Crane and grabbing device thereof

Abstract

The present invention relates to the technical field of cranes, and in particular to a crane and a grabbing member thereof, including a chassis, a lifting mechanism, a channel steel and a grabbing mechanism, wherein a mounting frame is fixedly connected to the top of the chassis, an adjusting support rod is rotatably connected to the bottom of the mounting frame, at least two hydraulic rods are rotatably connected to the outer wall of the mounting frame, and a connecting rod is connected between the output end of the hydraulic rod and the outer wall of the adjusting support rod. The present invention controls the lifting of objects through a lifting assembly of a lifting mechanism, and blocks the anti-falling ball through a first locking assembly when the end of the traction steel cable away from the hoisted object breaks, provides a certain buffer resistance, prolongs the time for the hoisted object to fall, and provides a certain amount of safe evacuation time for ground personnel, thereby improving the safety of the crane when in use, and monitors the roller speed through a speed sensor, and when the roller speed is too fast, blocks the anti-falling ball through a second locking assembly to delay the time for the heavy object to fall to the ground.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a crane and a grabbing member thereof. Background Art

[0002] A crane refers to a device used in lifting machinery to lift heavy objects. The most commonly used lifting equipment for lifting finished objects are hooks and slings. Others include lifting rings, suction cups, clamps and forks, which are widely used in the lifting and hoisting industry. Depending on the different lifting objects, the corresponding grabbing parts should be selected.

[0003] The lifting parts of existing cranes are generally steel cables, coarse hemp ropes or slings. Once these lifting parts break during use, they will fall rapidly under the gravity of the heavy objects, leaving no time for ground personnel to react. Sometimes this may result in some personnel failing to escape to a safe area, causing casualties and posing certain safety hazards. The existing grabbing parts need to be replaced according to the goods being hoisted, which is rather troublesome. Moreover, when lifting tubular objects, the size of the grabbing parts is often limited, resulting in unbalanced forces on both ends of the tubular objects during lifting, making them prone to tilting or even sliding, posing certain safety risks. Therefore, a crane and a grabbing part are needed to solve the problem. Summary of the invention

[0004] In order to solve the problems that the lifting member of the existing crane directly falls off when disconnected, which poses a potential safety hazard and that it is troublesome to replace the grabbing member, the present invention provides a crane and a grabbing member thereof.

[0005] The present invention provides a crane that adopts the following technical solution:

[0006] A crane, comprising:

[0007] A chassis, wherein a mounting frame is fixedly connected to the top of the chassis, an adjusting support rod is rotatably connected to the bottom of the mounting frame, at least two hydraulic rods are rotatably connected to the outer wall of the mounting frame, and a connecting rod is connected between the output end of the hydraulic rod and the outer wall of the adjusting support rod;

[0008] A lifting mechanism, the lifting mechanism comprising a lifting assembly, a first locking assembly and a second locking assembly, the lifting assembly being arranged between a mounting frame and an adjusting support rod, the lifting assembly comprising a traction steel cable and an anti-falling ball, a plurality of anti-falling balls being arranged and fixed at equal intervals on the outside of the traction steel cable, the first locking assembly being fixedly connected to the mounting frame, and the anti-falling ball passing through the first locking assembly in one direction;

[0009] Channel steel, the second locking assembly is arranged at the top end of the outer wall of the channel steel, a roller frame is arranged outside the second locking assembly, a roller is rotatably connected to the roller frame, the traction steel cable passes through the roller, a speed sensor for monitoring the speed of the roller is detachably connected to the outer wall of the roller frame, and the speed sensor is connected to the second locking assembly by electrical signals;

[0010] The grabbing mechanism is arranged on the channel steel.

[0011] By adopting the above technical scheme, the lifting of the object is controlled by the lifting component of the lifting mechanism, and when the end of the traction steel cable away from the hoisted object breaks, the anti-fall ball is blocked by the first locking component to provide a certain buffer resistance, thereby extending the time for the hoisted object to fall and providing a certain amount of time for ground personnel to evacuate safely, thereby improving the safety of the crane when in use. The speed sensor is used to monitor the roller speed. When the traction steel cable breaks close to the end of the hoisted object (that is, the roller speed is too fast), the second locking component is used to block the anti-fall ball to delay the time for the heavy object to fall to the ground, thereby further improving the safety of the crane when in use.

