A toothed elastic transmission device for a tunnel cantilever boring machine

Abstract

The present invention discloses a toothed elastic transmission device for a tunnel boom boring machine, comprising two elastic opening and closing rotary digging wheels symmetrically installed in a shovel bucket, and the two elastic opening and closing rotary digging wheels are arranged along the lateral direction of the shovel bucket, and a chain plate type conveying unit is arranged at the discharge end of the shovel bucket, and the chain plate type conveying unit is respectively connected to the two elastic opening and closing rotary digging wheels through two wheel transmission units, and lateral guide units are respectively arranged on both sides of the chain plate type conveying unit, and the two lateral guide units are both connected to the chain plate type conveying unit, and the guide units on both sides are connected to the body of the boom boring machine. The present invention can efficiently remove waste rocks, debris, etc. of different volumes generated by excavation, does not affect the efficiency of the excavation operation, and improves the safety of the removal operation and the excavation operation. The present invention is applicable to the technical field of removing waste rocks, debris, etc. in tunnel excavation construction.

Description

Technical Field

[0001] The invention belongs to the technical field of waste rock removal in tunnel excavation construction, and in particular relates to a toothed elastic transmission device of a tunnel cantilever boring machine. Background Art

[0002] At present, in the process of the cantilever tunnel boring machine excavating the mountain, the cutting mechanism performs rotary cutting on the mountain and generates a large amount of waste stone, debris, etc. If these waste stone, debris, etc. are not removed in time, it is very easy to accumulate, affecting the movement of the cantilever tunnel boring machine and hindering the progress of the excavation operation. In serious cases, it will cause safety accidents. Therefore, it is necessary to remove the waste stone, debris, etc. in time. However, the existing means cannot meet the simultaneous removal of large and small waste stone, debris, etc., that is, when encountering large waste stone, it cannot be smoothly transferred to the conveyor belt, and then a forklift is needed to realize the transfer of large waste stone. However, the cantilever tunnel boring machine and the forklift are working in the tunnel at the same time, which further limits the working space, and the efficiency and safety of the operation cannot be guaranteed. Summary of the invention

[0003] The present invention provides a tunnel cantilever tunnel boring machine toothed elastic transmission device for efficiently removing waste rocks, debris and the like of different volumes generated by tunneling without affecting the efficiency of tunneling operations and improving the safety of the removal operations and tunneling operations.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A toothed elastic transmission device for a tunnel boom tunnel boring machine comprises two elastic opening and closing rotary digging wheels symmetrically installed in a shovel bucket, and the two elastic opening and closing rotary digging wheels are arranged along the transverse direction of the shovel bucket, a chain plate type conveying unit is arranged at the discharge end of the shovel bucket, the chain plate type conveying unit is respectively connected to the two elastic opening and closing rotary digging wheels through two wheel transmission units, and lateral material guide units are respectively arranged on both sides of the chain plate conveying unit, the two lateral material guide units are both connected to the chain plate conveying unit, and the two side material guide units are connected to the body of the boom tunnel boring machine.

[0006] Furthermore, the shovel bucket includes a bucket body, a discharge portion is formed at one end of the bucket body close to the chain plate conveying unit, the discharge end is formed at the discharge portion, and hinge shafts are respectively constructed on both sides of the bucket body, and two inclined rods are symmetrically arranged on both sides of the bucket body, one end of each of the inclined rods is rotatably connected to the corresponding hinge shaft, and the other end of the inclined rod is fixedly connected to the machine body.

[0007] Furthermore, the elastic opening and closing rotary digging wheel includes a plurality of intermediate rotary digging wheels arranged between a bottom rotary digging wheel and a top rotary digging wheel. Two adjacent intermediate rotary digging wheels, a bottom rotary digging wheel and an adjacent intermediate rotary digging wheel, and a top rotary digging wheel and an adjacent intermediate rotary digging wheel are all connected in a joint manner. The elastic connecting member passes through the bottom rotary digging wheel, each intermediate rotary digging wheel and the top rotary digging wheel in sequence from bottom to top, and the two ends of the elastic connecting member are respectively connected and fixed to the bottom rotary digging wheel and the top rotary digging wheel. The radial length of the bottom rotary digging wheel is greater than the radial length of the top rotary digging wheel, the radial length of the intermediate rotary digging wheel is between the bottom rotary digging wheel and the top rotary digging wheel, and the radial lengths of the plurality of intermediate rotary digging wheels decrease upward in the vertical direction.

