CN201685704U - A hydraulic device for an electric forklift matched with a single power source - Google Patents

A hydraulic device for an electric forklift matched with a single power source Download PDF

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CN201685704U
CN201685704U CN201020159576XU CN201020159576U CN201685704U CN 201685704 U CN201685704 U CN 201685704U CN 201020159576X U CN201020159576X U CN 201020159576XU CN 201020159576 U CN201020159576 U CN 201020159576U CN 201685704 U CN201685704 U CN 201685704U
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oil
valve
lifting
oil supply
tilting
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高洪
赵雪松
李震
王建彬
肖平
贾文友
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Anhui Polytechnic University
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Anhui University of Science and Technology
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Abstract

本实用新型涉及一种与单动力源方案配套的电动叉车液压装置。该装置包括动力机构、优先分流机构、转向机构、多路阀、驱动行走机构、升降机构、倾斜机构和油箱；动力机构由串联的电动机、减速器和齿轮泵组成；优先分流机构由分流阀组成；多路阀由串联在主供油油路上的三个三位六通电磁阀组成，所述三个三位六通电磁阀分别为行走阀、起升阀和倾斜阀；行走阀连通着液压马达构成驱动行走机构；起升阀连通着升降油缸构成升降机构；倾斜阀连通着倾斜油缸构成倾斜机构。本实用新型采用单电机实现对电动叉车的倾斜和起升、转向和驱动行走等多路液压控制；其结构简单，工作可靠性高，生产成本低。

Figure 201020159576

The utility model relates to an electric forklift hydraulic device matched with a single power source scheme. The device includes a power mechanism, a priority flow distribution mechanism, a steering mechanism, a multi-way valve, a driving mechanism, a lifting mechanism, a tilting mechanism and a fuel tank; the power mechanism is composed of a series motor, a reducer and a gear pump; the priority flow separation mechanism is composed of a flow diversion valve ; The multi-way valve is composed of three three-position six-way solenoid valves connected in series on the main oil supply circuit. The three three-position six-way solenoid valves are travel valves, lifting valves and tilt valves respectively; The motor constitutes the driving mechanism; the lifting valve is connected with the lifting cylinder to form the lifting mechanism; the tilting valve is connected with the tilting cylinder to form the tilting mechanism. The utility model adopts a single motor to realize multi-channel hydraulic control of the electric forklift such as tilting, lifting, steering and driving; the utility model has the advantages of simple structure, high working reliability and low production cost.

Figure 201020159576

Description

一种与单动力源配套的电动叉车液压装置 A hydraulic device for an electric forklift matched with a single power source

技术领域technical field

本实用新型属于叉车用液压装置，具体涉及一种与单动力源配套的电动叉车液压装置。The utility model belongs to a hydraulic device for a forklift, in particular to an electric forklift hydraulic device matched with a single power source.

背景技术Background technique

目前市场上普遍使用的叉车均采用了多电动机或多动力源，如起升、倾斜与转向使用一个电动机(或原动机)，驱动行走又采用一个电动机(或原动机)等等。多动力源方案虽然简单实用，但不便于控制系统的集成。而在电动叉车设计中，单电动机设计方案，则是代表未来技术发展方向的、多种高新技术有机集成的、具有极高技术附加值的新型设计，显然能提高该类产品核心竞争力。The forklifts commonly used in the market currently use multiple motors or multiple power sources, such as lifting, tilting and steering using one motor (or prime mover), driving and walking using another motor (or prime mover) and so on. Although the multi-power source scheme is simple and practical, it is not easy to integrate the control system. In the design of electric forklifts, the single-motor design scheme is a new design that represents the direction of future technological development, organically integrates a variety of high-tech, and has extremely high technological added value, which can obviously improve the core competitiveness of this type of product.

