Flange hoisting tool

Abstract

The utility model relates to a flange lifting tool which comprises a lifting seat, and a lifting lug is connected to the lifting seat. The lifting assembly is connected to the side, away from the lifting lug, of the lifting seat and comprises a plurality of lifting hooks, and the lifting hooks are driven by a translation mechanism to be close to or away from one another; the translation mechanism comprises a connecting seat located below the lifting seat, sliding rods in one-to-one correspondence with the lifting hooks are connected to the connecting seat, the translation mechanism further comprises a sliding block, the sliding block is in sliding connection with the sliding rods, the lifting hooks are connected with the sliding block, the sliding block is connected with the lifting seat through a connecting rod, and the two sides of the connecting rod are hinged to the sliding block and the lifting seat respectively. Compared with the prior art, the flange lifting device has the advantages that the lifting seat, the lifting assembly and the translation mechanism are matched, when the lifting seat ascends and descends up and down, the sliding block is driven by the connecting rod to reciprocate along the sliding rod, a flange can be clamped or disengaged only through one-step action, the process is simpler, and the flange can be lifted more stably and quickly.

Description

Technical Field

[0001] The utility model relates to the field of flange movement, in particular to a flange lifting tool. Background Art

[0002] Pressure vessels are widely used, and they play an important role in many sectors such as industry, civil industry, military industry, and many fields of scientific research. Among them, the most used are in the chemical industry and petrochemical industry, and the pressure vessels used in the petrochemical industry alone account for about 50% of the total number of pressure vessels.

[0003] In the process of pressure vessel production, for some large pressure vessels, due to their large size, the corresponding components are also large, such as the cylinder, flanges for connection, etc. In the process of flange processing, it is necessary to lift and move the flange to meet the needs of processing and manufacturing. At present, ordinary hooks are usually used to lift the flange. This method has the problem of poor stability during lifting. The flange is easy to fall off if the center of gravity is unstable. The position of the hook needs to be adjusted continuously to ensure the stability of the flange after lifting, which wastes a lot of processing time and relatively reduces the processing efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a flange lifting tool which can stably, quickly and conveniently lift a large flange.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a flange lifting tool, the innovation of which is: comprising:

[0006] A lifting seat, on which a lifting lug is connected;

[0007] A lifting assembly connected to the lifting seat at a side away from the lifting ear, wherein the lifting assembly includes a plurality of lifting hooks, and each of the lifting hooks is driven by a translation mechanism to move closer to or farther from each other;

[0008] The translation mechanism includes a connecting seat located below the lifting seat, the connecting seat is movably connected to the lifting seat, and a sliding rod corresponding to each of the lifting hooks is connected to the connecting seat. The translation mechanism also includes a slider, the slider is slidably connected to the sliding rod, the lifting hook is connected to the slider, the slider is connected to the lifting seat through a connecting rod, and the two sides of the connecting rod are respectively hinged to the slider and the lifting seat.

[0009] Furthermore, a slide groove is provided on the slide rod, the slide block is mounted outside the slide rod, and the slide block is also connected to a guide shaft extending into the slide groove, and the guide shaft is slidably connected to the slide groove.

[0010] Furthermore, a retaining rod is provided between the connecting rod and the sliding rod, and two sides of the retaining rod are respectively hinged to the connecting rod and the sliding rod.

[0011] Furthermore, three lifting hooks are provided, and the three lifting hooks are distributed in a triangular lattice.

[0012] The advantages of the utility model are: the lifting seat, the lifting assembly and the translation mechanism are coordinated, and when the lifting seat is lifted up and down, the slider is driven by the connecting rod to move back and forth along the slide bar, and the flange can be clamped or disengaged in one step, the process is simpler, and the flange can be lifted more quickly.

[0013] The retaining rods arranged between the connecting rod and the sliding rod are used to cooperate with each other to limit the movement of the slider, thereby achieving self-centering and preventing the sliders from deviating in one direction at the same time, thereby affecting the subsequent clamping of the flange.

[0014] Three lifting hooks distributed in a triangular lattice are used to clamp and lift the flange, and the flange can be stably clamped using as few lifting hooks as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic diagram of the flange lifting tool of the utility model. DETAILED DESCRIPTION

[0017] The following embodiments may enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0018] like Figure 1 A flange lifting tool as shown, comprising

[0019] The lifting seat 1 has a lifting ear 2 connected to its upper end surface. The bottom end of the lifting ear 2 is welded and fixed to the lifting seat 1 . An ear hole 21 is formed at the upper portion of the lifting ear 2 .

[0020] The lifting assembly connected to the lifting seat 1 includes three lifting hooks 4, and the three lifting hooks 4 are distributed in a triangular lattice. The lifting lug 4 is an L-shaped structure formed by connecting a horizontal plate and a vertical plate. The three lifting hooks 4 distributed in a triangular lattice are used to clamp the flange, and the minimum number of lifting hooks 4 is used to achieve stable clamping of the flange.

[0021] Each lifting hook 4 is driven by a translation mechanism to move closer to or away from each other. The translation mechanism includes a connecting seat 5 located below the lifting seat. In this embodiment, the connecting seat 5 can adopt a nut or a bolt, and a sliding rod 6 corresponding to the lifting hooks is connected to the connecting seat 5. There are three sliding rods 6, which are distributed on the outside of the connecting seat 5, and one side of the sliding rod 6 is welded and fixed to the connecting seat 5. The center line of each sliding rod 6 passes through the central axis of the connecting seat 5. The lifting hook 4 slides along the sliding rod 6 to move closer to or away from the connecting seat 5. When the three lifting hooks 4 slide on the sliding rod 6 to move closer to the connecting seat 5, the three lifting hooks 4 cooperate together to clamp the flange workpiece. When the three lifting hooks 4 slide on the sliding rod 6 away from the connecting seat 5, the three lifting hooks 4 cooperate together to loosen the flange workpiece.

