Hoisting structure for preventing valve rod from bending

Abstract

The utility model relates to the technical field of hoisting structures, in particular to a hoisting structure for preventing a valve rod from bending, a supporting cylinder part is movably arranged at the top end of a base part and used for supporting the middle part of the valve rod, and a top supporting part is arranged at the top end of the supporting cylinder part in a sliding manner and used for supporting and protecting the top end of the valve rod; the supporting cylinder part is rotated upwards to increase the distance between the supporting cylinder part and the base part, and the jacking and supporting part is pulled upwards to increase the distance between the jacking and supporting part and the supporting cylinder part, so that the height of the hoisting structure is increased, and a long valve rod can be supported and protected; the top supporting part is pressed on the top of the supporting cylinder part, the supporting cylinder part is pressed on the top of the base part, the height of the hoisting structure is shortened, and a short valve rod can be supported and protected; and the valve rod is prevented from being bent or damaged due to instability or collision in the hoisting process.

Description

Technical Field

[0001] This utility model relates to the field of hoisting structure technology, and in particular to a hoisting structure for preventing valve stem bending. Background Technology

[0002] The valve stems of large valves such as sluice gate valves need to be placed on a special hoisting structure for hoisting and transportation during storage or installation to prevent them from bending.

[0003] Chinese patent application number CN202120874438.8 discloses a valve stem hoisting tool. The valve stem is inserted into the truncated cone at the top of the support column, and then a first cylindrical tube is screwed onto the truncated cone, thereby fixing the valve stem in the bearing component and the hoisting component. The valve stem is hoisted by moving the hoisting component.

[0004] However, the hoisting component and the load-bearing component are only connected by the frustum and the first cylindrical tube, which has few support points and is prone to lateral bending. In addition, the length of the first cylindrical tube is fixed. When hoisting a long valve stem, the top of the valve stem extends out of the first cylindrical tube without support. During the hoisting process, it is easy to bend or be damaged due to instability or collision. Utility Model Content

[0005] The main purpose of this utility model is to provide a hoisting structure that prevents valve stem bending, so as to solve the problem in the related technology that the valve stem top is not supported and is prone to bending due to instability during hoisting.

[0006] To achieve the above objectives, according to one aspect of the present invention, a lifting structure for preventing valve stem bending is provided, comprising: a base portion, the base portion being used to support the support cylinder portion and the top support portion, and to support the bottom end of the valve stem;

[0007] The support cylinder is movably disposed at the top of the base portion and is used to support the middle part of the valve stem.

[0008] The top support is slidably disposed at the top of the support cylinder and is used to support and protect the top of the valve stem. When the valve stem is long, the top support or the support cylinder can be pulled up or both can be pulled up at the same time to increase the height of the hoisting structure.

[0009] Furthermore, the base portion includes a disc assembly and a base cylinder assembly. The disc assembly includes a base plate, a top plate, and several support rods. The base cylinder assembly includes a base cylinder, a limiting ring, and a support ring.

[0010] Furthermore, the top plate is fixedly mounted on the base cylinder, the base cylinder is fixedly mounted on the upper surface of the chassis and is fixedly connected to the top plate, the support ring is sleeved on the outer ring of the base cylinder and is threadedly connected to the base cylinder, and the limiting ring is threadedly connected to the top of the outer ring of the base cylinder.

[0011] Furthermore, the support cylinder includes a support cylinder assembly and a limiting assembly. The support cylinder assembly includes a support cylinder, a connecting ring, and two side lugs. The limiting assembly includes several guide grooves and several guide posts.

[0012] Furthermore, the connecting ring is fixedly disposed at the bottom end of the outer ring of the support cylinder, the guide posts are all fixedly disposed at the bottom end of the connecting ring, the guide posts are fixed to the limiting ring, the guide grooves are all disposed on the outer ring of the support cylinder, and the side ears are respectively fixedly disposed on both sides of the outer wall of the top end of the support cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects: rotating the support cylinder upward increases the distance between the support cylinder and the base, and pulling the top support upward increases the distance between the top support and the support cylinder, thereby increasing the height of the hoisting structure, which can support and protect longer valve stems; pressing the top support on the top of the support cylinder and the support cylinder on the top of the base shortens the height of the hoisting structure, which can support and protect shorter valve stems; and preventing the valve stem from bending or being damaged due to instability or collision during hoisting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the retracted state of this utility model;

[0015] Figure 2 This is a schematic diagram of the present invention in a stretched state.

[0016] Illustration:

[0017] 1. Base section; 11. Chassis; 12. Top plate; 13. Support rod; 14. Base tube; 15. Limiting ring; 16. Support ring;

[0018] 2. Support cylinder; 21. Support cylinder; 22. Guide groove; 23. Connecting ring; 24. Guide post; 25. Side lug;

[0019] 3. Top support; 31. Bottom ring; 32. Slide rod; 33. Threaded hole. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Please see Figures 1 to 2 This embodiment provides a lifting structure to prevent valve stem bending, including: a base part 1, which is used to support the support cylinder part 2 and the top support part 3, and to support the bottom end of the valve stem;

[0022] Support cylinder 2 is movably disposed at the top of base 1 and is used to support the middle part of valve stem;

[0023] The top support 3 is slidably disposed at the top of the support cylinder 2 and is used to support and protect the top of the valve stem. When the valve stem is long, the top support 3 or the support cylinder 2 can be pulled up or both can be pulled up at the same time to increase the height of the hoisting structure.

