Pipe hoisting device

Abstract

The invention discloses a pipe lifting device, and relates to the field of lifting slings, the pipe lifting device comprises a fixing plate, a second stepping motor is arranged in the center of the fixing plate, a cantilever beam plate is arranged in the middle height position of a vertical rod, and a first stepping motor is arranged at the top end of the cantilever beam plate; an output shaft of the first stepping motor and an output shaft of the second stepping motor coincide with the axis of the fixing plate in the vertical direction, and an assembling mechanism is arranged at the top end of the vertical rod. According to the lifting appliance, the lifting appliance is suspended and erected at the top end of the pipe through a locomotive suspension arm, the lifting appliance slowly falls down from the end opening of the top end of the pipe, the outer arc-shaped tiles are located on the outer side of the pipe opening, the inner arc-shaped tiles are located on the inner side of the pipe opening, and the three sets of inner arc-shaped tiles and outer arc-shaped tiles can be attached to the side walls of the pipe opening correspondingly; if an existing clamp clamps a pipeline with too large force, the side wall of the pipe can be extruded into an oval shape, and contour deformation cannot be caused when the clamp clamps the pipe wall.

Description

Technical Field

[0001] The invention relates to the field of hoisting tools, in particular to a pipe hoisting device. Background Art

[0002] With the development of industrial technology, modern lifting equipment has become more and more perfect. For some large-diameter devices with inner holes, such as coiled aluminum alloy pipes, it is difficult to clamp them with traditional lifting devices. In addition, for some aluminum alloy pipes with thin wall thickness, it is generally necessary to drill holes or use clamps to clamp them when using traditional lifting devices, which will damage the structure or surface of the product.

[0003] As proposed in Patent No. 202121578067.5, a lifting device suitable for pipes includes a bridge crane, a beam, a side-pull part, a PLC and a grabbing part; the beam is connected to the bridge crane; the side-pull part and the grabbing part are both arranged on the beam; there are multiple grabbing parts, which are equidistantly arranged on the beam along the center line of the beam; the grabbing part includes a connecting plate, a bracket and a grabbing mechanism; there are two grabbing mechanisms, which are symmetrically arranged on both sides of the end face of the connecting plate; the connecting plate is arranged on the beam through the bracket; there are two side-pull parts, which are respectively arranged at both ends of the beam. This utility model improves the lifting efficiency and safety of pipes;

[0004] The invention also has the following defects when in use. The device uses a clamp to fix the pipe. If the clamping force is too large, it will easily cause the pipe to deform or even break. If the clamping force is too small, it will easily cause the pipe to fall from the clamp. Therefore, this article intends to invent a lifting device for lifting this series of products, which does not require drilling to damage the product surface or clamping the product. Summary of the invention

[0005] The present invention provides a pipe lifting device, in which a locomotive boom suspends a lifting device at the top end of an upright pipe, and the lifting device slowly falls from the top end port of the pipe, with the outer arc-shaped tile being located at the outside of the pipe mouth and the inner arc-shaped tile being located at the inside of the pipe mouth. When the second stepper motor drives the second torsion plate to twist, the extrusion bevel on the second torsion plate drives three inner extrusion rods and the inner sliding block at the bottom thereof to expand outward, and when the first stepper motor drives the first torsion plate to twist, the extrusion bevel on the first torsion plate drives three outer extrusion rods and the outer sliding block at the bottom thereof to expand inward, and then the three groups of inner arc-shaped tiles and outer arc-shaped tiles are respectively attached to the side walls of the pipe mouth. Compared with the clamping of pipes in the prior art, if the previous clamps clamp the pipes too hard, the side walls of the pipes will be squeezed into an elliptical shape. The clamping of the present invention will not cause contour deformation to the pipe wall, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A pipe lifting device comprises a fixed plate, a second stepper motor is arranged at the center position of the fixed plate, a vertical pole is arranged at the top of the fixed plate, a cantilever plate is arranged at the middle height of the vertical pole, a first stepper motor is arranged at the top of the cantilever plate, the output shaft of the first stepper motor and the output shaft of the second stepper motor respectively overlap with the axis of the fixed plate in the vertical direction, and an assembly mechanism is arranged at the top of the vertical pole; a second torsion plate is arranged on the output shaft of the second stepper motor, a first torsion plate is arranged on the output shaft of the first stepper motor, and a first torsion plate is arranged on the first torsion plate and the second torsion plate respectively There is an avoidance groove mechanism matching the vertical rod; three annular arrays of extrusion bevel grooves are respectively arranged on the first torsion plate and the second torsion plate, and three annular arrays of forked guide rods are arranged on the outer side of the fixed plate, and each of the forked guide rods is slidably sleeved with an inner slider and an outer slider, and the outer slider is located on the outer side of the inner slider, and an inner extrusion rod is arranged at the top end of the inner slider, and an outer extrusion rod is arranged at the top end of the outer slider, the inner extrusion rod is inserted into the three extrusion bevel grooves on the side wall of the second torsion plate, and the outer extrusion rod is inserted into the three extrusion bevel grooves on the side wall of the first torsion plate; the bottom ends of the inner slider and the outer slider are both provided with a clamping shoe mechanism.

