CN201179631Y

CN201179631Y - Lever-type reinforcement safety release gear

Info

Publication number: CN201179631Y
Application number: CNU2007201710944U
Authority: CN
Inventors: 王精精
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-28
Filing date: 2007-11-28
Publication date: 2009-01-14
Anticipated expiration: 2017-11-28

Abstract

The utility model discloses a lever type reinforcement safe releasing device which can be arranged on a device similar to a clamping device 1. The lever type reinforcement safe releasing device comprises a bolt holder 8 arranged on one clamping arm of the clamping device 1, wherein the inner part of the bolt holder 8 is provided with a spring 9 and a bolt 6 capable of moving vertically along the axes of the bolt holder 8; and a lever shaft 5 and a lever 4 capable of rotating around the lever shaft 5 are arranged on the other clamping arm, one end of a lever driver 7 is hinged with the clamping arm, and the other end of the lever driver 7 is hinged with the tail end of the lever 4. When a cylinder rod of the lever driver 7 extends out, the lever 4 rotates around the lever shaft 5 widdershins, and the working bevel surface of the bolt 6 is compressed by the head part of the lever. When the cylinder rod of the lever driver 7 retracts, the lever 4 rotates around the lever shaft 5 clockwise and the working surface at the head part is separated from the bolt 6. With the adoption of the device, the aims of increasing clamping force and being safe to release are fulfilled in the condition of not changing the prior structure and the control mode of the clamping device 1. The lever type reinforcement safe releasing device is simple and convenient to implement and saves the cost.

Description

A kind of lever reinforcement safe release device

Technical field

The present invention relates to a kind of being applied on the clamping device and strengthen chucking power, possess the reinforcement safe release device that safety is released ability simultaneously again to arrive.

Background technology

When needs connect two rigid objects that are suspended on the rope, when keeping between them relative position in the course of the work, often adopt clamping device to connect, when for example harbour gate-type dual container loop wheel machine lifts by crane two containers simultaneously, just need to adopt clamping device that two containers are connected.Adopt this class clamping device will reach two purposes: reliable chucking power to be provided, connected two objects are kept synchronously in lifting or when mobile; When being connected thing and putting on the excessive external force of clamping device because of being obstructed, clamping device should be able to be opened and safe release when a certain.A typical example is at clamping device one end a hydraulic jack of not establishing the self-locking hydraulic valve to be set, rely on hydraulic thrust, certain clamping force is provided, when external force is excessive, the hydraulic cylinder internal pressure surpasses default pressure, by the overflow valve overflow, to reach the purpose of opening the jig arm safe release.Be connected object distance under bigger occasion at two, need the arm of force of clamping device longer, the long arm of force makes that the head chucking power is too small, in order to reach reliable clamping purpose, often need to increase the motive force that clamping device drives, for example strengthen cylinder diameter, increase system pressure etc., and then this body structure of clamping device also will strengthen, thereby makes structural volume increase, and cost increases.

Summary of the invention

The technical problem to be solved in the present invention is, a kind of device that can be installed in close retaining part on the clamping device is provided, and when clamping device clamping object, can increase chucking power, can throw off when gripped object is subjected to excessive external force.When finishing above-mentioned functions, do not need the control system of original clamping device is done change.

The present invention solves by the lever reinforcement safe release device that a kind of as following structure are provided, this device comprises: be installed in the plug housing on jig arm of clamping device, the latch that in plug housing, can move up and down, be pressed in the spring on the latch, and be installed in lever shaft on another jig arm of clamping device, can be around the lever of this rotation, lever actuator with former clamping device driver same type, one end and lever tail are hinged, the other end and this jig arm are hinged, and the direction of its driving is opposite with the driving direction of former clamping device.When clamping device two arms were closed up by open configuration, lever head inclined-plane and latch jacking inclined-plane interacted latch jack-up, and clamping device closes up back latch return under the spring force effect, and the lever head working face contacts with the latch inclined working.There is external force to do the time spent, clamping device two arms have the trend of opening, this moment, latch applied an active force to lever head, because lever tail also bears the active force of lever actuator, when the formed synthetic moment of torsion of these two active forces was clockwise direction, lever was thrown off, safe release, during for counter clockwise direction, keep the clamped condition of clamping device, reach the purpose (see figure 1) that increases chucking power.

Because the driver of activation lever motion can adopt the device with clamping device driver same-type, as hydraulic cylinder, cylinder, electromagnet etc., their oil circuit, gas circuit or Circuits System all can be in parallel, do not need to change original control system.

Description of drawings

Be described in further detail with embodiments of the present invention with reference to the accompanying drawings:

Fig. 1 is apparatus of the present invention plan views of (clamped condition) in working order

Fig. 2 closes up the partial view of a position in the process for apparatus of the present invention at clamping device

Fig. 3 is the cutaway view of latch and plug housing device

Fig. 4 is a specific embodiment of latch

Fig. 5 is a specific embodiment of lever

The specific embodiment

Fig. 1 is a plane of the present invention work sheet.Wherein clamping device 1, and clamping device driver 2 and gripped object 3 are ready-made clamping device examples that provide for the present invention is described.Lever reinforcement safe release device of the present invention can be installed near the position of this type of close gripped object 3 above clamping device.

