JPS59120314A - Chain conveyor type cooling bed - Google Patents

Abstract

PURPOSE:To use the same cooling bed in common by disengaging a rotary sprocket from a fixed sprocket by moving an interlocking member in its axial direction, and changing properly a transporting pitch in correspondence with the size of a material to be cooled. CONSTITUTION:An interlocking member 15 is moved in its axial direction by actuating a cylinder, to disengage a claw 16 provided to the member 15 from a claw 10 of a sprocket 3. After rotating the sprocket 3 in the normal direction by a prescribed angle by a driving device through a driving shaft 8; an operating lever 21 is rotated by reversely actuating the cylinder to engage the claw 16 of member 15 with the claw 10 of sprocket 3. A phase deviation of the prescribed angle is produced between the rotated sprocket 3 and a stationary sprocket 3'; as a result, rollers 6, 6' provided respectively to roller chains 2, 2' for every two link of them and at the same position are shifted from each other by one link to halve the transporting pitch, thereby a cooling bed adequate to a small diametral material is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chain conveyor-type cooling bed for cooling high-temperature steel pipes or round bars processed in upstream equipment to a predetermined temperature while being transported to downstream equipment. The object of the present invention is to provide a cooling bed whose conveyance pitch can be changed appropriately depending on the size of the coolant.

Conventionally, in this type of cooling bed, the conveyance pitch of the chain is set based on the maximum diameter of the material to be cooled, and it is difficult to convey and cool small-diameter materials using this cooling bed for large-diameter materials. As a result, the charging cycle time for small-diameter materials to the cooling bed is shorter than that for large-diameter materials, that is, the charging cycle is faster.
When charging one material to be cooled for each conveyance pitch, the conveyance speed must be increased, resulting in a shorter cooling time on the cooling bed, and small-diameter materials cannot be cooled to a specified temperature. There are disadvantages such as the possibility of reaching the downstream equipment without being properly inspected, and the difficulty of handling within the downstream equipment. Therefore, it is possible to charge two or more small-diameter materials per conveying pitch, but in this case, the conveyance will not be smooth, and the high-temperature materials to be cooled will rub against each other during conveyance on the cooling bed, causing surface scratches. Not only does this result in a loss of quality, but the material to be cooled does not rotate smoothly during transportation and is not cooled uniformly all around the circumference, resulting in the occurrence of bends in the material to be cooled. Furthermore, when installing a plurality of cooling beds with different conveyance pitches depending on the size of the material to be cooled, there is an unavoidable problem that a correspondingly large installation space and extremely high equipment costs are required.

The present invention was devised to solve the above-mentioned conventional problems, and by using a single cooling bed, even if the charging cycle of the material to be cooled changes due to a change in size, the conveyance speed does not change. One material to be cooled can be transported for each transport pitch, and even in the case of small-diameter materials in particular, the same cooling time on the cooling bed can be obtained as for large-diameter materials.

The present invention will be explained below with reference to illustrative embodiments.

This chain conveyor type cooling bed has a plurality of sets of two chain conveyors ASA' arranged side by side, each having the same conveyance pitch for the cooled material.

The chain conveyor A is a rail-shaped material receiver with a slight upward slope on the front side in the conveying direction], and a roller chain 2 is stretched between sprockets 3 and 4, and the forward side portion of the roller chain 2 is guided. The roller chain 2 is supported from below by a rail 5, and is provided with rl-ru 6 at a predetermined pitch, which protrudes from the -F of the roller/3) material holder on the forward side of the chain 2. The drive side sprocket 3 is fixed to a rotatable drive shaft 8 by a drive device 7, and the driven sprocket 4 is attached to a driven shaft. 9 so that it can rotate freely. A pawl 10 is provided at the boss end of the driving sprocket 3 located on the chain conveyor AI side.

