JPS5835743B2 - Buffer device for the upper part of the fixed teeth of the jaw crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shock absorbing device for the upper portion of immovable teeth of a show crusher T/C for crushing objects such as rocks and concrete lumps.

In a conventional show crusher, a nearly vertical immovable tooth is fixed between both side frames, and a movable tooth that extends obliquely upward from below the immovable tooth is arranged relative to the immovable tooth. g. A large piece of material to be crushed is placed above the opening between both teeth, and the motion of the movable teeth relative to the fixed teeth crushes the material to be crushed into small pieces. It is well known that the liquid is discharged from an opening.

In the above-mentioned show crusher, the size of the input port for the material to be crushed is limited, so relatively large chunks of material to be crushed must be roughly broken before being fed into the show crusher 5, which causes noise and Although this would increase labor costs, in order to solve this problem, the fixed tooth was divided into two parts, upper and lower, so that the upper part of the fixed tooth could be moved horizontally and fixed there. What you did is
This method has already been proposed by the inventor of this invention (Japanese Patent Laid-Open No. 7667/1983).

According to this proposal, if the upper part of the immovable teeth is moved to a position relatively distant from the immovable teeth and fixed there, relatively large chunks of material to be crushed can also be thrown into the opening of the show crusher and immovable. It can be roughly divided between the upper part of the tooth and the upper part of the opposing movable tooth.

The coarsely cracked material, which was relatively small at the time of input, is placed between the lower part of the stationary tooth and the lower part of the movable tooth, which is opposite and relatively close to it. further crushed.

However, in the show crusher proposed above, the force such as the impact force generated during crushing such as rough splitting is movably arranged and therefore acts on the upper part of the immovable tooth which is not fixed to the machine frame. Further, the upper portion acts on the drive device for moving the show crusher or the side wall guiding the show crusher, and as a result, the show crusher is subject to severe wear and tear, impeding its operation and also causing vibrations, noise, etc.

The purpose of this invention is to eliminate these drawbacks.

To achieve this object, the present invention provides a wedge member that is pushed out laterally by a spring on both sides of the upper portion of the immovable tooth, and a recess provided with an inclined surface that can be engaged with the wedge member on the inner surface of the both side walls. It is characterized by having the following.

In this case, it is desirable to provide an actuation mechanism for pulling back the wedge member from the recess while resisting the action of the spring.

According to this structure, the upper part of the immovable tooth can be supported by the side wall via the spring by the wedge action of the wedge member, so that the force applied to this upper part during crushing is sufficiently buffered by the spring. be done.

If the spring is pulled back, the upper part of the immovable tooth can be moved without any problem.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, a substantially vertical stationary tooth 2 and a movable tooth 3 that extends obliquely upward from below are disposed between the machine frame 1.

The movable tooth 3 is supported on the machine frame 1 by a support rod 4 at its lower end, and is constantly pulled toward the end of the machine frame 1 (towards the right) by a spring 5 at its lower end.

Specifically, the end of the support rod 4 on the machine frame side and the end of the spring 5 on the machine frame side are attached by a wedge mechanism 6 to a holding frame 7 that can be adjusted horizontally with respect to the machine frame 1, whereby the immovable tooth 3 The degree of opening of the lower end of the opening 8 between the two can be adjusted.

The upper end of the movable tooth 5 is connected to a hydraulic cylinder 10 via a lever 9, and swings when the hydraulic cylinder is actuated.

Due to this rocking movement and because of the arrangement of the support rod 4 and the spring 5 as described above, the movable tooth 3 as a whole performs a crushing movement with respect to the fixed tooth 2.

Instead of lever 8 and hydraulic cylinder 0, variants such as those shown in FIGS. 3 and 4 can also be used.

In this case, the upper end of the moving tooth 3 is connected to a shaft 1 having a power transmission pulley 11 and a flywheel 12 at both ends.
It is eccentrically attached to the eccentric portion 14 of No. 3, and thus performs a circular movement in response to the rotational movement of the shaft 9.

With this arrangement as well, the movable teeth 3 as a whole achieve a crushing movement with respect to the fixed teeth 2.

Referring again to FIGS. 1 and 2, the immovable tooth 2
is divided into an upper part 2a and a fixed lower part 2b, and the upper part 2ai is fixed to the rear end part 15 of the machine frame 1.
In the illustrated example, it is fixed to the end of a plunger that reciprocates in a hydraulic cylinder 6.17 (two in the illustrated example), and is fixed at an appropriate position by sliding reciprocating along an appropriate guide by the action of the hydraulic cylinder. be done.

