Novel pilot control valve for crane

Abstract

A novel pilot control valve for a crane is provided with a valve body, an oil inlet is formed in the valve body, an oil injection cavity is formed in the oil inlet, a flow dividing component is arranged in the oil injection cavity, and the flow dividing component is a flow dividing guide rod, so that a left oil outlet and a right oil outlet can be used for oil outlet of an oil way, and the oil outlet of the oil way is not influenced. An oil inlet is formed in the control valve, oil can be fed into an oil way through the oil inlet, an oil injection cavity is formed in the oil inlet, a flow dividing guide rod is arranged in the oil injection cavity, and a flow dividing table is arranged on the flow dividing guide rod, so that flow dividing of the oil way can be achieved through the flow dividing table, and a threaded hole is formed in the bottom of the control valve. The locking threaded rod is arranged on the assembly bottom plate, and the valve body of the control valve and the assembly bottom plate are further assembled and fixed by means of mutual matching of the locking threaded rod and the threaded hole.

Description

Technical Field

[0001] The utility model relates to a control valve, in particular to a novel pilot control valve for cranes. Background Art

[0002] At present, with the development of hydraulic technology, the hydraulic system of construction machinery is developing towards high pressure and large flow. High-pressure and large-flow hydraulic valves are usually controlled by small-flow pilot valves. For example, large-flow hydraulic pumps, hydraulic motors, hydraulic-controlled multi-way directional valves, etc. often require proportional pilot valves for control. The pilot control valve can only control a single hydraulic pump, hydraulic motor, or single-chip hydraulic-controlled directional valve. Many types of hydraulic components are also used when the crane is in operation, and control valves are generally used. These control valves can control the oil circuit, making the operation of the crane more stable.

[0003] In the prior art: CN202020985087.3 centralized electromagnetic control valve group for automobile crane. The utility model provides a centralized electromagnetic control valve group for automobile crane; it includes an air compressor, an air dryer, a four-circuit protection valve, an air tank and a centralized electromagnetic valve; the air outlet of the air compressor is connected to the air inlet of the air dryer, the air outlet of the air dryer is connected to the air inlet of the four-circuit protection valve, the air outlet of the four-circuit protection valve is connected to the air inlet of the air tank, the air outlet of the air tank is connected to the air inlet of the centralized electromagnetic valve, and the centralized electromagnetic valve is provided with several air outlets.

[0004] Although the prior art concentrates multiple single solenoid valves to save layout space, protect the branch cylinder and increase service life, in actual use, it also causes the valve body to be not firmly assembled during further assembly. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a novel pilot control valve for a crane.

[0006] The utility model is implemented by the following technical solution: a new pilot control valve for a crane is provided with a valve body, an oil inlet is provided on the valve body, an oil filling cavity is provided in the oil inlet, a diverter component is provided in the oil filling cavity, the diverter component is a diverter guide rod, a diverter platform is provided on the diverter guide rod, an oil outlet is provided on the valve body, the oil outlet is divided into a left oil outlet and a right oil outlet, an oil outlet pipeline is provided between the left oil outlet and the right oil outlet, an assembly component is provided on the valve body, the assembly component is an assembly base plate, a locking component is provided on the assembly base plate, the locking component is a locking circular hole, and a locking screw is provided in the locking circular hole.

[0007] The valve body is provided with an oil outlet port, the oil outlet port and the oil outlet are assembled and connected with each other, and the oil outlet port is provided with an external threaded platform.

[0008] The valve body is provided with a shielding piece, the valve body is provided with a threaded opening, a threaded rod is provided in the threaded opening, and the shielding piece is provided on the threaded rod.

[0009] The shielding piece and the threaded rod are assembled and connected to each other, the threaded rod moves in the threaded opening by relying on external force, and the shielding piece is an elastic shielding piece.

[0010] The locking circular holes of the assembly base plate are screw holes, gaskets are arranged in the screw holes, and screws are assembled in the screw holes.

[0011] Compared with the prior art, the utility model is provided with a left oil outlet and a right oil outlet on the control valve when it is necessary to control the oil circuit, so that the left oil outlet and the right oil outlet can be used to discharge the oil from the oil circuit, and an oil inlet is provided on the control valve, and the oil inlet can be used to fill the oil circuit, an oil filling cavity is provided in the oil inlet, a diversion guide rod is provided in the oil filling cavity, and a diversion platform is provided on the diversion guide rod, so that the diversion platform can be used to divert the oil circuit, a threaded hole is provided at the bottom of the control valve, and a locking threaded rod is provided on the assembly base plate, and the valve body of the control valve and the assembly base plate are further assembled and fixed by relying on the mutual cooperation of the locking threaded rod and the threaded hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a cross-sectional view of the utility model;

[0015] Figure 4 It is a cross-sectional view of the utility model;

