Lifting device for metal pipeline

Abstract

The utility model discloses a lifting device for a metal pipeline, and belongs to the technical field of pipeline maintenance. A lifting device for a metal pipeline comprises a base and further comprises supporting frames rotationally arranged on the two sides of the base, the supporting frames on the same side are connected through lifting arms, and the pipeline stretches across the two lifting arms; the hydraulic driving system is used for driving the supporting frames to rotate, and when the hydraulic driving system works, the tops of the pair of supporting frames are close to or away from each other; the supporting frames are rotationally arranged on the two sides of the base, the tops of the supporting frames can be driven to be folded under the action of the hydraulic pump and the telescopic cylinder, accurate lifting of a pipeline is achieved, the bases are slidably connected through the transverse rods, the bases can be expanded side by side, and the lifting efficiency is improved. A plurality of pipelines which share one supporting piece side by side are lifted, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline maintenance technology, and in particular to a lifting device for metal pipelines. Background Technology

[0002] In metal industrial piping systems, prolonged contact between pipes and supports can lead to corrosion at the contact points, especially in humid, high-temperature, or chemically corrosive environments, where the corrosion problem is more severe. Therefore, it is necessary to replace the supports or treat the corroded parts of the pipes.

[0003] Currently, replacing support components usually requires disassembling the pipes first, and then replacing the support components. This operation is complex, time-consuming, and requires shutting down the pipeline system, which has a significant impact on production. Although there are some mechanical devices that can lift the pipes and temporarily replace the support components, existing devices often have difficulty in accurately controlling the lifting height, which can easily lead to the pipes being lifted too high or blocking corrosion points. Furthermore, it is difficult to lift multiple pipes that are parallel to each other and share a single support at the same time, affecting the user experience. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that when replacing support components, it is not only inconvenient to accurately control the lifting height, but also difficult to lift multiple parallel pipes sharing a single support component at the same time. Therefore, this invention proposes a lifting device for metal pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lifting device for a metal pipe includes a base and a support frame rotatably disposed on both sides of the base. The support frames on the same side are connected by lifting arms, and the pipe spans across the two sets of lifting arms. A hydraulic drive system is used to drive the support frame to rotate. When the hydraulic drive system is working, the tops of a pair of support frames move closer to or further away from each other.

[0007] To facilitate the retraction or expansion of a pair of support frames, preferably, the hydraulic drive system includes a telescopic cylinder and a hydraulic pump for driving the telescopic cylinder. The telescopic cylinder is disposed between the pair of support frames and is used to drive the tops of the pair of support frames to move closer or further apart. The hydraulic pump is connected to the telescopic cylinder via a hydraulic pipe, and a control box is provided on the hydraulic pipe.

[0008] In order to make the two sets of telescopic cylinders move in unison, the telescopic cylinder control port is further connected to an adjustable pipe joint, and a tee is fixedly installed at the end of the hydraulic pipe away from the telescopic cylinder. The adjustable pipe joint is connected to the tee through connecting pipes.

[0009] To facilitate the adjustment of the telescopic cylinder's position on the support frame, the support frame is further provided with multiple sets of connecting holes, each containing a pin. The two ends of the telescopic cylinder are rotatably connected to a pair of pins on the support frame.

[0010] Preferably, the outer wall of the support frame is fixedly provided with lifting claws for supporting the lifting arm, and the two ends of the lifting arm are respectively located on the same side lifting claw.

[0011] Preferably, a limiting plate is fixedly provided at one end of the support frame near the top, and a through hole is provided on the limiting plate. A limiting screw is provided between a pair of support frames, and both ends of the limiting screw pass through the through hole, and a nut is threadedly connected to both ends of the limiting screw passing through the through hole.

[0012] Compared with the prior art, this utility model provides a lifting device for metal pipes, which has the following advantages:

[0013] 1. The lifting device for the metal pipe has a support frame that is rotatably installed on both sides of the base. The support frame is equipped with a lifting arm for lifting the pipe. Under the action of the hydraulic pump and telescopic cylinder, the top of the support frame can be driven to retract, so as to accurately lift the pipe. Moreover, the base is slidably connected by a crossbar, so the base can be expanded side by side, so as to lift multiple pipes that share a single support, thereby improving the efficiency of use.

[0014] 2. The lifting device for this metal pipe, by setting a limiting screw between a pair of support frames, allows the limiting screw to pass through the through holes on the pair of support frames after the pipe lifting height is determined, and then nuts are threaded to both ends of the limiting screw. This can prevent the support frames from unfolding during use, thus ensuring safety.