电动叉车设计中，单电动机设计方案的要点是：仅采用一个电动机，给门架倾斜与起升、驱动行走、助力转向等系统提供动力源。门架倾斜与起升、助力转向均采用液压传动技术，驱动行走则采用机械与液压传动一体化技术。由起升油缸和倾斜油缸组成门架倾斜升降执行装置；由转向主销、转向节和转向油缸组成的转向装置；由液压马达以及设置在液压马达上的液压马达制动器和液压马达调速阀、离合器、减速器和差速器组成的行走驱动和传动装置。通过单电机驱动单泵供油和设计分路输出的液压系统，实现对电动叉车的倾斜和起升、转向及驱动行走等多路的液压控制。In the design of electric forklifts, the main points of the single motor design scheme are: only one motor is used to provide power sources for systems such as mast tilting and lifting, driving walking, and power steering. The tilting and lifting of the mast and the power steering all adopt hydraulic transmission technology, and the drive travel adopts the integrated technology of mechanical and hydraulic transmission. The mast tilting lifting actuator is composed of a lifting cylinder and a tilting cylinder; the steering device is composed of a steering kingpin, a steering knuckle and a steering cylinder; a hydraulic motor, a hydraulic motor brake and a hydraulic motor speed regulating valve set on the hydraulic motor, Travel drive and transmission device composed of clutch, reducer and differential. Through a single motor driving a single pump for oil supply and designing a hydraulic system with split output, it realizes multi-channel hydraulic control of electric forklifts such as tilting, lifting, steering, and driving.

本实用新型提供了一种与上述“单电动机(或单动力源)设计方案”完全配套的电动叉车液压装置，合理的集成了处于机械工程学科前沿的机电液一体化技术，可实现转向、驱动行走、倾斜和起升的集成控制，而且结构简单，可靠性高。The utility model provides an electric forklift hydraulic device completely matched with the above-mentioned "single motor (or single power source) design scheme", which rationally integrates the mechanical-electrical-hydraulic integration technology at the forefront of mechanical engineering disciplines, and can realize steering, driving Integrated control of walking, tilting and lifting, simple structure and high reliability.

实用新型内容Utility model content

为了克服电动叉车中，多动力源方案不便于控制系统集成的弱点，本实用新型提供了一种与单动力源配套的电动叉车液压装置。In order to overcome the disadvantage that the multi-power source scheme is not convenient for control system integration in electric forklifts, the utility model provides a hydraulic device for electric forklifts matched with a single power source.

该液压装置的技术要点是“单泵供油，分路输出和液压马达衔接机械行走”，即，将实现“倾斜和起升以及转向”功能的液压泵、实现“驱动行走”功能的液压泵集成为一个由单电动机提供动力的液压泵，采用多路阀将压力油分路输出，采用液压马达作为通常的机械驱动行走装置的输入元件，实现液压系统与机械系统的有机衔接。The technical point of the hydraulic device is "single pump oil supply, split output and hydraulic motor connected with mechanical walking", that is, the hydraulic pump that will realize the functions of "tilting, lifting and steering" and the hydraulic pump that will realize the function of "driving walking" It is integrated into a hydraulic pump powered by a single motor, using multi-way valves to split the output of pressure oil, and using hydraulic motors as the input elements of the usual mechanically driven traveling devices to realize the organic connection between the hydraulic system and the mechanical system.

本实用新型的具体结构设计方案如下：Concrete structural design scheme of the present utility model is as follows:

一种与单动力源配套的电动叉车液压装置包括动力机构、优先分流机构、转向机构、多路阀、驱动行走机构、升降机构、倾斜机构和油箱；An electric forklift hydraulic device matched with a single power source includes a power mechanism, a priority flow distribution mechanism, a steering mechanism, a multi-way valve, a driving travel mechanism, a lifting mechanism, a tilting mechanism and an oil tank;

所述动力机构由串联的电动机13、减速器12和齿轮泵11组成，齿轮泵11的进油口连通着油箱，油箱另一侧连通着回油管路；The power mechanism is composed of an electric motor 13 connected in series, a reducer 12 and a gear pump 11, the oil inlet of the gear pump 11 is connected to the oil tank, and the other side of the oil tank is connected to the oil return pipeline;

