A first conveyor and tunnel boring machine

Abstract

The present invention discloses a first conveyor and a tunnel boring machine. The first conveyor includes: a fixed groove, a swing groove, a driving device and a follow-up tensioning device. Among them, the swing groove is rotatably connected to the fixed groove; the chain transmission mechanism includes a driving chain arranged along the extension direction of the fixed groove and the swing groove and a driving device slidably connected to the swing groove and used to drive the driving chain to rotate; the follow-up tensioning device is connected to the driving device and can move following the swing of the swing groove to drive the driving device to dynamically adjust the tightness of the driving chain. The first conveyor provided by the present invention can realize the left and right swing of the first conveyor, which can not only be applicable to the material transportation form of the laneway three-transport belt hanging on the left or right tunnel wall, but also ensure that the entire driving chain maintains the same tightness during the swing of the swing groove.

Description

Technical Field

[0001] The present invention relates to the technical field of tunneling equipment, and particularly to a first conveyor and a roadheader. Background Art

[0002] A roadheader is a commonly used device for underground operations. When working normally underground in a coal mine, the coal in front of the roadheader is carried into the first conveyor of the roadheader by a star wheel crawler, and then transported by the first conveyor to the second belt conveyor connected behind the roadheader. After the second belt conveyor raises the height, it is connected to the third belt conveyor, dump truck, shuttle car, etc. behind again, and the materials are continuously transported backward.

[0003] The traditional first conveyor does not have a tail swing, and the discharge port of the traditional first conveyor is fixed and cannot be applied to the material transportation form where the three-conveyor belt in the roadway is hung on the left or right side wall of the tunnel. Summary of the Invention

[0004] According to one aspect of the present invention, a first conveyor is provided, including:

[0005] A fixed groove;

[0006] A swing groove, rotatably connected to the fixed groove;

[0007] A chain transmission mechanism, including a driving chain arranged along the extending direction of the fixed groove and the swing groove, and a driving device slidably connected to the swing groove and used for driving the driving chain to rotate;

[0008] A follow-up tensioning device, connected to the driving device, and capable of moving following the swing of the swing groove to drive the driving device to dynamically adjust the tightness of the driving chain.

[0009] Optionally, the follow-up tensioning device includes:

[0010] A limiting plate, arranged outside the bottom of the fixed groove;

[0011] A tensioning oil cylinder, arranged outside both sides of the side wall of the swing groove; one end of the tensioning oil cylinder is connected to the driving device to drive the driving device to move relative to the swing groove in the front-back direction along the swing groove;

[0012] A follow-up component, arranged on the swing groove, and the other end of the tensioning oil cylinder is connected to the follow-up component;

[0013] The follow-up component includes a limiting part abutted against the limiting plate, and the limiting part can slide relative to the limiting plate in the left-right direction of the fixed groove following the swing of the swing groove.

[0014] Optionally, the follower assembly includes:

[0015] A bracket, with both ends of the bracket respectively connected to the other end of the tensioning cylinder;

[0016] A push rod, arranged outside the bottom of the swing groove; one end of the push rod is fixedly connected to the bracket, and the limiting portion is set at the end of the push rod away from the bracket.

[0017] Optionally, one end of the limiting plate close to the swing groove has an arc-shaped structure;

[0018] The limiting portion further includes a roller, arranged at the other end of the push rod, and the surface of the roller is tangent to the arc surface of the arc-shaped structure.

[0019] Optionally, the center of the arc surface of the arc-shaped structure coincides with the rotation center of the swing groove.

[0020] Optionally, the first conveyor further includes:

[0021] A guide groove, fixedly arranged outside the bottom of the swing groove, for positioning the push rod, and the push rod can slide along the guide groove.

[0022] Optionally, the first conveyor further includes:

[0023] A cover plate, connected to the groove wall of the guide groove and covering the notch of the guide groove.

[0024] Optionally, the outer sides of the two side arms of the swing groove have first sliding grooves;

[0025] The follower assembly further includes: a first sliding plate arranged in the first sliding groove, and the first sliding plate can slide in the first sliding groove and is used to connect the bracket and the tensioning cylinder.

[0026] Optionally, the outer sides of the two side arms of the swing groove have second sliding grooves;

[0027] The follower assembly further includes a second sliding plate arranged in the second sliding groove, and the second sliding plate can slide in the second sliding groove and is used to connect the tensioning cylinder and the driving device.