[0008] Furthermore, the bottom rotary digging wheel includes a first wheel body with a connecting tube at the lower end, a plurality of first digging teeth are evenly configured in the circumference of the first wheel body, a first joint groove is opened at the upper end of the first wheel body, the lower end of the middle rotary digging wheel close to the first wheel body is movably assembled in the first joint groove, a lower end cover is detachably connected to the lower end of the connecting tube, and the lower end of the elastic connecting piece is detachably connected to the lower end cover.

[0009] Furthermore, the intermediate rotary digging wheel includes a second wheel body having a first movable joint constructed at the lower end, a plurality of second digging teeth are evenly constructed in the circumference of the second wheel body, and a second joint groove is opened at the upper end of the second wheel body, the second joint groove is movably connected to the corresponding first movable joint, or the lower end of the top rotary digging wheel is movably assembled in the corresponding second joint groove.

[0010] Furthermore, the top rotary digging wheel includes a third wheel body with a second movable joint at the lower end, a plurality of third digging teeth are evenly configured in the circumference of the third wheel body, and a connecting edge extending radially inward is configured at the upper end of the third wheel body, and the upper end of the elastic connecting piece is detachably connected to the connecting edge.

[0011] Furthermore, the elastic connecting member includes a lower connecting rod and an upper connecting rod which are detachably connected to the bottom rotary digging wheel and the top rotary digging wheel respectively, and a plurality of connecting blocks are arranged between the lower connecting rod and the upper connecting rod, each of the connecting blocks is slidably assembled in the corresponding intermediate rotary digging wheel, and a sliding block is constructed at the lower end of the upper connecting rod, and the sliding block is slidably assembled in the top rotary digging wheel, and connecting springs are respectively fixed between the lower connecting rod and the corresponding connecting block, between two adjacent connecting blocks, and between the sliding block and the corresponding connecting block.

[0012] Furthermore, the chain-type conveying unit includes a main feed chain plate drivingly connected to two transmission rollers, each of the transmission rollers is rotatably connected to two baffles via an axle rod coinciding with its axis, and the two baffles are arranged on both sides of the main feed chain plate and connected to the machine body.

[0013] Furthermore, the wheel transmission unit includes a first bevel gear coaxially assembled on the lower part of the elastic opening and closing rotary excavation wheel, a second bevel gear meshing with the first bevel gear is installed on the shaft rod close to the first bevel gear, and an adapter shaft is coaxially fixedly assembled on both ends of the shaft rod, each of the adapter shafts is rotatably connected to an adapter seat, each of the adapter seats is connected to the machine body, and one of the adapter shafts is coaxially connected to the output shaft of the hydraulic motor.

[0014] Furthermore, the lateral material guide unit includes two vertical rollers arranged at intervals along the conveying direction of the chain-plate conveying unit, each of the vertical rollers is coaxially connected with a vertical shaft, the lower end of the vertical shaft away from the shovel bucket is connected to the corresponding shaft rod through a universal coupling, and the other three ends of the two vertical shafts except the end connected to the universal coupling are rotatably connected to the baffle through a transmission seat, the auxiliary material conveying chain plate is transmission-connected between the two vertical rollers, an assembly opening extending along the material conveying direction is opened on the baffle, and one side of the auxiliary material conveying chain plate passes through the baffle through the assembly opening; a protective shell is installed outside the baffle, the auxiliary material conveying chain plate and the two vertical rollers are all located in the protective shell, and a fixed seat is constructed at the upper end of the protective shell, and the fixed seat is connected and fixed to the machine body.