所述优先分流机构由分流阀10组成，分流阀10的进油口连通着齿轮泵11的出油口，分流阀10的右出油口连通着主供油油路16A；分流阀10的左出油口连通着液压转向器15；Described priority diversion mechanism is made up of diverter valve 10, and the oil inlet port of diverter valve 10 is communicated with the oil outlet of gear pump 11, and the right oil outlet of diverter valve 10 is communicated with main oil supply oil circuit 16A; The oil outlet is connected to the hydraulic steering gear 15;

所述多路阀由串联在主供油油路16A上的三个三位六通电磁阀组成，所述三个三位六通电磁阀分别为行走阀7、起升阀5和倾斜阀2；所述行走阀7、起升阀5和倾斜阀2的回油口分别经回油管路连通着油箱；The multi-way valve is composed of three three-position six-way solenoid valves connected in series on the main oil supply circuit 16A, and the three three-position six-way solenoid valves are travel valve 7, lift valve 5 and tilt valve 2 respectively. ; The oil return ports of the travel valve 7, the lift valve 5 and the tilt valve 2 are respectively connected to the oil tank through the oil return pipeline;

行走阀7的进油口通过第一分路供油油路16B连通着主供油油路16A，其另两个出油口分别连通着液压马达6，构成驱动行走机构；The oil inlet of the travel valve 7 is connected to the main oil supply oil circuit 16A through the first branch oil supply oil circuit 16B, and the other two oil outlets are respectively connected to the hydraulic motor 6 to form a driving traveling mechanism;

起升阀5的进油口通过第二分路供油油路16C连通着主供油油路16A，其另一出油口通过限速阀4连通着升降油缸3的下腔，升降油缸3的上腔连通着回油管路，构成升降机构；The oil inlet of the lifting valve 5 is connected to the main oil supply oil circuit 16A through the second branch oil supply oil circuit 16C, and the other oil outlet is connected to the lower cavity of the lifting cylinder 3 through the speed limiting valve 4, and the lifting cylinder 3 The upper cavity is connected with the oil return pipeline, which constitutes the lifting mechanism;

倾斜阀2的进油口通过第三分路供油油路16D连通着主供油油路16A，其另两个出油口分别连通着倾斜油缸1的左右腔，构成倾斜机构；The oil inlet of the tilt valve 2 is connected to the main oil supply circuit 16A through the third branch oil supply circuit 16D, and the other two oil outlets are respectively connected to the left and right chambers of the tilt cylinder 1 to form a tilt mechanism;

所述转向机构由并联的液压转向器15和转向油缸14组成，液压转向器15的另两个接口分别连通着回油管路和分流阀10的左出油口。The steering mechanism is composed of a parallel hydraulic steering gear 15 and a steering cylinder 14, and the other two ports of the hydraulic steering gear 15 are respectively connected with the oil return pipeline and the left oil outlet of the diverter valve 10.

主供油油路16A和回油管路之间并联着减压阀9和安全阀8。A pressure reducing valve 9 and a safety valve 8 are connected in parallel between the main oil supply oil line 16A and the oil return line.

与现有技术相比本实用新型的有益技术效果体现在以下方面：Compared with the prior art, the beneficial technical effect of the utility model is embodied in the following aspects:

(1)与“单电动机设计方案”完全配套，便于控制系统集成，可靠性高。(1) It is fully matched with the "single motor design scheme", which is convenient for control system integration and has high reliability.

(2)将实现“倾斜和起升以及转向”功能的液压泵、实现“驱动行走”功能的液压泵集成为一个由电动机提供动力的液压泵，减少了电动机，提高了系统的可靠性，降低了成本。(2) The hydraulic pump that realizes the function of "tilting, lifting and steering" and the hydraulic pump that realizes the function of "driving walking" are integrated into a hydraulic pump powered by an electric motor, which reduces the number of electric motors, improves the reliability of the system, and reduces the costs.

