JPS5912709B2 - A device that moves the side walls of a compacted type - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for displacing the side walls of a compaction mold, in particular for compacting coke beds.

In coke plants, the pulverized coal charge is compressed into a coke cake in a compaction mold, and this coke cake is then forced from the compaction mold into a furnace chamber by suitable charging equipment.

In order to avoid damage to the coke cake due to adhesion between the wall and the coke cake when pushing the coke cake out of the tamping mold, after the coke cake is compacted, the side walls of the tamping mold are is forced to move backwards somewhat.

For this purpose, known devices engage hinge mechanisms distributed in a uniform grid pattern on the movable side walls.

These hinge mechanisms are moved by corresponding horizontally arranged eccentric shafts, by means of which the movable side walls are entrained.

In this case, the eccentric shafts are driven by a common vertically arranged shaft through the worms, each of which engages in a worm gear provided on the eccentric shaft.

The drive shaft itself is driven by a gear motor.

However, this known device has the disadvantage that the drive technology is very sophisticated and its production costs are high.

Furthermore, this known drive type also has significant drawbacks in terms of operation.

In other words, in the known device it is virtually impossible to assemble the eccentric shafts and the hinge mechanism accurately so that all the eccentrics are located at the center point when the tamping mold is closed.

However, deflection of the movable side walls during compaction of the coke bed can only be reliably avoided if all the eccentrics are located at the center point.

Furthermore, the movable side walls may be damaged if the coking layer is already filled into the compaction mold before it is completely closed.

Since the drive motor's overload switch reacts relatively slowly, the drive is suddenly overloaded against the increased resistance, resulting in the weakest member in the drive chain, the movable The side wall will be damaged.

The object of the invention is to provide a simple and economical tamping mold side wall that avoids deflection of the movable side wall during coke cake compaction and damage to the movable side wall when closing the tamping mold. The purpose of the present invention is to provide a device for moving.

In order to solve this problem, in the configuration of the present invention, a working cylinder acts on an adjustment rod, via which a plurality of sector gears supported on a fixed point are rotated, each of these sector gears , is engaged with a gear attached to the eccentric shaft. With the configuration of the present invention, the drive mechanism for the movable side wall can be significantly simplified.

Furthermore, in the configuration of the present invention, simple and inexpensive members such as a cylinder, a sector gear having teeth on an end face, and a gear are used instead of expensive members such as a gear motor, a worm, and a worm gear.

By providing an overpressure valve, it can be reliably avoided that too high a pressure arises in the cylinder due to some disturbance, causing damage to the movable side wall or the adjustment mechanism due to excessively large forces.

The distance between the connection points at which the rocker arms of two adjacent sector gears connect with the adjustment rod is advantageously continuously variable to further adjust the angular positions of the eccentric parts of all eccentric shafts with respect to each other. be able to.

According to another embodiment of the invention, the eccentric shaft is divided into an intermediate shaft and an eccentric part, the intermediate shaft and the eccentric part being connected by a pawl clutch.

By means of this pawl clutch, the mutually adjacent eccentric parts and the intermediate shaft can be rotated very slightly in each case, depending on the tooth pitch of the pawl clutch.

Thereby, the distance between the two engagement points of the adjustment rod is adjustable (claim 2) and all eccentric parts are adjusted together with the hinge mechanism engaging the movable side wall. This makes it possible for all eccentric parts to be located at the center point when the compaction mold is closed, so that no deflection of the movable side walls occurs during compaction of the coal charge.

The invention will now be described in detail with reference to the drawings.

A hinge mechanism 10 engages the movable side wall 6 of the tamping die 18 in multiple planes.

All hinge mechanisms 10 in one plane are supported on an eccentric shaft 5.

One gear 3 is attached to each eccentric shaft 5,
Each gear 3 engages with a corresponding sector gear 4,
This sector gear 4 is held at a fixed point 13.

The swing arms 14 of the sector gear 4 are rotatably connected to the adjusting rod 2 and guided parallel to each other by the adjusting rod 2.

A working cylinder 1, for example a hydraulic cylinder, is engaged in the extended swinging arm 14a.

The stroke of the working cylinder 1 is the same as the stroke of the eccentric shaft 5.
The length of the lever of the swinging arm 14 and the transmission ratio between the sector gear 4 and the gear 3 are adjusted to correspond to a rotation of 0°, and furthermore, the eccentric shaft 5 rotates 180°, thereby reducing the eccentricity. The distance e or the moving distance e of the movable side wall 6 takes a value of approximately 30 mm.

