CN201890755U

CN201890755U - Chain failure-sensing mechanism

Info

Publication number: CN201890755U
Application number: CN2010206288024U
Authority: CN
Inventors: 黄禄辉; 莫国强; 黄茂锋; 梁晓东; 张士勇
Original assignee: Guangxi Yuchai Heavy Industry Co Ltd
Current assignee: Guangxi Yuchai Heavy Industry Co Ltd
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-07-06
Anticipated expiration: 2020-11-29

Abstract

The utility model discloses a chain failure-sensing mechanism, which comprises a chain, a connecting fork, a holding plate, a limiting sleeve, a spring, a big washer, a self-locking nut and a sensor. The mechanism is characterized in that: the chain is articulated with the connecting fork, the screw section of the connecting fork passes through the holding plate, the limiting sleeve, the big washer and the self-locking nut, and the end of the screw section is opposite to the sensor. The failure of the chain can be easily detected as long as a spring-precompressed fastening method is adopted at the movable adjusting end of the conventional chain mechanism and the broken chain detection sensor is mounted nearby on the basis of the conventional chain mechanism, consequently, the occurrence of accidents is prevented, the safety of equipment is enhanced, and moreover, the chain failure-sensing mechanism for self-propelled high-altitude operation platforms has the advantages of simple structure, low cost, reliability and high adaptability, and is convenient to manufacture.

Description

A kind of chain inefficacy induction mechanism

Technical field

The utility model relates to a kind of self-propelled aerial working platform chain inefficacy induction mechanism.

Background technology

At present, the flexible of most of self-propelled aerial working platform working arms promotes respectively to save the arm realization by telescopic oil cylinder and link chain mechanism.Fastening or other the direct fastening modes of double nuts structure are generally adopted in the movable adjustable side of self-propelled aerial working flat-bed link chain mechanism, and the chain major part is to ensconce the inside of working arm, if at this moment chain has broken, will be difficult to be found, this will greatly reduce the safety of self-propelled aerial working flat-bed.

Summary of the invention

The purpose of this utility model is to improve a kind of chain fork that is articulated and connected, shaft clevis band spiro rod section passes clamp, stop collar, spring, large washer, self lock nut, the shaft clevis termination is equipped with sensor relatively, simple in structure, self-propelled aerial working platform chain inefficacy induction mechanism easy to manufacture, esy to use, safe and reliable, cheap for manufacturing cost.

Technical solution of the present utility model is such: a kind of self-propelled aerial working platform chain inefficacy induction mechanism, comprise chain, shaft clevis, clamp, stop collar, spring, large washer, self lock nut, sensor, it is characterized in that shaft clevis one end and chain are hinged, another threaded end is passed clamp, stop collar, large washer and is tightened up with self lock nut, its termination is relative with sensor on coaxial line, mounting spring on the cylindrical barrel dliameter between stop collar and the large washer.

Shaft clevis is that head has the U-shaped draw-in groove, and has the screw rod with chain pivotally attached through hole.

Stop collar is T font and the roundlet cover that has the through hole that cooperates with the shaft clevis thread end at the center.

The utility model has the advantages that: the movable adjustable side of link chain mechanism is adopted and is had the precompressed fastening means of spring, and the chain rupture detecting sensor is installed nearby, after detecting the chain inefficacy, complete machine will shut down automatically at once, and simple in structure, easily manufactured, with low cost, safe and reliable, applicability is good.

Description of drawings

It is such that structure of the present utility model constitutes:

Fig. 1 is the scheme drawing with double nuts fastener chain mechanism.

Fig. 2 is that the utility model integral structure is installed assembling front view.

Fig. 3 is the utility model shaft clevis front view.

Fig. 4 is that the utility model shaft clevis is overlooked and added part sectional view.

Fig. 5 is the utility model stop collar front view.

Fig. 6 is the utility model stop collar birds-eye view.

Fig. 7 is the utility model spring front view.

Among Fig. 1～Fig. 7, chain (1), shaft clevis (2), clamp (3), stop collar (4), spring (5), large washer (6), self lock nut (7), sensor (8).

