CN214879963U - Forklift fork distance-adjusting oil way system - Google Patents
Forklift fork distance-adjusting oil way system Download PDFInfo
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- CN214879963U CN214879963U CN202121126510.5U CN202121126510U CN214879963U CN 214879963 U CN214879963 U CN 214879963U CN 202121126510 U CN202121126510 U CN 202121126510U CN 214879963 U CN214879963 U CN 214879963U
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Abstract
The utility model discloses a fork distance-adjusting oil circuit system of a forklift, which relates to the field of forklifts, and comprises a left oil cylinder driving a right fork to move and a right oil cylinder driving the left fork to move, a three-position four-way valve which is communicated with the left oil cylinder and the right oil cylinder and is used for adjusting the circulation direction of an oil circuit, the utility model has simple structure, through the distance-adjusting oil circuit system fixed on the fork carrier, 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 fork carrier can form a circulating oil circuit, the flow direction of the oil circuit can be changed through the valve position adjustment of the three-position four-way valve, thereby reach the regulation to controlling hydro-cylinder motion state, the fork can move, be close to in step, keep away from and the multiple motion mode that the unilateral fork was adjusted in step left side in the fork frame about the messenger, the utility model discloses well fork truck realizes simultaneously that the integrated configuration that above-mentioned action adopted is simpler, makes the fork can be suitable for more complicated fork truck operation scene through this fork truck roll adjustment oil piping system.
Description
Technical Field
The utility model relates to a fork truck field specifically is a fork truck fork roll adjustment oil piping system.
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.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fork truck fork roll adjustment oil piping system improves through the roll adjustment circulation system to fork truck itself, adds the tribit cross valve between hydro-cylinder and business turn over oil pipe way about to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a fork truck fork roll adjustment oil piping system includes: the left oil cylinder drives the right fork to move, and the right oil cylinder drives the left fork to move; the oil supply pipe, the oil outlet pipe, the left oil cylinder and the right oil cylinder are communicated and matched with the three-position four-way valve to form a plurality of circulating oil paths.
As a further aspect of the present 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.
As a further aspect of the present 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 aspect of the present invention: the three-position four-way valve is an electromagnetic valve and is electrically connected with an operating button, and the distance-adjusting oil circuit system further comprises a speed-adjusting valve connected with the oil pipe.
As a further aspect of the present invention: the left oil cylinder and the right oil cylinder are connected with a throttle valve, the right oil cylinder is connected with a multi-way valve 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.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses novel structure, through fixing the roll adjustment oil piping system on the fork frame, can form circulation oil circuit with the last hydro-cylinder of controlling of fork truck, tribit cross valve and advance oil pipe and play oil pipe, and this oil circuit can change its flow direction through the valve position regulation of tribit cross valve to reach the regulation to controlling hydro-cylinder motion state, the fork can move in the fork frame is synchronous left side about the messenger, move to the right side, be close to in step, keep away from in step and the multiple motion mode that the unilateral fork was adjusted, the utility model discloses well fork truck realizes simultaneously that the integrated configuration that above-mentioned action adopted is simpler, makes the fork can be suitable for more complicated fork truck operation scene through this fork truck roll adjustment oil piping system.
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 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, in an embodiment of the present invention, a fork distance-adjusting oil circuit system of a forklift includes a left oil cylinder driving a right fork to move, and a right oil cylinder driving the left fork to move; the oil supply pipe, the oil outlet pipe, the left oil cylinder and the right oil cylinder are communicated and matched with the three-position four-way valve to form a plurality of circulating oil paths.
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, 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, and the left fork and the right fork can be adjusted in the horizontal direction under the action of the three-position four-way valve and the left oil cylinder and the right oil cylinder.
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 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.
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 three-position four-way valve can be but not limited to an electromagnetic valve, the electromagnetic valve is electrically connected with an operating button and can be controlled by the operating button, the button is respectively provided with three marks of a middle position, a side shift and a distance adjustment, only the single fork moves laterally when in the middle position, and the operating button is connected with the electromagnetic valve by a power line and is controlled. The distance-adjusting oil circuit system also comprises a speed-adjusting valve connected with the oil pipe, 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 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 movement speeds of the left oil cylinder and the right oil cylinder can be kept the same under the action of the throttle valves.
