New energy unmanned steering system

Abstract

The utility model belongs to the technical field of steering systems, and provides a new energy unmanned steering system which comprises a double pump, a priority valve, a multi-way valve, a lifting oil cylinder, a steering gear, an electric proportional valve and a steering oil cylinder. The priority valve is connected with one path of the double pump and obtains high-pressure oil from the double pump; the multi-way valve is connected with the other way of the double pump and obtains high-pressure oil from the double pump. A P1 port of the multi-way valve is connected with an EF port of the priority valve, and a T port of the multi-way valve and a T port of the priority valve are connected to the oil return filter I; the lifting oil cylinder is connected with the multi-way valve; the steering gear is connected with the priority valve; the electric proportional valve is connected with the priority valve and the steering gear; and the steering oil cylinder is connected with the electric proportional valve. An original lifting pump power takeoff is omitted, lifting and steering are combined to use the double pump, and pipeline installation is simplified; meanwhile, the electric proportional valve is added, and manual / unmanned steering operation can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned steering system technical field, concretely relates to a new energy unmanned steering system. BACKGROUND

[0002] In recent years, new energy and intelligentization of mine vehicles gradually become mainstream. Unmanned mine trucks mostly adopt new energy power systems, such as electric, hybrid, etc., to reduce fuel consumption and exhaust emission, reduce environmental pollution, realize green mine construction, and new energy mine trucks have energy recovery function, which can further improve energy utilization efficiency and reduce operating cost.

[0003] At present, the steering system can realize the line control steering through the following two ways, one is to install a motor between the steering column and the steering gear, and the upper perception controls the steering gear through the motor controller, so as to realize the front axle steering angle control. Two is to parallel a solenoid valve at the steering gear, and the upper perception system controls the solenoid valve, and the solenoid valve controls the steering oil cylinder to realize the front axle steering angle control.

[0004] For the second way of realizing line control steering, the steering system and the lifting system are relatively independent, and only share the hydraulic oil tank. When steering, the oil is based on the CF port of the priority valve to the P port of the steering gear; when lifting, the lifting pump is driven to rotate based on the power takeoff, the lifting pump sucks oil from the hydraulic oil tank to the P port of the lifting valve, and the oil passes through the lifting valve to the lifting oil cylinder to realize the lifting of the cargo box. But based on this way, the number of solenoid valves is large, resulting in complex pipeline. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model provides a new energy unmanned steering system to solve the problem of complex pipeline in the current steering control mode through solenoid valve.

[0006] The utility model provides a new energy unmanned steering system, which comprises:

[0007] A duplex pump is used to suck oil from the oil tank.

[0008] A priority valve is connected to one way of the duplex pump to obtain high-pressure oil from the duplex pump.

[0009] A multi-way valve is connected to another way of the duplex pump to obtain high-pressure oil from the duplex pump; the P1 port of the multi-way valve is connected to the EF port of the priority valve, and the T port of the multi-way valve and the T port of the priority valve are connected to the oil return filter I.

[0010] A lifting oil cylinder is connected to the multi-way valve.

[0011] A steering gear is connected to the priority valve.

[0012] An electric proportional valve is connected with the priority valve and the steering gear;

[0013] A steering cylinder is connected with the electric proportional valve.

[0014] According to the technical scheme, the new energy unmanned steering system combines steering and lifting by using a duplex pump, the high-pressure oil of the duplex pump and the high-pressure oil of the priority valve are used to realize lifting from the multi-way valve to the lifting cylinder during lifting, the high-pressure oil of the priority valve is input to the steering gear during manual steering, the high-pressure oil of the priority valve is delivered to the electric proportional valve during unmanned steering, the upper perception system controls the opening and closing of the electric proportional valve, thereby controlling the stroke and direction of the steering cylinder, the original lifting pump power take-off is cancelled, and the pipeline installation is simplified.

