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Vacuum furnace lifting limited device

A limit device, vacuum furnace technology, applied in the direction of quenching device, heat treatment equipment, quenching agent, etc., can solve problems such as failure, inaccurate stop position of the material truck, increased air leakage, etc.

Inactive Publication Date: 2007-10-17
WUJIANG TIANDIREN VACUUM FURNACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the eccentric wheel must be outside the vacuum furnace, this structure must open holes in the furnace body, which increases the probability of air leakage. In addition, due to the inconsistency of the movement inertia of the skip and the furnace weight, it often leads to The inertia is not consistent, and the position of the feeding car is not accurate enough. It is easy to break down when running horizontally, and it may hit the hearth and damage the equipment and workpieces.

Method used

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  • Vacuum furnace lifting limited device

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Embodiment Construction

[0021] Below in conjunction with the accompanying drawings the present invention is further described: the position of the feeding car (10) can be transmitted to the main gear (8) or the gear (7) connected with it by the reduction motor (9) to control, and its exact position is controlled by the limit switch (2 ) to control.

[0022] The limit device of the vacuum lifting material car is composed of a material car lifting screw, a gear motor, a brake device, a transmission gear, three control screw rods and nuts for high, middle and low positions. One main gear is installed in front of the lifting motor to drive the three gears on the control screw. The nut on the screw moves back and forth with the rotation of the lifting motor. When the material truck reaches the required position, the stop position of the nut is determined by the limit switch. Control, the limit switch transmits signals to the PLC, and the emergency brake is controlled when it is in place. The position adj...

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Abstract

The invention provides a inhibiting device lift buggy in the vacuum furnace, including furnace body, lift car, nuts drived by tears drived by lift motor on the high, medium, low position three control screw rod. The buggy position is determined by the nut docked position and a braking device is set at the front of the lift motor for control the nuts on the screw rod to open the braking switch when touching the inductive switch so as to scram without inertial phenomenon. The invention can correctly position the buggy in the furnace outside the furnace.

Description

technical field [0001] The invention relates to vacuum furnace equipment, in particular to a limit device for lifting and lowering trolleys in the vacuum furnace equipment. Background technique [0002] At present, the lifting limit of the domestic feed truck is positioned by the eccentric wheel connected to the internal feed truck pull rod. The up and down movement of the feed truck drives the eccentric wheel. , medium and low goals. Because the eccentric wheel must be outside the vacuum furnace, this structure must open holes in the furnace body, which increases the probability of air leakage. In addition, due to the inconsistency of the movement inertia of the feeding cart and the weight of the furnace, it often leads to the failure of the travel switch after it is cut off. The inertia is not consistent, and the position of the feeder car is not accurate enough. It is easy to break down when running horizontally, and it may hit the hearth and damage the equipment and wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/62C21D1/613
Inventor 李荣华
Owner WUJIANG TIANDIREN VACUUM FURNACE