Heading machine material transfer device for heading machine

Abstract

The invention relates to the technical field of tunneling equipment material conveying, and discloses a tunneling machine material transfer device for a tunneling machine, the tunneling machine material transfer device for the tunneling machine comprises a vehicle body and a track, a mounting plate is fixedly mounted on the outer wall of the bottom of the vehicle body, and wheels are rotatably mounted on the side wall of the mounting plate; contact assemblies are arranged in the wheels. According to the heading machine material transfer device for the heading machine, by arranging the contact assembly, the contact plate slides towards the side away from the center of the wheel in the horizontal direction along the inner surface of the sliding cavity, and then the contact plate makes contact with the lateral inner surface of an external rail, so that the grasping force of the wheel on the rail is guaranteed, and the advancing stability of the wheel is guaranteed; the phenomenon that the wheels slip on the rails is avoided, meanwhile, the phenomenon that the wheels derail after braking and stopping during material transfer of the trolley body, and consequently the trolley body overturns is avoided, and then the safety during material transfer is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of material conveying technology for tunneling equipment, specifically to a material transfer device for a tunneling machine. Background Technology

[0002] When developing mountains, especially when excavating tunnels, tunneling machines are needed. However, the excavation work generates a large amount of soil and other waste. If it is not removed in time, it will block the tunneling machine's passage and affect the subsequent construction work. Therefore, a material transfer device is needed.

[0003] Existing material transfer devices for tunneling machines typically have a conveyor track installed behind the machine during operation, with transfer trolleys on the track. This not only transports the excavated soil and rocks outwards but also transports personnel and equipment, greatly improving the continuous working efficiency of the tunneling machine and accelerating the progress of the project.

[0004] However, in actual use, the existing material transfer trolleys require movement and operation on tracks to ensure transportation safety and capacity. However, the trolleys need to brake upon reaching their destination. If this process is too long, it reduces the trolley's transportation efficiency; if it is too short, it affects the trolley's stability, causing the loaded tools or materials to shake and potentially overturn, thus compromising its safety. Therefore, we propose a material transfer device for tunneling machines. Summary of the Invention

[0005] The purpose of this invention is to provide a material transfer device for a tunneling machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a material transfer device for a tunneling machine, comprising a vehicle body and a track, wherein a mounting plate is fixedly installed on the bottom outer wall of the vehicle body, and wheels are rotatably mounted on the side wall of the mounting plate, and a contact component is provided inside the wheel, the contact component comprising:

[0007] A sliding rod is provided, which passes through the side wall of the wheel and is slidably connected to the side wall of the wheel. A mounting plate is fixedly installed on the outer wall of the sliding rod near the center of the wheel. The side wall of the mounting plate is fixedly connected to the end of a clamping spring, and the other end of the clamping spring is fixedly connected to the inner wall of the wheel.

[0008] A rotating rod is rotatably mounted on the inner wall of the sliding rod at the end away from the wheel. An abutment ball is fixedly connected to the end of the rotating rod. The end of a spiral spring is fixedly connected to the arc-shaped outer wall of the rotating rod. The other end of the spiral spring is fixedly connected to the inner wall of the sliding rod. A positioning ring is fixedly mounted on the left outer wall of the abutment ball.

[0009] The hinge rod has its bottom end hinged to the top inner wall of the slide rod. The side wall of the wheel has a sliding cavity. The inner wall of the sliding cavity is slidably connected to a contact plate. A transmission rod is fixedly installed on the inner surface of the sliding cavity.

[0010] Preferably, strip-shaped limiting blocks are provided on the outer walls of the left and right sides of the slide rod, and a circular hole with a diameter that matches the outer diameter of the slide rod is provided on the side wall of the wheel, and a limiting groove with a size that matches the strip-shaped limiting blocks is provided on the inner surface of the circular hole, so that the slide rod can only slide in the horizontal direction along the inner surface of the circular hole.

[0011] Preferably, the diameter of the abutting ball is adapted to the outer diameter of the end of the slide bar, so that the slide bar and the abutting ball can maintain a good tight fit.

