A tunnel boring machine with convenient drill bit replacement

Abstract

The present invention provides a tunnel boring machine that facilitates drill bit replacement, comprising a tunnel boring machine body, a tunneling arm, and a tunneling head. The tunneling arm is movably connected to one end of the tunnel boring machine body, and the tunneling head and the tunneling arm are removably connected via a plug-in connection. One end of the tunneling arm is fixedly connected to a plug-in mechanism located on both sides of the tunneling head. A protective mechanism is provided between the tunneling head and the tunneling arm. The present invention addresses the problem that, in actual use, existing tunnel boring machines suffer from the high vulnerability of the cutting head, which is the primary working component. Furthermore, due to the large size of the machine body, the cutting head is also relatively heavy, requiring multiple workers to remove the bolts connecting the cutting head to the tunnel boring machine using disassembly tools. This method increases the workers' labor intensity and is detrimental to subsequent construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of tunneling machines, and more particularly to a tunneling machine that facilitates drill bit replacement. Background Technology

[0002] Tunneling and mining are important production links in coal mine production. Rapid tunneling of coal mine roadways is a key technical measure to ensure high and stable production in coal mines. Tunneling machines are used in the tunneling and mining of coal mines. They are mainly composed of a traveling mechanism, a working mechanism, a loading mechanism, and a transfer mechanism. As the traveling mechanism moves forward, the cutting head in the working mechanism continuously breaks the rock and transports the broken rock away. It has advantages such as safety, high efficiency, and good roadway quality, but it is expensive, has a complex structure, and suffers from significant wear and tear.

[0003] The cutting head of the tunneling machine currently in use is the main working component and is therefore highly susceptible to damage. Replacing the cutting head is also quite complicated. Due to the large size of the machine, the cutting head is also quite heavy. Generally, multiple workers use disassembly tools to remove the bolts connecting the cutting head and the tunneling machine. This method increases the labor intensity of the workers and is not conducive to the efficiency of subsequent construction. Summary of the Invention

[0004] The present invention aims to provide a tunneling machine that facilitates drill bit replacement to overcome or at least partially solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of the present invention is specifically implemented as follows:

[0006] This invention provides a tunneling machine for easy drill bit replacement, comprising a tunneling machine body, a tunneling arm, and a tunneling head. The tunneling arm is movably connected to one end of the tunneling machine body. The tunneling head and the tunneling arm are detachably connected by a plug-in connection. One end of the tunneling arm is fixedly connected to plug-in mechanisms located on both sides of the tunneling head. A protective mechanism is provided between the tunneling head and the tunneling arm. The plug-in mechanism includes a plug-in seat, with collars fixedly connected to the top and bottom of the plug-in seat. One side of the collar is fixedly connected to the tunneling arm. Two sets of motors are fixedly connected to one side of the inner wall of the plug-in seat, and the two sets of motors are arranged in opposite directions. A worm gear is fixedly connected to the output end of each motor. The side of the worm gear away from the motor is rotatably connected to the inner wall of the plug-in seat. A worm wheel is meshed with one side of the worm gear. A positioning pin is fixedly connected inside the worm wheel. The positioning column is rotatably connected to the inner wall of the insertion seat. A gear is fixedly connected to the other end of the positioning column. A toothed plate is meshed with one side of the gear. One end of the toothed plate is located inside the insertion seat. A fixing plate is fixedly connected to the other end of the toothed plate. The end of the fixing plate away from the toothed plate passes through the insertion seat and the tunneling head and extends into the interior of the tunneling head. The protective mechanism includes a support plate. One side of the support plate is fixedly connected to the tunneling arm. Multiple sets of support columns are arranged inside the support plate. The multiple sets of support columns are distributed in a ring at equal intervals. One end of the support column is fixedly connected to the inner wall of the support plate. The other end of the support column is fixedly connected to one end of the tunneling arm. A first protective spring is sleeved on the surface of the support column. One end of the first protective spring is fixedly connected to the inner wall of the support plate. The other end of the first protective spring is fixedly connected to one end of the tunneling arm.