[0015] Due to the adoption of the above structure, the technical progress achieved by the present invention compared with the prior art is as follows: the present invention is installed on the body of the boom tunneling machine and is located below the cutting mechanism (cutting drill bit) of the boom tunneling machine. When the cutting mechanism cuts off the mountain, the crushed stone falls off the mountain. As the boom tunneling machine gradually moves forward, the shovel bucket scoops up the waste stone and slag and supplies them to the two elastic opening and closing rotary digging wheels. The two elastic opening and closing rotary digging wheels are driven to rotate relative to each other, so that the waste stone and slag are transported to the chain plate conveying unit by the two. In this process In the process, due to the different volumes of waste rocks, slag, etc., that is, small-volume waste rocks, slag, etc. are accumulated in the lower position of the two elastic opening and closing rotary digging wheels, so that they can be transported stably. When large-volume waste rocks pass between the two elastic opening and closing rotary digging wheels, the two elastic opening and closing rotary digging wheels will undergo a certain elastic deformation, thereby ensuring that the two elastic opening and closing rotary digging wheels can firmly bite on the outer surface of the waste rocks, thereby allowing the waste rocks to be transported to the chain plate conveying unit, avoiding the waste rocks from being offset and unable to be smoothly supplied to the chain plate conveying unit. When waste rock is supplied to the chain plate conveying unit, in order to prevent the waste rock from deflecting, rolling, etc. on the chain plate conveying unit, which causes poor conveying, the method adopted is to respectively set lateral guide units on both sides of the chain plate conveying unit. The two lateral guide units move with the movement of the chain plate conveying unit, and then contact the side of the large-volume and heavy-weight waste rock, and cooperate with the chain plate conveying unit to guide the waste rock out of the cut-off area of ​​the cutting mechanism. In summary, the present invention can efficiently remove waste rock, debris, etc. of different volumes generated by excavation, without affecting the efficiency of excavation operations, and at the same time improve the safety of removal operations and excavation operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] In the attached picture:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of another angle of an embodiment of the present invention;

[0020] Figure 3 It is a schematic structural diagram of a shovel bucket, two elastic opening and closing rotary excavation wheels, two wheel transmission units and two inclined tie rods according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of another angle of the structure shown;

[0022] Figure 5 This is a schematic diagram of the structure of an elastic opening and closing rotary excavation wheel according to an embodiment of the present invention;

[0023] Figure 6 It is a cross-sectional view of the axial structure of the elastic opening and closing rotary excavation wheel according to an embodiment of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the bottom rotary digging wheel in the elastic opening and closing rotary digging wheel according to an embodiment of the present invention;

[0025] Figure 8 for Figure 7 A schematic diagram of another angle of the structure shown;

[0026] Fig. 9 It is a schematic structural diagram of the middle rotary digging wheel in the elastic opening and closing rotary digging wheel according to an embodiment of the present invention;

[0027] Fig.10 for Fig. 9 A schematic diagram of the structure from another angle of the structure shown;

[0028] Fig.11 It is a schematic structural diagram of the top rotary digging wheel in the elastic opening and closing rotary digging wheel according to an embodiment of the present invention;

[0029] Fig.12 It is a schematic structural diagram of the connection between the elastic connector and the lower end cover in the elastic opening and closing rotary excavation material wheel according to an embodiment of the present invention;

[0030] Fig.13 It is a schematic structural diagram of a chain-type conveying unit and two lateral material guide units in driving connection with each other according to an embodiment of the present invention;

[0031] Fig.14 It is a schematic diagram of the partial structure of the transmission connection between the chain plate conveying unit and the single lateral material guiding unit in an embodiment of the present invention.

