Steel penstock traceless hoisting device

Abstract

The utility model relates to the technical field of penstock hoisting tools, and particularly discloses a penstock traceless hoisting device which comprises a first clamp, the first clamp comprises a hoisting part, a connecting part and a supporting part, the hoisting part is located above the supporting part, and one end of the hoisting part in the horizontal direction is connected with one end of the supporting part in the horizontal direction through the connecting part; a hoisting hole is formed in the other end of the hoisting part; a bayonet is formed between the hoisting part and the supporting part, and the pressure steel pipe is clamped in the bayonet; stabilizing assemblies are arranged on the front side and the rear side of the first clamp correspondingly, and one ends of the stabilizing assemblies on the front side and the rear side abut against the surface of the pressure steel pipe; the device further comprises a second clamp which is the same as the first clamp in structure, and the second clamp and the first clamp are symmetrically arranged. The second clamp and the first clamp are clamped to the left side and the right side of the semicircular tile respectively. The device is used for preventing the appearance and the quality from being influenced by tooth marks generated by hoisting the semicircular tiles in the pressure steel pipe manufacturing process.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting tools for penstocks, and particularly relates to a scarless hoisting device for penstocks. Background Art

[0002] A penstock is a steel pipeline used to convey water flow with extremely high water pressure. The manufacturing process of large-diameter penstocks used in hydropower stations is basically as follows: steel plates are rolled into semi-circular tiles by a plate rolling machine, and then 2-3 semi-circular tiles are spliced into a penstock on a circular splicing platform. At present, in the production of penstocks, various vertical hooks are generally used to engage with the semi-circular tiles, and then cooperate with a hoisting tool for hoisting. However, due to the large weight of the semi-circular tiles and the large pressure generated at the engagement between the vertical hooks and the semi-circular tiles, the engagement part of the semi-circular tiles is extremely prone to generate nicks, which will seriously affect the appearance and quality of the penstock. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a scarless hoisting device for penstocks, so as to avoid the nicks generated during the hoisting of semi-circular tiles in the production process of penstocks from affecting the appearance and quality.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A scarless hoisting device for penstocks includes a first fixture. The first fixture includes a hoisting part, a connecting part and a supporting part. The hoisting part is located above the supporting part. One end of the hoisting part in the horizontal direction is connected to one end of the supporting part in the horizontal direction through the connecting part. A hoisting hole is arranged at the other end of the hoisting part; a clamping opening is formed between the hoisting part and the supporting part, and the penstock is clamped in the clamping opening; stabilizing components are respectively arranged on the front side and the rear side of the first fixture, and one ends of the stabilizing components on the front side and the rear side are both abutted against the surface of the penstock; the device further includes a second fixture which has the same structure as the first fixture and is symmetrically arranged with the first fixture; the second fixture and the first fixture are respectively clamped on the left and right sides of the semi-circular tile.

[0006] Preferably, the stabilizing component is a fastening bolt. Threaded seats are arranged on the front and rear sides of the hoisting parts of the first fixture and the second fixture, and the fastening bolt passes through the threaded seat and is in threaded connection with the threaded seat; the head of the fastening bolt is abutted against the surface of the penstock.

[0007] Further, two threaded seats are arranged on the front side of the hoisting parts of the first fixture and the second fixture, and the two threaded seats are respectively close to the connecting part and the hoisting hole; two threaded seats are arranged on the rear side of the hoisting parts of the first fixture and the second fixture, and the two threaded seats are respectively close to the connecting part and the hoisting hole.

[0008] Preferably, the distance from the hoisting hole to the connecting part is greater than the distance from the end of the supporting part to the connecting part.

[0009] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0010] The first fixture and the second fixture respectively clamp their respective bayonets on both sides of the upper end of the semi-circular tile. The lifting part of the first fixture is located on the upper surface of the semi-circular tile, and the supporting part of the first fixture is located on the lower surface of the semi-circular tile. When hoisting the semi-circular tile by connecting the steel wire rope through the hoisting hole, the stress point of the steel wire rope is inside the semi-circular tile. During the hoisting process, the end of the hoisting hole of the hoisting part tilts slightly upwards, making the clamping of the first fixture stable. Fixing the semi-circular tile by means of clamping can avoid the problem of gnawing marks caused by excessive pressure at the hoisting part of the semi-circular tile, and further avoid the appearance and quality problems of the semi-circular tile caused by the gnawing marks. Description of the Drawings

[0011] Figure 1 It is the front view of the utility model.

