A pipe segment hoisting device of a micro shield machine

Abstract

The utility model discloses a pipe piece hoisting device of micro shield machine, specifically relates to the pipe piece hoisting technical field of shield machine, including the rack of setting on the production line, the inside setting of rack has the connecting beam, the inside setting of connecting beam has the hoist, the hoist one side is provided with first telescopic component, and first telescopic component is connected with the connecting beam, and the hoist includes second telescopic component, tow rope, support component and fixed pulley, be provided with movable pulley on second telescopic component, the distance between movable pulley and fixed pulley, the distance is controlled by second telescopic component, and the tow rope passes through fixed pulley and movable pulley and is fixed on support component, adopts above structure, can effectively save the space in micro shield machine, and the space utilization of crane around is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel segment hoisting technology for tunnel boring machines, and specifically to a tunnel segment hoisting device for a micro tunnel boring machine. Background Technology

[0002] Currently, tunnel boring machines (TBMs) play a wide role in tunnel construction, especially micro TBMs with an inner diameter of less than 3 meters, which require guaranteed safety and efficiency. Segment transport, specifically the process of hoisting segments from the trailer to the assembly machine, is an essential step. Most existing segment transport devices currently use electric hoists or segment feeders.

[0003] However, traditional electric hoists use worm gear drives or three-stage gear reduction systems, with the motor shaft perpendicular to the drum shaft. This results in a relatively large overall width and length, making the structure bulky. The brake pads of traditional electric hoists gradually thin over long-term use, or become affected by oil buildup, impacting braking force. This problem is more pronounced in scenarios with frequent start-stop operations. Furthermore, if the hoist chain is severely worn, misaligned, or insufficiently lubricated, it reduces friction between the chain and the sprocket, leading to slippage.

[0004] During the operation of the wafer feeder, hard particles such as sand and gravel mixed in the muddy water can penetrate the bearings, gearboxes, or guide rail gaps, accelerating the wear of the component surfaces, reducing transmission accuracy, and causing lubrication failure. Conductive impurities in the muddy water can adhere to the surface of circuit boards or cables, forming conductive paths, which can lead to leakage and short circuits. When the temperature changes drastically, water vapor can condense into water droplets and adhere to the surface of electronic components, directly causing short circuit failures. Utility Model Content

[0005] The purpose of this invention is to provide a segment hoisting device for a miniature tunnel boring machine, which improves the segment transportation capacity and efficiency of the miniature tunnel boring machine and reduces the space occupied by the segment hoist.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A segment hoisting device for a miniature tunnel boring machine includes a frame installed on a production line, with a connecting beam inside the frame; a hoisting device inside the connecting beam; and a first telescopic component on one side of the hoisting device, which is connected to the connecting beam.

[0008] The lifting device includes a second telescopic assembly, a traction rope, a support assembly, and a fixed pulley; a movable pulley is provided on the second telescopic assembly; the distance between the movable pulley and the fixed pulley is controlled by the second telescopic assembly.

[0009] The traction rope passes through the fixed pulley and the movable pulley and is fixed to the support assembly.

[0010] As a further embodiment of this utility model: the first telescopic component includes a translation cylinder, which is disposed inside the connecting beam. One side of the translation cylinder is hinged to the lifting device, and the other side is connected to the connecting beam.

[0011] As a further embodiment of this utility model: the lifting device further includes two frame side plates symmetrically arranged along the length direction of the lifting device;

[0012] The front wheel and the rear wheel are rotatably mounted on the outer side of the frame side plate, and the front wheel and the rear wheel are symmetrically distributed along the width direction of the frame side plate; the fixed pulley is located close to the front wheel.

[0013] As a further embodiment of this utility model: the lifting device further includes a mounting pin; the second telescopic component includes a lifting cylinder, which is disposed between the two sets of frame side plates via the mounting pin.

[0014] As a further embodiment of this utility model: a bearing seat is provided at the top of the piston rod of the lifting cylinder, and the movable pulley is rotatably mounted on the bearing seat.

[0015] As a further embodiment of this utility model: the midpoints of the pulley grooves of the movable pulley and the fixed pulley are located on the same straight line.

[0016] As a further embodiment of this utility model: a roller is rotatably arranged between the two frame side plates, the roller is located above the frame side plates, and the roller is located at one end near the rear wheel, and the lifting device slides inside the connecting beam through the roller.

