JP2546142Y2 - Conveyor chain tension adjusting device for weight sorter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension adjusting device for a transport chain in a device for sorting fresh fish or the like.

[0002]

2. Description of the Related Art Generally, in this type of weight sorting apparatus, as shown in FIG. 5, for example, a discharge station in which a tare weighing station 1, a weighing station 2, and a plurality of discharge chutes 3 are arranged for each weight rank on the outer periphery of the apparatus. 4, a pair of chain wheels 6 are provided at both ends of an oval track 5 provided in the apparatus, and an endless transport chain 8 having a plurality of sorting object loading buckets 7 attached thereto is connected to both chain wheels 6. In between, the orbit 5 is orbited.

Conventionally, in order to adjust the tension of the transport chain 8, as shown in FIGS. 3 and 4, either one of the two chain wheels 6 has a wheel shaft.
11 is rotatably supported by a pair of upper and lower bearings 12, and each bearing
A concave groove 14 is provided on both side edges of a support plate 13 fitted on the outer periphery of the groove 12. Further, a pair of upper and lower guides 16 having a concave cross-sectional shape are fixed to the base 15 of the apparatus so as to face each other, and the bent edge 17 of the guide 16 is inserted into the concave groove 14 of the support plate 13. Thus, the support plate 13 is slidably supported by the guide 16 in the major axis direction of the oblong track 5. Furthermore, two upper and lower screw rods 18 are interposed between the support plate 13 and the guide 16, one end of the screw rod 18 is connected to the support plate 13, and the other end of the screw rod 18 is connected to a double adjustment nut. It is fixed to the guide 16 by 19.

To adjust the tension of the transport chain 8 by the tension adjusting device having the above structure, one of the double adjusting nuts 19 is loosened and the other is tightened, and the wheel shaft 11 is supported via the support plate 13 and the bearing 12. And moving the chain wheel 6 in the major axis direction of the oval orbit 5.

[0005]

However, according to the above-mentioned conventional tension adjusting device, when adjusting the tension, the upper and lower double adjusting nuts 19 are evenly tightened or tightened in order to maintain the verticality of the wheel shaft 11 accurately. I have to loosen it,
Since this operation is not always easy, there is a problem that it takes time to adjust the tension.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a simple tension adjusting device.

[0007]

According to the present invention, a tension adjusting device for a transport chain in a weight sorting device according to the present invention comprises a pair of chain wheels arranged at both ends of an oblong orbit provided on a base of the weight sorting device. In a weight sorting device in which an endless transport chain to which a plurality of sorting object loading buckets are tiltably attached is wrapped between both chain wheels to orbit an elliptical orbit, any one of the wheel shafts of the two chain wheels is used. It is rotatably supported by a pair of upper and lower bearings, the base is provided with a pair of guide grooves extending in a direction between the two chain wheels, and openings are provided on both sides of the one wheel shaft as a center. The pair of guide grooves are disposed inwardly so as to be opposed to each other, and both sides are engaged with the pair of guide grooves and the two Slidable support plate, a bearing box for accommodating the pair of upper and lower bearings is attached to the lower surface of the support plate, and extends along the pair of guide grooves and is screwed to the base. A screw member having a distal end connected to the bearing box is provided, and the screw member is rotated to move the bearing box in the sliding direction of the support plate to position the bearing box.

[0008]