[0032] Labeled parts: 100-shovel bucket, 101-bucket body, 102-discharging part, 103-discharging end, 104-hinge shaft, 200-elastic opening and closing rotary digging wheel, 201-bottom rotary digging wheel, 2011-first wheel body, 2012-first scraping tooth, 2013-connecting pipe, 2014-first joint groove, 2015-first connecting hole, 202-middle rotary digging wheel, 2021-second wheel body, 2022-second scraping tooth, 2023-first movable joint, 2024-vertical guide groove, 2025-second joint groove, 203-top rotary digging wheel, 2031-third wheel body, 2032-third scraping tooth, 2033-second movable joint, 2034-connecting edge, 204-elastic connector, 2041 -lower connecting rod, 2042-connecting block, 2043-connecting spring, 2044-upper connecting rod, 2045-vertical guide bar, 205-lower end cover, 206-first adjusting nut, 207-second adjusting nut, 208-second connecting hole, 300-wheel transmission unit, 301-first bevel gear, 302-second bevel gear, 303-adapter shaft, 400-oblique pull rod, 500-chain plate conveying unit, 501-transmission roller, 502-shaft rod, 503-main feed chain plate, 600-lateral feed guide unit, 601-protective shell, 602-fixed seat, 603-vertical roller, 604-vertical shaft, 605-transmission seat, 606-universal coupling, 607-auxiliary feed chain plate, 700-adapter seat. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] The present invention discloses a toothed elastic transmission device for a tunnel cantilever boring machine, such as Figure 1-14As shown, it includes a shovel bucket 100, a chain plate type conveying unit 500, two elastic opening and closing rotary digging wheels 200, two wheel type transmission units 300 and two lateral material guide units 600. Among them, the two elastic opening and closing rotary digging wheels 200 are symmetrically installed in the shovel bucket 100, and the two elastic opening and closing rotary digging wheels 200 are arranged along the lateral direction of the shovel bucket 100. The chain plate type conveying unit 500 is arranged at the discharge end 103 of the shovel bucket 100, and the chain plate type conveying unit 500 is respectively connected to the two elastic opening and closing rotary digging wheels 200 through two wheel type transmission units 300. The two lateral material guide units 600 of the present invention are symmetrically arranged on both sides of the chain plate type conveying unit 500, and the two lateral material guide units 600 are both connected to the chain plate type conveying unit 500, and the two lateral material guide units 600 are connected to the body of the cantilever tunneling machine. The working principle and advantages of the present invention are as follows: the present invention is installed on the body of the boom tunneling machine and is located below the cutting mechanism (cutting drill bit) of the boom tunneling machine. When the cutting mechanism cuts off the mountain, the crushed stone falls off the mountain. As the boom tunneling machine gradually moves forward, the shovel bucket 100 scoops up the waste stone, slag, etc. and supplies them to the two elastic opening and closing rotary digging wheels 200. The two elastic opening and closing rotary digging wheels 200 are driven to rotate relative to each other, so that the waste stone and slag are transported to the chain plate conveying unit 500 by the two. In this process, due to the movement of the waste stone, slag, etc. The volumes are different, that is, small-volume waste rocks, debris, etc. are accumulated in the lower position of the two elastic opening and closing rotary digging wheels 200, so that they can be transported stably. When large-volume waste rocks pass between the two elastic opening and closing rotary digging wheels 200, the two elastic opening and closing rotary digging wheels 200 will undergo a certain elastic deformation, thereby ensuring that the two elastic opening and closing rotary digging wheels 200 can be firmly engaged on the outer surface of the waste rocks, thereby allowing the waste rocks to be transported to the chain plate conveying unit 500, avoiding the waste rocks from being offset and unable to be smoothly supplied to the chain plate conveying unit 500. When waste rock is supplied to the chain plate conveying unit 500, in order to prevent the waste rock from deflecting, rolling, etc. on the chain plate conveying unit 500, resulting in poor conveying, the method adopted is to respectively set lateral guide units 600 on both sides of the chain plate conveying unit 500. The two lateral guide units 600 move with the movement of the chain plate conveying unit 500, and then contact the side of the large-volume and heavy-weight waste rock, and cooperate with the chain plate conveying unit 500 to guide the waste rock out of the cut-off area of ​​the cutting mechanism. In summary, the present invention can efficiently remove waste rock, slag, etc. of different volumes generated by excavation, without affecting the efficiency of excavation operations, and at the same time improve the safety of removal operations and excavation operations.

