Hoop lifting appliance for mounting control valve

Abstract

The invention relates to the field of tools, in particular to a hoop lifting appliance for mounting a control valve, which comprises a surrounding frame surrounding a pipeline and two arc plate hoops symmetrically arranged in the surrounding frame, two screws are vertically arranged on the outer sides of the two arc plate hoops, threaded pipes are in threaded connection with the four screws, the four threaded pipes are rotationally arranged on the two sides of the surrounding frame in pairs, and the two ends of the two threaded pipes are connected with the two ends of the surrounding frame. Power shafts are rotatably arranged on the two sides of the surrounding frame, each power shaft is in synchronous transmission connection with the two threaded pipes on the same side, short shafts are coaxially rotatably arranged on the two sides of the surrounding frame, cantilevers are rotatably arranged on the two short shafts, hanging shafts are rotatably arranged at the lower ends of the two cantilevers in a penetrating mode, and chain bases used for being connected with chain blocks are fixed to the middles of the hanging shafts; the problems that a chain block cannot be fixed due to space limitation, and valve installation is affected can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tools, in particular to a control valve installation hoop lifting appliance. BACKGROUND

[0002] In the control valve installation process of the polymerization device, the conventional manpower cannot directly complete the lifting due to the overweight of the valve quality, and auxiliary work must be performed with the help of the chain hoist. However, the on-site construction environment has significant restrictions, the process pipeline layout is dense and lacks preset lifting anchor points, and the suspension support cannot be adjusted and installed due to space limitations, resulting in that the chain hoist fixing becomes a technical bottleneck restricting the engineering progress. SUMMARY

[0003] In view of the technical problem in the prior art that the chain hoist cannot be fixed due to space limitations, affecting the valve installation, the present application provides a control valve installation hoop lifting appliance.

[0004] The present application adopts the following technical scheme: A control valve installation hoop lifting appliance, comprising a surrounding frame surrounding a pipeline, and two arc plate hoops symmetrically arranged in the surrounding frame, the outer sides of the two arc plate hoops are each provided with two screw rods, four screw rods are each threadedly connected with a threaded pipe, the four threaded pipes are each pair of one another and rotate on the two sides of the surrounding frame, the two sides of the surrounding frame are each rotatably provided with a power shaft, each power shaft is synchronously transmissionally connected with the two threaded pipes on the same side, the two sides of the surrounding frame are coaxially rotatably provided with a short shaft, two cantilevers are rotatably arranged on the two short shafts, a lifting shaft is rotatably arranged at the lower ends of the two cantilevers, and a chain seat for connecting a chain hoist is fixedly arranged on the middle part of the lifting shaft; the two power shafts are driven to move axially in the threaded pipes, and then the two arc plate hoops are moved in a symmetrical state relative to the pipeline direction, are embraced on the outer surface of the pipeline, and are fixed with the pipeline, the short shafts installed on the surrounding frame are matched with the installation of the cantilevers, the lifting shaft is suspended below the surrounding frame under the influence of its own gravity, the chain hoist is installed by the chain seat, and thus the control valve lifting operation is formed; the rigid structure of the pipeline is used as a force bearing point, the dilemma of the lack of additional fixed points is avoided, the mechanical stability of the two-ton load in the lifting process is ensured, the installation efficiency is effectively improved in the control valve installation process, the equipment integrity is ensured, and the safety of the control valve lifting and installation operation is effectively ensured. Preferably, the surrounding frame comprises two pipe seats for the threaded pipe rotation installation, the upper and lower sides of each pipe seat are each inclined to the pipeline side and provided with a fin frame, the middle part of each fin frame is provided with an open clamping groove, and the two fin frames on the same side are clamped with a transverse connecting frame through the open clamping groove, and the short shafts are rotatably arranged at the middle positions of the pipe seats; the pipe seats and the two fin frames form trapezoidal groove type frame bodies, and the two trapezoidal groove type frame bodies are connected through the two transverse connecting frames, so that the surrounding frame can surround the pipeline; Preferably, the cross connection frame comprises a cross shaft, both ends of the cross shaft are fixed with clamping plates, the diameter size of the cross shaft is smaller than the opening size of the opening clamping groove; the convex edges on the clamping plates are gap fitted with the opening clamping groove, and form a limit between each other, forming a stable connection between the two cross connection frames and the two trapezoidal groove frame bodies; and the cross shaft can pass in and out at the opening of the opening clamping groove, so as to form quick connection and disassembly between the cross connection frame and the trapezoidal groove frame body. Preferably, the outer side of the clamping plate is provided with an electromagnet, and the electromagnet is attracted to the fin frame when turned on; the fin frame is closely attached to the clamping plate, ensuring the stability of the connection between the cross connection frame and the trapezoidal groove frame body.

