Cylinder hanging and clamping tool

Abstract

The utility model belongs to the technical field of lifting tools, and particularly relates to a cylinder lifting and clamping tool which comprises a lifting lug and two lifting arms hinged to the lifting lug. Clamping arms are hinged to the lower ends of the suspension arms, and the two clamping arms on different suspension arms are symmetrically arranged in a crossed mode and hinged through a second hinge shaft; a clamping jaw is arranged at the lower end of the intersection of the two clamping arms hinged to the different suspension arms, the clamping jaw is rotationally connected with the clamping arms through a rotating shaft, and the rotating shaft is arranged in the horizontal direction and is perpendicular to the first hinge shaft; the clamping jaw is provided with a clamping face, and the clamping face is matched with the peripheral face of the cylinder in shape. The two clamping arms which are symmetrically crossed and hinged to each other are arranged to drive the two clamping jaws to clamp the barrel, the clamping faces matched with the shape of the peripheral face of the barrel are arranged on the clamping jaws, the barrel is clamped through the tool and the dead weight of the barrel, and the deformation degree of the barrel is reduced; one end of the barrel is clamped by arranging the clamping jaw rotationally connected to the clamping arm, so that the barrel is overturned while being hoisted by the hoisting device, the hoisting device is convenient and rapid, and the hoisting efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoisting tooling, and in particular relates to a cylinder hoisting clamping tooling. Background Art

[0002] Technical fields such as chemical industry, metallurgy and wind power generation often involve the assembly and construction of large-diameter cylindrical equipment such as blast furnace shells, blast furnace shells, vertical storage tanks and tower-type reaction vessels. The diameter of such cylindrical shells is generally 1.5m-10m, the thickness is between 5mm-20mm, and the total assembly height varies from 4m to 40m. Due to its large size and weight, in order to facilitate production, transportation and assembly, such equipment is usually prefabricated into multiple sections of cylinders. In order to avoid road height restrictions, single-section cylinders are generally placed horizontally on transport vehicles and transported to the construction site. Finally, multiple single-section cylinders are coaxially assembled from bottom to top to form an integral device. During this construction process, a crane is required to lift the single-section cylinders to the installation position in turn for assembly. During the lifting process, multiple lifting clamps are generally used to clamp the inner and outer walls of the cylinder ends to fix the cylinder. Due to the small thickness of the cylinder, uneven distribution of lifting clamps and unbalanced force on the cylinder, the end of the cylinder is very easy to deform during the lifting process. The end of the cylinder is generally equipped with an assembly structure connected to another section of the cylinder, which is also easy to deform, affecting the subsequent assembly operation of the cylinder.

[0003] The utility model patent with the publication number CN219792130U discloses a large cylinder hoisting tool, which includes a horizontal disk and a support rod welded at the center of the top of the horizontal disk, a first lifting lug is welded at the top of the support rod, six main beams are evenly welded at the bottom of the horizontal disk, a first reinforcing rod is welded in the middle of one end of the six main beams, and a second lifting lug is welded at the bottom of one end of the six main beams. When hoisting the cylinder, the cylinder is fixed with a lifting clamp and then hooked on the second lifting lug to ensure that the cylinder is evenly stressed during the hoisting process and to avoid deformation of the cylinder. However, the tool cannot avoid deformation of the cylinder wall caused by factors such as too thin cylinder wall and excessive clamping force of the tool.