[0012] Preferably, the outer wall of the slide bar on the side away from the wheel center has an annular groove that matches the size of the positioning ring. This effectively reduces the excessive lateral compression effect on the rotating rod when the abutting ball is squeezed by the inner surface of the track, thus affecting the normal rotation of the rotating rod.

[0013] Preferably, a hinge seat is slidably disposed on the outer wall of the contact plate near the center of the wheel, and the top end of the hinge rod is hinged to the hinge seat. At the same time, a straight groove with a diameter adapted to the outer diameter of the transmission rod is opened at the center of the hinge rod, and the transmission rod is disposed through the straight groove. Thus, when the slide rod slides horizontally towards the center of the wheel along the inner wall of the wheel, the transmission rod and the straight groove work together to make the top end of the hinge rod pry the hinge seat and the contact plate, causing it to slide horizontally away from the center of the wheel along the inner surface of the sliding cavity.

[0014] Preferably, the wheel is provided with a negative pressure assembly, which includes a fixed plate. The fixed plate is fixedly installed on the inner surface of the sliding cavity. An elastic airbag is fixedly installed on the side wall of the fixed plate. An L-shaped plate is slidably installed on the inner surface of the sliding cavity. The end of a support rod is hinged to the right outer wall of the L-shaped plate. The other end of the support rod is hinged to the side wall of the contact plate. One end of an air guide tube is fixedly connected to the side wall of the elastic airbag. The other end of the air guide tube is fixedly connected to the outer wall of the contact plate near the wheel. A diffusion cavity is opened inside the contact plate. A rubber strip is fixedly installed on the outer wall of the contact plate away from the center of the wheel.

[0015] Preferably, the number of rubber strips is set in multiple groups, and the multiple groups of rubber strips are evenly distributed in a linear array on the outer wall of the contact plate. The right outer wall of the contact plate is provided with several groups of vent holes, and the vent holes are located in the gap between two adjacent groups of rubber strips. This allows the rubber strips to deflect and deform when the contact plate contacts the inner surface of the track, thereby sealing the vent holes. At this time, due to the gas being discharged from the elastic airbag, a negative pressure state is formed inside the elastic airbag.

[0016] Preferably, the wheel is provided with a deceleration mechanism, which includes deceleration teeth. The deceleration teeth are fixedly installed on the upper and lower outer walls of the slide rod. A transmission column is fixedly installed on the inner wall of the wheel. A deceleration plate passes through the transmission column and is rotatably connected to the transmission column. A crossbar is fixedly installed on the side wall of the deceleration plate. A spiral spring is fixedly connected to the inner wall of the wheel.

[0017] Preferably, the deceleration gear has a serrated groove on the inclined surface away from the wheel center, and the crossbar is provided on the outer wall of the deceleration plate near the wheel center, so that when the slide bar moves relative to the wheel towards the wheel center, the deceleration plate will not excessively obstruct the movement of the deceleration gear and the slide bar.

[0018] Preferably, the side wall of the speed reducer is provided with a circular groove with a diameter larger than the maximum outer diameter of the second spiral spring, and the other end of the second spiral spring is fixedly connected to the bottom inner surface of the circular groove, so that the second spiral spring can always provide a stable transmission effect for the speed reducer.

[0019] Compared with the prior art, the present invention provides a material transfer device for a tunneling machine, which has the following advantages:

[0020] 1. The material transfer device for this tunneling machine is equipped with a contact component to prevent derailment between the wheels and the track due to braking or deceleration during operation. This component allows the contact plate to slide horizontally away from the wheel center along the inner surface of the sliding cavity, thus contacting the lateral inner surface of the external track. This ensures the grip of the wheels on the track, guarantees the stability of the wheel travel, and prevents the wheels from slipping on the track. It also prevents the wheels from derailing after braking and stopping during material transfer, which could lead to the vehicle overturning and thus ensure the safety of material transfer.

[0021] 2. The material transfer device for this tunneling machine is equipped with a negative pressure component to ensure that the contact plates on the side of the wheels can fit more tightly against the inner surface of the track and prevent the wheels from slipping or derailing. This allows the negative pressure generated by the compressed elastic airbag to be controlled by the air pipe to diffuse the cavity and the contact plates to be more stably adsorbed onto the inner surface of the track, thus ensuring the relative stability between the wheels and the track and effectively preventing relative displacement when the wheels and the track come into contact, thereby ensuring the safety of the vehicle body transportation.

