Portable pneumatic hand-cranking drilling machine

Abstract

The utility model relates to the technical field of coal mine tunnel drilling, in particular to a portable pneumatic hand-cranking drilling machine which comprises a bracket, a pneumatic drilling machine is installed above the bracket in a sliding mode, a power mechanism for driving the pneumatic drilling machine to move is arranged at one end of the bracket, a frame is arranged at the other end of the bracket, and a door-shaped frame is installed on the frame. Hooks are installed on the two sides of the n-shaped frame, walking wheels are installed at the bottom of the bracket through a connecting frame, and a supporting rod is obliquely arranged at the bottom of the other end of the bracket. The anchor net is hooked by the two hooks, a constructor steps on the square frame and manually rotates the handle to drive the pneumatic drilling machine to be pushed towards the drilling direction, and then drilling can be conducted easily; all work can be completed by only two persons during machine moving, machine supporting and drilling, compared with a traditional handheld drilling mode, the labor intensity can be remarkably reduced, half of labor cost is saved, manual holding is not needed during drilling, and the accident that people are hurt by reaction torque is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine roadway drilling, in particular to a portable pneumatic hand drill. BACKGROUND

[0002] In the process of coal mining, drilling operation is a crucial work link, which is widely used in coal roadway, half coal roadway coal side anchor rod support, water and gas exploration and blasthole construction and other aspects. Coal roadway, half coal roadway coal side anchor rod support plays a key role in maintaining the stability of the roadway and ensuring the safety of coal mining. By drilling holes in the coal side and installing anchor rods, the bearing capacity of the coal side can be effectively enhanced to prevent collapse and deformation. At the same time, in the process of coal mining, accurate detection of the distribution of harmful gases such as water and gas in the coal seam is crucial to prevent safety accidents. Drilling operation is an important means to realize water and gas exploration, and relevant information inside the coal seam can be obtained through drilling to provide important basis for subsequent mining work. In addition, in the coal mine blasting operation, blastholes need to be drilled in the coal seam or rock to load explosives and realize efficient mining operation.

[0003] The existing pneumatic handheld drill used in the coal mine roadway has a heavy weight, which needs to be held by three or four people with both hands and propelled by manpower to drill holes, which not only increases the labor intensity of workers and labor cost, but also may cause injury accidents when the reverse torque occurs in the case of drill jamming. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a portable pneumatic hand drill to solve the problems of high labor intensity, high labor cost and possible injury accidents caused by reverse torque in the case of drill jamming mentioned in the background.

[0005] To achieve the above technical purpose, the utility model provides the following technical scheme: a portable pneumatic hand drill, comprising a bracket, a pneumatic drill machine is slidably installed above the bracket, a power mechanism for driving the pneumatic drill machine to move is arranged at one end of the bracket, a frame is arranged at the other end of the bracket, a door-shaped frame is installed on the frame, hooks are installed on both sides of the door-shaped frame, walking wheels are installed on the bottom of the bracket through an extendable connecting frame, and an extendable supporting rod is obliquely arranged at the bottom of the other end of the bracket.

[0006] Further, a sliding rod is installed on the top of the bracket, the pneumatic drill machine is slidably installed on the sliding rod through a sliding block, the power mechanism comprises a handle, a protective box, a chain wheel one, a chain wheel two and a chain arranged between the chain wheel one and the chain wheel two, the chain wheel one is installed on the bracket, the chain wheel two is installed in the protective box through a rotating shaft one, a driven bevel gear is arranged on the rotating shaft one, the driven bevel gear is meshed with a driving bevel gear, a rotating shaft two is arranged on the driving bevel gear, and one end of the rotating shaft two penetrates through the protective box and is connected with the handle.

[0007] Further, the bottom of the support rod is provided with a support plate, and one side of the support plate is slidably provided with a square frame.

[0008] Further, the bottom of the support plate is provided with a plurality of protrusions.

[0009] Further, the top of the frame is provided with a guide sleeve.

[0010] Further, both sides of the frame are provided with sleeves, and the door-shaped frame is sleeved on the sleeves through the frame, a plurality of limiting holes are formed in the door-shaped frame and the sleeves, and a limiting pin is arranged in the limiting hole.

[0011] Compared with the prior art, the utility model has the advantages that: the two hooks are hooked on the anchor net, the construction personnel steps on the square frame, manually rotates the handle, drives the pneumatic drilling machine to advance in the direction of the drilling hole, and the drilling hole can be easily drilled; only two people are needed to complete all the work of moving the machine, supporting the machine and drilling the hole, compared with the traditional handheld drilling method, the labor intensity can be significantly reduced, half of the labor cost can be saved, and the drilling machine does not need to be manually held, so that the accidents caused by the counter-torque are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the overall structure schematic view of the utility model;

[0013] Figure 2 is the overall structure schematic view of the utility model Figure 1 is the top view structure schematic view of the utility model;

[0014] Figure 3 is the cross section structure schematic view of the power mechanism of the utility model.

