CN218088824U

CN218088824U - Portal and fork truck thereof

Info

Publication number: CN218088824U
Application number: CN202222579460.7U
Authority: CN
Inventors: 方紫剑; 燕琳琳; 高磊
Original assignee: Banyitong Science & Technology Developing Co ltd
Current assignee: Banyitong Science & Technology Developing Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-20
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses a portal frame and a forklift thereof, which comprises an outer portal frame; the middle door frame is connected with the outer door frame in a lifting manner; third portal, its liftable and well portal be connected, what the liftable was provided with on the third portal has the side to move and pivoted fork subassembly, be provided with on the third portal with driver electric connection's electronic jar, wherein: the lifting oil cylinder is arranged on the outer door frame and used for driving the middle door frame to lift, a first chain wheel is arranged on the middle door frame, a first chain is arranged on the first chain wheel in a winding mode, and the two ends of the first chain are connected with the outer door frame and the third door frame respectively, so that the third door frame can lift by twice the stroke of the middle door frame. The utility model discloses a setting is by electronic jar driven third portal, and electronic jar drive third portal plays to rise, and it is reliable to operate steadily, and the action is accurate, can be steady, accurate play to the target height that rises, and speed is controllable, is convenient for realize playing to rise fast and slow down and stop, efficient, strike for a short time.

Description

Portal and fork truck thereof

Technical Field

The utility model relates to a fork truck portal equipment technical field specifically is a portal and fork truck thereof.

Background

Chinese patent publication No.: CN111977572A discloses three-way AGV fork truck, includes: the forklift truck comprises a truck body and a fork mechanism, wherein the fork mechanism is arranged in front of the truck body, the truck body comprises a driving motor, a storage battery box, a forward driving wheel and a rotary driving wheel, the storage battery box and the driving motor are arranged in a truck box behind the truck body, a storage battery box charging port is arranged at the bottom of the truck body, the number of the forward driving wheels is four, the forward driving wheels are respectively arranged in front of the truck body and on the left and right, and the rotary driving wheel is arranged in the middle position behind the truck body; the fork mechanism comprises a fork, a lifting structure, a translation structure and a rotating structure, wherein the lifting structure is connected with the translation structure in a sliding mode, the translation structure is connected with the rotating structure in a sliding mode, and the rotating structure is connected with the fork in a rotating mode. However, the forklift still has the following disadvantages in the actual use process: because the lifting of the portal frame is driven by the lifting oil cylinder, when the high-lift forklift is lifted to a high position with load, the hydraulic impact can cause the shaking of the portal frame and even the whole forklift, and certain danger exists; meanwhile, at the moment that the forklift stops after being lifted, the hydraulic rubber tube generates elastic deformation under the action of the pressure of hydraulic oil in the tube, and the phenomenon that the pallet fork vibrates up and down within about several seconds is reflected at the pallet fork; in addition, the control response speed of the hydraulic system is not high enough, so that the accuracy of the stop position of the fork is poor when the lifting is stopped.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portal frame and fork truck thereof to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a portal frame comprises

An outer gantry;

the middle door frame is connected with the outer door frame in a lifting manner;

the third portal is connected with the middle portal in a lifting manner, a fork assembly capable of laterally moving and rotating is arranged on the third portal in a lifting manner, and an electric cylinder electrically connected with a driver is arranged on the third portal so as to drive the fork assembly to lift;

wherein: the outer gantry is provided with a lifting oil cylinder for driving the middle gantry to lift, the middle gantry is provided with a first chain wheel, a first chain is arranged on the first chain wheel in a winding mode, and two ends of the first chain are connected with the outer gantry and a third gantry respectively, so that the third gantry can lift with twice of the stroke of the middle gantry.

Preferably, the third portal is an additional portal, the liftable be provided with the driver's cabin subassembly on the well portal, and the driver's cabin subassembly is connected with first chain one end to make the driver's cabin subassembly go up and down with the twice stroke of lifting oil cylinder, be provided with first horizontal frame on the driver's cabin subassembly, mobilizable first crane span structure that is provided with on the first horizontal frame, first crane span structure passes through the rotatable additional portal of connection of swing cylinder, be provided with electronic jar on the additional portal, the flexible end of electronic jar is provided with the second sprocket, it is provided with the second chain to surround on the second sprocket, and additional portal is connected to second chain one end, and the fork subassembly is connected to the other end to the drive fork subassembly goes up and down with the twice stroke of electronic jar.

Preferably, a control panel is arranged in the cab assembly and comprises a digital key panel, an auxiliary lifting button and a main lifting button.

