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An overload protection device

A technology of overload protection and tension device, which is applied in the direction of construction and building construction, can solve problems such as failure to respond in time, broken wipers, etc., and achieves the effect of simple structure and machine protection

Inactive Publication Date: 2016-06-01
FOSHAN TUPO MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it takes a certain amount of time for the process from the current detection device detecting that the working current of the wall-smearing machine exceeds the set value to the power-off mechanism cutting off the power supply of the wall-slicing machine, which cannot be responded in time
During this period, the plastering head will still keep rising or falling, and the plastering board will still be squeezed and broken
Moreover, this load protection device can only detect the increase in the load of the wall-slicing machine during the lifting process of the wiper board, and cannot detect the increase in the load of the wall-slicing machine during the lowering process of the wiper board.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , 2 The overload protection device shown includes a winch 1 and a wall plastering machine 2 . The winch 1 drives the wall plastering machine 2 through the wire rope 3 . The overload protection device is installed in the hoist frame 14. The winch 1 is of forward and reverse type, and it is provided with two interlocking contactors. The positive and negative rotation of the winch 1 corresponds to the rising action and the descending action of the wall plastering machine 2 .

[0035] The pulley frame 4 is hinged in the hoist frame 14 by pin shaft 13, and can swing left and right relative to the hoist frame 14.

[0036] The pulley frame 4 is provided with a first contact surface 6 and a second contact surface 7 . A gas spring 8 and a first travel switch 9 are installed on one side of the first touch surface 6 ; a tension spring 11 is connected to the second touch surface 7 , and a second travel switch 10 is installed on one side of the second touch sur...

Embodiment 2

[0047] The structure of the overload protection device of the present embodiment 2 is the same as that of the embodiment 1, and the difference between the present embodiment 2 and the embodiment 1 is that, as Figure 7 , 8 As shown, the winch 1 is directly fixedly connected with the wall plastering machine 2, and the wire rope and the top of the gantry are relatively fixed. At this time, the overload protection device is directly installed on the wall plastering machine 2 .

[0048] A support plate 12 is added on the frame of the wall plastering machine 2, and the extension spring 11 is connected on the support plate 12. Pulley frame 4 is hinged on the frame of wall plastering machine 2 by bearing pin 13, can relatively wall plastering machine 2 swing.

[0049] As the wall plastering machine 2 rises or falls, the overload protection device moves along with the wall plastering machine 2, and the relative positions of the pulley 5 and the wire rope 3 remain unchanged. When an...

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Abstract

The invention discloses an overload protection device which comprises a winch, a wall plastering machine and a pulley yoke, wherein the winch drives the wall plastering machine through a steel wire rope; the pulley yoke is capable of swinging relative to a rack where the winch is located; a pulley for changing the tension direction of the steel wire rope is mounted on the pulley yoke; a first touch surface and a second touch surface are further arranged on the pulley yoke; a thrust device is arranged in the position opposite to the first touch surface; a tension device is connected onto the second touch surface; the overload protection device further comprises a first limit switch and a second limit switch which can control the winch to stop operating; and the first limit switch is mounted on the side of the first touch surface, and the second limit switch is mounted on the side of the second touch surface. The overload protection device disclosed by the invention is simple in structure and can be started in time to stop winch operation under the jamming condition in the ascending or descending process of the wall plastering machine, and accordingly, the machine is effectively protected.

Description

technical field [0001] The invention relates to an overload protection device of a wall plastering machine, in particular to an overload protection device. Background technique [0002] The wall plastering machine replaces manual application of cement mortar to the wall, which has the advantages of high efficiency, saving time, labor and labor. [0003] At present, the wall plastering machine used in construction is provided with one group of upright tracks, and such a group of upright tracks is usually made of 2 parallel and vertically arranged tracks, called the left track and the right track. The wall plastering machine head moves up and down along the vertical track, so as to realize the functions of plastering from bottom to top and calendering from top to bottom. [0004] In the existing wall plastering machines, the wall plastering head is generally connected with the winch by a wire rope, so as to realize the function of the wall plastering head moving up and down a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04F21/08
Inventor 王建虎
Owner FOSHAN TUPO MACHINERY MFG CO LTD