Adjustable lifting appliance

Abstract

The utility model discloses an adjustable lifting appliance, and belongs to the technical field of lifting appliances. The lifting lug comprises a connecting base, a through hole is formed in the center of the connecting base, and two symmetrical lifting lug holes are formed in the two sides of the connecting base; the lifting assembly is rotationally connected with the through hole, two fixing rods are symmetrically connected to the lifting assembly, a sliding rod is slidably connected to each fixing rod, and a lifting hook is hinged to the end, extending out of the corresponding fixing rod, of each sliding rod; the fixed end of the hydraulic rod is hinged to the connecting base, and the extending end of the hydraulic rod is hinged to the sliding rod. According to the lifting appliance, the length of the lifting appliance is shortened by driving the sliding rod to move in the direction close to the fixed rod, so that the lifting appliance enters a narrow space, and heavy objects in the narrow space are lifted.

Description

Technical Field

[0001] The utility model relates to the technical field of slings, in particular to an adjustable sling. Background Art

[0002] A sling is a device used to lift heavy objects in lifting machinery. In modern industrial production, slings are often needed to easily disassemble, transport and install machinery. When heavy objects need to be lifted in a narrow space, the sling often needs to be extended into the narrow space for grabbing. Many existing slings do not have the function of adjusting the distance between hooks, or the distance between hooks is adjustable, but the width of the beam is not adjustable, which causes inconvenience.

[0003] The existing Chinese patent with patent number CN216105577U discloses a sling with adjustable hook spacing, in which two hooks are slidably connected to a sliding rod, so as to facilitate adjusting the spacing between the hooks to meet the lifting requirements of heavy objects of different sizes; however, the spacing between the two connecting plates cannot be adjusted, that is, the length of the beam cannot be adjusted, so it is not possible to achieve the horizontal entry of the beam to lift heavy objects in a narrow space.

[0004] Therefore, it is necessary to develop an adjustable lifting device for the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide an adjustable sling to solve the problem that the length of the crossbeam cannot be adjusted and the heavy objects cannot be grabbed in a narrow space.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model discloses an adjustable sling, comprising:

[0008] A connecting seat, wherein a through hole is provided at the center of the connecting seat, and two symmetrically arranged lifting ear holes are provided on both sides of the connecting seat, and the lifting rope of the crane is passed through the lifting ear holes;

[0009] A lifting assembly rotatably connected to the through hole, wherein two fixed rods are symmetrically connected to the lifting assembly, each of the fixed rods is slidably connected to a sliding rod, and one end of the sliding rod extending from the fixed rod is hinged to a hook, and the hook is connected to the heavy object to be lifted through a rope;

[0010] A hydraulic rod, the top end of which is hinged to the connecting seat, and the extended end of which is hinged to the sliding rod.

[0011] Furthermore, a groove is provided on the connecting seat, a through hole is provided at the center of the groove, two lifting ear holes are symmetrically arranged on both sides of the through hole, and two first connecting shafts are symmetrically arranged on both sides above the through hole; the first connecting shaft is connected to the pin shaft hole at the top end of the hydraulic rod.

[0012] Furthermore, the lifting assembly includes: a driving motor, a lead screw and a limit block arranged in sequence from top to bottom;

[0013] The driving motor is fixedly connected in the groove; the driving shaft of the driving motor passes through the through hole and is drivingly connected to the end of the lead screw; the other end of the lead screw is connected to the limit block;

[0014] The driving shaft of the driving motor is rotatably connected to the through hole of the bearing;

[0015] The lead screw is matched with a lead screw nut, and the outer side of the lead screw nut is connected to the fixing rod.

[0016] Furthermore, the sliding rod has a second connecting shaft at one end close to the fixed rod, the fixed end of the hydraulic rod is hinged to the first connecting shaft, and the extended end of the hydraulic rod is hinged to the second connecting shaft.

[0017] Furthermore, a guide slot corresponding to the slide rod is arranged in the fixing rod.

