Simple gripper saw valve group

Abstract

The utility model discloses a simple gripper saw valve group which comprises a gripper saw valve block, a plurality of insertion holes are formed in the gripper saw valve block, a first one-way valve, a second one-way valve, a one-way sequence valve, an overflow valve, a hydraulic control one-way valve and a direct-acting sequence valve are installed in the insertion holes respectively, and a plate type ball valve is arranged at the upper end of the gripper saw valve block. The gripper saw valve block is arranged, and the first one-way valve, the second one-way valve, the one-way sequence valve, the overflow valve, the hydraulic control one-way valve and the direct-acting sequence valve are installed in the corresponding insertion holes of the gripper saw valve block according to requirements, so that miniaturization of the device is easy to achieve, the structure is simple, leakage of an external connecting pipe is reduced, the weight is reduced, and cost is reduced. The cost is reduced; and when the product is used in hydraulic equipment of the feller, the overall structural size and weight of the equipment are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control, in particular to a simple grab hand saw valve group. Background Art

[0002] The grab saw is a commonly used mechanical equipment in forestry felling and municipal garden construction. Its main function is to be installed on the working arm of the excavator to grab and saw off wood or branches. When the wood is divided into sections and piled, the length of the sawed wood is generally required to meet the corresponding standards. At present, the grab saws on the market, whether domestic or fully imported, generally have a standard rod installed on the grab saw to determine the grab and cut position. These designs can basically meet the requirements when the consistency of the segment length is not high. At present, the grab saw is controlled by the grab saw valve group when in use.

[0003] The existing grab saw valve group connects various valve components through external pipelines to achieve sequential movement of the oil cylinder and hydraulic motor. It has problems such as complex structure, large size, leakage, and difficulty in achieving sequential movement. Therefore, it is necessary to design a simple grab saw valve group. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a simple grab hand saw valve group.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a simple grab saw valve group, including a grab saw valve block, the grab saw valve block is provided with a plurality of sockets, the first one-way valve, the second one-way valve, the one-way sequence valve, the overflow valve, the hydraulically controlled one-way valve and the direct-acting sequence valve are respectively installed in the sockets, and a plate-type ball valve is arranged on the upper end of the grab saw valve block.

[0006] As a further description of the above technical solution:

[0007] The plate-type ball valve is movably connected with a screw inside, the screw passes through the plate-type ball valve, and is threadedly connected to the valve block of the grab saw.

[0008] As a further description of the above technical solution:

[0009] The first one-way valves are provided with two, which are respectively distributed inside the upper end and the front end of the valve block of the grab saw.

[0010] As a further description of the above technical solution:

[0011] A port, B port, GCL port, J1 port, SP port, GD port and GU port are respectively opened on both sides of the grab saw valve block, and ST port and GOP port are opened at the rear end of the grab saw valve block.

[0012] The utility model has the following beneficial effects:

[0013] Compared with the prior art, the simple grab saw valve group, by setting a grab saw valve block, installs the first one-way valve, the second one-way valve, the one-way sequence valve, the relief valve, the hydraulic one-way valve and the direct-acting sequence valve in the corresponding jacks of the grab saw valve block as required, so that the device can be easily miniaturized and has a simple structure, which reduces leakage of external pipes, reduces weight and reduces costs; it is easy to realize the linkage of external actuators, and the product is used in feller hydraulic equipment, reducing the overall structural size and weight of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the simple grab hand saw valve assembly proposed by the utility model from a first perspective;

[0015] Figure 2 This is a structural schematic diagram of the simple grab hand saw valve assembly proposed by the utility model from a second perspective;

[0016] Figure 3 A schematic structural diagram of the simple grab hand saw valve assembly proposed by the utility model from a third perspective;

[0017] Figure 4 This is a schematic diagram of the simple grab hand saw valve group proposed by the utility model.