[0004] The utility model patent with the publication number CN216190296U discloses a graphite cylinder hoisting tool, which includes a first tool semicircle and a second tool semicircle assembled into a complete circle by a pin shaft, and a plurality of lifting hooks for threading a steel wire rope are installed on the first tool semicircle and the second tool semicircle, and the inner sides of the first tool semicircle and the second tool semicircle are provided with an inner bevel that matches the outer bevel of the graphite cylinder. The graphite cylinder is provided with an outer bevel, and during hoisting, the inner bevel of the tool contacts the outer bevel of the graphite cylinder, and the hoisting tool is clamped on the outer circumference of the graphite cylinder. Although this tool can effectively avoid deformation of the cylinder structure, it is only applicable to cylinders with protrusions on the outer circumference of the cylinder, and cannot be used to hoist cylinders with smooth outer circumferences. In addition, when the tooling is hoisted, the tooling set needs to be placed on the outside of the cylinder, and the cylinder at the construction site is generally lying horizontally on the table. If the tooling set is to be placed on the outside, the cylinder needs to be lifted. The hoisting process is cumbersome, wastes manpower, and affects the hoisting efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a cylinder hoisting clamping tool, which can reduce the deformation degree of the cylinder body, complete the turning of the cylinder body during the hoisting process, and improve the hoisting efficiency.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a cylindrical hanging clamp tooling, comprising a hanging ear and two hanging arms, the upper ends of the two hanging arms are hinged to the hanging ear through a first hinge shaft, and the first hinge shaft is arranged in the horizontal direction;

[0007] The lower end of the boom is hinged with a clamping arm, and the clamping arm is hinged to the lower end of the boom through a second hinge shaft;

[0008] The two clamping arms hinged on different suspension arms are symmetrically arranged crosswise and hinged to each other through the second hinge axis; the second hinge axis is parallel to the first hinge axis;

[0009] A clamping claw is provided at the lower end of the intersection of two clamping arms hinged on different said booms, and said clamping claw is rotatably connected with said clamping claw via a rotating shaft, and said rotating shaft is arranged in the horizontal direction and perpendicular to said first hinge axis;

[0010] The clamping jaws are provided with a clamping surface, and the clamping surface is adapted to the shape of the outer peripheral surface of the cylinder.

[0011] Furthermore, the two lifting arms are hinged to the lifting ears via the same first hinge shaft.

[0012] Furthermore, it also includes an opening and closing card hinged on the lifting ear through the first hinge shaft, and the opening and closing card is provided with a fixed clamping portion;

[0013] The suspension arm is provided with a clamping groove for clamping with the fixed clamping part;

[0014] The first hinge shaft is a fastening bolt, and the end of the fastening bolt is threadedly connected with a fastening nut;

[0015] The fixed clamping portion is clamped in the clamping groove by adjusting the position of the opening and closing clamp in the axial direction of the fastening bolt.

[0016] Furthermore, it also includes a partition located between the two boom angles.

[0017] Furthermore, the partition is a partition bar fixedly mounted on the opening and closing card, and the axis of the partition bar is parallel to the axis of the first hinge shaft;

[0018] The partition bar cooperates with the fixed clamping portion to ensure that the angle between the two suspension arms on a plane perpendicular to the first hinge axis remains unchanged.

[0019] Furthermore, a rubber protective layer is provided on the clamping surface.

[0020] Furthermore, a crossbeam, a transfer arm and a parallel connecting rod are provided below the intersection of two clamping arms which are hinged on different said booms and arranged symmetrically and crosswise with each other;

[0021] The two ends of the cross beam are respectively hinged to the clamp arm through a third hinge shaft, the transfer arm is located below the cross beam and is hinged to the clamp arm through a fourth hinge shaft, the two ends of the parallel connecting rod are respectively hinged to the cross beam and the transfer arm through a fifth hinge shaft, and the cross beam, the transfer arm, the parallel connecting rod and the lower part of the clamp arm form a parallelogram frame structure; the third hinge shaft, the fourth hinge shaft and the fifth hinge shaft are arranged in parallel with the first hinge shaft;