[0005] Preferably, the clamping plates at both ends of the same cross shaft are fixed with a cross plate seat, a sliding rod frame is slidably penetrated through the cross plate seat, and wheel frames are fixed at the front and rear ends of the sliding rod frame close to the pipeline; rollers are rotatably arranged in the two wheel frames; and springs are arranged between the wheel frames and the cross plate seat; after the cross connection frame and the trapezoidal groove frame body are installed around the pipeline, the surrounding frame will be in contact with the pipeline through the four rollers, which can facilitate the movement of the surrounding frame on the pipeline, thereby facilitating the adjustment of the position of the surrounding frame on the pipeline.

[0006] Preferably, the rollers are in the shape of a tapered cylinder with thin middle and thick ends; the pipeline is ensured to be located in the center of the surrounding frame.

[0007] Preferably, the wheel frames are located at the outer sides of the front and rear ends of the surrounding frame, so as to avoid interference between the wheel frames and the two arc plate hoops located in the inner part of the surrounding frame when the wheel frames are close to the pipeline and tightly embrace the pipeline.

[0008] Preferably, the two screw rods on the same side are fixed with inner clamping plates close to the pipeline end, and the outer middle part of the arc plate hoop is provided with a T-slot seat, and the inner clamping plate can be gap fitted and slid in the T-slot seat; the arc plate hoop can be replaced according to the diameter of the pipeline, so as to improve the applicability of the lifting device; Preferably, the inner ends of the top tightening screws are in contact with the inner wall of the T-slot seat, so as to form axial limiting and fixing between the inner clamping plate and the T-slot seat. Preferably, the T-slot seat is provided with a clamping hole at the position corresponding to the top tightening screw at the front and rear ends, so that the inner end of the top tightening screw can be coaxially inserted into the clamping hole, and the axial limiting and fixing between the inner clamping plate and the T-slot seat is better formed.

[0009] The beneficial effects of the present application are as follows: 1. The two arc plate hoops are symmetrically moved towards the pipeline direction, and are embraced on the outer surface of the pipeline, forming fixation with the pipeline, so as to use the rigid structure of the pipeline as a force bearing fulcrum, avoiding the dilemma of missing additional fixed points, ensuring the mechanical stability of two-ton load in the lifting process, effectively improving the installation efficiency in the control valve installation process, ensuring the integrity of the equipment, and effectively ensuring the safety of the control valve lifting and installation operation. 2, the convex edge on the card board and the gap of the open card slot, limit each other, form two horizontal connecting frames and two stable connections between the trapezoidal slot type frame bodies; moreover, the horizontal shaft can enter and exit at the opening of the open card slot, so as to form quick connection and disassembly between the horizontal connecting frame and the trapezoidal slot type frame body; 3, the surrounding frame will be in contact with the pipeline through four rollers, which can facilitate the movement of the surrounding frame on the pipeline, thereby facilitating the adjustment of the position of the surrounding frame on the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 And Figure 2 is a structural diagram of the control valve installation clamp hanger; Figure 3 And Figure 4 is a structural diagram of the pipe seat, fin frame and open card slot; Figure 5 is a structural diagram of the screw rod, inner card plate and tightening screw; Figure 6 is a structural diagram of the arc plate clamp, T slot seat and card hole; Figure 7 And Figure 8 is a structural diagram of the horizontal connecting frame; Figure 9 is a structural diagram of the cantilever, hanging shaft and chain seat.

