CN111573572A

CN111573572A - Portal forward-moving structure and forklift

Info

Publication number: CN111573572A
Application number: CN202010167488.2A
Authority: CN
Inventors: 潘小军
Original assignee: Suzhou Pioneer Material Handling Equipment and Technology Co Ltd
Current assignee: Suzhou Pioneer Material Handling Equipment and Technology Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-08-25

Abstract

The invention discloses a portal frame forward moving structure and a forklift, wherein the portal frame forward moving structure comprises a portal frame body, two ends of the portal frame body are both connected with side plates, rollers are arranged on the side plates, the portal frame body is also connected with a chain transmission mechanism for driving the portal frame body to move, the chain transmission mechanism comprises a main chain wheel, a chain and a driving motor for driving the main chain wheel to rotate, the chain is meshed with the main chain wheel, and two ends of the chain are both used for being connected with a forklift body. The invention also discloses a forklift comprising the portal advancing structure. The invention can lead the gantry to have larger advancing stroke in a limited space.

Description

Portal forward-moving structure and forklift

Technical Field

The invention relates to the technical field of forklifts, in particular to a portal frame forward moving structure and a forklift.

Background

Fork truck is the important equipment in modern commodity circulation, mainly used loading and unloading, stack and the transportation operation of goods, and it includes automobile body and portal, and the portal is fork truck load handling device's main load-carrying members. The forklift is various in types, wherein the multi-direction forklift is widely applied due to the fact that the multi-direction forklift has the advantages that a large number of goods can be stored in a limited space and goods stacking is not affected, the defect that the cost is high due to the fact that a proportion valve is adopted to control the forklift wheels to be synchronous is overcome, the steering oil cylinder is adopted to achieve steering to reduce the cost, but the steering oil cylinder occupies most of the space of forklift supporting legs, enough space cannot be reserved, parts (such as a hydraulic valve group) required by forward movement of the gantry are configured, and therefore the gantry cannot generate a large forward movement stroke in the limited space, and the using requirements cannot be met.

Disclosure of Invention

The invention aims to provide a portal frame forward moving structure and a forklift, which can enable a portal frame to have a large forward moving stroke in a limited space.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides a portal advancing structure, includes the portal body, the both ends of portal body all are connected with the sideboard, all establish on the sideboard and be provided with the gyro wheel, still be connected with on the portal body and be used for the drive chain drive that the portal body removed, chain drive includes main sprocket, chain and drive main sprocket pivoted actuating motor, chain and main sprocket mesh mutually, the both ends of chain all are used for being connected with fork truck's automobile body.

In one embodiment, the chain transmission mechanism is connected to the door frame body near one end side plate, and the chain transmission mechanism is also connected to the door frame body near the other end side plate.

In one embodiment, the chain transmission mechanism further comprises a first driven sprocket and a second driven sprocket, the first driven sprocket is located on one side of the main sprocket, the second driven sprocket is located on the other side of the main sprocket, the chain sequentially passes through the first driven sprocket, the main sprocket and the second driven sprocket, and the first driven sprocket and the second driven sprocket are both connected to the bottom of the corresponding side plate.

In one embodiment, the first driven sprocket and the second driven sprocket on both sides of the main sprocket are symmetrically arranged.

In one embodiment, the side plates at two ends of the portal body are symmetrically arranged.

In one embodiment, a balancing valve is connected to the drive motor.

In one embodiment, the door frame body comprises a mounting bottom plate, the two sides of the mounting bottom plate are both connected with the side plates, a mounting seat is arranged on the mounting bottom plate, and the mounting seat is connected with the driving motor.

In one embodiment, the mounting base plate is provided with an open slot.

A forklift comprises the portal advancing mechanism and a forklift body, wherein sliding grooves are formed in two sides of the forklift body, rollers on a side plate at one end of the portal body are arranged in the sliding grooves in one side of the forklift body, and rollers on a side plate at the other end of the portal body are arranged in the sliding grooves in the other side of the forklift body.

In one embodiment, a tensioning device is connected to the vehicle body, and the chain is connected to the tensioning device.

The invention has the following beneficial effects: according to the door frame forward moving structure and the forklift, the door frame is driven to move forward through the chain transmission mechanism, the chain transmission mechanism is intensively arranged on the door frame body, the structure is compact, the occupied space is small, the door frame can have a large forward moving or backward moving stroke, and goods can be completely placed in a vehicle body after the door frame is retracted; the overall cost and the failure rate are greatly reduced, and the system can be started and stopped at any position, so that the operation is convenient.