(3)采用液压马达作为通常的机械驱动行走装置的输入元件，实现液压系统与机械系统的有机衔接，提高了产品的技术附加值。(3) The hydraulic motor is used as the input element of the usual mechanically driven traveling device to realize the organic connection between the hydraulic system and the mechanical system and improve the technical added value of the product.

附图说明Description of drawings

图1为本实用新型的液压系统图。Fig. 1 is a hydraulic system diagram of the utility model.

具体实施方式Detailed ways

下面结合附图，通过实施例对本实用新型作进一步地说明。Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

实施例：Example:

参见图1，一种与单动力源配套的电动叉车液压装置包括动力机构、优先分流机构、转向机构、多路阀、驱动行走机构、升降机构、倾斜机构和油箱。Referring to Fig. 1, an electric forklift hydraulic device matched with a single power source includes a power mechanism, a priority flow distribution mechanism, a steering mechanism, a multi-way valve, a driving mechanism, a lifting mechanism, a tilting mechanism and a fuel tank.

动力机构由串联的电动机13、减速器12和齿轮泵11组成，齿轮泵11的进油口连通着油箱，油箱另一侧连通着回油管路；The power mechanism is composed of a motor 13 connected in series, a reducer 12 and a gear pump 11. The oil inlet of the gear pump 11 is connected to the oil tank, and the other side of the oil tank is connected to the oil return pipeline;

优先分流机构由分流阀10组成，分流阀10的进油口连通着齿轮泵11的出油口，分流阀10的右出油口连通着主供油油路16A；分流阀10的左出油口连通着液压转向器15。The priority diversion mechanism is composed of a diverter valve 10, the oil inlet of the diverter valve 10 is connected to the oil outlet of the gear pump 11, and the right oil outlet of the diverter valve 10 is connected to the main oil supply oil circuit 16A; the left oil outlet of the diverter valve 10 The port is connected to the hydraulic steering gear 15.

多路阀16由串联在主供油油路16A上的三个三位六通电磁阀组成，三个三位六通电磁阀分别为行走阀7、起升阀5和倾斜阀2；行走阀7、起升阀5和倾斜阀2的回油口分别经回油管路连通着油箱；The multi-way valve 16 is composed of three three-position six-way solenoid valves connected in series on the main oil supply circuit 16A, the three three-position six-way solenoid valves are travel valve 7, lift valve 5 and tilt valve 2 respectively; travel valve 7. The oil return ports of lift valve 5 and tilt valve 2 are respectively connected to the oil tank through the oil return pipeline;

行走阀7的进油口通过第一分路供油油路16B连通着主供油油路16A，其另两个出油口分别连通着液压马达6，构成驱动行走机构；The oil inlet of the travel valve 7 is connected to the main oil supply oil circuit 16A through the first branch oil supply oil circuit 16B, and the other two oil outlets are respectively connected to the hydraulic motor 6 to form a driving traveling mechanism;

起升阀5的进油口通过第二分路供油油路16C连通着主供油油路16A，其另一出油口通过限速阀4连通着升降油缸3的下腔，升降油缸3的上腔连通着回油管路，构成升降机构；The oil inlet of the lifting valve 5 is connected to the main oil supply oil circuit 16A through the second branch oil supply oil circuit 16C, and the other oil outlet is connected to the lower cavity of the lifting cylinder 3 through the speed limiting valve 4, and the lifting cylinder 3 The upper cavity is connected with the oil return pipeline, which constitutes the lifting mechanism;

倾斜阀2的进油口通过第三分路供油油路16D连通着主供油油路16A，其另两个出油口分别连通着倾斜油缸1的左右腔，构成倾斜机构；The oil inlet of the tilt valve 2 is connected to the main oil supply circuit 16A through the third branch oil supply circuit 16D, and the other two oil outlets are respectively connected to the left and right chambers of the tilt cylinder 1 to form a tilt mechanism;

转向机构由并联的液压转向器15和转向油缸14组成，液压转向器15的另两个接口分别连通着回油管路和分流阀10的左出油口。The steering mechanism is composed of a parallel hydraulic steering gear 15 and a steering cylinder 14, and the other two ports of the hydraulic steering gear 15 are respectively connected with the oil return pipeline and the left oil outlet of the diverter valve 10.

