Pipe piece hoisting device and pipe jacking system

Abstract

The utility model relates to a pipe piece hoisting device and a pipe jacking system, and the pipe piece hoisting device is connected to a hoisting track in a sliding mode and used for hoisting tunnel pipe pieces. The duct piece hoisting device comprises two groups of sliding hoisting assemblies which are independently controlled; the sliding hoisting assembly comprises a driving mechanism and a walking mechanism which are connected to the hoisting track in a sliding mode, the driving mechanism is connected with the walking mechanism and drives the walking mechanism to slide along the hoisting track, and the walking mechanism comprises at least two loop chain hoist assemblies arranged at intervals. The two sets of sliding hoisting assemblies hoist tunnel segments together, and each set of sliding hoisting assembly is connected with the tunnel segments in a hoisting mode through at least one loop chain hoist assembly. The two sets of sliding hoisting assemblies hoist the tunnel segment together, and each set of sliding hoisting assembly is independently controlled and can control the front-back moving position of the tunnel segment. Each sliding hoisting assembly is provided with two chain hoist assemblies, and the two chain hoist assemblies can hoist tunnel segments in turn and can span the pull rod assemblies.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field especially relates to a segment hoisting device and pipe jacking system. BACKGROUND

[0002] In the construction process of the connecting passage, the segment hoisting device moves the segments from the side to the jacking direction of the jacking mechanism, wherein a plurality of tunnel segments are hoisted into the working area of the jacking mechanism and assembled into a whole ring, and the jacking mechanism can jacking the tunnel segments into the construction area of the connecting passage.

[0003] The document with the publication number CN205527378U provides a sliding rail cable system using the segment crane beam follow-up. The sliding rail cable system includes a crane beam supporting the segment crane walking guide, a plurality of cable walking trolleys and a cable pressed and hung on the cable walking trolley, and a connecting rod is arranged between the cable walking trolley adjacent to the segment crane and the segment crane. The crane beam section is an I-shaped section, the cable walking trolley includes vertical plates located on both sides of the crane beam, supporting rollers arranged on the vertical plates and matched with the crane beam, a horizontal plate arranged at the bottom of the two vertical plates, and a pressing plate assembly arranged at the lower part of the horizontal plate and pressing the cable, and side stop wheels are arranged on the upper parts of the two vertical plates on both sides of the crane beam. The cable car and the segment crane share a set of walking beams.

[0004] In the construction of the connecting passage, the pipe jacking machine is connected with the portal through the pull rod assembly, the jacking mechanism is arranged on the pipe jacking machine, and the assembly position of the tunnel segments is located between the jacking mechanism and the portal. The segment hoisting device hoists the two ends of the tunnel segments through two chains, and since the pull rod assembly is located in the moving direction of the chains, the tunnel segments cannot directly enter the assembly position. The existing construction method is as follows: the chains moving in front of the tunnel segments are removed, the chains are hoisted to the tunnel segments after crossing the pull rod assembly, and then the two chains drive the tunnel segments into the assembly area.

[0005] However, in the existing construction method, the chains need to be removed first, the tunnel segments are stabilized by additional auxiliary support, then the chains are connected to the tunnel segments after crossing the pull rod assembly, which not only has a large construction difficulty, but also has the risk of falling of the tunnel segments, and the chains will be inclined and lapped on the pull rod assembly after crossing the pull rod assembly, which has the technical problem of extruding the pull rod assembly during hoisting, and therefore needs to be improved. UTILITY MODEL CONTENT

[0006] In order to overcome the problems in the related art, the utility model embodiment provides a segment hoisting device and pipe jacking system to solve the technical problems of large construction difficulty of tunnel segment assembly and extrusion of chains on the pull rod assembly.