[0015] In the drawing, 1, bracket; 2, pneumatic drilling machine; 3, power mechanism; 31, handle; 32, protection box; 33, chain wheel one; 34, chain wheel two; 35, chain; 36, rotating shaft one; 37, driven bevel gear; 38, driving bevel gear; 39, rotating shaft two; 4, frame; 5, door-shaped frame; 6, hook; 7, connecting frame; 8, walking wheel; 9, support rod; 10, sliding rod; 11, sliding block; 12, support plate; 13, square frame; 14, drill rod; 15, guide sleeve; 16, sleeve; 17, limiting hole; 18, limiting pin. DETAILED DESCRIPTION

[0016] The following is a specific embodiment of the utility model, and the technical scheme of the utility model is further described in combination with the drawings, but the utility model is not limited to these embodiments.

[0017] As Figures 1-3As shown, the utility model provides a kind of portable pneumatic hand drill, including bracket 1, the top of bracket 1 is slidably installed with pneumatic drill 2, the output shaft end of pneumatic drill 2 is installed with drill rod 14, one end of bracket 1 is equipped with the power mechanism 3 of driving pneumatic drill 2 movement, the other end of bracket 1 is equipped with frame 4, frame 4 is installed with door type frame 5, hook 6 is installed on the both sides of door type frame 5, the bottom of bracket 1 is installed with walking wheel 8 by telescopic connecting frame 7, the bottom of the other end of bracket 1 is obliquely equipped with telescopic support rod 9, by adjusting the extension length of support rod 9 and connecting frame 7, to facilitate the height of drilling can be adjusted, walking wheel 8 has two, two walking wheels 8 are connected by axle.

[0018] As Figure 1 And 2 As shown, in use, the pneumatic drill 2 is pushed to the area to be drilled, and then the length of the connecting frame 7 and the support rod 9 is adjusted according to the height of the hole to be drilled. Since the pneumatic drill 2 generates a recoil force during the process of drilling the roadway, the hook 6 is hooked to the anchor net to fix the bracket 1, which can prevent the pneumatic drill 2 from moving backward. Then, the pneumatic drill 2 is driven by the power mechanism 3 to move towards the frame 4, making it easy to drill the roadway wall. The pneumatic drill 2 can be easily moved by the walking wheel 8. Compared with the traditional drilling method, the moving, supporting and drilling of the machine can be completed by two people, greatly reducing the labor intensity.

[0019] Two slide rods 10 are welded to the top of the bracket 1, and the frame 4 is fixed to one end of the slide rod 10. The pneumatic drill 2 is slidably installed on the slide rod 10 by a sliding block 11. The power mechanism 3 includes a handle 31, a protective box 32, a sprocket 33, a sprocket 34, and a chain 35 arranged between the sprocket 33 and the sprocket 34. The sliding block 11 is installed on the upper end of the chain 35 by a bolt. The sprocket 33 is installed on the bracket 1. The sprocket 34 is installed in the protective box 32 by a rotating shaft 36. The rotating shaft 36 is provided with a driven bevel gear 37. The driven bevel gear 37 is engaged with a driving bevel gear 38. The driving bevel gear 38 is provided with a rotating shaft 39. The rotating shaft 39 is rotatably installed on the protective box 32. One end of the rotating shaft 39 passes through the protective box 32 and is connected with the handle 31.

[0020] As Figure 3 As shown, the handle 31 is manually driven to rotate, which drives the driving bevel gear 38 to rotate under the action of the rotating shaft 39. The driving bevel gear 38 drives the rotating shaft 36 to rotate under the action of the driven bevel gear 37, so that the sprocket 34 rotates. The chain 35 wound on the sprocket 34 also moves. The sliding block 11 is fixed above the chain 35. Therefore, the pneumatic drill 2 will move along the slide rod 10 under the drive of the handle 1, realizing the drilling of the wall in the roadway.

[0021] The bottom of the support rod 9 is hinged to a support plate 12, and a square frame 13 is slidably installed on one side of the support plate 12.

[0022] like Figure 1 As shown, when drilling, the square frame 13 can be stepped on manually to restrict the movement of the support rod 9. The square frame 13 is slidably installed on one side of the support plate 12, and its position can be changed. The square frame 13 can be folded towards the support rod 9 without affecting the worker's pushing.

[0023] The bottom of the support plate 12 is provided with several sets of protrusions.

