Long-arm lifting appliance with balance weight

Abstract

The utility model relates to a long-arm lifting appliance with a counterweight, and belongs to the technical field of hoisting machinery. Comprising a lifting arm, a main lifting hole is formed in the lifting arm, the main lifting hole is formed in the rear side of the midpoint of the lifting arm, one end of a bearing rope is connected with the main lifting hole, and the other end of the bearing rope is hung on a main lifting hook; a lifting hole is formed in the front end of the lifting arm, and a lifting piece is connected to the lifting hole; a horizontal sliding groove is formed in the tail end of the lifting arm, a balance weight is arranged on the outer side of the sliding groove, a center shaft of the balance weight is inserted into the sliding groove and can horizontally move in the sliding groove, and the balance weight is connected with the main lifting hook through an inclined auxiliary rope. A rack is arranged on the inner wall of the top of the sliding groove, a gear is arranged on the balance weight center shaft, and the gear is meshed with the rack. The lifting device is simple in structure and convenient to operate, the lifting arm for lifting a workpiece is still kept in a horizontal state by moving the balance weight, and then an object is horizontally lifted into a groove with an obstacle in the upper portion and the interior of a machine.

Description

Technical Field

[0001] The utility model relates to a long-arm sling with a counterweight, belonging to the technical field of lifting machinery. Background Art

[0002] Commonly used lifting tools for workpiece processing are special rigging such as hooks, wire ropes, and chains. Lifting suction cups, clamps, and forks can be used as special lifting tools on cranes for a long time, or they can be hung on hooks as replaceable auxiliary lifting tools for temporary use to improve work efficiency. Lifting tools for grabbing bulk materials are generally grab buckets with jaws that can be opened and closed, and electromagnetic suction cups can also be used to absorb magnetic materials such as metal chips. Lifting tools for lifting fluid materials are commonly used in barrels and hanging pots. Generally, molten steel or chemical solutions are unloaded by tilting or pulling out the bottom plug, and fluid materials such as concrete are unloaded by opening the bottom door of the hanging pot. However, existing vertical lifting and landing devices are often unable to lift objects horizontally into grooves with obstacles above or inside machines. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a long-arm belt counterweight lifting device for the above-mentioned prior art, which has a simple structure and is easy to operate, and is convenient for horizontally lifting objects into a groove with obstacles above or inside a machine.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: a long-arm sling with a counterweight, comprising a horizontally arranged boom, a main lifting hole is provided on the boom, the main lifting hole is arranged at the rear side of the midpoint of the boom, one end of a vertically arranged load-bearing rope is connected to the main lifting hole, and the other end of the load-bearing rope is hung on a main lifting hook; a lifting hole is provided at the front end of the boom, a lifting piece is connected to the lifting hole, and the workpiece is lifted by the lifting piece; a horizontally arranged slide groove is provided at the end of the boom, a counterweight is provided on the outside of the slide groove, the central axis of the counterweight is inserted in the slide groove and can move horizontally in the slide groove, the counterweight is connected to the main lifting hook through an auxiliary rope arranged obliquely, so that the boom remains in a horizontal state.

[0005] A rack is arranged on the inner wall of the top of the slide groove, and a gear is arranged on the central axis of the counterweight, and the gear is meshed with the rack.

[0006] The lifting member comprises a permanent magnetic suction cup, and the suction cup is connected to the lifting hole through a suction cup lifting rope.

[0007] The side of the boom is provided with scale lines, which correspond to the slide slots. In an initial state, the counterweight is at the zero position of the scale lines.