[0007] According to the first aspect of the embodiment of the utility model, provide a kind of segment hoisting device, slidingly connected in hoisting track, for hoisting tunnel segment, the segment hoisting device includes two groups of sliding hoisting components of independent control;

[0008] The sliding hoisting component includes a driving mechanism and a walking mechanism slidingly connected to the hoisting track, the driving mechanism is connected and drives the walking mechanism to slide along the hoisting track, and the walking mechanism includes at least two ring-chain hoist components arranged at intervals.

[0009] Two groups of the sliding hoisting component jointly hoist the tunnel segment, and each group of the sliding hoisting component hoists and connects the tunnel segment by at least one ring-chain hoist component.

[0010] In an embodiment, the walking mechanism further includes a connecting rod mechanism, and the connecting rod mechanism is connected to adjacent two ring-chain hoist components; and / or, the driving mechanism is connected to the closest ring-chain hoist component by a connecting rod mechanism.

[0011] In an embodiment, the connecting rod mechanism includes a connecting rod and an adapter detachably connected to the connecting rod, and the connecting rod is hingedly connected to the ring-chain hoist component or the driving mechanism.

[0012] In an embodiment, the ring-chain hoist component includes a rolling frame erected on the hoisting track, a winch frame and a winch motor mounted on the rolling frame, and a sling member mounted on the winch frame, and the connecting rod mechanism is connected to the rolling frame.

[0013] In an embodiment, the sling member includes a chain and a hook at the end of the chain; or,

[0014] The sling member includes a steel wire rope and a locking member at the end of the chain.

[0015] In an embodiment, two groups of the sliding hoisting component are symmetrically arranged.

[0016] In an embodiment, the walking mechanism is located between two groups of the driving mechanism.

[0017] In an embodiment, the driving mechanism includes a walking assembly, a motor assembly and a cable following assembly, the cable following assembly is used to lift a cable, the cable is connected to the motor assembly, and the motor assembly drives the walking assembly to slide on the hoisting track.

[0018] According to the second aspect of the embodiment of the utility model, a pipe jacking system is provided, which includes a pushing mechanism, a pull rod assembly and a segment hoisting device as described above, the pull rod assembly is distributed on both sides of the pushing mechanism.

[0019] The loop chain hoist assembly on each of the sliding hoisting assemblies alternately hoists the tunnel segment so that the loop chain hoist assembly passes over the pull rod assembly in the moving direction and moves the tunnel segment to an assembling position, which is located in the jacking direction of the jacking mechanism.

[0020] In an embodiment, the two loop chain hoist assemblies on the sliding hoisting assembly are spaced apart by a distance greater than the maximum width distance of the pull rod assembly on one side of the jacking mechanism.

[0021] The technical scheme provided by the embodiment of the utility model can have the following beneficial effects: two groups of sliding hoisting assemblies jointly hoist the tunnel segment, each group of sliding hoisting assemblies is independently controlled, and the front and back moving positions of the tunnel segment can be controlled. At least two loop chain hoist assemblies are arranged in each group of sliding hoisting assemblies, the loop chain hoist assemblies can alternately hoist the tunnel segment and can cross the pull rod assembly, and there is always one loop chain hoist assembly hoisting when the tunnel segment is hoisted to the assembling position, so that the disadvantages of the loop chain hoist assembly obliquely pulling and pressing the pull rod assembly are avoided.

[0022] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the utility model and, together with the specification, serve to explain the principles of the utility model.

[0024] Fig. 1 is a structural schematic view of a pipe jacking system according to an embodiment.

[0025] Fig. 2 is a structural schematic view of a sliding hoisting assembly according to an embodiment.

[0026] Fig. 3 is a lateral structural schematic view of a sliding hoisting assembly according to an embodiment.

[0027] In the drawings, drive mechanism 10; walking assembly 11; motor assembly 12; cable following assembly 13; walking mechanism 20; loop chain hoist assembly 21; rolling frame 211; winch motor 212; winch frame 213; sling member 214; chain 215; connecting rod mechanism 22; connecting rod 221; adapter 222;

[0028] Sliding hoisting assembly 100; hoisting rail 200; tunnel segment 300; jacking mechanism 400; pull rod assembly 500. DETAILED DESCRIPTION

[0029] The accompanying drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the utility model; in order to better illustrate the embodiments of the utility model, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it can be understood that some well-known structures in the drawings and their descriptions can be omitted.