[0011] In the drawings: Pipe seat 1; Fin frame 2; Open card slot 3; Threaded pipe 4; Short shaft 5; Power shaft 6; Screw rod 7; Inner card plate 8; Tightening screw 9; Arc plate clamp 10; T slot seat 11; Card hole 12; Horizontal shaft 13; Card board 14; Electromagnet 15; Horizontal plate seat 16; Slide rod frame 17; Wheel frame 18; Roller 19; Spring 20; Cantilever 21; Hanging shaft 22; Chain seat 23. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0013] Referring to Figures 1-9The utility model provides a kind of control valve installation hoop lifting appliance, including the enclosure of pipeline, and two arc plate hoops 10 being symmetrically arranged in the enclosure, the outer side of two arc plate hoops 10 is vertically provided with two screw rods 7, four screw rods 7 are all threadedly connected with threaded tube 4, four threaded tubes 4 are rotated in two sides of the enclosure in pair, the two sides of the enclosure are all rotated with power shaft 6, every power shaft 6 is synchronous transmission connection with the two threaded tubes 4 of same side, the coaxial rotation of short shaft 5 is formed in the two sides of the enclosure, two cantilevers 21 are rotated on two short shafts 5, hoisting shaft 22 is penetrated and rotated in the lower end of two cantilevers 21, chain seat 23 for connecting inverted chain is fixed in the middle of hoisting shaft 22.

[0014] In use, the enclosure is sleeved around the pipeline at a suitable position, and the two power shafts 6 are driven synchronously to drive the two threaded tubes 4 on the same side, and the threaded tubes 4 and the screw rods 7 are screwed to move the screw rods 7 axially in the threaded tubes 4, so that the two arc plate hoops 10 move symmetrically towards the pipeline and are clamped on the outer surface of the pipeline to form a fixed connection with the pipeline, the threaded tubes 4 are rotated on the enclosure to form a fixed connection between the enclosure and the pipeline, the short shafts 5 installed on the enclosure are used to install the cantilevers 21, the hoisting shaft 22 is suspended below the enclosure under the influence of its own gravity, and the inverted chain is installed by the chain seat 23, thereby forming the control valve lifting operation. Moreover, the two short shafts 5 are coaxially arranged on the two sides of the enclosure, and the chain seat 23 is fixed in the middle of the hoisting shaft 22 to ensure that the lifting point is balanced; the arc plate hoop 10 is provided with a rubber anti-slip lining installed on the contact surface of the hoop after load testing to improve the friction between the arc plate hoop 10 and the outer wall of the pipeline and form a double safety protection system. It is to be noted that the power shaft 6 is connected with the two threaded tubes 4 by a chain transmission to ensure that the power shaft 6 and the two threaded tubes 4 rotate synchronously, the power shaft 6 can be driven by a power motor, and the transmission torque of the power motor to the power shaft 6 is controlled by a control module to accurately control the pre-tightening force between the threaded tube 4 and the screw rod 7, so as to ensure that the arc plate hoop 10 tightly presses the outer wall of the pipeline; the arc plate hoop 10 is semicircular, and the outer wall is uniformly provided with a plurality of rib plates to ensure the strength of the arc plate hoop 10, and the uniformity of the clamping force of the arc plate hoop 10 is ensured by the two screw rods 7.

[0015] Reference Figures 3-4And 7-8, the enclosure includes two pipe seats 1 for threaded pipe 4 rotationally mounted, each pipe seat 1 is inclined to the pipe side and is provided with a fin frame 2 on both sides, the middle of each fin frame 2 is provided with an open clamping groove 3, the same side of the two fin frames 2 is clamped with a cross connecting frame through the open clamping groove 3, the short shaft 5 is rotated in the middle position of the pipe seat 1.

[0016] The pipe seat 1 and the two fin frames 2 form a trapezoidal groove type frame body, and the two trapezoidal groove type frame bodies are connected by the two cross connecting frames, so that the enclosure can be surrounded on the pipe; Wherein, by the short shaft 5 located in the middle position of the pipe seat 1, it ensures that the lifting tool is evenly stressed when in use.