The chain conveyor AI is a rail-shaped material holder that slopes upward in the forward direction in the conveying direction with the same slope as the material holder 1 of the chain conveyor A, and the roller chain 2I is stretched between the sprockets 31 and 41, The forward side portion of the chain 2T is supported from below by the guide rail 5I, and the material holder is placed on the forward side of the roller chain 2+]I
The roller chain 2 at the same pitch as the roller 6 of the chain conveyor A so as to protrude above the roller chain 2! A roller 6+ is installed in the
The material to be cooled M can be conveyed while constantly being pushed around by the roller 6I, and the driven sprocket 41 is rotatably mounted on the driven shaft 9/f 1 , but the driving sprocket 3- is not driven. Stopper 11 provided on shaft 8 and drive side sprocket 3
It is rotatably supported via the slide bearing 12 of the slide bearings 12 and 13 mounted between the two. A retaining hole 14 that opens toward the sprocket 3 is provided at the boss end of the drive sprocket 31 facing the drive sprocket 3 .

A ring-shaped interlocking member 15 is rotatable in the slide bearing 13 in the axial direction of the drive shaft 8 (hereinafter simply referred to as axial direction).
A pawl 16 and an engaging protrusion 17 are provided at each end of the interlocking member 150, and a retaining groove 18 along the circumferential direction is provided on the outer peripheral surface. This interlocking member 15 includes an engaging protrusion 17 and a drive side sprocket) 31
It is movable in the axial direction through the engagement hole 14 provided in the sprocket 3, and is constantly engaged in a rotatable manner together with the subroket (L). It can be engaged with and disengaged from the sprocket 3 via a certain pawl 10. The locking groove ('I-) 18 provided in the interlocking member 15 is provided with an actuating lever 2 which can swing in the axial direction via a link mechanism applied by a pneumatically or hydraulically operated cylinder 9.
1 is engaged through rollers 22.

Thus, between the drive side sprockets) 3 and 3' of the chain conveyors A and A', there is an interlocking member 1 which is movable in the axial direction and is always rotatably engaged with the sprockets) 3+.
5, and by moving the interlocking member 15 in the axial direction, the sub-button) 3.31 is moved by the claw 10. A latching mechanism is provided which can be engaged and disengaged via 16, and the subblocks 3 and 31 are engaged with each other via the mechanism n.

Next, the function of this cooling bed will be explained.

Figures 5 and 6 show roller chain 2.2, respectively.
FIG. 6 is a side view of the cooling bed shown before and after changing the conveyance pitch when the + is provided with one roller 6.6I for every two links.

When the drive shaft 8 is rotated by the drive device 1, the rotational force is transmitted to the sprocket 3+ on the drive shaft B and the sprocket 3+ engaged with the sprocket 5 via the clutch mechanism O, and the chain conveyor A is rotated.

A' act together to move the forward rollers 6.61 of the chain conveyors A and A' in the direction of the arrow shown in FIG.

Therefore, the material M to be cooled is transferred to the chain conveyor A.

When the material to be cooled M is charged at the input side of A' at a rate of one piece for every transport pitch l and placed on the material pedestal 1.1', the material M is cooled due to the inclination of the material pedestal 1.1'. Chain conveyor A, A
The material receiver 1.' is constantly in rolling contact with the roller 6.61 and is constantly pushed around as the roller 6.6 moves. ]'
J: will be transported, and during the transport process, it will be naturally cooled by the atmosphere or forcedly cooled by air blown by a ventilation fan.

The cooling bed in the state shown in Figure 5 has a large conveyance pitch, so it is suitable for cooling large-diameter materials, but for small-diameter materials, there is too much space between them, which is wasteful, and the cooling bed has a high conveyance rate that corresponds to the charging speed. It is not suitable for cooling small-diameter materials because the speed becomes too high and cooling becomes insufficient.

Therefore, for small-diameter materials, the interlocking member 15 is moved in the axial direction by rotating the actuating lever 21 through the link mechanism part 1 through the cylinder 19, and the pawl 16 provided on the interlocking member 15 is moved. The pawl 10 is provided on the sprocket 3.
In other words, perform an operation to disconnect the clutch mechanism.