[0022] 3. The material transfer device for this tunneling machine, in order to prevent the sliding rod from causing excessive shaking of the contact ball on the wheel when the contact component on the wheel loses contact with the track, thus affecting the stable operation of the wheel, is equipped with a deceleration mechanism. When the sliding rod moves away from the wheel center relative to the wheel, the horizontal bar on the deceleration plate will cooperate with the aforementioned sawtooth groove, effectively reducing the movement speed of the deceleration gear and the sliding rod. This results in a slower running speed when the sliding rod drives the contact ball to return to its original position, so as to avoid its horizontal movement affecting the stable operation of the wheel, thereby ensuring the transportation safety of the vehicle body. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the wheel structure of the present invention;

[0025] Figure 3 This is a schematic diagram of a partial cross-sectional view of the wheel structure of the present invention;

[0026] Figure 4 This is a partial three-dimensional structural diagram of the contact component of the present invention;

[0027] Figure 5 This is a schematic diagram of a partial explosion of the contact component of the present invention;

[0028] Figure 6 This is a partial explosion diagram of the speed reducer of the present invention.

[0029] In the diagram: 1. Vehicle body; 2. Track; 3. Mounting plate; 4. Wheel; 5. Slide rod; 6. Mounting disc; 7. Clamping spring; 8. Rotating rod; 9. Abutting ball; 10. First spiral spring; 11. Positioning ring; 12. Hinge rod; 13. Contact plate; 14. Transmission rod; 15. Fixing plate; 16. Elastic airbag; 17. L-shaped plate; 18. Support rod; 19. Air duct; 20. Diffusion chamber; 21. Rubber strip; 22. Reduction gear; 23. Transmission column; 24. Reduction plate; 25. Crossbar; 26. Second spiral spring. Detailed Implementation

[0030] like Figure 1-6As shown, the present invention provides a technical solution: a material transfer device for a tunneling machine, comprising a vehicle body 1 and a track 2. A mounting plate 3 is fixedly installed on the bottom outer wall of the vehicle body 1. A wheel 4 is rotatably mounted on the side wall of the mounting plate 3. A contact assembly is provided inside the wheel 4, the contact assembly including a sliding rod 5. The sliding rod 5 passes through the side wall of the wheel 4 and is slidably connected to the side wall of the wheel 4. A mounting plate 6 is fixedly installed on the outer wall of the sliding rod 5 near the center of the wheel 4. An end of a clamping spring 7 is fixedly connected to the side wall of the mounting plate 6, and the other end of the clamping spring 7 is fixedly... A rotating rod 8 is rotatably mounted on the inner wall of the slide rod 5 away from the wheel 4. A contact ball 9 is fixedly connected to the end of the rotating rod 8. The end of a spiral spring 10 is fixedly connected to the arc-shaped outer wall of the rotating rod 8. The other end of the spiral spring 10 is fixedly connected to the inner wall of the slide rod 5. A positioning ring 11 is fixedly mounted on the left outer wall of the contact ball 9. The bottom end of a hinge rod 12 is hinged to the top inner wall of the slide rod 5. A sliding cavity is opened on the side wall of the wheel 4. A contact plate 13 is slidably connected to the inner wall of the sliding cavity. A transmission rod 14 is fixedly mounted on the inner surface of the sliding cavity.

