Self-moving steel structure bridge for open-pit mine

Abstract

A kind of self-moving steel structure bridge for open-pit mine, including trestle, transport platform, rotating mechanism and walking mechanism, rotating mechanism includes mutually meshing support bearing inner ring, support bearing outer ring, walking mechanism includes outer telescopic platform and inner telescopic platform, the top surface of transport platform is respectively hinged with the inner end of one trestle, the outer end of trestle is overlapped with the top of soil heap, the four corners of transport platform are each provided with a group of gear box, gear column, the bottom of transport platform is connected with support bearing outer ring, support bearing inner ring is connected with the top of outer telescopic platform, the two sides of outer telescopic platform are in turn engaged with the output end of outer extension beam, outer rack and gear machine, the rear end of gear machine is connected with the bottom of inner telescopic platform, the bottom of inner telescopic platform is connected with support foot through multiple support oil cylinders.The design not only can move with open-pit mine boundary, and can avoid dump truck, coal truck route intersection, and can be reused, strong adaptability, reduce use cost.

Description

A self-moving steel structure bridge for open-pit mines Technical Field

[0001] This invention relates to a mining bridge, belonging to the field of mining machinery, and particularly to a self-moving steel structure bridge for open-pit mines. Background Technology

[0002] Currently, in many open-pit coal mines, when stripper trucks transport loess and rocks above the coal seam to the spoil heap, if they travel along the south bank, they will intersect with the routes of coal trucks, posing a significant safety hazard. In this case, if the stripper trucks are arranged to detour via the north bank to avoid the intersection, it results in longer transport distances, higher fuel consumption, and higher costs.

[0003] To address these issues, existing open-pit mines construct concrete bridges on the south side of the mine. These bridges allow vehicles to travel both on and under the mine, resolving the problem of overlapping routes for dump trucks and coal trucks. However, these concrete bridges are immovable. Once the open-pit mine boundary moves to a greater distance, the original concrete bridges become unusable, necessitating the reconstruction of new ones, which incurs high costs due to repeated construction.

[0004] The information disclosed in this background section is intended only to enhance understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings and problems of existing technologies that cannot provide a self-moving steel structure bridge for open-pit mines that can move with the boundary of the open-pit mine, avoid the intersection of the routes of dump trucks and coal trucks, and have high costs. The invention provides a self-moving steel structure bridge for open-pit mines that can move with the boundary of the open-pit mine, avoid the intersection of the routes of dump trucks and coal trucks, and has lower costs.

[0006] To achieve the above objectives, the technical solution of the present invention is: a self-moving steel structure bridge for open-pit mines, wherein the self-moving steel structure bridge for open-pit mines includes a trestle bridge, a transport platform, a slewing mechanism and a traveling mechanism;

[0007] The top two ends of the transport platform are hinged to the inner ends of a trestle, and the outer ends of the trestle overlap with the top of the soil mound. A gearbox is set at each of the four corners of the transport platform. A gear column that slides up and down with the gearbox passes through the inside of the gearbox. The top of the gear column is set higher than the transport platform, and the bottom of the gear column is in contact with the bottom surface of the soil mound.

[0008] The slewing mechanism includes an inner ring of a support bearing and an outer ring of a support bearing sleeved on its outside. The top surface of the outer ring of the support bearing is connected to the bottom surface of the transport platform, the inner side of the outer ring of the support bearing meshes with the outer side of the inner ring of the support bearing, and the bottom surface of the inner ring of the support bearing is connected to the top of the outer telescopic platform.

[0009] The traveling mechanism includes an outer telescopic platform and an inner telescopic platform. The bottom of the outer telescopic platform and the top of the inner telescopic platform are slidably engaged. The two ends of the bottom of the outer telescopic platform are respectively connected to the top of an outer extension beam. The bottom of the outer extension beam is connected to the top of an outer rack. The bottom of the outer rack meshes with the output end of a gear mechanism. The rear end of the gear mechanism is connected to the bottom of the inner telescopic platform. The bottom of the inner telescopic platform is connected to the top of multiple support cylinders. The bottom of the support cylinders is connected to support feet.

[0010] The trestle is a T-shaped structure, including a wide outer bridge and a narrow inner bridge. The width of the wide outer bridge is greater than the width of the narrow inner bridge. The outer end of the wide outer bridge overlaps with the top of the mound. The inner end of the wide outer bridge is connected to the outer end of the narrow inner bridge. The inner end of the narrow inner bridge is hinged to the transport platform via a bridge hinge shaft.

[0011] A pulley block is connected to each of the front and rear ends of the wide outer bridge. A lifting winch corresponding to the pulley block is installed on the transport platform near its front and rear sides. The lifting winch is connected to the corresponding pulley block via a lifting pulley, and the lifting pulley is located above the transport platform.

[0012] The bottom of the narrow inner bridge is connected to the top surface of the pressure plate via a hydraulic device, and the bottom surface of the pressure plate is pressed tightly against the slope of the soil pile.

