CN2250283Y

CN2250283Y - Equal load mechanical amplitude limiter

Info

Publication number: CN2250283Y
Application number: CN 96231346
Authority: CN
Inventors: 李树彬
Original assignee: XUZHOU ENGINEERING MACHINERY INST
Current assignee: XUZHOU ENGINEERING MACHINERY INST
Priority date: 1996-02-17
Filing date: 1996-02-17
Publication date: 1997-03-26
Anticipated expiration: 2006-02-17

Abstract

The utility model discloses an equal-load mechanical type amplitude limiter which mainly comprises a one-node arm, a two-node arm, a turn table and an oil cylinder, wherein, a hole is arranged on a bottom plane on the left end of the one-node arm, and one angle of a triangular plate is installed on the edge of the hole; an inclined plate is welded on the bottom plane of the two-node arm, and a rod is installed on the other angle of the triangular plate and is in sliding connection with the inclined plate on the bottom plane of the two-node arm; the third angle of the triangular plate is connected with a pull head, the other end of the pull head is connected with a pull rod, the other end of the pull rod extends to the right end of the one-node arm, an electric apparatus box is installed on the right end of the pull rod, and a cam is installed on the turn table. The amplitude limiter has the advantages of simple structure, convenient debugging and maintenance, good repeatability, safety and reliability.

Description

Etc. load mechanical type amplitude limiter

The utility model relates to a kind of amplitude limiter, the amplitude limiter on a kind of specifically aerial platform.

The amplitude limiter that uses on the aerial platform is the restriction of electronic type amplitude at present, and it is by the sensor that is installed on a joint arm, the two joint arms signal to be passed to computing machine, and controls the amplitude of a joint arm by output one control signal after the COMPUTER CALCULATION.This amplitude limiter is afraid of moist, non-refractory and cost height, and maintenance difficult, debugging is complicated.

The purpose of this utility model is that a kind of be not afraid of humidity, high temperature resistant and load mechanical type amplitude limiter such as cost is low will be provided.

The purpose of this utility model is to realize like this, on the baseplane of aerial platform one joint arm left end, a hole is arranged, one jiao of triangular plate is installed on the edge in hole, on the baseplane of two joint arms, be welded with a swash plate, on another angle of triangular plate a bar is installed, swash plate sliding block joint on bar and the two joint arm baseplanes, be connected with pull head on the third angle of triangular plate, the pull head other end is connected with pull bar, the pull bar other end extends to the right-hand member of a joint arm, and the electrical equipment box is installed on the pull bar right part, a cam is installed on turntable.

Owing to adopted such scheme, when the elevation angle that aerial platform is lifted arm surpasses the scope of load capacity or length that two joint arms stretch out and surpasses the scope of load capacity, by triangular plate pull bar is promoted to right-hand member, the moving contact of electrical equipment box bumps on the cam that is installed on the turntable, the electrical equipment box is exported a control signal propulsion source is cut off, thereby guaranteed the aerial platform trouble free service, because this amplitude limiter adopts mechanical system to realize its amplitude restriction, so it is not afraid of tide temperature, high temperature resistant.This amplitude limiter is simple in structure, debugging, easy to maintenance, and it is good, safe and reliable to repeat performance.

Be described further in conjunction with the embodiments with reference to the accompanying drawings below.

Load mechanical type amplitude limiter constructionals drawing such as Fig. 1.

Load mechanical type amplitude limiter A such as Fig. 2 are to view.

(1) two joint arm, (2) one joint arms, (3) bar, (4) swash plate, (5) connection seat, (6) limiting stopper, (7) spring, (8) pipe clamp, (9) turntable, (10) oil cylinder, (11) triangular plate, (12) column cap, (13) pull bar, (14) electrical equipment box, (15) cam among Fig. 3.

On the edge in the hole on aerial platform one joint arm (2) the left end baseplane, a jiao an of triangular plate (11) is installed among the figure by connection seat (5), two the joint arms (1) be inserted in one the joint arm (1) cavity in can move freely, welding one swash plate (4) on two joint arm (1) baseplanes, one bar (3) is installed on another angle of triangular plate (11), bar (3) and two swash plate (4) sliding block joints that save on arm (1) baseplanes, connect pull head (12) on the third angle of triangular plate (11), pull head (12) other end cylinder lever connecting rod (13), pull bar (13) other end extends to the right-hand member of a joint arm (2), pull bar (13) is by several pipe clamps (8) clamping, pipe clamp (8) is fixed on joint arm (2) baseplane, be fixed with limiting stopper (6) in the left part of pull bar (13), be with spring (7) on the pull bar (13) between limiting stopper (6) pipe clamp (8) adjacent with right-hand member.Electrical equipment box (14) is installed in right part at pull bar (13), between electrical equipment box (14) and the pull bar (13) angle is arranged, the right-hand member of one joint arm (2) is connected with turntable (9) upper end, cam (15) is installed on the inclined-plane of turntable (9), and the installation site of cam (15) is on the path of motion of electrical equipment box (14) moving contact.On turntable (9) inclined-plane and between joint arm (2) middle part oil cylinder (10) is being installed.

Claims

1, load mechanical type amplitude limiter such as a kind of, mainly comprise a joint arm, two joint arms, turntable, oil cylinder is characterized in that: on the baseplane of a joint arm left end hole is arranged, triangular plate is installed on the edge in hole one jiao, on the baseplane of two joint arms, weld swash plate, one bar is installed on another angle of triangular plate, swash plate sliding block joint on bar and the two joint arm baseplanes, connect pull head on the third angle of triangular plate, pull head other end cylinder lever connecting rod, the other end of pull bar extends to the right-hand member of a joint arm, and the electrical equipment box is installed on the pull bar right part, cam is installed on turntable.

2, load mechanical type amplitude limiter such as according to claim 1, it is characterized in that its pull bar is by several pipe clamp clampings, pipe clamp is fixed on the joint arm baseplane, at the left part of pull bar fixed limit piece, is with spring on the pull bar between the adjacent pipe clamp of limiting stopper and right-hand member; The installation site of cam is on the path of motion of electrical equipment box moving contact.