[0008] Furthermore, the assembly mechanism includes an assembly flange at the top end of the vertical pole, and the assembly flange is fixed to the locomotive boom by bolts.

[0009] Furthermore, the avoidance groove mechanism includes a first avoidance arc groove at the top of the first torsion plate and a second avoidance arc groove at the top of the second torsion plate, the vertical rod passes through the middle of the first avoidance arc groove and the second avoidance arc groove, and the width of the first avoidance arc groove and the second avoidance arc groove is greater than the diameter of the vertical rod.

[0010] Furthermore, six annular array plug-in interfaces are arranged on the outer side of the fixing plate, the inner ends of the forked guide rods are inserted into the plug-in interfaces, and the ends of the forked guide rods are plugged into the plug-in interfaces via pin rods.

[0011] Furthermore, the clamping shoe mechanism includes an inner drooping rod at the bottom end of the inner slider, the bottom end of the inner drooping rod is provided with an inner arc-shaped shoe, and an outer drooping rod at the bottom end of the outer slider, the bottom end of the outer drooping rod is provided with an outer arc-shaped shoe.

[0012] Furthermore, the outer curved surface of the inner curved tile and the inner curved surface of the outer curved tile are both provided with air machines, and the inner curved surface of the inner curved tile and the outer curved surface of the outer curved tile are both provided with pressure holes, and an air bag is provided inside each of the pressure holes. The air pressure inside the air bag is completely contracted inside the pressure hole when in a negative pressure state, and the output ends of the two air machines are provided with forked air pipes respectively connected to each air bag.

[0013] As a preferred technical solution of a pipe lifting device of the present invention,

[0014] The present invention has the following benefits:

[0015] Firstly, the locomotive boom suspends the hanger at the top of the upright pipe, and the hanger slowly falls from the top end of the pipe, with the outer arc-shaped tile at the outside of the pipe mouth and the inner arc-shaped tile at the inside of the pipe mouth. When the second stepper motor drives the second torsion plate to twist, the extrusion bevel on the second torsion plate drives the three inner extrusion rods and the inner slider at the bottom to expand outward. When the first stepper motor drives the first torsion plate to twist, the extrusion bevel on the first torsion plate drives the three outer extrusion rods and the outer slider at the bottom to expand inward, and then the three groups of inner arc-shaped tiles and outer arc-shaped tiles will be respectively attached to the side walls of the pipe mouth. Compared with the clamping pipe of the prior art, if the previous clamp clamps the pipe too hard, the side wall of the pipe will be squeezed into an ellipse. The clamping of the present invention will not cause contour deformation to the pipe wall.

[0016] Secondly, when the air machine inflates all the airbags, the airbags will expand and bulge out from the pressure hole, and then the airbags will squeeze the inner and outer walls of the pipe. The pressure on the side walls of the pipe is uniform. Compared with the pipe clamping device in the prior art, the previous pipe clamps exert uneven pressure on the pipe, which will scratch the side walls of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front view structure of a pipe lifting device.

[0018] Figure 2 The figure is a schematic diagram of the side structure of a pipe lifting device.

[0019] Figure 3 The present invention is a structural schematic diagram of a neutral pole of a pipe lifting device.

[0020] Figure 4 The present invention is a structural schematic diagram of a fixed plate in a pipe lifting device.

[0021] Figure 5 The present invention is a structural schematic diagram of an insertion interface in a pipe lifting device.