[0031] In one embodiment of the present invention, the end of the track 2 is concave, and the width of the groove at the center of the track 2 is adapted to the thickness of the wheel 4, so that the wheel 4 can roll in the groove at the center of the track 2, thereby ensuring the stable operation of the wheel 4 and thus ensuring the stable working state of the transfer trolley. In addition, there are two sets of contact components, and the two sets of contact components are mirror images of each other on the left and right outer walls of the wheel 4. Specifically, each set of contact components has several components, and the several contact components are evenly distributed in a circumferential array on the side wall of the wheel 4, so that the contact components can always cooperate with the track 2 to ensure the stability of the wheel 4 during rotation. At the same time, strip-shaped limiting blocks are provided on the left and right outer walls of the slide bar 5, and a circular hole with a diameter adapted to the outer diameter of the slide bar 5 is provided on the side wall of the wheel 4, and a limiting groove with a size adapted to the strip-shaped limiting block is provided on the inner surface of the circular hole. This allows the slide rod 5 to slide only horizontally along the inner surface of the circular hole. Furthermore, the clamping spring 7 is sleeved on the outside of the slide rod 5, so that the slide rod 5 can guide and restrict the deformation direction of the clamping spring 7. Specifically, the clamping spring 7 always maintains a horizontal deflection when compressed or stretched, and will not deflect vertically under its own weight. This ensures that the clamping spring 7 can always provide a stable transmission effect for the mounting plate 6. In addition, the diameter of the abutment ball 9 is matched with the outer diameter of the end of the slide rod 5, so that the slide rod 5 and the abutment ball 9 can maintain a good tight fit. At the same time, an annular groove matching the size of the positioning ring 11 is opened on the outer wall of the side of the slide rod 5 away from the center of the wheel 4, which effectively reduces the excessive lateral compression effect on the rotating rod 8 when the abutment ball 9 is compressed by the inner surface of the track 2, thus affecting the normal rotation effect of the rotating rod 8.

[0032] In an embodiment of the present invention, a circular groove with a diameter larger than the maximum diameter of the spiral spring 10 is formed on the inner wall of the slide rod 5 on the side away from the center of the wheel 4. The spiral spring 10 is disposed inside the circular groove and sleeved on the arc-shaped outer wall of the rotating rod 8. This ensures that the rotating rod 8 and the abutment ball 9 can always receive a stable transmission effect. Specifically, when the abutment ball 9 is squeezed by the lateral inner surface of the track 2, it can effectively reduce the possibility of jamming between the abutment ball 9 and the track 2, so that the abutment ball 9 can drive the slide rod 5 to move horizontally towards the center of the wheel 4 along the inner wall of the wheel 4. In addition, a hinge seat is slidably disposed on the outer wall of the contact plate 13 on the side near the center of the wheel 4, and the top end of the hinge rod 12 is hinged to the hinge seat. At the same time, the middle of the hinge rod 12... A straight groove with a diameter matching the outer diameter of the transmission rod 14 is provided at the center, and the transmission rod 14 passes through the straight groove. When the slide rod 5 slides horizontally towards the center of the wheel 4 along the inner wall of the wheel 4, it works with the transmission rod 14 and the straight groove so that the top of the hinge rod 12 pries the hinge seat and the contact plate 13, causing it to slide horizontally away from the center of the wheel 4 along the inner surface of the sliding cavity, and then contact the lateral inner surface of the outer track 2. This ensures the gripping force of the wheel 4 on the track 2, ensures the stability of the wheel 4, and prevents the wheel 4 from slipping on the track 2. It also prevents the wheel 4 from derailing after the vehicle body 1 stops during material transfer, which could cause the vehicle body 1 to overturn, thus ensuring the safety of material transfer.

[0033] In addition, to ensure that the contact plate 13 on the side of the wheel 4 can fit more tightly against the inner side surface of the track 2 and prevent the wheel 4 from slipping or derailing, a negative pressure assembly is provided inside the wheel 4. The negative pressure assembly includes a fixed plate 15. The fixed plate 15 is fixedly installed on the inner surface of the sliding cavity. An elastic airbag 16 is fixedly installed on the side wall of the fixed plate 15. An L-shaped plate 17 is slidably installed on the inner surface of the sliding cavity. The end of a support rod 18 is hinged to the right outer wall of the L-shaped plate 17. The other end of the support rod 18 is hinged to the side wall of the contact plate 13. One end of an air guide pipe 19 is fixedly connected to the side wall of the elastic airbag 16. The other end of the air guide pipe 19 is fixedly connected to the outer wall of the contact plate 13 on the side closer to the wheel 4. A diffusion cavity 20 is opened inside the contact plate 13. A rubber strip 21 is fixedly installed on the outer wall of the contact plate 13 on the side away from the center of the wheel 4.