[0028] According to the second aspect of the present invention, a tunneling machine is provided, including:

[0029] A device main body, and the first conveyor according to any one of the first aspect, and the first conveyor is connected to the device main body.

[0030] The present invention provides a first conveyor and a tunneling machine. In the first conveyor provided by the present invention, by providing a fixed groove and a swing groove that can swing relative to the fixed groove, the left - right swing of the first conveyor can be realized. It can not only be applicable to the material transportation form where the three - belt conveyor in the roadway is hung on the left or right side wall of the tunnel. By providing a follow - up tensioning device, the entire driving chain can be ensured to maintain the same tightness during the swinging process of the swing groove, achieving the purpose of follow - up tensioning.

[0031] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0033] Figure 1 Shows a schematic structural diagram of the first conveyor according to an embodiment of the present invention;

[0034] Figure 2 Shows a schematic structural diagram of the fixed groove of the first conveyor according to an embodiment of the present invention;

[0035] Figure 3 Shows a bottom - view schematic diagram of the fixed groove of the first conveyor according to an embodiment of the present invention;

[0036] Figure 4 Shows a schematic structural diagram of the swing groove of the first conveyor according to an embodiment of the present invention;

[0037] Figure 5 Shows a bottom - view schematic diagram of the swing groove of the first conveyor according to an embodiment of the present invention;

[0038] Figure 6 Shows a bottom - view schematic diagram of the first conveyor according to an embodiment of the present invention;

[0039] Figure 7 Shows a partial enlarged schematic diagram of the first conveyor according to an embodiment of the present invention;

[0040] Figure 8 Shows a partial enlarged schematic diagram of the first conveyor according to an embodiment of the present invention;

[0041] Figure 9 Shows a partial enlarged schematic diagram of the first conveyor according to an embodiment of the present invention;

[0042] Among them, 100 - fixed groove, 110 - rotating pin shaft, 200 - swinging groove, 210 - first sliding groove, 211 - first sliding plate, 220 - bracket, 230 - second sliding groove, 231 - second sliding plate, 240 - mounting groove, 250 - swinging oil cylinder, 300 - chain transmission mechanism, 310 - driving chain, 320 - driving device, 400 - follower tensioning device, 410 - limiting plate, 411 - arc structure; 420 - follower assembly, 421 - limiting part; 422 - push rod, 430 - tensioning oil cylinder, 440 - guiding groove, 441 - oil cup, 442 - cover plate, 500 - first fixing assembly, 510 - first pin shaft, 520 - first pressing plate, 530 - first bolt, 600 - second fixing assembly, 610 - second pin shaft, 620 - second pressing plate, 630 - second bolt, 700 - third fixing assembly, 710 - third pin shaft, 720 - circlip, 730 - third bolt. Detailed implementation mode

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0045] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0047] Figure 1 The structural schematic diagram of the first conveyor of the embodiment of the present invention is shown. Referring to Figure 1 It can be seen that the first conveyor provided by the embodiment of the present invention may include: a fixed groove 100, a swing groove 200, a chain transmission mechanism 300, and a follow-up tensioning device 400. Among them, the swing groove 200 can be connected to the fixed groove 100 through a rotating pin shaft 110; the chain transmission mechanism 300 includes a driving chain 310 arranged along the extending direction of the fixed groove 100 and the swing groove 200, and a driving device 320 slidably connected to the swing groove 200 and used to drive the driving chain 310 to rotate. Optionally, the swing groove 200 may be connected with a swing oil cylinder 250, and swing left and right relative to the fixed groove 100 under the control of the swing oil cylinder 250. The follow-up tensioning device 400 is connected to the driving device 320 and can move along with the swing of the swing groove 200 to drive the driving device 320 to dynamically adjust the tightness of the driving chain 310.

[0048] The embodiment of the present invention provides a first conveyor. By setting the fixed groove 100 and the swing groove 200 that can swing relative to the fixed groove 100, the left and right swing of the first conveyor can be realized, which can not only be applicable to the material transportation form where the three-conveyor belt in the roadway is hung on the left or right side wall of the cave. By setting the follow-up tensioning device 400, it is ensured that the entire driving chain 310 remains within the preset tightness range during the swing of the swing groove 200.

