Duct piece elevator for shield tunneling machine

Abstract

The utility model discloses a duct piece elevator for a shield tunneling machine, which comprises at least two jacking oil cylinders, the telescopic top end of each jacking oil cylinder is respectively and fixedly connected with a jacking frame, the bottom end of each jacking oil cylinder is fixedly connected to a bottom support, and the two ends of the bottom support are used for being fixedly connected to a shield tunneling machine trolley. The two supporting arm oil cylinders are arranged at the bottoms of the two sides of the jacking frame respectively, the telescopic end of each supporting arm oil cylinder is in transmission connection with the corresponding supporting arm through a hinge mechanism, and the supporting arms located at the bottoms of the two sides of the jacking frame are used for supporting and lifting the duct pieces. By the adoption of the technical scheme, the jacking oil cylinder drives the jacking frame to move upwards, finally, the duct pieces are unloaded from the duct piece transport vehicle, and the problems that the efficiency is low and the safety is poor when the duct pieces are unloaded manually are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine equipment, in particular to a segment hoist for a shield machine. Background Art

[0002] At present, the domestic shield construction process is relatively mature. The segments of the shield machine construction process are usually transported from the starting shaft of the tunneling to the vicinity of the pipe assembly machine by marshaling a pipe segment transport vehicle train, and then hoisted to the location of the pipe assembly machine by a pipe segment crane to facilitate the pipe assembly operation. Due to the narrow space inside the tunnel, the pipe segment crane cannot directly lift the pipe segment from the pipe segment transport vehicle. The pipe segment needs to be manually unloaded from the transport vehicle before hoisting. Due to the heavy weight of the pipe segment, manual hoisting is inefficient and prone to shaking, which poses a safety hazard and is easy to damage the pipe segment. At the same time, because the pipe segment transport vehicle has been occupying the track during the hoisting process, the shield machine excavation debris has not been transported out, which seriously affects the overall construction progress of the shield machine excavation. Utility Model Content

[0003] The utility model aims to provide a segment hoist for a shield machine, which is used to solve the problem of poor segment hoisting operation effect in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A segment hoist for a shield machine, comprising:

[0006] Lifting frame;

[0007] At least two jacking cylinders, the telescopic top end of each jacking cylinder being respectively fixedly connected to the jacking frame;

[0008] A bottom bracket, to which the bottom end of the jacking cylinder is fixedly connected, and both ends of the bottom bracket are used to be fixedly connected to the shield machine trolley;

[0009] Two support arm cylinders are respectively arranged at the bottom of both sides of the jacking frame. The telescopic end of each support arm cylinder is connected to the support arm through a hinge mechanism. The support arms located at the bottom of both sides of the jacking frame are used to support and lift the pipe segments.

[0010] As a further solution of the utility model: the hinge mechanism includes a connecting rod and a hinge seat, one end of the connecting rod is rotatably connected to the telescopic end of the support arm cylinder, and the other end is fixedly sleeved on the pin shaft of the hinge seat, one end of the support arm is rotatably connected to the hinge seat through the pin shaft, and the hinge seat is fixedly installed at the bottom of the lifting frame.

[0011] As a further solution of the utility model: sliding blocks of an integral structure are symmetrically provided on the outer walls of both sides of the lifting frame, and the sliding blocks are slidably connected in the limiting grooves on the I-beam track, and the upper and lower ends of the I-beam track are respectively fixedly connected to the shield machine trolley.

[0012] As a further solution of the utility model: oblique supporting ribs are arranged at the corner positions of the top of the jacking frame.

[0013] As a further solution of the utility model: one end of the support arm oil cylinder away from the support arm is fixedly mounted on the connecting beam through an adjusting pad, and the connecting beam is fixedly connected to the bottom of the jacking frame.

[0014] As a further solution of the utility model: a rubber pad is provided on the top surface of the support arm, and the top end surface of the rubber pad is in the shape of an inclined surface.

[0015] As a further solution of the utility model: a plurality of countersunk holes are provided on the inclined top surface of the rubber pad, and the support arm and the rubber pad are fixedly connected by bolts in the countersunk holes.

[0016] As a further solution of the utility model: a plurality of anti-skid grooves are arranged in parallel on the inclined top surface of the rubber pad, and the arrangement direction of the anti-skid grooves is consistent with the length direction of the rubber pad.