[0035] As a preferred embodiment of the present invention, Figure 3As shown, the shovel bucket 100 includes a bucket body 101, and a discharge portion 102 is formed at one end of the bucket body 101 close to the chain plate conveying unit 500, and the above-mentioned discharge end 103 is formed at the discharge portion 102. In this embodiment, hinge shafts 104 are respectively constructed on both sides of the bucket body 101, and two inclined tie rods 400 are symmetrically arranged on both sides of the bucket body 101. One end of each inclined tie rod 400 is rotatably connected to the corresponding hinge shaft 104, and the other end of the inclined tie rod 400 is fixedly connected to the machine body. The working principle and advantage of this embodiment are: the bucket body 101 of this embodiment can not only shovel waste stone, slag, etc., but also provide an installation area for two elastic opening and closing rotary digging wheels 200, so that the excavated waste stone, slag, etc. can be smoothly transported by the two elastic opening and closing rotary digging wheels 200.

[0036] As a preferred embodiment of the present invention, Figure 5-12As shown, the elastic opening and closing rotary excavation wheel 200 includes a bottom rotary excavation wheel 201, a top rotary excavation wheel 203, an elastic connecting member 204 and a plurality of intermediate rotary excavation wheels 202. The plurality of intermediate rotary excavation wheels 202 are arranged between the bottom rotary excavation wheel 201 and the top rotary excavation wheel 203, and the two adjacent intermediate rotary excavation wheels 202, the bottom rotary excavation wheel 201 and the adjacent intermediate rotary excavation wheel 202, and the top rotary excavation wheel 203 and the adjacent intermediate rotary excavation wheel 202 are all connected by joints. The elastic connecting member 204 of this embodiment passes through the bottom rotary excavation wheel 201, each intermediate rotary excavation wheel 202 and the top rotary excavation wheel 203 from bottom to top, and the two ends of the elastic connecting member 204 are respectively connected and fixed to the bottom rotary excavation wheel 201 and the top rotary excavation wheel 203. In this embodiment, the radial length of the bottom rotary digging wheel 201 is greater than the radial length of the top rotary digging wheel 203, the radial length of the intermediate rotary digging wheel 202 is between the bottom rotary digging wheel 201 and the top rotary digging wheel 203, and the radial lengths of these intermediate rotary digging wheels 202 decrease upward in the vertical direction. The working principle and advantages of this embodiment are as follows: the two elastic opening and closing rotary digging wheels 200 of this embodiment continuously transport waste rocks, slag, etc. during the process of being driven and rotating relative to each other; when encountering larger waste rocks, the two elastic opening and closing rotary digging wheels 200 gradually bite on the outer surface of the waste rocks, and the elastic opening and closing rotary digging wheels 200 undergo elastic deformation. Specifically, the middle rotary digging wheel 202 and / or the top rotary digging wheel 203 deflect at a certain angle along their joints, so that the middle rotary digging wheel 202 and / or the top rotary digging wheel 203 can bite on the outer surface of the irregularly shaped waste rocks. At the same time, the elastic connecting member 204 undergoes elastic deformation. While ensuring the synchronous rotation of the bottom rotary digging wheel 201, the top rotary digging wheel 203 and the plurality of middle rotary digging wheels 202, the elastic connecting member 204 can drive the middle rotary digging wheel 202 and / or the top rotary digging wheel 203 to return to their positions after transporting the waste rocks, so as to facilitate the next bite and transportation of large-volume waste rocks. In this embodiment, the distance between the two elastic opening and closing rotary digging wheels 200 increases from bottom to top, thereby ensuring that waste rocks, slag, etc. of different volumes are transported in layers, that is, small-volume waste rocks, slag, etc. are transported by the lower part of the two elastic opening and closing rotary digging wheels 200, and large-volume waste rocks, slag, etc. are transported by the middle and upper parts of the two elastic opening and closing rotary digging wheels 200, thereby avoiding incomplete or insufficient transportation of waste rocks, slag, etc.

