Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Patent
1995-12-15
1998-06-16
Husar, John M.
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
241267, 241268, B02C 102
Patent
active
057657696
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of Invention
This invention relates to a method to adjust the position of the toggle block in a double toggle or single toggle jaw crusher, and a toggle block sliding device used therein.
2. Description of Prior Art
A jaw crusher is a typical crushing machine that can be used for the primary breaking of rocks as excavated. An example of a double toggle jaw crusher is shown in FIG. 3. Excavated rocks are scooped into the crushing cavity 12 formed between the fixed jaw 1 and the swinging jaw 11, and are broken by the impelling force of the swinging jaw.
The swinging jaw 11 is suspended from the swinging jaw shaft 13 as the fulcrum, and swings with the movement of the pitman 21 moving up and down with the rotation of the eccentric shaft 2, and the toggle mechanism on either side of pitman. In this case, a double toggle mechanism is formed from the jaw toggle plate 22 that connects the swinging jaw 11 and pitman 21, and the frame toggle plate 24 that connects the pitman 21 and toggle block 23.
A safety device to guard against uncrushable objects, and an adjustment device to adjust the gap between the fixed jaw 1 and swinging jaw 11, thereby controlling the degree of crushing, are set on the frame toggle plate side. This cavity width adjustment device slides the toggle block 23 back and forth by the movement of a wedge 25, and by means of the frame toggle plate 24, pitman 21, and jaw toggle plate 22, adjusts the forward and backward position of the swinging jaw 11.
A single jaw crusher has no pitman 21 nor jaw toggle plate 22, and the eccentric shaft 2 serves a dual function as the swinging jaw shaft 13.
DETAILED EXPLANATION OF INVENTION
The objective of this invention is to provide a method to adjust the position of a jaw crusher toggle block, and a device used for that method; wherein the device can adjust the cavity width over a wide range, and can be applied to a wide range of jaw crushers, including large models, without itself having to be enlarged.
As described, conventionally a wedge 25 is pushed in to slide the toggle block 23, but this configuration restricts the range of adjustment, and is difficult to apply to a large jaw crusher. To obtain a wider adjustment range, the dimensions of the sliding mechanism, including the wedge, would have to be enlarged, necessitating an enlargement of the entire jaw crusher configuration.
This invention is a novel method to adjust the position of the toggle block of a jaw crusher in which the toggle block supports one end of a toggle plate that is connected at the other end to the bottom of the swinging jaw; with said method using a device comprised of a displacement block that is positioned on the back face of the toggle block and moves in the same lateral direction as the toggle block, and a pair of hydraulic cylinders, connected to the toggle block at the two ends that lie perpendicular to its lateral direction of motion in a manner such that the cylinders expand or contract in the said lateral direction of motion of the toggle block; wherein the said displacement block is moved forward to displace the toggle block towards the toggle plate, and the hydraulic cylinders are contracted to further pull forward the toggle block, and seams are inserted into the gap that forms between the back face of the toggle block and the front face of the displacement block.
Further, this invention is a novel jaw crusher toggle block sliding device used as the device to adjust the position of the toggle block, in which the sliding device supports one end of a toggle plate that is connected at the other end to the bottom of the swinging jaw; wherein said device is comprised of a displacement block that is positioned on the back face of the toggle block and moves in the same lateral direction as the toggle block, and a pair of hydraulic cylinders, connected to the toggle block at the two ends that lie perpendicular to its lateral direction of motion in a manner such that the cylinders expand or contract in the said lateral direction of motion
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Husar John M.
Kotobuki Engineering & Manufacturing Co., Ltd.
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