[0017] Beneficial effects of the utility model:

[0018] (1) The utility model provides a jacking cylinder to drive the jacking frame and the support arm to move upward, so as to unload the pipe segment from the pipe segment transport vehicle, replacing the manual operation mode, which is convenient for improving work efficiency. After the pipe segment is quickly unloaded, the pipe segment transport vehicle leaves the track to make way for the tunneling slag transportation, which can ensure the normal progress of the tunneling work. At the same time, compared with manual operation, the jacking cylinder is more stable and has a larger load capacity, which can prevent the shaking of the pipe segment during the lifting process, causing safety hazards and damage to the pipe segment;

[0019] (2) Rubber pads are set on the support arms to reduce vibration when the support arms contact the pipe segments. At the same time, the anti-skid grooves on the rubber pads can effectively prevent the pipe segments from slipping when they are lifted. After the rubber pads have aged due to long-term use, the bolts in the countersunk holes can be removed and replaced with new rubber pads. When the pipe segments do not need to be lifted and unloaded, the support arms can be adjusted to both sides of the lifting frame by extending the support arm cylinders to reduce space occupancy and facilitate the work of the shield machine excavation workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the jacking segment state of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the utility model in a state where the pipe segment is not pushed up;

[0024] Figure 4 It is a side view of the utility model in the state of lifting the pipe segment;

[0025] Figure 5 It is a partial enlarged view of the support arm structure of the utility model;

[0026] Figure 6 It is a schematic diagram of the sliding cooperation I-beam track of the jacking frame of the utility model.

[0027] In the figure: 1. lifting frame; 101. sliding block; 102. oblique supporting rib; 103. connecting rod; 104. hinge seat; 2. lifting cylinder; 3. supporting arm cylinder; 301. adjusting pad; 302. connecting beam; 4. bottom bracket; 5. supporting arm; 501. rubber pad; 502. countersunk hole; 503. anti-skid groove; 6. pipe segment; 7. I-beam track; 8. pipe segment transport vehicle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, "multiple" and "several" mean at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0030] See also Figures 1 to 4As shown, the utility model is a segment hoist for a shield machine, comprising a jacking frame 1, at least two jacking cylinders 2, a bottom bracket 4 and two support arm cylinders 3, the telescopic top ends of each jacking cylinder 2 are respectively fixedly connected to the jacking frame 1, the bottom bracket 4 is fixedly connected to the bottom end of the jacking cylinder 2, and the two ends of the bottom bracket 4 are used to be fixedly connected to the shield machine trolley, the two support arm cylinders 3 are respectively arranged at the bottom of both sides of the jacking frame 1, the telescopic end of each support arm cylinder 3 is connected to the support arm 5 through a hinge mechanism, and the support arms 5 located at the bottom positions on both sides of the jacking frame 1 are used to support and lift the segment 6.

[0031] During the operation of the segment hoist of the present application, the segment transport vehicle 8 transports the segment 6 from the starting shaft of the shield machine to a position inside the shield machine that is convenient for the segment crane to grab. Due to the small space in the tunnel, it is not convenient for the segment crane to grab the segment 6. At this time, the lifting cylinder 2 in the segment hoist of the shield machine is extended to drive the entire lifting frame 1 to move upward, thereby raising the support arm 5 to a suitable position. After that, the support arm cylinder 3 begins to contract from the initial extended state, and drives the support arm 5 to rotate through the hinge mechanism until the support arm 5 is vertical to the forward direction of the segment transport vehicle 8. At this time, the support arm 5 contacts the bottom of the outer walls on both sides of the segment 6. After that, the lifting cylinder 2 continues to extend upward to lift the segment 6 out of the segment transport vehicle 8, and then the transport vehicle drives away. After that, the lifting cylinder 2 is controlled to contract to place the segment 6 steadily on the trolley deck.

[0032] During the operation of the segment hoist of the present application, since the segments 6 are unloaded from the segment transport vehicle 8 to the trolley deck, the lower position provides sufficient space for the segment crane to grab the segments 6 in the narrow excavation tunnel.

[0033] In this specific implementation mode, Figure 1 As shown, the hinge mechanism includes a connecting rod 103 and a hinge seat 104, one end of the connecting rod 103 is rotatably connected to the telescopic end of the support arm cylinder 3, and the other end is fixedly sleeved on the pin of the hinge seat 104, one end of the support arm 5 is rotatably connected to the hinge seat 104 through the pin, and the hinge seat 104 is fixedly installed at the bottom of the jacking frame 1; when the support arm cylinder 3 extends and drives the connecting rod 103 to rotate along the pin of the hinge seat 104, the pin of the hinge seat 104 drives the support arm 5 to open, so as to release the supporting contact between the support arm 5 and the pipe segment 6; conversely, when the support arm cylinder 3 contracts and drives the connecting rod 103 to rotate along the pin of the hinge seat 104, the pin of the hinge seat 104 drives the support arm 5 to fold, so as to facilitate the supporting contact between the support arm 5 and the pipe segment 6, so as to control the contraction of the jacking cylinder 2 to place the pipe segment 6 stably on the trolley deck.

[0034] In this specific implementation mode, Figure 6As shown, sliders 101 of an integral structure are symmetrically provided on the outer walls of both sides of the jacking frame 1, and the sliders 101 are slidably connected in the limit grooves on the I-beam track 7, and the upper and lower ends of the I-beam track 7 are respectively fixedly connected to the shield machine trolley; during the up and down movement of the jacking frame 1, the sliders 101 stably slide along the limit grooves on the I-beam track 7 to improve the up and down movement stability of the jacking frame 1, thereby ensuring the safety of lifting and transporting the segment 6, and preventing the segment 6 from tilting due to uneven force on the support arms 5 on both sides during the lifting process, causing a safety accident.