[0037] As a preferred embodiment of the present invention, Figure 7 , 8As shown, the bottom rotary digging wheel 201 includes a first wheel body 2011, a connecting pipe 2013 is constructed at the lower end of the first wheel body 2011, and a plurality of first connecting holes 2015 are spaced apart along the circumference of the lower end surface of the connecting pipe 2013. A plurality of first digging teeth 2012 are evenly constructed around the circumference of the first wheel body 2011, a first joint groove 2014 is provided at the upper end of the first wheel body 2011, the lower end of the intermediate rotary digging wheel 202 close to the first wheel body 2011 is movably assembled in the first joint groove 2014, a lower end cover 205 is provided at the lower end of the connecting tube 2013, a plurality of second connecting holes 208 are provided on the lower end cover 205, the second connecting holes 208 are arranged one-to-one with the first connecting holes 2015, and the lower end cover 205 is fixedly connected to the lower end of the connecting tube 2013 by a plurality of connecting bolts, each connecting bolt passes through the aligned second connecting hole 208 and the first connecting hole 2015 in sequence, and the connecting bolt is threadedly connected to the connecting tube 2013, and the lower end of the elastic connecting member 204 is detachably connected to the lower end cover 205. Fig. 9 , 10 As shown, the intermediate rotary digging wheel 202 of this embodiment includes a second wheel body 2021, a first movable joint 2023 is constructed at the lower end of the second wheel body 2021, a plurality of second material removal teeth 2022 are uniformly constructed around the circumference of the second wheel body 2021, a second joint groove 2025 is opened at the upper end of the second wheel body 2021, and the second joint groove 2025 is movably connected with the corresponding first movable joint 2023, the first movable joint 2023 on the intermediate rotary digging wheel 202 close to the bottom rotary digging wheel 201 is movably assembled in the first joint groove 2014, or the lower end of the top rotary digging wheel 203 is movably assembled in the corresponding second joint groove 2025. Fig.11 As shown, the top rotary digging wheel 203 of this embodiment includes a third wheel body 2031, and a second movable joint 2033 is configured at the lower end of the third wheel body 2031. The second movable joint 2033 is movably assembled in the corresponding second joint groove 2025. In this embodiment, a plurality of third digging teeth 2032 are uniformly configured around the circumference of the third wheel body 2031, and a connecting edge 2034 extending radially inward is configured at the upper end of the third wheel body 2031. The upper end of the elastic connecting member 204 is detachably connected to the connecting edge 2034. Fig.12As shown, the elastic connecting member 204 of this embodiment includes a lower connecting rod 2041, an upper connecting rod 2044 and a plurality of connecting blocks 2042. The lower connecting rod 2041 and the upper connecting rod 2044 are detachably connected to the bottom rotary digging wheel 201 and the top rotary digging wheel 203, respectively. The first adjusting nut 206 and the second adjusting nut 207 are respectively threadedly connected to the lower connecting rod 2041 and the upper connecting rod 2044. The plurality of connecting blocks 2042 are arranged between the lower connecting rod 2041 and the upper connecting rod 2044 at intervals in the vertical direction. A plurality of vertical guide grooves 2024 are respectively provided on the inner wall of each second wheel body 2021 and the third wheel body 2031. The vertical guide grooves 2024 are uniformly arranged along the circumference of the second wheel body 2021 or the third wheel body 2031. A plurality of vertical guide bars 2045 are constructed on the peripheral wall of each connecting block 2042. Each vertical guide bar 2045 is movably assembled in the corresponding vertical guide groove 2024. A sliding block is constructed at the lower end of the upper connecting rod 2044, and a plurality of vertical guide bars 2045 are also constructed on the outer peripheral wall of the sliding block. Each vertical guide bar 2045 is slidably assembled in a corresponding vertical guide groove 2024 of the third wheel body 2031, thereby achieving the purpose of sliding connection between the sliding block and the top rotary digging wheel 203. In this embodiment, connecting springs 2043 are respectively fixed between the lower connecting rod 2041 and the corresponding connecting block 2042, between two adjacent connecting blocks 2042, and between the sliding block and the corresponding connecting block 2042. The connecting spring 2043 is generally a corrugated spring, mainly because the corrugated spring has good torsion resistance and can be elastically bent in any direction, so that when the middle rotary digging wheel 202 and / or the top rotary digging wheel 203 are skewed, the corrugated spring makes a corresponding elastic skew action, and ensures that when the elastic opening and closing rotary digging wheel 200 is driven and transmitted, the elastic connecting member 204 drives the bottom rotary digging wheel 201, the top rotary digging wheel 203 and the middle rotary digging wheel 202 to rotate synchronously. In this embodiment, by rotating the first adjusting nut 206 and / or the second adjusting nut 207, the lower connecting rod 2041 and the upper connecting rod 2044 are moved closer to or away from each other, so that the elastic preload force of the corrugated spring is adjusted, and the elastic bite ability of the elastic opening and closing rotary digging wheel 200 is adjusted. In this embodiment, flanges (not shown in the figure) are respectively constructed at the upper and lower ends of 2023, and each flange extends radially inward along the elastic connecting member 204. These two flanges restrict the connecting block 2042 within the corresponding first movable joint 2023 or the second movable joint 2033, thereby preventing the connecting spring 2043 from undergoing elastic deformation and causing the connecting block 2042 to detach from the corresponding first movable joint 2023 or the second movable joint 2033.