在主供油油路16A与通油箱的回油管路之间并联了减压阀9和安全阀8。A pressure reducing valve 9 and a safety valve 8 are connected in parallel between the main oil supply oil circuit 16A and the oil return line leading to the oil tank.

当主供油油路16A与同时处于中位的行走阀7、起升阀5和倾斜阀2相通时形成回油。Oil return is formed when the main oil supply oil passage 16A communicates with the travel valve 7, lift valve 5 and tilt valve 2 which are in the neutral position at the same time.

使用时，电动机13经减速器12减速后带动齿轮泵11运动，将油液从油箱吸出，通过油管压入分流阀10后分成两路：一路优先向液压转向器15，供给转向油缸14，保证转向需要。另一路经主供油油路16A、第一分路供油油路16B、第二分路供油油路16C和第三分路供油油路16D相通，行走阀7和倾斜阀2分别控制液压马达6和倾斜油缸1的动作，与之连接的两个溢流单向阀组分别控制液压马达6两个油口的压力和倾斜油缸1两个油口的压力，并起缓冲补油的作用。起升阀5的一个出油口常闭，另一个油口通过限速阀4连接到升降油缸3，升降油缸3的出油口直接与油箱相通，溢流单向阀和限速阀4控制升降油缸3的供油压力，安全阀8的设置既可满足车辆爬坡的压力要求，又限制系统最大压力，起安全保护作用。减压阀9的出口压力为一定值时，以出油口输出的压力油供低压辅助控制动作。When in use, the motor 13 drives the gear pump 11 to move after being decelerated by the reducer 12, sucks the oil out of the fuel tank, presses it into the diverter valve 10 through the oil pipe, and then divides it into two paths: one path is preferentially supplied to the hydraulic steering gear 15 and supplied to the steering cylinder 14 to ensure Steering takes. The other road communicates with the main oil supply circuit 16A, the first branch oil supply circuit 16B, the second branch oil supply circuit 16C and the third branch oil supply circuit 16D, and the travel valve 7 and the tilt valve 2 are respectively controlled The action of the hydraulic motor 6 and the tilting cylinder 1, and the two overflow check valve groups connected to it respectively control the pressure of the two oil ports of the hydraulic motor 6 and the pressure of the two oil ports of the tilting cylinder 1, and play a role of buffering and replenishing oil. effect. One oil outlet of the lifting valve 5 is normally closed, and the other oil port is connected to the lifting cylinder 3 through the speed limiting valve 4. The oil outlet of the lifting cylinder 3 is directly connected to the fuel tank, and the overflow check valve and the speed limiting valve 4 control The oil supply pressure of the lift cylinder 3 and the setting of the safety valve 8 can not only meet the pressure requirement of the vehicle climbing, but also limit the maximum pressure of the system to play a role of safety protection. When the outlet pressure of the pressure reducing valve 9 is a certain value, the pressure oil output from the oil outlet is used for low pressure auxiliary control action.

