CN211110903U

CN211110903U - Pallet fork mechanism

Info

Publication number: CN211110903U
Application number: CN201921975475.7U
Authority: CN
Inventors: 徐正林; 赵德平; 井刚; 冯金云
Original assignee: Jiangsu Nova Intelligent Logistics Equipment Co ltd
Current assignee: Jiangsu Nova Intelligent Logistics Equipment Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-07-28
Anticipated expiration: 2029-11-15

Abstract

The utility model relates to a pallet fork mechanism, which comprises a fork extending component, a fork extending driving motor and a transmission component, wherein the fork extending driving motor is arranged on a base, the fork extending component comprises two groups which are arranged on two sides of the base, the fork extending component comprises an outer fork plate, a middle fork plate and an inner fork plate, the outer fork plate is fixedly arranged on the base, and the outer fork plate, the middle fork plate and the inner fork plate are movably embedded together by two telescopic fork guide rails; the fork extending driving motor drives the middle fork plate to extend and retract through the transmission part; one end of a telescopic fork connecting belt is fixed on the inner side of the outer fork plate, the other end of the telescopic fork connecting belt is fixed on the outer side of the inner fork plate, and the middle of the telescopic fork connecting belt passes through a belt transition wheel on the outer side of the middle fork plate, so that the inner fork plate synchronously extends and retracts at a linear speed 2 times that of the middle fork plate. This fork structure adopts the mode of three-layer board fork, stretches the fork and gets the goods apart from the twice increase, and equipment is small, and is efficient, and the precision is high, and response speed is fast, uses on being particularly suitable for the shuttle.

Description

Pallet fork mechanism

Technical Field

The utility model relates to a fork mechanism, especially a fork mechanism that uses on the shuttle further still can adjust fork interval width shuttle fork mechanism.

Background

The fork is generally installed on the conveying equipment in automatic three-dimensional storehouse, and the access of goods is carried out in the cooperation outfit. The fork is a robot of the equipment, is a multipurpose high-compliance material handling part, and is widely applied to the industries of storage, paper making, packaging, printing, tobacco, household appliances, wine and beverages, wool cotton textile, port and ship ports, railway, automobile manufacturing, steel smelting, chemical engineering, construction and the like. The action fork of usual fork access goods stretches the fork (be less than bottom surface under the goods), the fork lifts (too high with the goods, breaks away from the goods holding surface), the fork returns the fork (takes conveying equipment with the goods), the fork falls (places the goods on conveying equipment holding surface), the action is loaded down with trivial details, the time of getting the goods is long, the goods parking space of requirement is big.

The shuttle car is a small, flexible and quick automatic material conveying trolley which is mainly used for conveying material boxes, the material boxes have various specifications, and the distance between fork forks of the shuttle car can be adjusted if the shuttle car can be compatible with the sizes of the material boxes. Meanwhile, the requirements of simple and light structure and high fork stretching speed are also met.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes above-mentioned technical problem is applied to the access of the light-duty goods in magazine formula or the intensive storehouse of the same type production, and the action of leaning on pulling or pushing away is got or is put the goods, and relative traditional fork has advantages such as the functioning speed is fast, positioning accuracy is high, operate steadily, the noise is little, efficient, small, and the fork interval is adjustable simultaneously, and adaptability is good.

The technical scheme of the utility model is that: a fork mechanism is arranged on a base of a shuttle car and comprises a fork extending component, fork extending driving motors and transmission components, wherein the fork extending driving motors are arranged on the base, and the fork extending components are divided into two groups and arranged on two sides of the base.

The telescopic fork component comprises an outer fork plate, a middle fork plate and an inner fork plate, wherein the outer fork plate is fixedly arranged on the base, and the outer fork plate, the middle fork plate and the inner fork plate are movably embedded together by two telescopic fork guide rails; the fork extending driving motor drives the middle fork plate to extend and retract through the transmission part; one end of a telescopic fork connecting belt is fixed on the inner side of the outer fork plate, the other end of the telescopic fork connecting belt is fixed on the outer side of the inner fork plate, and the middle of the telescopic fork connecting belt passes through a belt transition wheel on the outer side of the middle fork plate, so that the inner fork plate synchronously extends and retracts at a linear speed 2 times that of the middle fork plate.

Furthermore, the two sets of fork parts are connected into a frame structure through a connecting rod and are arranged on the base, and the bin supporting part is arranged on the connecting rod in a penetrating mode and located between the two sets of fork parts.