[0022] The clamping claw is rotatably connected to the transfer arm via the rotating shaft.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows: providing a cylindrical hoisting clamping tool, by setting two symmetrically crossed and mutually hinged clamping arms to drive two clamping claws to clamp the cylinder, using the deadweight of the tool and the cylinder to clamp the cylinder, reducing the deformation of the cylinder; by setting a clamping surface that matches the shape of the outer peripheral surface of the cylinder on the clamping claw to clamp the outer peripheral surface of the cylinder, increasing the contact area between the clamping claw and the cylinder, reducing the deformation of the cylinder during the hoisting process, and ensuring the smoothness of the subsequent installation process; by setting a clamping claw that is rotatably connected to the clamping arm to clamp one end of the cylinder, the utility model can complete the flipping of the cylinder while hoisting the cylinder, which is convenient and fast, saves manpower, and improves the hoisting efficiency. By setting an opening and closing card to ensure that the relative positions of the two lifting arms, two clamping arms and two clamping claws are fixed in the non-working state, it is convenient to transport and store the tooling and avoid damage to the tooling. By setting a rubber protective layer on the clamping surface, the friction between the clamping claw and the cylinder is increased to avoid scratching or clamping the cylinder with the clamping claw. By setting up a parallelogram frame structure composed of a crossbeam, a transfer arm, a parallel connecting rod and the lower part of the clamping arm, the clamping arm drives the transfer arm to move horizontally and linearly, and the transfer arm drives the two clamping claws to move linearly in the horizontal direction and approach each other, so that the two clamping claws are evenly clamped on the outer circumference of the cylinder, ensuring that the cylinder is subjected to balanced force during the lifting process, thereby improving the safety factor of the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of another embodiment of the utility model;

[0026] Figure 3 yes Figure 2 A schematic diagram of the structure of the initial state during the lifting process of the embodiment;

[0027] Figure 4 yes Figure 2 A schematic diagram of the structure of the initial state during the lifting process of the embodiment;

[0028] Figure 5 It is a schematic diagram of the assembly structure of the boom and the opening and closing card;

[0029] Figure numerals: 1-lifting ear; 2-lifting arm; 21-opening and closing card; 211-fixed clamping part; 212-partitioning part; 22-clamping groove; 3-clamping arm; 34-rotating shaft; 4-clamping claw; 41-clamping surface; 42-rubber protective layer; 5-crossbeam; 6-transfer arm; 7-parallel connecting rod; 81-first hinge axis; 811-fastening bolt; 812-fastening nut; 82-second hinge axis; 83-third hinge axis; 84-fourth hinge axis; 85-fifth hinge axis; 9-cylinder. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] As attached Figure 1-5 As shown, a cylindrical lifting clamp tool comprises a lifting ear 1 and two lifting arms 2, the upper ends of the two lifting arms 2 are hinged to the lifting ear 1 through a first hinge axis 81, and the first hinge axis 81 is arranged in the horizontal direction; the lower end of the lifting arm 2 is hinged with a clamping arm 3, and the clamping arm 3 is hinged to the lower end of the lifting arm 2 through a second hinge axis 82; the two clamping arms 3 hinged on different lifting arms 2 are symmetrically cross-arranged and hinged to each other through the second hinge axis 82; the second hinge axis 82 is parallel to the first hinge axis 81; a clamping claw 4 is provided at the lower end of the intersection of the two clamping arms 3 hinged on different lifting arms 2, and the clamping claw 4 is rotatably connected to the clamping claw 4 through a rotating shaft 34, and the rotating shaft 34 is arranged in the horizontal direction and perpendicular to the first hinge axis; a clamping surface 41 is provided on the clamping claw 4, and the clamping surface 41 is adapted to the shape of the outer circumferential surface of the cylinder 9. “The clamping surface 41 is adapted to the shape of the outer circumferential surface of the cylinder 9” means that the curvature of the clamping surface 41 is the same as the curvature of the outer circumferential surface of the cylinder 9. When the cylinder 9 is hoisted, the clamping surface 41 is coaxially arranged with the cylinder 9 and completely fits on the outer circumferential surface of the cylinder 9.