[0007] As a further embodiment of the present invention, a connecting plate is fixedly connected to one side of the inner wall of the plug socket, and branch plates are fixedly connected to the top and bottom of the connecting plate. A pressing plate is fixedly connected to the side of the branch plate away from the connecting plate, and the side of the pressing plate away from the branch plate is slidably connected to the side of the toothed plate.

[0008] As a further embodiment of the present invention, fixing seats are fixedly embedded on both sides of the tunneling head at positions corresponding to the fixing plates, and the fixing seats are in clearance fit with the fixing plates.

[0009] As a further embodiment of the present invention, a positioning plate is fixedly connected to the side of the toothed plate near the abutting plate, and a positioning groove that fits the positioning plate with a clearance is provided on the side of the abutting plate near the toothed plate.

[0010] As a further embodiment of the present invention, four sets of docking plates are fixedly connected to the side of the support plate near the tunneling head, and a docking seat that is gap-fitted with the docking plate is fixedly embedded on the side of the tunneling head near the tunneling arm, and the positions of the docking plate and the docking seat correspond to each other.

[0011] As a further embodiment of the present invention, a second protective spring is provided inside the support plate. One end of the second protective spring is fixedly connected to the inner wall of the support plate, and the other end of the second protective spring is fixedly connected to the tunneling arm. The second protective spring is sleeved between the first protective spring and the support plate.

[0012] This invention provides a tunneling machine that facilitates drill bit replacement, with the following advantages:

[0013] By setting up a plug-in mechanism and a protective mechanism, the plug-in mechanism can plug the tunneling head onto the tunneling arm, and the plug-in mechanism can be removed when replacing the tunneling arm to achieve the effect of installing and disassembling the tunneling head, thereby improving construction efficiency.

[0014] By setting up a connecting plate, a branch plate, and a clamping plate, the connecting plate connects the clamping plate to the plug socket through the branch plate, thereby fixing the clamping plate. The clamping plate clamps one side of the toothed plate to prevent the toothed plate from shaking or shifting when it moves.

[0015] By setting a fixing seat, the fixing seat and the fixing plate can play a protective role when fixing the tunneling head to the tunneling arm. The fixing seat can be made of highly wear-resistant metal material to reduce the wear and tear when fixing the tunneling head to the tunneling arm.

[0016] By setting a positioning plate and a positioning groove, the positioning plate and positioning groove can limit the maximum movement distance of the toothed plate when it moves, preventing the toothed plate from sliding out of the socket when it moves.

[0017] By setting up a docking plate and a docking seat, the docking plate needs to be inserted into the docking seat when installing the tunneling head, thus guiding the installation of the tunneling head.

[0018] By setting a second protective spring, which, together with the first protective spring, has a larger volume and a higher elastic coefficient, it can effectively apply elastic force to the support plate, thus providing a shock protection effect when the support plate is impacted by the tunneling head. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an overall perspective view of the present invention.

[0021] Figure 2 This is a perspective view of the connector and collar in this invention.

[0022] Figure 3 This is a disassembled perspective view of the collar and the tunneling head in this invention.

[0023] Figure 4 This is a cross-sectional perspective view of the connector in this invention.

[0024] Figure 5 This is a perspective view of the toothed plate and the clamping plate in this invention.

[0025] Figure 6 This is a perspective view of the support plate in this invention.