[0016] In the figure: 1 is the valve body, 2 is the oil inlet, 3 is the oil filling cavity, 4 is the diverter guide rod, 5 is the diverter platform, 6 is the left oil outlet, 7 is the right oil outlet, 8 is the oil outlet pipe, 9 is the assembly base, 10 is the locking hole, 11 is the oil outlet port, 12 is the external threaded platform, 13 is the shielding piece, 14 is the threaded rod, 15 is the screw, and 16 is the thin rod. DETAILED DESCRIPTION

[0017] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] A new pilot control valve for cranes is provided with a valve body 1, an oil inlet 2 is provided on the valve body 1, an oil filling cavity 3 is provided in the oil inlet 2, a diverter component is provided in the oil filling cavity 3, the diverter component is a diverter guide rod 4, a diverter platform 5 is provided on the diverter guide rod 4, an oil outlet is provided on the valve body 1, the oil outlet is divided into a left oil outlet 6 and a right oil outlet 7, an oil outlet pipe 8 is provided between the left oil outlet 6 and the right oil outlet 7, an assembly component is provided on the valve body 1, the assembly component is an assembly base plate 9, a locking component is provided on the assembly base plate 9, the locking component is a locking circular hole 10, and a locking screw is provided in the locking circular hole 10.

[0019] In order to divert the oil circuit in the valve body, a diversion guide rod 4 and a diversion platform 5 can be provided in the valve body 1. The oil circuit can be diverted by relying on the diversion platform 5. When the oil enters, the oil circuit will encounter the diversion platform, and then the oil circuit will go around the two sides of the diversion platform into the valve body. Because a thin rod 16 is provided between the diversion guide rod 4 and the diversion platform 5, such a thin rod 16 can provide a good path for the oil circuit to enter the valve body, so that the local pressure of the oil circuit will not be too high, thereby ensuring the stable operation of the valve body 1. An oil outlet port 11 is provided on the valve body 1, and the oil outlet port 11 and the oil outlet are assembled and connected to each other. An external threaded platform 12 is provided on the oil outlet port, and a shielding piece 13 is provided on the valve body 1. A threaded opening is provided on the valve body 1, and a threaded rod 14 is provided in the threaded opening, and a shielding piece 13 is provided on the threaded rod 14.

[0020] In order to allow the position of the oil outlet port 11 to be adjusted and closed at any time, a shielding piece 13 can be used to shield the oil circuit. A threaded rod 14 is provided at the oil outlet port 11, and a shielding piece 13 is provided on the threaded rod 14. In this way, under the operation of the control personnel, only the threaded rod 14 needs to be rotated, so that the shielding piece 13 can be used to block the oil circuit or open the oil circuit, making the control of the oil circuit more convenient. The shielding piece 13 and the threaded rod 14 are assembled and connected to each other, and the threaded rod 14 is moved in the threaded mouth by external force, and the shielding piece 13 is an elastic shielding piece.

[0021] In order to facilitate the assembly and positioning of the valve body as a whole, an assembly base plate 9 can be provided at the bottom of the valve body 1. The assembly base plate 9 can be used as a support for the bottom of the valve body, which can better provide supporting force to the bottom of the valve body 1. The locking circular hole of the assembly base plate 9 is a screw hole, which is assembled by screws. Screw holes are provided on the base plate 9, gaskets are provided in the screw holes, and screws 15 are assembled in the screw holes.

[0022] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A novel pilot control valve for cranes, comprising a valve body, an oil inlet provided on the valve body, an oil filling cavity provided in the oil inlet, a diverter component provided in the oil filling cavity, the diverter component being a diverter guide rod, a diverter platform provided on the diverter guide rod, an oil outlet provided on the valve body, the oil outlet being divided into a left oil outlet and a right oil outlet, an oil outlet pipeline provided between the left and right oil outlets, and characterized in that: The valve body is provided with an assembly component, which is an assembly base plate. The assembly base plate is provided with a locking component, which is a locking circular hole, and a locking screw is provided in the locking circular hole.

2. The new pilot control valve for crane according to claim 1 is characterized in that: The valve body is provided with an oil outlet port, the oil outlet port and the oil outlet are assembled and connected with each other, and the oil outlet port is provided with an external threaded platform.

3. The new pilot control valve for crane according to claim 1 is characterized in that: The valve body is provided with a shielding piece, the valve body is provided with a threaded opening, a threaded rod is provided in the threaded opening, and the shielding piece is provided on the threaded rod.

4. The new pilot control valve for crane according to claim 3 is characterized in that: The shielding piece and the threaded rod are assembled and connected to each other, the threaded rod moves in the threaded opening by relying on external force, and the shielding piece is an elastic shielding piece.

5. The new pilot control valve for crane according to claim 1 is characterized in that: The locking circular holes of the assembly base plate are screw holes, gaskets are arranged in the screw holes, and screws are assembled in the screw holes.

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