Lifting device for overhauling large valve

Abstract

The utility model discloses a hoisting device for overhauling a large-scale valve, which comprises an arch frame and a control panel arranged on the side surface of the arch frame, the top of the arch frame is provided with a lifting component, the lifting end of the lifting component is provided with a connecting cable, the two ends of the connecting cable are respectively and fixedly provided with a loading rope, the end part of the loading rope is fixedly provided with a positioning plate; a positioning assembly is arranged between the two positioning plates, a clamping assembly is installed at the bottoms of the positioning plates, the clamping assembly comprises an arc-shaped positioning plate installed at the bottoms of the positioning plates, connecting plates are rotationally installed on the two sides of the arc-shaped positioning plate, and positioning columns are fixed to the ends, away from the arc-shaped positioning plate, of the connecting plates. According to the hoisting device for overhauling the large valve, the valve is positioned through the arranged clamping assembly, shaking of the valve in the maintenance process can be effectively reduced, and the hoisting device has high stability, is suitable for valves of various sizes and has high applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of valve maintenance, in particular to a lifting device for maintenance of large valves. Background Art

[0002] Valves are control components in pipeline fluid delivery systems, usually used to change the passage section and the flow direction of the medium, and have functions such as diversion, cutoff, throttling, non-return, diversion or overflow pressure relief. Some pipelines are usually set with a larger diameter to increase the fluid flow rate. Correspondingly, the valves adapted to them are usually set with a larger volume, resulting in a heavier valve weight. It is inconvenient for workers to carry large valves during maintenance. At present, lifting devices are often set to assist workers in the maintenance of large valves. However, when common lifting devices are used, the contact position between the lifting device and the valve is prone to shaking, which poses a safety hazard and leads to certain deficiencies in the maintenance of large valves. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a lifting device for large valve maintenance. The valve is positioned by a clamping assembly, which can effectively reduce the shaking of the valve during maintenance and has high stability. The lifting device is suitable for valves of various sizes and has high applicability, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting device for large valve maintenance, comprising an arch frame and a control panel installed on the side of the arch frame, a lifting assembly is installed on the top of the arch frame, and a connecting rope is installed at the lifting end of the lifting assembly, load ropes are fixed at both ends of the connecting rope, positioning plates are fixed at the ends of the load ropes, a positioning assembly is arranged between the two positioning plates, a clamping assembly is installed at the bottom of the positioning plate, the clamping assembly comprises an arc-shaped positioning plate installed at the bottom of the positioning plate, connecting plates are rotatably installed on both sides of the arc-shaped positioning plate, and a positioning column is fixed at one end of the connecting plate away from the arc-shaped positioning plate, and a limiting assembly is arranged between two adjacent connecting plates.

[0005] As a preferred technical solution of the utility model, a mounting plate is fixed on the top of the arch frame, and the lifting assembly includes a hoisting mechanism installed on the upper side of the mounting plate, a load-bearing rope is provided on the hoisting mechanism, and the connecting rope is installed on the end of the load-bearing rope. The hoisting mechanism, a control switch corresponding to the hoisting mechanism in the control panel, and an external power supply are connected in series to form a working circuit of the hoisting mechanism.

[0006] As a preferred technical solution of the utility model, a positioning seat is installed on the side of the mounting plate near the load-bearing rope, a positioning wheel is rotatably installed in the positioning seat, the positioning wheel contacts the side of the load-bearing rope, and positioning seats and positioning wheels are provided on both sides of the load-bearing rope.

[0007] As a preferred technical solution of the utility model, the positioning assembly includes a positioning screw, the positioning screw is slidably connected to the positioning plate, and the side surface of the positioning screw is threadedly connected with a positioning nut for positioning the positioning plate.

[0008] As a preferred technical solution of the utility model, the limiting component includes an electric telescopic rod, the fixed end of the electric telescopic rod is hinged to the side of one of the connecting plates, the telescopic end of the electric telescopic rod is hinged to the side of the other connecting plate, and the electric telescopic rod, the control switch corresponding to the electric telescopic rod in the control panel, and the external power supply are connected in series to form a working circuit of the electric telescopic rod.

[0009] As a preferred technical solution of the utility model, a moving wheel is installed at the bottom of the arch frame, and a locking mechanism is provided on the moving wheel.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The lifting device for large valve maintenance in the example of the utility model is moved to the valve to be repaired, and the two sets of clamping components are clamped on both ends of the valve. The arc-shaped positioning plate first contacts the end of the valve to position the valve, and then the limiting component drives the connecting plate to rotate to change the distance between the two positioning columns, so that the two positioning columns contact the inside of the valve, thereby improving the stability during the lifting process.