A forklift comprises a left fork and a right fork, and a fork frame 10 for suspending the left fork and the right fork, wherein the left fork and the right fork are both composed of a vertical section and a horizontal section, the end of the fork frame far away from the fork is fixedly connected with a column plate 32, the upper end of the column plate is provided with a fixed arm 31 for fixing the fork frame on the fork truck, the fork frame is formed by fixedly connecting a left side plate and a right side plate, an upper sliding shaft 11 and a lower sliding shaft 12 are transversely fixed between the left side plate and the right side plate, one end of the left fork close to the fork frame is fixedly connected with an upper sliding block 25 which can penetrate through an upper sliding shaft, one end of the right fork close to the fork frame is fixedly connected with a lower sliding block 26 capable of penetrating through a lower sliding shaft, and compared with a connection mode that the vertical section of the fork is directly hung on the fork frame in the prior art, the fork hanging device can firmly hang the fork in the vertical direction, and the possibility that the fork falls off from the fork frame is prevented. 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 21 and left fork horizontal segment 22, right side fork includes right fork vertical section 23 and right fork horizontal segment 24, go up equal fixedly connected with crashproof board 27 on sliding shaft and the lower sliding shaft, crashproof board sets up between the fork about, because the horizontal span of upper and lower sliding shaft is longer, and crashproof board is used for preventing upper and lower sliding shaft from being out of shape, and crashproof board sets up on crossbeam board about simultaneously, also plays certain additional strengthening to crossbeam board about to.
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 15 fixed on side plates 16, and the oil cylinder connecting plates for fixing the left oil cylinder and the right oil cylinder are staggered up and down, 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 fork truck evidence whole car.
During the working process of the fork of the forklift, the following operation modes of the 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 the moving directions of the pistons of the two oil cylinders are opposite.
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 is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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 (5)
1. The utility model provides a fork roll adjustment oil piping system of fork truck which characterized in that includes:
the left oil cylinder drives the right fork to move, and the right oil cylinder drives the left fork to move;
a three-position four-way valve which is communicated with the left oil cylinder and the right oil cylinder and is used for adjusting the circulation direction of an oil circuit,
and the oil inlet pipe and the oil outlet pipe are connected with the three-position four-way valve, so that the oil inlet pipe, the oil outlet pipe, the left oil cylinder and the right oil cylinder are communicated and form a plurality of circulating oil paths by matching with the three-position four-way valve.
2. The forklift fork distance-adjusting oil circuit system according to 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 ports of the three-position four-way valve.
3. The forklift fork distance-adjusting oil circuit system according to claim 2, wherein the left and right oil cylinders each include a rod cavity and a rodless cavity, rod cavity oil ports communicated with the oil pipe are respectively provided on the rod cavities of the left and right oil cylinders, rodless cavity oil ports communicated with the oil pipe are respectively provided on the rodless cavities of the left and right oil cylinders, the rod cavity oil port of the left oil cylinder is oil port c, the rodless cavity oil port is oil port d, the rod cavity oil port of the right oil cylinder is oil port b, and the rodless cavity oil port is oil port a.
4. The forklift fork distance-adjusting oil line system according to claim 1, wherein the three-position four-way valve is a solenoid valve and is electrically connected with an operation button, and the distance-adjusting oil line system further comprises a speed-adjusting valve connected with an oil pipe.
5. The forklift fork distance-adjusting oil line system according to claim 3, wherein the rod chamber and the rodless chamber of the left and right oil cylinders are both connected with a throttle valve, the right oil cylinder is connected with a multi-way valve which is connected with an oil inlet and outlet pipe, and the left oil cylinder is connected with the multi-way valve through a three-position four-way valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121126510.5U CN214879963U (en) | 2021-05-24 | 2021-05-24 | Forklift fork distance-adjusting oil way system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121126510.5U CN214879963U (en) | 2021-05-24 | 2021-05-24 | Forklift fork distance-adjusting oil way system |
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| CN214879963U true CN214879963U (en) | 2021-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259025A (en) * | 2022-07-27 | 2022-11-01 | 重庆大江智防特种装备有限公司 | Fork moving control system of forklift |
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2021
- 2021-05-24 CN CN202121126510.5U patent/CN214879963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259025A (en) * | 2022-07-27 | 2022-11-01 | 重庆大江智防特种装备有限公司 | Fork moving control system of forklift |
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