[0035] In this specific implementation mode, Figure 1 As shown, oblique support ribs 102 are provided at the corner positions of the top of the jacking frame 1, and the oblique support ribs 102 connect the upper cross beam and the vertical beams on both sides of the jacking frame 1 to make the structure of the jacking frame 1 more stable.

[0036] In this specific implementation mode, Figure 1 As shown, one end of the support arm cylinder 3 away from the support arm 5 is fixedly installed on the connecting beam 302 by adjusting the pad 301, and the connecting beam 302 is fixedly connected to the bottom of the lifting frame 1; the installation height of the pad 301 on the connecting beam 302 can be adjusted according to actual needs, so as to ensure that after the support arm cylinder 3 is installed, the pipe segment 6 can be completely lifted and separated from the pipe segment transport vehicle 8 within the travel range of the lifting cylinder 2.

[0037] In this specific implementation mode, Figure 5 As shown, a rubber pad 501 is provided on the top surface of the support arm 5, and the top end surface of the rubber pad 501 is inclined; the rubber pad 501 is used to support and lift the pipe segment 6 for protection, and the inclined top end surface of the rubber pad 501 enables the pipe segment 6 to be clamped firmly.

[0038] In this specific implementation mode, Figure 5 As shown, a plurality of countersunk holes 502 are provided on the inclined top surface of the rubber pad 501, and bolts are used in the countersunk holes 502 to keep the support arm 5 and the rubber pad 501 fixedly connected; the countersunk holes 502 ensure that after the rubber pad 501 is installed on the support arm 5 by bolts, when the support arm 5 lifts the pipe segment 6, the bolts will not protrude from the upper surface of the rubber pad 501 and contact the pipe segment 6 after the rubber pad 501 is compressed, thereby avoiding damage to the surface of the pipe segment 6.

[0039] In this specific implementation mode, Figure 5As shown, a plurality of anti-skid grooves 503 are arranged in parallel on the inclined top surface of the rubber pad 501, and the setting direction of the anti-skid grooves 503 is consistent with the length direction of the rubber pad 501; since the environment in the tunnel excavation shaft is complex and humid, the surface of the segment 6 is prone to slipping during the hoisting process after it is wetted. At this time, water droplets condensed from the humid air can flow out along the anti-skid grooves 503 to reduce the possibility of slipping, thereby ensuring the safety of hoisting and unloading of the segment 6.

[0040] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A segment hoist for a shield machine, characterized in that: include: Lifting frame (1); At least two jacking cylinders (2), the telescopic top end of each jacking cylinder (2) being respectively fixedly connected to the jacking frame (1); A bottom bracket (4), the bottom bracket (4) being fixedly connected to the bottom end of the jacking cylinder (2), and both ends of the bottom bracket (4) being used for being fixedly connected to a shield machine trolley; Two support arm cylinders (3) are respectively arranged at the bottom of both sides of the lifting frame (1); the telescopic end of each support arm cylinder (3) is connected to the support arm (5) through a hinge mechanism, and the support arms (5) located at the bottom of both sides of the lifting frame (1) are used to support and lift the pipe segments (6).

2. A segment hoist for a shield machine according to claim 1, characterized in that: The hinge mechanism comprises a connecting rod (103) and a hinge seat (104); one end of the connecting rod (103) is rotatably connected to the telescopic end of the support arm cylinder (3), and the other end is fixedly sleeved on the pin of the hinge seat (104); one end of the support arm (5) is rotatably connected to the hinge seat (104) via the pin; and the hinge seat (104) is fixedly installed at the bottom of the lifting frame (1).

3. A segment hoist for a shield machine according to claim 1, characterized in that: Slide blocks (101) of an integral structure are symmetrically provided on both side outer walls of the jacking frame (1), and the slide blocks (101) are slidably connected in limit grooves on the I-beam rail (7), and the upper and lower ends of the I-beam rail (7) are respectively fixedly connected to the shield machine trolley.

4. A segment hoist for a shield machine according to claim 1, characterized in that: Oblique support ribs (102) are provided at the corner positions of the top of the lifting frame (1).

5. The segment hoist for a shield machine according to claim 1, characterized in that: One end of the support arm oil cylinder (3) away from the support arm (5) is fixedly mounted on a connecting beam (302) via an adjusting pad (301), and the connecting beam (302) is fixedly connected to the bottom of the jacking frame (1).

6. The segment hoist for a shield machine according to claim 1, characterized in that: A rubber pad (501) is provided on the top surface of the support arm (5), and the top end surface of the rubber pad (501) is in the shape of an inclined plane.

7. A segment hoist for a shield machine according to claim 6, characterized in that: A plurality of countersunk holes (502) are provided on the inclined top end surface of the rubber pad (501), and bolts are used in the countersunk holes (502) to keep the support arm (5) and the rubber pad (501) fixedly connected.

8. The segment hoist for a shield machine according to claim 6, characterized in that: A plurality of anti-skid grooves (503) are arranged in parallel on the inclined top surface of the rubber pad (501), and the arrangement direction of the anti-skid grooves (503) is consistent with the length direction of the rubber pad (501).

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