[0026] In the diagram: 1. Tunneling machine body; 2. Tunneling arm; 3. Tunneling head; 401. Plug-in seat; 402. Collar; 403. Motor; 404. Worm; 405. Worm wheel; 406. Positioning column; 407. Gear; 408. Gear plate; 409. Fixing plate; 501. Support plate; 502. Support column; 503. First protective spring; 6. Connecting plate; 7. Branch plate; 8. Abutting plate; 9. Fixing seat; 10. Positioning plate; 11. Positioning groove; 12. Connecting plate; 13. Connecting seat; 14. Second protective spring. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0028] See Figure 1 The present invention provides a tunneling machine that facilitates drill bit replacement, comprising a tunneling machine body 1, a tunneling arm 2, and a tunneling head 3. The tunneling arm 2 is movably connected to one end of the tunneling machine body 1. The tunneling head 3 is detachably connected to the tunneling arm 2 by a plug-in connection. One end of the tunneling arm 2 is fixedly connected to a plug-in mechanism located on both sides of the tunneling head 3. A protective mechanism is provided between the tunneling head 3 and the tunneling arm 2.

[0029] By incorporating a plug-in mechanism and a protective mechanism, the plug-in mechanism allows the tunneling head 3 to be plugged into the tunneling arm 2, and the plug-in mechanism can be removed when replacing the tunneling arm 2, thus achieving the effect of installing and disassembling the tunneling head 3, thereby improving construction efficiency.

[0030] like Figure 3 and Figure 4As shown, the insertion mechanism includes an insertion base 401. A collar 402 is fixedly connected to both the top and bottom of the insertion base 401. One side of the collar 402 is fixedly connected to the tunneling arm 2. Two sets of motors 403 are fixedly connected to one side of the inner wall of the insertion base 401, and the two sets of motors 403 are arranged in opposite directions. A worm gear 404 is fixedly connected to the output end of each motor 403. The side of the worm gear 404 away from the motor 403 is rotatably connected to the inner wall of the insertion base 401. A worm wheel 405 is meshed with one side of the worm gear 404. A positioning post 406 is fixedly connected inside the worm gear 405. One end of the positioning post 406 is rotatably connected to the inner wall of the insertion seat 401. A gear 407 is fixedly connected to the other end of the positioning post 406. A toothed plate 408 is meshed with one side of the gear 407. One end of the toothed plate 408 is located inside the insertion seat 401. A fixing plate 409 is fixedly connected to the other end of the toothed plate 408. The end of the fixing plate 409 away from the toothed plate 408 passes through the insertion seat 401 and the tunneling head 3 and extends into the interior of the tunneling head 3.

[0031] like Figure 6 As shown, the protective mechanism includes a support plate 501. One side of the support plate 501 is fixedly connected to the tunneling arm 2. One end of the tunneling head 3 passes through the support plate 501 and is connected to the tunneling arm 2. The tunneling head 3 cooperates with the tunneling arm 2, so that the driving component inside the tunneling arm 2 can drive the tunneling head 3 to rotate for tunneling operations. The support plate 501 is provided with multiple sets of support columns 502. The multiple sets of support columns 502 are distributed in a ring at equal intervals. One end of the support column 502 is fixedly connected to the inner wall of the support plate 501, and the other end of the support column 502 is fixedly connected to one end of the tunneling arm 2. A first protective spring 503 is sleeved on the surface of the support column 502. One end of the first protective spring 503 is fixedly connected to the inner wall of the support plate 501, and the other end of the first protective spring 503 is fixedly connected to one end of the tunneling arm 2.

[0032] like Figure 4 As shown, a connecting plate 6 is fixedly connected to one side of the inner wall of the plug-in base 401. Branch plates 7 are fixedly connected to the top and bottom of the connecting plate 6. A pressing plate 8 is fixedly connected to the side of the branch plate 7 away from the connecting plate 6. The side of the pressing plate 8 away from the branch plate 7 is slidably connected to one side of the toothed plate 408.

[0033] By setting up a connecting plate 6, a branch plate 7, and a clamping plate 8, the connecting plate 6 connects the clamping plate 8 to the plug socket 401 via the branch plate 7, thereby fixing the clamping plate 8. The clamping plate 8 clamps one side of the toothed plate 408 to prevent it from shaking or shifting when moving.

[0034] like Figure 2As shown, fixing seats 9 are fixedly embedded on both sides of the tunneling head 3 at positions corresponding to the fixing plates 409, and the fixing seats 9 are in clearance fit with the fixing plates 409.