[0049] Optionally, as Figure 6 shown, the follow-up tensioning device 400 includes a tensioning oil cylinder 430, a follow-up component 420, and is arranged outside the bottom of the fixed groove 100. Among them, the tensioning oil cylinder 430 is arranged on the outer sides of both sides of the side wall of the swing groove 200; one end of the tensioning oil cylinder 430 is connected to the driving device 320 to drive the driving device 320 to move relative to the swing groove 200 in the front and rear directions of the swing groove 200 to control the tension of the driving chain 310. The follow-up component 420 is arranged on the swing groove 200, and the other end of the tensioning oil cylinder 430 is connected to the follow-up component 420. In addition, the follow-up component 420 includes a limiting portion 421 that abuts against the limiting plate 410, and the limiting portion 421 can slide relative to the limiting plate 410 along the left and right directions of the fixed groove 100 following the swing of the swing groove 200.

[0050] Combined with Figures 1 - 6It can be known that the first conveyor of the roadheader provided in this embodiment is symmetrically distributed. The follow-up tensioning device 400 may include tensioning cylinders 430 arranged on both sides of the swing groove 200. One end of the tensioning cylinder 430 is connected to the swing groove 200, and the other end is connected to the driving device 320, and is used to drive the forward and backward movement of the driving device 320 to control the tension of the driving chain 310. As Figure 4 shown, mounting grooves 240 are formed on both sides of the tail of the swing groove 200. The driving device 320 is installed in the mounting grooves 240 and can slide forward and backward in the mounting grooves 240.

[0051] Furthermore, referring to Figure 6 it can be known that the follow-up component 420 may include a bracket 220 and a push rod 422. The bracket 220 may be a U-shaped frame. In addition, both ends of the bracket 220 are respectively connected to the other end of the tensioning cylinder 430. The limiting part (421) is arranged at the end of the push rod 422 away from the bracket 220. The push rod 422 is arranged outside the bottom of the swing groove 200; one end of the push rod 422 is fixedly connected to the bracket 220. As Figure 6 shown, one end of the limiting plate 410 close to the swing groove 200 has an arc-shaped structure 411. Specifically, the limiting plate 410 may be an arc-shaped plate, and one end of it close to the swing groove 200 may have an arc-shaped structure 411 formed by an arc surface. The limiting part 421 includes a roller. The roller can be used as an implementation manner of the limiting part 421 and is arranged at the other end of the push rod 422. The surface of the roller is tangent to the arc surface of the arc-shaped structure 411, and the roller can roll along the arc surface of the arc-shaped structure 411 under the action of the push rod 422.

[0052] The follow-up tensioning device 400 further includes a second fixing component 600 for fixing the push rod 422 to the bottom of the bracket 220; as Figure 6 、 Figure 8 shown, the second fixing component 600 includes: a second pin shaft 610, a second pressing plate 620 and a second bolt 630; the second pin shaft 610 is used for fixedly connecting the bracket 220 and the push rod 422; the second pressing plate 620 is fixed to the bottom of the bracket 220 through the second bolt 630. The second pin shaft 610 has an annular groove, and the second pressing plate 620 can be stuck in the annular groove to perform axial limiting on the second pin shaft 610. For example, the second pin shaft 610 can be inserted into the bracket 220 and the push rod 422 at the same time, and the second pressing plate 620 can be fixed in the annular groove on the second pin shaft 610 through the second screw, so as to realize the fixed connection between the push rod 422 and the bracket 220.

[0053] In this embodiment, the limiting plate 410 can be an arc-shaped welding plate, which can be welded to the bottom of the fixing groove 100. Additionally, the center of the arc surface of the arc-shaped structure 411 of the limiting plate 410 coincides with the rotation center of the swing groove 200. The push rod 422 can be arranged at the bottom of the swing groove 200 and is arranged along the extending direction of the swing groove 200. A roller is installed at one end of the push rod 422 close to the fixing groove 100. In this embodiment, the roller can be integrally in a cylindrical shape, and the cylindrical surface of the roller is tangent to the arc surface of the arc-shaped structure 411 of the limiting plate 410, enabling the roller to roll on the arc surface while ensuring that the distance between the rotation center of the swing groove 200 and the axis of the roller remains unchanged. Additionally, since the push rod 422 and the arc-shaped plate are in contact through the roller, the friction of the contact surface can be greatly reduced.