In this state, the sprocket 3 is rotated forward by a desired angle via the drive shaft 8 by the drive unit 2, and then the claw 16 of the interlocking member 15 is rotated to rotate the sprocket 3 by the reverse operation of the cylinder 9 by rotating the fine operation lever 21. In other words, the clutch mechanism is connected. In this series of operations, sprocket) 3+ is sprocket 3
Even if the engagement with the sprocket 3 is released, it will not rotate when the drive shaft 8 rotates due to rotational resistance between the roller chain 21 and the guide rail 51. A phase shift of the desired angle occurs between them, resulting in ? The roller chains 2, 21 each having one O-roller 6, 6I for each link, the rollers 6, 6I, which were aligned with each other, are shifted by one link, and the conveyance pitch is halved, making it suitable for cooling small-diameter materials. A cooling bed in the state shown in FIG. 6 is obtained.

To obtain the cooling bed in the state shown in FIG. 5, where the conveyance pitch is the original length, follow the same procedure as above, that is, after performing the disengagement operation of the clutch mechanism, move the tin rocket 3 at the desired angle. The engine rotates forward, and then the clutch mechanism is connected.

In order to rotate the sprocket 3 in the normal direction by a desired angle, the drive device 7 is equipped with a rotary limit switch, and this switch causes the drive shaft 8 to stop when rotated by the desired angle. The configuration may be such that the output from the limit switch is cut off and the drive device is continuously operated.

As described above, the present invention has a plurality of sets of two chain conveyors arranged in parallel, each having the same conveyance pitch for the cooled material, and one sprocket of the drive side sprockets of the chain conveyor is connected to the drive shaft. The sprocket is supported so as to be rotatable only, the other sprocket is fixed to the drive shaft, and the sprocket is always engaged between the rotary sprocket and the fixed sprocket so as to be movable in the axial direction and rotatable with the rotary sprocket. Since it is equipped with an interlocking member and a clutch mechanism that allows both sprockets to be engaged and disengaged by moving the interlocking member in the axial direction, transportation can be carried out by simply operating the clutch by moving the interlocking member in the i-axis direction and rotating the other sprocket. The pitch can be changed, and therefore, even if the charging cycle of the material to be cooled changes due to a change in size, there is no need to change the conveyance speed in response to the change, so the function of the cooling bed can be sufficiently ensured.

Therefore, since the same cooling bed can be shared without providing cooling beds with different conveyance pitches for the size of the material to be cooled, equipment costs and installation space can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a schematic configuration of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1, and FIG. FIG. 4 is a front view and a cross-sectional view showing an enlarged drive side sprocket of the chain conveyor, and FIG. FIG. 6 is a side view of the cooling bed shown in a state before changing the conveying pitch and in a state after changing the conveying pitch, respectively. A, A'...Chain conveyor, 1. , 11...Material pedestal, ? , 21...roller chain, 3.3'...
Drive side sprocket, 4. 4. '...Driver side sprocket, δ 51...Guide rail, 6.6'...
Roller, 7... Drive device, 8... Drive shaft, 9...
Driven shaft, 10. 16...Claw, 11...Stopper,
12. 13... Sliding bearing, 14... Engagement hole portion,
15... Interlocking member, 17... Engaging protrusion, 18...
Engagement groove, 19...Cylinder, 20.1! Link] t4
7t, n...operating lever, 22...roller, 23...
・Clutch mechanism.

Claims (1)

[Claims] A plurality of sets of two-row chain conveyors having the same conveyance pitch of the cooled material are arranged in parallel, one of the drive-side sprockets of the chain conveyor is rotatably supported by the drive shaft, The other sprocket is fixed to the drive shaft, and between the rotary sprocket and the fixed sprocket is an interlocking member that is movable in the axial direction and is always engaged in a rotatable manner with the rotary sprocket, and the interlocking member. A chain conveyor type cooling bed characterized by being provided with a clutch mechanism that enables nine sprockets to be engaged and disengaged by axial movement of the chain conveyor type cooling bed.