Large-diameter pressure steel pipe portal crane turning-over hoisting auxiliary device

Abstract

The utility model discloses a turnover hoisting auxiliary device for a large-diameter pressure steel pipe portal crane. A first electric hoist and a second electric hoist which can slide transversely are arranged on the portal crane; hanging lugs are arranged on pipe openings in the upper side and the lower side of the large-diameter pressure steel pipe; the first electric hoist is connected to the first lifting hook, and the first lifting hook is connected to the self-locking hook through a steel wire rope and connected to a hanging lug of a lower pipe opening of the large-diameter pressure steel pipe through the self-locking hook. The second electric hoist is connected to a second lifting hook, a lifting appliance is hung at the bottom of the second lifting hook and provided with a steel chain used for bundling and hanging the large-diameter pressure steel pipe, and the two ends of the steel chain bypass the rolling wheel and the large-diameter pressure steel pipe respectively to form a closed steel chain. According to the device, stable and complete turning-over procedures of the large-diameter pressure steel pipe can be achieved, meanwhile, the self-locking hook is matched with the steel chain for hoisting and turning over, the technical difficulty of field execution is low, disassembly is convenient, and rapid hoisting and turning-over of the large-diameter pressure steel pipe can be effectively accelerated.

Description

Technical Field

[0001] The utility model relates to the field of large-diameter pressure steel pipe construction, in particular to a large-diameter pressure steel pipe gantry crane turning over and hoisting auxiliary device. Background Art

[0002] When large-diameter pressure steel pipes are traditionally manufactured in a tunnel, the tile installation method requires the main tunnel to be expanded in advance, a circular platform to be built in the tunnel, sky anchors and trolleys to assist in lifting and turning, and the single section to be installed and transported to its place; after the installation of the steel pipe is completed, the platform and trolley are removed, and then the expanded excavation position is backfilled with concrete. In the prior art, the construction height of the large-diameter pressure steel pipe production workshop is usually limited due to the low position of the high-altitude power cables above the temporary construction site of the large-diameter pressure steel pipe production workshop, which in turn limits the height that can be selected for the gantry crane, a key lifting equipment used in the entire production process in the workshop.

[0003] After completing the single-side circumferential welding of the T-shaped fillet weld between the stiffening ring and the pipe wall of the large-diameter pressure steel pipe, the only way is to hang the traditional steel plate clips on the two gantry crane electric hoist hooks, hang the steel plate clips on both sides of the large-diameter pressure steel pipe, and then use the lifting of the gantry crane electric hoist to turn over the large-diameter pressure steel pipe as a whole. However, in this process, there are problems such as unstable hanging of the steel plate clips, inconvenient operation of hanging plate clips, slow hoisting speed using plate clips, and long time consumption, which greatly affects the construction efficiency.

[0004] Therefore, a turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane is proposed to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is that in the existing turning-over and hoisting process of large-diameter pressure steel pipes, the large-diameter pressure steel pipes are usually turned over as a whole by utilizing the lifting of the gantry crane electric hoist in conjunction with traditional steel plate clips, which has the problems of unstable hanging of the steel plate clips, inconvenient hanging plate operation and slow hoisting speed.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane, wherein the gantry crane is provided with a first electric hoist and a second electric hoist that can slide laterally; hanging ears are provided on the upper and lower sides of the large-diameter pressure steel pipe;

[0007] The first electric hoist is connected to a first hook, and the first hook is connected to a self-locking hook through a steel wire rope that passes through the large-diameter pressure steel pipe from the inside, and is connected to a hanging ear at the lower pipe opening of the large-diameter pressure steel pipe through the self-locking hook;