[0015] Optionally, a one-way valve is arranged between the P1 port of the multi-way valve and the EF port of the priority valve. The EF port of the priority valve is connected with the P1 port of the multi-way valve, and the oil liquid is prevented from flowing back.

[0016] Optionally, the LS1 port of the electric proportional valve is connected with the LS port of the priority valve, and the LS2 port of the electric proportional valve is connected with the LS port of the steering gear. The electric proportional valve realizes signal feedback among the priority valve and the steering gear through the connection with the LS ports, and ensures the normal operation of the steering system.

[0017] Optionally, the T port of the steering gear and the T port of the electric proportional valve are connected to the oil return filter II.

[0018] Optionally, a displacement sensor is arranged in the steering cylinder. The displacement sensor is arranged in the steering cylinder, and angle feedback can be realized through conversion when unmanned.

[0019] According to the technical scheme, the application has the following technical effects:

[0020] The new energy unmanned steering system combines steering and lifting by using a duplex pump, the high-pressure oil of the duplex pump and the high-pressure oil of the priority valve are used to realize lifting from the multi-way valve to the lifting cylinder during lifting, the high-pressure oil of the priority valve is input to the steering gear during manual steering, the high-pressure oil of the priority valve is delivered to the electric proportional valve during unmanned steering, the upper perception system controls the opening and closing of the electric proportional valve, thereby controlling the stroke and direction of the steering cylinder, the original lifting pump power take-off is cancelled, and the pipeline installation is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportion.

[0022] Figure 1 A schematic view of a new energy unmanned steering system is provided for the embodiments of the utility model.

[0023] Reference signs:

[0024] 1 - oil tank; 2 - duplex pump; 3 - priority valve; 4 - steering gear; 5 - electric proportional valve; 6 - steering oil cylinder; 7 - multi-way valve; 8 - lifting oil cylinder; 9 - check valve; 10 - oil return filter I; 11 - oil return filter II. DETAILED DESCRIPTION

[0025] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0027] In addition, "I", "II" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" and the like should be broadly understood, for example, it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In one embodiment, as shown in Figure 1 A new energy unmanned steering system is provided, including duplex pump 2, priority valve 3, multi-way valve 7, lifting oil cylinder 8, steering gear 4, electric proportional valve 5 and steering oil cylinder 6, duplex pump 2 is used to suck oil from oil tank 1; priority valve 3 and one way of duplex pump 2 are connected, high pressure oil is obtained from duplex pump 2; the other way of duplex pump 2 is connected with multi-way valve 7, high pressure oil is obtained from duplex pump 2; the P1 port of multi-way valve 7 and the EF port of priority valve 3 are connected, the T port of multi-way valve 7 and the T port of priority valve 3 are connected to oil return filter I 10; lifting oil cylinder 8 and multi-way valve 7 are connected; steering gear 4 and priority valve 3 are connected; electric proportional valve 5 and priority valve 3, steering gear 4 are connected; steering oil cylinder 6 and electric proportional valve 5 are connected.

[0030] Based on this, the steering and lifting are combined to use the duplex pump 2, the high pressure oil of the duplex pump 2 and the high pressure oil of the priority valve 3 are used to realize lifting from the multi-way valve 7 to the lifting oil cylinder 8 when lifting, the high pressure oil of the priority valve 3 is input to the steering gear 4 when manual steering, the high pressure oil of the priority valve 3 is delivered to the electric proportional valve 5 when unmanned steering, the upper sensing system controls the stroke and direction of the steering oil cylinder 6 by controlling the opening and closing of the electric proportional valve 5, and the original lifting pump power take-off is cancelled, and the pipeline installation is simplified.

[0031] As shown in Figure 1 The P1 port of the multi-way valve 7 and the EF port of the priority valve 3 are provided with a one-way valve 9, the EF port of the priority valve 3 and the P1 port of the multi-way valve 7 are connected, and the backflow of oil is prevented.