[0008] Compared with the prior art, the advantages of the utility model are: a long-arm sling with a counterweight, which has a simple structure and is easy to operate. By moving the counterweight, the arm that lifts the workpiece remains in a horizontal state, and the object can be horizontally lifted into a groove with an obstacle above or inside a machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of a long-arm sling with a counterweight according to an embodiment of the utility model;

[0010] In the figure, 1 boom, 1.1 slide, 1.2 lifting hole, 1.3 main lifting hole, 1.4 rack, 2 counterweight, 3 auxiliary rope, 4 main hook, 5 load-bearing rope, 6 suction cup lifting rope, and 7 suction cup. DETAILED DESCRIPTION

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] like Figure 1 As shown, a long arm with counterweight sling in this embodiment includes a horizontally arranged boom 1, a main lifting hole 1.3 is provided on the boom 1, and the main lifting hole 1.3 is arranged at the rear side of the midpoint of the boom 1. The main lifting hole 1.3 is connected to one end of a vertically arranged load-bearing rope 5, and the other end of the load-bearing rope 5 is hung on the main hook 4 of the beam-type lifting equipment. A lifting hole 1.2 is provided at the front end of the boom 1, and a lifting piece is provided on the lifting hole 1.2, and the lifting piece lifts the workpiece. A horizontally arranged chute 1.1 is provided at the end of the boom 1, and a rack 1.4 is provided on the top inner wall of the chute 1.1. A disc-type counterweight 2 is provided on the outside of the chute 1.1, and a central shaft is provided at the center of the counterweight, and the central shaft is inserted into the chute 1.1. A gear is provided on the central shaft, and the gear is meshed with the rack, so that the counterweight 2 is fixed in the chute 1.1 and can move horizontally along the chute 1.1. A scale line is provided on the side of the boom 1, and the scale line corresponds to the chute 1.1. The central axis of the counterweight 2 is connected to one end of the auxiliary rope 3, and the other end of the auxiliary rope 3 is arranged on the main hook 4. A triangle is formed between the auxiliary rope 3, the load-bearing rope 5 and the boom 1. When the lifting device does not lift the workpiece, the counterweight 2 is at the zero position of the scale line, the boom 1 is in a horizontal state, and the auxiliary rope 3 is not under force. When the lifting device lifts the workpiece, the counterweight 2 is rotated, driving the gear to rotate on the rack, so that the counterweight 2 moves and adjusts to the corresponding position in the slide 1.1, and the load-bearing rope 5 and the auxiliary rope 3 are stressed at the same time, so that the boom 1 that lifts the workpiece remains in a horizontal state, and the beam-type lifting equipment controls the main hook 4 to move horizontally, so that the workpiece is lifted horizontally into the groove with obstacles above and inside the machine.

[0013] The lifting member is a permanent magnetic suction cup 7, which is connected to the lifting hole 1.2 through a suction cup suspension rope 6. The workpiece is adsorbed on the suction cup.

[0014] The application has a simple structure and is easy to operate, and is convenient for horizontally hoisting objects into a groove with obstacles above or into the interior of a machine.

[0015] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A long arm with counterweight lifting device, characterized in that: It includes a horizontally arranged boom, a main lifting hole is provided on the boom, the main lifting hole is arranged on the rear side of the midpoint of the boom, one end of a vertically arranged load-bearing rope is connected to the main lifting hole, and the other end of the load-bearing rope is hung on a main lifting hook; a lifting hole is provided at the front end of the boom, a lifting piece is connected to the lifting hole, and the workpiece is lifted by the lifting piece; a horizontally arranged slide groove is provided at the end of the boom, a counterweight is provided on the outside of the slide groove, the central axis of the counterweight is inserted in the slide groove and can move horizontally in the slide groove, and the counterweight is connected to the main lifting hook through an obliquely arranged auxiliary rope to achieve the goal of keeping the boom in a horizontal state.

2. A long arm sling with counterweight according to claim 1, characterized in that: A rack is arranged on the inner wall of the top of the slide groove, and a gear is arranged on the central axis of the counterweight, and the gear is meshed with the rack.

3. A long arm sling with counterweight according to claim 1, characterized in that: The lifting member comprises a permanent magnetic suction cup, and the suction cup is connected to the lifting hole through a suction cup lifting rope.

4. A long arm sling with counterweight according to claim 1, characterized in that: The side of the boom is provided with scale lines, which correspond to the slide slots. In an initial state, the counterweight is at the zero position of the scale lines.

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