Preferably, the third portal is interior portal, and interior portal is connected with first chain one end to make interior portal go up and down with the lift cylinder twice stroke, the liftable be connected with the carriage assembly on the interior portal, be provided with the electronic jar with driver electric connection on the interior portal, the flexible end of electronic jar is provided with the third sprocket, the third chain is provided with in the winding on the third sprocket, and the both ends of third chain are connected with interior portal and carriage assembly respectively, so that the carriage assembly can go up and down with electronic jar twice stroke, be provided with the horizontal frame of second on the carriage assembly, the mobilizable second crane span structure that is provided with on the horizontal frame of second, the rotatable fork subassembly that is connected with of second crane span structure other end.

Preferably, the forklift further comprises a main stay wire encoder and an auxiliary stay wire encoder, wherein the main stay wire encoder is arranged on the forklift body to detect the lifting height of the third gantry, and the auxiliary stay wire encoder is used for detecting the lifting height of the fork assembly.

The application still relates to a fork truck, include the aforesaid a portal.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has the advantages that the third portal frame driven by the electric cylinder is arranged, the third portal frame driven by the electric cylinder is lifted, the operation is stable and reliable, the action is accurate, the target height can be stably and accurately lifted, the speed is controllable, the quick lifting and the deceleration stop are convenient to realize, the efficiency is high, and the impact is small; the electric cylinder has the advantages of silence, energy conservation, environmental protection and the like when being lifted, and the hydraulic oil cylinder, the hydraulic oil pipe, the matched sealing element and the like belong to vulnerable parts, so that the later maintenance cost is higher, and the maintenance cost of the electric cylinder is low.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is an exploded view of the first embodiment of the present invention;

FIG. 3 is a structural diagram of an additional door frame in the first embodiment of the present invention;

fig. 4 is a schematic structural view of a cab assembly according to a first embodiment of the present invention;

FIG. 5 is an exploded view of a second embodiment of the present invention;

in the figure: the automatic control device comprises an outer gantry 1, a middle gantry 2, an additional gantry 3, an inner gantry 4, a fork assembly 5, a driver 6, an electric cylinder 7, a lifting oil cylinder 8, a first chain wheel 9, a first chain 10, a cab assembly 11, a first transverse frame 12, a first bridge frame 13, a swinging cylinder 14, a second chain wheel 15, a second chain 16, a sliding frame assembly 17, a third chain wheel 18, a third chain wheel 19, a second transverse frame 20, a second bridge frame 21, a main stay wire encoder 22 and an auxiliary stay wire encoder 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

the first embodiment is as follows:

a portal frame comprises

The outer gantry 1 is of a rectangular frame structure, the lower end of the outer gantry 1 is fixedly mounted with a vehicle body, and rollers and sliding chutes are arranged on the outer gantry 1;

the middle portal 2 is connected with the outer portal 1 in a lifting manner through a roller and a sliding groove, so that the middle portal 2 can move linearly up and down along the height direction of the outer portal 1 in a restrained manner;

the third gantry is connected with the middle gantry 2 in a lifting manner, a fork assembly 5 capable of laterally moving and rotating is arranged on the third gantry in a lifting manner, an electric cylinder 7 electrically connected with a driver 6 is arranged on the third gantry to drive the fork assembly 5 to lift, and the electric cylinder 7 drives the third gantry to lift; the electric cylinder has the advantages of silence, energy conservation, environmental protection and the like when being lifted, the hydraulic oil cylinder, the hydraulic oil pipe, the matched sealing element and the like belong to vulnerable parts, the later maintenance cost is high, and the maintenance cost of the electric cylinder 7 is low;

wherein: a lifting oil cylinder 8 is arranged on the outer gantry 1, the fixed end of the lifting oil cylinder 8 is arranged on the outer gantry 1, the telescopic end of the lifting oil cylinder 8 is connected with the middle gantry 2, and the middle gantry 2 is driven to lift through the expansion of the lifting oil cylinder 8; the middle portal frame 2 is provided with a first chain wheel 9, a first chain 10 is arranged on the first chain wheel 9 in a surrounding mode, and two ends of the first chain 10 are connected with the outer portal frame 1 and the third portal frame respectively, so that the third portal frame can lift by twice the stroke of the middle portal frame 2 (or the lifting oil cylinder 8).

