CN113307188A - Fork truck capable of realizing multidirectional lateral movement and distance adjustment - Google Patents
Fork truck capable of realizing multidirectional lateral movement and distance adjustment Download PDFInfo
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- CN113307188A CN113307188A CN202110565236.XA CN202110565236A CN113307188A CN 113307188 A CN113307188 A CN 113307188A CN 202110565236 A CN202110565236 A CN 202110565236A CN 113307188 A CN113307188 A CN 113307188A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
- B66F9/142—Movements of forks either individually or relative to each other
- B66F9/143—Movements of forks relative to each other - symmetric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
- B66F9/142—Movements of forks either individually or relative to each other
- B66F9/144—Movements of forks relative to each other - independent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
- B66F9/146—Side shift, i.e. both forks move together sideways relative to fork support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a forklift truck capable of realizing multi-azimuth lateral shifting and distance adjustment of a fork, which relates to the field of forklifts, and comprises a left fork and a right fork connected with a fork frame of the forklift truck, and a distance adjustment oil circuit system fixed on the fork frame, wherein the forklift truck is simple in structure, a left oil cylinder, a right oil cylinder, a three-position four-way valve, an oil inlet pipe and an oil outlet pipe on the forklift truck can form a circulating oil circuit through the distance adjustment oil circuit system fixed on the fork frame, and the circulating oil circuit can change the flow direction of the circulating oil circuit through the valve position adjustment of the three-position four-way valve, so that the regulation of the motion state of the left oil cylinder and the right oil cylinder is realized, the left fork and the right fork can synchronously move left and right on the fork frame, synchronously approach and synchronously move away and synchronously, and regulate a single-side fork, compared with the prior art, the invention not only can simultaneously realize various regulation forms of the fork of the forklift truck, but also has simpler combined structure adopted by the fork realizing various regulation forms, the fork can be suitable for more complicated forklift operation scenes.
Description
Technical Field
The invention relates to the field of forklifts, in particular to a forklift with a fork capable of realizing multi-azimuth lateral shifting and distance adjustment.
Background
The telescopic arm forklift has higher requirements on the overall dimension, the weight of the whole truck and the bearing capacity of the whole truck, the standard fork cannot meet the length requirement, and meanwhile, in the actual use process, a user has the requirements on the fork to simultaneously realize homodromous side movement and reverse side movement (the fork moves leftwards or rightwards simultaneously), and simultaneously realize relative distance adjustment and reverse distance adjustment (namely, the distance between the fork is reduced and increased) and the requirement on single-fork distance adjustment.
To above-mentioned fork truck's function among the prior art, can't satisfy and realize simultaneously in a fork truck, realize among the prior art moreover that the hydro-cylinder that the mode of fork combination formula action used and the oil circuit of arranging are comparatively loaded down with trivial details, and the integrated configuration of application is more, can not be fine satisfy user's actual demand.
Disclosure of Invention
The invention aims to provide a forklift with a fork capable of realizing multi-azimuth lateral shifting and distance adjustment.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a fork truck that diversified side shift roll adjustment can be realized to fork, fork truck includes the fork about linking to each other with the fork frame of fork truck, fork truck is still including fixing the roll adjustment oil piping system on the fork frame, roll adjustment oil piping system including drive about the fork remove hydro-cylinder, with about the hydro-cylinder be linked together and be used for adjusting the tribasic cross valve of oil circuit direction and the oil pipe that advances who links to each other with the tribasic cross valve with go out oil pipe, make advance oil pipe, go out oil pipe and control the hydro-cylinder and be linked together and form the circulation oil circuit, the output of left side hydro-cylinder links to each other with right fork is fixed, the output of controlling the hydro-cylinder is fixed on the fork frame, and controls the hydro-cylinder stagger fixedly in the vertical direction of fork frame.
As a further scheme of the invention: the three-position four-way valve comprises an oil port A, an oil port B, an oil port P and an oil port T, the left oil cylinder is provided with an oil port d and an oil port c, the right oil cylinder is provided with an oil port B and an oil port a, and the oil ports a/B/c/d are respectively connected with the T/P/B/A port of the three-position four-way valve through high-pressure rubber pipes.