Lever reinforcement safe release device is equipped with spring 9 by plug housing 8 on the jig arm that is installed in clamping device 1 in it, and the latch 6 (Fig. 3) that can move along the plug housing axis normal; Lever shaft 5 is installed on another jig arm, inserting this also can be around the lever 4 of its rotation, lever driving device 7 one ends and this arm are hinged, the tail end 18 of the other end and lever 4 is hinged, the direction of its driving is opposite with the driving direction of former clamping device driver 2, and when the piston rod of lever actuator 7 stretched out, lever 4 was rotated counterclockwise around lever shaft 5, its head working face 16 compresses the inclined working 12 of latch 6 and (sees Fig. 4, Fig. 5).During the piston rod withdrawal of lever actuated dress device 7, lever 4 turns clockwise and breaks away from latch 6 around lever shaft 5.

In the course of the work, 1 liang of arm of 3 pairs of clamping devices of gripped object applies external force, and when two arms had the trend of separating, latch 6 inclined working 12 (see figure 4)s affacted the last power F of head working face 16 (Fig. 5) of lever 4, and this power is to the arm of force Lf of lever shaft 5; Lever 4 afterbodys on 18 position (Fig. 5) are subjected to lever actuated dress device 7 active force P simultaneously, and this power is to the arm of force Lp of lever shaft 5; When F * Lf＞P * Lp, lever 4 clockwise rotates around lever shaft 5, and two arms of clamping device 1 separately; When F * Lf＜P * Lp, lever 4 rotates counterclockwise around lever shaft 5, and its head working face 16 will compress the inclined working 12 of latch 6 all the time, makes two arms of clamping device 1 continue to keep clamped condition.The parameter of latch 6 and lever 4 rationally is set, and the parameter of adjustment (adjusting) lever set driver 7 (as oil pressure, air pressure, voltage) just can reach the chucking power of increase clamping device, and purpose that can safe release under a certain critical external force.

When needs unclamped gripping object 3, the piston rod of clamping device driver 2 and lever actuator 7 was withdrawn simultaneously, and lever 4 turns clockwise, and disengaged with latch 3, and 1 liang of arm of clamping device also separates simultaneously.

Fig. 2 represents to close up in the process correlation of lever 4 and latch 6 by opening up into when 1 liang of arm of clamping device.In closing up process, the piston of clamping device driver 2 and lever actuator 7 is simultaneously protruding, when lever 4 head jacking inclined-planes 15 (Fig. 5) withstand latch 6 jacking inclined-planes 11 (Fig. 4), in the latch 6 indentation plug housings 8, after 1 liang of arm motion of clamping device puts in place, latch 6 stretches out plug housing 8 (Fig. 3) under spring 9 effects, this moment, the inclined working 12 (Fig. 4) of latch 6 contacted with lever 4 head working faces 16 (Fig. 5).

By above in conjunction with Fig. 1, Fig. 2 is to the description of the course of work as seen: lever reinforcement safe release device of the present invention is after installation, increase the chucking power purpose of safe release again but can reach, and no matter 1 liang of arm of clamping device need open or close up (starting working preparation and power cut-off stage), all need not to change original control system and control logic.

Fig. 3 is the cutaway view of plug housing, latch 6 is installed in the plug housing 8 and can moves up and down along plug housing 8 axis, under the effect of spring 9, the static position of latch 6 always is adjacent on the base plane of plug housing 8, spring bumper cover 10 is pressed on the latch seat board 8, and can prevent that latch 6 breaks away from plug housing 8.

Fig. 4 has provided a specific embodiment of latch 6.Latch 6 comprises a jacking inclined-plane 11, an inclined working 12, inclined working 12 is an important parameters of decision clamping force F size with the folder degree of its direction of motion, other also comprise two guide surface 13 (visible guide surface among the figure, another is symmetrical with it) its effect is that the position that guarantees its inclined working 12 changes in no instance, also has a spring guide 14 in addition.

Fig. 5 has provided a specific embodiment of lever 4.Lever 4 heads comprise a head jacking inclined-plane 15, and when 1 liang of arm of clamping device closed up, jacking inclined-plane 15 contacted with the jacking inclined-plane 11 (Fig. 4) of latch 6, and under the interaction on these two inclined-planes, latch 6 is with in the indentation plug housing 8; Lever 4 heads also comprise a head working face 16, and on clamping device 1 operating position, the working face 16 of lever 4 fits with the inclined working 12 (Fig. 4) of latch 6; Lever 4 heads are reserved the space that latch 6 stretches out, be provided with lever axis hole 17 in addition, lever actuator Connection Block hole 18, the distance between lever axis hole 17 and the lever actuated Connection Block hole 18 and lever axis hole 17 also are the important parameters of decision clamping force size to the distance of lever head working face 16.

Lever actuated dress device 7 can adopt the device with clamping device driver 2 same-types, as hydraulic cylinder, and cylinder, electromagnet etc., their oil circuit or Circuits System all can be connected in parallel, and the control system of former clamping device does not need to do other changes.

Adopt above-mentioned lever reinforcement safe release device,,, just can reach the increase chucking power and have the purpose of safe release again so original clamping device structure does not need special reinforcement because this device can be installed near retaining part.Be a kind of simple and easy to do, cost-effective reinforcement safety device.

Claims

1. lever reinforcement safe release device, it comprises plug housing, latch, spring, lever, lever shaft and lever actuator is characterized in that: described plug housing (8) is installed on the arm of clamping device (1), and latch (6) and spring (9) are housed in it; Described lever shaft (5) and the lever (4) that can rotate around it and lever actuator (7) are installed on another arm of clamping device (1); When being in the operating position, under the promotion of lever actuator (7), lever (4) head working face (16) is pressed on the inclined working (12) of latch (6).

2. lever reinforcement safe release device as claimed in claim 1 is characterized in that: the described latch (6) that is installed in the plug housing (8) can stretch out in plug housing (8) and withdraw, and latch (6) has jacking inclined-plane (11) and inclined working (12).