[0017] As a further embodiment of this utility model: the support assembly includes a support pin, which is fixedly disposed below the two frame side plates and located between the movable pulley and the fixed pulley, for fixing the traction rope.

[0018] As a further embodiment of this utility model: sliders are symmetrically arranged on both sides of the bearing seat; a sliding groove is provided on the side plate of the frame, the sliding groove is located at one end near the rear wheel, and the length direction of the sliding groove is parallel to the length direction of the side plate of the frame, the slider and the sliding groove are adapted to each other, and the slider slides in the sliding groove.

[0019] As a further embodiment of this utility model: multiple sets of top mounting covers are fixedly provided on the upper surface of the frame side plate, and the multiple sets of top mounting covers are located between two frame side plates, and the top mounting covers are used to connect the two frame side plates.

[0020] The beneficial effects of this utility model are:

[0021] 1. By replacing the rotational motion between the chain and sprocket of a traditional electric hoist with the telescopic movement of two telescopic components, the size of the lifting device can be reduced, resulting in a more compact structure. This also avoids the slippage problem between the chain and sprocket. Inside a miniature tunnel boring machine, this design effectively saves space, significantly improves the utilization efficiency of the space around the crane, and provides convenient conditions for on-site construction personnel.

[0022] 2. During the operation of traditional electric cranes, hard particles such as sand and silt contained in the mud and water can easily penetrate bearings or gearboxes, leading to accelerated wear on component surfaces. Simultaneously, conductive impurities in the mud and water can adhere to circuit boards or cable surfaces, forming conductive paths and causing faults such as leakage and short circuits. Furthermore, when temperatures change drastically, water vapor can condense into droplets and adhere to the surfaces of electronic components, directly causing short circuits. In contrast, the lifting device uses hydraulic cylinders and pulleys in conjunction with wire ropes for lifting, and a secondary hydraulic cylinder achieves translation. This hydraulically driven design avoids faults in electrical components during use, effectively improving the overall performance of the lifting device, significantly reducing the failure rate, and greatly increasing construction efficiency. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the working state of this utility model;

[0026] Figure 3 This is a schematic diagram of the overall internal structure of the connecting beam in this utility model;

[0027] Figure 4 This is a schematic diagram of the overall structure of the lifting device in this utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the lifting device in this utility model;

[0029] Figure 6 This is a top view of the lifting device in this utility model.

[0030] Figure 7 This is a schematic diagram of the hydraulic system portion of this utility model;

[0031] Figure 8 This is a schematic diagram of the overall structure of the translational hydraulic cylinder in this utility model;

[0032] Figure 9 This is a utility model Figure 7 Enlarged structural diagram of section B;

[0033] Figure 10 This is a utility model Figure 7 Enlarged structural diagram of section A.

[0034] In the diagram: 100, lifting device; 200, connecting beam; 300, translation cylinder; 400, segment lifting head; 500, segment; 600, oil pipe drag chain; 700, frame; 101, frame side plate; 102, front wheel; 103, rear wheel; 104, drag chain mounting bracket; 105, top mounting cover; 106, translation cylinder support; 107, support column; 108, fixed pulley; 109, wire rope; 110, lifting cylinder; 111, mounting pin; 112, movable pulley; 113, slider; 114, inner support column; 115, roller; 116, support pin; 117, L-shaped block; 118, first oil inlet; 119, chute; 120, first oil outlet; 301, round hole; 302, second oil inlet. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figures 1-10 As shown, this utility model provides a segment hoisting device for a miniature tunnel boring machine. The device includes a frame 700, with a connecting beam 200 inside the frame 700. A hoisting device 100 is slidably mounted inside the connecting beam 200. A first telescopic component is provided on one side of the hoisting device 100 along its length, the first telescopic component including a translation cylinder 300, which is located inside the connecting beam 200. A segment hoisting head 400 is provided on one side of the centerline along the width of the hoisting device 100, and is located below the hoisting device 100. A hydraulic cable drag chain 600 is provided on one side of the hoisting device 100 along its width, located inside the connecting beam 200. Using a translation cylinder 300 to drive the hoisting device 100, instead of using an electric mechanism, solves the problem that conductive impurities in the mud and water can adhere to the surface of circuit boards or cables during operation, forming conductive paths and causing leakage or short circuits.