[0013] The hydraulic device includes at least two hydraulic units arranged sequentially along the pressure plate. Each hydraulic unit includes an upper adjusting cylinder, a clamping connecting rod, and a lower adjusting cylinder. The top end of the clamping connecting rod is hinged to the bottom of the narrow inner bridge, and the bottom end of the clamping connecting rod is hinged to the outer side of the pressure plate. The inner side of the pressure plate is simultaneously hinged to the bottom ends of the lower adjusting cylinder and the lower locking device. The top ends of the lower adjusting cylinder and the lower locking device are hinged to the inner side of the clamping connecting rod, and the outer side of the clamping connecting rod is hinged to the bottom ends of the upper adjusting cylinder and the upper locking device. The top ends of the upper adjusting cylinder and the upper locking device are hinged to the bottom of the narrow inner bridge.

[0014] The upper and lower locking devices have the same structure, both including a locking mounting box, a travel rack, a locking rack and a rack cylinder. The closed end of the locking mounting box is connected to the box lug, and the travel rack is inserted into the open end of the locking mounting box. The part of the travel rack outside the locking mounting box is connected to the rack lug. The left side of the travel rack is provided with a side tooth, and the top and bottom surfaces of the travel rack are provided with travel slide rails. The travel slide rails slide in cooperation with the travel grooves opened on the inner wall of the locking mounting box.

[0015] The locking mounting box has a side stroke opening on its side, which is directly opposite the side long tooth. The top of the locking mounting box is connected to one side of the locking top cover via a locking support. The part of the bottom surface of the locking top cover away from the locking support is connected to the top of the rack cylinder. The output end of the rack cylinder is connected to the top of the locking rack located below it. After passing through the side stroke opening, the locking rack engages with the side long tooth located next to it.

[0016] The top of the outer telescopic platform is provided with an outer reinforcing ring, and inside the outer reinforcing ring is a concentric inner ring of a support bearing. The outer side of the inner ring of the support bearing is connected to the inner side of the outer reinforcing ring by multiple outer reinforcing ribs. The part of the outer side of the inner ring of the support bearing located above the outer reinforcing ribs engages with the inner side of the outer ring of the support bearing.

[0017] The top of the inner telescopic platform is provided with a row of rollers on each side. Each roller group includes multiple rollers arranged in sequence. The front and rear ends of each roller are connected to the top of the inner telescopic platform through a wheel frame.

[0018] Multiple through windows are provided on the inner telescopic platform between the two rows of rollers; the bottom surface of the inner telescopic platform is connected to the top of a row of support cylinders on both sides of the area occupied by all the through windows.

[0019] The support foot includes a foot base and a foot platform located in the middle. The middle part of the foot platform is connected to the bottom of the support cylinder by a ball joint. The outer side of the foot platform is connected to multiple extended foot reinforcing ribs.

[0020] The front end of the gear machine passes through the front plate hole opened on the front gear plate, and the rear end of the gear machine passes through the rear plate hole opened on the rear gear plate. The tops of the front and rear gear plates are connected to the bottom of the gear top plate. The top of the gear top plate is connected to the bottom of the front trapezoidal plate, the rear trapezoidal plate, and the gear connecting box. The sides of the front and rear trapezoidal plates are connected to the sides of the gear connecting box. The top of the gear connecting box is connected to the bottom of the inner telescopic platform.

[0021] The support cylinders are arranged in two rows along the two sides of the inner telescopic platform, with each row containing three or more support cylinders; the gear machines are also arranged in two rows along the two sides of the inner telescopic platform, with each row containing two gear machines, which are located between the first two support cylinders in each row.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention relates to a self-moving steel structure bridge for open-pit mines, comprising a trestle, a transport platform, a slewing mechanism, and a traveling mechanism. The slewing mechanism includes meshing inner and outer rings of a support bearing. The traveling mechanism includes an outer telescopic platform and an inner telescopic platform. The top two ends of the transport platform are hinged to the inner ends of a trestle, and the outer ends of the trestle overlap with the top of a mound. A gearbox and gear column assembly are installed at each of the four corners of the transport platform. The bottom of the transport platform is connected to the outer ring of the support bearing, and the inner ring of the support bearing is connected to the top of the outer telescopic platform. Downward-extending outer beams are connected to both sides of the outer telescopic platform. The bottom of the outer extension beams is connected to the top of an outer rack, and the bottom of the outer rack meshes with the output end of a gear mechanism. The rear end of the gear mechanism is connected to the bottom of the inner telescopic platform. The bottom of the inner telescopic platform is connected to the tops of multiple support cylinders, and the bottoms of the support cylinders are connected to support feet. The advantages of this design include:

[0024] First, after the trestle bridge and the mound are connected, vehicles can pass both above and below the transport platform, which can meet the basic requirement of avoiding the intersection of the routes of dump trucks and coal trucks.

[0025] Secondly, when it needs to move along with the open-pit mine boundary, the trestle is first raised to release the overlap with the soil mound. Then, by switching the contact between the gear column, the support leg and the bottom surface of the soil mound, that is, when only the gear column is in contact with the bottom surface of the soil mound, the slewing mechanism can drive the traveling mechanism to rotate 360 ​​degrees, and when only the support leg is in contact with the bottom surface of the soil mound, the slewing mechanism can drive the transport platform and the trestle to rotate 360 ​​degrees, thereby meeting the needs of various overlap angles, various traveling directions and various transport directions, and has strong adaptability.