[0054] Optionally, the follower tensioning device 400 further includes a first fixing assembly 500 for fixing the roller to one end of the push rod 422 close to the arc-shaped plate. As Figure 7 shown, the first fixing assembly 500 includes: a first pin shaft 510, a first pressing plate 520, and a first bolt 530; the first pin shaft 510 fixes the roller to one end of the push rod 422. The first pressing plate 520 is fixed to one end of the push rod 422 through the first bolt 530 and is arranged between the first pin shaft 510 and the roller, so that the first pin shaft 510 and the push rod 422 are fixedly connected.

[0055] Specifically, the roller has a shaft hole along its axial direction. The first pin shaft 510 can be inserted into the shaft hole of the roller from a plane of the roller. It should be noted that the inner diameter of the shaft hole of the roller needs to be greater than the outer diameter of the first pin shaft 510 to facilitate the free rolling of the roller. When the first pin shaft 510 is inserted into the shaft hole of the roller, the first pressing plate 520 is inserted into the annular groove of the first pin shaft 510, so that while the roller is fixed to the push rod 422, a space for free rolling is ensured.

[0056] Optionally, the first conveyor provided in this embodiment can further include a guide groove 440. The guide groove 440 is fixedly arranged outside the bottom of the swing groove 200 for positioning the push rod 422, and the push rod 422 can slide along the guide groove 440. That is, the guide groove 440 is welded below the swing groove 200, and the push rod 422 can pass through the guide groove 440 and slide back and forth along the extending direction of the guide groove 440. Additionally, it can further include a cover plate 442. The cover plate 442 is connected to the groove wall of the guide groove 440 through bolts and covers the groove opening of the guide groove 440. Further, an oil cup 441 can be arranged on the guide groove 440 for containing lubricating grease; a lubricating groove into which lubricating grease can be injected can be arranged in the guide groove 440, and the oil cup 441 is communicated with the lubricating groove for injecting lubricating grease into the lubricating groove. In practical applications, lubricating grease can be injected into the lubricating groove by injecting lubricating grease through the oil cup 441, facilitating the forward and backward movement of the push rod 422 based on the U-shaped groove.

[0057] Optionally, a first sliding groove 210 is provided on the outer sides of the two side arms of the swinging groove 200. The follower assembly 420 may further include a first sliding plate 211 slidably disposed in the first sliding groove 210. The first sliding plate 211 can slide in the first sliding groove 210 and is used to connect the bracket 220 and the tensioning oil cylinder 430. Optionally, the tensioning oil cylinder 430 and the bracket 220 can be simultaneously fixed to the first sliding plate 211 by bolts. In the first conveyor provided in this embodiment, by forming a unified rigid body with the roller, the push rod 422, the U-shaped frame, the tensioning oil cylinder 430, the first sliding plate 211, the driving device 320, etc., the tightness of the entire driving chain 310 is ensured to be the same during the swinging process of the swinging groove 200, achieving the purpose of follow-up tensioning.

[0058] Continue to refer to Figure 4 It can be seen that a second sliding groove 230 is provided on the outer sides of the two side arms of the swinging groove 200. The follower assembly 420 may further include a second sliding plate 231 disposed in the second sliding groove 230. The second sliding plate 231 can slide in the second sliding groove 230 and is used to connect the tensioning oil cylinder 430 and the driving device 320.

[0059] That is to say, one end of the tensioning oil cylinder 430 can be connected to the bracket 220 on the first sliding plate 211 at the same time, and the other end of the tensioning oil cylinder 430 is connected to the driving device 320 on the second sliding plate 231, so that the bracket 220 and the driving device 320 follow the tensioning oil cylinder 430 to slide, and then the rollers on the push rod 422 roll along the arc surface of the arc-shaped structure 411 of the limiting plate 410.

[0060] Both sides of the top end of the bracket 220 are respectively fixed to the left and right first sliding plates 211 through a third fixing assembly 700, as Figure 6 、 Figure 9 shown. The third fixing assembly 700 includes: a third pin shaft 710 for fixedly connecting the bracket 220 and the first sliding plate 211; a snap ring 720 disposed between the bracket 220 and the first sliding plate 211 for fastening the bracket 220. Optionally, the bracket 220 can be further fastened by a third bolt 730.

[0061] In the first conveyor provided by the embodiment of the present invention, when adjusting the tightness of the chain, first connect the oil inlet of the tensioning oil cylinder 430 to the tensioning joint in the first conveyor through an oil pipe, operate the handle, extend the tensioning oil cylinder 430 with hydraulic oil, the tensioning oil cylinder 430 drives the driving device 320 to move backward, so that the chain starts to be tightened. When the required state is reached, several oil cylinder shims are placed on the oil cylinder rod, and the hydraulic oil is removed to complete the tensioning of the chain.