[0038] As a preferred embodiment of the present invention, Figure 4 , 13As shown in , 14, the chain plate conveying unit 500 includes a main material conveying chain plate 503 and two transmission rollers 501, the two transmission rollers 501 are connected to the main material conveying chain plate 503, each transmission roller 501 is coaxially connected to a shaft 502, and the two ends of the shaft 502 are respectively connected to two baffles for rotation, the two baffles are respectively arranged on both sides of the main material conveying chain plate 503, and each baffle is connected to the machine body. The wheel transmission unit 300 of this embodiment includes a first bevel gear 301 and a second bevel gear 302, wherein the first bevel gear 301 is coaxially assembled outside the connecting pipe 2013 at the lower part of the elastic opening and closing rotary excavation wheel 200, and the second bevel gear 302 is installed on the shaft 502 close to the first bevel gear 301, and the first bevel gear 301 and the second bevel gear 302 are meshed with each other. The two ends of the shaft 502 are coaxially fixed with adapter shafts 303, each adapter shaft 303 is rotatably connected to an adapter seat 700, each adapter seat 700 is connected to the machine body, and one of the adapter shafts 303 is coaxially connected to the output shaft of the hydraulic motor. This embodiment achieves the purpose of driving the chain plate conveying unit 500 and the two elastic opening and closing rotary digging material wheels 200 to move synchronously by controlling the action of the hydraulic motor and the transmission of the first bevel gear 301 and the second bevel gear 302. The lateral guide unit 600 of this embodiment includes an auxiliary material feeding chain plate 607 and two vertical rollers 603, wherein the two vertical rollers 603 are arranged at intervals along the conveying direction of the chain plate conveying unit 500, each vertical roller 603 is coaxially connected with a vertical shaft 604, the lower end of the vertical shaft 604 away from the shovel bucket 100 is connected to the corresponding shaft rod 502 through a universal coupling 606, and the other three ends of the two vertical shafts 604 except the end connected to the universal coupling 606 are respectively rotatably connected to the baffle through a transmission seat 605, and the auxiliary material feeding chain plate 607 is transmission-connected to the two vertical rollers 603. Driven by the hydraulic motor, the chain plate conveying unit 500 performs a conveying operation, thereby rotating the shaft rod 502, and during the rotation of the shaft rod 502, the vertical shaft 604 is driven to rotate through the universal coupling 606, thereby operating the lateral guide unit 600. In this embodiment, an assembly port extending along the feeding direction is provided on the baffle, and one side of the auxiliary feeding chain plate 607 passes through the baffle through the assembly port, so that the auxiliary feeding chain plate 607 can contact or press against the outer surface of the large volume of waste rock. In this embodiment, a protective shell 601 is installed outside the baffle, and the auxiliary feeding chain plate 607 and two vertical rollers 603 are both located in the protective shell 601. A fixed seat 602 is constructed at the upper end of the protective shell 601, and the fixed seat 602 is connected and fixed to the machine body, thereby achieving the purpose of connecting the lateral material guide unit 600 and the chain plate conveying unit 500 to the machine body.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A toothed elastic transmission device for a tunnel boom boring machine, characterized in that: The cam is connected to the conveyor belt by a chain-type conveying unit, and the two cam-type conveying units are connected to the conveyor belt by a chain-type conveying unit, and the two cam-type conveying units are connected to the conveyor belt by a chain-type conveying unit. The cam is an angularly-spaced structure formed on a pair of camshafts, each of which is adapted to move along a camshaft axis along the camshaft side and the camshaft axis respectively. The camshafts are arranged on the upper and lower ends of the camshafts, and the camshafts are connected to the upper and lower ends of the camshafts.

