CN113460917A - Multi-mode valve and automatic locking type multi-mode steering system for telescopic arm forklift - Google Patents

Multi-mode valve and automatic locking type multi-mode steering system for telescopic arm forklift Download PDF

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Publication number
CN113460917A
CN113460917A CN202110798975.3A CN202110798975A CN113460917A CN 113460917 A CN113460917 A CN 113460917A CN 202110798975 A CN202110798975 A CN 202110798975A CN 113460917 A CN113460917 A CN 113460917A
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CN
China
Prior art keywords
electromagnet
valve core
mode
steering
valve
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Pending
Application number
CN202110798975.3A
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Chinese (zh)
Inventor
陈相奇
李增彬
周萍
倪长亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou Xugong Port Machinery Co ltd
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Xuzhou Xugong Port Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuzhou Xugong Port Machinery Co ltd filed Critical Xuzhou Xugong Port Machinery Co ltd
Priority to CN202110798975.3A priority Critical patent/CN113460917A/en
Publication of CN113460917A publication Critical patent/CN113460917A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B66F9/07568—Steering arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/10—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
    • B62D5/12—Piston and cylinder
    • 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
    • B66F9/07504—Accessories, e.g. for towing, charging, locking
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The invention discloses a multi-mode valve for a telescopic arm forklift and an automatic locking multi-mode steering system, wherein the multi-mode valve comprises a shell, and a valve core, an electromagnet A, an electromagnet B and an electromagnet C which are arranged in the shell; two limiting grooves are sequentially formed in the side wall of the valve core; the electromagnet A and the electromagnet B are respectively arranged at two ends of the valve core and are used for controlling the valve core to move towards the electromagnet A or the electromagnet B; the electromagnet C is arranged on the side part of the valve core, is connected with the shell through an elastic piece and is matched with a limiting groove on the side wall of the valve core to complete locking of the valve core. The invention adds the self-locking function, and the mode can not generate the autonomous change of the valve core under the self-locking state if an emergency occurs, so that the safety performance is higher.

Description

Multi-mode valve and automatic locking type multi-mode steering system for telescopic arm forklift
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a multi-mode valve for a telescopic arm forklift and an automatic locking type multi-mode steering system.
Background
The telescopic boom forklift truck is also called a telescopic boom forklift truck, and is a multipurpose forklift truck with off-road performance. The steering system of the telescopic forklift in the prior art is mostly composed of a steering gear, a multi-mode valve and two steering cylinders. The steering gear is used for receiving a steering signal and transmitting the steering signal to the axle; the multi-mode valve is used for receiving different steering modes and switching; the front and rear oil cylinders are used for driving the axle to steer. In the driving process, the steering mode can be switched according to different operation requirements, and the steering mode switching of the telescopic boom forklift is realized through the position change of the valve core of the multi-mode valve.
Disclosure of Invention
Aiming at the problems, the invention provides a multi-mode valve for a telescopic arm forklift and an automatic locking type multi-mode steering system, wherein a self-locking function is added, if an emergency occurs, the mode cannot generate the autonomous change of a valve core in a self-locking state, and the safety performance is higher.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a multi-mode valve for a telescopic boom forklift, comprising: the electromagnetic valve comprises a shell, and a valve core, an electromagnet A, an electromagnet B and an electromagnet C which are arranged in the shell;
two limiting grooves are sequentially formed in the side wall of the valve core;
the electromagnet A and the electromagnet B are respectively arranged at two ends of the valve core and are used for controlling the valve core to move towards the electromagnet A or the electromagnet B;
the electromagnet C is arranged on the side part of the valve core, is connected with the shell through an elastic piece and is matched with a limiting groove on the side wall of the valve core to complete locking of the valve core.
Optionally, when the electromagnet A and the electromagnet B are not electrified, the valve core is in a neutral state; and the electromagnet C is not electrified, and the valve core is locked.