Furthermore, the transmission part is a synchronous belt pulley, the stretching fork driving motor drives the spline lead screw to rotate through the first synchronous belt pulley, the second synchronous belt pulley on the spline lead screw drives the stretching fork driving belt, and the stretching fork driving belt and the fixed middle fork plate are meshed together through teeth.

Furthermore, the transmission part also comprises a pull rod steering engine part, when a shift lever of the pull rod steering engine part rotates by 90 degrees, the extending fork driving motor rotates reversely, and after the extending or retracting operation is completed, the pull rod steering engine part returns to a zero position.

Further, the middle of the belt transition wheel is bulged.

Furthermore, two groups of fork extending components are provided, one is a fixed fork component, the other is a movable fork component, the connecting rod is a movable fork guide rod, and the fixed end of the movable fork guide rod, the fixed end of the spline screw and the fixed end of the movable fork ball screw are arranged on a fixed outer fork plate of the fixed fork component; the nut sleeve of the spline screw and the nut sleeve of the shifting fork ball screw are arranged on a shifting outer fork plate of the shifting fork part, the shifting fork driving motor arranged on the base drives the shifting fork ball screw to rotate through the shifting fork synchronous belt pulley and the shifting fork synchronous belt, the shifting fork ball screw nut sleeve converts the rotating motion into linear motion, and the nut sleeve drives the shifting fork part to move on the shifting fork guide rod and the spline screw.

Furthermore, the motors are all servo motors.

Advantageous effects

1. All driving motors adopt a bus type full servo system, and high-precision and high-speed response is realized.

2. The fork adopts a three-layer plate fork mode, the driving length is equal, and the goods taking distance of the outer fork extending fork is increased by two times; the goods taking speed of the external fork extending fork is increased by two times at the same driving speed; the equipment has small volume and high efficiency; the goods shelf and the goods form an extremely high-density whole body through tight compression in three-dimensional space.

3. The linear guide rail is adopted between the three-layer plate fork, so that the movement is stable, the noise is low, and the precision is high.

4. High-precision spline screw and ball screw, high moving speed and high positioning precision.

5. The width between fixed fork part, the removal fork part changes fast, can adapt to the access of different width workbins fast.

6. The contact surface of the belt transition wheel is designed to be drum-shaped, so that the connection belt of the telescopic fork can be prevented from sagging in the motion of the telescopic fork.

7. And the synchronous belt is adopted for driving, so that the noise is low and the precision is high relative to the chain driving.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention

FIG. 2 is a schematic view of the structure of the stationary fork member

FIG. 3 is a schematic view of the moving fork assembly

FIG. 4 is a schematic view of a belt transition pulley

FIG. 5 is a schematic diagram of the fork pick motion

Fig. 6 is a schematic diagram of the motion of the shift fork.

Detailed Description

The structure and the operation principle of the present invention will be explained with reference to the accompanying drawings.

As shown in fig. 1, the fork mechanism mainly comprises a fixed fork part 1, a movable fork part 2, a fork extending driving motor 3, a fork moving driving motor 4, a bin supporting part 5, a fork moving guide rod 6, a spline screw 7 and a fork moving ball screw 8.

As shown in fig. 2, the fixed fork part 1 mainly comprises a fixed outer fork plate 1-1, a fixed middle fork plate 1-2, a fixed inner fork plate 1-3, a telescopic fork guide rail 1-4, a telescopic fork connecting belt 1-5, a telescopic fork driving belt 1-6, a pull rod steering engine part 1-7 and a belt transition wheel 1-8 (shown in fig. 4); the fixed outer fork plate 1-1, the fixed middle fork plate 1-2 and the fixed inner fork plate 1-3 are movably embedded together by two telescopic fork guide rails 1-4. As shown in fig. 5, the telescopic fork drive belt 1-6 is engaged with the fixed center fork plate 1-2 by teeth. The belt transition wheel 1-8 is arranged on the fixed middle fork plate 1-2; one end of a telescopic fork connecting belt 1-5 is connected with a fixed outer fork plate 1-1 through a belt transition wheel 1-8 arranged on a fixed middle fork plate 1-2, and the other end is connected with a fixed inner fork plate 1-3; when the telescopic fork driving belts 1-6 are driven by a telescopic fork motor through a transmission mechanism to move, the fixed middle fork plates 1-2 synchronously move through tooth driving, and the telescopic fork driving belts 1-6 pull the fixed inner fork plates 1-3 to generate displacement, wherein the displacement speed of the fixed inner fork plates 1-3 is 2 times that of the fixed middle fork plates 1-2. The transmission principle is shown in figure 5.