2. A tunnel boom boring machine toothed elastic transmission device according to claim 1, characterized in that: The shovel bucket includes a bucket body, a discharge portion is formed at one end of the bucket body close to the chain plate conveying unit, the discharge end is formed at the discharge portion, hinge shafts are respectively constructed on both sides of the bucket body, two inclined rods are symmetrically arranged on both sides of the bucket body, one end of each of the inclined rods is rotatably connected to the corresponding hinge shaft, and the other end of the inclined rod is fixed to the machine body.

3. The toothed elastic transmission device of a tunnel boom boring machine according to claim 1, characterized in that: The bottom rotary digging wheel includes a first wheel body with a connecting tube at the lower end, a plurality of first digging teeth are evenly configured in the circumference of the first wheel body, a first joint groove is opened at the upper end of the first wheel body, the lower end of the middle rotary digging wheel close to the first wheel body is movably assembled in the first joint groove, a lower end cover is detachably connected to the lower end of the connecting tube, and the lower end of the elastic connecting piece is detachably connected to the lower end cover.

4. The toothed elastic transmission device of a tunnel boom boring machine according to claim 1, characterized in that: The intermediate rotary digging wheel includes a second wheel body with a first movable joint constructed at the lower end, a plurality of second digging teeth are evenly constructed in the circumference of the second wheel body, and a second joint groove is opened at the upper end of the second wheel body. The second joint groove is movably connected to the corresponding first movable joint, or the lower end of the top rotary digging wheel is movably assembled in the corresponding second joint groove.

5. The toothed elastic transmission device of a tunnel boom boring machine according to claim 1, characterized in that: The top rotary digging wheel includes a third wheel body with a second movable joint at the lower end, a plurality of third digging teeth are evenly configured around the circumference of the third wheel body, a connecting edge extending radially inward is configured at the upper end of the third wheel body, and the upper end of the elastic connecting piece is detachably connected to the connecting edge.

6. The toothed elastic transmission device of a tunnel boom boring machine according to claim 1, characterized in that: The chain-plate conveying unit comprises a main material conveying chain plate drivingly connected to two driving rollers, each of the driving rollers is rotatably connected to two baffles via an axle rod coinciding with its axis, and the two baffles are arranged on both sides of the main material conveying chain plate and connected to the machine body.

7. The toothed elastic transmission device of a tunnel boom boring machine according to claim 6, characterized in that: The wheel transmission unit includes a first bevel gear coaxially assembled on the lower part of the elastic opening and closing rotary excavation wheel, a second bevel gear meshing with the first bevel gear is installed on the shaft rod close to the first bevel gear, and an adapter shaft is coaxially fixedly assembled on both ends of the shaft rod, each of the adapter shafts is rotatably connected to an adapter seat, each of the adapter seats is connected to the machine body, and one of the adapter shafts is coaxially connected to the output shaft of the hydraulic motor.

8. The toothed elastic transmission device of a tunnel boom boring machine according to claim 6, characterized in that: The lateral material guide unit includes two vertical rollers arranged at intervals along the conveying direction of the chain-plate conveying unit, each of the vertical rollers is coaxially connected with a vertical shaft, the lower end of the vertical shaft away from the shovel bucket is connected to the corresponding shaft rod through a universal coupling, and the other three ends of the two vertical shafts except the end connected to the universal coupling are rotatably connected to the baffle through a transmission seat, the auxiliary material conveying chain plate is transmission-connected between the two vertical rollers, an assembly opening extending along the material conveying direction is opened on the baffle, and one side of the auxiliary material conveying chain plate passes through the baffle through the assembly opening; a protective shell is installed outside the baffle, the auxiliary material conveying chain plate and the two vertical rollers are all located in the protective shell, a fixed seat is constructed at the upper end of the protective shell, and the fixed seat is connected and fixed to the machine body.

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