[0012] Optionally, the winch, pulley a and pulley b, the outer wall of the winch is fixedly connected to the mounting frame, the pulley a is rotatably connected to the top of the mounting frame, the pulley b is rotatably connected to the top of the adjusting support rod, one end of the traction steel cable is fixedly connected to the adjusting support rod, and the other end passes through the roller, pulley b, pulley a and the first locking assembly in sequence, and is wound around the winch.

[0013] By adopting the above technical solution, the lifting and lowering of the traction steel cable is controlled by the winch, and the pulley a and the pulley b ensure that the traction steel cable is straightened, thereby reducing the friction of direct contact of the traction steel cable during movement.

[0014] Optionally, the first locking assembly includes an anti-fall box, a lower clamping seat and an upper clamping seat, the anti-fall box is fixedly connected to the outer wall of the mounting frame, the outer wall of the anti-fall box is threadedly rotatably connected to a threaded rod, a plurality of lower clamping seats are provided and all are fixedly connected to the inner wall of the anti-fall box, the number of upper clamping seats is the same as the number of lower clamping seats, the top of one of the upper clamping seats is threadedly sleeved with the bottom of the threaded rod, a connecting rod is fixedly connected between each of the upper clamping seats, the inner walls of the upper and lower clamping seats are rotatably hinged with a folding clamping plate, a semicircle is provided on the folding clamping plate, and the diameter of the semicircle is smaller than the diameter of the anti-fall ball.

[0015] By adopting the above technical solution, the movement of the upper clamping seat is controlled by the threaded rod, so that when the upper clamping seat and the lower clamping seat are closed, the movement of the anti-fall ball is hindered to prevent the traction steel cable from falling quickly after breaking. When the upper clamping seat is separated from the lower clamping seat, the traction steel cable can slide freely to ensure the lowering and recovery of the traction steel cable.

[0016] Optionally, the rotation range of the folding pallet is 0°-90° in the reverse direction along the pulling back of the traction cable.

[0017] By adopting the above technical solution, the movement direction of the anti-fall ball is restricted by limiting the rotation range of the folding pallet, thereby preventing the anti-fall ball from moving in the opposite direction of the traction cable recovery.

[0018] Optionally, the second locking assembly includes a vertical cylinder, in which a cylinder a is fixedly connected, the output shaft of the cylinder a is coaxially fixedly connected to a vertical rod, one end of the vertical rod is fixedly connected to an arc-shaped clamping plate, a reinforcement ring is fixedly connected at the connection between the vertical rod and the output shaft of the cylinder a, and the arc-shaped clamping plate is provided with a semicircular groove with a diameter smaller than the diameter of the anti-fall ball.

[0019] By adopting the above technical solution, the electric signal transmitted by the speed sensor is used to start the cylinder a, which lifts the vertical pole and hinders the movement of the anti-fall ball through the semicircular groove on the arc-shaped clamping plate, thereby delaying the anti-fall time and improving the safety of the crane.

[0020] A grabbing member, applied to the above crane, comprising:

[0021] The grabbing mechanism comprises a slide plate, an annular hanger and a tubular clamping piece, a plurality of hooks are fixedly connected to the outer wall of the annular hanger in a circumferential array, two slide plates are provided and are respectively slidably connected to the inner walls of both sides of the channel steel, and the tubular clamping piece is fixedly connected to the outer wall of the slide plate;

[0022] The hook is detachably connected to the second locking assembly, and the annular hanger is detachably connected to the hook.

[0023] By adopting the above technical scheme, some irregularly shaped objects can be lifted by using the annular hanger and the hook of the grabbing mechanism in conjunction with the sling, and cylindrical objects can be lifted by the tubular clamping piece. The hook can provide the annular hanger with multiple winding points for the sling, thereby improving the stability during lifting. The sliding plate setting improves the application range of the tubular clamping piece, and the various lifting grabbing pieces are combined without the need for frequent replacement, thereby improving the applicability and grabbing efficiency of the grabbing piece.