[0026] Third, since the bottom of the outer telescopic platform and the top of the inner telescopic platform can slide together, when only the support foot is in contact with the bottom surface of the soil mound, the meshing between the outer rack and gear can realize the relative movement between the outer telescopic platform and the inner telescopic platform, thereby realizing the relative movement between the transport platform connected to the outer telescopic platform and the support foot connected to the inner telescopic platform, and thus realizing the movement of the entire self-moving steel structure bridge relative to the bottom surface of the soil mound, so as to move together with the boundary of the open-pit mine, realize the reuse of the mobile bridge, and can be promoted to other open-pit coal mines. Therefore, it has very obvious economic and social benefits.

[0027] Therefore, this invention can not only move along with the boundary of the open-pit mine, but also avoid the intersection of the routes of dump trucks and coal trucks. In addition, it can be reused, is highly adaptable, and reduces the cost of use.

[0028] 2. In this invention, a self-moving steel structure bridge for open-pit mines is constructed. The bottom of the narrow inner bridge is connected to the top surface of a pressure plate via a hydraulic device. The bottom surface of the pressure plate is pressed against the sloping surface of the soil mound. During application, because the trestle bridge and the soil mound overlap, vehicles traveling on the bridge will generate lateral dynamic loads, causing lateral deformation and displacement of the entire steel structure bridge. Consequently, the entire bridge may experience slight and frequent swaying when vehicles travel on the bridge, affecting the bridge's lifespan and the driver's safety. To address this issue, this invention specifically designs a pressure plate that presses against the sloping surface of the soil mound to eliminate this defect. Based on this, the hydraulic device preferably includes at least two hydraulic units arranged sequentially along the pressure plate. Each hydraulic unit includes an upper adjusting cylinder, a pressing connecting rod, a lower adjusting cylinder, a lower locking device, and an upper locking device. This not only provides stable pressing force but also enables multi-angle adjustment of the pressure plate to adapt to different sloping surfaces, thus expanding its adaptability. Therefore, the present invention not only has strong stability and long service life, but also strong adjustability and wide applicability.

[0029] 3. In this invention, a self-moving steel structure bridge for open-pit mines features an upper locking device and a lower locking device with identical structures, both including a locking mounting box, a stroke rack, a locking rack, and a rack cylinder. The closed end of the locking mounting box is connected to a box lug, and a stroke rack capable of relative sliding is inserted into the open end of the locking mounting box. The portion of the stroke rack outside the locking mounting box is connected to the rack lug. In application, the box lug and rack lug can connect to other components or pressure plates in the hydraulic unit, thus extending and retracting together with the adjusting cylinder. Furthermore, once the adjusting cylinder adjusts the pressure plate to the appropriate position, this design preserves the adjustment state through the meshing of the stroke rack and locking rack, avoiding the potential hazards of using only the cylinder—the cylinder may leak. After prolonged use, if the cylinder leaks, the pressure plate cannot effectively adhere to the soil surface. Therefore, this invention provides a better locking effect, ensuring the pressure plate is firmly pressed. Attached Figure Description

[0030] Figure 1 is a three-dimensional structural schematic diagram of the present invention from a frontal viewing angle.

[0031] Figure 2 is a three-dimensional structural diagram of the present invention from a top view.

[0032] Figure 3 is a schematic diagram of the connection between the stack bridge and the pressure plate in this invention.

[0033] Figure 4 is a structural schematic diagram of the locking mounting box in this invention.

[0034] Figure 5 is a schematic diagram of the engagement of the side teeth and locking rack in this invention.

[0035] Figure 6 is a schematic diagram of the cooperation between the travel slide rail and the travel groove in this invention.

[0036] Figure 7 is a bottom view of the transportation platform in this invention.

[0037] Figure 8 is a top view of the external telescopic platform in this invention.

[0038] Figure 9 is a schematic diagram of the connection between the outer rack and the outer telescopic platform in this invention.

[0039] Figure 10 is a schematic diagram of the engagement between the external rack and gear mechanism in this invention.

[0040] Figure 11 is a three-dimensional structural diagram of the inner telescopic platform in this invention.

[0041] Figure 12 is a schematic diagram of the gear connecting box in this invention.

[0042] Figure 13 is a schematic diagram of the support foot in this invention.

[0043] Figure 14 is a flowchart of the operation of the walking and changing direction of the present invention.

[0044] Figure 15 is a schematic diagram of the invention's movement on an inclined plane.

[0045] Figure 16 is a schematic diagram of the internal structure of the gearbox in this invention.