As a further scheme of the invention: the left oil cylinder and the right oil cylinder respectively comprise a rod cavity and a rodless cavity, rod cavity oil ports communicated with the oil pipe are formed in the rod cavity of the left oil cylinder and the rod cavity of the right oil cylinder, rodless cavity oil ports communicated with the oil pipe are formed in the rodless cavity of the left oil cylinder and the rodless cavity oil ports of the right oil cylinder, the rod cavity oil ports of the left oil cylinder are oil ports c, the rodless cavity oil ports of the left oil cylinder are oil ports d, and the rod cavity oil ports of the right oil cylinder are oil ports b and the rodless cavity oil ports of the right oil cylinder are oil ports a.
As a further scheme of the invention: the three-position four-way valve is electrically connected with an operating button, and the distance-adjusting oil circuit system further comprises a speed-adjusting valve.
As a further scheme of the invention: the left and right forks are respectively composed of a vertical section and a horizontal section, and the vertical section and the horizontal section of the left and right forks are connected through a detachable axle center.
As a further scheme of the invention: the fork frame is formed by fixedly connecting a left side plate and a right side plate, an upper sliding shaft and a lower sliding shaft are fixed between the left side plate and the right side plate in a traversing manner, an upper sliding block capable of penetrating through the upper sliding shaft is fixedly connected to one end, close to the fork frame, of the left fork, and a lower sliding block capable of penetrating through the lower sliding shaft is fixedly connected to one end, close to the fork frame, of the right fork.
As a further scheme of the invention: and the upper and lower sliding blocks are fixedly connected with a shaft sleeve on one end surface contacted with the upper and lower sliding shafts.
As a further scheme of the invention: the upper sliding shaft and the lower sliding shaft are fixedly connected with an anti-collision plate, the anti-collision plate is fixedly connected with the fork frame, and the anti-collision plate is arranged between the left fork and the right fork in the horizontal direction.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel structure, and can form a circulating oil circuit by a left oil cylinder, a right oil cylinder, a three-position four-way valve, an oil inlet pipe and an oil outlet pipe on the forklift through a distance adjusting oil circuit system fixed on the fork frame, and the oil circuit can change the flow direction of the oil circuit through the valve position adjustment of the three-position four-way valve, thereby achieving the adjustment of the motion state of the left oil cylinder and the right oil cylinder, so that the left fork and the right fork can synchronously move leftwards and rightwards on the fork frame, synchronously approach and synchronously leave, and can realize multiple motion modes of single-side fork adjustment.
Drawings
FIG. 1 is a schematic diagram of a forklift fork frame and forks;
FIG. 2 is a schematic diagram of the construction of a forklift fork carriage;
FIG. 3 is a schematic structural view of a three-position four-way valve for a forklift;
FIG. 4 is a schematic diagram of the flow direction of hydraulic oil in the oil cylinder when the left and right forks of the forklift synchronously move to the left;
FIG. 5 is a schematic diagram of the flow direction of hydraulic oil in the oil cylinder when the left and right forks of the forklift synchronously move to the right;
FIG. 6 is a schematic diagram of the flow of hydraulic oil in the cylinders when the left and right forks of a forklift are synchronously separated;
FIG. 7 is a schematic diagram of the flow direction of hydraulic oil in the oil cylinder when the left and right forks of the forklift are synchronously closed;
FIG. 8 is a schematic diagram of the flow of hydraulic fluid from the cylinder when the left fork of a forklift is moved to one side;
in the figure: 10-a fork frame, 11-an upper sliding shaft, 12-a lower sliding shaft, 13-a left oil cylinder, 14-a right oil cylinder, 15-an oil cylinder connecting plate, 16-a side plate, 21-a left fork vertical section, 22-a left fork horizontal section, 23-a right fork vertical section, 24-a right fork horizontal section, 25-an upper sliding block, 26-a lower sliding block, 27-an anti-collision plate, 31-a fixed arm, 32-a stand column plate and 40-a three-position four-way valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, the forklift with the fork capable of realizing multi-azimuth lateral shifting and distance adjustment comprises a left fork and a right fork and a fork frame for suspending the left fork and the right fork, wherein the left fork and the right fork are respectively composed of a vertical section and a horizontal section, one end of the fork frame, far away from the forks, is fixedly connected with an upright column plate 32, the upper end of the upright column plate 32 is provided with a fixed arm 31, the left fork and the right fork are connected with a left oil cylinder and a right oil cylinder, and the left oil cylinder and the right oil cylinder are fixed on the fork frame.