[0032] Before lifting, the cylinder 9 is placed horizontally on the table, and the central axis of the cylinder 9 is parallel to the table. The lifting rope on the crane is connected to the lifting ear 1, so that the tool is located at one end of the cylinder 9, and the two clamping jaws 4 are separated and located on the table on both sides of the cylinder 9. During clamping, the crane pulls the lifting ear 1 upward, and under the action of the gravity of the clamping arm 3 and the clamping jaw 4, the two lifting arms 2 swing downward around the first hinge shaft 81 and approach each other, and the lifting arm 2 drives the upper ends of the two clamping arms 3 to rotate relative to each other around the second hinge shaft 2 and approach each other, and the lower ends of the two clamping arms 3 rotate relative to each other around the second hinge shaft 2 and approach each other, and the lower ends of the clamping arms 3 drive the two clamping jaws 4 to approach each other and clamp on the cylinder 9, and the clamping surface 41 is completely in contact with the outer peripheral surface of the cylinder 9. Continue to pull the lifting ear 1 upwards. Under the action of the deadweight of the cylinder 9, the cylinder 9 pulls down the clamping jaws 4, the clamping arms 3 and the boom 2, so that the two booms 2 tend to approach each other, the upper ends of the two clamping arms 3 that are symmetrically arranged crosswise tend to approach each other, and the lower ends of the two clamping arms 3 that are symmetrically arranged crosswise tend to approach each other, thereby making the two clamping jaws 4 tend to approach each other to clamp the cylinder 9. Finally, under the clamping force of the clamping jaws 4, the static friction between the clamping jaws 4 and the cylinder 9 is greater than the gravity of the cylinder 9 itself, and the cylinder 9 is completely detached from the table and hoisted into the air. The clamping force on the cylinder 9 is positively correlated with the deadweight of the cylinder 9. Because this tooling only clamps one end of the cylinder 9, during the lifting process, the clamping jaws 4 rotate around the rotating shaft 34 under the action of the gravity of the cylinder 9 itself, and the cylinder 9 rotates synchronously with the clamping jaws 4. The cylinder 9 is flipped from lying horizontally on the table to being perpendicular to the table, that is, the axis of the cylinder 9 is flipped from being parallel to the table to being perpendicular to the table, and the flipping of the cylinder 9 is completed during the lifting process of the cylinder 9.

[0033] The utility model clamps the cylinder body 9 by providing two symmetrically crossed and mutually hinged clamping arms 3 to drive two clamping claws 4 arranged in pairs, clamps the cylinder body 9 by using the deadweight of the tooling and the deadweight of the cylinder body 9, and controls the clamping force applied by the tooling on the cylinder body 9 by using the deadweight of the cylinder body 9, thereby ensuring that the cylinder body 9 will not be deformed by excessive clamping force; clamping surfaces 41 adapted to the shape of the outer peripheral surface of the cylinder body 4 are provided on the clamping claws 4 to clamp the outer peripheral surface of the cylinder body 9, thereby increasing the contact area between the clamping claws 4 and the cylinder body 9, ensuring that the outer peripheral surface of the cylinder body 9 is subjected to balanced force, reducing the degree of deformation of the cylinder body 9 during the hoisting process, and ensuring smooth subsequent installation procedures; and providing a clamping claw 4 rotatably connected to the clamping arm 3 to clamp one end of the cylinder body 9, thereby enabling the utility model to complete the flipping of the cylinder body 9 while hoisting the cylinder body 9, which is convenient and quick, saves manpower, and improves hoisting efficiency.

[0034] The lifting ear 1 is used to connect the entire tooling to the crane, which can be a lifting ring structure or a hook structure, and is generally connected to the crane hook. The boom 2 can rotate around the first hinge axis 81 and drive the clamping arm 3 to rotate around the second hinge axis 82, thereby driving the two ends of the two clamping arms 3 that are symmetrically cross-hinged to move closer or farther from each other. The rotation axes of the two booms 2 may or may not coincide. If the hinge axes of the two booms 2 do not coincide, there will be a gap between the two booms 2 in the vertical state, resulting in a gap between the two clamping claws 4, making it impossible to clamp a cylinder 9 with a small diameter. Preferably, the two booms 2 are hinged to the lifting ear 1 through the same first hinge axis 81, so that the angle between the two booms 2 on the plane perpendicular to the rotation axis can be small enough, and the minimum value can be 0°. This tooling can be used to clamp and hoist cylinders 9 with different diameters.