[0024] Optionally, the tubular clamping member includes a support plate, a positioning rod and a clamping claw, the support plate is fixedly connected to the outer wall of the slide plate, the positioning rod is fixedly connected to the support plate, the clamping claw is rotatably connected to the positioning rod, and a cylinder c is rotatably connected between one end of the clamping claw and the support plate.

[0025] By adopting the above technical solution, the expansion and retraction of the clamping claws are controlled by the cylinder c to clamp the tubular objects, which is suitable for tubular objects with different diameters.

[0026] Optionally, a plurality of suction cups are fixedly connected to the bottom end of the support plate.

[0027] By adopting the above technical solution, objects such as glass and flat plates can be adsorbed and transported by the suction cup.

[0028] Optionally, a cylinder b fixedly connected to the inner wall of the channel steel is provided on the top side of the slide plate, an output shaft of the cylinder b is fixedly connected to a connecting plate, and a bottom end of the connecting plate is fixedly connected to the slide plate.

[0029] By adopting the above technical solution, the movement of the connecting plate is controlled by the cylinder b, thereby controlling the movement of the slide plate, and then controlling the movement of the tubular clamping piece, so as to facilitate the adjustment of the clamping balance at both ends of the tubular object, prevent the tilting of the hoisted object, and then prevent the object from falling, thereby improving safety.

[0030] In summary, the present invention includes at least one of the following beneficial technical effects:

[0031] The present invention controls the lifting of objects through the lifting assembly of the lifting mechanism, and blocks the anti-falling ball through the first locking assembly when the end of the traction steel cable away from the hoisted object breaks, thereby providing a certain buffer resistance, prolonging the time for the hoisted object to fall, and providing a certain time for ground personnel to evacuate safely, thereby improving the safety of the crane when in use, and the speed sensor monitors the speed of the roller. When the traction steel cable breaks at one end close to the hoisted object (that is, the roller speed is too fast), the second locking assembly blocks the anti-falling ball, delaying the time for the heavy object to fall to the ground, further improving the safety of the crane when in use;

[0032] The present invention can lift different objects through the grabbing mechanism without constantly replacing the grabbing parts, is easy to use, improves the lifting work efficiency, and meets people's use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of a crane and its grabbing member in this embodiment.

[0034] Figure 2 It is a front view structural diagram of a crane and a grabbing member thereof in this embodiment.

[0035] Figure 3 yes Figure 2 Enlarged structural diagram at A in the middle.

[0036] Figure 4 It is a schematic cross-sectional structural diagram of a first locking assembly of a crane and a grabbing member thereof in this embodiment.

[0037] Figure 5 It is a partial structural schematic diagram of a first locking assembly of a crane and a grabbing member thereof in this embodiment.

[0038] Figure 6 It is a schematic structural diagram of a second locking assembly of a crane and a grabbing member thereof in this embodiment.

[0039] Description of reference numerals:

[0040] 1. chassis; 11. mounting frame; 12. adjusting support rod; 13. hydraulic rod; 14. connecting rod; 2. lifting mechanism; 21. winch; 22. pulley a; 23. pulley b; 24. traction cable; 25. anti-fall ball; 26. first locking assembly; 261. anti-fall box; 262. lower card seat; 263. threaded rod; 264. connecting rod; 265. upper card seat; 266. folding card plate; 27. second locking assembly; 271. Vertical cylinder; 272, cylinder a; 273, vertical rod; 274, arc-shaped clamping plate; 275, reinforcement ring; 28, speed sensor; 29, roller frame; 3, channel steel; 4, grabbing mechanism; 41, cylinder b; 42, connecting plate; 43, slide plate; 44, annular hanger; 441, hook; 45, tubular clamping piece; 451, support plate; 452, positioning rod; 453, cylinder c; 454, clamping claw; 46, suction cup; 5, hook. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 - Figure 6 The present invention is described in further detail.