Drawings

FIG. 1 is a schematic three-dimensional view of one embodiment of the truck of the present invention;

FIG. 2 is a front view of the truck of FIG. 1;

FIG. 3 is a bottom view of the truck of FIG. 2;

FIG. 4 is a three-dimensional structural schematic view of the gantry advance configuration of FIG. 1;

FIG. 5 is a schematic view of another angular three-dimensional configuration of the gantry advance configuration shown in FIG. 1;

in the figure: 1. the forklift truck comprises a gantry body, 2, a mounting base plate, 21, a mounting seat, 22, an open slot, 3, a sideboard, 4, a roller, 5, a chain transmission mechanism, 51, a main chain wheel, 52, a first driven chain wheel, 53, a second driven chain wheel, 54, a chain, 55, a driving motor, 6, a fork assembly, 7, a truck body, 71, a sliding chute, 72 and a tensioning device.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

As shown in fig. 3-5, the embodiment discloses a gantry forward moving structure, which includes a gantry body 1, two ends of the gantry body 1 are both connected with side plates 3, the side plates 3 are both provided with rollers 4, the gantry body 1 is further connected with a chain transmission mechanism 5 for driving the gantry body 1 to move (forward or retreat), the chain transmission mechanism 5 includes a main chain wheel 51, a chain 54 and a driving motor 55, the driving motor 55 is used for driving the main chain wheel 51 to rotate, the chain 54 is meshed with the main chain wheel 51, and two ends of the chain 54 are both used for being connected with a body 7 of a forklift.

It is understood that when the chain 54 is connected to the car body 7, one end of the chain 54 is located at one end of the moving direction of the gantry body 1, and the other end of the chain 54 is located at the other end of the moving direction of the gantry body 1, that is, one end of the chain 54 is connected to the front end of the car body 7, and the other end is connected to the rear end of the car body 7, so as to ensure that the gantry body 1 can move forward or backward relative to the car body 1.

Wherein, be connected with fork subassembly 6 on the portal body 1 liftable for insert and get the goods.

In one embodiment, a chain transmission mechanism 5 is connected to the position, close to one end side plate, of the gantry body 1, a chain transmission mechanism 5 is also connected to the position, close to the other end side plate 3, of the gantry body 1, namely, the chain transmission mechanisms 5 are arranged at two ends of the gantry body 1, so that the stability of the moving process of the gantry body 1 is guaranteed.

In one embodiment, the chain transmission 5 further includes a first driven sprocket 52 and a second driven sprocket 53, the first driven sprocket 52 is located on one side of the main sprocket, the second driven sprocket 53 is located on the other side of the main sprocket 51, the chain 54 sequentially passes through the first driven sprocket 52, the main sprocket 51 and the second driven sprocket 53, the first driven sprocket 52 and the second driven sprocket 53 are both connected to the bottom of the corresponding side plate 3, that is, the first driven sprocket 52 and the second driven sprocket 53 in each chain transmission 5 are both connected to the bottom of the side plate 3 adjacent to the chain transmission 5. By the arrangement of the first driven sprocket 52 and the second driven sprocket 53, the direction of the chain 54 and the smoothness of the transmission can be corrected. When the chain transmission mechanism 5 performs transmission, the main chain wheel 51 drives the first driven chain wheel 52 and the second driven chain wheel 53 to rotate.

In one embodiment, the first driven sprocket 52 and the second driven sprocket 53 on the two sides of the main sprocket 51 are symmetrically arranged, so that the accurate movement of the gantry body 1 along the direction of the chute 71 on the vehicle body 7 is ensured, the deviation is avoided, and the moving stability is ensured.

In one embodiment, the side plates 3 at the two ends of the gantry body 1 are symmetrically arranged to ensure the motion stability of the gantry body 1.

In one embodiment, the drive motor 55 is a hydraulic motor.

In one embodiment, a balancing valve is connected to the drive motor 55 to control oil pressure.

In one embodiment, the gantry body 1 includes a mounting base plate 2, the two sides of the mounting base plate 2 are both connected with the side plates 3, a mounting seat 21 is arranged on the mounting base plate 2, and the mounting seat 21 is connected with the driving motor 55.

In one embodiment, as shown in fig. 4, the mounting base plate 2 is provided with an open slot 22 to avoid mounting interference, and also to reduce weight and save mounting space.

In one embodiment, the sideboards 3 are provided with a plurality of rollers 4 to increase the stability of the mast as it moves (forwards or backwards) relative to the body of the truck.

