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Constant force lifting device

A lifting device and constant force technology, which is applied in hoisting devices, supporting machines, mechanical equipment, etc., can solve problems such as the inability to realize constant force lifting of fixed brackets, and achieve the effect of prolonging the service life and expanding the scope of use

Active Publication Date: 2015-04-29
LUMI LEGEND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this constant force extension spring lifting device has the following defects: (1) due to the limitation of the variable radius runner parts, the dynamic force can only be constant when pressing down the lifting slider; (2) the variable radius runner and the extension spring are used together, only It can realize the constant force within a relatively small distance range, but cannot realize the constant force vertical lifting of the entire fixed bracket

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The constant force lifting device of this embodiment includes a support 1, a weight frame 2, a pulley block 3, a traction line 4, a power structure, and a power adjustment device.

[0035]Described pulley block 3 is formed by matching large and small two fixed pulley blocks and large and small two movable pulley blocks. The parts of pulley block are formed with prior art, and main part is pulley, also has some auxiliary parts such as central shaft, connecting support 1. The large and small fixed pulley blocks are fixed together through the same connecting bracket 1, and are fixed on the top of the support 1; the large and small movable pulley blocks are fixed together through the same connecting bracket 1. The size of the pulleys in the large fixed pulley block is the same as that in the large movable pulley block; the size of the pulleys in the small fixed pulley block is the same as that in the small movable pulley block.

[0036] The weight frame 2 is connected to t...

Embodiment 2

[0041] The constant force lifting device of this embodiment includes a support 1, a weight frame 2, a pulley block 3, a traction line 4, a power structure, and a power adjustment device.

[0042] Described pulley block 3 is formed by matching a fixed pulley block and a movable pulley block. The parts of pulley block are formed with prior art, and main part is pulley, also has some auxiliary parts such as central shaft, connecting support 1. The size of the pulleys in the fixed pulley block is the same as that in the movable pulley block.

[0043] The weight frame 2 is connected to the moving pulley block, and its two sides are slidably connected to two parallel guide rails 7 arranged on the front of the support 1, and the guide rails 7 are ball guide rails.

[0044] The power structure includes a tower-shaped winding disk 5 and a contact-type planar scroll spring 6 arranged inside the tower-shaped winding disk 5 . The tower-shaped winding reel 5 is fixed on the lower part of...

Embodiment 3

[0048] The constant force lifting device of this embodiment includes a support 1, a weight frame 2, a pulley block 3, a traction line 4, a power structure, and a power adjustment device.

[0049] Described pulley block 3 is formed by matching large, medium and small three fixed pulley blocks and large, medium and small three movable pulley blocks. The parts of pulley block are formed with prior art, and main part is pulley, also has some auxiliary parts such as central shaft, connecting support 1. Large, medium and small three fixed pulley blocks are fixed together by the same connecting bracket 1, and are fixed on the top of the support 1; three large, medium and small movable pulley blocks are fixed together by the same connecting bracket 1. The size of the pulleys in the large fixed pulley block is the same as that in the large moving pulley block; the size of the pulleys in the middle fixed pulley block is the same as that in the middle moving pulley block; the size of the...

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Abstract

The invention provides a constant force lifting device. The constant force lifting device comprises a bracket (1), a heavy matter rack (2), a pulley block (3), a traction line (4), a power structure and a power adjusting device; the power structure comprises a tower-shaped wire spool (5) and a contact type flat spiral spring (6); one end of the traction line (4) is fixed to the root part of a line slot (14) in the tower-shaped wire spool (5), and while the other end of the traction line (4) is bypassed a fixed pulley of a fixed pulley block and a movable pulley of a movable pulley block to be fixed to the fixed pulley block; the heavy matter rack (2) is connected with the movable pulley block, and two sides of the heavy matter rack (2) are glidingly connected to two parallel guide rails (7) on the front surface of the bracket (1); the outer end part of the contact type flat spiral spring (6) is fixed to the inner wall of the tower-shaped wire spool (5), and while the inner end part of the contact type flat spiral spring (6) is connected with the power adjusting device. With the adoption of the constant force lifting device, the constant force can be increased and decreased in the whole bracket range, and moreover, the force can be saved.

Description

technical field [0001] The invention relates to the technical field of mechanical devices, in particular to a constant force lifting device. Background technique [0002] With the continuous maturity of display technology, liquid crystal display devices are widely used in military, public security, railway, aviation, finance, securities, shopping malls, large supermarkets and other fields. Most of the current liquid crystal display devices are liquid crystal panels, and are installed on the lifting support frame, so that the up and down position can be adjusted according to the needs during use. [0003] The Chinese invention patent with the notification number CN102401217A discloses a constant force tension spring lifting device for installing liquid crystal display equipment. It includes a base and a fixed bracket arranged on the base. The fixed bracket is provided with a chute and a lifting slider. The lifting slider is installed on the fixed bracket through the chute, a...

Claims

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Application Information

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IPC IPC(8): F16M13/02B66D1/60B66D1/14B66D1/28
Inventor 尤小东
Owner LUMI LEGEND
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