CN201644136U

CN201644136U - Single-pendulum type drag-link mechanism spring seat

Info

Publication number: CN201644136U
Application number: CN2010201574918U
Authority: CN
Inventors: 汪炳宏
Original assignee: WENSHAN GENERAL MACHINERY MANUFACTURING Co Ltd
Current assignee: WENSHAN GENERAL MACHINERY MANUFACTURING Co Ltd
Priority date: 2010-04-13
Filing date: 2010-04-13
Publication date: 2010-11-24
Anticipated expiration: 2020-04-13

Abstract

A single pendulum type drag-link mechanism spring seat comprises a transverse drag link (4), concave spring seat pad (1) with the inner bore being a longitudinal waist-shaped hole, a convex spring washer (2) with the convex end abutted in the countersunk of the concave spring seat pad (1), and a spring assembled on the convex spring washer (2), which are sleeved on the drag link in sequence, wherein the countersunk of the concave spring seat pad (1) is in a horizontal V shape, the convex head of the convex spring washer (2) is a horizontal V-shaped convex head, the V-shaped convex head is abutted in the V-shaped countersunk, and the included angle (a) of the V-shaped countersunk is bigger than that of the V-shaped convex head (b). The spring seat of utility model has good self-centering capability and small friction force, thereby greatly reducing the flexural stress of the drag link, prolonging the service life, and reducing the fatigue fracture rate of the drag link.

Description

A kind of mono-pendulum type drag link mechanism spring base

Technical field

The utility model relates to a kind of mono-pendulum type drag link mechanism spring base technical field of structures of jaw crusher.

Background technology

Mono-pendulum type drag link mechanism spring assembly is parts of jaw crusher indispensability, effect is that it is when doing simple harmonic motion with the jaw arm, at any time the jaw arm is held with fagging and be close to the reaction impulsive force that the spring on it produces when then absorbing pull bar axial displacement and broken material.This device is not if having or damages, and the jaw arm will be in and freely hang operating condition, loses " jaw breaks " and moves.During the jaw crusher running, there is the motion of both direction in the pull bar of this device: the one, and be that simple harmonic motion is done with the jaw arm in the center of circle with convex-concave spring base contact point; The 2nd, axially move along self axis.Corresponding, pull bar is subjected to the effect of both direction power: the one, and be fulcrum with convex-concave spring base contact point, be the arm of force with fulcrum to pull bar is connected axis with jaw arm hinge distance, be the bending stress of active force with the frictional force of convex-concave spring base contact point; The 2nd, along the axial tension of pull bar self axis.Under the alternation effect of these two power, the intersection brisement that pull bar contacts with protruding spring washer from recessed spring seat cushion easily causes disorderly closedown to take place frequently.The drag link spring bumper of prior art; a kind of is that recessed spring seat cushion and protruding spring washer adopt the plane contact structure; its pull bar self-centering is poor; spring circumference discontinuity equalization; easily produce fatigue damage; contact-making surface frictional force is bigger, and the restraint that the pull bar alternation is subjected in the motion is also bigger, easily causes the tired brisement of pull bar to cause shutdown.Also have a kind of drag link spring bumper, recessed spring seat cushion and protruding spring washer adopt and select the sphere contact structures for use, remain the face contact, and frictional force is still bigger, and the alternate stress that pull bar is subjected to is also bigger, also can shut down because of tired brisement at last.

Summary of the invention

The purpose of this utility model is to solve the problem of prior art existence and provides a kind of self-centering good, frictional force is little, can greatly reduce the suffered bending stress of pull bar, prolong pull bar service life, reduce the single arm type drag link mechanism spring base of pull bar fatigue fracture.

The purpose that the utility model is is achieved through the following technical solutions:

A kind of mono-pendulum type drag link mechanism spring base, comprising horizontal pull bar, being sleeved on endoporus on the pull bar successively is that recessed spring seat cushion, the plush copper end of vertical mounting hole supports protruding spring washer in the recessed spring seat cushion deep gouge, is assemblied in the spring on the protruding spring washer, the deep gouge of described recessed spring seat cushion is that the plush copper of horizontal V-shaped deep gouge, protruding spring washer corresponds to horizontal V-shaped plush copper, the V-type plush copper is supported in the V-type deep gouge, and the angle of V-type deep gouge is greater than the angle of V-type plush copper.

