CN210944646U - Electric hoist with limiting device - Google Patents

Abstract

The utility model provides a take stop device's electric block, include: the leading truck, the chain, the mounting panel, limit switch, trigger the board, the couple, buffer spring and trigger the lid, leading truck fixed mounting is at the studio top, the leading truck is used for leading the chain, fixed mounting has the mounting panel below the leading truck, install limit switch on the mounting panel, install on the mounting panel and trigger the lid, trigger the lid and can move in vertical direction relative to the mounting panel, limit switch's trigger position is in the top that triggers the lid, the chain passes the mounting panel and triggers the lid, be fixed with the couple on the chain, the couple is located and triggers the lid below, be connected with the trigger board through buffer spring on the couple, trigger the board and supply the chain to pass, trigger the board and be used for the extrusion to trigger the. The electric hoist with the limiting device solves the problem that in the prior art, the hook cannot be lifted to a specified position and then the electric hoist stops running due to the fact that the contact probability of the buffering limiting spring and the limiting contact of the limiting switch is small.

Description

Electric hoist with limiting device

Technical Field

The utility model relates to a jacking equipment, concretely relates to take stop device's electric block.

Background

Chinese patent discloses a chain guide plate limit structure of electric block with application number cn201820165330.x, including: chain conductor frame, sprocket, chain and lead the link joint, the top of leading the link joint is close to chain conductor frame department and is equipped with limit switch, limit switch's below is equipped with limit contact, limit contact passes and leads the link joint that the link joint stretches out downwards, and the chain end of installing the couple is equipped with buffering limit spring, rises to be close to when leading the link joint at the chain, and buffering limit spring bumps and touches limit contact, and limit contact triggers and starts limit switch and closes the electric block operation, has cancelled original clamp plate structure, makes buffering limit spring arrive behind the limit contact, and limit contact direct contact limit switch makes it close the electric block operation to realized to a certain extent that the couple rises to a certain position after electric block outage, but the shortcoming that this structure still exists does:

because the buffer limit spring is thin, the contact probability of the buffer limit spring and the limit contact of the limit switch is small, and the chain swings, so that the buffer limit spring can not be contacted with the limit contact of the limit switch when the hook reaches the highest position, and the limit switch cannot be triggered after the hook reaches the position, so that the limit cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a take stop device's electric block solves among the prior art and leads to unable realization couple to rise the problem that stops electric block operation behind the assigned position because of buffering limit spring and limit switch's spacing contact probability is little.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a take stop device's electric block, include: the leading truck, the chain, the mounting panel, limit switch, trigger the board, the couple, buffer spring and trigger the lid, leading truck fixed mounting is at the studio top, the leading truck is used for leading the chain, fixed mounting has the mounting panel below the leading truck, install limit switch on the mounting panel, install on the mounting panel and trigger the lid, trigger and cover the relative mounting panel of ability and move in vertical direction, limit switch's trigger position is in the top that triggers the lid, the chain passes the mounting panel and triggers the lid, be fixed with the couple on the chain, the couple is located and triggers lid below, be connected with the trigger board through buffer spring on the couple, trigger the board and supply the chain to pass, trigger the relative chain of board ability and move on vertical reverse, trigger the board and be used for the extrusion to trigger.

Compared with the prior art, the utility model discloses following beneficial effect has:

the trigger plate is arranged on the buffer spring, so that the area which can be contacted with the limit switch trigger part is increased, the problem that the trigger plate cannot be contacted with the limit switch trigger part due to the small area of the top surface of the buffer spring is avoided, and the trigger plate can be ensured to be acted with the limit switch trigger part after the hook is lifted to a certain position; because limit switch is located chain one side, limit switch trigger part bottom is the punctiform, therefore limit switch trigger part and trigger plate direct contact can lead to triggering the board slope, extrusion power is inhomogeneous when leading to limit switch trigger part and triggering the board contact, couple position is uncertain when leading to triggering, consequently, the trigger lid has been designed, make trigger lid bottom can fully contact with limit switch trigger part, it is sufficient with the contact stability of trigger plate to trigger the lid bottom simultaneously, the trigger plate can not squint yet, thereby realize triggering limit switch after the couple rises to the establishment position, the high level signal that limit switch stretched into is received to the control box who is connected with limit switch, the control box passes through motor driver control electric block stop function, thereby guaranteed that the limit work to electric block can go on smoothly.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of an electric hoist with a limiting device;

FIG. 2 is a cross-sectional view of the trigger cap of FIG. 1;

FIG. 3 is a side view of the hanger of FIG. 1;

fig. 4 is a cross-sectional view a-a of the mounting head of fig. 3.