[0030] As shown in Figs. 1 to 3 The utility model provides a segment hoisting device, segment hoisting device slidingly connects in hoisting rail 200, segment hoisting device is used for hoisting tunnel segment 300. Segment hoisting device includes two groups of sliding hoisting assemblies 100 of independent control. Hoisting rail 200 is I-steel beam, and segment hoisting device slides in I-steel beam. At least part I-steel beam is located above the assembly position, and segment hoisting device can hoist tunnel segment 300 to the assembly position along hoisting rail 200.

[0031] Sliding hoisting assembly 100 includes driving mechanism 10 slidingly connected in hoisting rail 200 and travelling mechanism 20, and driving mechanism 10 is connected with travelling mechanism 20 to constitute dismounting connection. Driving mechanism 10 drives travelling mechanism 20 to move, thereby driving travelling mechanism 20 to advance, retreat or stop to stay in different working positions. Driving mechanism 10 and travelling mechanism 20 are assembled and connected to constitute combined structure, which can realize flexible connection driving and conveniently adjust traction direction and interval distance.

[0032] Driving mechanism 10 is connected with and drives travelling mechanism 20 to slide along hoisting rail 200, and travelling mechanism 20 includes at least two ring-chain hoist assemblies 21 arranged at intervals. Each group of ring-chain hoist assemblies 21 can independently hoist, and one of the ring-chain hoist assemblies 21 can hoist one end of tunnel segment 300.

[0033] Two groups of sliding hoisting assemblies 100 jointly hoist tunnel segment 300, and each group of sliding hoisting assemblies 100 hoists and connects tunnel segment 300 through at least one ring-chain hoist assembly 21. Each group of sliding hoisting assemblies 100 is independently controlled, and can control the front and back moving positions of tunnel segment 300. When two groups of sliding hoisting assemblies 100 synchronously move, tunnel segment 300 can be driven to advance at a uniform speed. When two groups of sliding hoisting assemblies 100 move asynchronously, the interval between two groups of sliding hoisting assemblies 100 changes, thereby adjusting the hoisting angle and hoisting force direction of ring-chain hoist assembly 21 to tunnel segment 300, and realizing fine adjustment of the hoisting position.

[0034] It is worth mentioning that the number of the ring chain hoist assemblies 21 provided by the sliding hoisting assembly 100 can be two, three, or four. When the tunnel segment is large, multiple ring chain hoist assemblies 21 can jointly hoist the tunnel segment 300 to improve the safety of construction. In particular, the multiple ring chain hoist assemblies 21 can be adjusted in length to adjust the hoisting posture and angle of the tunnel segment 300, thereby improving the convenience of assembly.

[0035] The length direction of the pull rod assembly 500 is perpendicular to the moving direction of the sliding hoisting assembly 100. Each group of the sliding hoisting assembly 100 is provided with two groups of the ring chain hoist assemblies 21, which can be used to alternately hoist the tunnel segment 300 and can span the pull rod assembly 500. The tunnel segment 300 is always hoisted by one of the ring chain hoist assemblies 21 when hoisted to the assembly position, thereby avoiding the disadvantage of oblique pulling and extrusion of the pull rod assembly 500 by the ring chain hoist assemblies 21.

[0036] The two groups of the ring chain hoist assemblies 21 of the first group of the sliding hoisting assembly 100 are defined as hoisting member 1A and hoisting member 2A, and the two groups of the ring chain hoist assemblies 21 of the second group of the sliding hoisting assembly 100 are defined as hoisting member 1B and hoisting member 2B. The hoisting member 1A and the hoisting member 2B are located on the outer side, and the hoisting member 2A and the hoisting member 1B are located between the hoisting member 1B and the hoisting member 2B.

