Tool for disassembling screw conveyor of earth pressure shield tunneling machine in hole

Abstract

The utility model relates to a tool for disassembling a screw conveyor of an earth pressure shield machine in a hole, which is applied to the technical field of matched tools of shield machines, solves the technical problem that the screw conveyor in the hole is difficult to disassemble, and comprises a trolley, a grid-shaped frame and a chain block hung on the frame in sequence from bottom to top, a sliding rail is fixed to the upper end of the frame in the axial direction of the tunnel, a sliding block is arranged on the sliding rail in a sliding mode, a lifting lug is fixedly arranged on the sliding block, a screw rod is rotationally arranged on the frame, the screw rod penetrates through the sliding block and is in threaded connection with the sliding block, and the chain block is hung on the lifting lug. The screw conveyor dismounting device has the effect of safely and efficiently dismounting the screw conveyor in a limited space.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling matching shield machines, and more specifically, it relates to a tooling for disassembling a spiral machine hole of an earth pressure shield machine. Background Art

[0002] The shield machine is one of the core equipment in underground tunnel construction. During the design process, the shield machine is specially designed for the stratum. In order to consider the construction efficiency and adaptability of the shield machine, the shield machine is specially designed. With the development of the tunnel industry, the working conditions of the shield construction method are becoming more and more complicated. Due to the narrow site, it involves dismantling the machine inside the tunnel.

[0003] like Figure 7 As shown, an earth pressure shield machine involves dismantling the machine in the tunnel, the screw machine 61 needs to be completely retained and dismantled, and the shield machine shell 63 is dismantled in a destructive manner. In the existing dismantling construction of the screw machine 61, hanging points are set on the shield machine shell 63 and the pipe segment 62, and hand chain hoists 36 are hung on the hanging points. The screw machine can be pulled out only after the hanging points are replaced multiple times and multiple hand chain hoists are used alternately.

[0004] The above method is dangerous and inefficient. In view of the above working conditions, a screw machine extraction tool is designed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a tool for dismantling the spiral machine of an earth pressure shield machine in a tunnel, which has the advantage of safely and efficiently dismantling the spiral machine in a limited space.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a tool for dismantling a spiral machine of an earth pressure shield machine in a tunnel, comprising, from bottom to top, a trolley, a grid-type frame and a hand winch hung on the frame, a slide rail is fixed to the upper end of the frame along the axial direction of the tunnel, a slider is slidably provided on the slide rail, a lifting ear is fixed on the slider, a screw rod is rotatably provided on the frame, the screw rod passes through the slider and is threadedly connected to the slider, and the hand winch is suspended on the lifting ear.

[0007] The above settings achieve the following effects: The screw machine is usually between 14 and 17 meters long, the center of gravity of the screw machine is located in the middle of the screw machine, the rear end of the screw machine is supported by the frame and hand chain hoist, the front end of the screw machine is located inside the main machine, and the screw machine needs to be pulled out continuously. The frame and hand chain hoist provide a strong support point for the screw machine, replacing the method of planting steel bars and anchoring on the pipe segments to increase the lifting points, improve the overall construction safety, and reduce the difficulty of construction; the lifting lug is designed to slide, so when the screw machine is pulled out, there is no need to change the lifting point back and forth, which is more efficient; when the screw machine is pulled out, it is transported out of the tunnel by the pipe segment trolley.

[0008] Further configuration: the frame is specifically made of H-shaped steel welding, a rotating seat is welded on the frame, the screw is rotatably connected in the rotating seat, and sleeves are welded to both ends of the screw after exceeding the frame.

[0009] The above setting achieves the following effects: the frame is made of common profiles on the market, which is simple and convenient to manufacture and does not require complicated machining; the screw passes through the steel section, and the steel plate at the part where the steel section passes through is relatively thin, which makes it difficult to support and stabilize the screw. By welding the sleeve externally, it is ensured that the screw can run more smoothly.

[0010] Further configuration: vertical ladders and horizontal platforms are arranged on both sides of the frame, and the ladders and platforms are detachably fixed to the frame by bolts.

[0011] The above settings achieve the following effects: the conventional diameter of the earth pressure shield machine is between 6 meters and 10 meters, the frame height is 4-5 meters, and the ladder is set up to facilitate the workers to climb and stand, and further facilitate the manual operation of the hand chain hoist. The ladder and platform are fixedly connected to the frame, replacing the existing temporary ladder, improving the safety of the operators.

[0012] It is further provided that: support rods are connected to both sides of the frame by welding, and support wheels are provided at the heads of the support rods to abut against the inner wall of the tunnel.