[0022] Figure 6 The figure is a schematic diagram of the structure of an air machine in a pipe lifting device.

[0023] Figure 7 The figure is a schematic diagram of the structure of a pressure hole in a pipe lifting device.

[0024] In the figure: assembly flange 1, vertical pole 101, cantilever beam plate 102, first stepper motor 103, first torsion plate 2, first avoidance arc groove 201, fixed plate 3, forked guide rod 301, plug interface 302, second torsion plate 4, second avoidance arc groove 401, inner slider 5, inner drooping rod 501, inner extrusion rod 502, inner arc-shaped tile 503, outer slider 6, outer drooping rod 601, outer extrusion rod 602, outer arc-shaped tile 603, second stepper motor 7, extrusion inclined groove 8, air machine 9, pressure hole 10. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0027] See also Figure 1-7A pipe lifting device, characterized in that: it includes a fixed plate 3, a second stepper motor 7 is arranged at the center of the fixed plate 3, a vertical pole 101 is arranged at the top of the fixed plate 3, a cantilever plate 102 is arranged at the middle height of the vertical pole 101, a first stepper motor 103 is arranged at the top of the cantilever plate 102, the output shaft of the first stepper motor 103 and the output shaft of the second stepper motor 7 are respectively overlapped with the axis of the fixed plate 3 in the vertical direction, and an assembly mechanism is arranged at the top of the vertical pole 101; the second stepper motor 103 is arranged at the top of the cantilever plate 102, and the output shaft of the first stepper motor 103 and the output shaft of the second stepper motor 7 are respectively overlapped with the axis of the fixed plate 3 in the vertical direction, and an assembly mechanism is arranged at the top of the vertical pole 101; A second torsion plate 4 is arranged on the output shaft of the motor 7, a first torsion plate 2 is arranged on the output shaft of the first stepper motor 103, and avoidance groove mechanisms matching the vertical rod 101 are arranged on the first torsion plate 2 and the second torsion plate 4 respectively; three annular arrays of extrusion chute 8 are arranged on the first torsion plate 2 and the second torsion plate 4 respectively, and three annular arrays of forked guide rods 301 are arranged on the outer side of the fixed plate 3, and each of the forked guide rods 301 is slidably sleeved with an inner slider 5 and an outer slider 6, and the outer slider 6 is located on the outer side of the inner slider 5. , the top of the inner slider 5 is provided with an inner extrusion rod 502, the top of the outer slider 6 is provided with an outer extrusion rod 602, the inner extrusion rod 502 is inserted into the three extrusion chute 8 on the side wall of the second torsion plate 4, and the outer extrusion rod 602 is inserted into the three extrusion chute 8 on the side wall of the first torsion plate 2; the bottom ends of the inner slider 5 and the outer slider 6 are both provided with a clamping shoe mechanism, the locomotive boom suspends the hanger at the top of the vertical pipe, and the hanger slowly falls from the top end of the pipe. When the second stepping motor 7 drives the second torsion plate 4 to twist, the second The extrusion bevel 8 on the torsion plate 4 drives the three inner extrusion rods 502 and the inner slider 5 at the bottom thereof to expand outward. When the first stepper motor 103 drives the first torsion plate 2 to twist, the extrusion bevel 8 on the first torsion plate 2 drives the three outer extrusion rods 602 and the outer slider 6 at the bottom thereof to expand and extrude inward, and then the three groups of clamping shoe mechanisms will respectively fit on the side walls of the pipe mouth. Compared with the clamping of pipes in the prior art, if the previous clamps clamp the pipes too hard, the side walls of the pipes will be squeezed into an elliptical shape. The clamping of the present invention will not cause contour deformation to the pipe wall.

[0028] The assembly mechanism includes an assembly flange 1 at the top of the vertical pole 101, and the assembly flange 1 is fixed to the locomotive boom by bolts. The vertical pole 101 serves as the central beam of the sling. The vertical pole 101 is installed on the car through the assembly flange 1, and the sling can also be easily disassembled for transportation or installed on other locomotive booms.

