CN202971446U

CN202971446U - Arm frame locking mechanism

Info

Publication number: CN202971446U
Application number: CN 201220608056
Authority: CN
Inventors: 孙生强
Original assignee: Suzhou Lanwang Machine Tools Technology Co Ltd
Current assignee: Suzhou Lanwang Machine Tools Technology Co Ltd
Priority date: 2012-11-18
Filing date: 2012-11-18
Publication date: 2013-06-05
Anticipated expiration: 2022-11-18

Abstract

The utility model discloses an arm frame locking mechanism. The arm frame locking mechanism is characterized in that a rectangular port is formed in the bottom surface of an upper arm formed by folding; a swing lock catch shaft seat is fixedly arranged on a lower arm below the rectangular port; the lower end of a swing lock catch is movably hinged on the swing lock catch shaft seat by using a pin roll; an oil cylinder base is fixedly arranged on the lower arm on the back side of a swing lock catch hook; the bottom of an oil cylinder is movably hinged on the oil cylinder base by using a pin roll; a piston rod of the oil cylinder is movably hinged at the waist position of the swing lock catch by using a pin roll; and two ends of a tension spring are fixedly connected with the swing lock catch and the lower arm. According to the arm frame locking mechanism disclosed by the utility model, the defects that the piston rod is easy to break off and a sealing element is easy to damage in the prior art can be overcome; and the arm frame locking mechanism has the advantages of reliability in locking and long service life.

Description

A kind of locking mechanism for arm support

Technical field

The utility model relates to a kind of locking mechanism, is specifically related to the locking mechanism for arm support up and down on a kind of lifting class vehicle.

Background technique

as everyone knows, the lifting structure of lifting class vehicle generally comprises two joints or the two above lift arms of joint, in the process of end-of-job transition, lift arm is to be stacked alternately on the shipping platform of vehicle, because mutual overlapping upper underarm is to connect by bearing pin from beginning to end, other position of upper underarm is without corresponding positioning means, so, in the process of moving, especially in high speed, jolt, easily cause danger in the situation of turning, to this, existing solution generally adopts the way of wire binding to fix, but, the defective of this localization method is obvious, this repeats no more again! existing technology also has employing oil hydraulic cylinder drive positioning means to realize the method for fixing, for example: China Patent No. is: 201020683260.0, patent name is " locking mechanism for arm support " disclosed technological scheme, although this technology has certain progress with the method that adopts the iron wire binding,, due to piston cylinder Bending stress in whole mechanism, not only easily fracture, simultaneously, also easily damage sealing mechanism under the effect of repeated stock power, easily cause the insecure defective of work.

Summary of the invention

The purpose of this utility model is: for the existing defects of existing locking mechanism for arm support, the utility model provides a kind of novel locking mechanism for arm support, overcomes the existing existing defects of locking mechanism for arm support.

the technological scheme that the above-mentioned purpose that realizes the utility model adopts is: described a kind of locking mechanism for arm support, it comprises: upper arm, swing snap close, bearing pin, pendulum lock buckle shaft seat, oil cylinder seat, oil cylinder, draught spring, underarm, it is characterized in that: formed upper arm bottom surface is shaped with manufacturer's mouth after folding, be mounted with pendulum lock buckle shaft seat on the underarm below rectangular mouthful, the lower end that swings snap close is hinged on pendulum lock buckle shaft seat actively with bearing pin, the upper end of described swing snap close is the crotch of " 7 " font, be mounted with oil cylinder seat on the underarm that swings the snap close crotch back side, described oil cylinder bottom is hinged on oil cylinder seat with bearing pin actively, described cylinder piston rod is hinged on the waist location that swings snap close actively with bearing pin, the two ends of draught spring are connected and fixed with swing snap close and underarm respectively, described draught spring has makes the pendulum lock fastener that the degrees of freedom that is rotated in a clockwise direction be arranged.

Beneficial effect: the utility model is due to after adopting said method, because oil cylinder is only given the strength that swings the snap close swing, the fastening of upper underarm is by swinging snap close fully, so, the utility model can overcome piston rod of the prior art and easily fracture, Sealing holds flimsy defective, has advantages of reliable lock, high life.

Description of drawings

Accompanying drawing is plan view of the present utility model.

Shown in figure: 1, upper arm; 2, swing snap close; 3, bearing pin; 4, pendulum lock buckle shaft seat; 5, oil cylinder seat; 6, oil cylinder; 7, draught spring; 8, underarm, 9, oblong aperture.

Embodiment

a kind of locking mechanism for arm support, it comprises: upper arm (1), swing snap close (2), bearing pin (3), pendulum lock buckle shaft seat (4), oil cylinder seat (5), oil cylinder (6), draught spring (7), formed upper arm (1) bottom surface is shaped with manufacturer's mouth (9) after folding, be mounted with pendulum lock buckle shaft seat (5) on the underarm (8) of the below of rectangular mouthful (9), the lower end that swings snap close (2) is hinged on pendulum lock buckle shaft seat (4) actively with bearing pin (3), the upper end of described swing snap close (2) is the crotch of " 7 " font, be mounted with oil cylinder seat (5) on the underarm (8) that swings snap close (2) the crotch back side, oil cylinder (6) bottom is hinged on oil cylinder seat (5) actively with bearing pin (3), oil cylinder (6) piston rod is hinged on the waist location that swings snap close (2) actively with bearing pin (3), the two ends of draught spring (7) are connected and fixed with swing snap close (2) and underarm (8) respectively, draught spring (7) has makes swing snap close (2) have the degrees of freedom that is rotated in a clockwise direction.

Claims

1. locking mechanism for arm support, it is characterized in that: be shaped with manufacturer's mouth (9) in upper arm (1) bottom surface, be mounted with pendulum lock buckle shaft seat (5) on the underarm (8) of the below of rectangular mouthful (9), the lower end that swings snap close (2) is hinged on pendulum lock buckle shaft seat (4) actively with bearing pin (3), the upper end that swings snap close (2) is the crotch of " 7 " font, be mounted with oil cylinder seat (5) on the underarm (8) that swings snap close (2) the crotch back side, oil cylinder (6) bottom is hinged on oil cylinder seat (5) actively with bearing pin (3), oil cylinder (6) piston rod is hinged on the waist location that swings snap close (2) actively with bearing pin (3), the two ends of draught spring (7) are connected and fixed with swing snap close (2) and underarm (8) respectively, draught spring (7) has makes swing snap close (2) have the degrees of freedom that is rotated in a clockwise direction.