Raise boring machine with protection function

Abstract

The utility model relates to a raise boring machine with a protection function, which belongs to the technical field of raise boring machines and comprises a raise boring cutter head, a drill bit support, a raise boring rod and a positioning screw, the raise boring cutter head is fixedly connected with the raise boring rod, the drill bit support is fixedly provided with a connecting piece, and the raise boring cutter head is fixedly provided with a connecting bottom box. Spring damping shock absorbers are evenly and fixedly installed on the connecting bottom box, the connecting bottom box is connected with a top box in a sliding mode, a connecting inserting groove is fixedly formed in the top box, the connecting piece can be connected with the connecting inserting groove through a positioning screw, and the drill bit support is provided with a raise boring drill bit body. The problems that an existing drill bit needs to be disassembled integrally during maintenance and replacement, and time and labor are consumed are solved, through modular design, damaged parts can be rapidly replaced, downtime can be shortened, the damping protection assembly is arranged, damping protection can be carried out on the raise boring machine, and noise generated by vibration is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reverse drilling, especially to a reverse drilling with protection. BACKGROUND

[0002] The reverse drilling machine is driven by the motor of the drilling machine, the hydraulic motor drives the faucet, and the hydraulic power is used to transmit the torque to the drilling tool system, drive the drill rod and the drill bit to rotate, and the hob on the pilot hole drill bit or the reamer bit makes pure rolling or micro-slippage along the bottom rock working surface under the action of the drilling pressure, so that the hob teeth impact, extrude and shear the rock, and the rock is broken.

[0003] Through the search, the existing Chinese patent with the publication number CN202322108540.9 discloses a reamer cutter, which is provided behind the reamer cutter to reduce the inclination angle of the reamer cutter and achieve the effect of full contact between the reamer cutter and the soil above, thereby increasing the service life of the reamer cutter and improving the durability of the reamer cutter.

[0004] The above technical solution has the following defects: although such a reverse drilling structure can increase the service life of the cutter by adjusting the inclination angle, the existing reverse drilling is difficult to avoid wear and damage in actual use, and is prone to damage in actual use. It is not convenient to disassemble and maintain the reverse drilling, and the problem of time and labor consumption in replacing the existing drill bit is solved. Through modular design, damaged parts can be quickly replaced, downtime is reduced, and a shock absorption protection assembly is provided to absorb the shock of the reverse drilling and reduce the noise generated by vibration.

[0005] Therefore, the present application improves and solves the above problems through careful research and application of theoretical principles, and finally proposes a technical solution that is reasonable in design and effectively improves the above defects.

[0006] The information disclosed in the background section of this document is only intended to deepen the understanding of the overall background of the utility model, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0007] The utility model provides a kind of reverse drilling with protection, solve the problem of time and labor consumption in replacing existing drill bit, through modular design, damaged parts can be quickly replaced, downtime is reduced, and a shock absorption protection assembly is provided to absorb the shock of the reverse drilling and reduce the noise generated by vibration.

[0008] The present invention provides the following solution to the above-mentioned technical problems: A protected reverse drilling rig includes a reverse drilling cutterhead, a drill bit support, a reverse drilling drill rod, and positioning screws. The reverse drilling cutterhead is fixedly connected to the reverse drilling drill rod. A connector is fixedly installed on the drill bit support. A connecting base box is fixedly installed on the reverse drilling cutterhead. Spring damping shock absorbers are uniformly fixedly installed on the connecting base box. A top box is slidably connected to the connecting base box. A connecting slot is fixedly installed on the top box. The connector can be connected to the connecting slot through the positioning screws. The drill bit support is provided with a reverse drilling drill bit body.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the top box is inserted into the connecting bottom box, and a protective sleeve is provided at the gap between the connecting bottom box and the top box.

[0011] Furthermore, the connecting slot is provided with screw holes evenly spaced, and the connector is provided with screw grooves evenly spaced.

[0012] Furthermore, the connector is configured as a T-shaped structure, and the connecting slot has a T-shaped groove corresponding to the connector.

[0013] Furthermore, drill bits are evenly distributed on the outer wall of the main body of the reverse drilling bit.