[0034] In an embodiment of the present invention, the width of the fixing plate 15 is adapted to the width of the L-shaped plate 17, so that the fixing plate 15 and the L-shaped plate 17 can form a rectangular space on one side. Specifically, the size of the rectangular space is adapted to the size of the elastic airbag 16 in the initial state. In addition, both ends of the elastic airbag 16 are fixedly connected to the side wall of the fixing plate 15 and the side wall of the L-shaped plate 17, respectively. This allows the L-shaped plate 17 to compress the elastic airbag 16 when it slides along the inner surface of the sliding cavity. At the same time, the air guide tube 19 passes through the L-shaped plate 17, and the L-shaped plate 17 is fixedly connected to the air guide tube 19. This allows the gas inside the elastic airbag 16 to be output outward through the air guide tube 19 when the L-shaped plate 17 compresses the elastic airbag 16. The air guide tube 19 is a silicone hose, so it will not interfere with the movement of the contact plate 13. Furthermore, the other end of the air guide tube 19 is connected to the diffusion cavity 20. This allows the gas output from the air duct 19 to enter the interior of the diffusion chamber 20. Simultaneously, multiple sets of rubber strips 21 are arranged in a linear array and evenly distributed on the outer wall of the contact plate 13. Several sets of vent holes are provided on the right outer wall of the contact plate 13, and these vent holes are located in the gaps between adjacent sets of rubber strips 21. When the contact plate 13 contacts the inner side surface of the track 2, the rubber strips 21 deflect and deform, thus sealing the vent holes. At this time, due to the gas discharge from the elastic airbag 16, a negative pressure state is formed inside the elastic airbag 16. Under these conditions, the diffusion chamber 20 and the contact plate 13 can be more stably adhered to the inner side surface of the track 2 through the air duct 19, ensuring the relative stability between the wheel 4 and the track 2, effectively preventing relative displacement when the wheel 4 contacts the track 2, and thus ensuring the safety of the vehicle body 1 during transportation.

[0035] In addition, to prevent the sliding rod 5 from causing excessive shaking of the abutment ball 9 on the wheel 4 when the contact component on the wheel 4 loses contact with the track 2, thus affecting the stable operation of the wheel 4, a deceleration mechanism is provided inside the wheel 4. The deceleration mechanism includes a deceleration gear 22. The deceleration gear 22 is fixedly installed on the upper and lower outer walls of the sliding rod 5. A transmission column 23 is fixedly installed on the inner wall of the wheel 4. The transmission column 23 passes through the deceleration plate 24, and the deceleration plate 24 is rotatably connected to the transmission column 23. A crossbar 25 is fixedly installed on the side wall of the deceleration plate 24. A spiral spring 26 is fixedly connected to the inner wall of the wheel 4.

[0036] In an embodiment of the present invention, multiple sets of reduction gears 22 are provided, and these multiple sets of reduction gears 22 are evenly distributed in a linear array on the upper and lower outer walls of the slide rod 5. A reduction plate 24 is correspondingly provided with the reduction gears 22. Specifically, the reduction plate 24 is provided between two adjacent sets of reduction gears 22. Simultaneously, a serrated groove is provided on the inclined surface of the reduction gear 22 on the side away from the center of the wheel 4, and a horizontal bar 25 is provided on the outer wall of the reduction plate 24 on the side near the center of the wheel 4. This ensures that when the slide rod 5 moves relative to the wheel 4 towards the center of the wheel 4, the reduction plate 24 does not excessively obstruct the movement of the reduction gears 22 and the slide rod 5, while the slide rod 5 moves relative to the wheel 4 away from the center of the wheel 4. When the wheel 4 moves to one side of the center, the horizontal bar 25 on the deceleration plate 24 will cooperate with the sawtooth groove mentioned above, effectively reducing the movement speed of the deceleration gear 22 and the slide bar 5. This makes the slide bar 5 move at a slower speed when it drives the ball 9 to return to its original position, so as to avoid its horizontal movement affecting the stable operation of the wheel 4, thereby ensuring the transportation safety of the vehicle body 1. In addition, a circular groove with a diameter larger than the maximum outer diameter of the spiral spring 26 is opened on the side wall of the deceleration plate 24, and the other end of the spiral spring 26 is fixedly connected to the bottom inner surface of the circular groove, so that the spiral spring 26 can always provide a stable transmission effect for the deceleration plate 24.

