Pneumatic mechanical reamer

Abstract

The utility model discloses a pneumatic mechanical reamer which comprises a spraying rod, a fixing seat, a supporting rod, a limiting groove, a reaming cutter bar and a pneumatic mechanism, the spraying rod is fixed on one side of the fixing seat, the supporting rod is fixed on the other side of the fixing seat, the spraying rod and the supporting rod are both located on the same axis, and a cavity is formed in the spraying rod, the fixing seat and the supporting rod in a penetrating mode. The limiting grooves are formed in the two sides of the fixing base, and one end of the reaming cutter bar is rotationally connected with the fixing base. The utility model has the beneficial effects that the pneumatic mechanism is arranged, so that high-pressure gas is injected into the first butt joint pipe through external high-pressure gas guide equipment, and the high-pressure gas is guided into the inner cavity of the supporting rod through the first connecting pipe; the sealing plug pushes the pneumatic pipe and the linkage rod to integrally slide in the supporting rod, during sliding, the linkage rod drives the driven fluted disc to be meshed and linked and drives the driven fluted disc to rotate, so that the driven fluted disc is opened, chambering operation is conducted, and the chambering device is simple, efficient and practical.

Description

Technical Field

[0001] The utility model relates to a hole reamer, in particular to a pneumatic mechanical hole reamer, belonging to the technical field of hole reamer. Background Art

[0002] Nowadays, with the continuous expansion of the horizontal mining area and the continuous increase in the vertical mining depth of coal mines, the workload of water supply and drainage, gas extraction, ventilation and feeding between different levels and different areas of coal mines is gradually increasing. If only traditional underground tunnels are used as transportation channels, the cost investment and safety risks of tunnel excavation, pipeline laying along the way, and daily maintenance will increase accordingly. Therefore, the aperture of the through hole must be enlarged, and a hole expander is needed at this time.

[0003] However, most of the existing reamers have various problems. For example, in the water-powered coal mine reaming device disclosed in publication number CN211201760U, although it realizes the local expansion of the coal mine borehole, thereby meeting the needs of coal mine drilling of different diameters, this technical solution and most of the current reamers use the thrust provided by the water flow as the power for opening the blade. Although this method can meet the opening requirements of the blade, during reaming, a large amount of water will be ejected from the hole, resulting in a large amount of dirt, and the water flow will impact the inner wall of the hole, resulting in the hole being not smooth enough, and even causing local collapse in the hole, posing certain safety hazards. Utility Model Content

[0004] The technical solution of the present utility model aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present utility model is to solve the above-mentioned shortcomings in the existing technology and propose a pneumatic mechanical reamer.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pneumatic mechanical reamer comprises a spray rod, a fixing seat, a support rod, a limiting groove, a reaming cutter rod and a pneumatic mechanism, wherein the spray rod is fixed to one side of the fixing seat, the support rod is fixed to the other side of the fixing seat, and the spray rod and the support rod are located on the same axis, and a cavity is provided through the spray rod, the fixing seat and the support rod, the limiting groove is provided on both sides of the fixing seat and is connected to the cavity, one end of the reaming cutter rod is rotatably connected to the fixing seat and is located in the limiting groove, and the end of the support rod away from the fixing seat is rotatably connected to a turntable through a sealed bearing;

[0007] The pneumatic mechanism is arranged in the cavity, and the pneumatic mechanism includes a pneumatic tube, a linkage rod and a driven gear disc. The pneumatic tube is slidably connected in the internal cavity of the support rod, the linkage rod is coaxially fixed at one end of the pneumatic tube, the driven gear disc is fixed at the connecting end of the reaming tool rod and the fixed seat, and a notch is provided on the linkage rod, and the driven gear disc is engaged in the notch of the linkage rod.

[0008] As a further solution of the present invention: the pneumatic mechanism also includes a sealing plug, which is coaxially fixed to the end of the pneumatic tube away from the linkage rod, and the sealing plug is slidably engaged in the internal cavity of the support rod.

[0009] As a further solution of the present invention: the pneumatic mechanism also includes a first connecting pipe and a first butt joint pipe, the first connecting pipe is fixed on the turntable of the support rod, one end of the first butt joint pipe is connected to the first connecting pipe, and the other end is connected to the external high-pressure gas diversion equipment.

[0010] As a further solution of the present invention: a conduit is provided at the inner axis of the support rod, the conduit is slidingly and sealingly connected to the pneumatic tube, and a spray hole is provided through the spray rod, and the conduit portion is located in the spray hole of the spray rod.

