CN201169520Y

CN201169520Y - Fork safety device of buck stacker

Info

Publication number: CN201169520Y
Application number: CNU2008200825521U
Authority: CN
Inventors: 陈勇
Original assignee: Taizhou Qinghua Machine & Electric Manufacturing Co Ltd
Current assignee: Autofast Technologies Co., Ltd.
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2008-12-24
Anticipated expiration: 2018-01-25

Abstract

The utility model discloses a stacker fork safety and protection device, which comprises a shaft sleeve used to bear the weight of a fork transmission shaft, wherein the outer wall of the shaft sleeve is sleeved with a sliding bearing; the outside of the sliding bearing is sleeved with a driving chain wheel; the shaft sleeve and both end faces of the driving chain wheel are provided with friction plates; the driving chain wheel and one end of the transmission shaft are respectively fixed with an induction plate; and each induction plate is respectively interacted with a sensor which is connected with a controller (PLC). The stacker fork safety protection device has the advantages that the device has high safety and reliability, and can prevent a stacker from being damaged; meanwhile, the device can prevent a stacker fork from damaging a shelf or packing out a cargo, and has high degree of automation, etc.

Description

A kind of piler pallet fork safety guard

Technical field

The utility model relates to a kind of fender guard, relates in particular to a kind of piler pallet fork safety guard.

Background technology

At present, in automated storage and retrieval system, piler is controlled the action of its access goods by far-end PC.In the course of the work, if piler is in getting goods or arrangement of goods process, relative position deviation appears, pallet fork pushes up shelf or goods etc., can not in time find, even discovery in time also has little time the upright anxious action that stops pallet fork, thereby the bending shelf taking place or cause goods Peril Incident such as fall from the high-altitude, also brings certain infringement to piler.

The utility model content

Technical problem to be solved in the utility model is the defective that overcomes prior art; provide a kind of and can relative position deviation occur; when pallet fork pushes up shelf or goods, in time stop fork operation, make piler pallet fork safety guard safe and reliable to operation.

The utility model provides a kind of piler pallet fork safety guard; comprise the bearing that is used to carry the pallet fork transmission shaft; be set with plain bearing at described bearing outer wall; be set with drive sprocket in the described plain bearing outside; both ends of the surface at described bearing and described drive sprocket are equipped with friction lining; end with described transmission shaft on described drive sprocket is fixedly connected with sensing chip respectively; described each sensing chip respectively with a sensor sensing, the Programmable Logic Controller (PLC) that described sensor and far-end preset comparison program links.

On described bearing, a side of described drive sprocket is equipped with butterfly spring.

Between described bearing and described butterfly spring, friction lining and back-up ring have been clamped.

Described transmission shaft and described sensing chip can be integral type or split type, and described sprocket wheel and described sensing chip also can be integral type or split type.

Owing to adopt technique scheme, the utlity model has following beneficial effect:

1, safe and reliable;

2, avoid piler to suffer damage;

3, avoid goods and shelf to suffer damage;

4, degree of automation height.

Description of drawings

Fig. 1 is the structural representation of the utility model piler pallet fork safety guard;

Fig. 2 is the electrical schematic diagram of the utility model piler pallet fork safety guard.

Wherein: the 1-first sensor; The 2-axle sleeve; 3-pallet fork transmission shaft; The 4-flat key; The 5-friction lining; The 6-plain bearing; The 7-drive sprocket; The 8-butterfly spring; The little circular nut of 9-; 10-first sensing chip; The 11-spring washer; The 12-socket head cap screw; 13-second sensor; The 14-packing ring; The 15-elastic cylindrical pin; The 16-back-up ring; 17-second sensing chip.