[0062] According to actual needs, when the swing chute 200 swings either to the left or to the right, due to the action of the drive chain 310, the rollers will tightly roll along the edge of the arc-shaped plate. Since the follower tensioning device 400 from the rollers to the drive device 320 belongs to a rigid connection and the whole can move back and forth in the corresponding chute, when the swing chute 200 of the first conveyor swings left and right, the tension of the drive chain 310 can be adjusted in real time dynamically. In particular, in this embodiment, the arc surface of the limit plate 410 is reasonably designed, which can ensure that the distance between the center of rotation and the axis of the roller remains unchanged. No matter how it swings left and right, the whole follower tensioning device 400 can move back and forth, and the chain can be adjusted in real time dynamically, so as to ensure that the drive chain 310 maintains the same tension at any position. In addition, since the follower tensioning device 400 is arranged on the outside of the first conveyor, it is convenient for later maintenance and repair.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A first transport aircraft, characterized in that: include: Fixed slot (100); A swinging groove (200) rotatably connected to the fixed groove (100); A chain transmission mechanism (300) comprising a driving chain (310) arranged along the extending direction of the fixed groove (100) and the swing groove (200), and a driving device (320) slidably connected to the swing groove (200) and used for driving the driving chain (310) to rotate; A follower tensioning device (400) connected to the driving device (320) and capable of moving following the swing of the swing slot (200) to drive the driving device (320) to dynamically adjust the tightness of the driving chain (310); The follower tensioning device (400) comprises a limit plate (410) arranged on the outside of the bottom of the fixed groove (100); a tensioning cylinder (430) arranged on the outside of both sides of the side wall of the swing groove (200); one end of the tensioning cylinder (430) is connected to the driving device (320) to drive the driving device (320) to move relative to the swing groove (200) along the front-rear direction of the swing groove (200); a follower assembly (420) is arranged on the swing groove (200), and the other end of the tensioning cylinder (430) is connected to the follower assembly (420); The follower assembly (420) comprises a limiting portion (421) abutting against the limiting plate (410), and the limiting portion (421) can follow the swing of the swing groove (200) and slide relative to the limiting plate (410) along the left-right direction of the fixed groove (100); the follower assembly (420) comprises a bracket (220), and the two ends of the bracket (220) are respectively connected to the other end of the tensioning cylinder (430); a push rod (422) is arranged on the outer side of the bottom of the swing groove (200); one end of the push rod (422) is fixedly connected to the bracket (220), and the limiting portion (421) is arranged at one end of the push rod (422) away from the bracket (220); One end of the limiting plate (410) close to the swing groove (200) has an arc-shaped structure (411); the limiting portion (421) further comprises a roller, which is arranged at the other end of the push rod (422), and the surface of the roller is tangent to the arc surface of the arc-shaped structure (411); The outer sides of the two side arms of the swing groove (200) are provided with a first sliding groove (210) and a second sliding groove (230); the follower assembly (420) further comprises a first sliding plate (211) arranged in the first sliding groove (210) and a second sliding plate (231) arranged in the second sliding groove (230); the first sliding plate (211) is capable of sliding in the first sliding groove (210) and is used to connect the bracket (220) and the tensioning cylinder (430); the second sliding plate (231) is capable of sliding in the second sliding groove (230) and is used to connect the tensioning cylinder (430) and the driving device (320).

2. The first transport aircraft according to claim 1, characterized in that: The center of the arc surface of the arc-shaped structure (411) coincides with the rotation center of the swing groove (200).

3. The first transport aircraft according to claim 1, characterized in that: Also includes: A guide groove (440) is fixedly arranged on the outside of the bottom of the swing groove (200) and is used to position the push rod (422), and the push rod (422) can slide along the guide groove (440).

4. The first transport aircraft according to claim 3, characterized in that: Also includes: A cover plate (442), the cover plate (442) being connected to a groove wall of the guide groove (440) and covering a groove opening of the guide groove (440).

5. A tunnel boring machine, characterized in that: include: An equipment main body, and a first conveyor according to any one of claims 1 to 4, wherein the first conveyor is connected to the equipment main body.

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