[0011] As a further solution of the present invention: a return spring is sleeved on the outside of the catheter, one end of the return spring abuts against the linkage rod, and the other end abuts against the inner wall of the fixing seat.

[0012] As a further solution of the present invention: a second butt joint is fixed to one end of the catheter, the second butt joint passes through the turntable at one end of the support rod, and a second connecting pipe is connected to the second butt joint.

[0013] The beneficial effects of the utility model are:

[0014] In the present invention, a pneumatic mechanism is provided, and high-pressure gas is injected into the first connecting tube of the external high-pressure gas guide device box, and the high-pressure gas is introduced into the internal cavity of the support rod through the first connecting tube, and the pneumatic tube and the linkage rod are pushed to slide as a whole inside the support rod through the sealing plug. During the sliding, the driven gear disc is driven to engage and rotate through the linkage rod to open it and perform the hole expansion operation. It is simple, efficient and practical, and effectively avoids the traditional water flow providing thrust, which causes a large amount of dirt to be generated, and the water flow will impact the inner wall of the hole, resulting in the hole being not smooth enough, and even causing local collapse in the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2This is a schematic diagram of the pneumatic mechanism connection structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the pneumatic tube and its connection structure of the utility model;

[0018] Figure 4 This is a partially enlarged structural diagram of the support rod of the utility model.

[0019] In the figure: 1. spray rod, 2. fixing seat, 3. support rod, 4. limiting groove, 5. reaming knife bar, 6. pneumatic mechanism, 61. pneumatic tube, 62. linkage rod, 63. driven gear plate, 64. sealing plug, 65. first connecting tube, 66. first butt joint tube, 67. return spring, 7. guide tube, 8. second butt joint tube, 9. second connecting tube. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1, as Figures 1 to 4 As shown, a pneumatic mechanical reamer includes a spray rod 1, a fixed seat 2, a support rod 3, a limiting groove 4, a reaming tool rod 5 and a pneumatic mechanism 6. The spray rod 1 is fixed to one side of the fixed seat 2, and the support rod 3 is fixed to the other side of the fixed seat 2. The spray rod 1 and the support rod 3 are located on the same axis, and a cavity is provided through the spray rod 1, the fixed seat 2 and the support rod 3. The limiting grooves 4 are provided on both sides of the fixed seat 2 and are connected to the cavity. One end of the reaming tool rod 5 is rotatably connected to the fixed seat 2 and is located in the limiting groove 4. The end of the support rod 3 away from the fixed seat 2 is rotatably connected to a turntable through a sealed bearing.

[0022] The pneumatic mechanism 6 is arranged in the cavity, and the pneumatic mechanism 6 includes a pneumatic tube 61, a linkage rod 62 and a driven gear plate 63. The pneumatic tube 61 is slidably connected to the internal cavity of the support rod 3. The linkage rod 62 is coaxially fixed to one end of the pneumatic tube 61. The driven gear plate 63 is fixed to the connection end of the reaming tool rod 5 and the fixed seat 2. The linkage rod 62 is provided with a notch, and the driven gear plate 63 is engaged in the notch of the linkage rod 62.

[0023] The pneumatic mechanism 6 further includes a sealing plug 64, which is coaxially fixed to the end of the pneumatic tube 61 away from the linkage rod 62, and the sealing plug 64 is slidably engaged in the internal cavity of the support rod 3;

[0024] The pneumatic mechanism 6 also includes a first connecting pipe 65 and a first butt joint pipe 66. The first connecting pipe 65 is fixed on the turntable of the support rod 3. One end of the first butt joint pipe 66 is connected to the first connecting pipe 65, and the other end is connected to the external high-pressure gas guide device.

[0025] In the present invention, a pneumatic mechanism 6 is provided, and high-pressure gas is injected into the first connecting pipe 66 of the external high-pressure gas guide device box, and the high-pressure gas is introduced into the internal cavity of the support rod 3 through the first connecting pipe 65, and the pneumatic tube 61 and the linkage rod 62 are pushed to slide as a whole inside the support rod 3 through the sealing plug 64. During the sliding, the linkage rod 62 drives the driven gear disc 63 to engage and rotate, so that it opens and performs the hole expansion operation. It is simple, efficient and practical, and effectively avoids the traditional water flow providing thrust, which causes a large amount of dirt to be generated, and the water flow will impact the inner wall of the hole, resulting in the hole being not smooth enough, and even causing local collapse in the hole.