[0029] The avoidance groove mechanism includes a first avoidance arc groove 201 at the top of the first torsion plate 2 and a second avoidance arc groove 401 at the top of the second torsion plate 4. The vertical pole 101 passes through the middle of the first avoidance arc groove 201 and the second avoidance arc groove 401. The width of the first avoidance arc groove 201 and the second avoidance arc groove 401 is greater than the diameter of the vertical pole 101. The first avoidance arc groove 201 and the second avoidance arc groove 401 can provide avoidance space for the vertical pole 101. The edges of the first avoidance arc groove 201 and the second avoidance arc groove 401 can also limit the torsion limit of the first torsion plate 2 and the second torsion plate 4.

[0030] The outer side of the fixed plate 3 is provided with six annular array plug-in ports 302, the inner ends of the forked guide rods 301 are inserted into the plug-in ports 302, and the ends of the forked guide rods 301 are plugged into the plug-in ports 302 through pin rods. Three more forked guide rods 301 can be installed on the six annular array plug-in ports 302 on the outer side of the fixed plate 3, and six groups of clamping shoe mechanisms can be formed on the outer side of the fixed plate 3. The staff can modify the equipment according to the clamping requirements of the pipe.

[0031] The clamping shoe mechanism includes an inner drooping rod 501 at the bottom end of the inner sliding block 5, and an inner arc-shaped shoe 503 is arranged at the bottom end of the inner drooping rod 501; an outer drooping rod 601 at the bottom end of the outer sliding block 6, and an outer arc-shaped shoe 603 is arranged at the bottom end of the outer drooping rod 601; the inner drooping rod 501 and the inner arc-shaped shoe 503 at its bottom are expanded and fitted on the inner side wall of the pipe, and the outer drooping rod 601 and the outer arc-shaped shoe 603 at its bottom are closed and fitted on the outer side wall of the pipe, thereby achieving the effect of clamping the side wall of the pipe.

[0032] The outer arc surface of the inner arc tile 503 and the inner arc surface of the outer arc tile 603 are both provided with air machines 9, and the inner arc surface of the inner arc tile 503 and the outer arc surface of the outer arc tile 603 are both provided with pressure holes 10. An air bag is provided inside each of the pressure holes 10. The air pressure inside the air bag is completely contracted inside the pressure hole 10 when in a negative pressure state. The output ends of the two air machines 9 are provided with forked air pipes respectively connected to each air bag. When the air machine 9 inflates all the air bags, the air bags will swell and expand out of the pressure hole 10, and then the air bags will squeeze the inner and outer side walls of the pipe, and the pressure on the side walls of the pipe is uniform. Compared with the pipe clamping device in the prior art, the previous pipe clamp has uneven pressure on the pipe, which will scratch the side wall of the pipe. The air bag of the present invention has a larger fitting area relative to the side wall of the pipe, and the air bag pressure is also relatively uniform.