[0024] The base part 1 includes a disc assembly and a base cylinder assembly. The disc assembly includes a base plate 11, a top plate 12 and several support rods 13. The base cylinder assembly includes a base cylinder 14, a limiting ring 15 and a support ring 16.

[0025] The top plate 12 is fixedly mounted on the base cylinder 14, which is fixedly mounted on the upper surface of the base plate 11. The support ring 16 is sleeved on the outer ring of the base cylinder 14 and threadedly connected to the base cylinder 14. The limiting ring 15 is threadedly connected to the top of the outer ring of the base cylinder 14. The diameter of the top plate 12 is smaller than that of the base plate 11. The support rod 13 is inclined and supports the top plate 12 from different angles, increasing the stability of the base part 1. The inner wall of the base cylinder 14 is provided with a thread that matches the valve stem. After the valve stem is screwed into the base cylinder 14, the bottom of the valve stem is fixed inside the base cylinder 14.

[0026] The support cylinder 2 includes a support cylinder assembly and a limiting assembly. The support cylinder assembly includes a support cylinder 21, a connecting ring 23, and two side lugs 25. The limiting assembly includes several guide grooves 22 and several guide posts 24. The top of the side lugs 25 is provided with a through hole. After the rope passes through the through hole, the transfer valve stem can be hoisted by lifting the rope.

[0027] The connecting ring 23 is fixedly installed at the bottom of the outer ring of the support cylinder 21. The guide post 24 is fixedly installed at the bottom of the connecting ring 23. The guide post 24 is fixed with the limiting ring 15. The guide groove 22 is installed on the outer ring of the support cylinder 21. The side ears 25 are fixedly installed on both sides of the top outer wall of the support cylinder 21.

[0028] The inner wall of the support cylinder 21 is smooth, which facilitates the passage of the valve stem and provides support and protection for the middle part of the valve stem.

[0029] The top support 3 includes a bottom ring 31 and several sliding rods 32. The sliding rods 32 are all fixedly installed on the bottom outer ring of the bottom ring 31 and are slidably connected to the guide groove 22.

[0030] The slide bar 32 is provided with a threaded hole 33. After the top support 3 slides to a certain position, the top support 3 and the support cylinder 2 can be fixed by screwing a bolt into the threaded hole 33 until the end of the bolt abuts against the groove wall of the guide groove 22.

[0031] The valve stem is passed through the bottom ring 31 and the support cylinder 21 in sequence and screwed into the base cylinder 14, which supports the bottom of the valve stem. If the valve stem is long, the top support 3 is pulled upward to move the slide bar 32 along the corresponding guide groove 22. When the bottom ring 31 exceeds the top of the valve stem, the movement is stopped. The top support 3 and the support cylinder 2 are fixed by screwing a bolt into the threaded hole 33 until the end of the bolt abuts against the groove wall of the guide groove 22.

[0032] If the valve stem is longer, the limiting ring 15 can be rotated. Since the limiting ring 15 is threadedly connected to the base cylinder 14, it can move upward during rotation, thereby driving the support cylinder 2 to move upward. Then, the support ring 16 is rotated upward along the base cylinder 14 to support the guide column 24 and provide stable support for the guide column 24. The support cylinder 2 is supported on the top of the base cylinder 1. At this time, the base cylinder 14, the support cylinder 2, and the top support 3 are all wrapped around the valve stem, providing support and protection for the valve stem. This can effectively prevent the valve stem from bending or being damaged due to instability or collision during hoisting.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A lifting structure to prevent valve stem bending, characterized in that, include: The base part (1) is used to support the support cylinder part (2) and the top support part (3), and to support the bottom end of the valve stem; Support cylinder (2), which is movably provided at the top of the base (1) and is used to support the middle part of the valve stem; Top support (3) is slidably disposed at the top of the support cylinder (2) to support and protect the top of the valve stem. When the valve stem is long, the top support (3) or the support cylinder (2) can be pulled up or the top support (3) and the support cylinder (2) can be pulled up at the same time to increase the height of the hoisting structure.

2. The lifting structure for preventing valve stem bending according to claim 1, characterized in that, The base part (1) includes a disc assembly and a seat cylinder assembly. The disc assembly includes a base plate (11), a top plate (12), and several support rods (13). The seat cylinder assembly includes a base cylinder (14), a limiting ring (15), and a support ring (16).

3. The lifting structure for preventing valve stem bending according to claim 2, characterized in that, The top plate (12) is fixedly mounted on the base tube (14), the base tube (14) is fixedly mounted on the upper surface of the base plate (11) and is fixedly connected to the top plate (12), the support ring (16) is sleeved on the outer ring of the base tube (14) and is threadedly connected to the base tube (14), and the limiting ring (15) is threadedly connected to the top of the outer ring of the base tube (14).

4. The lifting structure for preventing valve stem bending according to claim 2, characterized in that, The support cylinder (2) includes a support cylinder assembly and a limiting assembly. The support cylinder assembly includes a support cylinder (21), a connecting ring (23), and two side ears (25). The limiting assembly includes several guide grooves (22) and several guide posts (24).

5. The lifting structure for preventing valve stem bending according to claim 4, characterized in that, The connecting ring (23) is fixedly disposed at the bottom of the outer ring of the support cylinder (21), the guide post (24) is fixedly disposed at the bottom of the connecting ring (23), the guide post (24) is fixedly disposed with the limiting ring (15), the guide groove (22) is disposed on the outer ring of the support cylinder (21), and the side ears (25) are respectively fixedly disposed on both sides of the outer wall of the top of the support cylinder (21).

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