[0014] Furthermore, the reverse drilling cutterhead has a mounting groove corresponding to the connecting bottom box, and the connecting bottom box is installed in the mounting groove.

[0015] Furthermore, a side plate is fixedly installed on the connecting slot, and the area of ​​the side plate is larger than that of the mounting slot.

[0016] Furthermore, multiple sets of the connecting slots are evenly arranged, and the drill bit support and the main body of the raise boring bit are prefabricated components.

[0017] This utility model provides a protected reverse drilling tool, which has the following advantages:

[0018] 1. The drill bit holder and the main body of the raise drill bit are modular, integrated prefabricated components. When the main body of the raise drill bit is damaged, it can be directly replaced as a whole. Unscrew the positioning screw, and the connecting piece of the drill bit holder can be pulled out from the connecting slot. Insert the connecting piece of the new drill bit holder into the connecting slot, and thread the positioning screw through the screw hole of the connecting slot and the screw groove of the connecting piece to connect it with the screw thread, so that the drill bit holder can be stably installed at the connecting slot for use.

[0019] 2. A spring damping shock absorber is installed at the gap between the connecting slot and the connecting base box, and a side plate is installed on the outer wall of the connecting slot, so that the spring damping shock absorber can extend and retract to a certain extent, so that the drill bit support can be buffered and protected when drilling.

[0020] 3、Thus the protected back drilling solves the problem of the whole disassembly of the existing drill bit for maintenance and replacement, time and labor consumption, through the modular design, the damaged parts can be replaced quickly, the downtime is reduced, and the shock protection assembly is arranged to protect the back drilling from the shock and reduce the noise generated by the shock.

[0021] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following is a preferred embodiment of the present application and the detailed description of the drawings as follows. The specific embodiment of the present application is given in detail by the following examples and their drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A structure diagram of a back drilling with protection provided by an embodiment of the present application is shown in the figure;

[0024] Figure 2 A front view of a back drilling with protection provided by an embodiment of the present application is shown in the figure;

[0025] Figure 3 A structure diagram of a drill bit support in a back drilling with protection provided by an embodiment of the present application is shown in the figure;

[0026] Figure 4 A structure diagram of a connecting bottom box in a back drilling with protection provided by an embodiment of the present application is shown in the figure.

[0027] In the drawings, the component list represented by each number is as follows:

[0028] 1, back drilling cutter head; 2, drill bit support; 3, back drilling drill rod; 4, connecting piece; 5, connecting bottom box; 6, spring damping shock absorber; 7, top box; 8, protective sleeve; 9, connecting slot; 10, screw hole; 11, screw groove; 12, positioning screw; 13, back drilling drill bit main body; 14, drill; 15, mounting groove; 16, side plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings Figures 1-4The principles and features of the present application are described, the examples are used to explain the present application, and are not used to limit the scope of the present application. In the following paragraphs, the present application is described in more detail with reference to the accompanying drawings. The advantages and features of the present application will be more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and use non-precise proportions, only to facilitate, clearly assist in explaining the purpose of the present application embodiments.

[0030] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] As shown in Figures 1-4 A protected back drilling includes a back drilling cutter head 1, a drill bit support 2, a back drilling drill rod 3, a positioning screw 12, the back drilling cutter head 1 is fixedly connected with the back drilling drill rod 3, the drill bit support 2 is fixedly installed with a connecting piece 4, the back drilling cutter head 1 is fixedly installed with a connecting bottom box 5, the connecting bottom box 5 is uniformly fixedly installed with a spring damping shock absorber 6, the connecting bottom box 5 is slidingly connected with a top box 7, the top box 7 is fixedly installed with a connecting slot 9, the connecting piece 4 can be connected with the connecting slot 9 through the positioning screw 12, and the drill bit support 2 is provided with a back drilling drill bit body 13.

[0033] Preferably, the top box 7 is inserted into the connecting bottom box 5, and a protective sleeve 8 is arranged at the gap between the connecting bottom box 5 and the top box 7.

[0034] Preferably, the connecting slot 9 is uniformly provided with a screw hole 10, and the connecting piece 4 is uniformly provided with a screw groove 11.

