve is a rectangular sleeve, the connecting rod and the sliding sleeve are each provided with two groups and are symmetrically arranged on both sides of the sleeve, the brush comprises a brush plate and bristles, the brush plate is an arc-shaped plate and is connected to the two groups of connecting rods, and the bristles are arranged on the brush plate.

6. The tunnel anchor construction drilling equipment according to claim 5, characterized in that: The coating brush assembly is provided with two groups, which are sequentially arranged in the axial direction of the drill rod and the sleeve, and are respectively located on different opposite sides of the sleeve.

7. The tunnel anchor construction drilling equipment according to claim 3, characterized in that: It also includes a support assembly, the support assembly includes a support sheet and a support rod, the support sheet is an arc-shaped sheet, a plurality of which are arranged around the circumference of the drill pipe, and connected to the sleeve through the support rod, the support rod is slidably inserted on the sleeve, and the support sheet is also connected to the sleeve through a spring; The outer wall fixing sleeve of the drill rod is provided with a cam, and the cam can push the supporting sheet.

8. The tunnel anchor construction drilling equipment according to claim 7, characterized in that: The support assembly, the spray assembly and the brush assembly are arranged in sequence along the direction from the drill bit to the driving source.

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