[0037] The adjustment steps of the walking mechanism 20 across the pull rod assembly 500 are as follows: the walking mechanism 20 moves close to the pull rod assembly 500, the hoisting member 1A is empty, the hoisting member 2A hoists the tunnel segment 300, the hoisting member 1B is empty, and the hoisting member 2B hoists the tunnel segment 300. The sliding hoisting assembly 100 moves while hoisting the tunnel segment 300, the front end of the tunnel segment 300 and the hoisting member 1A pass over the pull rod assembly 500, and the hoisting member 2A approaches the pull rod assembly 500; then, the hoisting member 1A hoists the tunnel segment 300, the hoisting member 2A is separated from the tunnel segment 300, and the tunnel segment 300 continues to move close to the assembly position. Then, the hoisting member 2B approaches the pull rod assembly 500, the hoisting member 1B hoists the tunnel segment 300, and the hoisting member 2B is separated from the tunnel segment 300. Then, the walking mechanism 20 can move the tunnel segment 300 to the assembly position, wherein the two groups of the walking mechanism 20 adjust the interval position and the angle, thereby adjusting the posture of the tunnel segment 300.

[0038] In an embodiment, the walking mechanism 20 further includes a linkage mechanism 22, which connects two adjacent ring chain hoist assemblies 21. The linkage mechanism 22 connects two or more ring chain hoist assemblies 21 in series and can be driven by the same driving mechanism 10, thereby reducing the driving cost and achieving independent operation of each ring chain hoist assembly 21 and consistency of multiple ring chain hoist assemblies 21.

[0039] Preferably, the connecting rod mechanism 22 can connect two adjacent chain hoist assemblies 21. When the number of chain hoist assemblies 21 is set to three or more, they can be quickly connected through the connecting rod mechanism 22, thereby improving the flexibility and convenience of the extended connection of the chain hoist assemblies 21.

[0040] Optionally, the drive mechanism 10 is connected to one of the chain hoist assemblies 21 as an integral unit to form a direct drive structure. For example, the drive mechanism 10 is directly locked and connected to the chain hoist assembly 21 via fasteners to form an integral unit.

[0041] In one embodiment, the drive mechanism 10 is connected to the closest chain hoist assembly 21 via a connecting rod mechanism 22. The connecting rod mechanism 22 connects the drive mechanism 10 and the chain hoist assembly 21, adjusts the distance between the drive mechanism 10 and the chain hoist assembly 21, and realizes push-pull power transmission.

[0042] The connecting rod mechanism 22 can be configured as a straight rod assembly, a curved rod assembly, a transition structure, etc. The connecting rod mechanism 22 realizes a rigid connection support, and the connection position and angle are fixed.

[0043] Preferably, the linkage mechanism 22 includes a connecting rod 221 and an adapter 222 detachably connected to the connecting rod 221. The connecting rod 221 is hingedly connected to the chain hoist assembly 21 or the drive mechanism 10. The connecting rod 221 and the adapter 222 are detachably connected and can be assembled independently or assembled and connected to the drive mechanism 10 or the chain hoist assembly 21.

[0044] Optionally, the connecting rod 221 is hingedly connected to the chain hoist assembly 21 , and the adapter 222 at the other end is hingedly connected to another chain hoist assembly 21 or the driving mechanism 10 .

[0045] Optionally, the adapter 222 is hingedly connected to the chain hoist assembly 21 , and the connecting rod 221 at the other end is hingedly connected to another chain hoist assembly 21 or the driving mechanism 10 .

[0046] like Figs. 1 to 3 As shown, the two ends of the connecting rod mechanism 22 are rotatably connected, which can achieve smooth power transmission, improve assembly convenience, and reduce debugging difficulty. Optionally, the drive mechanism 10 and the chain hoist assembly 21 are both provided with a horizontal connecting shaft, and the adapter 222 and the connecting rod 221 are hingedly connected to the corresponding connecting shaft.