[0037] In this invention, after materials are placed inside the vehicle body 1, the drive device causes the vehicle body 1 and wheels 4 to move along the track 2, thereby realizing the inward and outward transportation of materials during the excavation operation of the tunneling machine. Simultaneously, to prevent derailment of the wheels 4 from occurring due to braking or deceleration during vehicle body 1 operation, a contact component is provided. This component, in conjunction with the contact between the abutment ball 9 and the track 2, allows the slide rod 5 to slide horizontally along the inner wall of the wheel 4 towards the center of the wheel 4. This, in conjunction with the transmission rod 14 and the straight groove, causes the top of the hinge rod 12 to pry open the hinge seat and the contact plate 13, thus... The wheel 4 slides horizontally away from the center of the wheel 4 along the inner surface of the sliding cavity, thus contacting the lateral inner surface of the outer track 2. This ensures the gripping force of the wheel 4 on the track 2, guarantees the stability of the wheel 4's movement, and prevents the wheel 4 from slipping on the track 2. It also prevents the wheel 4 from derailing after braking and stopping during material transfer, which could lead to the vehicle body 1 overturning. This ensures the safety of material transfer. In addition, to ensure that the contact plate 13 on the side of the wheel 4 can abut more tightly against the lateral inner surface of the track 2 and prevent the wheel 4 from slipping or derailing, a negative pressure component is provided. The movement of the contact plate 13 causes the support rod 18 to drive the L-shaped plate 17 to compress the elastic airbag 16. When the contact plate 13 contacts the inner side surface of the track 2, the rubber strip 21 will deflect and deform, thereby sealing the vent. At this time, due to the gas being discharged from the elastic airbag 16, a negative pressure state is formed inside the elastic airbag 16. At this time, the diffuser chamber 20 and the contact plate 13 can be more stably adsorbed on the inner side surface of the track 2 through the air guide pipe 19, so as to ensure the relative stability between the wheel 4 and the track 2, effectively avoid the relative displacement when the wheel 4 contacts the track 2, and thus ensure the safety of the vehicle body 1 during transportation. At the same time, in order to avoid the wheel 4 When the contact component on the upper part disengages from the track 2, the slide rod 5 causes the abutment ball 9 to wobble excessively on the wheel 4, affecting the stable operation of the wheel 4. By setting a deceleration mechanism, in conjunction with the sawtooth groove on the inclined surface of the deceleration gear 22 away from the center of the wheel 4, when the slide rod 5 moves relative to the wheel 4 away from the center of the wheel 4, the horizontal bar 25 on the deceleration plate 24 will cooperate with the sawtooth groove, effectively reducing the movement speed of the deceleration gear 22 and the slide rod 5. As a result, when the slide rod 5 drives the abutment ball 9 to return to its original position, the running speed is slower, so as to avoid its horizontal movement affecting the stable operation of the wheel 4, thereby ensuring the transportation safety of the vehicle body 1.

[0038] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A tunneling machine material transfer device for a tunneling machine, comprising a vehicle body (1) and a track (2), a mounting plate (3) is fixedly installed on the bottom outer wall of the vehicle body (1), and a wheel (4) is rotatably installed on the side wall of the mounting plate (3), characterized in that: The inside of the wheel (4) is provided with a contact assembly, which comprises: The side wall of the wheel (4) is provided with a sliding rod (5), and the sliding rod (5) is in sliding connection with the side wall of the wheel (4). The sliding rod (5) is fixedly installed with a mounting disc (6) on the outer wall of the side of the wheel (4) close to the center. The side wall of the mounting disc (6) is fixedly connected with the end of an abutting spring (7), and the other end of the abutting spring (7) is fixedly connected to the inner wall of the wheel (4). A rotating rod (8) is rotatably installed at the end of the sliding rod (5) away from the wheel (4). The end of the rotating rod (8) is fixedly connected with an abutting ball (9). The arc-shaped outer wall of the rotating rod (8) is fixedly connected with the end of a volute spring (10). The other end of the volute spring (10) is fixedly connected to the inner wall of the sliding rod (5). The left outer wall of the abutting ball (9) is fixedly installed with a positioning ring (11). The bottom end of a hinged rod (12) is hingedly connected to the top inner wall of the sliding rod (5). The side wall of the wheel (4) is provided with a sliding cavity. The inner wall of the sliding cavity is slidably connected with a contact plate (13). The inner surface of the sliding cavity is fixedly installed with a transmission rod (14).

