JPH0664722A - Lift conveyor - Google Patents

Abstract

PURPOSE:To make an endless chain of a lift conveyor for large-depth excavation larger so as to withstand the self-weight of the chain and make sprockets or the like longer. CONSTITUTION:The load of an elevating side carrying passage of a main chain is supported by continuously arranging an auxiliary chain 12 along the main chain 5 which is wound around sprockets 2a, 2b, fixes buckets 9 to the link consisting of the chain and carries the excavated earth or the like, and engaging auxiliary claws 15 which are continuously provided on the auxiliary chain 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift conveyor suitable for carrying out deep excavated soil.

[0002]

2. Description of the Related Art Conventionally, a conveyor is used for excavating the ground and discharging the residual soil to the ground. A bucket conveyor or the like is used for this conveyor, and when a chain is used for the conveyor, endless. Chains are used.

[0003]

However, for example, in subway construction and tunnel construction in mountains, the excavation depth is 50
More than m. When using an endless chain for a lift conveyor that conveys excavated soil during excavation, the deeper the excavation depth, the longer the conveyor length.Therefore, the load due to the weight of the chain increases and it is necessary to increase the size of the chain. is there. Further, since the load on the chain becomes large, it is necessary to increase the size of the frame and the sprocket, and further to increase the size of the drive motor. Therefore, the cost is increased as a whole. In particular, since the article to be conveyed is placed on the ascending side conveyance path of the conveyor, a large load is applied to the chain. Therefore, an object of the present invention is to provide a lift conveyor that can cope with the transportation of excavated soil or the like at a large depth, and can reduce the load on the chain in the transportation on the ascending side.

[0004]

A lift conveyor according to the present invention which solves the above-mentioned problems has rotation driving bodies 2a and 2b axially supported at the upper and lower ends of a frame 1, and has an ascending side conveying path and a descending side conveying path. The main chain 5 forming a path is wound around the rotary drive bodies 2a and 2b, a plurality of buckets 9 are fixedly mounted on the main chain 5, and the rotary drive bodies 2a and 2b are rotated to continuously connect the buckets 9. In the lift conveyor for vertically moving the auxiliary chain 12, the auxiliary chain 12 that moves in synchronization with the main chain 5 is
It is characterized in that the auxiliary claws 15 continuously provided in 2 are arranged side by side along the ascending side conveying path of the main chain 5 so as to engage with the main chain 5.

[0005]

In the present invention, the auxiliary chain 12 is provided in parallel along the ascending-side conveying path of the main chain 5 which is rotated by the rotary driving bodies 2a and 2b pivotally supported on the upper and lower ends of the frame 1. Since the auxiliary claws 15 continuously provided on the auxiliary chain 12 are configured to engage with the main chain 5, the auxiliary claws 15 support the ascending-side conveying path of the main chain 5.

[0006]

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an upper end sprocket 2a as a rotary drive is pivotally supported by a shaft 4a, and a lower end sprocket 2b as a rotary drive is also pivotally supported by a shaft 4b so that both main sprockets 2a, 2b are supported. Chain 5
Is being rolled. The shaft 4a and the shaft 4b are rotatably provided on the frame 1. Similarly, an upper end sprocket 10a as a rotary drive is pivotally supported on the shaft 4c, and a lower end sprocket 10b as a rotary drive is also pivotally supported on the shaft 4d.
The auxiliary chain 12 is wound around 0a and 10b. The shaft 4c and the shaft 4d are rotatably provided on the frame 1. That is, the chains 5 and 12 circulate as the upper sprocket and the lower sprocket rotate.

The main chain 5 orbits clockwise as viewed in the figure, and the auxiliary chain 12 orbits counterclockwise. Therefore,
The left side of the main chain 5 is the ascending side transport path. The rotational driving force of the upper sprocket 2a is transmitted by the motor 18 through the chain 20, and the upper sprocket 1
The rotational driving force of 0a is transmitted by the motor 19 via the chain 21.