Claims (2)

1.一种与单动力源配套的电动叉车液压装置，其特征在于：包括动力机构、优先分流机构、转向机构、多路阀、驱动行走机构、升降机构、倾斜机构和油箱；1. An electric forklift hydraulic device matched with a single power source, characterized in that it includes a power mechanism, a priority flow distribution mechanism, a steering mechanism, a multi-way valve, a driving travel mechanism, a lifting mechanism, a tilting mechanism and a fuel tank; 所述动力机构由串联的电动机(13)、减速器(12)和齿轮泵(11)组成，齿轮泵(11)的进油口连通着油箱，油箱另一侧连通着回油管路；The power mechanism is composed of an electric motor (13), a speed reducer (12) and a gear pump (11) connected in series, the oil inlet of the gear pump (11) is connected to the fuel tank, and the other side of the fuel tank is connected to the oil return pipeline; 所述优先分流机构由分流阀(10)组成，分流阀(10)的进油口连通着齿轮泵(11)的出油口，分流阀(10)的右出油口连通着主供油油路(16A)；分流阀(10)的左出油口连通着液压转向器(15)；The priority diversion mechanism is composed of a diverter valve (10), the oil inlet of the diverter valve (10) is connected to the oil outlet of the gear pump (11), and the right oil outlet of the diverter valve (10) is connected to the main oil supply Road (16A); the left oil outlet of diverter valve (10) is connected with hydraulic steering gear (15); 所述多路阀由串联在主供油油路(16A)上的三个三位六通电磁阀组成，所述三个三位六通电磁阀分别为行走阀(7)、起升阀(5)和倾斜阀(2)；所述行走阀(7)、起升阀(5)和倾斜阀(2)的回油口分别经回油管路连通着油箱；The multi-way valve is composed of three three-position six-way solenoid valves connected in series on the main oil supply circuit (16A), and the three three-position six-way solenoid valves are travel valve (7), lift valve ( 5) and the tilt valve (2); the oil return ports of the travel valve (7), lift valve (5) and tilt valve (2) are respectively connected to the oil tank through the oil return pipeline; 行走阀(7)的进油口通过第一分路供油油路(16B)连通着主供油油路(16A)，其另两个出油口分别连通着液压马达(6)，构成驱动行走机构；The oil inlet of the travel valve (7) is connected to the main oil supply oil circuit (16A) through the first branch oil supply oil circuit (16B), and the other two oil outlets are respectively connected to the hydraulic motor (6), forming a drive walking mechanism; 起升阀(5)的进油口通过第二分路供油油路(16C)连通着主供油油路(16A)，其另一出油口通过限速阀(4)连通着升降油缸(3)的下腔，升降油缸(3)的上腔连通着回油管路，构成升降机构；The oil inlet port of the lift valve (5) is connected to the main oil supply circuit (16A) through the second branch oil supply circuit (16C), and the other oil outlet is connected to the lift cylinder through the speed limiting valve (4) The lower chamber of (3) and the upper chamber of the lifting oil cylinder (3) are connected with the oil return pipeline to form a lifting mechanism; 倾斜阀(2)的进油口通过第三分路供油油路(16D)连通着主供油油路(16A)，其另两个出油口分别连通着倾斜油缸(1)的左右腔，构成倾斜机构；The oil inlet of the tilt valve (2) is connected to the main oil supply circuit (16A) through the third branch oil supply circuit (16D), and the other two oil outlets are respectively connected to the left and right chambers of the tilt cylinder (1) , forming a tilting mechanism; 所述转向机构由并联的液压转向器(15)和转向油缸(14)组成，液压转向器(15)的另两个接口分别连通着回油管路和分流阀(10)的左出油口。The steering mechanism is composed of a parallel hydraulic steering gear (15) and a steering cylinder (14), and the other two ports of the hydraulic steering gear (15) are respectively connected with the oil return line and the left oil outlet of the diverter valve (10). 2.根据权利要求1所述的一种与单动力源配套的电动叉车液压装置，其特征在于：主供油油路(16A)和回油管路之间并联着减压阀(9)和安全阀(8)。 2. An electric forklift hydraulic device matched with a single power source according to claim 1, characterized in that: a pressure reducing valve (9) and a safety valve are connected in parallel between the main oil supply oil line (16A) and the oil return line. valve (8). the