[0046] In the diagram: 1. Mound; 11. Slope; 2. Trellise; 21. Wide outer bridge; 22. Narrow inner bridge; 23. Bridge hinge shaft; 3. Transport platform; 3. Gearbox; 31. Gearbox gear; 311. Gear column; 32. Column sliding gear; 321. Column foot; 33. Rotary mechanism; 4. Inner ring of support bearing; 41. Outer ring of support bearing; 42. Traveling mechanism; 5. Outer telescopic platform; 51. Outer reinforcing ring; 511. Outer reinforcing rib; 512. Inner telescopic platform; 52. Outer extension beam; 53. Outer rack; 54. Gear mechanism; 55. Gear front plate; 551. Front plate hole; 552. Gear rear plate; 553. Rear plate hole; 554. Gear top plate; 555. Front trapezoidal plate; 556. Rear trapezoidal plate; 557. Gear connecting box; 558. Support cylinder; 56. Support foot. 7. Foot base 571, foot platform 572, foot reinforcing rib 573, roller assembly 58, roller 581, wheel frame 582, through window 59, hoisting winch 6, pulley assembly 61, hoisting pulley 62, cable 63, hydraulic device 7, pressure plate 71, hydraulic unit 72, upper adjusting cylinder 73, cylinder lug 731, clamping connecting rod 74, lower adjusting cylinder 75, lower locking device 76, upper locking device 77, locking mounting box 8, stroke rack 81, rack lug 811, side long tooth 812, stroke slide rail 813, locking rack 82, rack cylinder 83, box lug 84, stroke slide groove 85, side stroke opening 86, locking support part 87, locking top cover 88. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Referring to Figures 1-13, a self-moving steel structure bridge for open-pit mines includes a trestle bridge 2, a transport platform 3, a slewing mechanism 4, and a traveling mechanism 5.

[0049] The top two ends of the transport platform 3 are respectively hinged to the inner end of a trestle 2, and the outer end of the trestle 2 overlaps with the top of the soil mound 1. A gearbox 31 is provided at each of the four corners of the transport platform 3. A gear column 32 that slides and engages with the gearbox 31 passes through the inside of the gearbox 31. The top of the gear column 32 is set higher than the transport platform 3, and the bottom of the gear column 32 is in contact with the bottom surface of the soil mound 1.

[0050] The rotary mechanism 4 includes an inner ring 41 of a support bearing and an outer ring 42 of a support bearing sleeved on its outside. The top surface of the outer ring 42 of the support bearing is connected to the bottom surface of the transport platform 3. The inner side of the outer ring 42 of the support bearing meshes with the outer side of the inner ring 41 of the support bearing. The bottom surface of the inner ring 41 of the support bearing is connected to the top of the outer telescopic platform 51.

[0051] The walking mechanism 5 includes an outer telescopic platform 51 and an inner telescopic platform 52. The bottom of the outer telescopic platform 51 is slidably engaged with the top of the inner telescopic platform 52. The two ends of the bottom of the outer telescopic platform 51 are respectively connected to the top of an outer extension beam 53. The bottom of the outer extension beam 53 is connected to the top of an outer rack 54. The bottom of the outer rack 54 meshes with the output end of a gear mechanism 55. The rear end of the gear mechanism 55 is connected to the bottom of the inner telescopic platform 52. The bottom of the inner telescopic platform 52 is connected to the top of multiple support cylinders 56. The bottom of the support cylinders 56 is connected to support feet 57.

[0052] The trestle bridge 2 is a T-shaped structure, including a wide outer bridge 21 and a narrow inner bridge 22. The width of the wide outer bridge 21 is greater than the width of the narrow inner bridge 22. The outer end of the wide outer bridge 21 overlaps with the top of the mound 1. The inner end of the wide outer bridge 21 is connected to the outer end of the narrow inner bridge 22. The inner end of the narrow inner bridge 22 is hinged to the transport platform 3 via a bridge hinge shaft 23.

[0053] A pulley block 61 is connected to each of the front and rear ends of the wide outer bridge 21. A lifting winch 6 corresponding to the pulley block 61 is provided on the transport platform 3 near its front and rear sides. The lifting winch 6 is connected to the corresponding pulley block 61 via a lifting pulley 62, and the lifting pulley 62 is located above the transport platform 3.

[0054] The bottom of the narrow inner bridge 22 is connected to the top surface of the pressure plate 71 via a hydraulic device 7, and the bottom surface of the pressure plate 71 is pressed tightly against the slope surface 11 of the soil pile 1.

[0055] The hydraulic device 7 includes at least two hydraulic units 72 arranged sequentially along the pressure plate 71. Each hydraulic unit 72 includes an upper adjusting cylinder 73, a clamping connecting rod 74, and a lower adjusting cylinder 75. The top end of the clamping connecting rod 74 is hinged to the bottom of the narrow inner bridge 22, and the bottom end of the clamping connecting rod 74 is hinged to the outer side of the pressure plate 71. The inner side of the pressure plate 71 is simultaneously hinged to the bottom ends of the lower adjusting cylinder 75 and the lower locking device 76. The top ends of the lower adjusting cylinder 75 and the lower locking device 76 are hinged to the inner side of the clamping connecting rod 74, and the outer side of the clamping connecting rod 74 is hinged to the bottom ends of the upper adjusting cylinder 73 and the upper locking device 77. The top ends of the upper adjusting cylinder 73 and the upper locking device 77 are hinged to the bottom of the narrow inner bridge 22.

[0056] The upper locking device 77 and the lower locking device 76 have the same structure, both including a locking mounting box 8, a travel rack 81, a locking rack 82 and a rack cylinder 83. The closed end of the locking mounting box 8 is connected to the box lug 84, and the travel rack 81 is inserted into the open end of the locking mounting box 8. The part of the travel rack 81 outside the locking mounting box 8 is connected to the rack lug 811. The left side of the travel rack 81 is provided with a side tooth 812. The top and bottom surfaces of the travel rack 81 are provided with travel slide rails 813, which slide in cooperation with the travel groove 85 opened on the inner wall of the locking mounting box 8.