[0017] Further, the cross connecting frame includes a cross shaft 13, both ends of the cross shaft 13 are fixed with a clamping plate 14, the diameter size of the cross shaft 13 is smaller than the opening size of the open clamping groove 3.

[0018] When the enclosure is surrounded on the pipe, first, the two trapezoidal groove type frame bodies are symmetrically arranged on both sides of the pipe, then the cross shaft 13 of the two cross connecting frames is inserted into the two open clamping grooves 3 on the same side at the same time, and then the two trapezoidal groove type frame bodies are moved away along the two cross shafts 13 to tightly clamp the clamping plate 14, so that the convex rib on the clamping plate 14 is gap matched with the open clamping groove 3, and the limit between them is formed, and the stable connection between the two cross connecting frames and the two trapezoidal groove type frame bodies is formed; Moreover, the cross shaft 13 can be in and out of the open clamping groove 3, so that the quick connection and disassembly between the cross connecting frame and the trapezoidal groove type frame body can be formed. Wherein, it should be noted that the open clamping groove 3 is U-shaped, and the side groove is extended outward on both sides of the U-shaped groove, when the clamping plate 14 is attached to the fin frame 2, the convex rib on the clamping plate 14 can be inserted into the side groove, thereby forming the limit between them.

[0019] Further, the clamping plate 14 is provided with an electromagnet 15, and the electromagnet 15 is attracted to the fin frame 2 when it is turned on.

[0020] Through the setting of the electromagnet 15, when the electromagnet 15 is turned on, the magnetic force can attract the fin frame 2, so that the fin frame 2 is closely attached to the clamping plate 14, and the stability of the connection between the cross connecting frame and the trapezoidal groove type frame body is ensured.

[0021] Referring to 7-8, the clamping plates 14 at both ends of the same cross shaft 13 are fixed with a cross plate seat 16, a slide rod frame 17 is slidably penetrated through the cross plate seat 16, the front and rear ends of the slide rod frame 17 are fixed with a wheel frame 18 near the pipe end, and a roller 19 is rotatably arranged in the two wheel frames 18, and a spring 20 is arranged between the wheel frame 18 and the cross plate seat 16; After the transverse connecting frame is installed on the pipeline, the surrounding frame will be in contact with the pipeline through the four rollers 19, and before the two arc plate clamps 10 are not tightly clamped on the pipeline, the surrounding frame can be moved on the pipeline through the four rollers 19, so as to facilitate the adjustment of the position of the surrounding frame on the pipeline. It should be noted that one of the two wheel frames 18 on the same side is provided with a micro motor, which drives the corresponding roller 19, so as to form automatic movement of the surrounding frame on the pipeline, further facilitating the adjustment of the position of the surrounding frame on the pipeline.

[0022] Further, the roller 19 is in the shape of a tapered cylinder with thin middle and thick ends. Through the tapered cylinder shape of the roller 19 and the elastic force of the spring 20, the roller 19 can always be tightly contacted with the pipeline, and the pipeline can be centered in the center of the surrounding frame, and at the same time, the surrounding frame can adapt to pipelines with different diameters.

[0023] Further, by locating the wheel frame 18 outside the front and rear ends of the surrounding frame, interference between the wheel frame 18 and the two arc plate clamps 10 located inside the surrounding frame when approaching and clamping the pipeline can be avoided.

[0024] Referring to Figures 5-6 The two screws 7 on the same side are fixed with inner clamping plates 8 near the pipeline end, and the outer side of the arc plate clamp 10 is provided with a T-slot base 11, and the inner clamping plate 8 can be gap-fitted and slid in the T-slot base 11.

[0025] The arc plate clamp 10 can be slid and clamped on the inner clamping plate 8 through the T-slot base 11, so as to facilitate replacement of appropriate arc plate clamps 10 according to the diameter of the pipeline, and improve the applicability of the lifting device; Wherein, the two ends of the inner clamping plate 8 are provided with chamfers, so as to facilitate the sliding of the inner clamping plate 8 into the T-slot base 11, and improve the replacement speed of the arc plate clamp 10.