[0042] The embodiment of the invention discloses a crane and a grabbing member thereof.

[0043] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] Reference Figure 1 - Figure 6 , a crane comprising

[0045] The chassis 1 has a mounting frame 11 fixedly connected to the top of the chassis 1, an adjusting support rod 12 rotatably connected to the bottom of the mounting frame 11, and at least two hydraulic rods 13 rotatably connected to the outer wall of the mounting frame 11. The number of hydraulic rods 13 is set to ensure the stability of the adjusting support rod 12 during rotation and fixation. The mounting frame 11 provides a mounting point, and a connecting rod 14 is connected between the output end of the hydraulic rod 13 and the outer wall of the adjusting support rod 12. The crane can be installed on different equipment through the chassis 1, such as on a crane, and can be used movably or installed at a fixed location as a fixed-point lifting device;

[0046] The lifting mechanism 2 includes a lifting component, a first locking component 26 and a second locking component 27. The lifting component is arranged between the mounting frame 11 and the adjusting support rod 12. The lifting component controls the lifting speed and the lowering speed of the object. The lifting component includes a traction steel cable 24 and an anti-falling ball 25. The anti-falling ball 25 is provided with a plurality of anti-falling balls 25 and is fixed at equal intervals on the outside of the traction steel cable 24. The traction steel cable 24 ensures the traction strength. The first locking component 26 is fixedly connected to the mounting frame 11. The anti-falling ball 25 passes through the first locking component 26 in one direction. When the traction steel cable 24 breaks at one end away from the hoisted object, the anti-falling ball 25 is blocked by the first locking component 26 to provide a certain buffer resistance, prolong the time for the hoisted object to fall, and provide time for ground personnel to evacuate safely.

[0047] Channel steel 3, the second locking assembly 27 is arranged at the top of the outer wall of the channel steel 3, a roller frame 29 is arranged outside the second locking assembly 27, a roller is rotatably connected to the roller frame 29, the roller frame 29 provides a support point for the roller, and is convenient for the movement of the traction steel cable 24, the traction steel cable 24 passes through the roller, and the outer wall of the roller frame 29 is detachably connected to a speed sensor 28 for monitoring the speed of the roller, and the speed sensor 28 is connected to the second locking assembly 27 by electrical signals;

[0048] The grabbing mechanism 4 is arranged on the channel steel 3 and is used for grabbing and lifting objects.

[0049] Specifically, when in use, the grabbing mechanism 4 is used to fix the hoisted objects, and the objects are lifted by the lifting assembly of the lifting mechanism 2. During the lifting process, the first locking assembly 26 is locked so that the anti-fall ball 25 can only pass through the first locking assembly 26 in one direction, thereby preventing the traction cable 24 located inside the first locking assembly 26 and outside the lower end of the first locking assembly 26 from breaking, causing the objects to fall quickly, thereby reducing safety hazards. At the same time, when the traction cable 24 in the vertical state breaks, the speed sensor 28 detects that the roller speed is too fast, and the second locking assembly 27 works to limit the anti-fall ball 25, thereby preventing the traction cable 24 and heavy objects from falling quickly, providing time for ground personnel to evacuate safely, thereby reducing the probability of accidents.

[0050] Reference Figure 1 and Figure 2 Specifically, in the embodiment of the present invention, the lifting assembly also includes a winch 21, a pulley a22 and a pulley b23. The outer wall of the winch 21 is fixedly connected to the mounting frame 11, the pulley a22 is rotatably connected to the top of the mounting frame 11, the pulley b23 is rotatably connected to the top of the adjusting support rod 12, one end of the traction cable 24 is fixedly connected to the adjusting support rod 12, and the other end passes through the roller, the pulley b23, the pulley a22 and the first locking assembly 26 in sequence, and is wound around the winch 21.

[0051] During operation, the winch 21 controls the movement of the traction cable 24 to lift or lower the hoisted objects. The setting of the roller, the pulley b23 and the pulley a22 ensures the smooth movement of the traction cable 24 and reduces direct friction.