[0015] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model has a support frame that is rotatably set on both sides of the base, and a lifting arm for lifting the pipe is set on the support frame. Under the action of a hydraulic pump and a telescopic cylinder, the top of the support frame can be driven to retract, so as to achieve precise lifting of the pipe. Moreover, the bases are slidably connected by crossbars, so the bases can be expanded side by side, so as to lift multiple pipes that share a single support, thereby improving the usage effect. Attached Figure Description

[0016] Figure 1 This utility model provides a structural schematic diagram of a metal pipe lifting device. Figure 1 ;

[0017] Figure 2 This utility model provides a structural schematic diagram of a metal pipe lifting device. Figure 2 ;

[0018] Figure 3 This utility model provides a structural schematic diagram of a metal pipe lifting device. Figure 3 ;

[0019] Figure 4 This is a front view of a metal pipe lifting device proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Support frame; 201. Lifting claw; 202. Connecting hole; 203. Limiting plate; 3. Hydraulic pump; 301. Control box; 302. Telescopic cylinder; 4. Lifting arm; 5. Limiting screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example:

[0024] Reference Figures 1-4A lifting device for metal pipes includes a base 1 and a support frame 2, rotatably mounted on both sides of the base 1. Rotary seats are fixedly mounted on both sides of the base 1, and the bottom of the support frame 2 is rotatably connected to the rotating seats. At least two sets of base 1 can be provided, and the two sets of base 1 can be slidably connected by an extension. That is, two sets of base 1 form a pair, capable of lifting one or more parallel pipes on the same support. When the spacing between multiple parallel pipes on the same support is relatively large, two or three pairs of base 1 can be increased. Each base 1 is connected to the others by an extension. Here, the extension is designed as a horizontal bar, with slots at both ends of the base 1. The two ends of the horizontal bar are inserted into the corresponding slots. Furthermore, a U-shaped adjustment groove connected to the slots is provided on the top surface of the base 1, using bolts. The threaded connection between the end of the adjusting groove and the insertion rod extending into the slot not only fixes the two sets of bases 1 together, but also allows for appropriate adjustment of the distance between the two sets of bases 1. This facilitates support for pipes of different diameters or multiple closely spaced pipes, improving the performance. Furthermore, the support frames 2 located on the same side of the base 1 are connected by lifting arms 4. The lifting arms 4 are preferably rotary tubular structures. When supporting the pipe, the pipe can be straddled across the two sets of lifting arms 4. A hydraulic drive system is used to drive the support frames 2 to rotate. When the hydraulic drive system is working, the tops of the pair of support frames 2 move closer or further apart. When the tops of the support frames 2 move closer together and retract, the lifting arms 4 can be lifted upwards to raise the pipe. Conversely, when the tops of the support frames 2 move further apart and extend, the lifting arms 4 move downwards to move the pipe downwards.

[0025] In use, support frames 2 are rotatably installed on both sides of the base 1. Lifting arms 4 for raising the pipe are installed on the support frames 2. Under the action of hydraulic pump 3 and telescopic cylinder 302, the top of the support frames 2 can be driven to retract, so as to accurately raise the pipe. Moreover, the base 1 is slidably connected by a crossbar, so that the base 1 can be expanded side by side, so as to raise multiple pipes that share a single support, thereby improving the usage effect. By setting a limiting screw 5 between a pair of support frames 2, after the pipe lifting height is determined, the limiting screw 5 can be passed through the through hole on the pair of support frames 2, and then nuts are threaded to both ends of the limiting screw 5. This can prevent the support frames 2 from unfolding during use, which would affect the safety of use.

[0026] Reference Figure 1 -and Figure 3The hydraulic drive system includes a telescopic cylinder 302 and a hydraulic pump 3 for driving the telescopic cylinder 302. The telescopic cylinder 302 is positioned between a pair of support frames 2 to drive the tops of the pair of support frames 2 to move closer or further apart. The hydraulic pump 3 is connected to the telescopic cylinder 302 via a hydraulic pipe. A control box 301 is installed on the hydraulic pipe. The control box 301 is existing technology. During use, the hydraulic pump 3 can be controlled through the control box 301. The hydraulic pump 3 controls the telescopic cylinder 302 through the hydraulic pipe, and the telescopic cylinder 302 performs the telescopic action. At this time, the tops of the pair of support frames 2 expand or retract. The operation is simple, the control is reliable, and precise control can be achieved, improving the usage effect.