[0035] By setting a fixing seat 9, the fixing seat 9 and the fixing plate 409 can play a protective role when fixing the tunneling head 3 to the tunneling arm 2. The material of the fixing seat 9 can be a highly wear-resistant metal material to reduce the wear when fixing the tunneling head 3 to the tunneling arm 2.

[0036] like Figure 5 As shown, a positioning plate 10 is fixedly connected to the side of the toothed plate 408 near the abutting plate 8, and a positioning groove 11 that is clearance-fitted with the positioning plate 10 is provided on the side of the abutting plate 8 near the toothed plate 408.

[0037] By setting the positioning plate 10 and the positioning groove 11, the positioning plate 10 and the positioning groove 11 can limit the maximum movement distance of the toothed plate 408 when it moves, so as to prevent the toothed plate 408 from sliding out of the plug socket 401 when it moves.

[0038] like Figure 3 As shown, four sets of docking plates 12 are fixedly connected to the side of the support plate 501 near the tunneling head 3, and docking seats 13 that are clearance-fitted with docking plates 12 are fixedly embedded on the side of the tunneling head 3 near the tunneling arm 2. The positions of docking plates 12 and docking seats 13 are corresponding.

[0039] By setting up the docking plate 12 and the docking seat 13, the docking plate 12 needs to be inserted into the docking seat 13 when installing the tunneling head 3, thereby guiding the installation of the tunneling head 3.

[0040] like Figure 6 As shown, a second protective spring 14 is provided inside the support plate 501. One end of the second protective spring 14 is fixedly connected to the inner wall of the support plate 501, and the other end of the second protective spring 14 is fixedly connected to the tunneling arm 2. The second protective spring 14 is sleeved between the first protective spring 503 and the support plate 501.

[0041] By setting a second protective spring 14, which has a larger volume and higher elasticity coefficient after cooperating with the first protective spring 503, the second protective spring 14 can effectively apply elastic force to the support plate 501, so that the support plate 501 can play a counter-impact protection effect when it is impacted by the tunneling head 3.

[0042] The working principle of this invention is as follows: When it is necessary to replace the tunneling head 3, the operator lowers the tunneling arm 2 through the power mechanism of the tunneling machine body 1. Then, the operator starts the motor 403, which drives the worm gear 404 to rotate. The worm gear 404, through meshing with the worm wheel 405, drives the worm wheel 405 to rotate. When the worm wheel 405 rotates, it fixes its position through the positioning pin 406. Then, the worm wheel 405 drives the gear 407 to rotate. The gear 407, through meshing with the toothed plate 408, drives the toothed plate 408 to move. The toothed plate 408 drives the fixing plate 409 to leave the fixing seats 9 on both sides of the tunneling head 3. At this time, the operator can lift the tunneling head 3 out of the insertion seat 401 to complete the disassembly of the tunneling head 3. Then, the operator lifts out the new... The tunneling head 3 is inserted into the connector 401 at its mounting end. Then, the operator reverses the motor 403, which drives the fixing plate 409 into the fixing seats 9 on both sides of the tunneling head 3 through the toothed plate 408, thus completing the fixing of the new tunneling head 3 and the replacement of the tunneling head 3. The replacement process does not require disassembly tools or the cooperation of multiple workers, which is relatively convenient. In addition, the second protective spring 14 in the support plate 501, after cooperating with the first protective spring 503, has a larger volume and a higher elastic coefficient. The second protective spring 14 and the first spring can apply elastic force to the support plate 501, so that the support plate 501 can play a counter-impact protection role when it is impacted by the tunneling head 3, thus playing a protective role during the tunneling process of the tunneling head 3.