[0012] 2. In the lifting device for large valve maintenance illustrated in the utility model, the positioning wheel installed in the positioning seat plays a positioning role for the load-bearing rope, preventing the load-bearing rope from swinging left and right when the hoisting mechanism is entangled or released, thereby improving the stability of the device when in use. At the same time, the positioning wheel is used to reduce the friction between the load-bearing rope and the arch frame, facilitating the use of the load-bearing rope.

[0013] 3. The lifting device for large valve maintenance in the example of the utility model positions the positioning plate at a certain position outside the positioning screw by adjusting the position of the positioning nut, and adjusts the spacing between the two sets of load ropes to facilitate the installation and positioning of the clamping assembly, so that the device can be applied to large valves of various sizes. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a front view structural schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0018] Figure 5 It is a structural schematic diagram of the clamping assembly in the utility model.

[0019] In the figure: 1 arch frame, 2 moving wheel, 3 mounting plate, 4 winch mechanism, 5 load-bearing rope, 6 connecting rope, 7 load rope, 8 positioning plate, 9 positioning screw, 10 positioning nut, 11 arc positioning plate, 12 connecting plate, 13 positioning column, 14 electric telescopic rod, 15 positioning seat, 16 positioning wheel, 17 control panel. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] See also Figure 1-5 The utility model provides a technical solution: a lifting device for large valve maintenance, comprising an arch frame 1 and a control panel 17 installed on the side of the arch frame 1, the control panel 17 is a controller with a display screen and a switch group, which is convenient for controlling the operation of electronic components in the lifting device through the controller, a lifting assembly is installed on the top of the arch frame 1, and a connecting rope 6 is installed at the lifting end of the lifting assembly, and the connecting rope 6 is driven up and down by the lifting assembly to realize the lifting of the valve by the device, both ends of the connecting rope 6 are fixed with load ropes 7, and two groups of load ropes 7 are provided, which are convenient for positioning on both sides of the valve to position the valve, and positioning plates 8 are fixed at the ends of the load ropes 7, and a positioning assembly is provided between the two positioning plates 8, and the positioning assembly is used to adjust the spacing between the positioning plates 8. The spacing between the positioning plates 8 is adjusted by the positioning assembly, which makes it convenient for the device to be applicable to the lifting of valves of various sizes.

[0022] A clamping assembly is installed at the bottom of the positioning plate 8, and the clamping assembly is used to connect the device to the valve. The clamping assembly includes an arc-shaped positioning plate 11 installed at the bottom of the positioning plate 8, and connecting plates 12 are rotatably installed on both sides of the arc-shaped positioning plate 11, and a positioning column 13 is fixed at one end of the connecting plate 12 away from the arc-shaped positioning plate 11, and a limiting assembly is arranged between two adjacent connecting plates 12. Move the device to the valve to be inspected, and clamp the two sets of clamping assemblies at both ends of the valve. The arc-shaped positioning plate 11 first contacts the end of the valve to position the valve, and then the limiting assembly drives the connecting plate 12 to rotate to change the distance between the two positioning columns 13, so that the two positioning columns 13 contact the inside of the valve, thereby improving the stability during the lifting process.

[0023] A mounting plate 3 is fixed on the top of the arch frame, and the lifting assembly includes a hoisting mechanism 4 installed on the upper side of the mounting plate 3, a load-bearing rope 5 is arranged on the hoisting mechanism 4, and a connecting rope 6 is installed at the end of the load-bearing rope 5. The hoisting mechanism 4, the control switch corresponding to the hoisting mechanism 4 in the control panel 17, and the external power supply are connected in series to form a working circuit of the hoisting mechanism 4, and the hoisting mechanism 4 is driven to work through the control panel 17, and the load-bearing rope 5 is wound or released by the hoisting mechanism 4. When the hoisting mechanism 4 winds the load-bearing rope 5, the device lifts the valve, and when the hoisting mechanism 4 releases the load-bearing rope 5, the device places the valve, which is convenient for the inspection and maintenance of the valve.

[0024] A positioning seat 15 is installed on the side of the mounting plate 3 near the load-bearing rope 5, and a positioning wheel 16 is rotatably installed in the positioning seat 15. The positioning wheel 16 contacts the side of the load-bearing rope 5. Positioning seats 15 and positioning wheels 16 are provided on both sides of the load-bearing rope 5. The positioning wheel 16 installed in the positioning seat 15 has a positioning effect on the load-bearing rope 5 to prevent the load-bearing rope 5 from swinging left and right when the winch mechanism 4 is entangled or releases the load-bearing rope 5, thereby improving the stability of the device when in use. At the same time, the positioning wheel 16 is used to reduce the friction between the load-bearing rope 5 and the arch frame 1, so as to facilitate the use of the load-bearing rope 5.

[0025] The positioning assembly includes a positioning screw 9, which is slidingly connected to the positioning plate 8. The side of the positioning screw 9 is threadedly connected with a positioning nut 10 for positioning the positioning plate 8. The positioning plate 8 is positioned at a certain position outside the positioning screw 9 by adjusting the position of the positioning nut 10, and the spacing between the two sets of load ropes 7 is adjusted to facilitate the installation and positioning of the clamping assembly, so that the device can be applied to large valves of various sizes.

