JPS5829049Y2 - Chain conveyor sprocket wheel holding device - Google Patents

Description

[Detailed description of the invention] This invention is a chain conveyor in which a plurality of chains for transmission are attached to a drive shaft that drives multiple rows of endless chains, and a driven shaft that is rotated by the drive shaft via the chain. This invention relates to a sprocket wheel holding device for a chain conveyor, in which the distance between the sprocket wheels attached to each shaft can be changed to a desired length.

A chain conveyor transports objects by having chain rollers roll on rails that support the chain rollers.

The chain that transports the transported object will
It becomes necessary to change the width of the chain depending on the size of the object to be transported.

In such cases, conventionally, in order to change the width of the sprocket wheel that drives the chain and the driven sprocket wheel that is driven through the chain by this driving sprocket wheel, it is necessary to The drive shaft and driven wheels had to be replaced.

In view of the above, this invention is a conveyor sprocket wheel 4-holding device that eliminates the need to replace the drive shaft and driven shaft to which the sprocket wheels are attached when it becomes necessary to change the spacing between the sprocket wheels on the driving side and driven side of a chain conveyor. The purpose is to provide the following.

Next, this invention will be explained based on embodiments shown in the drawings.

In Figures 1 to 6, the chain conveyor 1 is provided with a suitable number of left and right columns 2, 2', and on the top of these columns 2, 2 there is a side frame 3°3 or symmetrical left and right. Appropriate number of them are taken over.

A drive shaft 4 is mounted on the side frames 3, 3' at one end of the chain conveyor 1 (left side in FIG. 2), and is rotatable by bearings 5, 5' fixed to the side frames 3, 3'. Supported.

A sprocket wheel 6 is attached to one end of the drive shaft 4, and a chain 10 is wound between this wheel 6 and a sprocket wheel 9 of a reducer 8 rotated by a motor 7. When the motor 7 rotates, the drive shaft 4 rotates at a low speed.

The sprocket wheel 11.11 has its boss portion 11a.

Two axially long keys 12 and 12' are attached to the drive shaft 4 at 11a (in this example, there are two keys, but one key may be used instead).

) is engaged with the key 12. This groove engages with the key 12. The key 12 is fitted symmetrically onto the drive shaft 4, and rotation with respect to the drive shaft 4 is restricted.

That is, the sprocket wheel 11 can move left and right along the key 12 in the axial direction of the drive shaft 4, but cannot rotate with respect to the drive shaft 4.

The same applies to the sprocket wheel 11.

The sprocket wheel 11 is provided with a ring groove 11b at the end of the boss portion 11a on the sprocket wheel 11 side.

Similarly, the host portion 11a of the sprocket wheel 11 is also provided with a ring groove 11b on the sprocket wheel 11 side.

The width determining block 13 is a member having arcuate inner and outer sides and a predetermined length, and has grooves 11a of the sprocket wheels 11 and 11 at both ends.

Flange portions 13a, 13a that engage with 11a are formed.

This width determining block 13 has a hole 13b in the center, and the radius of the inner surface thereof is slightly larger than the radius of the drive shaft 40.

The width determining block 13 has a flange 13a at one end in the ring groove 11b of the sprocket wheel 11, and a flange 1 at the other end.
3'a are respectively engaged with the ring grooves 11b of the sprocket wheel 11, and are attached to the center of the drive shaft 4 with bolts 14 at the holes 13b.

When the width determining block 13 is attached to the drive shaft 4 as described above, the sprocket wheels 11 and 11 cannot move in the axial direction of the drive shaft 4.

Therefore, by appropriately setting the length of the width determining block 13, the distance between the sprocket wheels 11 can be set to a desired length t.

In the chain conveyor 1, a driven shaft 15 is rotatably attached to side frames 3, 3' on the side opposite to the drive shaft 4 (right end in FIG. 2) by bearings 20, 20.

A long key 17° 17' is attached to the driven shaft 15 in the axial direction, and the driven shaft 15 is connected to a sprocket wheel 16, 16' having the same shape as the sprocket wheel 11.11' inserted into the driven shaft 15. Rotation about the shaft 15 is restricted.

The two sprocket wheels 16 and 16' have sprocket wheels 11 attached to their respective bosses 16a and 16'a.
Ring groove 16 same as ring groove 11b, 11b of °11
b, 16'b are provided.

Therefore, the flanges 18a, 18'a of the width determining block 18 having the same shape as the width determining block 13 are engaged with the ring grooves 16b, 16'b of the sprocket wheel 16.16',
This width determining block 18 is attached to the driven shaft 15 by a bolt 19.
When attached to the center of the sprocket wheel 16,
16' cannot move in the axial direction of the driven shaft 15, and the distance between the sprocket wheel 16 and the sprocket wheel 16' is set to be the same as the distance t between the sprocket wheels 11.