[0035] In order to prevent the two arms 2 from approaching each other under the action of external forces such as wind when the tooling is in a non-working state, which may cause the two clamps 4 to collide with each other and cause damage to the clamps 4, preferably, it also includes an opening and closing card 21 for fixing the relative positions of the two arms 2 to ensure that the relative positions of the two arms 2, the two clamps 3 and the two clamps 4 are fixed when the tooling is in a non-working state, which is convenient for the transportation and storage of the tooling and avoids damage to the tooling. The opening and closing card 21 has a variety of structural forms, which can be a herringbone structure clamped on the two arms 2, or a structure such as a fastening screw that fastens the arms to the lifting ears 1; the opening and closing card 21 can be installed on the arms 2 or on the lifting ears 1. Preferably, the opening and closing card 21 is hinged to the lifting ear 1 through the first hinge shaft 81, and a fixed clamping portion 211 is provided on the opening and closing card 21; the lifting arm 2 is provided with a clamping groove 22 for clamping with the fixed clamping portion 211; the first hinge shaft 81 is a fastening bolt 811, and the end of the fastening bolt 811 is threadedly connected with a fastening nut 812; the fixed clamping portion 211 is clamped in the clamping groove 22 by adjusting the axial position of the opening and closing card 21 on the fastening bolt 811. When the tool is in a non-working state, the position of the opening and closing card 21 on the axial direction of the fastening bolt 811 is adjusted so that the fixed clamping part 211 is clamped in the clamping groove 22 to fix the relative position of the two hanging arms 2, and finally the fastening nut 812 is tightened to prevent the fixed clamping part 211 from slipping out of the clamping groove 22; when the tool is in a working state, the fastening nut 812 is rotated outwards to adjust the position of the opening and closing card 21 on the axial direction of the bolt 811 so that the fixed clamping part 211 slips out of the clamping groove 22, and at this time, the two hanging arms 2 can rotate relative to each other around the first hinge shaft 81. The structure is simple and easy to operate.

[0036] Preferably, it also includes a partition 212 located between the angles of the two booms 2, so that the angle between the two booms 2 in the naturally drooping state during operation is not 0°, thereby preventing the two jaws 4 from contacting each other. If the two jaws 4 are in contact, it is necessary to manually separate the two jaws 4 and place them on both sides of the cylinder 9 when clamping the cylinder 9. The partition 212 can be installed on the lifting ear 1 or on the boom 2, and can be hinged, welded, or connected by bolts. The tooling of this structure only needs to place the jaws 4 on both sides of the cylinder 1 and then continue to lower it, and the jaws 4 can be relatively far away to form a clamping space, which saves manpower and is safe and quick.

[0037] As a further preference, Figure 5 As shown, the partition 212 is a partition bar fixedly mounted on the opening and closing card 21, and the axis of the partition bar is parallel to the axis of the first hinge shaft 81; the partition bar is used in conjunction with the fixed clamping portion 211 to keep the angle between the two booms 2 in a plane perpendicular to the first hinge shaft 81 unchanged. When the tool is in a non-working state, the fixed clamping part 211 is clamped in the clamping groove 22 on one of the booms 2, and the partition bar abuts against the inner side surface of the other boom 2. The partition bar cooperates with the fixed clamping part 211 to keep the angle between the two booms 2 unchanged on the plane perpendicular to the first hinge axis 81. When the tool is in a working state, the opening and closing card 21 moves along the first hinge axis 81 to make the fixed clamping part 211 escape from the clamping groove 22 on the boom 2, and the partition bar is still located between the two booms 2. The opening and closing card 21 rotates around its rotation axis under the eccentric force of the partition bar until the partition bar is located at the angle bisector of the angle between the two booms 2 arranged in the up-down direction. At this time, the angle between the two booms 2 is adjustable. The partition 212 is arranged on the opening and closing card 21, which has a simple structure and is easy to use.

