A star wheel driving device for a cantilevered tunneling machine shovel plate

Abstract

The utility model relates to drive device technical field, and disclose a kind of star wheel drive device for cantilever type tunneling machine shovel plate, including shovel plate, the rear side of shovel plate is equipped with feed inlet and mounting block, the both sides of feed inlet are equipped with with curved baffle, the front side of two sides curved baffle is equipped with straight baffle;The upper surface of shovel plate is symmetrically equipped with star wheel, the bottom of shovel plate is correspondingly equipped with star wheel drive motor of control star wheel rotating shaft rotation;The upper surface of shovel plate front end is symmetrically provided with first arc sliding slot and second arc sliding slot, two straight baffles and adjacent first arc sliding slot between sliding contact, two star wheel rotating shafts and adjacent second arc sliding slot between through sliding connection.The utility model can adapt to different size of incoming material, reduce the conveying adaptation problem caused by the specification change of incoming material;Cooperate adjustable star wheel and baffle structure, improve the efficiency of material gathering to feed inlet conveying.

Description

Technical Field

[0001] This utility model relates to the field of drive device technology, and in particular to a star wheel drive device for the shovel plate of a cantilever tunneling machine. Background Technology

[0002] In engineering fields such as coal mining and tunnel excavation, cantilever tunneling machines are core tunneling equipment. The star wheel drive device on its shovel plate plays a key role in transferring the coal and rock materials generated during tunneling to the scraper conveyor, which directly affects the overall efficiency and continuity of tunneling operations. Currently, the star wheel drive devices for cantilever tunneling machines on the market have many shortcomings in practical applications: On the one hand, the star wheel positions are mostly fixed, making it impossible to flexibly adjust the spacing according to the particle size of coal and rock materials during tunneling. When the particle size of the incoming material varies greatly, the material is prone to getting stuck between the star wheels or the conveying speed is slow, resulting in poor adaptability. On the other hand, the angle of the bucket baffle is fixed, making it difficult to form a suitable guide channel when facing different material volumes, causing the material to spill to both sides of the shovel during the conveying process and reducing the feeding efficiency.

[0003] Therefore, those skilled in the art urgently need to develop a star wheel drive device for the shovel of a cantilever tunneling machine. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a star wheel drive device for the shovel plate of a cantilever tunneling machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a star wheel drive device for a cantilever tunneling machine shovel plate, including a shovel plate, a feed inlet provided in the middle of the rear side of the shovel plate, mounting blocks provided at both ends of the rear side of the shovel plate, curved baffles connected to the shovel plate symmetrically provided on the left and right sides of the feed inlet, and straight baffles provided on the front side of both curved baffles. Star wheels are symmetrically arranged on the left and right sides of the upper surface of the shovel plate. Both star wheels are rotatably connected to the shovel plate through star wheel shafts. A star wheel drive motor for controlling the rotation of the star wheel shafts is correspondingly provided at the bottom of the shovel plate. The upper surface of the shovel plate has a first arc-shaped groove symmetrically formed at the front end and a second arc-shaped groove symmetrically formed at the rear end. The centers of the two first arc-shaped grooves are far apart from each other, while the centers of the two second arc-shaped grooves are close together. The two straight baffles slide in contact with the adjacent first arc-shaped grooves, and the two star wheel shafts slide through the adjacent second arc-shaped grooves.

[0006] Preferably, the adjacent sides of the linear baffle and the curved baffle are connected by linear baffle shafts, and both linear baffle shafts are rotatably connected to the shovel. The bottom of the shovel is provided with a linear baffle drive motor for controlling the rotation of the linear baffle shafts.

[0007] Preferably, both sides of the bottom of the shovel plate are provided with sliders that are slidably connected to the first arc-shaped groove, and both sliders extend out of the first arc-shaped groove and are connected to the corresponding straight baffle.

[0008] Preferably, the star wheel drive motor is connected to the bottom of the shovel plate, and the output end of the star wheel drive motor is connected to the corresponding star wheel shaft via a chain.

[0009] Preferably, the bottom of both star wheel shafts is provided with locking blocks, and the other end of both locking blocks is connected to the shovel plate.

[0010] Preferably, the bottom of the shovel plate is detachably equipped with a protective box, and the star wheel drive motor, chain and locking block are all located inside the protective box.

[0011] Preferably, the openings of the first and second arc-shaped grooves at the bottom of the shovel plate are larger than the openings at the top.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The position of the star wheel can be adjusted by sliding along the second arc-shaped groove through the star wheel shaft, and the angle of the straight baffle can be adjusted along the first arc-shaped groove through the slider, which can adapt to materials of different sizes and reduce the conveying adaptation problem caused by changes in material specifications. 2. The curved baffle and the straight baffle are connected to form a flow channel to avoid spillage during material conveying; the star wheel drive motor drives the star wheel to rotate through chain transmission, and with the adjustable star wheel and baffle structure, the efficiency of material gathering and conveying to the feed port is improved. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a front structural sectional view of the present invention; Figure 3 This is a schematic diagram of the operation process of this utility model.