Optionally, when the electromagnet C is powered on, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, and the valve core is unlocked; and then the position of the valve core is controlled according to the power-on condition of the electromagnet A and the electromagnet B, the mode is switched, and after the mode switching is completed, the electromagnet C is powered off, and the valve core is locked.
Optionally, after the electromagnet C is powered on, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, the valve core is unlocked, the electromagnet a is powered on to push the valve core to move towards the electromagnet B, after the valve core moves in place, the electromagnet C is automatically powered off, and the elastic piece pushes the electromagnet C to be combined with the limiting groove on the side wall of the valve core, so that the valve core is locked.
Optionally, when the electromagnet C is powered on, the elastic member is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, the valve core is unlocked, the electromagnet B is powered on to push the valve core to move towards the electromagnet a, after the valve core is in place, the electromagnet C is automatically powered off, and the elastic member pushes the electromagnet C to be combined with the limiting groove on the side wall of the valve core, so that the valve core is locked.
In a second aspect, the present invention provides an automatic locking type multimode steering system for a telescopic boom forklift, comprising: a front axle, a front axle steering cylinder, a steering gear, a rear axle steering cylinder, and the multi-mode valve of the first aspect;
the front axle is connected with the front axle steering oil cylinder and driven by the front axle steering oil cylinder;
the rear axle is connected with the rear axle steering oil cylinder and driven by the rear axle steering oil cylinder;
the front axle steering oil lever and the rear axle steering oil cylinder are also connected with oil ports of the multi-mode valve;
one oil port of the steering gear is connected with the front axle steering oil cylinder, and the other oil port of the steering gear is connected with the oil port of the multi-mode valve.
Optionally, when the turning mode is switched, firstly, the electromagnet C is electrified, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, and the valve core is unlocked; and then the position of the valve core is controlled according to the power-on condition of the electromagnet A and the electromagnet B, the mode is switched, when the valve core is switched, the electromagnet C is powered off, the valve core is locked, and the steering mode switching is completed.
Optionally, when an operator presses a front axle steering button, the electromagnet A and the electromagnet B are not powered, the valve core is in a neutral state, the electromagnet C is not powered, the valve core is locked, the steering wheel is rotated, a steering gear receives a signal and transmits the signal to the front axle steering oil cylinder, and hydraulic oil enters the front axle steering oil cylinder to drive the system to complete steering.
Optionally, when the turning mode is switched, the electromagnet C is powered on, the elastic piece is retracted, the valve core is unlocked, the valve core is pushed to move towards the electromagnet B after the electromagnet a is powered on, after the valve core moves in place, the electromagnet C is automatically powered off, the elastic piece drives the electromagnet C and the valve core to be dead against, the valve core is locked, when a steering signal of a steering wheel is input to the steering gear, oil enters the front axle steering oil cylinder and the rear axle steering oil cylinder simultaneously, the moving directions of the front axle steering oil cylinder and the rear axle steering oil cylinder are opposite, and the small turning mode switching is completed.
Optionally, when the operator presses the crab walking button to perform mode conversion, the electromagnet C is powered on, the elastic piece is retracted, the valve core is unlocked, the electromagnet B is powered on to push the valve core to move towards the electromagnet a, the electromagnet C is automatically powered off after the valve core is in place, and the valve core is locked.