[0018] The utility model has the following beneficial effects:

[0019] The utility model shortens the length of the sling by driving the sliding rod to move toward the direction close to the fixed rod, so that the sling can enter the narrow space, thereby realizing the lifting of heavy objects in the narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the adjustable sling of the utility model;

[0022] Figure 2 It is a schematic diagram of the adjustable lifting device of the utility model after the slide bar is adjusted;

[0023] Figure 3 It is a schematic diagram of the fixed rod of the adjustable sling of the utility model when it is raised to the highest position;

[0024] Figure 4 for Figure 1 A schematic diagram of a partially enlarged structural cross-section of part A;

[0025] Figure 5The utility model is an adjustable sling Figure 1 A schematic diagram of a top view structure;

[0026] Figure 6 It is a side cross-sectional schematic diagram of the sliding rod and the fixing rod of the utility model.

[0027] Figure numerals: 1. Connecting seat; 101. First connecting shaft; 102. Lifting ear hole; 103. Through hole; 2. Hydraulic rod; 3. Sliding rod; 301. Second connecting shaft; 4. Fixed rod; 5. Lifting assembly; 501. Driving motor; 502. Lead screw; 503. Lead screw nut; 504. Limiting block; 6. Lifting hook. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, 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, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] Embodiment 1

[0031] See also Figure 1-6 The utility model provides a technical solution: an adjustable sling, comprising: a connecting seat 1, a through hole 103 is opened at the center of the connecting seat 1, and two symmetrically arranged lifting ear holes 102 are provided on both sides of the connecting seat 1; the lifting ear holes 102 are connected to the lifting equipment through ropes.

[0032] The lifting assembly 5 is rotatably connected to the through hole 103, and two fixed rods 4 are symmetrically connected to the lifting assembly 5. The fixed rods 4 are provided with sliding grooves corresponding to the sliding rods 3. Each fixed rod 4 is slidably connected to the sliding rod 3, and one end of the sliding rod 3 extending out of the fixed rod 4 is hinged with a hook 6, and the hook 6 is connected to the heavy object to be lifted through a rope.

[0033] The lifting assembly 5 can be used to drive the fixed rod 4 and the sliding rod 3 to rise or fall, thereby adjusting the height of the hook 6; when lifting a heavy object at a high place, if the horizontal position of the hook 6 is still significantly lower than the horizontal position of the lifting ring on the heavy object when the rope is adjusted to the shortest, the lifting assembly 5 can be used to drive the fixed rod 4 and the sliding rod 3 to rise, thereby adjusting the position of the hook 6 to make its height consistent with the height of the lifting ring on the heavy object to meet the use requirements.

[0034] The hydraulic rod 2, the top end of the hydraulic rod 2 is hinged to the connecting seat 1, and the extended end of the hydraulic rod 2 is hinged to the sliding rod 3. The extended end of the hydraulic rod 2 drives the sliding rod 3 to extend and move away from the fixed rod 4; the extended end of the hydraulic rod 2 is retracted, driving the sliding rod 3 to move toward the fixed rod 4; thereby shortening the length of the sling, so that the sling can enter a narrow space and realize the lifting of heavy objects in the narrow space.

[0035] Compared with the prior art, the utility model provides a hydraulic rod 2, a sliding rod 3 and a fixed rod 4, and drives the sliding rod 3 to move toward the fixed rod 4 to shorten the length of the sling, so that the sling can enter a narrow space and lift heavy objects in the narrow space.

[0036] Embodiment 2

[0037] See also Figure 1-6 On the basis of the first embodiment, the utility model provides a technical solution: a groove is provided on the connecting seat 1, a through hole 103 is provided at the center of the groove, two lifting ear holes 102 are symmetrically arranged on both sides of the through hole 103, and two first connecting shafts 101 are symmetrically arranged on both sides above the through hole 103; the end of the sliding rod 3 close to the fixed rod 4 has a second connecting shaft 301, the fixed end of the hydraulic rod 2 is hinged to the first connecting shaft 101, and the protruding end of the hydraulic rod 2 is hinged to the second connecting shaft 301.

[0038] The horizontal positions of the two first connecting shafts 101 are higher than the horizontal position of the through hole 103, so that the fixed end of the hydraulic rod 2 rotates around the first connecting shaft 101; similarly, the extended end of the hydraulic rod 2 rotates around the second connecting shaft 301. The first connecting shaft 101 is connected to the pin hole at the top of the hydraulic rod 2, and a lifting hole is provided on the lifting ear hole 102 to facilitate connection with the lifting equipment.