2. The tunneling machine material transfer device of claim 1, wherein: The left and right outer walls of the sliding rod (5) are provided with strip-shaped limiting blocks. The side wall of the wheel (4) is provided with a circular hole with a diameter matching the outer diameter of the sliding rod (5). The inner surface of the circular hole is provided with a limiting sliding groove with a size matching the strip-shaped limiting blocks.

3. The tunneling machine material transfer device of claim 1, wherein: The diameter of the abutting ball (9) matches the outer diameter of the end of the sliding rod (5).

4. The tunneling machine material transfer device of claim 1, wherein: The outer wall of the side of the sliding rod (5) away from the center of the wheel (4) is provided with an annular groove with a size matching the positioning ring (11).

5. The tunneling machine material transfer device of claim 1, wherein: The contact plate (13) is slidably provided with a hinged seat on the outer wall of the side of the wheel (4) close to the center. The top end of the hinged rod (12) is hingedly connected to the hinged seat. The center of the hinged rod (12) is provided with a straight slot with a diameter matching the outer diameter of the transmission rod (14). The transmission rod (14) penetrates through the straight slot.

6. The tunneling machine material transfer device of claim 1, wherein: The inside of the wheel (4) is provided with a negative pressure assembly, which comprises a fixed plate (15). The inner surface of the sliding cavity is fixedly installed with the fixed plate (15). The side wall of the fixed plate (15) is fixedly installed with an elastic air bag (16). The inner surface of the sliding cavity is slidably installed with an L-shaped plate (17). The right outer wall of the L-shaped plate (17) is hingedly connected with the end of a support rod (18). The other end of the support rod (18) is hingedly connected to the side wall of the contact plate (13). The side wall of the elastic air bag (16) is fixedly connected with one end of a gas guide pipe (19). The other end of the gas guide pipe (19) is fixedly connected to the outer wall of the side of the contact plate (13) close to the wheel (4). The inside of the contact plate (13) is provided with a diffusion cavity (20). The outer wall of the side of the contact plate (13) away from the center of the wheel (4) is fixedly installed with a rubber strip (21).

7. The tunneling machine material transfer device of claim 6, wherein: The number of the rubber strips (21) is provided with multiple groups, and the multiple groups of rubber strips (21) are uniformly distributed in linear array on the outer wall of the contact plate (13), and the right outer wall of the contact plate (13) is provided with a plurality of groups of air holes, and the air holes are arranged in the gap between the adjacent two groups of rubber strips (21).

8. The tunneling machine material transfer device of claim 1, wherein: The inside of the wheel (4) is provided with a speed reduction mechanism, the speed reduction mechanism comprises a speed reduction gear (22), the upper and lower two sides of the slide rod (5) are fixedly installed with the speed reduction gear (22), the inner wall of the wheel (4) is fixedly installed with a transmission column (23), the transmission column (23) penetrates a speed reduction plate (24), and the speed reduction plate (24) is rotatably connected with the transmission column (23), the side wall of the speed reduction plate (24) is fixedly installed with a horizontal strip (25), and the inner wall of the wheel (4) is fixedly connected with a volute spring two (26).

9. The tunneling machine material transfer device of claim 8, wherein: The speed reduction gear (22) is provided with a sawtooth groove on the slope away from the center of the wheel (4), and the horizontal strip (25) is arranged on the outer wall of the speed reduction plate (24) close to the center of the wheel (4).

10. The tunneling machine material transfer device of claim 8, wherein: The side wall of the speed reduction plate (24) is provided with a circular groove with a diameter larger than the maximum outer diameter of the volute spring two (26), and the other end of the volute spring two (26) is fixedly connected to the inner surface of the bottom of the circular groove.

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