[0035] Preferably, the connecting piece 4 is provided in a T-shaped structure, and the connecting slot 9 is provided with a T-shaped slot corresponding to the connecting piece 4.

[0036] Preferably, the back drilling drill bit body 13 is uniformly provided with a drill 14 on the outer wall.

[0037] Preferably, the reverse drilling cutter head 1 is provided with a mounting groove 15 corresponding to the connecting bottom box 5, and the connecting bottom box 5 is installed in the mounting groove 15.

[0038] Preferably, the connecting slot 9 is fixedly provided with a side plate 16, and the area of the side plate 16 is greater than that of the mounting groove 15.

[0039] Preferably, the connecting slot 9 is uniformly provided with multiple groups, and the drill bit support 2 and the reverse drilling bit main body 13 are integrated prefabricated components.

[0040] The specific working principle and use method of the utility model are as follows: the drill bit support 2 and the reverse drilling bit main body 13 are modular integrated prefabricated components, and when the reverse drilling bit main body 13 is damaged, the drill bit support 2 can be directly replaced as a whole, the positioning screw 12 is unscrewed, the connecting piece 4 of the drill bit support 2 can be pulled out from the connecting slot 9, the connecting piece 4 of the new drill bit support 2 is inserted into the connecting slot 9, the positioning screw 12 is screwed through the screw through hole 10 of the connecting slot 9 and the screw groove 11 of the connecting piece 4, so that the drill bit support 2 can be stably installed at the connecting slot 9 for use, the gap between the connecting slot 9 and the connecting bottom box 5 is provided with a spring damping shock absorber 6, and the outer wall of the connecting slot 9 is provided with a side plate 16, so that the spring damping shock absorber 6 can be stretched and contracted to a certain extent, and the drill bit support 2 can be buffered and protected during drilling work.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form; any ordinary technical personnel in the industry can implement the utility model according to the drawings and the above description; however, any equivalent changes, modifications and evolution of the above disclosed technical content within the scope of the technical scheme of the utility model are equivalent embodiments of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the utility model are still within the protection scope of the technical scheme of the utility model.

Claims

1. A protected reverse drilling rig, comprising a reverse drilling cutterhead (1), a drill bit support (2), a reverse drilling drill pipe (3), and a positioning screw (12), characterized in that: The reverse drilling cutterhead (1) is fixedly connected to the reverse drilling drill rod (3). The drill bit bracket (2) is fixedly installed with a connector (4). The reverse drilling cutterhead (1) is fixedly installed with a connecting base box (5). The connecting base box (5) is evenly fixedly installed with spring damping shock absorbers (6). The connecting base box (5) is slidably connected with a top box (7). The top box (7) is fixedly installed with a connecting slot (9). The connector (4) can be connected to the connecting slot (9) through a positioning screw (12). The drill bit bracket (2) is provided with a reverse drilling drill bit body (13).

2. The protected riser drill according to claim 1, characterized in that, The top box (7) is inserted into the connecting bottom box (5), and a protective sleeve (8) is provided at the gap between the connecting bottom box (5) and the top box (7).

3. The protected riser drill according to claim 1, characterized in that, The connecting slot (9) is provided with screw through holes (10) evenly, and the connector (4) is provided with screw grooves (11) evenly.

4. The protected riser drill according to claim 1, characterized in that, The connector (4) is configured as a T-shaped structure, and the connecting slot (9) is provided with a T-shaped groove corresponding to the connector (4).

5. A protected riser drill according to claim 1, characterized in that, The outer wall of the main body (13) of the reverse drilling bit is uniformly provided with drill nails (14).

6. A protected riser drill according to claim 1, characterized in that, The reverse drilling cutterhead (1) has a mounting slot (15) corresponding to the bottom box (5), and the bottom box (5) is installed in the mounting slot (15).

7. The protected riser drill according to claim 1, characterized in that, The connecting slot (9) is fixedly fitted with a side plate (16), the side plate (16) having an area larger than the mounting slot (15).

8. A protected riser drill according to claim 1, characterized in that, Multiple sets of the connecting slots (9) are evenly arranged, and the drill bit bracket (2) and the main body of the reverse drilling drill bit (13) are integrated prefabricated components.

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