[0013] The effect achieved by the above settings: Since the weight of the screw machine is between 20 tons and 40 tons, the weight is large and the shaking will be very strong. The frame is relatively high, and the support rods and support wheels are set to prevent the frame from tipping over.

[0014] It is further provided that: the frame comprises an upper section, a connecting section and a lower section which are detachably connected, and the hand chain hoist is provided on the upper section.

[0015] The effect achieved by the above setting is: Since the diameter of the earth pressure shield machine is usually between 6 meters and 10 meters, in order to ensure the versatility of the frame, the overall height of the frame is changed by changing the length of the connecting section to adapt to shield machines of different sizes.

[0016] Further configuration: also includes an auxiliary supporting device, the auxiliary supporting device includes a temporary wheel, a connecting plate arranged on the temporary wheel, a jack welded and fixed on the connecting plate, and a supporting plate fixed on the piston rod of the jack.

[0017] The above settings achieve the following effects: When the screw machine is completely pulled out of the shield, the front end lacks support. At this time, the auxiliary support device supports the front end of the screw machine, making it easier to transport the screw machine out of the tunnel. The screw machine is disassembled into the main machine at an angle, and after being pulled out, the screw machine becomes horizontal. The setting of the jack makes it easier to adjust the posture of the screw machine.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. Since the removal of the screw machine in the hole belongs to the operation in a closed limited space, the screw machine itself is heavy. Through this tooling, the operation is safer;

[0020] 2. During the extraction process of the spiral machine, the number of replacements of the hanging points is reduced, the intermediate transition steps are reduced, and the construction efficiency is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 Schematic diagram of the structure of the slide rail, the slider and the screw rod in this embodiment;

[0024] Figure 4a is a schematic diagram of the structure of the present embodiment before the screw machine is pulled out;

[0025] Figure 4b This is a schematic diagram of the structure of the present embodiment after the screw machine is pulled out.

[0026] Figure 5 This is a schematic diagram of the structure of the support rod and the ladder in this embodiment;

[0027] Figure 6 is a schematic structural diagram of the auxiliary support device embodied in this embodiment;

[0028] Figure 7 It is a schematic diagram of background technology.

[0029] In the figure: 1. frame; 11. ladder; 12. platform; 2. segment trolley; 31. lifting eye; 32. slide rail; 33. slider; 34. screw; 35. sleeve; 36. hand hoist; 41. support wheel; 42. support rod; 5. auxiliary support device; 51. temporary wheel; 52. jack; 53. support plate; 54. connecting plate; 61. screw machine; 62. segment; 63. shell. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0031] Example: Reference Figure 1-4, a tool for dismantling a spiral machine of an earth pressure shield machine in a tunnel, comprising a segment trolley 2, a frame 1 temporarily welded on the segment trolley 2, and a lifting lug 31 arranged on the frame 1. The segment trolley 2 is a supporting equipment for tunnel construction and is not customized additionally. The frame 1 is in a grid shape as a whole, specifically a rectangular frame 1, and the frame 1 is welded from H-shaped steel. Two sets of slide rails 32 are arranged at the upper end of the frame 1 along the axial direction of the tunnel (i.e., the moving direction of the trolley in the figure), and a slider 33 is arranged to slide inside the slide rail 32. The lifting lug 31 is welded and fixed to the slider 33, and the cross-section of the slider 33 is specifically a trapezoid, so as to prevent the slider 33 from falling. A screw 34 is arranged between the slide rails 32, and the screw 34 is threadedly connected to the slider 33, and both ends pass through the frame 1. A sleeve 35 is welded on the frame 1, and the screw 34 is rotatably connected to the sleeve 35.

[0032] refer to Figure 1 -4, when the screw rod 34 is rotated, the slider 33 and the lifting lug 31 slide on the slide rail 32. When the screw machine 61 is pulled out, a lifting point and a hand chain hoist 36 are set in the main machine, and the hand chain hoist 36 holds the front section of the screw machine 61. At this time, the segment trolley 2 and the frame 1 are moved to the rear end of the screw machine 61, and the wheels of the segment trolley 2 are further locked to avoid the shaking of the segment trolley 2 and cause construction risks. Finally, the hand chain hoist 36 is hung on the lifting lug 31, and the hand chain hoist 36 holds the rear section of the screw machine 61. Remove the bolts between the bolt machine and the main machine, turn the screw 34, and the screw 34 drives the lifting ear 31 to move to the extreme position (moving range 1.5m-2m). At this time, replace the front end lifting point of the screw machine 61. After the screw machine 61 is pulled out 1.5-2m, it is ready to adjust the posture. At this time, adjust the posture of the screw machine 61 (adjust to the horizontal direction), unlock the segment trolley 2, move the segment trolley 2, and slowly pull out the screw machine 61 little by little.