The embodiment also discloses a forklift, as shown in fig. 1-3, the forklift comprises any one of the gantry advancing mechanism and the forklift body 7, as shown in fig. 2, sliding grooves 71 are respectively arranged on two sides of the bottom of the forklift body 7, rollers 4 on the side plate 3 at one end of the gantry body 1 are arranged in the sliding grooves 71 on one side of the forklift body 7, and the rollers 4 on the side plate 3 at the other end of the gantry body 1 are arranged in the sliding grooves 71 on the other side of the forklift body 7.

When the door frame body 1 moves, the roller 4 rolls in the chute 71 to move forward or backward.

In one embodiment, as shown in fig. 3, a tensioning device 72 is connected to the vehicle body 7, and the chain 54 is connected to the tensioning device 72 so that the tension of the chain 54 can be adjusted by the tensioning device 72.

Further, a tensioner 72 is coupled to one end of the chain 54.

The working principle of the gantry advancing mechanism of the embodiment is as follows: when the portal needs to be moved forward, the chain transmission mechanism 5 is started to drive the portal body 1 to move forward, that is, the driving motor 55 is started to drive the main chain wheel 51 to rotate, the portal body 1 is driven to move forward relative to the vehicle body 7 through the meshing transmission of the main chain wheel 51 and the chain 54, and when the portal needs to be moved forward, the roller 4 of the portal body 1 rolls in the chute 71 of the vehicle body 1 to move forward; during the forward movement of the gantry body 1, the gantry body 1 can be stopped at any position by controlling the driving motor 55 to adapt to the cargo position. When the portal frame needs to be moved backwards, the chain transmission mechanism 5 can realize reverse transmission only by enabling the driving motor 55 to rotate reversely, so that the portal frame body 1 is driven to move backwards relative to the vehicle body 7. It will be appreciated that the main sprockets 51 of the chain drive 5 at each end of the gantry body 1 rotate in opposite directions as the gantry moves.

According to the door frame advancing structure and the forklift, the door frame is driven to advance through the chain transmission mechanism 5, the chain transmission mechanism 5 is intensively arranged on the door frame body, the structure is compact, the occupied space is small, the door frame can have a large advancing or retreating stroke, and goods can be completely placed in the forklift body after the door frame is retracted; the overall cost and the failure rate are greatly reduced, and the system can be started and stopped at any position, so that the operation is convenient.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. The utility model provides a portal advancing structure, a serial communication port, including the portal body, the both ends of portal body all are connected with the sideboard, all establish on the sideboard and be provided with the gyro wheel, still be connected with on the portal body and be used for the drive chain drive that the portal body removed, chain drive includes main sprocket, chain and drive main sprocket pivoted actuating motor, chain and main sprocket mesh mutually, the both ends of chain all are used for being connected with fork truck's automobile body.

2. The gantry advancing structure according to claim 1, wherein the chain transmission mechanism is connected to the gantry body near one end plate, and the chain transmission mechanism is connected to the gantry body near the other end plate.

3. The mast advancing structure according to claim 2, wherein the chain transmission mechanism further comprises a first driven sprocket and a second driven sprocket, the first driven sprocket being located on one side of the main sprocket, the second driven sprocket being located on the other side of the main sprocket, the chain passing around the first driven sprocket, the main sprocket and the second driven sprocket in sequence, the first driven sprocket and the second driven sprocket each being connected to the respective bottom side plates.

4. The mast advancing structure according to claim 3, wherein the first driven sprocket and the second driven sprocket on both sides of the main sprocket are symmetrically arranged.

5. The gantry advancing structure of claim 1, wherein the sideboard at both ends of the gantry body is arranged symmetrically.

6. Gantry advancing structure according to claim 1, characterized in that a balancing valve is connected to the drive motor.

7. The gantry advancing structure according to claim 1, wherein the gantry body comprises a mounting base plate, the side plates are connected to both sides of the mounting base plate, and a mounting seat is provided on the mounting base plate and connected to the driving motor.

8. The gantry advancing structure according to claim 1, wherein an open slot is provided on the mounting base plate.

9. A forklift comprising the mast advancing mechanism according to any one of claims 1 to 8 and a body, wherein runners are provided on both sides of the body, rollers provided on one end side plate of the mast body are disposed inside the runners on one side of the body, and rollers provided on the other end side plate of the mast body are disposed inside the runners on the other side of the body.

10. The lift truck of claim 9, wherein a tensioning device is attached to said truck body, said chain being attached to said tensioning device.