[0038] The rotating shaft 2 is used to drive the clamping jaw 3 to rotate relative to the clamping arm 4, and is generally connected to the clamping arm 3 through a bearing seat. The rotating shaft 2 and the clamping jaw 4 can be an integral structure formed in one piece, or two independent parts connected together by bolt connection or welding. The clamping surface 41 can be a whole arc surface, or it can be composed of multiple arc surfaces arranged at intervals, and the axes of the multiple arc surfaces are coaxial. Preferably, a rubber protective layer 42 is provided on the clamping surface 41. During hoisting, the rubber protective layer 42 directly acts on the outer peripheral surface of the cylinder 9 instead of the clamping surface 41, thereby increasing the friction between the clamping jaw 4 and the cylinder 9, preventing the cylinder 9 from slipping, and being safer and more reliable; the rubber protective layer 42 is also used to prevent the clamping jaw 4 from scratching or clamping the cylinder 9, thereby improving the hoisting quality of the cylinder 9. Generally, the surface of the rubber protective layer 42 contacting the cylinder 9 is provided with anti-slip textures and anti-slip protrusions.

[0039] The clamping jaws 4 in the above-mentioned tooling need to rotate with the lower end of the clamping arm 3 around the second hinge axis 82 at the intersection of the two clamping arms 3 when clamping the cylinder body 9. In other words, the movement path of the clamping jaws 4 is an arc-shaped line, which causes the two clamping jaws 4 to be not evenly distributed on the circumference of the cylinder body 9, and the clamping forces of the two clamping jaws 4 on the cylinder body 9 are not collinear. Preferably, a crossbeam 5, a transfer arm 6 and a parallel link 7 are provided below the intersection of two clamping arms 3 which are hinged on different booms 2 and symmetrically arranged. The two ends of the crossbeam 5 are respectively hinged on the clamping arm 3 through a third hinge shaft 83. The transfer arm 6 is located below the crossbeam 5 and is hinged on the clamping arm 3 through a fourth hinge shaft 84. The two ends of the parallel link 7 are respectively hinged on the crossbeam 5 and the transfer arm 6 through a fifth hinge shaft 85. The crossbeam 5, the transfer arm 6, the parallel link 7 and the lower part of the clamping arm 3 constitute a parallelogram frame structure. The third hinge shaft 83, the fourth hinge shaft 84 and the fifth hinge shaft 85 are arranged in parallel with the first hinge shaft 81. The clamping jaw 4 is rotatably connected to the transfer arm 6 through the rotating shaft 34. Because the cross beam 5, the transfer arm 6, the parallel connecting rod 7 and the lower part of the clamping arm 3 form a parallelogram frame structure, when clamping the cylinder 9, the two lifting arms 2 approach each other and drive the two clamping arms 3 to rotate relative to each other around the third hinge axis 83, the upper ends of the two clamping arms 3 approach each other, and the lower ends of the two clamping arms 3 approach each other. Under the restriction of the parallel connecting rod 7, the clamping arm 3 drives the transfer arm 6 to move horizontally in a straight line, and the transfer arm 6 drives the two clamping jaws 4 to move in a straight line in the horizontal direction. The two pairs of clamping jaws 4 are clamped on the outer peripheral surface of the cylinder 9, so that the force on the cylinder 9 is balanced during the lifting process, the lifting stability of the cylinder 9 is improved, and the safety factor of the lifting process is improved.

[0040] The above is a specific implementation method of the utility model. It can be seen from the implementation process that the utility model provides a cylindrical lifting clamp tool, which drives two clamping claws to clamp the cylinder body by setting two clamping arms that are symmetrically crossed and hinged to each other, and uses the deadweight of the tool and the cylinder body to clamp the cylinder body, so that the cylinder body will not be deformed by excessive clamping force; by setting a clamping surface that is adapted to the shape of the outer circumferential surface of the cylinder on the clamping claw to clamp the outer circumferential surface of the cylinder, the contact area between the clamping claw and the cylinder is increased, and the degree of deformation of the cylinder during the lifting process is reduced, thereby ensuring the smoothness of subsequent installation procedures; by setting a clamping claw that is rotatably connected to the clamping arm to clamp one end of the cylinder, the utility model can complete the flipping of the cylinder while lifting the cylinder, which is convenient and quick, saves manpower, and improves lifting efficiency. By setting up a parallelogram frame structure composed of a crossbeam, a transfer arm, a parallel connecting rod and the lower part of the clamping arm, the clamping arm drives the transfer arm to move horizontally and linearly, and the transfer arm drives the two clamping claws to move linearly in the horizontal direction and approach each other, so that the two clamping claws are evenly clamped on the outer circumference of the cylinder, ensuring that the cylinder is subjected to balanced force during the lifting process, thereby improving the safety factor of the lifting process.