[0037] During operation, the lifting device 100 lowers the segment hoisting head 400 to the position of the segment 500, facilitating the installation of the segment 500. After the segment 500 is installed, the lifting device 100 raises the segment hoisting head 400, thereby lifting the segment 500 to a certain height. The translation cylinder 300 moves, causing the lifting device 100, the segment hoisting head 400, and the segment 500 to move together towards the tunnel boring machine assembly machine until the predetermined segment installation position is reached. The lifting device 100 then lowers the segment hoisting head 400 to the ground, separating the segment 500. The segment hoisting head 400 is then raised to a certain height again, and the translation cylinder 300 moves the lifting device 100 and the segment hoisting head 400 back to their original positions. This process is repeated to complete the transfer of the segment 500.

[0038] like Figures 4-7 As shown, the lifting device 100 includes two frame side plates 101 symmetrically arranged along the length of the lifting device 100; front wheels 102 and rear wheels 103 are provided on the outer side of the two frame side plates 101. The two front wheels 102 and the two rear wheels 103 are symmetrically distributed along the width of the frame side plates 101, and the front wheels 102 and the rear wheels 103 are rotatably connected to the frame side plates 101. The front wheels 102 and the rear wheels 103 are used to travel on the connecting beam 200; a drag chain mounting frame 104 is fixedly provided on one side of the frame side plate 101. The drag chain mounting frame 104 and the front wheels 102 are located on the same side of the frame side plate 101, and the drag chain mounting frame 104 is located at the end close to the front wheels 102. An oil pipe drag chain 600 is provided on the drag chain mounting frame 104, and the oil pipe drag chain 600 is connected to the hydraulic system of the tunnel boring machine. By using the front wheels 102 and the rear wheels 103, the sliding friction of the lifting device 100 inside the connecting beam 200 is changed to rolling friction, which reduces the friction between the lifting device 100 and the connecting beam 200, reduces energy consumption, and extends the service life of the lifting device 100 and the connecting beam 200.

[0039] It should be understood that the hydraulic system of the tunnel boring machine is existing technology, and the hydraulic oil inside the lifting device 100 comes from the hydraulic system of the tunnel boring machine.

[0040] Multiple sets of top mounting covers 105 are fixedly installed on the upper surfaces of the two frame side plates 101, and the multiple sets of top mounting covers 105 are located between the two frame side plates 101. The top mounting covers 105 are used to connect the two frame side plates 101 to improve the stability of the device. On the frame side plate 101, a translation cylinder support 106 is provided on the outer side away from the drag chain mounting bracket 104, and the translation cylinder support 106 is located at the end near the front wheel 102. Multiple sets of support columns 107 are fixedly installed above the front wheel 102, and the support columns 107 are located between the two frame side plates 101. The multiple sets of support columns 107 are distributed parallel to the length direction of the frame side plate 101, and the support columns 107 are used to connect the left and right frame side plates 101. A sliding groove 119 is provided on the frame side plate 101 near the rear wheel 103, and the length direction of the sliding groove 119 is parallel to the length direction of the frame side plate 101.

[0041] like Figure 5 As shown, a fixed pulley 108 is provided between the two frame side plates 101. A rotating shaft is provided through the fixed pulley 108, and the rotating shaft is connected to the two frame side plates 101. The fixed pulley 108 is rotatably connected to the two frame side plates 101 through the rotating shaft, and the fixed pulley 108 is located below the support column 107 and close to the front wheel 102. A mounting pin 111 is fixedly provided between the two frame side plates 101, and the mounting pin 111 is located on one side of the fixed pulley 108. A second telescopic assembly is fixedly provided on the mounting pin 111. The second telescopic assembly includes a lifting cylinder 110. The lifting cylinder 110 is located between the two frame side plates 101, and the axial direction of the lifting cylinder 110 is parallel to the length direction of the side frame side plate 101.

[0042] The piston rod of the lifting cylinder 110 is provided with a bearing seat at its top. A movable pulley 112 is installed inside the bearing seat, rotatably connected to the bearing seat. The midpoint of the pulley groove of the movable pulley 112 and the midpoint of the pulley groove of the fixed pulley 108 are on the same straight line. Slider blocks 113 are fixedly installed on both sides of the bearing seat, and the sliders 113 and sliding grooves 119 are mutually compatible, allowing the sliders 113 to slide within the sliding grooves 119. A first oil inlet 118 is provided on the side of the lifting cylinder 110 closest to the cable chain mounting bracket 104, and a first oil outlet 120 is provided on the other side of the lifting cylinder 110. The hydraulic pipes inside the cable chain 600 are connected to the first oil inlet 118 and the first oil outlet 120. Hydraulic oil enters the lifting cylinder 110 through the first oil inlet 118 and the first oil outlet 120, driving the lifting cylinder 110. When oil enters through the first oil inlet 118 and exits through the first oil outlet 120, the lifting cylinder 110 extends; when oil exits through the first oil inlet 118 and enters through the first oil outlet 120, the lifting cylinder 110 extends and retracts.