[0012] Figure 2 It is the side view of the utility model.

[0013] The meanings of the reference numerals in the figure are: 1 - the first fixture, 11 - the hoisting part, 12 - the connecting part, 13 - the supporting part, 14 - the hoisting hole, 2 - the threaded seat, 3 - the fastening bolt, 4 - the semi-circular tile. Detailed Embodiment

[0014] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model, so as to have a further understanding of the concept, the technical problems solved, the technical features constituting the technical solutions, and the technical effects brought by the utility model.

[0015] As Figure 1 、 Figure 2 shown, a seamless hoisting device for a penstock includes a first fixture 1. The first fixture 1 includes a hoisting part 11, a connecting part 12 and a supporting part 13. The hoisting part 11 is located above the supporting part 13. One end of the hoisting part 11 in the horizontal direction is connected to one end of the supporting part 13 in the horizontal direction through the connecting part 12. A hoisting hole 14 is provided at the other end of the hoisting part 11; a bayonet is formed between the hoisting part 11 and the supporting part 13, and the penstock is clamped in the bayonet; stabilizing components are respectively arranged on the front side and the rear side of the first fixture 1, and one end of each of the stabilizing components on the front side and the rear side abuts against the surface of the penstock; a second fixture is further included, and the second fixture has the same structure as the first fixture 1, and the second fixture and the first fixture 1 are symmetrically arranged; the second fixture and the first fixture 1 are respectively clamped on the left and right sides of the semi-circular tile 4.

[0016] The manufacturing process of the penstock is as follows: The steel plate is rolled into a semi-circular tile 4 by a plate rolling machine, and then 2-3 semi-circular tiles 4 are spliced into a penstock on a circular splicing platform. After the semi-circular tile 4 is manufactured, it needs to be hoisted first and hoisted to the working location of the splicing process for splicing. At present, during the hoisting process, after various vertical hooks are engaged with the semi-circular tile 4, they are hoisted in cooperation with a lifting tool. The existing problem is that the semi-circular tile 4 is heavy. When using the method of engaging the vertical hook with the semi-circular tile 4 for hoisting, the engaging part of the semi-circular tile 4 is extremely prone to generate nicks, which will seriously affect the appearance and quality of the penstock.

[0017] The improvement of the present utility model lies in that: The first fixture 1 and the second fixture respectively clamp their respective bayonets on both sides of the upper end of the semi-circular tile 4. The hoisting part 11 of the first fixture 1 is located on the upper surface of the semi-circular tile 4, and the supporting part 13 of the first fixture 1 is located on the lower surface of the semi-circular tile 4. When hoisting the semi-circular tile 4 by connecting a steel wire rope through the hoisting hole 14, the stress point of the steel wire rope is inside the semi-circular tile 4. During the hoisting process, the end of the hoisting hole 14 of the hoisting part 11 tilts slightly upwards, making the clamping of the first fixture 1 stable. The traditional vertical hook fixes the semi-circular tile 4 in a meshing manner and needs to be completely clamped before hoisting, which is easy to form nicks. The present utility model fixes the semi-circular tile 4 by clamping the first fixture 1 and the second fixture at both ends. Using the clamping method to fix the semi-circular tile 4 can avoid excessive pressure at the hoisting part of the semi-circular tile 4, and no nicks will be generated during the hoisting process. The stability during the hoisting process is ensured by the upward tilting and clamping of the inner ends of the first fixture 1 and the second fixture during the hoisting process. One end of the stable components on the front side and the rear side are both abutted against the surface of the penstock, avoiding the deflection and sliding of the semi-circular tile 4 during the hoisting process.

