Forklift control inching valve group

Abstract

The utility model discloses a forklift control inching valve group which comprises a valve body, a heat conduction cover and a fixing cap, an electromagnetic assembly is installed on the side face of the valve body, the electromagnetic assembly controls reversing of the valve body, the heat conduction cover is connected with a diffusion cover, the heat conduction cover and the diffusion cover are arranged outside the electromagnetic assembly in a sleeved mode, and the heat conduction cover and the diffusion cover are provided with containing cavities which are communicated with each other. The containing cavity is communicated with the valve body, the fixing cap is connected with the electromagnetic assembly, the electromagnetic assembly is provided with a power connection head, and the power connection head blocks the heat conduction cover. Hydraulic oil is fed into the input port and then flows to the valve body in the containing cavity, heat generated by working of the coil passes through the heat conduction layer to the heat conduction cover and the diffusion cover, the hydraulic oil flows to take away the heat from the heat conduction layer to the heat conduction cover, the hydraulic oil is used for dissipating heat of the coil, the high-temperature phenomenon of the coil is effectively reduced, the working stability of the inching valve set is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic directional valve technology, specifically a micro-motion valve assembly for forklift operation. Background Technology

[0002] Micro-motion solenoid valve assemblies are a common component of hydraulic forklifts, controlling the flow direction and volume of hydraulic oil to achieve actions such as lifting, tilting, and forward / backward movement of the forklift. By combining and controlling multiple solenoid valves, various attachment actions can be achieved.

[0003] In related technologies, a search revealed a solution for a multi-functional solenoid valve assembly (announcement number CN218810197U) for telescopic forklifts. This solution uses a threaded cartridge-type priority valve, which integrates the priority valve, brake directional solenoid valve, and shift solenoid valve onto the same valve block. It also features a first oil inlet, a second oil inlet, and a third oil inlet that are respectively connected to the priority valve, the brake directional solenoid valve, and the shift solenoid valve.

[0004] However, the solenoid valve assembly used in the above scheme generates heat when the electromagnet converts electrical energy into magnetic force. Most commonly used solenoid valve assemblies use passive cooling. During continuous operation, the temperature of the solenoid valve assembly decreases slowly, causing the temperature of the electromagnet to rise, which will affect the working efficiency and lifespan of the solenoid valve. Utility Model Content

[0005] The purpose of this invention is to provide a forklift control micro-motion valve assembly to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a forklift-operated micro-motion valve assembly, including a valve body, wherein an electromagnetic component is installed on the side of the valve body, and the electromagnetic component controls the switching of the valve body;

[0007] A heat-conducting cover is connected to a diffusion cover. The heat-conducting cover and the diffusion cover are fitted over the outside of the electromagnetic component. The heat-conducting cover and the diffusion cover are provided with interconnected receiving cavities. The receiving cavities are connected to the valve body. Hydraulic oil flows through the receiving cavities to dissipate heat from the heat-conducting cover and the diffusion cover. The heat-conducting cover and the diffusion cover conduct heat to the electromagnetic component, resulting in good heat conduction effect on the electromagnetic component.

[0008] A fixing cap is provided, which is connected to the electromagnetic component. The electromagnetic component is equipped with a contact head, which blocks the heat-conducting cover to ensure the stable installation of the electromagnetic component, the heat-conducting cover, and the diffusion cover.

[0009] Furthermore, the valve body is connected to an oil inlet, an oil return port, and two working ports. The heat-conducting cover and the diffuser cover are respectively connected to an input port and an output port. The output port is connected to the oil inlet port through a transfer pipe. The hydraulic oil flows in the heat-conducting cover and the diffuser cover through the input port and the output port, and the hydraulic oil conducts heat to the electromagnetic component to prevent the electromagnetic component from overheating.

[0010] Furthermore, the electromagnetic component includes a coil and an iron core. The iron core is connected to the valve body, and the two ends of the iron core are provided with threaded portions. The iron core is screwed to the valve body through the threaded portions, and the fixing cap is screwed to the threaded portions, which is convenient for installation. The iron core conducts heat to the heat conduction cover and the diffusion cover.

[0011] Furthermore, both the heat-conducting cover and the diffusion cover are provided with heat-conducting strips, which can improve the passive heat dissipation efficiency of the heat-conducting cover and the diffusion cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are: after the hydraulic oil is fed into the input port, it flows to the valve body in the receiving cavity. The heat generated by the coil operation is conducted to the heat shield and the diffuser through the heat-conducting layer. The flow of hydraulic oil carries away the heat from the heat-conducting layer to the heat shield. The hydraulic oil is used to dissipate heat from the coil, effectively reducing the phenomenon of high coil temperature, ensuring the working stability of the micro-motion valve assembly and extending its service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the entire utility model;

[0014] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the connection between the heat-conducting cover and the coil of this utility model;

[0016] Figure 4 This is a front view of the diffusion hood of this utility model.

[0017] In the diagram: 1. Valve body; 2. Oil return port; 3. Oil inlet; 4. Working port; 5. Adaptor pipe; 6. Heat-conducting cover; 7. Heat-conducting strip; 8. Input port; 9. Output port; 10. Coil; 11. Fixing cap; 12. Diffuser cover; 13. Iron core; 14. Threaded part; 15. Heat-conducting layer; 16. Receiving cavity; 17. Electrical connector. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example:

[0020] Please see Figure 1-4 This utility model provides a technical solution: a forklift-operated micro-motion valve assembly, including a valve body 1, wherein an electromagnetic component is installed on the side of the valve body 1, and the electromagnetic component controls the reversing of the valve body 1;

[0021] A heat-conducting cover 6 is connected to a diffusion cover 12. The heat-conducting cover 6 and the diffusion cover 12 are fitted around the outside of the electromagnetic component. The heat-conducting cover 6 and the diffusion cover 12 are provided with interconnected receiving cavities 16. The receiving cavity 16 is connected to the valve body 1. Hydraulic oil first flows from the receiving cavity 16 and then flows into the valve body 1. The hydraulic oil is used to dissipate heat from the electromagnetic component, thus solving the problem of high temperature of the electromagnetic component.