[0043] Multiple sets of internal support columns 114 are fixedly installed between the two frame side plates 101. The internal support columns 114 are located below the frame side plates 101 and are arranged in parallel. The multiple sets of internal support columns 114 are used to connect the frame side plates 101. A roller 115 is rotatably installed between the two frame side plates 101. The roller 115 is located above the frame side plates 101 and is located at one end near the rear wheel 103. The roller 115 facilitates the sliding of the lifting device 100 inside the connecting beam 200. A support assembly is fixedly installed below the two frame side plates 101. The support assembly includes a support pin 116, and the support pin 116 is located between the movable pulley 112 and the fixed pulley 108.

[0044] The aforementioned lifting device 100 also includes a traction rope, which comprises a steel wire rope 109. One end of the steel wire rope 109 is connected to the segment lifting head 400, and the other end passes sequentially over the fixed pulley 108, then around the movable pulley 112 in the direction of rotation and is fixed to the support pin 116. Through the cooperation of the lifting cylinder 110, the movable pulley 112, and the fixed pulley 108, the problems of the overall large width and length of the equipment, its relatively bulky structure, and slippage between the chain and sprocket are solved, thus improving the stability and safety of the equipment. At the same time, thanks to the smaller drive size and compact structural design, energy loss is effectively reduced, making the operation more efficient and energy-saving.

[0045] By driving the lifting cylinder 110, the movable pulley 112 is moved, which in turn causes the wire rope 109 wound on the movable pulley 112 to move. Following the direction of movement of the wire rope 109, the fixed pulley 108 changes the direction of movement of the wire rope 109. Due to the movement of the wire rope 109, the segment lifting head 400 connected to one end of the wire rope 109 moves up and down.

[0046] like Figures 6-10 As shown, the aforementioned translation cylinder 300 is a two-stage cylinder, including a circular hole 301 and a second oil inlet 302. The circular hole 301 is located on one side of the translation cylinder 300, and the circular hole 301 and the translation cylinder support 106 are rotatably connected by a positioning pin. The translation cylinder 300 is rotatably connected to the lifting device 100 through the circular hole 301 and the cylinder support 106. The second oil inlet 302 is located on the piston rod of the translation cylinder 300. A bearing seat is rotatably mounted on the piston rod on one side of the second oil inlet 302. One end of the bearing seat is fixedly connected to an L-shaped block 117, and the other side of the L-shaped block 117 is fixedly mounted on the connecting beam 200. Hydraulic oil flows from the outside through the second oil inlet 302 into the interior of the translation cylinder 300, driving the translation cylinder 300. By driving the translation cylinder 300, the lifting device 100 slides inside the connecting beam 200.

[0047] The working principle of this utility model:

[0048] A segment hoisting device for a miniature tunnel boring machine mainly includes the following movement processes during operation:

[0049] Translational movement: Hydraulic oil flows from the outside through the second oil inlet 302 into the translation cylinder 300, driving the translation cylinder 300. When the translation cylinder 300 extends or retracts, it pulls the translation cylinder support 106 of the lifting device 100, causing the front wheel 102 and rear wheel 103 of the lifting device 100 to move back and forth on the connecting beam 200, thus realizing the translation of the crane.

[0050] Lifting action: External hydraulic oil enters the first oil inlet 118 through the oil pipe drag chain 600, and then enters the lifting cylinder 110 through the first oil inlet 118, driving the lifting cylinder 110. When the lifting cylinder 110 extends or retracts, it pushes the movable pulley 112 to move, which in turn drives the sliders 113 connected to both sides of the movable pulley 112 to move. The sliders 113 slide in the groove 119 along the opening direction of the groove 119, which in turn pushes the wire rope 109 wrapped around the movable pulley 112. Along the direction of movement of the wire rope 109, the fixed pulley 108 changes the direction of movement of the wire rope 109, turning the extension and retraction movement of the lifting cylinder 110 into the lifting and lowering movement of the segment lifting head 400.