The utility model is changed into linearity V-type combining structure with recessed spring seat cushion with the contact structures of protruding spring washer; both played the self centering effect of pull bar; the spring absorption of K is to the energy of motion; the circumference discontinuity equalization; the phenomenon of fatiguability damage will greatly be alleviated; can realize that again convex-concave spring base contact position is linear contact; reduce friction; abdicate the angle of pull bar N on the structure more greatly to swing in addition; can greatly reduce the suffered bending stress of pull bar, reduce frequency because of pull bar fatigue fracture stopping accident.

Further set forth content of the present utility model below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the structural representation of the recessed spring seat cushion of the utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the structural representation of protruding spring washer;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is that the utility model is installed on the schematic diagram on the jaw crusher.

The specific embodiment

As shown in the figure, the utility model comprises that horizontal pull bar 4, the recessed spring seat cushion 1, the plush copper end that are sleeved on the pull bar successively support the interior protruding spring washer 2 of recessed spring seat cushion deep gouge, are assemblied in the spring 3 on the protruding spring washer 2, and recessed spring seat cushion 1 is fixedlyed connected with jaw crusher body 5.The endoporus 1a of recessed spring seat cushion 1 is mounting hole longitudinally, can easily pass pull bar and make way for pull bar to swing up and down.The Connection Block 7 of protruding spring washer 2 pull bar front ends is installed on drawing on the ear of jaw crusher jaw arm 9.The deep gouge of recessed spring seat cushion 1 is that the plush copper of horizontal V-shaped deep gouge, protruding spring washer 2 corresponds to horizontal V-shaped plush copper, and the V-type plush copper is supported in the V-type deep gouge, plays the self centering effect of pull bar.The angle a of V-type deep gouge is greater than the angle b of V-type plush copper, to abdicate the angle that pull bar swings up and down more greatly.

During assembling, for the length direction of the interior mounting hole of guaranteeing recessed spring seat cushion 1 in the upright position, the V-type deep gouge is at horizontal level, adopt earlier positioning fixture with recessed spring seat cushion 1 welding on body 5, then pull bar Connection Block 7 is contained in the drawing on the ear of jaw crusher jaw arm 9, again pull bar 4 is passed from outside to inside the mounting hole and 7 fastening connections of pull bar Connection Block of recessed spring seat cushion 1, align the V-type deep gouge of recessed spring seat cushion 1, overlap the protruding spring washer 2 of packing into, the V-type plush copper of protruding spring washer 2 also is in the V-type deep gouge that horizontal level supports recessed spring seat cushion 1, overlap the spring 3 of packing at pull bar 4 successively at last, spring compression packing ring 6, the double nut 8 of adjusting and fastening usefulness is promptly finished whole assembly process.

The utility model can be in original jaw crusher general structure, installation dimension and position and method is constant, do not increase and decrease under the situation of part and directly use, and not only can not increase the manufacturing cost of jaw crusher, also can reduce the spoilage of drag link mechanism greatly.

The utility model can be used for jaw crusher, also can be used for the similar drag link mechanism of miscellaneous equipment.

Claims

1. mono-pendulum type drag link mechanism spring base, comprising horizontal pull bar (4), being sleeved on endoporus on the pull bar successively is that recessed spring seat cushion (1), the plush copper end of vertical mounting hole supports protruding spring washer (2) in recessed spring seat cushion (1) deep gouge, is assemblied in the spring (3) on the protruding spring washer (2), it is characterized in that, the deep gouge of described recessed spring seat cushion (1) is that the plush copper of horizontal V-shaped deep gouge, protruding spring washer (2) corresponds to horizontal V-shaped plush copper, the V-type plush copper is supported in the V-type deep gouge, and the angle of V-type deep gouge (a) is greater than the angle (b) of V-type plush copper.