[0018] Legend:

[0019] 1. Gripper saw valve block; 2. First one-way valve; 3. Second one-way valve; 4. One-way sequence valve; 5. Overflow valve; 6. Hydraulic one-way valve; 7. Direct-acting sequence valve; 8. Plate-type ball valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-4The simple grab saw valve group provided by the utility model includes a grab saw valve block 1, and a plurality of jacks are provided on the grab saw valve block 1, and a first non-return valve 2, a second non-return valve 3, a non-return sequence valve 4, a relief valve 5, a hydraulic non-return valve 6 and a direct-acting sequence valve 7 are installed inside the jacks respectively, and a plate-type ball valve 8 is provided at the upper end of the grab saw valve block 1. The plate-type ball valve 8 is movably connected with a screw inside, and the screw passes through the plate-type ball valve 8 and is threadedly connected to the grab saw valve block 1. Two first non-return valves 2 are provided, which are respectively distributed inside the upper end and the front end of the grab saw valve block 1. A port, B port, GCL port, J1 port, SP port, GD port, and GU port are respectively provided on both sides of the grab saw valve block 1, and an ST port and a GOP port are provided at the rear end of the grab saw valve block 1.

[0022] Working principle: When the pressure oil enters the gripper saw valve block 1 from port A through the pipeline, the oil flows through the hydraulic control check valve 6 to the GCL port and enters the external oil cylinder. The clamp cylinder clamps the wood. The plate ball valve 8 is manually opened. The oil passes through the sequence valve to the SP port and enters the hydraulic motor to drive the saw blade to cut the wood. At the same time, the hydraulic oil flowing out of the hydraulic motor enters the GD port through the first check valve 2 from the ST port and then into the swing saw cylinder, thereby ensuring that the wood can be completely cut. The external oil pump can replenish oil to the swing saw cylinder through the J1 port to improve cutting efficiency. When the pressure oil enters the gripper saw valve block 1 from port B through the pipeline, the oil flows through the check sequence valve 4 to the GOP port and enters the external oil cylinder. The clamp cylinder releases the wood. At the same time, the hydraulic oil enters the swing saw cylinder from the GU port, and the hydraulic motor base is reset. The hydraulic motor does not rotate during this process. The whole process completes the action of grasping, cutting and releasing the wood, thereby realizing the sequential action of the actuator. The valve block is provided with a grab saw valve block 1, and the first non-return valve 2, the second non-return valve 3, the non-return sequence valve 4, the overflow valve 5, the hydraulic non-return valve 6 and the direct-acting sequence valve 7 are installed in the corresponding jacks of the grab saw valve block 1 as required, so that the device can be easily miniaturized and has a simple structure, which reduces leakage of external pipes, reduces weight and reduces costs; it is easy to realize the linkage of external actuators, and the product is used in hydraulic equipment of logging machines, which reduces the overall structural size and weight of the equipment.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A simple hand saw valve assembly, comprising a hand saw valve block (1), characterized in that: The grab saw valve block (1) is provided with a plurality of jacks, wherein a first one-way valve (2), a second one-way valve (3), a one-way sequence valve (4), a relief valve (5), a hydraulic one-way valve (6) and a direct-acting sequence valve (7) are respectively installed in the jacks, and a plate-type ball valve (8) is arranged at the upper end of the grab saw valve block (1).

2. The simple grab hand saw valve assembly according to claim 1, characterized in that: The plate-type ball valve (8) is movably connected with a screw inside, the screw passes through the plate-type ball valve (8) and is threadedly connected to the valve block (1) of the grab saw.

3. The simple grab hand saw valve assembly according to claim 1, characterized in that: Two first one-way valves (2) are provided, which are respectively distributed inside the upper end and the front end of the grab saw valve block (1).

4. The simple grab hand saw valve assembly according to claim 1, characterized in that: The two sides of the grab saw valve block (1) are respectively provided with an A port, a B port, a GCL port, a J1 port, an SP port, a GD port, and a GU port, and the rear end of the grab saw valve block (1) is provided with an ST port and a GOP port.

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