Compared with the prior art, the invention has the beneficial effects that:
the invention adds the electromagnet C, and the limiting groove is arranged on the valve core and used for realizing the function locking of the reversing valve, and the valve core is automatically powered off and locked after reversing is finished, thereby finishing one-time mode conversion. When an operator does not send a reversing signal, the electromagnet C locks the reversing valve in the current steering mode all the time, when an operation signal is input, the electromagnet C unlocks automatically, the valve core of the reversing valve starts reversing, and the reversing valve is locked again after reversing is finished.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural view of an automatic lock-up type multi-mode steering system according to an embodiment of the present invention;
wherein:
1-a multi-mode valve, 2-a front axle, 3-a front axle steering oil cylinder, 4-a rear axle, 5-a rear axle steering oil cylinder, 6-a steering gear, 7-an elastic part, 8-a shell, 9-a limiting groove and 10-a valve core.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
Example 1
The embodiment of the invention provides a multi-mode valve for a telescopic arm forklift, which comprises: the electromagnetic valve comprises a shell 8, and a valve core 10, an electromagnet A, an electromagnet B and an electromagnet C which are arranged in the shell 8;
two limiting grooves 9 are sequentially arranged on the side wall of the valve core 10;
the electromagnet A and the electromagnet B are respectively arranged at two ends of the valve core 10 and are used for controlling the valve core 10 to move towards the electromagnet A or the electromagnet B;
the electromagnet C is arranged on the side part of the valve core 10, is connected with the shell through an elastic piece 7, and is matched with a limiting groove on the side wall of the valve core 10 to complete locking of the valve core 10; in a specific implementation, the elastic member 7 may be a spring.
In summary, the specific working principle of the multi-mode valve 1 in the embodiment of the present invention is as follows:
when the electromagnet A and the electromagnet B are not electrified, the valve core 10 is in a neutral position state; the electromagnet C is not electrified, and the valve core 10 is locked.
When the electromagnet C is electrified, the elastic piece 7 is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core 10, and the valve core 10 is unlocked; the position of the valve core 10 is controlled according to the power-on condition of the electromagnet A and the electromagnet B, the mode is switched, and after the mode switching is completed, the electromagnet C is powered off, and the valve core 10 is locked; specifically, the method comprises the following steps:
when the electromagnet C is powered on, the elastic piece 7 is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core 10, the valve core 10 is unlocked, the electromagnet A is powered on to push the valve core 10 to move towards the electromagnet B, after the valve core 10 moves in place, the electromagnet C is automatically powered off, the elastic piece 7 pushes the electromagnet C to be combined with the limiting groove on the side wall of the valve core 10, and the valve core 10 is locked.
When the electromagnet C is powered on, the elastic piece 7 is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core 10, the valve core 10 is unlocked, the electromagnet B is powered on to push the valve core 10 to move towards the electromagnet A, after the valve core 10 is positioned, the electromagnet C is automatically powered off, the elastic piece 7 pushes the electromagnet C to be combined with the limiting groove on the side wall of the valve core 10, and the valve core 10 is locked.
Example 2
The embodiment of the invention provides an automatic locking type multi-mode steering system for a telescopic arm forklift, which comprises: a front axle 2, a front axle steering cylinder 3, a steering gear 6, a rear axle 4, a rear axle steering cylinder 5, and the multi-mode valve 1 of the first aspect;
the front axle 2 is connected with the front axle steering oil cylinder 3 and is driven by the front axle steering oil cylinder 3;
the rear axle 4 is connected with the rear axle steering oil cylinder 5 and is driven by the rear axle steering oil cylinder 5;
the front axle steering oil rod 3 and the rear axle steering oil cylinder 5 are also connected with oil ports of the multi-mode valve 1;
one oil port of the steering gear 6 is connected with the front axle steering oil cylinder 3, and the other oil port of the steering gear is connected with the oil port of the multi-mode valve 1.
The logic table of the steering system in the embodiment of the present invention is specifically referred to table 1.
TABLE 1
Figure BDA0003163915140000041
As can be seen from table 1, when the turning mode is switched, the electromagnet C is powered on, the elastic member 7 is compressed by the electromagnet C, the electromagnet C is separated from the limit groove on the side wall of the valve core 10, and the valve core 10 is unlocked; and then the position of the valve core 10 is controlled according to the power-on condition of the electromagnet A and the electromagnet B, the mode is switched, when the valve core 10 is switched, the electromagnet C is powered off, the valve core 10 is locked, and the switching of the steering mode is completed.