In the technical scheme of this embodiment, the third portal frame is an additional portal frame 3, the middle portal frame 2 is connected with a cab assembly 11 through a sliding chute and a roller, the cab assembly 11 is connected with one end of a first chain 10, so that the cab assembly 11 can be lifted and lowered by twice the stroke of a lifting oil cylinder 8, a first transverse frame 12 is fixedly arranged on the cab assembly 11, a first bridge frame 13 is movably arranged on the first transverse frame 12, and the first bridge frame 13 is clamped in a guide rail on the first transverse frame 12 through composite rollers at the upper end and the lower end, so that the first bridge frame 13 can realize the constrained left and right side movement; first crane span structure 13 is through the rotatable additional portal 3 of connection of swing jar 14, make additional portal 3 can wind swing jar 14 axle center left and right sides rotation 180, be provided with electronic jar 7 on the additional portal 3, electronic jar 7 is flexible to be served and is provided with second sprocket 15, it is provided with second chain 16 to surround on the second sprocket 15, and additional portal 3 is connected to 16 one end of second chain, fork subassembly 5 is connected to the other end, it goes up and down with the twice stroke of electronic jar 7 to drive fork subassembly 5, fork subassembly 5 passes through the gyro wheel joint in the spout of additional portal 3 both sides, make fork subassembly 5 can realize the upper and lower linear motion who receives the restraint.

A stay wire encoder 22 is arranged on the forklift body, a stay wire leading-out end of the stay wire encoder 22 is fixed on the cab assembly 11 so as to detect the lifting height (main lifting height) of the cab assembly 11 (or the additional gantry 3), and a stay wire leading-out end of the auxiliary stay wire encoder 23 is fixed on the fork assembly 5 so as to detect the lifting height (auxiliary lifting height) of the fork assembly 5; a digital key panel, an auxiliary lifting button and a main lifting button are arranged on the cab component 11 at the same time;

the working principle is as follows: when the main lifting button is pressed, the forklift system responds, hydraulic oil enters the lifting oil cylinder 8, a piston rod of the hydraulic oil jacks the middle portal frame 2, and meanwhile, the cab assembly 11 is pulled by the first chain 10 to lift by twice of the stroke of the lifting oil cylinder 8, and the process is the main lifting. When the auxiliary lifting button is pressed, the forklift system responds, the driver 6 obtains a signal to drive the electric cylinder 7 to act, the piston rod of the electric cylinder jacks up the second chain wheel 15, and meanwhile, the second chain 16 pulls the pallet fork assembly 5 to lift by twice the stroke of the electric cylinder 7, and the process is additional electric lifting and is also called auxiliary lifting. In the main lifting process, the stay wire encoder 22 records the main lifting height and feeds back the main lifting height to the forklift system, and in the auxiliary lifting process, the auxiliary stay wire encoder 23 records the auxiliary lifting height and feeds back the auxiliary lifting height to the forklift system. Through the input on the digital key panel, the fork can be lifted to the set height.

When the lifting height is controlled manually, the main lifting button and the auxiliary lifting button can be pressed respectively, and the proposal is that when the lifting height is close to the target height, the auxiliary lifting button is pressed to start additional electric lifting to finish tail-segment lifting so as to reach the target height more stably and accurately. The preset height position is automatically reached through the input on the digital key panel, and the main lifting height and the auxiliary lifting height are distributed by the forklift system controller, so that the lifting at the tail section is realized by electric driving.

Example two:

the difference from the above embodiment is that:

the third portal is an inner portal 4 with a rectangular frame structure and is connected with the middle portal 2 in a lifting way through a corresponding roller and a sliding groove to form a three-section full-free portal, the inner portal 4 is connected with one end of a first chain 10 to enable the inner portal 4 to lift by twice of a stroke of a lifting oil cylinder 8, in the technical scheme of the embodiment, a cab component 11 is fixedly arranged on a vehicle body and does not have a lifting function, the inner portal 4 is connected with a sliding frame component 17 in a lifting way through the sliding groove and the roller, two groups of electric cylinders 7 electrically connected with a driver 6 are symmetrically arranged on two sides of the inner portal 4, a third chain wheel 18 is arranged at the telescopic end of each electric cylinder 7, a third chain 19 is arranged on each third chain wheel 18 in a surrounding way, two ends of a third chain 19 are respectively connected with the inner gantry 4 and the sliding frame assembly 17, so that the sliding frame assembly 17 can lift by twice the stroke of the electric cylinder 7, a second transverse frame 20 is fixedly arranged on the sliding frame assembly 17, a second bridge frame 21 is movably arranged on the second transverse frame 20, the second bridge frame 21 is clamped in guide rails at the upper end and the lower end of the second transverse frame 20 through composite rollers at the upper end and the lower end, so that the second bridge frame 21 can move along the constrained left side and the right side of the second bridge frame 21, the other end of the second bridge frame 21 is rotatably connected with a fork assembly 5 through a motor, and the fork assembly 5 can rotate by 180 degrees left and right by taking the axis of the motor as the center of a circle;

in the present embodiment, the main stay encoder 22 is disposed on the vehicle body, and its stay leading end is fixed on the inner door frame 4 to detect the inner door frame