[0057] The locking mounting box 8 has a side stroke opening 86 on its side, which is directly opposite to the side long tooth 812. The top of the locking mounting box 8 is connected to one side of the locking top cover 88 via the locking support part 87. The part of the bottom surface of the locking top cover 88 away from the locking support part 87 is connected to the top of the rack cylinder 83. The output end of the rack cylinder 83 is connected to the top of the locking rack 82 located below it. The locking rack 82 passes through the side stroke opening 86 and engages with the side long tooth 812 located on its side.

[0058] The top of the outer telescopic platform 51 is provided with an outer reinforcing ring 511, and a concentric inner ring 41 of the support bearing is provided inside the outer reinforcing ring 511. The outer side of the inner ring 41 of the support bearing is connected to the inner side of the outer reinforcing ring 511 by multiple outer reinforcing ribs 512. The part of the outer side of the inner ring 41 of the support bearing located above the outer reinforcing ribs 512 engages with the inner side of the outer ring 42 of the support bearing.

[0059] The top of the inner telescopic platform 52 is provided with a row of roller groups 58 on each side of the inner telescopic platform 52. The roller group 58 includes multiple rollers 581 arranged in sequence. The front and rear ends of the rollers 581 are connected to the top of the inner telescopic platform 52 through the wheel frame 582.

[0060] Multiple through windows 59 are provided on the inner telescopic platform 52 between the two rows of roller groups 58; the bottom surface of the inner telescopic platform 52 is connected to the top of a row of support cylinders 56 on both sides of the area occupied by all the through windows 59.

[0061] The support foot 57 includes a foot base 571 and a foot platform 572 located in the middle. The middle part of the foot platform 572 is connected to the bottom of the support cylinder 56 by a ball joint. The outer side of the foot platform 572 is connected to multiple extended foot reinforcing ribs 573.

[0062] The front end of the gear mechanism 55 passes through the front plate hole 552 on the front gear plate 551, and the rear end of the gear mechanism 55 passes through the rear plate hole 554 on the rear gear plate 553. The tops of the front gear plate 551 and the rear gear plate are connected to the bottom of the gear top plate 555. The top of the gear top plate 555 is connected to the bottom of the front trapezoidal plate 556, the rear trapezoidal plate 557, and the gear connecting box 558. The sides of the front trapezoidal plate 556 and the rear trapezoidal plate 557 are connected to the sides of the gear connecting box 558. The top of the gear connecting box 558 is connected to the bottom of the inner telescopic platform 52.

[0063] The support cylinders 56 are arranged in two rows along the two sides of the inner telescopic platform 52, with each row containing three or more support cylinders 56; the gear machines 55 are also arranged in two rows along the two sides of the inner telescopic platform 52, with each row containing two gear machines 55, which are located between the first two support cylinders 56 in each row.

[0064] The principle of this invention is explained as follows:

[0065] The mound 1 in this invention includes a top (overlapping with the trestle 2), a bottom surface (in contact with the bottom of the gear column 32 or the support leg 57), and a sloping surface 11 between the two. In application, when the self-moving steel structure bridge is stationary, the transport platform 3 in the self-moving steel structure bridge is used for dump trucks, while the area below the transport platform 3 and located between the gear columns 32 is used for coal trucks.

[0066] Example 1:

[0067] Referring to Figures 1-13, a self-moving steel structure bridge for open-pit mines includes a trestle 2, a transport platform 3, a slewing mechanism 4, and a traveling mechanism 5. The top surfaces of the transport platform 3 are hinged at both ends to the inner ends of a trestle 2, and the outer ends of the trestle 2 overlap with the top of a mound 1. A gearbox 31 is installed at each of the four corners of the transport platform 3. Inside each gearbox 31, a gear post 32 slides vertically and engages with it (as shown in Figure 16, a single gearbox 31 contains multiple gearbox gears 311 to mesh with the sliding teeth 321 on the gear post 32). The top of the gear post 32 is higher than the transport platform 3, and the bottom of the gear post 32 contacts the bottom surface of the mound 1. The slewing mechanism 4 includes an inner ring 41 of a support bearing and an outer support bearing. The outer ring 42 of the support bearing has its top surface connected to the bottom surface of the transport platform 3. The inner side of the outer ring 42 of the support bearing meshes with the outer side of the inner ring 41 of the support bearing. The bottom surface of the inner ring 41 of the support bearing is connected to the top of the outer telescopic platform 51. The traveling mechanism 5 includes an outer telescopic platform 51 and an inner telescopic platform 52. The bottom of the outer telescopic platform 51 is slidably engaged with the top of the inner telescopic platform 52. The two ends of the bottom of the outer telescopic platform 51 are respectively connected to the top of an outer extension beam 53. The bottom of the outer extension beam 53 is connected to the top of an outer rack 54. The bottom of the outer rack 54 meshes with the output end of a gear machine 55. The rear end of the gear machine 55 is connected to the bottom of the inner telescopic platform 52. The bottom of the inner telescopic platform 52 is connected to the top of multiple support cylinders 56. The bottom of the support cylinders 56 is connected to support feet 57.

