JPS6014504Y2 - Mounting structure of protective plate for Joe crusher - Google Patents

Description

[Detailed description of the invention] The invention is based on the invention that the raw material supplied to the crushing chamber is formed between a fixed jaw plate attached to the front frame and a swinging jaw plate attached to the swinging jaw that swings around a support bearing. The present invention relates to a structure for attaching a protection plate to the swing jaw of a show crusher which is crushed by being clamped between both jaw plates to protect the swing jaw support bearing.

FIG. 1 is a side sectional view showing an example of a conventional show crusher. As shown in the figure, the show crusher is swingably supported by a fixed jaw plate 2 attached to the back of a front frame 1 and a support shaft 3 that rotates eccentrically. Swing jaw 4 that performs dynamic movement
A crushing chamber 6 with a V-shaped cross section is formed between the swinging jaw plate 5 attached to the front surface of the rocker, and the raw ore S sent from the raw ore pin (not shown) passes through the grizzly river 7 and is crushed into small pieces. After the rough stones are sorted, they are introduced into the crushing chamber 6 through the chute 8, crushed between the fixed jaw plate and the swinging jaw plate, and then released from the exit gap 9 between the two jaw plates. taken out.

Since this type of show crusher is used as a temporary crusher to crush large ores, the weight of the ores that are introduced is heavy (the ore that is input from the chute 8 into the crushing chamber 6 is If there is a direct collision with the support bearing 10 that supports it, there is a risk that the bearing or support shaft will be destroyed by the collision load, so a cast steel protection plate 11 is attached to the side of the support bearing at the entrance side of the crushing chamber. Damage to the bearing 10 and the support shaft 3 is prevented by receiving the impact exclusively by this protection plate.

However, in the conventional show crusher, the protection plate 11 is directly attached to the bearing 10, and the bearing 10 is directly fixed to the highly rigid show crusher swing jaw 4, so that the impact force acting on the protection plate 11 is transferred to the bearing 10. This was directly transmitted, causing the life of the bearing 10 etc. to be shortened.

The purpose of this invention is to prolong the life of the support bearing by providing a shock-absorbing function to the protective plate that is hit by the raw ores that are introduced into the crushing chamber, and swing the protective plate through a buffer member. This invention provides a mounting structure for a show crusher protection plate that is attached to the jaw.

Next, embodiments embodying the present invention will be described in detail with reference to FIG. 2 and the following drawings.

FIG. 2 is a side sectional view of a part of the swing jaw of a show crusher including a protective plate mounting structure according to an embodiment of the present invention, and FIG. 3 is a top view of the same.

In these figures, the swing jaw 4 is the flywheel 1.
It is swingably attached to a support shaft 15 that is eccentrically attached to a rotating shaft 14 that rotates coaxially with the rotary shaft 14, and its lower end is restricted from movement by a toggle plate 16. A swinging motion is performed around the support shaft 15 while reciprocating by eccentric rotation.

On the right side of the entrance of the crushing chamber 6 are a rotary bearing 17 for supporting the rotary shaft 14 integrated with the support shaft 15, and a support bearing 1 for swingably attaching the swing jaw 4 to the support shaft 15.
0 is provided, and the support bearing 10 constitutes a part of the swing jaw 4.

A protection plate 20 is attached to the side surface 18 of the support bearing 10 on the side of the crushing chamber through a synthetic rubber plate 19 which is a type of buffer member.
It is attached by 1.

Attach the bearing 10 and synthetic rubber 1 to the bolt 21 through the protective plate.
The protective plate 20 is attached to the support bearing 10 so as to be movable forward and backward in the thickness direction of the plate by tightening a nut 24 via a spring material 23 that protrudes to the back surface of the steel 22 interposed between the steel plates 22 and abuts the back surface of the steel plate 22. There is.

A regulating plate 2 is attached to the side of the support bearing 10 by a bolt 25.
6 is installed.

The distal end of the regulating plate 26 is in contact with the side surface of the protective plate 20, and restricts the lateral movement of the protective plate 20.

In the structure of the protection plate described above, the protection plate 20 is made of synthetic rubber 19
Since the rough stone being supplied to the crushing chamber 6 is attached to the support bearing 10 through the
0, it will be pushed by the protection plate 20 and the synthetic rubber 19
is deformed, the impact force is absorbed by the synthetic rubber 19, and the bearing 10,
17, the support shaft 15, and the rotation shaft 14, the impact force transmitted to the shaft 17, the support shaft 15, and the rotation shaft 14 is relieved.

・In the above embodiment, a case of a show crusher in which the support shaft itself causes a swinging motion in the swinging jaw was explained, but the present invention is applicable to a show crusher in which a separate rotating shaft causes a swinging motion in the swinging jaw. Applicable to

In the above embodiment, the bearing 10 of the impact force acting on the protection plate 20
．． In order to prevent direct transmission to 17, a rubber plate 19 is used as a buffer member, but such a buffer member is not limited to a rubber plate, and may include, for example, a large number of disc springs, spring washers,
A leaf spring or the like may be interposed between the bearing 10 and the protection plate 20.

Further, FIG. 4 shows a case in which a compression spring is used as a buffer member to swingably support the protection plate.

In the figure, the protection plate 20a is swingable in the direction indicated by an arrow 29 about the seat block 27, one end of which is elastically supported by a compression spring 28, and clockwise rotation is restricted by a tension bolt 30. has been done.

The protection plate 20a is pressed against the seat block 27 by the nut 32 screwed onto the bolt 31 and the protection plate 20a.
This is achieved by a spring member 34 inserted between the arm portion 33 of the

In this structure, when a rough stone collides with the protection plate 20a, the protection plate 20a rotates counterclockwise around the seat block 27 against the elastic force of the compression spring 28, and the impact force is alleviated.

Therefore, if an oil dashpot or the like is attached to the lower end of the tension bolt 30, the buffering effect can be further improved.

As described above, the present invention is designed to transport the raw material supplied to the crushing chamber formed between the fixed jaw plate attached to the front frame and the swinging jaw plate attached to the swinging jaw that swings around the support bearing. In the show crusher which crushes by squeezing between the jaw plates, a protection plate is attached to the swinging jaws via a buffer member, which is located on the entrance side of the crushing chamber and surrounds the side of the support bearing. Because of the mounting structure of the protective plate for the show crusher, even if a large ore rolling into the crushing chamber collides with the protective plate, the impact force is relieved by the deformation of the buffer member, supporting the support bearing and rotating shaft. This prevents damage to the rotary shaft bearing and furthermore to the support shaft itself, thereby extending the life of the show crusher.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a conventional show crusher, FIGS. 2 and 3 are side sectional views and top views of a show crusher including a protective plate mounting structure according to an embodiment of the present invention, and FIG. 4 is a side sectional view of a conventional show crusher.
It is a schematic side sectional view of the show crusher which shows another Example. 1...Front frame, 2...Fixed jaw plate, 4...Swing jaw, 5.
... Swing jaw plate, 6 ... Crushing chamber, 19, 28 ... Buffer member, 20, 20a
・・・・・・Protection board.

Claims (1)

[Scope of utility model registration request] A fixed jaw plate attached to the front frame,
In a show crusher that crushes the raw material supplied to a crushing chamber formed between a swinging jaw plate attached to a swinging jaw that swings around a support bearing, the raw material is clamped between both jaw plates and crushed. A structure for mounting a protection plate for a show crusher, characterized in that a protection plate on the side and surrounding the side of the support bearing is attached to the swing yaw via a buffer member.