Cable-stayed prevention and height protection device for chain hoist

Abstract

The utility model relates to the technical field of chain hoists, in particular to a cable-stayed prevention and height protection device for a chain hoist. The chain hoist comprises a chain hoist body and a protection assembly arranged on the chain hoist body, the protection assembly comprises a mounting plate arranged on a motor shell of the chain hoist body and a limiting switch arranged on the mounting plate, the mounting plate is of an L-shaped structure, a kidney-shaped hole is vertically formed in one face of the mounting plate, and the limiting switch is arranged on the mounting plate. A C-shaped sliding rail is installed in the mode that a bolt and a nut are matched with the second kidney-shaped hole, a second installation plate is further installed at the end of the C-shaped sliding rail through a bolt and a nut, and the limiting switch is a cat whisker type limiting switch. The chain hoist has the advantages that the chain hoist can respond to actions in any direction, and the dangerous action of cable-stayed pulling is prevented when the chain hoist is used; and meanwhile, when the lifting hook body runs to a certain height, the lifting loop power supply is cut off through the must-type limiting action, so that top rushing accidents are prevented, and secondary protection is carried out on lifting.

Description

Technical Field

[0001] The utility model relates to the technical field of chain hoists, in particular to an anti-oblique pulling and height protection device for a chain hoist. Background Art

[0002] An electric chain hoist, also known as a chain electric hoist, is a light and small lifting device. The electric chain hoist consists of a motor, a transmission mechanism and a sprocket.

[0003] In the prior art, for the limit device of the chain electric hoist with the application number: CN201420530859.9, the installed limit switch is only applicable to one model and cannot be installed with different models of chain electric hoists or different models of limiters. Therefore, the compatibility is relatively poor and the cost is high.

[0004] Therefore, it is necessary to design an anti-oblique pulling and height protection device for a chain hoist to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an anti-oblique pulling and height protection device for a chain hoist to overcome the above-mentioned deficiencies existing in the current prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An anti-oblique pulling and height protection device for a chain hoist, which comprises a chain hoist body and a protection component arranged on the chain hoist body. The protection component comprises a mounting plate arranged on the motor housing of the chain hoist body and a limit switch arranged on the mounting plate. It is characterized in that: the mounting plate is of an L-shaped structure. A waist-shaped hole is vertically opened on one side of the mounting plate and is fixed on the motor housing of the chain hoist body through bolts and nuts. A second waist-shaped hole is horizontally opened on the other side of the mounting plate. A C-shaped slide rail is installed through bolts and nuts in cooperation with the second waist-shaped hole. A second mounting plate is also installed at the end of the C-shaped slide rail through bolts and nuts. A fixing hole for installing in cooperation with the C-shaped slide rail is opened on the second mounting plate. A third waist-shaped hole for installing the limit switch is also arranged on the second mounting plate. The limit switch is a cat whisker type limit switch, and the limit switch corresponds to the chain of the chain hoist body.

[0008] Preferably, the C-shaped slide rail is perpendicular to the second waist-shaped hole, and the C-shaped slide rail can move horizontally along the mounting plate.

[0009] Preferably, the third waist-shaped hole and the fixing hole are arranged corresponding to each other left and right.

[0010] The beneficial effects of the present utility model are as follows: By setting a limit switch on the main body of the chain hoist, this technical solution can respond to actions in any direction, preventing dangerous actions of oblique pulling when using the chain hoist; at the same time, when the hook body runs to a certain height, the limit action of the whisker type cuts off the power supply of the hoisting circuit to prevent the occurrence of over-travel accidents and provide secondary protection for hoisting; in addition, an adjustable C-shaped slide rail and a second mounting plate are provided to adapt to the installation of limit switches of different models, which is convenient for adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the front view of a chain hoist anti-oblique pulling and height protection device of the present utility model;

[0012] Figure 2 is the side view of a chain hoist anti-oblique pulling and height protection device of the present utility model;

[0013] Figure 3 is the schematic diagram of the protection component of a chain hoist anti-oblique pulling and height protection device of the present utility model;

[0014] In the figure: 1. Main body of the chain hoist; 2. Protection component; 21. Mounting plate; 22. Limit switch; 211. Waist-shaped hole; 222. Bolt; 223. Second waist-shaped hole; 3. C-shaped slide rail; 4. Second mounting plate; 41. Fixed hole; 42. Third waist-shaped hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0016] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model.