[0027] Reference Figures 1-3 The control port of the telescopic cylinder 302 is threaded with an adjustable pipe joint. A tee is fixedly installed at the end of the hydraulic pipe away from the telescopic cylinder 302. The adjustable pipe joint is connected to the tee through connecting pipes. In other words, the two telescopic cylinders 302 on a pair of bases 1 can be controlled by the same hydraulic pump 3. This not only reduces the cost of use, but also facilitates synchronous operation. When the response speeds of the two sets of telescopic cylinders 302 are not synchronized, the speed can be adjusted appropriately through the adjustable pipe joint to make the extension or retraction speeds of the two sets of telescopic cylinders 302 as consistent as possible, thereby improving the performance.

[0028] Reference Figure 1 , Figure 2 and Figure 4 Multiple sets of connection holes 202 are provided on the support frame 2, with two to six sets of connection holes 202. Here, we prefer three sets. A pin is provided in one set of connection holes 202, and the two ends of the telescopic cylinder 302 are rotatably connected to the pins on a pair of support frames 2 respectively. That is, in a pair of support frames 2, one end of the housing of the telescopic cylinder 302 is rotatably connected to the pin on one of the support frames 2, and the output end of the telescopic cylinder 302 is rotatably connected to the pin at the same height on the other support frame 2. It is easy to install and disassemble and is reliably fixed. In use, by providing multiple sets of connection holes 202 on the support frame 2, the installation position of the telescopic cylinder 302 on the support frame 2 can be adjusted according to the height of the lifting pipe to improve the lifting effect.

[0029] Reference Figure 1 , Figure 2 and Figure 4 Lifting claws 201 for supporting lifting arm 4 are fixedly installed on the outer wall of the support frame 2. The two ends of the lifting arm 4 are respectively located on the lifting claws 201 on the same side. When in use, the lifting claws 201 are fixedly installed on the support frame 2 to facilitate the support of the lifting arm 4. Moreover, after use, it is convenient to assemble, disassemble and store, thus improving the use effect.

[0030] Reference Figures 1-3A limiting plate 203 is fixedly installed on one end of the support frame 2 near the top. A through hole is provided on the limiting plate 203. A limiting screw 5 is provided between a pair of support frames 2. The two ends of the limiting screw 5 are respectively passed through the through hole, and nuts are threaded to both ends of the limiting screw 5 passing through the through hole. After the pipe lifting height is adjusted, the limiting screw 5 is passed through the through hole in sequence, and the two ends that pass through are threaded to the nuts. This can keep the support frame 2 in its current state and prevent the support frame 2 from unfolding under the gravity of the pipe, which would cause the pipe to fall and affect the safety of use.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lifting device for metal pipes, comprising a base (1), characterised in that, Also include: Support frame (2), rotatingly arranged on both sides of the base (1), and the same side support frame (2) is connected by lifting arm (4), and the pipeline is across the two groups of lifting arm (4); Hydraulic drive system for driving the support frame (2) rotation, when the hydraulic drive system works, the top of a pair of support frame (2) is close to each other or away from each other.

2. A lifting device for metal pipes according to claim 1, characterized in that The hydraulic drive system includes telescopic cylinder (302) and hydraulic pump (3) for driving telescopic cylinder (302) action, the telescopic cylinder (302) is arranged between a pair of support frame (2), for driving a pair of support frame (2) top close to each other or away from each other, and the hydraulic pump (3) is connected with telescopic cylinder (302) through hydraulic pipe, the hydraulic pipe is provided with control box (301).

3. A lifting device for metal pipes according to claim 2, characterized in that The telescopic cylinder (302) control port is screw connected with adjustable pipe joint, the end of the hydraulic pipe away from the telescopic cylinder (302) is fixedly provided with a tee, and the adjustable pipe joint is connected with the tee through the connecting pipe.

4. A metal pipe lifting device according to claim 2, wherein A plurality of connecting holes (202) are formed in the support frame (2), and a pin shaft is arranged in the connecting hole (202). The two ends of the telescopic cylinder (302) are rotatably connected with the pin shafts on a pair of support frames (2).

5. A metal pipe lifting device according to claim 1, wherein The outer wall of the support frame (2) is fixedly provided with a lifting claw (201) for supporting the lifting arm (4), and the two ends of the lifting arm (4) are located on the same side lifting claw (201).

6. A metal pipe lifting device according to claim 1, wherein The end close to the top of the support frame (2) is fixedly provided with a limiting plate (203), and the limiting plate (203) is provided with a through hole. A pair of limiting screws (5) are arranged between the support frames (2), and the two ends of the limiting screw (5) are respectively threaded out from the through hole, and the two ends of the limiting screw (5) threaded through the through hole are both screw connected with the nut.

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