Claims

1. A cylindrical hanging clamp tool, comprising a hanging ear (1) and two hanging arms (2), wherein the upper ends of the two hanging arms (2) are hinged to the hanging ear (1) through a first hinge shaft (81), and the first hinge shaft (81) is arranged in the horizontal direction; characterized in that: The lower end of the boom (2) is hinged with a clamping arm (3), and the clamping arm (3) is hinged to the lower end of the boom (2) via a second hinge shaft (82); The two clamping arms (3) hinged on different suspension arms (2) are symmetrically arranged in a cross-shaped manner and are hinged to each other via the second hinge axis (82); the second hinge axis (82) is parallel to the first hinge axis (81); A clamping claw (4) is provided at the lower end of the intersection of two clamping arms (3) hinged on different suspension arms (2), and the clamping claw (4) is rotatably connected to the clamping claw (4) via a rotating shaft (34), and the rotating shaft (34) is arranged in the horizontal direction and perpendicular to the first hinge axis; The clamping jaw (4) is provided with a clamping surface (41), and the clamping surface (41) is adapted in shape to the outer peripheral surface of the cylinder (9).

2. The cylinder hanging clamping tool according to claim 1 is characterized in that: The two lifting arms (2) are hinged to the lifting ear (1) via the same first hinge shaft (81).

3. The cylinder hanging clamping tool according to claim 1 is characterized in that: It also includes an opening and closing card (21) hinged to the lifting ear (1) via the first hinge shaft (81), and a fixed clamping portion (211) is provided on the opening and closing card (21); The suspension arm (2) is provided with a clamping groove (22) for clamping with the fixed clamping portion (211); The first hinge shaft (81) is a fastening bolt (811), and the end of the fastening bolt (811) is threadedly connected with a fastening nut (812); The fixed clamping portion (211) is clamped in the clamping groove (22) by adjusting the position of the opening and closing clamp (21) in the axial direction of the fastening bolt (811).

4. The cylinder hanging clamping tool according to claim 3 is characterized in that: It also includes a partition (212) located between the angles of the two suspension arms (2).

5. The cylinder hanging clamping tool according to claim 4 is characterized in that: The partition portion (212) is a partition bar fixedly mounted on the opening and closing card (21), and the axis of the partition bar is parallel to the axis of the first hinge shaft (81); The partition bar cooperates with the fixed clamping portion (211) to ensure that the angle between the two suspension arms (2) on a plane perpendicular to the first hinge axis (81) remains unchanged.

6. The cylinder hanging clamping tool according to claim 1 is characterized in that: A rubber protective layer (42) is provided on the clamping surface (41).

7. The cylinder hanging clamping tool according to any one of claims 1 to 6, characterized in that: A crossbeam (5), a transfer arm (6) and a parallel connecting rod (7) are provided below the intersection of two clamping arms (3) which are hinged on different suspension arms (2) and arranged symmetrically and crosswise with each other; The two ends of the cross beam (5) are respectively hinged to the clamp arm (3) through a third hinge shaft (83); the transfer arm (6) is located below the cross beam (5) and is hinged to the clamp arm (3) through a fourth hinge shaft (84); the two ends of the parallel connecting rod (7) are respectively hinged to the cross beam (5) and the transfer arm (6) through a fifth hinge shaft (85); the cross beam (5), the transfer arm (6), the parallel connecting rod (7) and the lower part of the clamp arm (3) form a parallelogram frame structure; the third hinge shaft (83), the fourth hinge shaft (84) and the fifth hinge shaft (85) are arranged in parallel with the first hinge shaft (81); The clamping claw (4) is rotatably connected to the transfer arm (6) via the rotating shaft (34).

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