[0022] The slide bar 6 is a hollow square tube structure, and a slider 7 is installed on the slide bar 6 to move along the longitudinal direction of the slide bar 6. The slider 7 is a U-shaped structure formed by a horizontal plate and vertical plates vertically connected to both sides of the horizontal plate. The horizontal plate of the slider 7 is located below the slide bar 6, and the two vertical plates of the slider 7 are respectively located on both sides of the width direction of the slide bar 6. A slide groove 8 is opened on the slide bar 6, and the slide groove 8 is arranged along the longitudinal direction of the slide bar 6. A guide shaft 9 extending into the slide groove 8 is connected between the two vertical plates of the slider 7, and the guide shaft 9 reciprocates along the slide groove 8, thereby realizing the movement of the slider 7 along the slide bar 6.

[0023] The lifting hook 4 is connected to the bottom surface of the horizontal plate of the slider 7 and is welded and fixed to the slider 7. The openings formed by the L-shaped structures of the three lifting ears 4 and the bottom surface of the slider 7 are all facing the central axis direction of the lifting seat 1. The lifting hook 4 moves horizontally with the slider 7. The slider 7 is connected to the lifting seat 1 through a connecting rod 10, and the two sides of the connecting rod 10 are respectively hinged to the slider 7 and the lifting seat 1. A second sliding groove is provided on the upper end surface of the slide rod 6 for accommodating the connecting rod 10 to extend into and slide horizontally. After the connecting rod 10 extends into the second sliding groove, it is hinged to the slider 7 through the cooperation of bolts 11. Through holes are provided on the two vertical plates of the slider 7 for accommodating the bolts 11 to pass horizontally, and a through hole is provided at the bottom end of the connecting rod 10 for accommodating the bolts 11 to pass through.

[0024] During installation, the bolt 11 first passes through the through hole on one of the vertical plates of the slider 7, then passes through the slide groove 8 and extends into the inner cavity of the slide rod 6, then passes through the through hole at the bottom end of the connecting rod 10, then extends out of the slide groove 8 to the outside of the slide rod 6, and then passes through the through hole on the other vertical plate of the slider 7, and finally is fixed with the nut 12, thereby realizing the hinge between the connecting rod 10 and the slider 7.

[0025] A retaining rod 13 is also provided between the connecting rod 10 and the slide bar 6, and the two sides of the retaining rod 13 are respectively hinged to the middle section of the connecting rod 10 and the slide bar 6, and the hinge point between the retaining rod 13 and the slide bar 6 is located on the side of the slide bar 6 close to the connecting seat 5, and the hinge point between the retaining rod 13 and the connecting rod 10 is located in the middle section of the connecting rod 10. For the retaining rod 13 provided between the connecting rod 10 and the slide bar 6, the cooperation of each retaining rod 13 is utilized to limit the movement of the slide bar 7, so as to realize the self-centering of the slide bar 7, and avoid the occurrence of each slide bar 7 being deflected in one direction at the same time, which affects the subsequent clamping of the flange.

[0026] Working away from: When lifting the flange, first, each slider 7 is located on the side of the slide bar 6 away from the connecting seat 5, and the connecting seat 5 is placed on the upper end surface of the flange. Then, the lifting device directly hooks the ear hole 21 of the lifting ear 2 to drive the lifting seat 1 to move up. While the lifting seat 1 moves up, the slider 7 will be driven along the slide bar 6 to approach the connecting seat 5 through each connecting rod 10, and then drive the three lifting hooks 4 to approach the flange to be lifted, until the lifting hook 4 grabs the flange. As the lifting seat 1 continues to move up, the lifting hook 4 will drive the flange to move up together, thereby realizing the transportation of the flange.

[0027] When the flange lifting tool of the utility model is used to transport the flange, the lifting seat 1 is lifted up and down to directly drive the slider 7 to move horizontally, so that the lifting hook 4 can be stably stuck on the flange, avoiding the problem of repeatedly confirming the center of gravity when using the original hook, which saves time and effort.

[0028] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flange lifting tool, characterized in that: include A lifting seat, on which a lifting lug is connected; A lifting assembly connected to the lifting seat at a side away from the lifting ear, wherein the lifting assembly includes a plurality of lifting hooks, and each of the lifting hooks is driven by a translation mechanism to move closer to or farther from each other; The translation mechanism includes a connecting seat located below the lifting seat, the connecting seat is movably connected to the lifting seat, and a sliding rod corresponding to each of the lifting hooks is connected to the connecting seat. The translation mechanism also includes a slider, the slider is slidably connected to the sliding rod, the lifting hook is connected to the slider, the slider is connected to the lifting seat through a connecting rod, and the two sides of the connecting rod are respectively hinged to the slider and the lifting seat.

2. The flange lifting tool according to claim 1, characterized in that: The slide bar is provided with a slide groove, the slide block is sleeved outside the slide bar, and the slide block is also connected to a guide shaft extending into the slide groove, and the guide shaft is slidably connected to the slide groove.

3. The flange lifting tool according to claim 1, characterized in that: A retaining rod is also provided between the connecting rod and the sliding rod, and two sides of the retaining rod are respectively hinged to the connecting rod and the sliding rod.

4. The flange lifting tool according to claim 1, characterized in that: There are three lifting hooks, and the three lifting hooks are distributed in a triangular lattice.

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