[0047] In one embodiment, the chain hoist assembly 21 includes a rolling frame 211 mounted on the hoisting track 200. The rolling frame 211 is mounted on the hoisting track 200 via rollers or sliders to achieve a rolling or sliding connection. Specifically, the rolling frame 211 is connected to the I-beam.

[0048] The winch frame 213 is installed below the rolling frame 211, and the hoisting cable 214 is wound on the winch frame 213. The winch motor 212 drives the winch frame 213 to rotate back and forth to realize the extension and retraction of the hoisting cable 214, thereby adjusting the lifting height of the tunnel segment 300. Alternatively, the winch motor 212 and the winch frame 213 are arranged side by side and located below the rolling frame 211, reducing the requirement for the activity space above and laterally.

[0049] The connecting rod mechanism 22 is connected to the rolling frame 211, so that the center line of the connecting rod mechanism 22 approaches the hoisting track 200, improving the running stability.

[0050] In an embodiment, the hoisting cable 214 includes a chain 215 and a hook at the end of the chain 215. The chain 215 is connected by a plurality of annular iron rings in sequence, and has high structural strength. The hook is installed at the end of the chain 215 to hook and connect the hoisting belt on the tunnel segment 300, and cooperate with the hoisting operation.

[0051] In an embodiment, the hoisting cable 214 includes a steel wire rope and a locking member at the end of the chain 215. The steel wire rope has high structural strength, and has suitable bending performance and elastic buffering performance, improving the stability of hoisting the tunnel segment 300.

[0052] Alternatively, the locking member adopts a hook, which can hook and connect the hoisting belt on the tunnel segment 300, and cooperate with the hoisting operation.

[0053] Alternatively, the locking member adopts a lifting ring structure, which can directly connect the threaded hole on the tunnel segment 300, reducing the hoisting auxiliary accessories.

[0054] In an embodiment, the driving mechanism 10 includes a walking assembly 11, a motor assembly 12, and a cable following assembly 13. The cable following assembly 13 is used to lift the cable, the cable is connected to the motor assembly 12, and the motor assembly 12 drives the walking assembly 11 to slide on the hoisting track 200. The walking assembly 11 is arranged on the hoisting track 200 and is in rolling connection with the hoisting track 200. The motor assembly 12 drives the driving wheel of the walking assembly 11 to drive the driving mechanism 10 to move forward or backward along the hoisting track 200.

[0055] The cable following assembly 13 is connected to the hoisting track 200 to realize sliding or rolling movement. The walking assembly 11 pushes the cable following assembly 13 to move to realize the folding or unfolding of the cable.

[0056] The two groups of sliding hoisting assemblies 100 cooperate to hoist the tunnel segment 300. Preferably, the two groups of sliding hoisting assemblies 100 are symmetrically arranged, which can balance the stress during hoisting and improve the stability of hoisting.

[0057] Further, the walking mechanism 20 is used as a hoisting part of the hoisting tunnel segment 300, the walking mechanism 20 is located between the two groups of driving mechanisms 10, the hoisting angle adjustment is more convenient, and the interference factor is reduced. The driving mechanism 10 can move in the direction of the outer side channel, and has the functions of traction or pushing, and the driving control is convenient.

[0058] As shown in Figs. 1 to 3 The tunnel segment hoisting device disclosed in the above embodiment is applied to a pipe jacking system, the pipe jacking system comprises a jacking mechanism 400, a pull rod assembly 500 and the tunnel segment hoisting device, and the pull rod assembly 500 is distributed on the two sides of the jacking mechanism 400. The pull rod assembly 500 is provided in two groups, and the two groups of pull rod assemblies 500 are distributed on the two sides of the hole door. The pull rod assembly 500 comprises two sleeve pull rods which are arranged at intervals and are installed at a preset distance along the outer peripheral wall of the sleeve device.

[0059] The ring-chain hoist assemblies 21 on each sliding hoisting assembly 100 alternately hoist the tunnel segment 300, so that the ring-chain hoist assemblies 21 pass through the pull rod assembly 500 in the moving direction and move the tunnel segment 300 to an assembling position, and the assembling position is located in the jacking direction of the jacking mechanism 400.