21° 21' is a chain, and the chain 21 is between the sprocket wheel 11 of the driving shaft 4 and the sprocket wheel 16 of the driven shaft 15, and the chain 21' is between the sprocket wheel 11 of the driving shaft 4 and the sprocket of the driven shaft 15. It is wound between the wheel 16.

W is an object to be transported by this chain conveyor 1.

As mentioned above, the spacing is determined by the sprocket wheels 11, 11&#Wi determining block 13 attached to the drive shaft 4, so it is necessary to change the spacing between the conveyor chains 21, 210 as the size of the conveyed object W changes. In this case, the interval between the conveyor chains 21, 21 can be changed simply by changing the width determining block 13.

The same applies to the driven shaft 15.

Next, a second embodiment shown in FIGS. 7 to 9 will be described.

This embodiment uses two wheels around the drive shaft 40 as a means of setting the spacing of the sprocket wheels 11,11' to a desired length.
Divided width determining collar 22. A desired width determining collar 23 is wound between the boss portions 11a = 11a of the two sprocket wheels 11.11' by a belt 28, and the two sprocket wheels 11.11' are wrapped around each other. A similar collar 2 is installed between ' and bearings 5 and 5'.
4.22 is wrapped around and held by the belt 28, and the spacing between both sprocket wheels 11.11 is set to the desired length by replacing the width determining collars 23° and 22.24 with ones of the desired length. It is something.

Further, both sprocket wheels 16.degree. 16' on the driven shaft 15 are similarly set using width determining collars 26.25.27.

Note that the other configurations are the same as those in the first embodiment, so explanations will be omitted.

As described above, this invention has a sprocket that has a drive shaft that drives a chain, a driven shaft that transmits the rotation of the drive shaft via the chain, and a plurality of boss parts attached to each of the shafts. In a chain conveyor in which an endless chain is wound around a wheel, a long key is attached in the axial direction of the driving shaft and the driven shaft, and a groove provided in the boss portion of the sprocket wheel is loosely fitted into the long key, and the sprocket The wheel is movable in the axial direction of the drive shaft and driven shaft, and by holding both sprocket wheels with width determining members attached to the drive shaft and driven shaft, the width between both sprockets can be adjusted arbitrarily. Therefore, if it becomes necessary to change the chain spacing on the drive shaft and driven shaft, you can simply replace it with another width determining member that allows you to set the chain spacing to the desired length. Since the spacing can be changed very easily and there is no need to replace the drive and driven shafts, the time and cost for shaft conversion can be significantly reduced.

[Brief explanation of the drawing]

Figures 1 to 6 show the first embodiment of this invention. Figure 1 is a front view of the chain conveyor, Figure 2 is an overall side view of the chain conveyor, and Figure 3 is the drive side ( (left side) enlarged view, FIG. 4 is a front view showing a partial cross section of the drive shaft portion, FIG. 5 is a front view showing a partial cross section of the driven shaft portion (view taken along the line V-V in FIG. 2), Figure 6 is a perspective view of the width determining block, Figure 7~
FIG. 9 shows the second embodiment, FIGS. 7 and 8 correspond to FIGS. 4 and 5 of the first embodiment, and FIG. 9 shows a cross section of the width determining collar. It is a sectional view taken along the line IX-IX. 1...Chain conveyor, 4...Drive shaft, 11°11...Sprocket wheel, 1
1a, 11'a...Boss, Ilb, ll'b・
...Groove, 12, 12'...Key, 13.
...Width determining member, 13a, 13'b...
Flange, 14... Bolt, 15... Driven shaft, 16°16'... Sprocket wheel,
16a, 16'a...Boss, 16b, 16
'b...Groove, 17.17'...Key
18...Width determining member, 18a, 18'a...
...Brim part, 19...Bolt, 22, 23, 2
4,25゜26.27・・・Width determining collar, 28
······belt.

Claims (1)

[Scope of utility model registration request] The endless chain is wound around a sprocket wheel that has a drive shaft that drives the chain and a driven shaft that transmits the rotation of the drive shaft through the chain, and that has a plurality of bosses attached to each shaft. In the chain conveyor, a long key is attached in the axial direction of the driving shaft and the driven shaft, and a groove provided in the boss part of the sprocket wheel is loosely fitted into the long key, and the sprocket wheel is connected to the shaft of the driving shaft and the driven shaft. A chain conveyor characterized in that the width between both sprockets can be arbitrarily adjusted by holding both sprocket wheels with a width determining member attached to the driving shaft and the driven shaft. Sprocket wheel retention device.