Reference numerals: the chain-type trigger comprises a guide frame 1, a chain 2, a mounting plate 3, a limit switch 4, a trigger plate 5, a buffer cushion 50, a hook 6, a buffer spring 7, a trigger cover 8, a mounting assembly 9, a mounting head 91, a first spring 92, a wedge block 93, a guide rod 94, a rotating wheel 95, a second spring 96, a sleeve 97, a limiting ring 98 and a mounting ring 99.

Detailed Description

In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:

as shown in fig. 1 to 4, the utility model provides a take stop device's electric block, include: leading truck 1, the chain 2, the mounting panel 3, limit switch 4, trigger plate 5, couple 6, buffer spring 7 and trigger lid 8, 1 fixed mounting of leading truck is at the studio top, leading truck 1 is used for guiding chain 2, fixed mounting has mounting panel 3 below leading truck 1, install limit switch 4 on the mounting panel 3, install on mounting panel 3 and trigger lid 8, trigger lid 8 can move on vertical direction relative to mounting panel 3, limit switch 4's trigger position is located the top of triggering lid 8, chain 2 passes mounting panel 3 and triggers lid 8, be fixed with couple 6 on the chain 2, couple 6 is located and triggers lid 8 below, be connected with trigger plate 5 through buffer spring 7 on couple 6, trigger plate 5 supplies chain 2 to pass, trigger plate 5 can be relative chain 2 at vertical reverse upward movement, trigger plate 5 is used for the extrusion to trigger lid 8. The cover 8 is triggered in the direction of mounting panel 3 and moves on vertical direction, when triggering cover 8 and triggering plate 5 contact, can not lead to triggering plate 5 slope, has guaranteed triggering plate 5 to the extrusion power of triggering cover 8, because triggering plate 5 is big with the area of contact who triggers cover 8, consequently even if 2 swings of chain can not lead to triggering plate 5 and triggering cover 8 contactless yet to it can go on smoothly to have guaranteed that whole limit switch 4 triggers work.

In order to facilitate the installation of the buffer spring 7 and the trigger plate 5, the hook 6 is detachably connected with the chain 2 through the installation component 9.

In order to design the mounting assembly 9 with a simple structure, the mounting assembly 9 comprises: the mounting head 91, first spring 92, voussoir 93 and guide bar 94, chain 2 includes a plurality of chain loops, two adjacent chain loops cup joint each other, the sunken jack that forms of mounting head 91 top surface, the jack is used for supplying the chain loop of chain 2 bottommost, insert the jack in can supplying two voussoirs 93 to stretch into, the sunken guide hole that forms and external intercommunication of jack inner wall, each voussoir 93 all sets up in a guide hole, voussoir 93 is fixed to first spring 92 one end, the first spring 92 other end is fixed to the guide hole inner wall, voussoir 93 is fixed to guide bar 94 one end, the guide bar 94 other end can stretch out the external world through the guide hole, can keep two voussoirs 93 to insert the chain loop of chain 2 bottommost under first spring 92 elasticity, voussoir 93 does not hinder the chain loop of chain 2 from the. When the chain ring at the bottommost part of the chain 2 is inserted into the inserting hole, the top surfaces of the two wedge blocks 93 are in a V shape due to the fact that the included angle between the top surface of the wedge block 93 and the vertical direction is an acute angle, so that the two wedge blocks 93 can be squeezed to be separated when the chain ring at the bottommost part of the chain 2 is contacted with the top surface of the wedge block 93, the two wedge blocks 93 keep the wedge block 93 inserted into the chain ring at the bottommost part of the chain 2 under the elastic force of the first spring 92 when the chain ring at the bottommost part of the chain 2 passes over the wedge block 93, and the two wedge blocks 93 limit the.

To avoid damage to the wedges 93 due to excessive friction when the bottom most link of the chain 2 passes over the wedges 93, rotatable wheels 95 are mounted on each wedge 93 near the corners of the other wedge 93 to ensure that the bottom most link passes over the wedges 93 smoothly.