[0026] Further, the front and rear ends of the inner clamping plate 8 are penetrated by top tightening screws 9.

[0027] The inner end of the top tightening screw 9 is tightly contacted with the inner wall of the T-slot base 11, so as to form axial limiting and fixing between the inner clamping plate 8 and the T-slot base 11; And further, the T-slot base 11 is provided with a clamping hole 12 at the corresponding position of the top tightening screw 9 at the front and rear ends, so that the inner end of the top tightening screw 9 can be coaxially inserted into the clamping hole 12, and the axial limiting and fixing between the inner clamping plate 8 and the T-slot base 11 is better formed.

[0028] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A clamp lifting device for installing a control valve, characterized in that, The enclosure includes a frame surrounding the pipe and two symmetrically arranged arc plate clamps (10) inside the frame. Two screws (7) are vertically arranged on the outer side of each of the two arc plate clamps (10). Threaded pipes (4) are threaded onto each of the four screws (7). The four threaded pipes (4) rotate in pairs on both sides of the frame. Power shafts (6) rotate on both sides of the frame. Each power shaft (6) is synchronously connected to the two threaded pipes (4) on the same side. Short shafts (5) rotate coaxially on both sides of the frame. Rotating cantilever arms (21) rotate on each of the two short shafts (5). A hanging shaft (22) rotates through the lower end of each of the two cantilever arms (21). A chain seat (23) for connecting a chain hoist is fixed in the middle of the hanging shaft (22).

2. The clamp lifting device for installing a control valve according to claim 1, characterized in that, The frame includes two pipe seats (1) for rotating installation of threaded pipes (4). Each pipe seat (1) has wing frames (2) inclined towards the pipe side on both the upper and lower sides. Each wing frame (2) has an open slot (3) in the middle. The two wing frames (2) on the same side are connected to a cross frame through the open slot (3). The short shaft (5) rotates in the middle position of the pipe seat (1).

3. The clamp lifting device for installing a control valve according to claim 2, characterized in that, The horizontal connecting frame includes a horizontal shaft (13), and both ends of the horizontal shaft (13) are fixed with a clamping plate (14). The diameter of the horizontal shaft (13) is smaller than the opening size of the opening slot (3).

4. The clamp lifting device for installing a control valve according to claim 3, characterized in that, An electromagnet (15) is provided on the outside of the card plate (14), and the electromagnet (15) attracts the wing frame (2) when it is turned on.

5. A clamp lifting device for installing a control valve according to claim 3 or 4, characterized in that, A horizontal plate seat (16) is fixed between the clamping plates (14) at both ends of the same horizontal axis (13). A sliding rod frame (17) slides through the horizontal plate seat (16). Wheel frames (18) are fixed at both ends of the sliding rod frame (17) near the pipe end. Rollers (19) rotate in both wheel frames (18). A spring (20) is provided between the wheel frame (18) and the horizontal plate seat (16).

6. A clamp lifting device for installing a control valve according to claim 5, characterized in that, The roller (19) is a conical cylinder shape that is thinner in the middle and thicker at both ends.

7. A clamp lifting device for installing a control valve according to claim 5, characterized in that, The wheel frame (18) is located outside the front and rear ends of the frame.

8. A clamp lifting device for installing a control valve according to claim 1, characterized in that, Two screws (7) on the same side are fixed with inner clamping plates (8) near the pipe end. The outer middle of the arc plate clamp (10) is provided with a T-slot seat (11). The inner clamping plate (8) can slide in the T-slot seat (11) with clearance fit.

9. A clamp lifting device for installing a control valve according to claim 8, characterized in that, Both ends of the inner card plate (8) are threaded with tightening screws (9).

10. A clamp lifting device for installing a control valve according to claim 1, characterized in that, The front and rear ends of the T-slot (11) are provided with locking holes (12) corresponding to the tightening screws (9).

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