[0024] like Figure 1 As shown, the protrusions increase the friction between the support plate 12 and the ground, thereby improving the limiting effect on the support rod 9.

[0025] The top of the frame 4 is provided with a guide sleeve 15, and a bearing is provided inside the guide sleeve 15. The axis of the guide sleeve 15 corresponds to the axis of the drill rod 14.

[0026] like Figure 1 As shown, since the drill rod 14 is relatively long, the guide sleeve 15 can be used to support the drill rod 14, which facilitates the positioning of the drill rod 14.

[0027] Both sides of the frame 4 are provided with sleeves 16. Both sides of the gantry frame 5 pass through the frame 4 and are fitted into the sleeves 16. Both sides of the gantry frame 5 and the sleeves 16 are provided with several limiting holes 17. Limiting pins 18 are provided in the limiting holes 17. The limiting pins 18 are installed on the frame 4 by a zipper to prevent the limiting pins from being lost.

[0028] like Figure 2 As shown, due to the influence of the terrain in the coal mine roadway, the bracket 1 is far from the anchor mesh. Therefore, in this embodiment, the hook 6 is telescopically installed in the sleeve 16 through the portal frame 5. By adjusting the length of the portal frame 5 extending out of the sleeve 16, the hook 6 can move towards the anchor mesh so that it can hook the anchor mesh, thereby improving the applicability of the pneumatic drilling rig 2. After the portal frame 5 extends out of the sleeve 6 to a certain length, it is limited by the limiting pin 18.

[0029] Principle of use: when using, first install the drill pipe 14 on the pneumatic drilling machine 2, one operator pushes the bracket 1 to the position to be drilled, another operator adjusts the length of the casing 16 extended by the door-shaped frame 5 according to the tunnel condition, and limits the length of the extension through the limiting pin 18, then hangs the two hooks 6 on the anchor net, one operator steps on the square frame 13, then rotates the handle 31 to drive the pneumatic drilling machine 2 to move in the direction of the anchor net and start the pneumatic drilling machine 2 to drill; the moving machine, supporting machine and drilling of the present application can be completed by two people, compared with the traditional handheld drilling method, the labor intensity can be significantly reduced, the labor cost can be saved by half, the drilling machine does not need to be held by manpower, the accidents of anti-torque injury are avoided, at the same time, the trial proves that it takes one hour to drill a hole by using the handheld drilling machine, but it only takes 20 minutes to drill a hole by using the drilling machine provided by the present application, the production efficiency is significantly improved.

[0030] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways instead, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A portable, pneumatic hand drill, characterized in that: The utility model provides a kind of pneumatic drilling machine, including bracket (1), pneumatic drilling machine (2) is slidably installed above bracket (1), one end of bracket (1) is equipped with power mechanism (3) of driving pneumatic drilling machine (2) to move, the other end of bracket (1) is equipped with frame (4), frame (4) is installed with door type frame (5), hook (6) is installed on the both sides of door type frame (5), the bottom of bracket (1) is installed with travelling wheel (8) by telescopic connecting frame (7), the bottom of the other end of bracket (1) is obliquely equipped with telescopic support rod (9).

2. A portable pneumatic hand drill machine as claimed in claim 1 wherein: The top of bracket (1) is installed with slide bar (10), pneumatic drilling machine (2) is slidably installed on slide bar (10) by slide block (11), the power mechanism (3) includes handle (31), protective box (32), sprocket one (33), sprocket two (34) and chain (35) being arranged between sprocket one (33) and sprocket two (34), sprocket one (33) is installed on bracket (1), sprocket two (34) is installed in protective box (32) by pivot one (36), driven bevel gear (37) is equipped on pivot one (36), driven bevel gear (37) is engaged with driving bevel gear (38), driving bevel gear (38) is equipped with pivot two (39), pivot two (39) one end passes through protective box (32) and is connected with handle (31).

3. A portable pneumatic hand drill machine as claimed in claim 1 wherein: The bottom of support rod (9) is installed with support plate (12), one side of support plate (12) is slidably installed with square frame (13).

4. A portable pneumatic hand drill machine as claimed in claim 3 wherein: The bottom of support plate (12) is equipped with several groups of protrusions.

5. A portable pneumatic hand drill machine as claimed in claim 1 wherein: The top of frame (4) is equipped with guide sleeve (15).

6. A portable, pneumatic hand drill machine according to claim 1, characterized in that: The both sides of frame (4) are equipped with sleeve pipe (16), and the both sides of door type frame (5) are sleeved in sleeve pipe (16) through frame (4), a plurality of limiting holes (17) are formed in the both sides of door type frame (5) and sleeve pipe (16), and limiting pin (18) is arranged in limiting hole (17).

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