[0052] Reference Figure 1 and Figure 4 Specifically, in the embodiment of the present invention, the first locking assembly 26 includes an anti-fall box 261, a lower card seat 262 and an upper card seat 265, the anti-fall box 261 is fixedly connected to the outer wall of the mounting frame 11, the outer wall of the anti-fall box 261 is threadedly rotatably connected to a threaded rod 263, the lower card seat 262 is provided with a plurality of and all are fixedly connected to the inner wall of the anti-fall box 261, the number of upper card seats 265 is the same as the number of lower card seats 262, the top of one of the upper card seats 265 is threadedly sleeved with the bottom of the threaded rod 263, and a connecting rod 264 is fixedly connected between each upper card seat 265, and the inner wall of the upper card seat 265 and the lower card seat 262 is rotatably hinged with a folding card plate 266, and a semicircle is provided on the folding card plate 266, and the diameter of the semicircle is smaller than the diameter of the anti-fall ball 25, and the rotation range of the folding card plate 266 is 0°-90° along the reverse pull-back of the traction cable 24.

[0053] During the lifting process, the threaded rod 263 is twisted to make the upper clamping seat 265 and the lower clamping seat 262 contact and close. When the traction cable 24 is lifted normally, the anti-fall ball 25 can drive the folding clamping plate 266 to rotate through the upper clamping seat 265 and the lower clamping seat 262. When the traction cable 24 located in the first locking assembly 26 and outside the lower end of the first locking assembly 26 is broken, the traction cable 24 is quickly recovered in the descending direction under the action of the gravity of the heavy object. At this time, due to the rotation restriction of the folding clamping plate 266, the anti-fall ball 2 5 cannot drive the folding card plate 266 to flip, and provide resistance to the anti-falling ball 25 to continue to move, that is, it cannot pass through the upper card seat 265 and the lower card seat 262, so as to clamp the traction steel cable 24, delay the time for the traction steel cable 24 and the heavy object to fall, provide time for the ground personnel to evacuate safely, and improve the safety of the use of the crane. It should be noted that the rotation of the threaded rod 263 can be increased by adding a driving motor outside the anti-falling box 261 to replace manual labor and improve the safety of operation. The driving motor is an existing structure and will not be described in detail.

[0054] Reference Figure 6 Specifically, in the embodiment of the present invention, the second locking assembly 27 includes a vertical cylinder 271, a cylinder a272 is fixedly connected inside the vertical cylinder 271, an output shaft of the cylinder a272 is coaxially fixedly connected to a vertical rod 273, one end of the vertical rod 273 is fixedly connected to an arc-shaped clamping plate 274, a reinforcement ring 275 is fixedly connected at the connection between the vertical rod 273 and the output shaft of the cylinder a272, and a semicircular groove with a diameter smaller than the diameter of the anti-fall ball 25 is opened on the arc-shaped clamping plate 274.

[0055] When the speed sensor 28 detects that the roller speed is too fast, the cylinder a272 receives the signal and starts, driving the vertical rod 273 and the arc-shaped clamping plate 274 to move upward quickly. The arc-shaped clamping plate 274 contacts the roller, and the anti-fall ball 25 cannot pass through the semicircular groove, so the anti-fall ball 25 is stuck, thereby preventing the hoisted objects from falling directly, further improving the safety of the crane when in use.

[0056] Reference Figure 1 - Figure 3 , a grabbing member, applied to the crane of the above embodiment, comprising:

[0057] The grabbing mechanism 4 includes a slide plate 43, an annular hanger 44 and a tubular clamping member 45. The outer wall of the annular hanger 44 is fixedly connected to a plurality of hooks 441 in a circumferential array. The slide plate 43 is provided with two slide plates and respectively slidably connected to the inner walls of both sides of the channel steel 3. The tubular clamping member 45 is fixedly connected to the outer wall of the slide plate 43.