[0014] In the diagram: 1-shovel plate; 2-curved baffle; 3-straight baffle; 4-feed inlet; 5-mounting block; 6-star wheel; 7-first arc-shaped slide groove; 8-slider; 9-straight baffle shaft; 10-star wheel drive motor; 11-chain; 12-second arc-shaped slide groove; 13-locking block; 14-protective box. Detailed Implementation

[0015] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figures 1-3 This utility model provides an embodiment: a star wheel drive device for a cantilever tunneling machine shovel, including a shovel 1, a feed inlet 4 provided in the middle of the rear side of the shovel 1, which is adapted to the feed end of the tunneling machine scraper conveyor, and mounting blocks 5 provided at both ends of the rear side of the shovel 1 for connecting with the main body of the tunneling machine; curved baffles 2 connected to the shovel 1 are symmetrically provided on the left and right sides of the feed inlet 4, and straight baffles 3 are provided on the front side of both curved baffles 2, and the curved baffles 2 and the corresponding straight baffles 3 are connected.

[0019] Star wheels 6 are symmetrically arranged on the left and right sides of the upper surface of the shovel plate 1. Both star wheels 6 are rotatably connected to the shovel plate 1 through star wheel shafts. A star wheel drive motor 10 for controlling the rotation of the star wheel shafts is provided at the bottom of the shovel plate 1. The center positions of the two second arc-shaped slide grooves 12 coincide with the axis of the adjacent star wheel drive motor 10.

[0020] The upper surface of the shovel plate 1 has a first arc-shaped groove 7 symmetrically formed on the left and right front end, and a second arc-shaped groove 12 symmetrically formed on the left and right rear end of the upper surface of the shovel plate 1. The centers of the two first arc-shaped grooves 7 are far apart from each other, and the centers of the two second arc-shaped grooves 12 are close to each other. The two straight baffles 3 are in sliding contact with the adjacent first arc-shaped grooves 7. The two star wheel shafts are slidably connected through the adjacent second arc-shaped grooves 12. The bottom of the two star wheel shafts is provided with a locking block 13, and the other end of the two locking blocks 13 is connected to the shovel plate 1 to restrict the axial movement of the shaft.

[0021] Furthermore, the openings of the first arc-shaped chute 7 and the second arc-shaped chute 12 at the bottom of the shovel plate 1 are larger than the openings at the top, which can prevent materials from falling through the gaps.

[0022] Furthermore, the adjacent sides of the straight baffle 3 and the curved baffle 2 are connected to straight baffle shafts 9. The center positions of the two first arc-shaped sliding grooves 7 coincide with the axis of the adjacent straight baffle shafts 9. The two straight baffle shafts 9 are rotatably connected to the shovel plate 1. The bottom of the shovel plate 1 is equipped with a straight baffle drive motor that controls the rotation of the straight baffle shafts 9. By controlling the rotation of the straight baffle 3 through the straight baffle drive motor, the function of pushing material can be realized when shoveling material, thereby improving the feeding efficiency.

[0023] Furthermore, both sides of the bottom of the shovel plate 1 are provided with sliders 8 that are slidably connected to the first arc-shaped groove 7. Both sliders 8 extend out of the first arc-shaped groove 7 and are connected to the corresponding straight baffle 3.

[0024] Furthermore, the star wheel drive motor 10 is connected to the bottom of the shovel plate 1. The output end of the star wheel drive motor 10 is equipped with a sprocket, which is connected to the sprocket on the corresponding star wheel shaft via a chain 11, with a transmission ratio of 2:1. When it is necessary to adjust the position of the two star wheels 6, the corresponding locking block 13 is removed, and the star wheel shaft slides in the second arc-shaped groove 12. After adjustment, the locking block 13 is connected to the shovel plate 1. The position of the two star wheels 6 can be adjusted according to the size of the incoming material, thereby improving the feeding efficiency.

[0025] Furthermore, the bottom of the shovel plate 1 is detachably equipped with a protective box 14, and the star wheel drive motor 10, chain 11 and locking block 13 are all located inside the protective box 14.