The fixed arm 31 is used for quickly replacing a fork frame and a structure fixed with the fork frame, the fork frame is formed by fixedly connecting a left side plate and a right side plate, an upper sliding shaft and a lower sliding shaft are fixedly arranged between the left side plate and the right side plate in a traversing manner, an upper sliding block capable of penetrating through the upper sliding shaft is fixedly connected to one end, close to the fork frame, of the left fork, and a lower sliding block capable of penetrating through the lower sliding shaft is fixedly connected to one end, close to the fork frame, of the right fork. Shaft sleeves are arranged between the upper sliding block and the lower sliding block and between the upper sliding shaft and the lower sliding shaft, so that abrasion to the sliding blocks when the sliding shafts move in the sliding blocks is prevented.
The fork includes left fork and right fork, left side fork includes left fork vertical section and left fork horizontal segment, right side fork includes right fork vertical section and right fork horizontal segment, go up the epaxial equal fixedly connected with anticollision board of sliding shaft and lower sliding, anticollision board sets up on the horizontal direction about between the fork, because the horizontal span of sliding shaft is longer from top to bottom, anticollision board is used for preventing that sliding shaft warp from top to bottom, and anticollision board sets up on crossbeam board from top to bottom simultaneously, also plays certain additional strengthening to crossbeam board from top to bottom.
The left and right forks are connected with left and right oil cylinders, the left and right oil cylinders are fixed on the fork frame, the left and right oil cylinders are connected and fixed with the fork frame through oil cylinder connecting plates fixed on a fork frame side plate 16, and the oil cylinder connecting plates for fixing the left oil cylinder and the right oil cylinder are staggered up and down in the vertical direction, so that the left and right oil cylinders do not interfere with each other in the working process of driving the left and right forks. Control the fork constitute by vertical section and horizontal segment, the vertical section and the horizontal segment of controlling the fork all link to each other through dismantling the axle center, and the fork adopts above-mentioned structure, can change the fork of different models according to the in-service use needs, and the fork of this kind of form simultaneously, the horizontal segment can rotate vertical section relatively, after fork truck stop work, can be rotatory and fixed with the horizontal segment fork, makes the fork accomodate, reduces the area of the whole car of fork truck.
The left oil cylinder and the right oil cylinder are both provided with a rod cavity and a rodless cavity, a rod cavity oil port communicated with the oil pipe is arranged on the rod cavity, a rodless cavity oil port communicated with the oil pipe is arranged on the rodless cavity, the rod cavity is connected with a throttle valve of 6L/min, the rodless cavity is connected with a throttle valve of 10L/min, and the moving speeds of the left oil cylinder and the right oil cylinder can be kept the same under the action of the throttle valves.
Fork truck includes roll adjustment oil piping system, roll adjustment oil piping system including drive about the fork remove the hydro-cylinder, with about the hydro-cylinder be linked together and be used for adjusting the tribit cross valve of oil circuit direction and advance oil pipe and go out oil pipe that links to each other with the tribit cross valve, make advance oil pipe, go out oil pipe and control the hydro-cylinder and be linked together and form the oil circuit that circulates, the tribit cross valve includes hydraulic fluid port A, hydraulic fluid port B, hydraulic fluid port P and hydraulic fluid port T, left side hydro-cylinder is equipped with hydraulic fluid port d and hydraulic fluid port c, right side hydro-cylinder is equipped with hydraulic fluid port B and hydraulic fluid port a, hydraulic fluid port a/B/c/d passes through the high-pressure rubber tube with the T/P/B/A mouth of tribit cross valve respectively and links to each other, can carry out the ascending regulation of horizontal direction to controlling the fork under the effect of hydro-cylinder about the tribit is cross valve.
The distance-adjusting oil way system is also connected with a speed-adjusting valve, and the moving speed of the left fork and the right fork during distance adjustment can be kept the same to a certain extent. The three-position four-way valve can be but not limited to an electromagnetic valve and can be controlled by an operation button, three marks of a middle position, a side shift and a distance adjustment are respectively arranged on the button, only the single fork moves in the middle position, and the operation button is connected with the electromagnetic valve through a power line and is controlled.
The invention can adjust the pallet fork connected with the oil circuit pipeline system by additionally arranging the three-position four-way valve in the distance-adjusting oil circuit system and adjusting the connecting channel between the oil circuit and the three-position four-way valve.
The left oil cylinder comprises a rodless cavity oil port d and a rod cavity oil port c, the right oil cylinder comprises a rodless cavity oil port a and a rod cavity oil port b, the left oil cylinder is connected with the right oil cylinder through a three-position four-way valve for changing an oil way, the right oil cylinder is connected with a multi-way valve which is connected with an oil inlet pipe and an oil outlet pipe, and the left oil cylinder is connected with the multi-way valve through a three-position four-way valve.