CN201020159576XU 2010-04-14 2010-04-14 A hydraulic device for an electric forklift matched with a single power source Expired - Fee Related CN201685704U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
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CN102120447A (en) * 2011-03-04 2011-07-13 安徽合力股份有限公司 Forklift hydraulic system matched with multi-functional wet brakes
CN105329314A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Storage battery electric forklift integrating hydraulic pump and steering pump
CN105329817A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Single-pump hydraulic system used for forklift
CN105437964A (en) * 2015-11-23 2016-03-30 山东力士泰装备制造有限公司 Hydrostatic four-wheel drive system for trackless rubber-tyred command vehicle
CN106168237A (en) * 2016-09-14 2016-11-30 河南瑞创通用机械制造有限公司 A kind of tractor hydraulic system assembly
CN106515419A (en) * 2016-12-21 2017-03-22 景德镇陶瓷大学 Oil-electric hybrid forklift
CN106629487A (en) * 2016-12-21 2017-05-10 景德镇陶瓷大学 Forklift
CN105370650B (en) * 2015-11-26 2017-06-16 广西柳工机械股份有限公司 Shunting pressure-gradient control valve
CN108502816A (en) * 2018-05-08 2018-09-07 安徽合力股份有限公司 Bypass type energy regeneration forklift hydraulic system
CN109231091A (en) * 2018-09-28 2019-01-18 国家电网公司 A kind of cable maintenance lift truck
CN113086898A (en) * 2021-04-13 2021-07-09 安徽皖南新维电机有限公司 Walking and lifting two-in-one composite motor for oil-to-electricity forklift
CN115681232A (en) * 2022-11-04 2023-02-03 阿特拉斯叉车(杭州)有限公司 Hydraulic system and four-way forklift with same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102120447A (en) * 2011-03-04 2011-07-13 安徽合力股份有限公司 Forklift hydraulic system matched with multi-functional wet brakes
CN105437964A (en) * 2015-11-23 2016-03-30 山东力士泰装备制造有限公司 Hydrostatic four-wheel drive system for trackless rubber-tyred command vehicle
CN105370650B (en) * 2015-11-26 2017-06-16 广西柳工机械股份有限公司 Shunting pressure-gradient control valve
CN105329314A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Storage battery electric forklift integrating hydraulic pump and steering pump
CN105329817A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Single-pump hydraulic system used for forklift
CN105329817B (en) * 2015-12-04 2018-08-17 安徽合叉叉车有限公司 A kind of single pump hydraulic system of fork truck
CN106168237B (en) * 2016-09-14 2018-06-12 河南瑞创通用机械制造有限公司 A kind of tractor hydraulic system assembly
CN106168237A (en) * 2016-09-14 2016-11-30 河南瑞创通用机械制造有限公司 A kind of tractor hydraulic system assembly
CN106629487A (en) * 2016-12-21 2017-05-10 景德镇陶瓷大学 Forklift
CN106515419A (en) * 2016-12-21 2017-03-22 景德镇陶瓷大学 Oil-electric hybrid forklift
CN108502816A (en) * 2018-05-08 2018-09-07 安徽合力股份有限公司 Bypass type energy regeneration forklift hydraulic system
CN108502816B (en) * 2018-05-08 2023-07-14 安徽合力股份有限公司 Bypass type energy regeneration forklift hydraulic system
CN109231091A (en) * 2018-09-28 2019-01-18 国家电网公司 A kind of cable maintenance lift truck
CN113086898A (en) * 2021-04-13 2021-07-09 安徽皖南新维电机有限公司 Walking and lifting two-in-one composite motor for oil-to-electricity forklift
CN115681232A (en) * 2022-11-04 2023-02-03 阿特拉斯叉车(杭州)有限公司 Hydraulic system and four-way forklift with same
CN115681232B (en) * 2022-11-04 2023-09-01 阿特拉斯叉车(杭州)有限公司 Hydraulic system and four-way forklift with same

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