[0008] The second electric hoist is connected to the second hook, and a sling is hung at the bottom of the second hook, the sling includes two parallel ear plates, and a hook cross bar horizontally passing through the two ear plates, a limit block is provided at one end of the hook cross bar, and a pin hole is provided at the other end, a threaded pin is provided in the pin hole, and the threaded pin passes through the hook cross bar through the pin hole and is locked by a pin nut; it also includes a roller shaft located below the hook cross bar and horizontally passing through the two ear plates, threaded sections are provided at both ends of the roller shaft, and are locked by roller nuts; a rolling wheel is also sleeved on the roller shaft; it also includes a welded reinforcement plate arranged between the two ear plates and located below the hook cross bar; a steel chain for tying and hanging large-diameter pressure steel pipes is sleeved on the rolling wheel, and the two ends of the steel chain respectively pass around the roller and the large-diameter pressure steel pipe to form a closed steel chain.

[0009] Particularly, a plurality of the hanging ears are evenly distributed along the circumferential direction on the upper and lower pipe openings of the large-diameter pressure steel pipe.

[0010] Particularly, both ends of the hook cross bar and the roller shaft are sleeved with welding back plates, and the welding back plates are tightly attached to the ear plates from the outside.

[0011] In particular, it also includes a placement trolley arranged below the large-diameter pressure steel pipe, and the placement trolley is provided with a placement arc groove for placing the large-diameter pressure steel pipe in an upright state.

[0012] Furthermore, two rotating rollers for placing large-diameter pressure steel pipes in an upright state are provided at the bottom of the arc groove.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model device can realize the stable and complete turning process of large-diameter pressure steel pipes, and at the same time use self-locking hooks and steel chains to lift and turn over. The technical difficulty of on-site execution is low and the disassembly is convenient. It can effectively speed up the rapid lifting and turning over of large-diameter pressure steel pipes, effectively speed up the construction efficiency, and avoid affecting adjacent workstations. It effectively improves the overall manufacturing efficiency of large-diameter pressure steel pipes, thereby shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the device of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the sling device of the utility model.

[0016] Figure 3 This is a schematic diagram of placing the trolley and the arc trough structure.

[0017] The meanings of the numbers in the figure are: gantry crane—1; first electric hoist—2; second electric hoist—3; hanging ear—4; first hook—51; second hook—52; wire rope—6; large diameter pressure steel pipe—7; ear plate—8; hook cross bar—9; threaded pin—11; pin nut—12; roller shaft—13; roller nut—14; rolling wheel—15; welding reinforcement plate—16; steel chain—17; welding back plate—18; placing arc groove—19; rotating roller—20. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0019] like Figure 1 As shown, a turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane comprises a gantry crane 1, on which a first electric hoist 2 and a second electric hoist 3 capable of sliding laterally are provided; and hanging ears 4 are provided on both upper and lower pipe openings of a large-diameter pressure steel pipe 7;

[0020] The first electric hoist 2 is connected to the first hook 51, and the first hook 51 is connected to the self-locking hook through the steel wire rope 6 that passes through the large-diameter pressure steel pipe 7 from the inside, and is connected to the hanging ear 4 at the lower pipe mouth of the large-diameter pressure steel pipe 7 through the self-locking hook;

[0021] The second electric hoist 3 is connected to the second hook 52, and a lifting device is hung at the bottom of the second hook 52, such as Figure 2 As shown, the sling includes two parallel ear plates 8, and also includes a hook cross bar 9 that horizontally penetrates the two ear plates 8, a limit block is provided at one end of the hook cross bar 9, and a pin hole is provided at the other end, a threaded pin 11 is provided in the pin hole, and the threaded pin 11 penetrates the hook cross bar 9 through the pin hole and is locked by a pin nut 12; it also includes a roller shaft 13 located below the hook cross bar 9 and horizontally penetrates the two ear plates 8, both ends of the roller shaft 13 are provided with threaded sections, and are locked by roller nuts 14; a rolling wheel 15 is also sleeved on the roller shaft 13; it also includes a welded reinforcement plate 16 arranged between the two ear plates 8 and located below the hook cross bar 9; the rolling wheel 15 is sleeved with a steel chain 17 for tying and hanging a large-diameter pressure steel pipe 7, and the two ends of the steel chain 17 respectively pass around the roller and the large-diameter pressure steel pipe 7 to form a closed steel chain.