In order to reliably avoid deflection of the movable side walls 6 when the coal charge 11 in the compaction mold 18 is compressed, all hinge mechanisms 10 and eccentric parts 7a must be removed when the compaction mold 18 is closed. must be located precisely at the point of consideration.

For this purpose, the position of the individual hinge mechanism 10 and the eccentric part 7 must be precisely adjusted.

This adjustment is sometimes carried out already after the assembly of the movable side wall 6 and the drive mechanism.

In the device according to the invention, this adjustment takes place in two stages.

First of all, when closing the side walls, all hinge mechanisms 10 located in the same support plane, ie along the eccentric axis 5, must be adjusted exactly to the desired point.

This is only possible because the eccentric shaft 15 is divided into the intermediate shaft 15 and the eccentric portion 7, and both 15 and 7 are connected via the pawl clutch 17, as described above. .

This is because it is only possible during assembly to easily and precisely adjust each hinge mechanism 10 to a desired point without affecting the adjacent hinge mechanism.

The adjustment precision obtained in this case corresponds to the tooth pitch of the pawl clutch 17.

If the pawl clutch 17 is not provided, the hinge mechanism 10
After alignment, assembly requires additional operations at points, such as drilling and insertion of pass-through pins;
Such operations also have to be carried out in each case after repairs on the movable side wall or the drive mechanism.

A fine mutual adjustment between the individual supporting planes or eccentric shafts 5 is then achieved by a corresponding adjustment of the meshing of the gearwheel 3 and the sector gear 4, i.e. the swing arm 14 of the sector gear 4 is moved to the adjusting rod 2.
This is achieved by a corresponding adjustment based on the adjustment of the displacement of the turnbuckle 16 provided between the individual connection points connecting the .

During operation of the tamping type, no adjustment or post-adjustment takes place and the pawl clutch 17 remains engaged at all times.

In the embodiment of FIG. 1, the piston rod of the working cylinder 1 engages in an elongated central rocker arm 14a.

The working cylinder 1 also has a swinging arm 1 at its support point.
4a, and is also connected for relative rotation and is protected against overload by an overpressure valve.

When the tamping mold 18 is closed, the piston rod of the working cylinder 1 is extended (position b).

To open the tamping mold 18, the piston rod is pulled into the working cylinder 1 (position a).

For clarity, the two upper drive trains are shown in FIG. 1 in their position with the piston rod extended, ie when the tamping die is closed, whereas the members of the lower drive train are shown in the position shown in FIG. That is, the sector gear 4a and the eccentric portion 7a are shown in a position corresponding to the open tamping mold 18.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the device according to the invention, and FIG. 2 is a diagram showing the relationship between the eccentric shaft and other members. 1... Working cylinder, 2... Adjusting rod,
3...Gear, 4,4a...Sector gear, 5...Eccentric shaft, 6.9...Side wall,
? , 7a... Eccentric body portion, 8... Compacting bottom, 10... Hinge mechanism, 11...
・Charging coal, 12... Bearing, 13...
Fixed point, 14° 14a... Swinging arm, 15...
...Intermediate shaft, 16...Turnbuckle, 17
・・・・・・Claw clutch, 18 ・・・Tamp type,
e... Eccentric distance or moving distance of the movable side wall, a, b... Position.

Claims (1)

[Claims] 1. A working cylinder 1 acts on an adjusting rod 2, and this adjusting rod 2
A plurality of sector gears 4 supported on a fixed point 13 are rotated via the rotor, and each of these sector gears 4 is engaged with a gear 3 attached to an eccentric shaft 5. , a device for moving the side walls of a compacted type. 2 The swinging arms 14 of two adjacent sector gears 4 are connected to the adjustment rod 2
2. The device according to claim 1, wherein the distance between the connecting points is variable. 3. Device according to claim 1, in which the eccentric shaft 5 is divided into an intermediate shaft 15 and an eccentric part 7. 4. The device according to claim 3, wherein the intermediate shaft 15 and the eccentric part 7 are connected by a pawl clutch 17. 5. The device according to any one of claims 1 to 4, wherein the maximum working pressure of the working cylinder 1 is limited.