CN201634352U

CN201634352U - Anti-collision device for cab of aerial work platform

Info

Publication number: CN201634352U
Application number: CN 201020022596
Authority: CN
Inventors: 蔡雷; 耿德福; 曾清
Original assignee: Xuzhou Handler Special Vehicle Co Ltd
Current assignee: Xuzhou Handler Special Vehicle Co Ltd
Priority date: 2010-01-15
Filing date: 2010-01-15
Publication date: 2010-11-17
Anticipated expiration: 2020-01-15

Abstract

An anti-collision device for a cab of an aerial work platform comprises an arm support position detecting mechanism and a motion control mechanism and is characterized in that the arm support position detecting mechanism is internally provided with three detection switches, wherein the first detection switch is arranged near the articulated point of a turntable and an arm support and keeps a distance of 30mm with the downmost section of arm; the second and third detection switches are respectively arranged on two end points of a 70-degree sector on a covering piece of a rotating support; and the outputs are respectively connected with control coils of three relays in the motion control mechanism. Contacts of the three relays form a logic control circuit which respectively controls the left rotating control relay, the right rotating control relay and the bent arm variable-amplitude reduced control relay. The utility model can prevent the vicious collision of the arm and the cab owing to misoperation; meanwhile, the device has the advantages of compact combination, simple structure, lower cost and practical use.

Description

Aerial platform operator's compartment collision prevention device

Technical field

The utility model relates to a kind of aerial platform operator's compartment collision prevention device.

Background technology

The jib of aerial platform can occur in the course of the work with car body itself bump may, be called for short " decreasing certainly ", device deployment scenarios according to car load has a variety of forms from decreasing, but commonplace form is jib and operator's compartment to bump, might cause the damage of operator's compartment, seriously can cause casualties.The operator's compartment anticollision that manufacturers more of the prior art do all increases in some intelligence control systems, utilizes the detection data via controller of coder and angular transducer to calculate that the output control command realizes.Cost is than higher, and structure is more complicated also.

Summary of the invention

In order to solve the problem of above-mentioned aerial platform working arm and operator's compartment collision, the utility model provides a kind of aerial platform operator's compartment collision prevention device, and this device can prevent to cause because of maloperation the pernicious collision of arm and operator's compartment.Simultaneously, this device is in conjunction with tight, and simple in structure, cost is lower, and is practical.

The scheme of finishing the foregoing invention task is, a kind of aerial platform operator's compartment collision prevention device, form by arm support position testing agency and action control mechanism, it is characterized in that, be provided with three detector switches in the described arm support position testing agency, the installation site of these three detector switches is: first detector switch is arranged near the hinge place of turntable and jib, and the distance that saves arm with bottom one is 30mm, sees Fig. 2; Second, third detector switch is separately positioned on two fan-shaped end points of 70 degree on the cover panel of pivoting support, sees Fig. 3.The output of these three detector switches connects the control coil of three relays in the action control mechanism respectively; First detector switch is controlled first relay; Second detector switch is controlled second relay; The 3rd detector switch is controlled the 3rd relay; The contact of described three relays is formed a logic control circuit: wherein, in the control circuit of aerial platform jib, the normally closed interlock parallel control of the normally open contact of first relay and second relay left side revolution control relay; The normally closed interlock parallel control right-hand rotation control relay of the normally open contact of first relay and the 3rd relay; Control relay falls in the normally open contact parallel control folding arm luffing with first relay after the normally closed interlock of second relay is connected with the normally closed interlock of the 3rd relay.

The arm support position that is divided into the utility model detects and two parts of action control.The test section is by a check-out console, and three detector switch adapter plates and three detector switches are formed; Control part is barricaded as a logic control circuit by three relays.

The utility model has following prioritization scheme:

Also be provided with and the cooresponding check-out console of described three detector switches; Two shared check-out consoles in three detector switches, the another one detector switch detects by jib.

The installation site of described three monitoring switches all is placed with the buffering surplus, and this buffering surplus is made as 400mm～500mm.

The utility model is to realize like this, analyze the position that arm is possible and operator's compartment collides in advance, be placed with certain buffering surplus according to this position, set the position of detector switch, the buffering surplus generally is made as 400mm-500mm (surplus is put and lacked the collision that may cause at extraordinary state underarm and operator's compartment, and how surplus has put effective range of use that can reduce arm).When jib is higher than operator's compartment, can realize 360 degree full circle swingings, when jib is lower than operator's compartment, only can realize the part revolution except that cab area.

Description of drawings

Fig. 1 is the utility model logic circuit structure scheme drawing;

Fig. 2 is the utility model monitoring switch position scheme drawing;

Fig. 3 is the birds-eye view of Fig. 2.

The specific embodiment

Embodiment 1, with reference to Fig. 1, Fig. 2, Fig. 3:

The utility model logic analysis, with reference to Fig. 1 electrical schematic diagram, when jib is higher than operator's compartment 450mm place, ST9 triggers, the K9 actuating of relay, this moment, the revolution action normally was not subjected to the restriction of other factors; When jib was lower than operator's compartment, the jib K7 actuating of relay to apart from operator's compartment 450mm time of turning left, left side revolution action stopped (can right-hand rotation).The K8 actuating of relay when jib is turned right extremely apart from operator's compartment 450mm, the right-hand rotation action stops (can left turning round).Can only drop down onto apart from 450mm place, operator's compartment top at operator's compartment top jib.

Near the installation site of switch with reference to Fig. 2 and Fig. 3.Fig. 2 signal be the hoist detection (the 1st, jib detector switch ST9 and mount pad) of direction of jib; What Fig. 3 illustrated is the detection of jib gyratory directions.The 2nd, revolution check-out console (abbreviation check-out console); The 3rd, revolution detector switch ST7 and ST8.

Claims

1. aerial platform operator's compartment collision prevention device, form by arm support position testing agency and action control mechanism, it is characterized in that, be provided with three detector switches in the described arm support position testing agency, the installation site of these three detector switches is: first detector switch is arranged near the hinge place of turntable and jib, and the distance that saves arm with bottom one is 30mm; Second, third detector switch is separately positioned on two fan-shaped end points of 70 degree on the cover panel of pivoting support; The output of these three detector switches connects the control coil of three relays in the action control mechanism respectively; First detector switch is controlled first relay; Second detector switch is controlled second relay; The 3rd detector switch is controlled the 3rd relay; The contact of described three relays is formed a logic control circuit: wherein, in the control circuit of aerial platform jib, the normally closed interlock parallel control of the normally open contact of first relay and second relay left side revolution control relay; The normally closed interlock parallel control right-hand rotation control relay of the normally open contact of first relay and the 3rd relay; Control relay falls in the normally open contact parallel control folding arm luffing with first relay after the normally closed interlock of second relay is connected with the normally closed interlock of the 3rd relay.

2. aerial platform operator's compartment collision prevention device according to claim 1 is characterized in that, described three detector switches all adopt near switch.

3. aerial platform operator's compartment collision prevention device according to claim 1 and 2 is characterized in that, described three detector switches all are to fixedly mount by the detector switch mount pad.

4. aerial platform operator's compartment collision prevention device according to claim 3 is characterized in that, also is provided with and the cooresponding check-out console of described three detector switches; Two shared check-out consoles in three detector switches, the another one detector switch detects by jib.

5. aerial platform operator's compartment collision prevention device according to claim 4 is characterized in that the installation site of described three monitoring switches all is placed with the buffering surplus, and this buffering surplus is made as 400mm～500mm.