[0058] The hook 5 is detachably connected to the second locking assembly 27, and the annular hanger 44 is detachably connected to the hook 5;

[0059] The tubular clamping member 45 includes a support plate 451, a positioning rod 452 and a clamping claw 454. The support plate 451 is fixedly connected to the outer wall of the slide plate 43, the positioning rod 452 is fixedly connected to the support plate 451, the clamping claw 454 is rotatably connected to the positioning rod 452, a cylinder c453 is rotatably connected between one end of the clamping claw 454 and the support plate 451, and a plurality of suction cups 46 are fixedly connected to the bottom end of the support plate 451.

[0060] When in use, use different slings according to different situations.

[0061] Scenario 1:

[0062] When lifting irregular objects, use slings to tie the irregular objects tightly, and wrap the slings around the hooks 441 on the annular hanger 44, and limit them with bolts to prevent the slings from detaching from the hooks 441. The slings can also be passed around the hooks 5 to form a conical multi-sling structure as a whole to improve the stability during lifting. It should be noted that if Figure 1 As shown, the hook 441 is connected to the annular hanger 44 via a steel ring, the length of which can be selected according to the objects to be hoisted.

[0063] Scenario 2:

[0064] When lifting round tubular objects, start the cylinder c453 to control the rotation of the clamping claw 454 to clamp and fix the tubular objects. After clamping and fixing, part of the suction cup 46 contacts the round tubular objects, providing a certain adhesion suction force, reducing the probability of the tubular objects sliding horizontally, thereby improving the safety of transporting the tubular objects.

[0065] Scenario 3:

[0066] When lifting glass and smooth flat objects, the suction cup 46 can be directly used to adsorb on the surface of the object. At this time, in order to improve the stability during lifting, the side of the object can be clamped with the clamp 454, or the side of the object can be clamped into the hook 441 to ensure that the object will not fall during the lifting process, thereby ensuring the safety of the object during lifting.

[0067] Reference Figure 2 and Figure 3 Specifically, in the embodiment of the present invention, a cylinder b41 fixedly connected to the inner wall of the channel steel 3 is provided on the top side of the slide plate 43, the output shaft of the cylinder b41 is fixedly connected to the connecting plate 42, and the bottom end of the connecting plate 42 is fixedly connected to the slide plate 43.

[0068] When in use, it is adjusted according to the length and size of the tubular article. The movement of the connecting plate 42 is controlled by the cylinder b41, thereby controlling the movement of the slide plate 43, and then controlling the clamping position of the clamping claw 454, so as to facilitate the adjustment of the balance of the clamping at both ends of the tubular article, prevent the tilting of the hoisted article, and then prevent the article from falling, thereby improving the safety of hoisting of tubular articles and the applicability of the tubular clamping piece 45.

[0069] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane, characterized in that: include: A chassis (1), wherein a mounting frame (11) is fixedly connected to the top of the chassis (1), an adjusting support rod (12) is rotatably connected to the bottom of the mounting frame (11), at least two hydraulic rods (13) are rotatably connected to the outer wall of the mounting frame (11), and a connecting rod (14) is connected between the output end of the hydraulic rod (13) and the outer wall of the adjusting support rod (12); A lifting mechanism (2), the lifting mechanism (2) comprising a lifting assembly, a first locking assembly (26) and a second locking assembly (27), the lifting assembly being arranged between a mounting frame (11) and an adjusting support rod (12), the lifting assembly comprising a traction steel cable (24) and an anti-falling ball (25), a plurality of anti-falling balls (25) being arranged and fixed at equal intervals on the outside of the traction steel cable (24), the first locking assembly (26) being fixedly connected to the mounting frame (11), and the anti-falling ball (25) passing through the first locking assembly (26) in one direction; The channel steel (3), the second locking assembly (27) is arranged at the top end of the outer wall of the channel steel (3), a roller frame (29) is arranged outside the second locking assembly (27), a roller is rotatably connected to the roller frame (29), the traction steel cable (24) passes through the roller, a speed sensor (28) for monitoring the speed of the roller is detachably connected to the outer wall of the roller frame (29), and the speed sensor (28) is electrically signal-connected to the second locking assembly (27); A grabbing mechanism (4), wherein the grabbing mechanism (4) is arranged on the channel steel (3).