[0022] The working process of the device of the utility model is as follows: after the large-diameter pressure steel pipe 7 stiffening ring is assembled, the large-diameter pressure steel pipe 7 with the stiffening ring assembled will be immediately hoisted to the stiffening ring annular seam welding tooling platform for single-sided annular seam welding of the stiffening ring and the outer wall of the steel pipe T-shaped corner weld. After the single-sided annular seam welding is completed, the steel wire rope 6 on the first hook 51 connected to the bottom of the first electric hoist 2 passes through the horizontally placed large-diameter pressure steel pipe 7, and the self-locking hook at the end of the steel wire rope is used to connect it from the inside of the large-diameter pressure steel pipe 7 to the hanging ear 4 of the lower side pipe mouth of the large-diameter pressure steel pipe 7 and lock it to complete the fixation of one side.

[0023] Then, the second hook 52 is placed into the ear plate 8 with the welded reinforcing plate 16, and the hook cross bar 9 penetrating the ear plate 8 is inserted into the hook of the second hook 52. The stopper at one end of the hook cross bar 9 is pressed against the outer wall of the ear plate 8 from the outer side of the ear plate 8, and the other end is inserted into the pin hole by inserting the threaded pin 11, and then the pin nut 12 is screwed into the end of the threaded pin 11, so that the second hook 52 is locked between the hook cross bar 9 and the welded reinforcing plate 16. Then, the steel chain 17 is wound around the rolling wheel 15, and the other end of the steel chain 17 is passed around the side of the large-diameter pressure steel pipe 7 opposite to the steel wire rope 6, so as to complete the preparation work of the overall lifting. Then start the first electric hoist 2, lift the first hook 51 upward, use the wire rope and the self-locking hook to lift one end of the large diameter pressure steel pipe 7, and at the same time keep the second electric hoist 3 and the second hook 52 at the bottom of the second electric hoist 3 stationary, so that the large diameter pressure steel pipe 7 is continuously lifted, until the large diameter pressure steel pipe 7 is erected, the large diameter pressure steel pipe is placed on the ground or on the placement table below, and then the connection positions of the first hook 51 and the second hook 52 and the attached accessories are exchanged, so as to continue to flip the large diameter pressure steel pipe 7 until the 180° flip of the large diameter pressure steel pipe 7 is completed. The whole process is completed inside the gantry crane 1, which can effectively avoid affecting the adjacent workstations, effectively improve the overall manufacturing efficiency of the large diameter pressure steel pipe, and thus shorten the construction period.

[0024] As a preferred embodiment, a plurality of the hanging ears 4 are evenly distributed along the circumferential direction on the upper and lower pipe openings of the large-diameter pressure steel pipe 7 .

[0025] In this embodiment, by evenly arranging a plurality of hanging ears 4 along the circumferential direction on the upper and lower side pipe openings of the large-diameter pressure steel pipe 7, the initial hanging of the self-locking hook is effectively facilitated, thereby avoiding the need to rotate the large-diameter pressure steel pipe 7 or the problem of excessive rotation of the large-diameter pressure steel pipe 7 after lifting.

[0026] As a preferred embodiment, both ends of the hook cross bar 9 and the roller shaft 13 are also sleeved with welding back plates 18, and the welding back plates 18 are tightly attached to the ear plates 8 from the outside.

[0027] In this embodiment, the role of the welding back plate 18 is to strengthen the strength of the ear plate 4 to prevent the ear plate 4 from bending or deforming due to excessive force, thereby extending the service life of the device.

[0028] As a preferred embodiment, it also includes a movable placement trolley, on which is provided a placement arc groove 19 for placing the large-diameter pressure steel pipe 7 in an upright state.