[0060] The two ring-chain hoist assemblies 21 alternately hoist the tunnel segment 300, so that the tunnel segment 300 always has at least one ring-chain hoist assembly 21 for hoisting, without the need for additional auxiliary support, thereby improving the construction safety and convenience.

[0061] The interval distance between the two ring-chain hoist assemblies 21 on the sliding hoisting assembly 100 is greater than the maximum width distance of the pull rod assembly 500 on one side of the jacking mechanism 400. That is, the interval distance between the two ring-chain hoist assemblies 21 is greater than the interval distance between the two sleeve pull rods. The two ring-chain hoist assemblies 21 can be distributed on the two sides of the pull rod assembly 500 in a vertical state, and the chain 215 in the vertical state will not be inclined to press the two sleeve pull rods, thereby reducing the risk of the pull rod assembly 500 being pressed by the ring-chain hoist assembly 21.

[0062] It should be understood that the present application is not limited to the precise construction which has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the claims that follow.

Claims

1. A segment hoisting device, slidably connected to a hoisting track, for hoisting tunnel segments, characterized in that: The segment hoisting device includes two sets of independently controlled sliding hoisting assemblies; The sliding hoisting assembly includes a driving mechanism and a traveling mechanism slidably connected to the hoisting track, the driving mechanism is connected to and drives the traveling mechanism to slide along the hoisting track, and the traveling mechanism includes at least two chain hoist assemblies arranged at intervals; The two groups of sliding hoisting assemblies hoist the tunnel segments together, and each group of sliding hoisting assemblies hoists and connects the tunnel segments through at least one chain hoist assembly.

2. The segment hoisting device according to claim 1, characterized in that: The traveling mechanism further includes a connecting rod mechanism, and the connecting rod mechanism connects two adjacent chain hoist assemblies; and / or the driving mechanism is connected to the closest chain hoist assembly through the connecting rod mechanism.

3. The segment hoisting device according to claim 2, characterized in that: The connecting rod mechanism includes a connecting rod and a connecting piece detachably connected to the connecting rod, and the connecting rod is hingedly connected to the chain hoist assembly or the driving mechanism.

4. The segment hoisting device according to claim 2, characterized in that: The chain hoist assembly includes a rolling frame mounted on the hoisting track, a winch frame and a winch motor installed on the rolling frame, and a sling installed on the winch frame. The connecting rod mechanism is connected to the rolling frame.

5. The segment hoisting device according to claim 4, characterized in that: The sling comprises a chain and a hook at the end of the chain; or, The sling member includes a steel wire rope and a locking member located at the end of the chain.

6. The segment hoisting device according to claim 1, characterized in that: The two groups of sliding hoisting components are symmetrically arranged.

7. The segment hoisting device according to claim 6, characterized in that: The walking mechanism is located between the two groups of driving mechanisms.

8. The segment hoisting device according to claim 1, characterized in that: The driving mechanism includes a walking assembly, a motor assembly and a cable accompanying assembly. The cable accompanying assembly is used to lift the cable. The cable is connected to the motor assembly. The motor assembly drives the walking assembly to slide on the lifting track.

9. A pipe jacking system, characterized in that: It comprises a pushing mechanism, a tie rod assembly and the segment hoisting device according to any one of claims 1 to 8, wherein the tie rod assembly is distributed on both sides of the pushing mechanism; The chain hoist assembly on each sliding lifting assembly alternately lifts the tunnel segment so that the chain hoist assembly passes over the pull rod assembly in the moving direction and moves the tunnel segment to the assembly position, which is located in the pushing direction of the pushing mechanism.

10. The pipe jacking system according to claim 9, characterized in that The distance between the two chain hoist assemblies on the sliding hoisting assembly is greater than the maximum width distance of the pull rod assembly located on one side of the pushing mechanism.

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