[0043] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A tunneling machine with easy-to-change drill bit, comprising a tunneling machine body (1), a tunneling arm (2), and a tunneling head (3), wherein the tunneling arm (2) is movably connected to one end of the tunneling machine body (1), and the tunneling head (3) is detachably connected to the tunneling arm (2) by a plug-in connection, characterized in that: One end of the tunneling arm (2) is fixedly connected to a plug-in mechanism located on both sides of the tunneling head (3). A protective mechanism is provided between the tunneling head (3) and the tunneling arm (2). The plug-in mechanism includes a plug-in seat (401). A collar (402) is fixedly connected to the top and bottom of the plug-in seat (401). One side of the collar (402) is fixedly connected to the tunneling arm (2). Two sets of motors (403) are fixedly connected to one side of the inner wall of the plug-in seat (401). The two sets of motors (403) are arranged in opposite directions. A worm gear (404) is fixedly connected to the output end of the motor (403). The side of the worm gear (404) away from the motor (403) is rotatably connected to the inner wall of the connector (401). A worm wheel (405) is meshed with one side of the worm gear (404). A positioning pin (406) is fixedly connected inside the worm wheel (405). One end of the positioning pin (406) is rotatably connected to the inner wall of the connector (401). A gear (407) is fixedly connected to the other end of the positioning pin (406). One side of the gear (407) is... A toothed plate (408) is engaged with the toothed plate (408). One end of the toothed plate (408) is located inside the insertion seat (401), and the other end of the toothed plate (408) is fixedly connected to a fixing plate (409). The end of the fixing plate (409) away from the toothed plate (408) passes through the insertion seat (401) and the tunneling head (3) and extends into the interior of the tunneling head (3). The protective mechanism includes a support plate (501). One side of the support plate (501) is fixedly connected to the tunneling arm (2), and multiple sets of supports are provided inside the support plate (501). Support columns (502), multiple sets of support columns (502) are distributed in a ring at equal intervals. One end of the support column (502) is fixedly connected to the inner wall of the support plate (501), and the other end of the support column (502) is fixedly connected to one end of the tunneling arm (2). A first protective spring (503) is sleeved on the surface of the support column (502). One end of the first protective spring (503) is fixedly connected to the inner wall of the support plate (501), and the other end of the first protective spring (503) is fixedly connected to one end of the tunneling arm (2).

2. The tunneling machine for easy drill bit replacement according to claim 1, characterized in that, A connecting plate (6) is fixedly connected to one side of the inner wall of the plug-in socket (401). A branch plate (7) is fixedly connected to the top and bottom of the connecting plate (6). A pressing plate (8) is fixedly connected to the side of the branch plate (7) away from the connecting plate (6). The side of the pressing plate (8) away from the branch plate (7) is slidably connected to the side of the toothed plate (408).

3. A tunneling machine for easy drill bit replacement according to claim 1, characterized in that, The tunneling head (3) has a fixed seat (9) embedded on both sides corresponding to the fixed plate (409), and the fixed seat (9) is in clearance fit with the fixed plate (409).

4. A tunneling machine for easy drill bit replacement according to claim 1, characterized in that, A positioning plate (10) is fixedly connected to the side of the toothed plate (408) near the abutting plate (8), and a positioning groove (11) that is clearance-fitted with the positioning plate (10) is provided on the side of the abutting plate (8) near the toothed plate (408).

5. A tunneling machine for easy drill bit replacement according to claim 1, characterized in that, The support plate (501) is fixedly connected with four sets of docking plates (12) on the side near the tunneling head (3). The tunneling head (3) is fixedly embedded with a docking seat (13) that is in clearance fit with the docking plate (12) on the side near the tunneling arm (2). The positions of the docking plate (12) and the docking seat (13) are corresponding.

6. A tunneling machine for easy drill bit replacement according to claim 1, characterized in that, The support plate (501) is provided with a second protective spring (14) inside. One end of the second protective spring (14) is fixedly connected to the inner wall of the support plate (501), and the other end of the second protective spring (14) is fixedly connected to the tunneling arm (2). The second protective spring (14) is sleeved between the first protective spring (503) and the support plate (501).

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