In order to avoid that the first spring 92 allows the wedge 93 to move, with the result that the bottommost chain ring runs the risk of disengaging from the wedge 93, the mounting assembly 9 further comprises: the mounting head 91 is provided with a limiting ring 98, the mounting head 91 is provided with a mounting ring 99, the sleeve 97 is arranged between the mounting ring 99 and the limiting ring 98, the sleeve 97 is sleeved outside the mounting head 91, the sleeve 97 is fixed to one end of the second spring 96, the other end of the second spring 96 is fixed to the mounting ring 99, the sleeve 97 and the limiting ring 98 can be kept to be tightly attached to each other under the elastic force of the second spring 96, and the guide rod 94 is limited from protruding out of the mounting head 91. The sleeve 97 limits the guide rod 94 to move towards the outside of the mounting head 91, and because the sleeve 97 can only move in the vertical direction, the pressure of the guide rod 94 on the sleeve 97 in the horizontal direction cannot have any influence on the position of the sleeve 97 in the vertical direction, so that the risk that the bottommost chain ring is separated from the wedge block 93 is avoided, and the risk that the hook 6 is suddenly separated from the chain 2 cannot exist in the lifting process of the hook 6.

In order to prevent the trigger plate 5 from being damaged by collision with the trigger cover 8, the top surface of the trigger plate 5 is provided with a buffer pad 50, the buffer pad 50 is used for contacting with the trigger cover 8, and the buffer pad 50 is made of elastic material.

The working principle of the embodiment is as follows: when the hook 6 is connected to the chain 2, first, the sleeve 97 is moved so that the guide cylinder leaks out of the sleeve 97, and this state is maintained; then, the chain ring at the bottommost part of the chain 2 is inserted into the insertion hole, the chain ring extrudes the top surfaces of the two wedge blocks 93, so that the two wedge blocks 93 are separated, the chain ring is inserted between the two rotating wheels 95, finally, the bottom of the chain ring passes over the rotating wheels 95, and the wedge blocks 93 are inserted into the chain ring under the elastic force of the first spring 92; finally, the sleeve 97 is released so that the sleeve 97 surrounds the guide hole, and the sleeve 97 restricts the guide rod 94 from passing through the guide hole.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (6)

1. The utility model provides a take stop device's electric block which characterized in that includes: the leading truck, the chain, the mounting panel, limit switch, trigger the board, the couple, buffer spring and trigger the lid, leading truck fixed mounting is at the studio top, the leading truck is used for leading the chain, fixed mounting has the mounting panel below the leading truck, install limit switch on the mounting panel, install on the mounting panel and trigger the lid, trigger and cover the relative mounting panel of ability and move in vertical direction, limit switch's trigger position is in the top that triggers the lid, the chain passes the mounting panel and triggers the lid, be fixed with the couple on the chain, the couple is located and triggers lid below, be connected with the trigger board through buffer spring on the couple, trigger the board and supply the chain to pass, trigger the relative chain of board ability and move on vertical reverse, trigger the board and be used for the extrusion to trigger.

2. The electric hoist with the limiting device according to claim 1, wherein the hook is detachably connected with the chain through the mounting assembly.

3. The electric hoist with the limiting device according to claim 2, wherein the mounting assembly comprises: the installation head, first spring, voussoir and guide bar, the chain includes a plurality of chain rings, adjacent two chain rings cup joint each other, the sunken jack that forms of installation head top surface, the jack is used for supplying the chain ring of bottom, insert the jack internal energy and supply two voussoirs to stretch into, the sunken guiding hole that forms and external intercommunication of jack inner wall, each voussoir all sets up in a guiding hole, the voussoir is fixed to first spring one end, the first spring other end is fixed to the guiding hole inner wall, the voussoir is fixed to guide bar one end, the guide bar other end can stretch out the external world through the guiding hole, can keep two voussoirs to insert the chain ring of chain bottom under first spring force, the voussoir does not hinder the chain ring of.

4. An electric block with a limiting device as claimed in claim 3, wherein each wedge block is provided with a rotatable wheel near the corner of the other wedge block.

5. The electric hoist with the limiting device according to claim 4, wherein the mounting assembly further comprises: the mounting head comprises a first spring, a limiting ring, a mounting ring, a sleeve and a limiting ring, wherein the limiting ring is mounted at the top of the mounting head, the mounting ring is mounted at the bottom of the mounting head, the sleeve is arranged between the mounting ring and the limiting ring, the sleeve is sleeved outside the mounting head and is fixed to one end of the first spring, the other end of the first spring is fixed to the mounting ring, and the sleeve can be kept to be tightly attached to the limiting ring under the elastic force of the first spring and is limited to prevent the guide.

6. The electric hoist with the limiting device as claimed in claim 1, wherein the top surface of the trigger plate is provided with a buffer pad, the buffer pad is used for contacting with the trigger cover, and the buffer pad is made of an elastic material.

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