[0022] A fixing cap 11 is connected to an electromagnetic component. The electromagnetic component is provided with a power connector 17, which blocks the heat-conducting cover 6 to ensure that the heat-conducting cover 6 will not loosen. The fixing cap 11 ensures that the electromagnetic component is stably connected, and the power connector is used to supply power to the electromagnetic component.

[0023] In this embodiment, as Figure 1 As shown, the valve body 1 is connected to an oil inlet 3, an oil return port 2, and two working ports 4. The working ports 4 can be connected to a hydraulic cylinder and a hydraulic motor, and the hydraulic cylinder and hydraulic motor are driven to work by hydraulic oil.

[0024] In this embodiment, as Figure 1 As shown, the heat-conducting cover 6 and the diffusion cover 12 are respectively connected to the input port 8 and the output port 9. The output port 9 is connected to the oil inlet 3 through the adapter pipe 5. The hydraulic oil flows smoothly to the valve body 1 along the adapter pipe 5. The hydraulic oil can be directly sent into the valve body 1 by removing the adapter pipe 5.

[0025] In this embodiment, as Figure 2 As shown, the electromagnetic component includes a coil 10 and an iron core 13. The iron core 13 is connected to the valve body 1. The coil 10 is sleeved outside the iron core 13. When the coil 10 is energized, it controls the movement of the iron core 13. The iron core 13 controls the reversing of the valve body 1.

[0026] In this embodiment, as Figure 2As shown, the iron core 13 has threaded portions 14 at both ends. The iron core 13 is screwed to the valve body 1 through the threaded portions 14. The fixing cap 11 is screwed to the threaded portions 14, which is convenient for assembly. The coil 10 and the iron core 13 can be separated by unscrewing the fixing cap 11.

[0027] In this embodiment, as Figure 3 As shown, the inner walls of the heat-conducting cover 6 and the diffuser cover 12 are provided with a heat-conducting layer 15. The heat-conducting layer 15 is attached to the surface of the electromagnetic component and is in contact with the coil 10. The heat-conducting layer 15 can be made of silicone grease. The silicone grease is used to fill the gap between the heat-conducting cover 6 and the diffuser cover 12 and the coil 10 to improve the heat conduction efficiency.

[0028] In this embodiment, as Figure 1 As shown, both the heat-conducting cover 6 and the diffusion cover 12 are provided with heat-conducting strips 7, which is beneficial for the passive heat dissipation of the heat-conducting cover 6 and the diffusion cover 12.

[0029] Specifically, during use, the hydraulic oil pipeline is connected to the inlet 8. When the coil 10 is energized and generates heat, the heat from the coil 10 is conducted to the heat conduction cover 6 and the diffuser 12 through the heat conduction layer 15. The hydraulic oil flowing in the receiving cavity 16 absorbs the heat from the heat conduction cover 6 and the diffuser 12. When the hydraulic oil flows from the receiving cavity 16 along the transfer pipe 5 to the valve body 1, the flowing hydraulic oil smoothly carries away the heat from the heat conduction cover 6 and the diffuser 12, which can continuously cool the coil 10, improve the heat dissipation efficiency of the coil 10, improve the stability of the micro-motion valve assembly and extend its service life, and enable the hydraulic system pressure and flow to be precisely controlled according to the predetermined parameters, thereby improving the reliability of the hydraulic system.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forklift-operated micro-motion valve assembly, characterized in that, include: The valve body (1) is equipped with an electromagnetic component on its side, which controls the reversing of the valve body (1). A heat-conducting cover (6) is connected to a diffusion cover (12). The heat-conducting cover (6) and the diffusion cover (12) are fitted outside the electromagnetic component. The heat-conducting cover (6) and the diffusion cover (12) are provided with mutually communicating receiving cavities (16). The receiving cavity (16) is connected to the valve body (1). A fixing cap (11) is connected to an electromagnetic component. The electromagnetic component is provided with a contact head (17), which blocks the heat-conducting cover (6).

2. The forklift-operated micro-motion valve assembly according to claim 1, characterized in that: The valve body (1) is connected to an oil inlet (3), an oil return port (2), and two working ports (4).

3. A forklift-operated micro-motion valve assembly according to claim 2, characterized in that: The heat-conducting cover (6) and the diffusion cover (12) are respectively connected to the inlet (8) and the outlet (9), and the outlet (9) is connected to the oil inlet (3) through the adapter pipe (5).

4. A forklift-operated micro-motion valve assembly according to claim 1, characterized in that: The electromagnetic component includes a coil (10) and an iron core (13), the iron core (13) being connected to the valve body (1).

5. A forklift-operated micro-motion valve assembly according to claim 4, characterized in that: The iron core (13) has threaded portions (14) at both ends. The iron core (13) is screwed to the valve body (1) through the threaded portions (14). The fixing cap (11) is screwed to the threaded portions (14).

6. A forklift-operated micro-motion valve assembly according to claim 1, characterized in that: The inner walls of the heat-conducting cover (6) and the diffusion cover (12) are provided with a heat-conducting layer (15), which is attached to the surface of the electromagnetic component.

7. A forklift-operated micro-motion valve assembly according to claim 1, characterized in that: Both the heat-conducting cover (6) and the diffuser cover (12) are provided with heat-conducting strips (7).

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