As shown in figure 3, the movable fork component 2 is the same as the fixed fork component 1, and mainly comprises a movable outer fork plate 2-1, a movable middle fork plate 2-2, a movable inner fork plate 2-3, a telescopic fork guide rail 2-4, a telescopic fork connecting belt 2-5, a telescopic fork driving belt 2-6, a pull rod steering engine component 2-7 and a belt transition wheel 2-8 (shown in figure 4), and the action principle is the same as that of the fixed fork component 1. Unlike the stationary fork member 1, the outer fork plate 2-1 of the moving fork is movably mounted on a moving fork guide 6.

Action principle of the fork mechanism: the fixed end of the fork moving guide rod 6, the fixed end of the spline screw 7 and the fixed end of the fork moving ball screw 8 are arranged on the fixed outer fork plate 1-1 of the fixed fork component 1; a nut sleeve of the spline screw 7 and a nut sleeve of the shifting fork ball screw 8 are arranged on a shifting outer fork plate 2-1 of the shifting fork component 2; the fork extending driving motor 3 drives the spline screw 7 to rotate through a synchronous belt pulley and a synchronous belt, the synchronous belt pulley on the spline screw 7 drives the telescopic fork driving belt 1-6 or the telescopic fork driving belt 2-6 simultaneously, the fixed fork part 1 or the movable fork part 2 performs fork extending action to extend target goods, the shift lever of the pull rod steering engine part 1-7 or the pull rod steering engine part 2-7 rotates for 90 degrees, the fork extending driving motor 3 rotates reversely to retract the fork, a material box on a goods position is pulled back to the material box supporting part 5 of the fork, the pull rod steering engine part returns to a zero position, and the whole process is called goods taking action as shown in fig. 5. Otherwise, the same principle is applied.

As shown in fig. 6, the fork moving driving motor 4 drives the fork moving ball screw 8 through the synchronous pulley and the synchronous belt, the nut sleeve of the fork moving ball screw 8 converts the rotation motion into a linear motion, the nut sleeve drives the fork moving part 2 to move on the fork moving guide rod 6 to change the width between the fork fixing part 1 and the fork moving part 2, and the whole process is called a fork changing motion.

Claims

1. A fork mechanism is arranged on a shuttle vehicle base and comprises fork extending parts, fork extending driving motors and transmission parts, wherein the fork extending driving motors are arranged on the base, the fork extending parts are divided into two groups and are arranged on two sides of the base; the fork extending driving motor drives the middle fork plate to extend and retract through the transmission part; one end of a telescopic fork connecting belt is fixed on the inner side of the outer fork plate, the other end of the telescopic fork connecting belt is fixed on the outer side of the inner fork plate, and the middle of the telescopic fork connecting belt passes through a belt transition wheel on the outer side of the middle fork plate, so that the inner fork plate synchronously extends and retracts at a linear speed 2 times that of the middle fork plate.

2. The fork mechanism of claim 1 wherein the fork members are connected to form a frame structure by a connecting rod and are mounted on the base, and the bin support member is disposed through the connecting rod and between the fork members.

3. The fork mechanism of claim 2 wherein the drive member is a timing pulley, the fork drive motor drives the splined shaft to rotate via the first timing pulley, and the second timing pulley on the splined shaft drives the fork drive belt, the fork drive belt engaging the fixed middle fork plate via teeth.

4. The fork mechanism of claim 3, wherein the transmission component further comprises a pull rod steering engine component, wherein when a shift lever of the pull rod steering engine component rotates 90 degrees, the fork extending drive motor rotates in reverse, and after the extending or retracting operation is completed, the pull rod steering engine component returns to a zero position.

5. The fork mechanism of claim 4 wherein the belt transition pulley is bowed in the middle.

6. The fork mechanism of claim 2 or 5 wherein two sets of fork extending members, one being a fixed fork member and one being a movable fork member, the connecting rod being a fork moving guide, the fixed end of the spline screw, and the fixed end of the fork moving ball screw being mounted on a fixed outer fork plate of the fixed fork member; the nut sleeve of the spline screw and the nut sleeve of the shifting fork ball screw are arranged on a shifting outer fork plate of the shifting fork part, the shifting fork driving motor is arranged on the base to drive the shifting fork synchronous belt pulley, the shifting fork synchronous belt drives the shifting fork ball screw to rotate, the shifting fork ball screw nut sleeve converts the rotating motion into linear motion, and the nut sleeve drives the shifting fork part to move on the shifting fork guide rod and the spline screw.

7. The fork mechanism of claim 6 wherein the motors are all servo motors.