[0029] In this embodiment, if Figure 3 As shown, an embodiment of a placement table for supporting the large diameter pressure steel pipe 7 after the large diameter pressure steel pipe 7 is flipped to an upright state is provided. The placement trolley can move within the range of the gantry crane 1 along the moving direction of the gantry crane 1. The placement trolley is moved away during the lifting and flipping process. When it is necessary to place and adjust the hanging position, it is driven to the bottom of the first electric hoist 2 and the second electric hoist 3. The purpose of placing the large diameter pressure steel pipe 7 and preventing the pressure steel pipe from rolling is achieved by placing the arc groove 19.

[0030] As a further embodiment, two rotating rollers 20 for placing the large-diameter pressure steel pipe 7 in an upright state are provided at the bottom of the arc placement groove 19.

[0031] In this embodiment, a rotating roller 20 is provided at the bottom of the arc groove 19, and the rotating roller 20 is used as a load-bearing member of the large-diameter pressure steel pipe 7, so that the large-diameter pressure steel pipe 7 is vacated, which is convenient for bundling and hanging the steel chain 17. At the same time, the large-diameter pressure steel pipe 7 can be quickly rotated by the rotating roller 20, which is convenient for quickly aligning the hanging position.

[0032] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0033] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane, comprising a gantry crane (1), characterized in that: The gantry crane (1) is provided with a first electric hoist (2) and a second electric hoist (3) capable of sliding laterally; the large-diameter pressure steel pipe (7) is provided with hanging ears (4) on both upper and lower pipe openings; The first electric hoist (2) is connected to a first lifting hook (51), and the first lifting hook (51) is connected to a self-locking hook via a steel wire rope (6) that passes through the large-diameter pressure steel pipe (7) from the inside, and is connected to a hanging ear (4) at the lower pipe opening of the large-diameter pressure steel pipe (7) via the self-locking hook; The second electric hoist (3) is connected to the second hook (52), and a sling is hung at the bottom of the second hook (52), the sling comprising two parallel ear plates (8), and a hook cross bar (9) horizontally penetrating the two ear plates (8), a limit block is provided at one end of the hook cross bar (9), and a pin hole is provided at the other end, a threaded pin (11) is provided in the pin hole, and the threaded pin (11) passes through the hook cross bar (9) through the pin hole and is locked by a pin nut (12); and further comprising a sling located below the hook cross bar (9) and A roller shaft (13) horizontally passes through the two ear plates (8), and both ends of the roller shaft (13) are provided with threaded sections and are locked by roller nuts (14); a rolling wheel (15) is also sleeved on the roller shaft (13); and a welded reinforcement plate (16) is also provided between the two ear plates (8) and below the hook cross bar (9); a steel chain (17) for tying and hanging a large-diameter pressure steel pipe (7) is sleeved on the rolling wheel (15), and the two ends of the steel chain (17) are respectively passed around the roller and the large-diameter pressure steel pipe (7) to form a closed steel chain.

2. The turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane according to claim 1, characterized in that: A plurality of the hanging ears (4) are evenly distributed along the circumferential direction on the upper and lower pipe openings of the large-diameter pressure steel pipe (7).

3. The turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane according to claim 1, characterized in that: Both ends of the hook crossbar (9) and the roller shaft (13) are also sleeved with welding back plates (18), and the welding back plates (18) are tightly attached to the ear plates (8) from the outside.

4. The turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane according to claim 1, characterized in that: It also includes a movable placement trolley, on which a placement arc groove (19) is provided for placing a large-diameter pressure steel pipe (7) in an upright state.

5. The turning and hoisting auxiliary device for a large-diameter pressure steel pipe gantry crane according to claim 4, characterized in that: Two rotating rollers (20) for placing a large-diameter pressure steel pipe (7) in an upright state are provided at the bottom of the placement arc groove (19).

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