The three-position four-way valve comprises an A port, a B port, a P port and a T port, a rodless cavity oil port d of the left oil cylinder is connected with the A port of the three-position four-way valve, a rod cavity oil port c of the left oil cylinder is connected with the B port of the three-position four-way valve, a rodless cavity oil port a of the right oil cylinder is connected with the T port of the three-position four-way valve, and a rod cavity oil port B of the right oil cylinder is connected with the P port of the three-position four-way valve. The three-position four-way valve is provided with three adjustable working positions: the three-position four-way valve comprises a left position, a middle position and a right position, wherein when the oil pipeline is positioned at the left position of the three-position four-way valve, an A port of the three-position four-way valve is connected with a T port, and a B port of the three-position four-way valve is connected with the T port; when the oil pipeline is positioned in the middle position of the three-position four-way valve, four ports of the three-position four-way valve are all in a closed state; when the oil pipeline is positioned at the right position of the three-position four-way valve, the port A of the three-position four-way valve is connected with the port P, and the port B is connected with the port T. The multi-way valve comprises a first oil port f and a second oil port e, the first oil port f is connected with an oil port b of a rod cavity of the right oil cylinder, and the second oil port e is connected with an oil port a of a rodless cavity of the right oil cylinder.
During the working process of the forklift, the following operation modes of the pallet fork exist:
as shown in fig. 4-5, when the two forks synchronously move laterally, the three-position four-way valve is in the right position, and at this time, the port a of the three-position four-way valve is connected with the port P, and the port B is connected with the port T.
1. When the two forks synchronously move to the left side, as shown in fig. 4, the oil supply pipeline enables the hydraulic oil to flow out from the port e to the rodless cavity oil port a of the right oil cylinder and the rod cavity oil port c of the left oil cylinder through the multi-way valve. When the hydraulic oil flows out from the e port of the multi-way valve, the piston of the right oil cylinder moves to the left side, and meanwhile, the hydraulic oil in the rodless cavity of the right oil cylinder flows out from the oil port b and then flows back to the oil supply pipeline from the f port of the multi-way valve; when hydraulic oil flows out from the e port of the multi-way valve and flows into the rod cavity oil port c of the left oil cylinder, the hydraulic oil flows to the T port of the three-position four-way valve firstly, flows out from the B port of the three-position four-way valve to the rod cavity oil port c of the left oil cylinder, pushes the piston of the left oil cylinder to move towards the left side, meanwhile, the hydraulic oil in the rod cavity of the left oil cylinder flows out from the oil port d and flows into the A port of the three-position four-way valve again, flows out from the P port of the three-position four-way valve and then flows back to an oil supply pipeline from the f port of the multi-way valve, so that the left oil cylinder and the right oil cylinder respectively complete respective oil circuit circulation and realize the same moving direction of the pistons of the two oil cylinders.
2. When the two forks are synchronously shifted to the right: as shown in fig. 5, the oil supply line allows hydraulic oil to flow out from the f port to the rod chamber port b of the right cylinder and the rodless chamber port d of the left cylinder through the multi-way valve. When the hydraulic oil flows out from the f port of the multi-way valve, the piston of the right oil cylinder moves towards the right side, and meanwhile, the hydraulic oil in the rod cavity of the right oil cylinder flows out from the oil port a and then flows back to the oil supply pipeline from the e port of the multi-way valve; when hydraulic oil flows out from the f port of the multi-way valve and flows into the rodless cavity oil port d of the left oil cylinder, the hydraulic oil flows to the P port of the three-position four-way valve firstly, flows out from the A port of the three-position four-way valve to the rodless cavity oil port d of the left oil cylinder, pushes the piston of the left oil cylinder to move towards the right side, meanwhile, hydraulic oil in the rodless cavity of the left oil cylinder flows out from the oil port c and flows back to the oil supply pipeline from the e port of the multi-way valve again, so that the left oil cylinder and the right oil cylinder respectively complete respective oil circuit circulation and realize the same moving direction of the pistons of the two oil cylinders.
As shown in fig. 6-7, when the forks are moved to the opposite side, the three-position four-way valve is in the left position, and the port a of the three-position four-way valve is connected to the port P, and the port B of the three-position four-way valve is connected to the port P.