When an operator presses a front axle steering button, the electromagnet A and the electromagnet B are not electrified, the valve core 10 is in a neutral position state, the electromagnet C is not electrified, the valve core 10 is locked, a steering wheel is rotated, a signal received by the steering gear 6 is transmitted to the front axle steering oil cylinder 3, hydraulic oil enters the front axle steering oil cylinder 3, and a driving system finishes steering, specifically:
when the electromagnet C is electrified, the elastic piece 7 is folded, the valve core 10 is unlocked, the electromagnet A pushes the valve core 10 to move towards the electromagnet B after being electrified, after the valve core 10 moves in place, the electromagnet C is automatically powered off, the elastic piece 7 drives the electromagnet C and the valve core 10 to be deadlocked, the valve core 10 is locked, when a steering wheel steering signal is input to the steering gear 6, oil simultaneously enters the front axle steering oil cylinder 3 and the rear axle steering oil cylinder 5, the movement directions of the front axle steering oil cylinder 3 and the rear axle steering oil cylinder 5 are opposite, and small turning mode switching is completed.
When an operator presses a crab walking button to perform mode conversion, the electromagnet C is powered on, the elastic piece 7 is folded, the valve core 10 is unlocked, the electromagnet B is powered on to push the valve core 10 to move towards the electromagnet A, the electromagnet C is automatically powered off after the valve core 10 is in position, the valve core 10 is locked, when a steering wheel signal is input to the steering gear 6, the front axle steering oil cylinder 3 and the rear axle steering oil cylinder 5 simultaneously feed oil, the movement directions of the front axle steering oil cylinder 3 and the rear axle steering oil cylinder 5 are the same, and crab walking mode switching is completed.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A multi-mode valve for a telescopic boom forklift, comprising: the electromagnetic valve comprises a shell, and a valve core, an electromagnet A, an electromagnet B and an electromagnet C which are arranged in the shell;
two limiting grooves are sequentially formed in the side wall of the valve core;
the electromagnet A and the electromagnet B are respectively arranged at two ends of the valve core and are used for controlling the valve core to move towards the electromagnet A or the electromagnet B;
the electromagnet C is arranged on the side part of the valve core, is connected with the shell through an elastic piece and is matched with a limiting groove on the side wall of the valve core to complete locking of the valve core.
2. The multi-mode valve for a telescopic boom forklift truck according to claim 1, characterized in that: when the electromagnet A and the electromagnet B are not electrified, the valve core is in a neutral position state; and the electromagnet C is not electrified, and the valve core is locked.
3. The multi-mode valve for a telescopic boom forklift truck according to claim 1, characterized in that: when the electromagnet C is electrified, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, and the valve core is unlocked; and then the position of the valve core is controlled according to the power-on condition of the electromagnet A and the electromagnet B, the mode is switched, and after the mode switching is completed, the electromagnet C is powered off, and the valve core is locked.
4. The multi-mode valve for a telescopic boom forklift truck according to claim 3, characterized in that: when the electromagnet C is electrified, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, the valve core is unlocked, the electromagnet A is electrified to push the valve core to move towards the electromagnet B, after the valve core moves in place, the electromagnet C is automatically powered off, and the elastic piece pushes the electromagnet C to be combined with the limiting groove on the side wall of the valve core, so that the valve core is locked.
5. The multi-mode valve for a telescopic boom forklift truck according to claim 3, characterized in that: when the electromagnet C is electrified, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, the valve core is unlocked, the electromagnet B is electrified to push the valve core to move towards the electromagnet A, after the valve core is in place, the electromagnet C is automatically powered off, the elastic piece pushes the electromagnet C to be combined with the limiting groove on the side wall of the valve core, and the valve core is locked.