[0051] Work cycle: The lifting device 100 lowers the segment hoisting head 400 to the hole position of the segment 500, allowing the segment hoisting head 400 to smoothly install the segment 500. After the segment 500 is installed, the lifting device 100 lifts the segment hoisting head 400 to raise the segment 500 to a certain height. The translation cylinder 300 retracts, causing the lifting device 100, the segment hoisting head 400, and the segment 500 to move together towards the tunnel boring machine assembly machine until the predetermined segment installation position is reached. The lifting device 100 lowers the segment hoisting head 400 to the ground, and the segment 500 is separated. The segment hoisting head 400 is then lifted to a certain height again, and the translation cylinder 300 extends, causing the lifting device 100 and the segment hoisting head 400 to return to their original positions, thus completing one work cycle.

[0052] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A segment hoisting device for a miniature tunnel boring machine, characterized in that, Includes a frame (700) installed on the production line, wherein a connecting beam (200) is provided inside the frame (700); a lifting device (100) is provided inside the connecting beam (200); a first telescopic component is provided on one side of the lifting device (100), and the first telescopic component is connected to the connecting beam (200); The lifting device (100) includes a second telescopic assembly, a traction rope, a support assembly, and a fixed pulley (108); a movable pulley (112) is provided on the second telescopic assembly; the distance between the movable pulley (112) and the fixed pulley (108) is controlled by the second telescopic assembly; The traction rope passes through the fixed pulley (108) and the movable pulley (112) and is fixed to the support assembly.

2. The segment hoisting device for a miniature tunnel boring machine according to claim 1, characterized in that, The first telescopic assembly includes a translation cylinder (300), which is disposed inside the connecting beam (200). One side of the translation cylinder (300) is hinged to the lifting device (100), and the other side is connected to the connecting beam (200).

3. The segment hoisting device for a miniature tunnel boring machine according to claim 1, characterized in that, The lifting device (100) also includes two frame side plates (101) symmetrically arranged along the length direction of the lifting device (100); A front wheel (102) and a rear wheel (103) are rotatably mounted on the outer side of the frame side plate (101). The front wheel (102) and the rear wheel (103) are symmetrically distributed along the width direction of the frame side plate (101). The fixed pulley (108) is located close to the front wheel (102).

4. The segment hoisting device for a miniature tunnel boring machine according to claim 3, characterized in that, The lifting device (100) further includes a mounting pin (111); the second telescopic assembly includes a lifting cylinder (110), which is disposed between the two sets of the frame side plates (101) via the mounting pin (111).

5. A segment hoisting device for a miniature tunnel boring machine according to claim 4, characterized in that, The piston rod of the lifting cylinder (110) is provided with a bearing seat at the top, and the movable pulley (112) is rotatably mounted on the bearing seat.

6. A segment hoisting device for a miniature tunnel boring machine according to claim 1, characterized in that, The midpoints of the pulley grooves of the movable pulley (112) and the fixed pulley (108) are located on the same straight line.

7. A segment hoisting device for a miniature tunnel boring machine according to claim 3, characterized in that, A roller (115) is rotatably disposed between the two frame side plates (101). The roller (115) is located above the frame side plate (101) and is disposed at one end near the rear wheel (103). The lifting device (100) slides inside the connecting beam (200) via the roller (115).

8. A segment hoisting device for a miniature tunnel boring machine according to claim 3, characterized in that, The support assembly includes a support pin (116), which is fixedly disposed below the two frame side plates (101) and is located between the movable pulley (112) and the fixed pulley (108) for fixing the traction rope.

9. A segment hoisting device for a miniature tunnel boring machine according to claim 5, characterized in that, The bearing housing is symmetrically provided with sliders (113) on both sides; the frame side plate (101) is provided with a sliding groove (119), the sliding groove (119) is located at one end near the rear wheel (103), and the length direction of the sliding groove (119) is parallel to the length direction of the frame side plate (101). The slider (113) and the sliding groove (119) are adapted to each other, and the slider (113) slides in the sliding groove (119).

10. A segment hoisting device for a miniature tunnel boring machine according to claim 3, characterized in that, Multiple sets of top mounting covers (105) are fixedly provided on the upper surface of the frame side plate (101), and the multiple sets of top mounting covers (105) are located between two frame side plates (101). The top mounting covers (105) are used to connect the two frame side plates (101).

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