[0026] Example 2, as Figures 1 to 4 As shown, in addition to all the technical features of the first embodiment, this embodiment also includes:

[0027] A conduit 7 is provided at the internal axis of the support rod 3, which is slidingly and sealingly connected to the pneumatic tube 61, and a spray hole is provided through the spray rod 1. Part of the conduit 7 is located in the spray hole of the spray rod 1, and the flow is guided by the conduit 7 so that the top end of the spray rod 1 of the reamer can spray relevant substances according to actual needs.

[0028] The outer sleeve of the catheter 7 is provided with a reset spring 67, one end of the reset spring 67 abuts against the linkage rod 62, and the other end abuts against the inner wall of the fixed seat 2. The elastic force of the reset spring 67 enables the linkage rod 62 to be quickly reset, thereby enabling the reaming tool rod 5 to rotate into the limit groove 4.

[0029] A second docking tube 8 is fixed at one end of the catheter 7. The second docking tube 8 passes through the turntable at one end of the support rod 3, and a second connecting tube 9 is connected to the second docking tube 8. External substances can be introduced into the second docking tube 8 and the catheter 7 through the second connecting tube 9.

[0030] When using the reamer, first connect the first connecting tube 66 and the second connecting tube 9 to the first connecting tube 65 and the second connecting tube 8 respectively, and then send the reamer into the hole that needs to be reamed. After reaching the designated position, high-pressure gas is injected into the first connecting tube 66 through an external high-pressure gas guide device, and the high-pressure gas is introduced into the internal cavity of the support rod 3 through the first connecting tube 65, and the pneumatic tube 61 and the linkage rod 62 are pushed as a whole to slide inside the support rod 3 through the sealing plug 64. During the sliding, the linkage rod 62 drives the driven gear disc 63 to engage and link, and drives the driven gear disc 63 to rotate, so that it opens, and the reaming operation can be performed.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pneumatic mechanical reamer, comprising a spray rod (1), a fixing seat (2), a support rod (3), a limiting groove (4), a reaming tool rod (5) and a pneumatic mechanism (6), characterized in that: The spray rod (1) is fixed on one side of the fixing seat (2), and the support rod (3) is fixed on the other side of the fixing seat (2), and the spray rod (1) and the support rod (3) are both located on the same axis, and a cavity is provided through the inside of the spray rod (1), the fixing seat (2) and the support rod (3), the limiting groove (4) is provided on both sides of the fixing seat (2) and is connected to the cavity, one end of the reaming knife rod (5) is rotatably connected to the fixing seat (2) and is located in the limiting groove (4), and the end of the support rod (3) away from the fixing seat (2) is rotatably connected to a turntable through a sealed bearing; The pneumatic mechanism (6) is arranged in the cavity, and the pneumatic mechanism (6) includes a pneumatic tube (61), a linkage rod (62) and a driven gear disc (63), the pneumatic tube (61) is slidably connected in the internal cavity of the support rod (3), the linkage rod (62) is coaxially fixed to one end of the pneumatic tube (61), the driven gear disc (63) is fixed to the connection end between the reaming tool rod (5) and the fixed seat (2), the linkage rod (62) is provided with a notch, and the driven gear disc (63) is engaged in the notch of the linkage rod (62).

2. A pneumatic mechanical reamer according to claim 1, characterized in that: The pneumatic mechanism (6) further comprises a sealing plug (64), which is coaxially fixed to an end of the pneumatic tube (61) away from the linkage rod (62), and the sealing plug (64) is slidably engaged in the inner cavity of the support rod (3).

3. The pneumatic mechanical reamer according to claim 1, characterized in that: The pneumatic mechanism (6) further comprises a first connecting pipe (65) and a first butt-jointing pipe (66), wherein the first connecting pipe (65) is fixed to the turntable of the support rod (3), and one end of the first butt-jointing pipe (66) is connected to the first connecting pipe (65), and the other end is connected to an external high-pressure gas guide device.

4. The pneumatic mechanical reamer according to claim 1, characterized in that: A conduit (7) is provided at the inner axis of the support rod (3), the conduit (7) is slidably and sealedly connected to the pneumatic tube (61), and a spray hole is provided through the spray rod (1), and a portion of the conduit (7) is located in the spray hole of the spray rod (1).

5. The pneumatic mechanical reamer according to claim 4, characterized in that: A return spring (67) is sleeved on the outside of the conduit (7), one end of the return spring (67) abuts against the linkage rod (62), and the other end abuts against the inner wall of the fixing seat (2).

6. The pneumatic mechanical reamer according to claim 4, characterized in that: A second butt joint (8) is fixed to one end of the guide tube (7), the second butt joint (8) passes through the turntable at one end of the support rod (3), and a second connecting pipe (9) is connected to the second butt joint (8).

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