6. The utility model provides a telescopic boom fork truck is with many mode steering system of automatic locking formula which characterized in that includes: a front axle, a front axle steering cylinder, a steering gear, a rear axle steering cylinder, and the multi-mode valve of claim 1;
the front axle is connected with the front axle steering oil cylinder and driven by the front axle steering oil cylinder;
the rear axle is connected with the rear axle steering oil cylinder and driven by the rear axle steering oil cylinder;
the front axle steering oil lever and the rear axle steering oil cylinder are also connected with oil ports of the multi-mode valve;
one oil port of the steering gear is connected with the front axle steering oil cylinder, and the other oil port of the steering gear is connected with the oil port of the multi-mode valve.
7. The automatic locking type multimode steering system for a telescopic boom forklift truck according to claim 6, characterized in that: when the turning mode is switched, firstly, the electromagnet C is electrified, the elastic piece is compressed by the electromagnet C, the electromagnet C is separated from the limiting groove on the side wall of the valve core, and the valve core is unlocked; and then the position of the valve core is controlled according to the power-on condition of the electromagnet A and the electromagnet B, the mode is switched, when the valve core is switched, the electromagnet C is powered off, the valve core is locked, and the steering mode switching is completed.
8. The automatic locking type multimode steering system for a telescopic boom forklift truck according to claim 7, characterized in that: when an operator presses a front axle steering button, the electromagnet A and the electromagnet B are not powered, the valve core is in a neutral state, the electromagnet C is not powered, the valve core is locked, the steering wheel is rotated, a steering gear receives a signal and transmits the signal to the front axle steering oil cylinder, and hydraulic oil enters the front axle steering oil cylinder to drive the system to complete steering.
9. The automatic locking type multimode steering system for a telescopic boom forklift truck according to claim 7, characterized in that: when the turning mode is switched, the electromagnet C is powered on, the elastic piece is folded to unlock the valve core, the valve core is pushed to move towards the electromagnet B after the electromagnet A is powered on, the electromagnet C is automatically powered off after the valve core moves in place, the elastic piece drives the electromagnet C and the valve core to be deadlocked, the valve core is locked, when a steering wheel steering signal is input to the steering gear, oil simultaneously enters the front axle steering oil cylinder and the rear axle steering oil cylinder, the moving directions of the front axle steering oil cylinder and the rear axle steering oil cylinder are opposite, and the small turning mode switching is completed.
10. The automatic locking type multimode steering system for a telescopic boom forklift truck according to claim 7, characterized in that: when an operator presses a crab walking button to perform mode conversion, the electromagnet C is powered on, the elastic piece is folded, the valve core is unlocked, the electromagnet B is powered on to push the valve core to move towards the electromagnet A, the electromagnet C is automatically powered off after the valve core is in place, the valve core is locked, when a steering wheel signal is input to the steering gear, the front axle steering oil cylinder and the rear axle steering oil cylinder simultaneously feed oil, the movement directions of the front axle steering oil cylinder and the rear axle steering oil cylinder are the same, and crab walking mode switching is completed.
CN202110798975.3A 2021-07-15 2021-07-15 Multi-mode valve and automatic locking type multi-mode steering system for telescopic arm forklift Pending CN113460917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110798975.3A CN113460917A (en) 2021-07-15 2021-07-15 Multi-mode valve and automatic locking type multi-mode steering system for telescopic arm forklift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110798975.3A CN113460917A (en) 2021-07-15 2021-07-15 Multi-mode valve and automatic locking type multi-mode steering system for telescopic arm forklift

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CN113460917A true CN113460917A (en) 2021-10-01

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108533791A (en) * 2018-07-06 2018-09-14 佛山信卓派思机械科技有限公司 A kind of fluid-link steering mode control valve
CN108571489A (en) * 2018-07-06 2018-09-25 佛山信卓派思机械科技有限公司 A kind of hydraulic valve for Vehicular turn control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108533791A (en) * 2018-07-06 2018-09-14 佛山信卓派思机械科技有限公司 A kind of fluid-link steering mode control valve
CN108571489A (en) * 2018-07-06 2018-09-25 佛山信卓派思机械科技有限公司 A kind of hydraulic valve for Vehicular turn control

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