[0068] In application, the top of the transport platform 3 is used for dump trucks, while the area below the transport platform 3, located between the gear columns 32, is used for coal trucks.

[0069] Example 2:

[0070] The basic content is the same as in Example 1, except that:

[0071] The trestle bridge 2 is a T-shaped structure, including a wide outer bridge 21 and a narrow inner bridge 22. The width of the wide outer bridge 21 is greater than the width of the narrow inner bridge 22. The outer end of the wide outer bridge 21 overlaps with the top of the mound 1, and the inner end of the wide outer bridge 21 is connected to the outer end of the narrow inner bridge 22. The inner end of the narrow inner bridge 22 is hinged to the transport platform 3 via a bridge hinge shaft 23. A pulley block 61 is connected to each of the front and rear ends of the wide outer bridge 21. A lifting winch 6 corresponding to the pulley block 61 is provided on the transport platform 3 near its front and rear sides. The lifting winch 6 is connected to the corresponding pulley block 61 via a lifting pulley 62, and the lifting pulley 62 is located above the transport platform 3. The bottom of the narrow inner bridge 22 is connected to the top surface of the pressure plate 71 via a hydraulic device 7. The bottom surface of the pressure plate 71 is pressed against the slope surface 11 of the soil mound 1. The hydraulic device 7 includes at least two hydraulic units 72 arranged sequentially along the pressure plate 71. Each hydraulic unit 72 includes an upper adjusting cylinder 73, a pressing connecting rod 74, and a lower adjusting cylinder 75. The top end of the pressing connecting rod 74 is hinged to the bottom of the narrow inner bridge 22. The bottom end of 4 is hinged to the outer side of the pressure plate 71. The inner side of the pressure plate 71 is simultaneously hinged to the bottom ends of the lower adjusting cylinder 75 and the lower locking device 76. The top ends of the lower adjusting cylinder 75 and the lower locking device 76 are hinged to the inner side of the pressing connecting rod 74. The outer side of the pressing connecting rod 74 is hinged to the bottom end of the upper adjusting cylinder 73 and the upper locking device 77. The top ends of the upper adjusting cylinder 73 and the upper locking device 77 are hinged to the bottom of the narrow inner bridge 22.

[0072] When the self-propelled steel structure bridge moves to the required position, the hoisting winch 6 drives the trestle 2 via the hoisting pulley 62 and pulley block 61 to lower the trestle 2 and place one end of it on the soil pile 1. Then, the upper adjusting cylinder 73 and the lower adjusting cylinder 75 in the hydraulic device 7 adjust the angle of the pressure plate 71 so that the pressure plate 71 is in contact with and pressed tightly against the soil pile 1. Then, the upper locking device 77 and the lower locking device 76 lock themselves, thereby locking the upper adjusting cylinder 73 and the lower adjusting cylinder 75 (the locking device and the adjusting cylinder are set side by side). At this time, vehicles can pass normally.

[0073] The upper locking device 77 and the lower locking device 76 are respectively locked by the output end of the rack cylinder 83 driving the locking rack 82 to be lowered so as to mesh with the side teeth 812 provided on the side of the stroke rack 81, thereby locking the stroke rack 81, fixing the length of the upper locking device 77 and the lower locking device 76, and thus fixing the length of the upper adjusting cylinder 73 and the lower adjusting cylinder 75.

[0074] Example 3:

[0075] The basic content is the same as in Example 2, except that:

[0076] When this self-moving steel structure bridge needs to be moved, first release the engagement of the locking rack 82 and the side long tooth 812, then release the clamping mechanism 2 from pressing the pressure plate 71 through the upper adjusting cylinder 73 and the lower adjusting cylinder 75, so that the pressure plate 71 is disengaged from the slope surface 11 of the soil mound 1. Then drive the trestle bridge 2 to rotate and lift it up to a certain angle. Then drive the gear machine 55 to drive the outer rack 54, so that the inner telescopic platform 52 moves forward a certain distance relative to the outer telescopic platform 51. Then the support cylinder 56 drives the support foot 57 to descend until the support foot 57 is in contact with the bottom surface of the soil mound 1. The gearbox 31 drives the gear column 32 to rise, so that the gear column 32 is lifted off the ground. The bottom end of the gear column 32 is connected to the column foot 33. At this time, the inner telescopic platform 52 is fixed in place because of the contact between the support foot 57 and the ground. Then, the gear machine 55 drives the outer rack 54 to move the outer telescopic platform 51 forward a certain distance, thereby driving the entire transport platform 3 forward, thus realizing a step movement. This cycle is repeated to realize the repetition of multiple step movements, thereby realizing the large-distance movement of this self-moving steel structure bridge.