4 lifting height (main lifting height), the pull wire leading-out end of the auxiliary pull wire encoder 23 is fixed on the sliding frame assembly 17 and is used for detecting the lifting height (auxiliary lifting height) of the pallet fork assembly 5.

From the principle, main lifting unit adopts electronic jar also feasible and more have the performance advantage, nevertheless main lifting unit, because the load is great, and the stroke that main lifting unit needs will be greater than vice the rising far away, and the cost of the electronic jar of big load capacity and overlength stroke can be very high, so from prior art and economic nature consideration, the utility model provides a hydraulic pressure main lifting and additional electronic lifting device compromise the best scheme.

The application still relates to a fork truck, including foretell portal.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A portal, its characterized in that: comprises that

An outer gantry (1);

the middle door frame (2) is connected with the outer door frame (1) in a lifting manner;

the third portal is connected with the middle portal (2) in a lifting manner, a fork assembly (5) capable of laterally moving and rotating is arranged on the third portal in a lifting manner, and an electric cylinder (7) electrically connected with a driver (6) is arranged on the third portal so as to drive the fork assembly (5) to lift;

wherein: the lifting mechanism is characterized in that a lifting oil cylinder (8) is arranged on the outer gantry (1) and used for driving the middle gantry (2) to lift, a first chain wheel (9) is arranged on the middle gantry (2), a first chain (10) is arranged on the first chain wheel (9) in an encircling mode, and two ends of the first chain (10) are connected with the outer gantry (1) and the third gantry respectively, so that the third gantry can lift by twice the stroke of the middle gantry (2).

2. A mast according to claim 1, characterized in that: the third portal is an additional portal (3), the up-down driving cab assembly (11) is arranged on the middle portal (2), the driving cab assembly (11) is connected with one end of a first chain (10) so that the driving cab assembly (11) can lift with twice of stroke of a lifting oil cylinder (8), a first transverse frame (12) is arranged on the driving cab assembly (11), a first bridge frame (13) is movably arranged on the first transverse frame (12), the first bridge frame (13) is rotatably connected with the additional portal (3) through a swinging cylinder (14), an electric cylinder (7) is arranged on the additional portal (3), a second chain wheel (15) is arranged on the telescopic end of the electric cylinder (7), a second chain (16) is arranged on the second chain wheel (15) in a winding manner, one end of the second chain (16) is connected with the additional portal (3), the other end of the second chain is connected with the pallet fork assembly (5), and the pallet fork assembly (5) is driven to lift with twice of stroke of the electric cylinder (7).

3. A mast according to claim 2, characterized in that: a control panel is arranged in the cab assembly (11), and the control panel comprises a digital key panel, an auxiliary lifting button and a main lifting button.

4. A mast according to claim 1, characterized in that: the third portal is interior portal (4), and interior portal (4) are connected with first chain (10) one end to make interior portal (4) go up and down with two times stroke of lifting oil cylinder (8), the liftable be connected with carriage assembly (17) on interior portal (4), be provided with electronic jar (7) with driver (6) electric connection on interior portal (4), electronic jar (7) flexible end is provided with third sprocket (18), it is provided with third chain (19) to encircle on third sprocket (18), and the both ends of third chain (19) are connected with interior portal (4) and carriage assembly (17) respectively, so that carriage assembly (17) can go up and down with electronic jar (7) twice stroke, be provided with horizontal frame of second (20) on carriage assembly (17), the mobilizable second crane span frame (21) that is provided with on the horizontal frame of second (20), the other end of second crane span frame (21) is connected with fork assembly (5).

5. A mast according to any one of claims 3 or 4, characterized in that: still include main encoder (22) of acting as go-between and vice encoder (23) of acting as go-between, main encoder (22) of acting as go-between sets up on the automobile body to detect third portal hoisting height, vice encoder (23) of acting as go-between is used for detecting fork subassembly (5) hoisting height.

6. A forklift, characterized in that: comprising a portal according to any of the claims 1-5.