[Operation] To adjust the tension of the transport chain by the tension adjusting device having the above configuration, tighten or loosen the screw member,
This is performed by moving the wheel shaft and the chain wheel in the major axis direction of the elliptical orbit through the bearing housing and the bearings inside the bearing housing. As described above, according to the present invention, the two bearings can be simultaneously and evenly moved by operating a single screw member, so that tension adjustment is easy and the verticality of the wheel shaft is always accurately maintained. be able to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, the tension adjusting device according to the present embodiment includes two chain wheels 6 (see FIG. 5).
One of the wheel shafts 21 is
The bearing box 23 has a middle plate 24 and a bottom plate
Each of the bearings 22 is fixed to one of the bearings 25, and a support plate 28 is provided so as to protrude from the upper ends of the opposed side walls 26 and 27. Further, a horizontal beam 30 is provided on a base 29 of the weight sorting device, and a pair of guide plates is provided on upper surfaces of both ends of the horizontal beam 30 via spacers 31.
By fixing the 32, a concave groove 33 is formed between the guide 32 and the cross beam 30, and by inserting the support plate 28 of the bearing box 23 into the concave groove 33, the bearing box 23 is extended by the cross beam 30. Circular orbit 5
(See FIG. 5) It is slidably supported in the major axis direction. Further, a screw member 34 is provided between the bearing housing 23 and the cross beam 30. The screw member 34 includes a bolt 35 having a head fixed to the opposing side wall 26 of the bearing box 23, and two adjusting nuts screwed to the bolt 35 to fix the shaft of the bolt 35 to the bent portion 36 of the cross beam 30. It consists of 37.

To adjust the tension of the transport chain 8 (see FIG. 5) by the tension adjusting device having the above structure, one of the two adjusting nuts 37 is loosened and the other is tightened.
Wheel shaft 21 via bearing housing 23 and internal bearing 22
And moving the chain wheel 6 in the major axis direction of the oval orbit 5. As described above, according to the present invention, the two bearings 22 can be moved simultaneously and evenly by operating the single screw member 34, so that not only the tension adjustment is simple, but also the vertical The degree can always be kept accurate.

As described above, according to the present invention, one of the two wheel shafts of the chain wheel of the weight sorting device is rotatably supported by a pair of upper and lower bearings, and both bearings are housed in a single bearing box. By operating a single screw member on the bearing housing, the two bearings can be moved simultaneously and evenly, and the verticality of the wheel shaft can always be kept accurately. Further, in the support structure of the bearing box, the base is provided with a pair of guide grooves extending in the direction between the two chain wheels, and the openings are opposed to each other on both sides with the one wheel shaft as a center. The pair of guide grooves are disposed inward so as to be engaged with each other, and both sides are engaged with the pair of guide grooves, and a support plate slidable in a direction between the two chain wheels is provided. Since the bearing box for accommodating the pair of upper and lower bearings is attached to the lower surface, the structure is simple.

[Brief description of the drawings]

FIG. 1 is a front view of a tension adjusting device showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a front view showing an example of a conventional tension adjusting device.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a plan view of the weight sorting device.

[Explanation of symbols]

 5 Oval track 6 Chain wheel 7 Bucket 8 Transfer chain 21 Wheel shaft 22 Bearing 23 Bearing box 29 Base 34 Screw member

Claims (1)

(57) [Scope of request for utility model registration] A pair of chain wheels is disposed at both ends of an oblong track provided on a base of a weight sorting apparatus, and an endless transport chain in which a plurality of sorting object loading buckets are tiltably mounted. In a weight sorting device that wraps between two chain wheels and orbits an oval track, one of the wheel shafts (21) of the two chain wheels is rotated by a pair of upper and lower bearings (22) (22).
It is movably supported, and the base (29) is located between the two chain wheels.
A pair of guide grooves extending in the direction (33) (33) is provided, and then the one wheelset (21) in the center
With its openings facing each other on both sides
And the pair of guide grooves (33) is disposed, and both sides are engaged with the pair of guide grooves (33) (33).
Support plate slidable in the direction between the two chain wheels
And a pair of upper and lower bearings (2) on the lower surface of the support plate (28).
2) When a bearing box (23) accommodating (22) is attached and extends along the pair of guide grooves (33) (33),
Both are screwed to the base (29) side and the tip is the bearing
A screw member (35) connected to the box (23) is provided, and the screw member (35) is rotated to move the bearing box (23) to the aforementioned position.
A tension adjusting device for a transport chain in a weight sorting device for positioning by moving in a sliding direction of a support plate (28) .