[0077] Example 4:

[0078] The basic content is the same as in Example 1, except that:

[0079] Referring to Figure 14, when the self-propelled steel structure bridge needs to turn during travel, the bottom end of the drive gear column 32 first contacts the ground, then drives the inner ring 41 of the support bearing to rotate 90 degrees, thereby causing the outer ring 42 of the support bearing to rotate 90 degrees, which in turn causes the traveling mechanism 5 to rotate 90 degrees. Then, the support cylinder 56 drives the support foot 57 to descend until the support foot 57 contacts the bottom surface of the mound 1. Then, the gearbox 31 drives the gear column 32 to rise so that the gear column 32 is off the ground. Then, the inner ring 41 of the support bearing rotates 90 degrees, thereby causing the outer ring 42 of the support bearing to rotate 90 degrees, which in turn causes the transport platform 3 and the trestle 2 to rotate 90 degrees. Then, the gear column 32 is driven to descend until the support foot 57 of the traveling mechanism 5 contacts the ground, and then another reverse movement begins.

[0080] Example 5:

[0081] The basic content is the same as in Example 4, except that:

[0082] Referring to Figure 15, when walking on the slope 11, it is similar to walking on flat ground. The difference is that when the support cylinder 56 drives the support foot 57 to contact the ground, the piston rod of each support cylinder 56 extends a different distance to ensure that the inner telescopic platform 52 is horizontal, thereby ensuring that the entire transport platform 3 is horizontal.

[0083] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. A self-moving steel structure bridge for open-pit mines, characterized in that: The self-propelled steel structure bridge for open-pit mines includes a trestle (2), a transport platform (3), a slewing mechanism (4), and a traveling mechanism (5). The top surfaces of the transport platform (3) are hinged to the inner ends of a trestle (2), and the outer ends of the trestle (2) overlap with the top of a mound (1). A gearbox (31) is installed at each of the four corners of the transport platform (3). Inside each gearbox (31) passes a gear post (32) that slides vertically with it. The top of the gear post (32) is higher than the transport platform (3). The bottom of the column (32) is in contact with the bottom surface of the mound (1); the rotating mechanism (4) includes an inner ring (41) of a support bearing and an outer ring (42) of a support bearing sleeved on its outside. The top surface of the outer ring (42) of the support bearing is connected to the bottom surface of the transport platform (3). The inner side of the outer ring (42) of the support bearing meshes with the outer side of the inner ring (41) of the support bearing. The bottom surface of the inner ring (41) of the support bearing is connected to the top of the outer telescopic platform (51); the walking mechanism (5) includes an outer telescopic platform (51) and an inner telescopic platform (52). The outer telescopic platform (51) The bottom of the outer telescopic platform (51) is slidably engaged with the top of the inner telescopic platform (52). The two ends of the bottom of the outer telescopic platform (51) are respectively connected to the top of an outer extension beam (53). The bottom of the outer extension beam (53) is connected to the top of the outer rack (54). The bottom of the outer rack (54) meshes with the output end of the gear machine (55). The rear end of the gear machine (55) is connected to the bottom of the inner telescopic platform (52). The bottom of the inner telescopic platform (52) is connected to the top of multiple support cylinders (56). The bottom of the support cylinders (56) is connected to the support foot (57). The above-mentioned self-moving steel structure bridge operates according to the following steps: When the above-mentioned self-moving steel structure bridge needs to move, the support foot (57) is lowered to contact the bottom surface of the soil pile (1), and then the external rack (54) and gear machine (55) are driven to mesh with each other to realize the relative movement between the external telescopic platform (51) and the internal telescopic platform (52), thereby realizing the relative movement between the transport platform (3) connected on the external telescopic platform (51) and the support foot (57) connected on the internal telescopic platform (52), and thus realizing the movement of the above-mentioned self-moving steel structure bridge relative to the ground, that is, walking;When the self-moving steel structure bridge needs to turn during its movement, the bottom end of the drive gear column (32) first contacts the ground, then the inner ring (41) of the support bearing rotates 90 degrees, causing the outer ring (42) of the support bearing to rotate 90 degrees, thereby causing the walking mechanism (5) to rotate 90 degrees. Then, the support cylinder (56) drives the support foot (57) to descend until the support foot (57) contacts the bottom surface of the mound (1). Then, the gearbox (31) drives the gear column (32) to rise so that the gear column (32) is off the ground. Then, the inner ring (41) of the support bearing rotates 90 degrees, causing the outer ring (42) of the support bearing to rotate 90 degrees, thereby causing the transport platform (3) to rotate 90 degrees. Then, the gear column (32) is driven to descend until the support foot (57) of the walking mechanism (5) contacts the ground, and then the reverse movement begins.

2. A self-moving steel structure bridge for open-pit mines according to claim 1, characterized in that: The trestle (2) is a T-shaped structure, including a wide outer bridge (21) and a narrow inner bridge (22). The width of the wide outer bridge (21) is greater than the width of the narrow inner bridge (22). The outer end of the wide outer bridge (21) overlaps with the top of the mound (1). The inner end of the wide outer bridge (21) is connected to the outer end of the narrow inner bridge (22). The inner end of the narrow inner bridge (22) is hinged to the transport platform (3) via a bridge hinge shaft (23). A pulley group (61) is connected to each of the front and rear ends of the wide outer bridge (21). A lifting winch (6) corresponding to the pulley group (61) is provided on the transport platform (3) near its front and rear sides. The lifting winch (6) is connected to the corresponding pulley group (61) via a lifting pulley (62), and the lifting pulley (62) is located above the transport platform (3).