[0018] Preferably, the stable component is a fastening bolt 3. Threaded seats 2 are arranged on the front and rear sides of the hoisting parts 11 of the first fixture 1 and the second fixture. The fastening bolt 3 passes through the threaded seat 2 and is threadedly connected to the threaded seat 2; the head of the fastening bolt 3 abuts against the surface of the penstock. The fastening bolt 3 is connected to the threaded seat 2, and the height of the fastening bolt 3 can be adjusted, so that when the present utility model fixes different semi-circular tiles 4 or fixes at different positions of the semi-circular tile 4, a better fixing effect can be achieved by adjusting the height of the fastening bolt 3.

[0019] Furthermore, two threaded seats 2 are provided on the front sides of the hoisting parts 11 of the first fixture 1 and the second fixture. The two threaded seats 2 are respectively close to the connecting part 12 and the hoisting hole 14. Two threaded seats 2 are provided on the rear sides of the hoisting parts 11 of the first fixture 1 and the second fixture. The two threaded seats 2 are respectively close to the connecting part 12 and the hoisting hole 14. Two threaded seats 2 are provided on both the front side and the rear side of the first fixture 1. That is, four fixing bolts are respectively provided on the first fixture 1 and the second fixture to fix the semi-circular tile 4. Two fixing bolts are close to the connecting part 12, and two fixing bolts are close to the hoisting hole 14, so that the fixing bolts have more restrictions on the semi-circular tile 4 and the hoisting process is more stable.

[0020] Preferably, the distance from the hoisting hole 14 to the connecting part 12 is greater than the distance from the end of the supporting part 13 to the connecting part 12. The relatively large distance from the hoisting hole 14 to the connecting part 12 makes the hoisting position of the steel wire rope closer to the inside, and the two connecting points of the hoisted steel wire ropes are closer, so the probability of shaking during the hoisting process is smaller. While the distance from the end of the supporting part 13 to the connecting part 12 is smaller, and the supporting part 13 is not likely to be deformed.

[0021] In the description of the present invention, the terms "connection" and "fixation" may be fixed connection, machining, welding, or mechanical connection. The specific meanings of the above terms in the present invention should be understood according to the specific circumstances.

[0022] In the description of the present invention, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship 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. Therefore, it should not be construed as a limitation to the present invention.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. And 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 present invention.

Claims

1. A seamless lifting device for a pressure steel pipe, characterized in that: The first clamp (1) comprises a hoisting portion (11), a connecting portion (12) and a supporting portion (13), wherein the hoisting portion (11) is located above the supporting portion (13), one end of the hoisting portion (11) in the horizontal direction is connected to one end of the supporting portion (13) in the horizontal direction via the connecting portion (12), and the other end of the hoisting portion (11) is provided with a hoisting hole (14); a bayonet is provided between the hoisting portion (11) and the supporting portion (13), and the pressure steel pipe is bayoneted in the bayonet; a stabilizing component is provided on the front side and the rear side of the first clamp (1), respectively, and one end of the stabilizing component on the front side and the rear side is both in contact with the surface of the semicircular tile (4); The second clamp also comprises a second clamp having the same structure as the first clamp (1), and the second clamp and the first clamp (1) are symmetrically arranged; the second clamp and the first clamp (1) are respectively clamped on the left and right sides of the pressure steel pipe.

2. A seamless lifting device for a pressure steel pipe according to claim 1, characterized in that: The stabilizing component is a fastening bolt (3), and threaded seats (2) are provided on the front and rear sides of the hoisting parts (11) of the first clamp (1) and the second clamp, and the fastening bolt (3) passes through the threaded seat (2) and is threadedly connected to the threaded seat (2); The head of the fastening bolt (3) abuts against the surface of the pressure steel pipe.

3. A seamless lifting device for a pressure steel pipe according to claim 2, characterized in that: Two threaded seats (2) are arranged on the front sides of the lifting parts (11) of the first clamp (1) and the second clamp, and the two threaded seats (2) are respectively close to the connecting part (12) and the lifting hole (14); two threaded seats (2) are arranged on the rear sides of the lifting parts (11) of the first clamp (1) and the second clamp, and the two threaded seats (2) are respectively close to the connecting part (12) and the lifting hole (14).

4. The seamless lifting device for pressure steel pipe according to claim 1 is characterized in that: The distance between the hoisting hole (14) and the connecting portion (12) is greater than the distance between the end of the supporting portion (13) and the connecting portion (12).

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