2. The crane according to claim 1, characterized in that: The lifting assembly further comprises a winch (21), a pulley a (22) and a pulley b (23); the outer wall of the winch (21) is fixedly connected to the mounting frame (11); the pulley a (22) is rotatably connected to the top of the mounting frame (11); the pulley b (23) is rotatably connected to the top of the adjusting support rod (12); one end of the traction steel cable (24) is fixedly connected to the adjusting support rod (12); the other end passes through a roller, a pulley b (23), a pulley a (22) and a first locking assembly (26) in sequence, and is wound around and connected to the winch (21).

3. The crane according to claim 1, characterized in that: The first locking assembly (26) comprises an anti-fall box (261), a lower clamping seat (262) and an upper clamping seat (265); the anti-fall box (261) is fixedly connected to the outer wall of the mounting frame (11); the outer wall of the anti-fall box (261) is threadedly rotatably connected to a threaded rod (263); a plurality of the lower clamping seats (262) are provided and are all fixedly connected to the inner wall of the anti-fall box (261); the number of the upper clamping seats (265) is the same as the number of the lower clamping seats (262); the top of one of the upper clamping seats (265) is threadedly sleeved with the bottom of the threaded rod (263); connecting rods (264) are fixedly connected between the upper clamping seats (265); the inner walls of the upper clamping seats (265) and the lower clamping seats (262) are rotatably hinged with a folding clamping plate (266); a semicircle is provided on the folding clamping plate (266); and the diameter of the semicircle is smaller than the diameter of the anti-fall ball (25).

4. The crane according to claim 3, characterized in that: The rotation range of the folding clamping plate (266) is 0°-90° along the pulling back of the traction steel cable (24).

5. The crane according to claim 1, characterized in that: The second locking assembly (27) comprises a vertical cylinder (271), a cylinder a (272) being fixedly connected inside the vertical cylinder (271), an output shaft of the cylinder a (272) being coaxially fixedly connected to a vertical rod (273), one end of the vertical rod (273) being fixedly connected to an arc-shaped clamping plate (274), a reinforcement ring (275) being fixedly connected at a connection between the vertical rod (273) and the output shaft of the cylinder a (272), and a semicircular groove having a diameter smaller than that of the anti-falling ball (25) being provided on the arc-shaped clamping plate (274).

6. A gripping member, characterized in that: The crane applied to any one of claims 1 to 5 comprises: A gripping mechanism (4), the gripping mechanism (4) comprising a slide plate (43), an annular hanger (44) and a tubular clamping member (45), the outer wall of the annular hanger (44) being fixedly connected to a plurality of hooks (441) in a circumferential array, the slide plate (43) being provided with two hooks which are respectively slidably connected to the inner walls of both sides of the channel steel (3), and the tubular clamping member (45) being fixedly connected to the outer wall of the slide plate (43); A hook (5), wherein the hook (5) is detachably connected to the second locking assembly (27), and the annular hanger (44) is detachably connected to the hook (5).

7. The gripping member according to claim 6, characterized in that: The tubular clamping member (45) comprises a support plate (451), a positioning rod (452) and a clamping claw (454); the support plate (451) is fixedly connected to the outer wall of the slide plate (43); the positioning rod (452) is fixedly connected to the support plate (451); the clamping claw (454) is rotatably connected to the positioning rod (452); and a cylinder c (453) is rotatably connected between one end of the clamping claw (454) and the support plate (451).

8. The gripping member according to claim 7, characterized in that: A plurality of suction cups (46) are fixedly connected to the bottom end of the support plate (451).

9. The gripping member according to claim 6, characterized in that: A cylinder b (41) fixedly connected to the inner wall of the channel steel (3) is arranged on the top side of the slide plate (43); an output shaft of the cylinder b (41) is fixedly connected to a connecting plate (42); and a bottom end of the connecting plate (42) is fixedly connected to the slide plate (43).

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