Special DC-D80 electromagnetic multi-way valve for tractor

Abstract

The DC-D80 electromagnetic multi-way valve special for the tractor comprises a valve body, an electromagnetic unloading valve is installed on one side of the top end of the valve body, an oil return opening is formed in the top of one side of the front face of the valve body, an overflow valve is installed on one side of the bottom end of the valve body, and an oil inlet is formed in the top of one side of the front face of the valve body. The middle of the top end of the valve body and the middle of the bottom end of the valve body are each provided with two reversing electromagnetic valves, two floating rodless cavity oil ports are formed in the bottom end of the middle of the front face of the valve body, and two floating rod cavity oil ports are formed in the top end of the middle of the front face of the valve body. According to the electromagnetic multi-way valve for the tractor, the electromagnetic unloading valve is arranged on the electromagnetic multi-way valve for the tractor, when the load change is large or the operation load is heavy, the pressure in a system can be relieved, damage or functional faults caused by overload of a hydraulic system are avoided, the floating design is adopted for an oil port, and a hydraulic cylinder can stably work under different loads.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic multiway valve, concretely to a tractor special DC -D80 electromagnetic multiway valve. BACKGROUND

[0002] The electromagnetic multiway valve is used for controlling the switching of different oil paths in the hydraulic system in the tractor, thereby realizing the accurate control of the tractor accessories, operating devices or other hydraulic elements.

[0003] However, the existing electromagnetic multiway valve for tractors has the following shortcomings:

[0004] (1) The existing electromagnetic multiway valve lacks a better unloading function, and the hydraulic system is prone to damage or functional failure due to overload.

[0005] (2) The oil port of the existing electromagnetic multiway valve lacks a floating function, and the floating of the oil causes the hydraulic cylinder to work unstably under different loads.

[0006] In view of the above, a tractor special DC-D80 electromagnetic multiway valve is proposed to solve the above problems. SUMMARY

[0007] The utility model aims at providing a tractor special DC-D80 electromagnetic multiway valve to solve the problems of the existing electromagnetic multiway valve lacking a better unloading function, the hydraulic system being prone to damage or functional failure due to overload, the oil port of the electromagnetic multiway valve lacking a floating function, and the floating of the oil causing the hydraulic cylinder to work unstably under different loads.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a tractor special DC-D80 electromagnetic multiway valve, comprising a valve body, an electromagnetic unloading valve is installed on one side of the top end of the valve body, an oil return port is installed on the top of the front side of the valve body, an overflow valve is installed on one side of the bottom end of the valve body, an oil inlet port is installed on the top of the front side of the valve body, two reversing electromagnetic valves are installed on the middle part of the top end and the middle part of the bottom end of the valve body, two floating rodless cavity oil ports are installed on the bottom end of the middle part of the front side of the valve body, and two floating rod cavity oil ports are installed on the top end of the middle part of the front side of the valve body.

[0009] When the tractor special DC-D80 electromagnetic multiway valve is used, the electromagnetic unloading valve is arranged on the electromagnetic multiway valve for tractors, which can relieve the pressure in the system when the load changes greatly or the operating load is heavy, thereby avoiding damage or functional failure of the hydraulic system due to overload, and the oil port is designed to float, so that the hydraulic cylinder can work stably under different loads.

[0010] As a preferred technical scheme of the utility model, the top of one end of the valve body is provided with a pressure gauge port. The pressure gauge port is used for connecting a pressure gauge to monitor the pressure change in the system.

[0011] As a preferred technical scheme of the utility model, the middle of one end of the valve body is provided with a bridge oil port. The bridge oil port is used for switching or transition of oil between different cavities or oil paths.

[0012] As a preferred technical scheme of the utility model, one side of the bottom end of the valve body is provided with a floating electromagnet. The floating electromagnet controls the opening and closing of the valve through electromagnetic force and is used for realizing the floating control function of the hydraulic system.

[0013] As a preferred technical scheme of the utility model, the thread specification of the oil return port is M27*2.

[0014] As a preferred technical scheme of the utility model, the thread specification of the oil inlet port is M27*2.

[0015] As a preferred technical scheme of the utility model, the thread specification of the floating rodless cavity oil port is M22*1.5.

[0016] As a preferred technical scheme of the utility model, the thread specification of the floating rod cavity oil port is M22*1.5.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The electromagnetic unloading valve is arranged on the electromagnetic multi-way valve for the tractor, so that the pressure in the system can be released when the load changes greatly or the operation load is heavy, and damage or functional failure of the hydraulic system caused by overload can be avoided.

[0019] 2. The oil port of the electromagnetic multi-way valve for the tractor is designed to be floating, so that the hydraulic cylinder can adapt to the floating of the oil when the load changes, and stable work is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a front view of the utility model;

[0021] Fig. 2 It is a back view of the utility model;

[0022] Fig. 3 It is a bottom view of the utility model.

