CN211770163U - Electromagnetic locking device for lifting platform - Google Patents

Abstract

The utility model discloses an electromagnetic locking device for lift platform relates to spacing safety protection technical field. The device comprises a push-pull electromagnet, a supporting plate, a fastening screw, a microswitch, a positioning screw, a straight-through type pressure injection oil cup, a flange connecting body, a split pin, a shearing pin and a lining. The utility model discloses install in the fixed pipe outside of lift platform, when lift platform goes up and down to operating position, the round pin is sheared in the plug-type electromagnet drive among the electromagnetic locking device, and is dead with lift platform's the spacing lock of position initiative, realizes that lift platform is spacing in effective timely of operating position, abundant guarantee personnel's on the platform safety.

Description

Electromagnetic locking device for lifting platform

Technical Field

The utility model belongs to the technical field of spacing safety protection, especially, relate to an electromagnetic locking device for lift platform.

Background

With the development of industry and the advancement of science and technology, the safety production is more and more generally regarded by enterprises. The stability and reliability of the equipment operation are one of the important factors for ensuring the safe production. At present, the ball screw is often adopted as the lifting mechanism of the lifting platform, and an obvious defect exists: because the ball screw mechanism does not have the self-locking function, the lifting platform cannot be automatically locked after being lifted to the working position. Although a motor with a self-locking function can be selected as a driving device at present, the driving device only depends on the self-locking function of the driving motor, if the driving device is in failure, the safety of operating personnel on a platform is directly threatened, and accidents can happen at any time. Therefore, the limit of the lifting platform is realized only by self-locking of the driving motor, and the requirements on the reliability and the safety of the lifting platform cannot be actually met.

Disclosure of Invention

In order to solve the spacing problem of lift platform, the utility model provides an economical and practical, simple structure, safe and reliable's electromagnetism locking device to overcome the problem among the above-mentioned background art.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

an electromagnetic locking device for a lifting platform mainly comprises a push-pull electromagnet, a supporting plate, a fastening screw, a microswitch, a positioning screw, a straight-through type pressure filling oil cup, a flange connecting body, a cotter pin, a shearing pin and a bushing. The electromagnetic locking device connects the upper flange, the lower flange and the flange connector through bolts and is arranged on the outer side of the fixed guide pipe of the lifting platform; the shearing pin is connected with the push-pull electromagnet through the split pin, so that the push-pull action of the shearing pin is realized during working. After the lifting platform reaches the working position, the push-pull type electromagnet works, the shearing pin is inserted into the pin hole of the moving square pipe, and the micro switch bounces up to realize the active limiting operation. The straight-through type pressure injection oil cup can play a role in lubrication, so that the lifting platform is ensured to be smooth in the lifting process, and the clamping stagnation is prevented.

The utility model has the advantages that: the operation of the lifting platform in the lifting process is effectively ensured to be smooth, and the lifting platform is more safe and reliable in the working process through active limiting of the lifting platform; the later maintenance and repair cost of the lifting platform is greatly reduced; in addition, the device can be used as an external limiting device of a lifting mechanism without a self-locking function; and the whole device has simple structure, convenient installation, economy and practicality.

Drawings

Fig. 1 is a top view of the electromagnetic locking device of the present invention;

fig. 2 is a schematic structural view of a section a-a in fig. 1.

Reference numerals: 1. the push-pull type electromagnetic valve comprises a push-pull type electromagnet, 2 a supporting plate, 3 a fastening screw, 4 a microswitch, 5 a positioning screw, 6 a straight-through type pressure filling oil cup, 7 a flange connecting body, 8 a cotter pin, 9 a shearing pin, 10 a lining, 11 an upper flange, 12 a lower flange.

Detailed Description

The invention will be further explained and explained with reference to the drawings and examples. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The scope of the invention is to be determined by the claims and their equivalents.

Example (b): an electromagnetic locking device for a lifting platform mainly comprises a push-pull electromagnet 1, a supporting plate 2, a fastening screw 3, a microswitch 4, a positioning screw 5, a straight-through type pressure filling oil cup 6, a flange connecting body 7, a cotter pin 8, a shearing pin 9, a lining 10, an upper flange 11 and a lower flange 12. As shown in fig. 1 and 2, an electromagnetic bolt device connects an upper flange 11 and a lower flange 12 into a whole through a flange connector 7 by bolts, and is installed on the outer side of a fixed conduit of a lifting platform; the shear pin 9 and the push-pull electromagnet 1 are connected by a cotter pin 8. The lifting platform is pushed by the lifting mechanism to realize the lifting action vertical to the ground. When the stroke reaches a preset working position, the control system drives the shearing pin 9 to be inserted into a pin hole of a supporting leg of the upper frame structure through the push-pull type electromagnet 1 to position and lock the upper frame structure, and when the shearing pin is inserted into the pin hole, the microswitch 4 arranged at the end part of the shearing pin 9 is bounced; when the lifting platform is lifted again, the microswitch 4 falls down, the push-pull electromagnet 1 drives the shearing pin 9 to return to the original stop position, and the platform is allowed to lift. The straight-through type pressure injection oil cup 6 can lubricate the movable square pipe and the fixed square pipe in the lifting process of the lifting platform so as to ensure the smoothness of the lifting process.

Claims (1)

1. The utility model provides an electromagnetic locking device for lift platform, includes backup pad (2), fastening screw (3), micro-gap switch (4), set screw (5), straight-through pressure filling oil cup (6), upper flange (11), lower flange (12), characterized by: the shearing mechanism is characterized by further comprising a push-pull type electromagnet (1), a flange connecting body (7), a split pin (8), a shearing pin (9) and a lining (10), wherein the shearing pin (9) is connected with the push-pull type electromagnet (1) through the split pin (8), the push-pull type electromagnet (1) drives the shearing pin (9) to act, the shearing pin (9) can complete push-pull action in work, and after the shearing pin (9) is inserted in place, a microswitch (4) arranged at the end part of the shearing pin (9) bounces.

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