3. A self-moving steel structure bridge for open-pit mines according to claim 2, characterized in that: The bottom of the narrow inner bridge (22) is connected to the top surface of the pressure plate (71) via a hydraulic device (7), and the bottom surface of the pressure plate (71) is pressed against the slope surface (11) of the soil mound (1). The hydraulic device (7) includes at least two hydraulic units (72) arranged sequentially along the pressure plate (71). Each hydraulic unit (72) includes an upper adjusting cylinder (73), a pressing connecting rod (74), and a lower adjusting cylinder (75). The top end of the pressing connecting rod (74) is hinged to the bottom of the narrow inner bridge (22). The bottom end of (74) is hinged to the outer side of the pressure plate (71), the inner side of the pressure plate (71) is hinged to the bottom end of the lower adjusting cylinder (75) and the lower locking device (76), the top end of the lower adjusting cylinder (75) and the lower locking device (76) is hinged to the inner side of the pressing rod (74), the outer side of the pressing rod (74) is hinged to the bottom end of the upper adjusting cylinder (73) and the upper locking device (77), and the top end of the upper adjusting cylinder (73) and the upper locking device (77) is hinged to the bottom of the narrow inner bridge (22).

4. A self-moving steel structure bridge for open-pit mines according to claim 3, characterized in that: The upper locking device (77) and the lower locking device (76) have the same structure, both including a locking mounting box (8), a travel rack (81), a locking rack (82), and a rack cylinder (83). The closed end of the locking mounting box (8) is connected to the box lug (84), and the travel rack (81) is inserted into the open end of the locking mounting box (8). The part of the travel rack (81) outside the locking mounting box (8) is connected to the rack lug (811). The left side of the travel rack (81) is provided with a side tooth (812). The top and bottom surfaces of the travel rack (81) are provided with travel slide rails (813), and the travel slide rails (813) are connected to the locking mounting box. (8) The inner wall of the box is provided with a sliding groove (85) for sliding engagement; the side of the locking mounting box (8) is provided with a side stroke opening (86), which is directly opposite to the side long tooth (812). The top of the locking mounting box (8) is connected to one side of the locking top cover (88) via the locking support part (87). The part of the bottom surface of the locking top cover (88) away from the locking support part (87) is connected to the top of the rack cylinder (83). The output end of the rack cylinder (83) is connected to the top of the locking rack (82) located below it. The locking rack (82) passes through the side stroke opening (86) and engages with the side long tooth (812) located next to it.

5. A self-moving steel structure bridge for open-pit mines according to any one of claims 1-4, characterized in that: The top of the outer telescopic platform (51) is provided with an outer reinforcing ring (511), and a concentric inner ring (41) of the outer reinforcing ring (511) is provided inside the outer reinforcing ring (511). The outer side of the inner ring (41) of the support bearing is connected to the inner side of the outer reinforcing ring (511) through multiple outer reinforcing ribs (512). The part of the outer side of the inner ring (41) of the support bearing above the outer reinforcing ribs (512) meshes with the inner side of the outer ring (42) of the support bearing.

6. A self-moving steel structure bridge for open-pit mines according to any one of claims 1-4, characterized in that: The top of the inner telescopic platform (52) is provided with a row of roller groups (58) on each side of the inner telescopic platform (52). The roller group (58) includes multiple rollers (581) arranged in sequence. The front and rear ends of the rollers (581) are connected to the top of the inner telescopic platform (52) through the wheel frame (582).

7. A self-moving steel structure bridge for open-pit mines according to claim 6, characterized in that: Multiple through windows (59) are provided on the inner telescopic platform (52) between the two rows of roller groups (58); the bottom surface of the inner telescopic platform (52) is connected to the top of a row of support cylinders (56) on both sides of the area occupied by all the through windows (59).

8. A self-moving steel structure bridge for open-pit mines according to claim 7, characterized in that: The support foot (57) includes a foot base (571) and a foot platform (572) located in the middle. The middle part of the foot platform (572) is connected to the bottom of the support cylinder (56) by a ball joint. The outer side of the foot platform (572) is connected to multiple extended foot reinforcing ribs (573).

9. A self-moving steel structure bridge for open-pit mines according to any one of claims 1-4, characterized in that: The front end of the gear machine (55) passes through the front plate hole (552) on the front plate (551), and the rear end of the gear machine (55) passes through the rear plate hole (554) on the rear plate (553). The top of the front plate (551) and the rear plate are connected to the bottom of the gear top plate (555). The top of the gear top plate (555) is connected to the bottom of the front trapezoidal plate (556), the rear trapezoidal plate (557), and the gear connecting box (558). The sides of the front trapezoidal plate (556) and the rear trapezoidal plate (557) are connected to the sides of the gear connecting box (558). The top of the gear connecting box (558) is connected to the bottom of the inner telescopic platform (52).

10. A self-moving steel structure bridge for open-pit mines according to claim 9, characterized in that: The support cylinders (56) are arranged in two rows along the two sides of the inner telescopic platform (52), and the number of support cylinders (56) in each row is greater than or equal to three; the gear machines (55) are also arranged in two rows along the two sides of the inner telescopic platform (52), and the number of gear machines (55) in each row is two, and the two gear machines (55) are located between the first two support cylinders (56) in each row of support cylinders (56).

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