[0039] The lifting assembly 5 includes: a driving motor 501, a lead screw 502 and a stopper 504 arranged in sequence from top to bottom; the driving motor 501 is fixedly connected in the groove; the driving shaft of the driving motor 501 passes through the through hole 103 and is drivingly connected to the end of the lead screw 502; the other end of the lead screw 502 is connected to the stopper 504. The driving shaft of the driving motor 501 is rotatably connected through the bearing through hole 103; a lead screw nut 503 is provided on the lead screw 502, and the outer side of the lead screw nut 503 is connected to the fixed rod 4.

[0040] Compared with the prior art, the utility model drives the lead screw 502 to rotate by driving the motor 501, thereby driving the lead screw 502, the fixed rod 4 and the slide rod 3 to move up and down along the lead screw 502, thereby adjusting the height of the hook 6.

[0041] According to different usage requirements, each component is made of steel. The steel material can be carbon steel, low alloy steel and high alloy steel, among which carbon steel is relatively low in price, while low alloy steel has higher strength and rigidity.

[0042] Embodiment 3

[0043] This embodiment provides a method for using an adjustable sling, which is the method for using the adjustable sling provided in Embodiment 1 or Embodiment 2, and is specifically as follows:

[0044] When the sling needs to enter a narrow space to lift heavy objects, the retraction of the extended end of the hydraulic rod 2 drives the sliding rod 3 to move toward the fixed rod 4, so that the sliding rod 3 retracts into the fixed rod 4, thereby shortening the length of the sling, allowing the sling to enter the narrow space and lift heavy objects in the narrow space.

[0045] When lifting a heavy object at a height, if the horizontal position of the hook 6 is still significantly lower than the horizontal position of the lifting ring on the heavy object when the rope is adjusted to the shortest, the lifting assembly 5 can be used to drive the fixed rod 4 and the sliding rod 3 to rise, thereby adjusting the position of the hook 6 so that its height is consistent with the height of the lifting ring on the heavy object to meet the usage requirements.

[0046] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0047] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An adjustable sling, characterized in that: include: A connecting seat (1), wherein a through hole (103) is provided at the center of the connecting seat (1), and two symmetrically arranged lifting ear holes (102) are provided on both sides of the connecting seat (1), and the lifting ear holes (102) are used to pass the lifting rope of the crane; A lifting assembly (5) rotatably connected to the through hole (103), wherein two fixed rods (4) are symmetrically connected to the lifting assembly (5), each of the fixed rods (4) is slidably connected to a sliding rod (3), and one end of the sliding rod (3) extending out of the fixed rod (4) is hingedly connected to a hook (6), and the hook (6) is connected to a heavy object to be lifted through a rope; A hydraulic rod (2), the top end of the hydraulic rod (2) is hinged to the connecting seat (1), and the extended end of the hydraulic rod (2) is hinged to the sliding rod (3).

2. The adjustable sling according to claim 1, characterized in that: The connection seat (1) is provided with a groove, the through hole (103) is provided at the center of the groove, the two lifting ear holes (102) are symmetrically arranged on both sides of the through hole (103), and two first connection shafts (101) are symmetrically arranged on both sides above the through hole (103); the first connection shaft (101) is connected to the pin shaft hole at the top end of the hydraulic rod (2).

3. The adjustable sling according to claim 2, characterized in that: The lifting assembly (5) comprises: a driving motor (501), a lead screw (502) and a limit block (504) which are arranged in sequence from top to bottom; The drive motor (501) is fixedly connected in the groove; the drive shaft of the drive motor (501) passes through the through hole (103) and is drivingly connected to the end of the lead screw (502); the other end of the lead screw (502) is connected to the limit block (504); The driving shaft of the driving motor (501) is rotatably connected to the through hole (103) via the bearing; The lead screw (502) is provided with a lead screw nut (503) in cooperation with the lead screw nut (503), and the outer side of the lead screw nut (503) is connected to the fixing rod (4).

4. The adjustable sling according to claim 2, characterized in that: The sliding rod (3) has a second connecting shaft (301) at one end close to the fixed rod (4), and the protruding end of the hydraulic rod (2) is hinged to the second connecting shaft (301).

5. The adjustable sling according to claim 3, characterized in that: The fixing rod (4) is provided with a guide sliding groove corresponding to the sliding rod (3).

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