In FIG. 1, the adjustment position in which the upper part 2a is retracted and the upper part of the opening 8 is wide open as indicated by 18 is shown by a solid line, and the upper part 2a is advanced and the lower part 2bl/7m
The adjustment position where the adjustment position is substantially straight is indicated by the broken line 2a /r'
l: To be done.

5 and 6 show a modification of the drive mechanism of the upper part 2a of the stationary tooth.

In this, a threaded rod 21 that engages with a nut member 20 fixed to an H-shaped member 19 attached to the upper portion 2a of the fixed tooth is rotatably supported by its unthreaded portion, and is connected to a thrust receiver 22 and a driven gear. It has 23.

This gear 23 is drivingly connected to a reversible motor 25 via a suitable gear transmission 24.

The upper portion 2a moves forward and backward by the operation of the reversible motor 25.

Reference numeral 26 shown in FIG. 1 indicates a grid feeding mechanism at the lower end of the opening 8.

A particularly important feature of the invention is that horizontally extending grooves 29 forming recesses are formed in the inner surfaces 28 of the side walls 27 that extend over the machine frame 1.

Groove 29 is formed in a wedge-shaped cross section with sloped slopes 30 as shown in FIG.

Among them, FIG. 6 is a highly illustrative diagram, and an example of the arrangement, shape, etc. of the constituent members is shown schematically.

On both sides of the upper portion 2a of the immovable tooth, wedge members 31 having a shape and arrangement capable of contacting the wedge-shaped cross section of the spring 29 are attached so as to be able to slide laterally.
The spring 32 is arranged so as to be able to protrude laterally from the upper part 2a under the action of the spring 32 and
It is possible to retreat laterally from the protruding position while resisting the action of

<Rust member 31, spring 32-J? and a hydraulic cylinder are positioned as shown at 34 in FIG.

When the upper part 2a of the fixed tooth is moved to the desired position and fixed there, the hydraulic cylinder 33 is deactivated and the wedge member 31 is wedged into the groove 29 and engaged under the action of the spring 32. It is tightened against this.

In this case, the force exerted on the upper part 2a by the crushing action is damped by the spring 32.

The recess 29 does not need to be formed in a groove, but may be provided only at the location where the upper part 2a is placed, and the recess 29
Although shown as a compression spring, it can also be configured as a tension spring and arranged to have a similar effect, and the hydraulic cylinder 33 can also be replaced by a separate actuating device, such as a motor.

[Brief explanation of drawings]

FIG. 1 is a longitudinal vertical sectional view of an embodiment of the show crusher;
Figure 2 is a plan view of the show crusher shown in Figure 1;
The figure is a partial view showing a modification of the drive mechanism for the movable teeth of the show crusher, Fig. 4 is a view showing the shaft device included in the part shown in Fig. 3, and Fig. 5 is the upper part of the stationary teeth of the show crusher. Partial longitudinal vertical cross-sectional view showing the deformation of the drive device, No. 6
The figure is a plan view of the part shown in FIG. 5, and FIG. 7 is a highly schematic cross-sectional view of the damping device in the upper portion of the fixed teeth. In the drawing, 2 is a fixed tooth, 2a is an upper part of the fixed tooth,
2b is the lower part of the fixed tooth, 3 is the movable tooth, 27 is the side wall, 28
is its inner surface, 29 is a groove forming a recess, 30 is a slope, 3
1 is a wedge member, 32 is a spring, and 33 is a hydraulic cylinder constituting an operating mechanism.

Claims (1)

[Claims] 1 has a nearly vertical immovable tooth and an obliquely disposed movable tooth that opposes it, and the immovable tooth is divided into two parts, upper and lower, and the upper part of the immovable tooth is horizontally arranged between both side walls. In a show crusher that can be moved to and placed there,
A wedge member that is pushed out laterally by the action of a spring is provided on both sides of the upper portion of the immovable tooth, and a recess with a slope that can be engaged with the wedge member is provided on the inner surface of the both side walls. Buffer device 2 for the upper part of the immovable teeth of the show crusher
The shock absorber according to claim 1, further comprising an actuation mechanism that pulls the wedge member back from the recess while resisting the action of a spring.