The specific embodiment

Most preferred embodiment of the present utility model is such: with reference to accompanying drawing 1～Fig. 7, the shaft clevis articulated chains of (2) one ends (1), another thread end then passes the through hole of clamp (3) and stop collar (4), the side that stop collar (4) end face is big is being pasted clamp (3), then on stop collar (4) outer ring, be inserted in spring (5), the thread end of following at shaft clevis (2) is inserted in large washer (6) again, allow large washer (6) paste spring (5) end face, at the thread end of shaft clevis (2) self lock nut (7) is screwed on then, be screwed to large washer (6) and be pressed onto till the stop collar (4), having the place of one section suitable distance to install sensor (8) from shaft clevis (2) threaded end at last.Simple in structure, easily manufactured, with low cost, safe and reliable, applicability is good.

Referring to Fig. 2, when spring (5) is pressed onto stop collar (4) at large washer (6), also be not forced into head.

Referring to Fig. 2, stop collar (4) is one and is used for restraining spring (5) radial-play and prevents that spring is forced into the roundlet cover of head.

Referring to Fig. 2, large washer (6) be one under self lock nut (7) effect, but the pressing plate of restraining spring (5) end float misalignment.

Referring to Fig. 3, Fig. 4, shaft clevis (2) is that a head has the U-shaped draw-in groove and has and the screw rod of chain (1) pivotally attached through hole.

Referring to Fig. 5, Fig. 6, stop collar (4) is one and is shaped as " T " font and has the roundlet cover that cooperates through hole with shaft clevis (2) thread end at the center.

Referring to Fig. 7, spring (5) is that two ends polish, and the steel spring of certain amount of compression is arranged.

The movable adjustable side of link chain mechanism is adopted and is had the precompressed fastening means of spring, and the chain rupture detecting sensor nearby is installed.Concrete scheme is as follows: shaft clevis (2) thread end that will be used for fixing the movable adjustable side of link chain mechanism before this passes the clamp (3) that is fixed on the basic arm or the through hole of bearing pin; then pass the stop collar (4) that is used for the restraining spring radial-play; the end that stop collar (4) end face is big is pasting clamp (3) or pin roll end face; the certain amount of compression spring (5) that has that then two ends is polished again is inserted in stop collar (the 4) (height that the height when requiring spring to compress fully overlaps less than T shape; will make that like this spring can not be pressed onto the end in the course of the work; help improving the life-span of spring); play pressing plate function large washer (6) with one then and be inserted in shaft clevis (2) thread end; pasting spring (5) end face; screw on a self lock nut (7) at thread end at last; being screwed to large washer (6) (at this moment can be pressed onto till stop collar (4) end face; spring is not forced into head); a sensor (8) nearby is installed simultaneously; when chain disconnects; the shaft clevis (2) that has initial tension of spring will launch away; run into sensor (8); make sensor (8) produce a control command; order self-propelled aerial working platform is auto-stop at once, has prevented unexpected generation.

The utility model is on the basis of original link chain mechanism, only need to have the precompressed fastening means of spring in the movable adjustable side employing of link chain mechanism, and the chain rupture detecting sensor is installed nearby, just can realize the detection that chain lost efficacy easily, prevented unexpected generation, improved the safety of equipment, and simple in structure, easily manufactured, with low cost, reliable, applicability is good.

The utility model does not limit use detecting in the inefficacy of self-propelled aerial working platform chain structure, may also extend in the chain inefficacy that detects construction machinery and equipments such as hoisting crane.

Claims

1. chain inefficacy induction mechanism, comprise chain, shaft clevis, clamp, stop collar, spring, large washer, self lock nut, sensor, it is characterized in that shaft clevis (2) one ends and chain (1) are hinged, another threaded end is passed clamp (3), stop collar (4), large washer (6) and is tightened up with self lock nut (7), its termination is relative on coaxial line with sensor (8), mounting spring (5) on the cylindrical barrel dliameter between stop collar (4) and the large washer (6).

2. according to the described a kind of chain inefficacy induction mechanism of claim 1, it is characterized in that shaft clevis (2) is that head has the U-shaped draw-in groove, and have and the screw rod of chain (1) pivotally attached through hole.

3. according to the described a kind of chain inefficacy induction mechanism of claim 1, it is characterized in that stop collar (4) is T font and the roundlet cover that has the through hole that cooperates with shaft clevis (2) thread end at the center.