[0033] Working principle: the locomotive crane arm suspends the hanger at the top of the vertical pipe, and the hanger slowly falls from the top end of the pipe. When the second stepper motor 7 drives the second torsion plate 4 to twist, the extrusion bevel 8 on the second torsion plate 4 drives the three inner extrusion rods 502 and the inner slider 5 at its bottom to expand outward. When the first stepper motor 103 drives the first torsion plate 2 to twist, the extrusion bevel 8 on the first torsion plate 2 drives the three outer extrusion rods 602 and the outer slider 6 at its bottom to expand and extrude inward, and then the three groups of clamping shoe mechanisms will be respectively attached to the side walls of the pipe mouth. Compared with the clamping pipe of the prior art, if the previous clamps clamp the pipe too hard, the side walls of the pipe will be squeezed into an elliptical shape. The clamping of the present invention will not cause contour deformation to the pipe wall. The vertical pole 101 serves as the central beam of the hanger. The vertical pole 101 is installed on the car through the assembly flange 1, and then the hanger can also be easily disassembled for transportation or installed on other locomotive crane arms. The first avoidance arc groove 201 and the second avoidance arc groove 202 are used to prevent the pipe from being clamped. The arc groove 401 can provide an escape space for the vertical pole 101, and the edges of the first escape arc groove 201 and the second escape arc groove 401 can also limit the torsion limit of the first torsion plate 2 and the second torsion plate 4, so that the outer side of the fixed plate 3 can form six sets of clamping tile mechanisms. The staff modifies the equipment according to the clamping requirements of the pipe. The inner drooping rod 501 and the inner arc tile 503 at its bottom are expanded and fitted on the inner side wall of the pipe, and the outer drooping rod 601 and the outer arc tile 603 at its bottom are expanded and fitted on the inner side wall of the pipe. The airbags 9 are closed and fit on the outer wall of the pipe, achieving the effect of clamping the side wall of the pipe. When the air machine 9 inflates all the airbags, the airbags will swell and expand out from the pressure hole 10, and then the airbags will squeeze the inner and outer walls of the pipe. The pressure on the side wall of the pipe is uniform. Compared with the pipe clamping device in the prior art, the previous pipe clamps exerted uneven pressure on the pipe, which would scratch the side wall of the pipe. The airbags of the present invention have a larger fitting area relative to the side wall of the pipe, and the airbag pressure is also more uniform.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe lifting device, characterized in that: It comprises a fixed plate (3), a second stepper motor (7) is arranged at the center of the fixed plate (3), a vertical pole (101) is arranged at the top of the fixed plate (3), a cantilever plate (102) is arranged at the middle height of the vertical pole (101), a first stepper motor (103) is arranged at the top of the cantilever plate (102), the output shaft of the first stepper motor (103) and the output shaft of the second stepper motor (7) respectively overlap with the axis of the fixed plate (3) in the vertical direction, and an assembly mechanism is arranged at the top of the vertical pole (101); A second torsion plate (4) is arranged on the output shaft of the second stepper motor (7), a first torsion plate (2) is arranged on the output shaft of the first stepper motor (103), and avoidance groove mechanisms matching the vertical rod (101) are respectively arranged on the first torsion plate (2) and the second torsion plate (4); The first torsion plate (2) and the second torsion plate (4) are respectively provided with three annular arrays of extrusion chute grooves (8); the outer side of the fixed plate (3) is provided with three annular arrays of bifurcated guide rods (301); each of the bifurcated guide rods (301) is slidably sleeved with an inner slider (5) and an outer slider (6); the outer slider (6) is located on the outer side of the inner slider (5); an inner extrusion rod (502) is provided at the top end of the inner slider (5); an outer extrusion rod (602) is provided at the top end of the outer slider (6); the inner extrusion rod (502) is inserted into the three extrusion chute grooves (8) on the side wall of the second torsion plate (4); and the outer extrusion rod (602) is inserted into the three extrusion chute grooves (8) on the side wall of the first torsion plate (2); The bottom ends of the inner sliding block (5) and the outer sliding block (6) are both provided with a clamping shoe mechanism.

2. A pipe lifting device according to claim 1, characterized in that: The assembly mechanism comprises an assembly flange (1) at the top end of a vertical pole (101), and the assembly flange (1) is fixed to the locomotive boom by means of bolts.

3. A pipe lifting device according to claim 1, characterized in that: The avoidance groove mechanism comprises a first avoidance arc groove (201) at the top of the first torsion plate (2) and a second avoidance arc groove (401) at the top of the second torsion plate (4); the vertical rod (101) passes through the middle of the first avoidance arc groove (201) and the second avoidance arc groove (401); and the width of the first avoidance arc groove (201) and the second avoidance arc groove (401) is greater than the diameter of the vertical rod (101).

4. A pipe lifting device according to claim 1, characterized in that: The outer side of the fixing plate (3) is provided with six annular array plug-in ports (302), the inner ends of the forked guide rods (301) are inserted into the plug-in ports (302), and the ends of the forked guide rods (301) are plugged into the plug-in ports (302) via pins.

5. The pipe lifting device according to claim 1, characterized in that: The clamping shoe mechanism comprises an inner drooping rod (501) at the bottom end of the inner sliding block (5), the bottom end of the inner drooping rod (501) being provided with an inner arc-shaped shoe (503), and an outer drooping rod (601) at the bottom end of the outer sliding block (6), the bottom end of the outer drooping rod (601) being provided with an outer arc-shaped shoe (603).

6. A pipe lifting device according to claim 5, characterized in that: The outer curved surface of the inner curved tile (503) and the inner curved surface of the outer curved tile (603) are both provided with air machines (9), and the inner curved surface of the inner curved tile (503) and the outer curved surface of the outer curved tile (603) are both provided with pressure holes (10), and an air bag is provided inside each of the pressure holes (10). When the air pressure inside the air bag is in a negative pressure state, the air pressure inside the air bag is completely contracted inside the pressure hole (10), and the output ends of the two air machines (9) are provided with bifurcated air pipes respectively connected to each air bag.

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