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Scissor fork type mechanical lifting gear

A lifting device and scissor-type technology, which is applied in the direction of lifting devices, lifting frames, theaters, etc., can solve the problems of large drive and transmission structure, high noise, low efficiency, etc., achieve reasonable drive and transmission, and overcome excessive horizontal force , the effect of reasonable configuration

Inactive Publication Date: 2005-01-12
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Furthermore, when the equipment installation site is not allowed to isolate the pump station, the noise is relatively large
[0003] In addition, the scissor lift table adopts a mechanically driven horizontal screw drive structure. Due to the large horizontal force, when the starting angle between the scissors and the horizontal plane is 15°, the horizontal force is equivalent to nearly 4 times the vertical load force. As the starting angle decreases, the horizontal force increases sharply according to the tangent curve, making its driving and transmission structure relatively large, and the efficiency is very low, so it can only be used on small equipment with small load.

Method used

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  • Scissor fork type mechanical lifting gear
  • Scissor fork type mechanical lifting gear
  • Scissor fork type mechanical lifting gear

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Embodiment Construction

[0008] Below in conjunction with accompanying drawing and embodiment the utility model is further described.

[0009] Such as figure 1 And shown in the view of C-C, the inner support (1) and the outer support (2) are hinged with the middle pin shaft (12), which is a double scissors structure. Such as figure 1 And D-D is shown in the view, one of the outside is hinged with the upper platform beam part (7) and the base part (3) with the hinge pin (13) up and down, and a running wheel (10 ') is equipped with on the inside. Such as figure 1 And B-B is shown in the view, on the outer support (2) roll on the lower track of the upper platform beam part (7) with the walking wheel that the walking wheel shaft (11) is adorned. Such as figure 1 And as shown in the view of A-A, the inner support (1) rolls on the upper track surface of the base part (3) with the running wheel (10) of the lower running wheel shaft (9) for the inner support (1), and the two ends of the horizontal tension...

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Abstract

A shear cross type mechanical lifting apparatus for the stage or orchestra pit features that the travelling wheels are respectively installed to top end of external supporting frame and the bottom end of internal supporting frame for travelling respectively along the track under top beam and the track on base, a transverse pull structure is connected between two axles of lower travelling wheels, a large screw bolt near the driver set is supported by UCP bearing, and the energy-accumulating spring set has the spring sleeving on telescopic upper guide tube and lower guide tube.

Description

technical field [0001] The invention relates to a mechanical lifting device, especially suitable for lifting an orchestra pit or a stage. Background technique [0002] The scissor-type lifting platform in the prior art has the characteristics of self-height of the equipment, outstanding lifting stroke amplification effect, simple and reliable structure, and is mostly used in the structure of lifting platforms for lifting orchestra pits or lifting stages in theaters and other occasions. Most of the methods use hydraulic drive devices. The hydraulic drive has the advantages of large bearing capacity, easy control and adjustment, and easy overload protection. However, for equipment that needs to be parked for a long time after the platform rises, due to the short life of the hydraulic seals, hydraulic oil leakage will cause the stage to sink. Furthermore, when the equipment installation site is not allowed to isolate the pumping station, the noise is relatively large. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F7/06E04H3/26
Inventor 魏发孔
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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