As shown in FIGS. 1 and 2, the main chain 5 is composed of links 7 alternately superposed and rotatably connected to each other via a pin 6, and a bucket 9 is appropriately attached to the pin 6. The buckets 9 are fixed at intervals and are loaded with soil, sand or the like for transportation. One bucket is fixed to the link with three pins as shown in FIG. As shown in FIG. 3, the outer end of the pin 6 of the main chain 5 is guided by the guide rail 22 and is formed so as to surely orbit the specific track.

Similar to the main chain 5, the auxiliary chain 12 has links 13 rotatably connected via pins, and each link is provided with an auxiliary claw 15 in the outward direction. As shown in FIGS. 1 and 2, the main chain 5 and the auxiliary chain 12 are arranged in close proximity to each other so that the auxiliary claw 15 engages with the main chain 5, and the auxiliary chain 12 circulates. Auxiliary nail 15 by
The upward force plays a role of assisting the conveyance of the main chain 5 in the ascending side conveyance path. Especially, the depth is 50m
In the case of the above-mentioned large-depth excavation, it is inevitable that the chain will become long. Further, since soil or the like is mounted on the bucket 9 in the ascending-side transport path, an excessive load is applied to the chain and the chain is enlarged. However, since the load on the chain 5 can be reduced by the auxiliary claws 15 of the auxiliary chain 12, the size of the chain becomes larger and the chain is accompanied with it.

The usage state of the lift conveyor of the present invention will be described. The motor 18 and the motor 19 are operated at a predetermined speed. The predetermined speed in this case is a speed at which the main chain 5 and the auxiliary claws 15 of the auxiliary chain 12 can rotate while engaging with each other. In FIG. 1, the motor 18
Rotates clockwise, and the motor 19 rotates counterclockwise. The bucket 9 in which the excavated soil and the like are loaded below ascends while being assisted by the auxiliary claws 15 of the auxiliary chain 12 on the ascending side transport path, turns at the upper end of the chain 5, discharges the excavated soil in the bucket 9, and is illustrated. Do not throw into the shoot. After the unloading, the bucket 9 descends on the descending transport path on the right side.

This lift conveyor is generally provided in the ground, and the excavated soil or the like is loaded into a bucket that reaches the lowermost end and conveyed to the ground to enable continuous excavation and unloading work as a whole. It is a thing.

[0012]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the bucket on the ascending side conveying path of the main chain can be smoothly raised, and the bucket having excavated soil or the like mounted on the ascending side conveying path. Since the excessive load on the main chain due to is supported by the auxiliary claws on the auxiliary chain,
It is possible to prevent the chain and the motor from increasing in size and reduce the cost. Further, it is convenient for assembling and carrying the lift conveyor itself. In particular, when excavating at a large depth, the heavy weight of the chain itself and the load of multiple buckets attached to the chain will cause a large load on the chain, so the auxiliary claws of the auxiliary chain can support the load and ensure smooth transportation. Therefore, it is possible to provide a lift conveyor suitable for deep digging.

[Brief description of drawings]

FIG. 1 is a front view of a main portion of a lift conveyor.

FIG. 2 is an enlarged perspective view of a main part of a lift conveyor.

3 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 frame 2a upper sprocket 2b lower sprocket 5 main chain 9 bucket 10a upper sprocket 10b lower sprocket 12 auxiliary chain 15 auxiliary claw

Claims (1)

[Claims] 1. A main chain (5) for rotatably supporting a rotation driving body (2a, 2b) on upper and lower ends of a frame (1) and forming an ascending side conveying path and a descending side conveying path. , 2b), and a plurality of buckets (9) are fixedly mounted on the main chain (5) to rotate the rotary drive body (2).
In a lift conveyor for continuously moving up and down a bucket (9) by rotating a, 2b), an auxiliary chain (12) that moves in synchronization with the main chain (5) is transferred to the auxiliary chain (12). A lift conveyor characterized in that the auxiliary claws (15) continuously provided are arranged in parallel along the ascending side conveying path of the main chain (5) so that the auxiliary claws (15) are engaged with the main chain (5).