[0032] Specifically, the LS1 port of the electric proportional valve 5 and the LS port of the priority valve 3 are connected, and the LS2 port of the electric proportional valve 5 and the LS port of the steering gear 4 are connected. The electric proportional valve 5 realizes signal feedback among the priority valve 3, the steering gear 4 and the electric proportional valve 5 through the connection of the LS ports, and ensures the normal operation of the steering system.

[0033] Optionally, the T port of the steering gear 4 and the T port of the electric proportional valve 5 are connected to the oil return filter II 11.

[0034] Optionally, a displacement sensor is arranged in the steering oil cylinder 6. Through the built-in oil cylinder displacement sensor in the steering oil cylinder 6, angle feedback can be realized through conversion when unmanned.

[0035] Based on the new energy unmanned steering system provided in the embodiment, the specific working process is as follows:

[0036] The duplex pump 2 sucks oil from the oil tank 1, and the duplex pump 2 outputs high pressure oil to the priority valve 3 and the multi-way valve 7.

[0037] When not steering and not lifting, the high pressure oil of the duplex pump 2 and the high pressure oil of the priority valve 3 are returned to the oil tank from the multi-way valve 7 through the oil return filter I 10.

[0038] When lifting, the high pressure oil of the duplex pump 2 and the high pressure oil of the priority valve 3 are used to realize lifting from the multi-way valve 7 to the lifting oil cylinder 8.

[0039] When manual steering, the high pressure oil of the priority valve 3 is input to the steering gear 4, the steering gear 4 outputs high pressure oil to the electric proportional valve 5 to the steering oil cylinder 6 to realize steering action. When unmanned, the high pressure oil of the priority valve 3 is delivered to the electric proportional valve 5, and the upper sensing system controls the stroke and direction of the steering oil cylinder 6 by controlling the opening and closing of the electric proportional valve 5; at the same time, the steering oil cylinder 6 realizes angle feedback through the built-in displacement sensor after conversion.

[0040] Based on this, the turning and lifting are combined to use a duplex pump, the high-pressure oil of the duplex pump and the high-pressure oil of the priority valve are used to realize lifting from the multi-way valve to the lifting oil cylinder during lifting, the high-pressure oil of the priority valve is input to the steering gear during manual steering, the high-pressure oil of the priority valve is delivered to the electric proportional valve during unmanned steering, the upper sensing system controls the opening and closing of the electric proportional valve, thereby controlling the stroke and direction of the steering oil cylinder, and the original lifting pump power take-off is cancelled, and the pipeline installation is simplified.

[0041] In the description of the present application, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present description.

[0042] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the present description and the features of the different embodiments or examples, without contradiction.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and description of the present application.

Claims

1. A new energy unmanned steering system, characterized in that, Comprise: a duplex pump for sucking oil from an oil tank; a priority valve connected with one way of the duplex pump for obtaining high pressure oil from the duplex pump; a multi-way valve connected with another way of the duplex pump for obtaining high pressure oil from the duplex pump; a P1 port of the multi-way valve is connected with an EF port of the priority valve; a T port of the multi-way valve is connected with a T port of the priority valve to an oil return filter I; a lifting oil cylinder connected with the multi-way valve; a diverter connected with the priority valve; an electric proportional valve connected with the priority valve and the diverter; a steering oil cylinder connected with the electric proportional valve.

2. The new energy unmanned steering system according to claim 1, characterized in that, A one-way valve is arranged between the P1 port of the multi-way valve and the EF port of the priority valve.

3. The new energy unmanned steering system according to claim 1, characterized in that, An LS1 port of the electric proportional valve is connected with an LS port of the priority valve; an LS2 port of the electric proportional valve is connected with an LS port of the diverter.

4. The new energy unmanned steering system according to claim 3, characterized in that, A T port of the diverter is connected with a T port of the electric proportional valve to an oil return filter II.

5. The new energy unmanned steering system according to claim 3, characterized in that, A displacement sensor is arranged in the steering oil cylinder.

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