[0023] In the drawing: 1, electromagnetic unloading valve; 2, pressure gauge port; 3, bridge oil port; 4, oil return port; 5, overflow valve; 6, oil inlet port; 7, reversing electromagnetic valve; 8, floating rodless cavity oil port; 9, floating rod cavity oil port; 10, floating electromagnet; 11, valve body. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figs. 1-3 The utility model provides a kind of DC-D80 electromagnetic multiway valve special for tractor, including valve body 11, the side of the top end of valve body 11 is equipped with electromagnetic unloading valve 1, with overpressure unloading effect, the top of the front side of valve body 11 is equipped with oil return port 4, the side of the bottom end of valve body 11 is equipped with overflow valve 5, the top of the front side of valve body 11 is equipped with oil inlet 6, for the delivery of oil, the middle of the top end and the middle of the bottom end of valve body 11 are equipped with two reversing solenoid valve 7, the bottom end of the middle of the front of valve body 11 is equipped with two floating rodless cavity oil port 8, the top of the middle of the front of valve body 11 is equipped with two floating rod cavity oil port 9, for connecting with the cavity of hydraulic cylinder.

[0026] When using, hydraulic pump delivers oil to each component in system through oil inlet 6, oil return port 4 is the interface for discharging used oil in hydraulic system, after oil passes through actuating element, it flows back to oil tank through oil return port 4 for next use or filtration, reversing solenoid valve 7 is used to control the direction of hydraulic oil flow, floating rodless cavity oil port 8 is connected to the rodless cavity of hydraulic cylinder, floating rod cavity oil port 9 is connected to the rod cavity of hydraulic cylinder, electromagnetic unloading valve 1 is used to protect hydraulic system from high pressure, overflow valve 5 is used to limit the maximum pressure of hydraulic system, to avoid system damage due to high pressure.

[0027] The top of one end of valve body 11 is equipped with pressure gauge port 2, for connecting pressure gauge, the middle of one end of valve body 11 is equipped with bridge oil port 3, the side of the bottom end of valve body 11 is equipped with floating electromagnet 10, for controlling the opening and closing of valve.

[0028] When using, bridge oil port 3 is used for switching or transition of oil between different cavities or oil paths, pressure gauge port 2 is used for connecting pressure gauge to monitor pressure change in system, floating electromagnet 10 controls the opening and closing of valve through electromagnetic force, to realize floating control function of hydraulic system.

[0029] The thread specification of oil return port 4 is M27*2, the thread specification of oil inlet 6 is M27*2, the thread specification of floating rodless cavity oil port 8 is M22*1.5, the thread specification of floating rod cavity oil port 9 is M22*1.5.

[0030] In use, the oil return port 4, the oil inlet port 6, the floating rodless cavity oil port 8 and the floating rod cavity oil port 9 are connected to the oil conveying pipeline by screwing.

[0031] In use, the DC-D80 electromagnetic multi-way valve for tractors of the utility model is used for controlling the switching of different oil paths in the hydraulic system of the tractor, the oil inlet port 6 of the electromagnetic multi-way valve for tractors is the oil inlet of the hydraulic system, the hydraulic pump delivers the oil to each component in the system through the oil inlet port 6, the oil return port 4 is the interface for discharging the used oil in the hydraulic system, after the oil passes through the actuator, the oil flows back to the oil tank through the oil return port 4 for next use or filtration, the bridge oil port 3 is used for switching or transition of the oil between different cavities or oil paths, the reversing electromagnetic valve 7 is used for controlling the direction of the hydraulic oil flow, the floating rodless cavity oil port 8 is connected to the rodless cavity of the hydraulic cylinder, the floating rod cavity oil port 9 is connected to the rod cavity of the hydraulic cylinder, the pressure gauge port 2 is used for connecting the pressure gauge to monitor the pressure change in the system, the electromagnetic unloading valve 1 is used for protecting the hydraulic system from high pressure, the overflow valve 5 is used for limiting the maximum pressure of the hydraulic system to avoid damage of the system due to high pressure, the floating electromagnet 10 controls the opening and closing of the valve through electromagnetic force to realize the floating control function of the hydraulic system.

[0032] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A DC-D80 electromagnetic multi-way valve for tractors, comprising a valve body (11), characterized by the fact that: The valve body (11) top end of one side is equipped with electromagnetic unloading valve (1), the valve body (11) front side top is equipped with oil return port (4), the valve body (11) bottom end of one side is equipped with overflow valve (5), the valve body (11) front side top is equipped with oil inlet (6), the valve body (11) top end of middle and bottom end of middle are equipped with two reversing electromagnetic valve (7), the valve body (11) front side middle bottom end is equipped with two floating rodless cavity oil port (8), the valve body (11) front side middle top end is equipped with two floating rod cavity oil port (9).

2. The DC-D80 electromagnetic multi-way valve for tractors according to claim 1, characterized in that: The valve body (11) one end top is equipped with pressure gauge port (2).

3. The DC-D80 electromagnetic multi-way valve for tractor as claimed in claim 1 wherein: The valve body (11) one end middle is equipped with bridge oil port (3).

4. The DC-D80 electromagnetic multi-way valve for tractor as claimed in claim 1 wherein: The valve body (11) bottom end of one side is equipped with floating electromagnet (10).

5. The DC-D80 electromagnetic multi-way valve for tractor as claimed in claim 1 wherein: The oil return port (4) thread specification is M27*2.

6. The DC-D80 electromagnetic multi-way valve for tractors according to claim 1, characterized in that: The oil inlet (6) thread specification is M27*2.

7. The DC-D80 electromagnetic multi-way valve for tractor as claimed in claim 1 wherein: The floating rodless cavity oil port (8) thread specification is M22*1.

5.

8. The DC-D80 electromagnetic multi-way valve for tractor according to claim 1, characterized in that: The floating rod cavity oil port (9) thread specification is M22*1.5.

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