3. When the two forks are synchronously separated: as shown in fig. 6, the oil supply line allows hydraulic oil to flow out from the f port to the rod chamber oil port b of the right cylinder and the rod chamber oil port c of the left cylinder through the multi-way valve. When the hydraulic oil flows out from the f port of the multi-way valve, the piston of the right oil cylinder moves towards the right side, and meanwhile, the hydraulic oil in the rod cavity of the right oil cylinder flows out from the oil port a and then flows back to the oil supply pipeline from the e port of the multi-way valve; when hydraulic oil flows out from the f port of the multi-way valve and flows into the rod cavity oil port c of the left oil cylinder, the hydraulic oil flows to the P port of the three-position four-way valve firstly, flows out from the B port of the three-position four-way valve to the rod cavity oil port c of the left oil cylinder, pushes the piston of the left oil cylinder to move towards the left side, meanwhile, hydraulic oil in the rod cavity of the left oil cylinder flows out from the oil port d, flows into the A port of the three-position four-way valve again, flows out from the T port of the three-position four-way valve, and flows back to the oil supply pipeline from the e port of the multi-way valve again, so that the left oil cylinder and the right oil cylinder respectively complete respective oil circuit circulation and realize the opposite moving directions of the pistons of the two oil cylinders.
4. When the two forks are closed synchronously: as shown in fig. 7, the oil supply pipeline enables hydraulic oil to flow out from the e port to the rodless cavity oil port a of the right oil cylinder and the rodless cavity oil port d of the left oil cylinder through the multi-way valve, when the hydraulic oil flows out from the e port of the multi-way valve, the piston of the right oil cylinder moves to the left side, and meanwhile, the hydraulic oil in the rodless cavity of the right oil cylinder flows out from the oil port b and then flows back to the oil supply pipeline from the f port of the multi-way valve; when hydraulic oil flows out from the e port of the multi-way valve and flows into the rodless cavity oil port d of the right oil cylinder, the hydraulic oil is reserved to the T port of the three-position four-way valve firstly, flows out from the A port of the three-position four-way valve to the rodless cavity oil port d of the left oil cylinder, pushes the piston of the left oil cylinder to move towards the right side, meanwhile, hydraulic oil flows out from the oil port c in the rodless cavity of the left oil cylinder, flows back to the oil supply pipeline from the f port of the multi-way valve again, and the left oil cylinder and the right oil cylinder respectively complete respective oil circuit circulation and realize that.
5. When only one side fork is moving: by controlling a switching button of the three-position four-way valve, the three-position four-way valve is firstly closed, the three-position four-way valve is located at a middle position, at the moment, each opening of the three-position four-way valve is sealed, the system is not unloaded, a working mechanism is locked, at the moment, the middle position of the switching button is pressed, as shown in fig. 8, an oil supply pipeline enables hydraulic oil to flow out from an opening f to a rodless cavity oil port b of a right oil cylinder through a multi-way valve, a piston of the right oil cylinder is enabled to move towards the right side, the hydraulic oil in a rodless cavity of the right oil cylinder flows out from an oil port a, the hydraulic oil cannot pass through the three-position four-way valve due to the fact that the three-position four-way valve is located at the middle position, the hydraulic oil flowing out from an oil port a of the right oil cylinder flows back to the right oil cylinder from the rodless cavity oil port b again, and only the right oil cylinder can play a role in adjusting the single-side fork.
The invention has novel structure and stable operation, when in use, the distance-adjusting oil circuit system fixed on the fork frame can form a circulating oil circuit by the left and right oil cylinders, the three-position four-way valve, the oil inlet pipe and the oil outlet pipe on the fork truck, and the oil circuit can change the flow direction of the oil circuit through the valve position adjustment of the three-position four-way valve, thereby achieving the adjustment of the motion state of the left and right oil cylinders, and ensuring that the left and right forks can synchronously move leftwards and rightwards, synchronously approach and synchronously move away from the fork frame and adjust the single-side forks.