[0026] The limiting component includes an electric telescopic rod 14, a fixed end of the electric telescopic rod 14 is hinged to the side of one of the connecting plates 12, and a telescopic end of the electric telescopic rod 14 is hinged to the side of the other connecting plate 12. The hinged manner is preferably hinged through a hinge seat. The electric telescopic rod 14, a control switch corresponding to the electric telescopic rod 14 in the control panel 17, and an external power supply are connected in series to form a working circuit of the electric telescopic rod 14. The electric telescopic rod 14 is controlled to work through the control panel 17, and the connecting plate 12 is driven by the electric telescopic rod 14 to rotate so that the distance between the two positioning columns 13 changes, so that the two positioning columns 13 are in contact with the inside of the valve, thereby improving the stability during the lifting process.

[0027] A moving wheel 2 is installed at the bottom of the arch frame 1, and a locking mechanism is provided on the moving wheel 2. The moving wheel 2 facilitates the overall movement of the arch frame 1 and facilitates the use of the device.

[0028] The hoisting mechanism 4, the electric telescopic rod 14 and the control panel 17 used in the present invention are all commonly used electronic components in the prior art, and the method of controlling the hoisting mechanism 4 and the electric telescopic rod 14 by the control panel 17 is a commonly used technical means for technicians, and its working method and circuit structure are well-known technologies and will not be described in detail here.

[0029] When using:

[0030] Move the device to the valve to be inspected, clamp the two sets of clamping components on both ends of the valve, and position the valve by the arc-shaped positioning plate 11 contacting the end of the valve first. Then, control the electric telescopic rod 14 through the control panel 17. The electric telescopic rod 14 drives the connecting plate 12 to rotate to change the distance between the two positioning columns 13, so that the two positioning columns 13 contact the inside of the valve, thereby improving the stability during the lifting process.

[0031] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A lifting device for overhauling a large valve, comprising an arch frame (1) and a control panel (17) mounted on the side of the arch frame (1), characterized in that: A lifting assembly is installed on the top of the arch frame (1), and a connecting rope (6) is installed on the lifting end of the lifting assembly, and a load rope (7) is fixed to both ends of the connecting rope (6), and a positioning plate (8) is fixed to the end of the load rope (7), and a positioning assembly is arranged between the two positioning plates (8), and a clamping assembly is installed at the bottom of the positioning plate (8), and the clamping assembly includes an arc-shaped positioning plate (11) installed at the bottom of the positioning plate (8), and connecting plates (12) are rotatably installed on both sides of the arc-shaped positioning plate (11), and a positioning column (13) is fixed to one end of the connecting plate (12) away from the arc-shaped positioning plate (11), and a limiting assembly is arranged between two adjacent connecting plates (12).

2. The lifting device for large valve maintenance according to claim 1 is characterized in that: A mounting plate (3) is fixed to the top of the arch frame, and the lifting assembly comprises a hoisting mechanism (4) mounted on the upper side of the mounting plate (3); a load-bearing rope (5) is arranged on the hoisting mechanism (4); the connecting rope (6) is mounted on the end of the load-bearing rope (5); the hoisting mechanism (4), a control switch corresponding to the hoisting mechanism (4) in the control panel (17), and an external power supply are connected in series to form a working circuit of the hoisting mechanism (4).

3. The lifting device for large valve maintenance according to claim 2 is characterized in that: A positioning seat (15) is installed on the side of the mounting plate (3) near the load-bearing rope (5), a positioning wheel (16) is rotatably installed in the positioning seat (15), the positioning wheel (16) is in contact with the side of the load-bearing rope (5), and the positioning seat (15) and the positioning wheel (16) are arranged on both sides of the load-bearing rope (5).

4. The lifting device for large valve maintenance according to claim 1 is characterized in that: The positioning assembly comprises a positioning screw (9), the positioning screw (9) being slidably connected to the positioning plate (8), and a positioning nut (10) for positioning the positioning plate (8) being threadedly connected to a side surface of the positioning screw (9).

5. The lifting device for large valve maintenance according to claim 1 is characterized in that: The limiting assembly comprises an electric telescopic rod (14), a fixed end of the electric telescopic rod (14) being hinged to a side surface of one of the connecting plates (12), a telescopic end of the electric telescopic rod (14) being hinged to a side surface of another connecting plate (12), and the electric telescopic rod (14), a control switch corresponding to the electric telescopic rod (14) in a control panel (17), and an external power supply being connected in series to form a working circuit of the electric telescopic rod (14).

6. The lifting device for large valve maintenance according to claim 1 is characterized in that: A moving wheel (2) is installed at the bottom of the arch frame (1), and a locking mechanism is provided on the moving wheel (2).

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