[0026] Working principle of this utility model: First, use the mounting blocks 5 at both ends of the rear side of the shovel plate 1 to connect and fix the entire device to the main body of the tunneling machine. At the same time, ensure that the feed port 4 in the middle of the rear side of the shovel plate 1 is precisely aligned with the feed end of the tunneling machine scraper conveyor. Then, assemble the protective box 14 at the bottom of the shovel plate 1 to put the star wheel drive motor 10, chain 11 and locking block 13 in a protected state, and check the stability of the connection of each component. 2. To adapt to different incoming material conditions, first adjust the position of the star wheel 6 according to the size of the incoming material: remove the corresponding locking block 13, push the star wheel shaft to slide along the second arc-shaped slide groove 12 (because the center of the second arc-shaped slide groove coincides with the axis of the star wheel drive motor 10, the transmission structure position is adapted during the sliding process), after the star wheel 6 is adjusted to a suitable distance, re-fix the locking block 13 to limit the axial movement of the shaft; at the same time, start the linear baffle drive motor to drive the linear baffle shaft 9 to rotate, and the linear baffle 3 slides along the first arc-shaped slide groove 7 with the slider 8 (the center of the first arc-shaped slide groove coincides with the axis of the linear baffle shaft 9 to ensure stable adjustment of the baffle), so that the linear baffle 3 and the curved baffle 2 form a suitable guide channel to prepare for subsequent feeding. 3. Start the star wheel drive motor 10. The motor output is driven by the chain 11 through the sprocket (transmission ratio 2:1), which drives the star wheel shaft and star wheel 6 to rotate synchronously. Under the pushing action of the star wheel 6, the coal and rock material at the front end of the shovel 1 gathers towards the center along the channel formed by the curved baffle 2 and the straight baffle 3. At the same time, start the straight baffle drive motor, which drives the straight baffle shaft 9 to rotate inward to realize the function of pushing material. Finally, the material is transported to the tunneling machine scraper conveyor through the feed port 4 to complete the material transfer. IV. During operation, the protection box 14 protects the star wheel drive motor 10, chain 11 and other components, preventing dust and water mist from affecting the components. The locking block 13 continuously restricts the axial movement of the star wheel shaft, ensuring the stable rotation of the star wheel 6. The sliding fit between the slider 8 and the first arc-shaped slide groove 7, and the through sliding fit between the star wheel shaft and the second arc-shaped slide groove 12, ensure the flexible operation of each adjustment structure and maintain the continuous and reliable operation of the device.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A star wheel drive device for a shovel plate of a cantilever tunneling machine, comprising a shovel plate, characterized in that: The shovel plate has a feed inlet in the middle of its rear side, and mounting blocks are provided at both ends of the rear side of the shovel plate. Curved baffles connected to the shovel plate are symmetrically provided on the left and right sides of the feed inlet, and straight baffles are provided on the front side of both curved baffles. Star wheels are symmetrically arranged on the left and right sides of the upper surface of the shovel plate. Both star wheels are rotatably connected to the shovel plate through star wheel shafts. A star wheel drive motor for controlling the rotation of the star wheel shafts is correspondingly provided at the bottom of the shovel plate. The upper surface of the shovel plate has a first arc-shaped groove symmetrically formed at the front end and a second arc-shaped groove symmetrically formed at the rear end. The centers of the two first arc-shaped grooves are far apart from each other, while the centers of the two second arc-shaped grooves are close together. The two straight baffles slide in contact with the adjacent first arc-shaped grooves, and the two star wheel shafts slide through the adjacent second arc-shaped grooves.

2. The star wheel drive device for the shovel blade of a cantilever tunneling machine according to claim 1, characterized in that: The adjacent sides of the straight baffle and the curved baffle are connected to straight baffle shafts, and both straight baffle shafts are rotatably connected to the shovel. The bottom of the shovel is provided with a straight baffle drive motor to control the rotation of the straight baffle shafts.

3. The star wheel drive device for the shovel blade of a cantilever tunneling machine according to claim 2, characterized in that: Both sides of the bottom of the shovel plate are provided with sliders that are slidably connected to the first arc-shaped groove. Both sliders extend out of the first arc-shaped groove and are connected to the corresponding straight baffle.

4. The star wheel drive device for the shovel blade of a cantilever tunneling machine according to claim 1, characterized in that: The star wheel drive motor is connected to the bottom of the shovel plate, and the output end of the star wheel drive motor is connected to the corresponding star wheel shaft via a chain.

5. The star wheel drive device for the shovel blade of a cantilever tunneling machine according to claim 4, characterized in that: Both star wheel shafts have locking blocks at their bottom, and the other end of each locking block is connected to the shovel plate.

6. The star wheel drive device for the shovel blade of a cantilever tunneling machine according to claim 5, characterized in that: The bottom of the shovel plate is detachably equipped with a protective box, and the star wheel drive motor, chain and locking block are all located inside the protective box.

7. The star wheel drive device for the shovel blade of a cantilever tunneling machine according to claim 1, characterized in that: The openings of the first and second arc-shaped chute at the bottom of the shovel plate are larger than the openings at the top.

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