The telescopic arm forklift is generally suitable for a telescopic arm forklift, the telescopic arm forklift is provided with a box which is drawn in a container, a working device of a telescopic arm extends to a goods storage position, the width of the container is generally about 2300mm, several kinds of goods in the container are placed in the width, the telescopic arm forklift is large in size, a driver and the working device are in parallel, the goods in the centralized box can be taken out by the forklift at a fixed position through multi-direction side-shifting distance adjustment of the fork, the telescopic arm forklift does not need to be moved left and right, and meanwhile compared with an implementation mode of the left and right distance adjustment of the forklift in the prior art, the telescopic arm forklift can realize the multi-direction side-shifting distance adjustment which is more stable and accurate for the fork through a simpler structure combination mode.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a fork truck that diversified side was moved roll adjustment can be realized to fork, fork truck includes the fork about linking to each other with the fork frame of fork truck, its characterized in that, fork truck is still including fixing the roll adjustment oil piping system on the fork frame, roll adjustment oil piping system including drive about the fork remove hydro-cylinder, with about the hydro-cylinder be linked together and be used for adjusting the tribit cross valve of oil circuit circulation direction and the oil pipe and go out oil pipe that advances who links to each other with the tribit cross valve, make advance oil pipe, go out oil pipe and control the hydro-cylinder be linked together and cooperate the tribit cross valve to form many oil circuit, the output and the right fork of left side hydro-cylinder are fixed continuously, the output and the left fork of right side hydro-cylinder link to each other, the non-output of controlling the hydro-cylinder is fixed on the fork frame, and control the hydro-cylinder stagger fixedly in the vertical direction of fork frame.
2. The forklift capable of realizing multi-azimuth sideshift distance adjustment of the fork as claimed in claim 1, wherein the three-position four-way valve comprises an oil port A, an oil port B, an oil port P and an oil port T, the left oil cylinder is provided with an oil port d and an oil port c, the right oil cylinder is provided with an oil port B and an oil port a, and the oil ports a/B/c/d are respectively connected with the T/P/B/A port of the three-position four-way valve through high-pressure rubber pipes.
3. The forklift capable of realizing multi-azimuth sidesway distance adjustment of the pallet fork according to claim 2, characterized in that the left and right oil cylinders respectively comprise a rod cavity and a rodless cavity, rod cavity oil ports communicated with the oil pipe are respectively arranged on the rod cavities of the left and right oil cylinders, rodless cavity oil ports communicated with the oil pipe are respectively arranged on the rodless cavities of the left and right oil cylinders, the rod cavity oil ports of the left oil cylinder are oil ports c and the rodless cavity oil ports are oil ports d, the rod cavity oil ports of the right oil cylinder are oil ports b and the rodless cavity oil ports are oil ports a.
4. The forklift with the fork capable of achieving multi-azimuth and lateral-movement distance adjustment according to claim 1, wherein the three-position four-way valve is electrically connected with an operating button, and the distance adjustment oil circuit system further comprises a speed adjustment valve.
5. The forklift with the fork capable of achieving multi-azimuth lateral shifting and distance adjusting as claimed in claim 1, wherein the left and right forks are composed of a vertical section and a horizontal section, and the vertical section and the horizontal section of the left and right forks are connected through a detachable axle center.
6. The forklift capable of achieving multi-azimuth sideshift distance adjustment according to claim 1, wherein the fork frame is fixedly connected with a left side plate and a right side plate, an upper sliding shaft and a lower sliding shaft are transversely fixed between the left side plate and the right side plate, an upper sliding block capable of penetrating through the upper sliding shaft is fixedly connected with one end of the left fork close to the fork frame, and a lower sliding block capable of penetrating through the lower sliding shaft is fixedly connected with one end of the right fork close to the fork frame.
7. The forklift capable of achieving multi-azimuth sideshift distance adjustment according to claim 6, wherein a shaft sleeve is fixedly connected to one end face of the upper sliding block, which is in contact with the upper sliding shaft, and a shaft sleeve is also fixedly connected to one end face of the lower sliding block, which is in contact with the lower sliding shaft.
8. The forklift with the forks capable of laterally shifting and adjusting the distance as claimed in claim 6, wherein the upper sliding shaft and the lower sliding shaft are fixedly connected with the anti-collision plate, the anti-collision plate is fixedly connected with the fork frame, and the anti-collision plate is horizontally arranged between the left fork and the right fork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110565236.XA CN113307188A (en) | 2021-05-24 | 2021-05-24 | Fork truck capable of realizing multidirectional lateral movement and distance adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110565236.XA CN113307188A (en) | 2021-05-24 | 2021-05-24 | Fork truck capable of realizing multidirectional lateral movement and distance adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113307188A true CN113307188A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110565236.XA Pending CN113307188A (en) | 2021-05-24 | 2021-05-24 | Fork truck capable of realizing multidirectional lateral movement and distance adjustment |
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| CN (1) | CN113307188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2616492A (en) * | 2022-03-04 | 2023-09-13 | Bamford Excavators Ltd | A side-shift fork carriage for a material handling machine |
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Application publication date: 20210827 |