[0017] Refer to Figures 1 to 3 , a chain hoist anti-oblique pulling and height protection device, which includes a main body 1 of the chain hoist and a protection component 2 provided on the main body of the chain hoist;

[0018] The protection component 2 includes a mounting plate 21 arranged on the motor housing of the chain hoist body and a limit switch 22 arranged on the mounting plate;

[0019] The mounting plate is of an L-shaped structure. A waist-shaped hole 211 is vertically formed on one side of the mounting plate and is fixed to the motor housing of the chain hoist body through bolts 222 and nuts. A second waist-shaped hole 223 is horizontally formed on the other side of the mounting plate;

[0020] A C-shaped slide rail 3 is installed through bolts and nuts in cooperation with the second waist-shaped hole 223. The C-shaped slide rail 3 is arranged perpendicular to the second waist-shaped hole 223 and can move along the horizontal direction. By loosening and tightening the bolts and nuts, the position of the C-shaped slide rail 3 is horizontally moved, so as to cooperate with limit switches 22 of different models for installation;

[0021] A second mounting plate 4 is also installed on the bottom surface of the C-shaped slide rail 3 through bolts and nuts. A fixing hole 41 for cooperating with the C-shaped slide rail 3 is formed on the second mounting plate. A third waist-shaped hole 42 for installing the limit switch 22 is also arranged on the second mounting plate, and the third waist-shaped hole 42 and the fixing hole 41 are arranged corresponding to each other left and right;

[0022] The limit switch 22 is a whisker-type limit switch, and the limit switch 22 corresponds to the chain of the chain hoist body 1 and can respond to actions in any direction, preventing dangerous actions of oblique pulling when using the chain hoist; at the same time, when the hook body runs to a certain height, the whisker-type limit action cuts off the power supply of the hoisting circuit, preventing the occurrence of top collision accidents and providing secondary protection for hoisting.

[0023] The beneficial effects of the present utility model are as follows: By arranging a limit switch on the chain hoist body in this technical solution, it can respond to actions in any direction, preventing dangerous actions of oblique pulling when using the chain hoist; at the same time, when the hook body runs to a certain height, the whisker-type limit action cuts off the power supply of the hoisting circuit, preventing the occurrence of top collision accidents and providing secondary protection for hoisting; in addition, an adjustable C-shaped slide rail and a second mounting plate are provided to adapt to the installation of limit switches of different models, which is convenient for adjustment.

[0024] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A chain hoist anti-slant pulling and height protection device, comprising a chain hoist body, a protection component arranged on the chain hoist body, the protection component comprising a mounting plate arranged on the motor housing of the chain hoist body, and a limit switch arranged on the mounting plate, characterized in that: The mounting plate is in an L-shaped structure, with a waist-shaped hole vertically opened on one side of the mounting plate, which is fixed to the motor housing of the chain hoist body by bolts and nuts, and a second waist-shaped hole is horizontally opened on the other side of the mounting plate, and a C-shaped slide rail is installed by bolts and nuts in conjunction with the second waist-shaped hole, and a second mounting plate is also installed on the end of the C-shaped slide rail by bolts and nuts, and a fixing hole for matching the C-shaped slide rail is opened on the second mounting plate, and a third waist-shaped hole for installing a limit switch is also provided on the second mounting plate, and the limit switch is a cat's whisker type limit switch, and the limit switch is set corresponding to the chain of the chain hoist body.

2. The chain hoist anti-slant pulling and height protection device according to claim 1, characterized in that: The C-shaped slide rail and the second waist-shaped hole are arranged perpendicular to each other, and the C-shaped slide rail can move in the horizontal direction along the mounting plate.

3. The chain hoist anti-slant pulling and height protection device according to claim 1, characterized in that: The third waist-shaped hole and the fixing hole are arranged correspondingly on the left and right.

Images