[0033] 4 , a number of other welded lifting ears are fixedly welded on the frame 1 for hanging more hand chain hoists 36 to hang the screw machine 61 or adjust the posture of the screw machine 61 .

[0034] Referring to Figures 4-6, the tooling involved in the present invention also includes an auxiliary support device 5. When the center of gravity of the screw machine 61 is separated from the shield tail, the auxiliary support device 5 is installed at the front end of the center of gravity of the screw machine 61. The screw machine 61 is supported by the auxiliary support device 5, and there is no need to replace the lifting point. The auxiliary support device 5 includes a temporary wheel 51, a connecting plate 54 set on the temporary wheel 51, a jack 52 welded and fixed on the connecting plate 54, and a support plate 53 fixed on the piston rod of the jack 52. Two jacks 52 and two support plates 53 are provided, and their positions are in a mirror relationship. The jack 52 is used to adjust the height of the support plate 53, which can cope with complex working conditions on site and better support the screw machine 61.

[0035] refer to Figure 5Since the height of the frame 1 is at least 4-5m, it is difficult for the workers to reach the top of the frame 1 for operation. Therefore, a vertical ladder 11 and a horizontal platform 12 are set on both sides of the frame 1. The ladder 11 and the platform 12 are detachably fixed to the frame 1 by bolts, so that they can be disassembled and shipped separately.

[0036] refer to Figure 5 The two sides of the frame 1 are connected with support rods 42 by welding, and the head of the support rod 42 is provided with a support wheel 41 that abuts against the inner wall of the tunnel. After the screw machine 61 is dismantled and transported to the ground, the support rod 42 is separated from the frame 1 by carbon planing or flame cutting. According to the size of different tunnels, different lengths of support rods 42 are selected. The length of the support rod 42 is welded on site, and the support rod 42 uses 100mm H-shaped steel.

[0037] refer to Figure 5 The frame 1 includes a detachably connected upper half, a connecting section and a lower half, and the hand chain hoist 36 is arranged on the upper half. Usually, the excavation diameter of the earth pressure shield machine is 6-10m. According to the size of the tunnel, the overall height of the frame 1 can be increased or decreased by changing the length of the connecting section.

[0038] The implementation principle of the above embodiment is: by setting the frame 1 as the mobile support of the rear end of the screw machine 61, the number of times of changing the hanging point during the extraction of the screw machine 61 is reduced, ensuring that the extraction of the screw machine 61 is safer and more reliable.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tool for dismantling a spiral machine of an earth pressure shield machine in a tunnel, characterized by: The invention comprises, from bottom to top, a trolley, a grid-type frame (1), and a hand chain hoist (36) hung on the frame (1); a slide rail (32) is fixed to the upper end of the frame (1) along the axial direction of the tunnel; a slider (33) is slidably provided on the slide rail (32); a lifting lug (31) is fixedly provided on the slider (33); a screw rod (34) is rotatably provided on the frame (1); the screw rod (34) passes through the slider (33) and is threadedly connected to the slider (33); and the hand chain hoist (36) is hung on the lifting lug (31).

2. The tooling for dismantling the earth pressure shield machine in the spiral machine tunnel according to claim 1 is characterized in that: The frame (1) is specifically made of H-shaped steel welded, a rotating seat is welded on the frame (1), the screw rod (34) is rotatably connected in the rotating seat, and sleeves (35) are welded to both ends of the screw rod (34) after they extend beyond the frame (1).

3. The tooling for dismantling the earth pressure shield machine in the spiral machine tunnel according to claim 1 is characterized in that: A vertical ladder (11) and a horizontal platform (12) are arranged on both sides of the frame (1), and the ladder (11) and the platform (12) are both detachably fixed to the frame (1) by bolts.

4. The tooling for dismantling the earth pressure shield machine in the spiral machine tunnel according to claim 1 is characterized in that: Support rods (42) are connected to both sides of the frame (1) by welding, and the heads of the support rods (42) are provided with support wheels (41) that abut against the inner wall of the tunnel.

5. The tooling for dismantling the earth pressure shield machine in the spiral tunnel according to claim 1 is characterized in that: The frame (1) comprises an upper section, a connecting section and a lower section which are detachably connected, and the hand chain hoist (36) is arranged on the upper section.

6. The tooling for dismantling the earth pressure shield machine in the spiral tunnel according to claim 1 is characterized in that: The invention also comprises an auxiliary support device (5), wherein the auxiliary support device (5) comprises a temporary wheel (51), a connecting plate (54) arranged on the temporary wheel (51), a jack (52) welded and fixed on the connecting plate (54), and a support plate (53) fixed on the piston rod of the jack (52).

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