The specific embodiment

Fig. 1 is the structural representation of the utility model piler pallet fork safety guard.Pallet fork transmission shaft 3 is installed in the axle sleeve 2, and pallet fork transmission shaft 3 is connected by flat key 4 with axle sleeve 2.Be set with plain bearing 6 on the outer wall of axle sleeve 2, in plain bearing 6 outsides drive sprocket 7 be installed, drive sprocket 7 is under the driving of a brake motor, through sprocket wheel, chain driven rotary.Both ends of the surface at axle sleeve 2 and drive sprocket 7 are equipped with friction lining 5, on axle sleeve 2, a side of drive sprocket 7 is equipped with butterfly spring 8.Friction lining 5 and back-up ring 16 between axle sleeve 2 and butterfly spring 8, have been clamped.

End with transmission shaft 3 on drive sprocket 7 is fixedly connected with first sensing chip 10 and second sensing chip 17 respectively, first sensing chip 10 and first sensor 1 induction, second sensing chip 17 and the induction of second sensor 13, first sensor 1, second sensor 13 link with the Programmable Logic Controller (PLC) that far-end presets comparison program respectively.Transmission shaft 3 is connected by socket head cap screw with second sensing chip 17.

When piler was worked, pallet fork power reached the drive sprocket 7 of pallet fork by a brake motor through sprocket wheel, chain, under normal operation, drive sprocket through friction lining 5 transmission of power to pallet fork transmission shaft 3, make fork operation.

Be illustrated in figure 2 as the electrical schematic diagram of the utility model piler pallet fork safety guard; the first sensor 1 and second sensor 13 detect drive sprockets 7 and transmission shaft 3 rotating speeds by the sensing chip that is in contact with it 1,17 respectively, and the rotating speed that sensing calculates is converted into electric signal by sensor transfers on the Programmable Logic Controller (PLC) of far-end.Rotating speed by program comparison two places of presetting in the controller machine equates then to think working properly.

When deviation appears in the piler relative position, pallet fork goes out to pitch when pushing up shelf or goods, the friction force that the pallet fork resistance is set up greater than butterfly spring 8 is (by calculating, regulate friction force, making pallet fork go out fork power can the bending shelf, eject goods and do not accept to surpass the goods of payload ratings), friction lining 5 skids, and the pallet fork transmission shaft stops operating, and then first sensor 1 and second sensor, 13 place's signals occur asynchronous.

Same, when goods was overweight, friction lining 5 skidded, and the pallet fork transmission shaft stops operating, and then first sensor 1 and second sensor, 13 place's signals occur asynchronous.

The asynchronous signal at first sensor 1 and second sensor, 13 places reaches PLC, and PLC control monitoring system alarming stops the motor action simultaneously, guarantees the safety of goods and shelf.After the staff finds alerting signal, pallet fork is regained, trouble-shooting can make piler recover normal operation.Owing to just respond to the relative rotation speed of drive sprocket 7 and transmission shaft 3, so safety device need not to reset.

The utility model can in time be sensed and stop machine operation, sends alerting signal simultaneously.Thereby protection shelf, goods have also protected piler self can not damage.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification sheets has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.

Claims

1, a kind of piler pallet fork safety guard; comprise the axle sleeve that is used to carry the pallet fork transmission shaft; be set with plain bearing at described axle sleeve outer wall; be set with drive sprocket in the described plain bearing outside; both ends of the surface at described drive sprocket are equipped with friction lining; it is characterized in that: on described drive sprocket and an end of described transmission shaft be fixedly connected with sensing chip respectively, described each sensing chip respectively with a sensor sensing, described sensor and remote controller link.

2, piler pallet fork safety guard according to claim 1 is characterized in that: on described axle sleeve, a side of described drive sprocket is equipped with butterfly spring.

3, piler pallet fork safety guard according to claim 2 is characterized in that: clamped friction lining and back-up ring between described axle sleeve and described butterfly spring.

4, piler pallet fork safety guard according to claim 1, it is characterized in that: described transmission shaft and described sensing chip are integral type, described sprocket wheel and described sensing chip are integral type.

5, piler pallet fork safety guard according to claim 1, it is characterized in that: described transmission shaft and described sensing chip are split type, described sprocket wheel and described sensing chip are split type.