Slide-in type hydraulic two-way cartridge valve dismounting and mounting device and dismounting and mounting method

Abstract

The invention discloses a slide-in type hydraulic two-way cartridge valve dismounting and mounting device and dismounting and mounting method, and relates to the technical field of two-way cartridge valves, the slide-in type hydraulic two-way cartridge valve dismounting and mounting device comprises a mounting device and a dismounting device; the mounting device comprises a cover plate and a plurality of screws which can penetrate through the cover plate and are screwed on the valve body, limiting grooves corresponding to the screws are formed in the cover plate, and the limiting grooves can position the screws and limit the screwing depth of the screws into the valve body; an inserting piece is arranged in the valve body and comprises an inserting piece valve sleeve, and two side holes are formed in the inserting piece valve sleeve. The dismounting device comprises a support, a connecting piece capable of being clamped into two side holes in the plug-in valve sleeve, a tension shaft capable of penetrating through the support and fixedly connected with the connecting piece, and a drawing nut in threaded connection with the tension shaft and located on the side, away from the connecting piece, of the support, and the drawing nut can abut against the support.

Description

Technical Field

[0001] The invention relates to the technical field of two-way cartridge valves, and in particular to a disassembly and assembly device and a disassembly and assembly method of a slide-in type hydraulic two-way cartridge valve. Background Art

[0002] Slide-in hydraulic two-way cartridge valves are widely used in various high-pressure and high-flow hydraulic systems. Its main functional components are plug-ins and control covers. The plug-in is installed in the valve body socket. There are two seals on the side of the plug-in that are in close contact with the inner wall of the socket. The friction is very large, and it is difficult to remove the plug-in. Generally, a curved hook made of steel bars is used to hook the side hole of the plug-in valve sleeve, and then a heavy object is used to knock the plug-in out. This method can easily scratch the plug-in, the inner wall of the socket and the surface of the valve body. It is also difficult to remove larger plug-ins. The cover is used to press the plug-in and has different control oil circuits. The cover is fixed to the valve body with screws. Generally, the screws are tightened with an inner hexagonal wrench or a pneumatic wrench. This method has inconsistent tightening torque and is also easy to miss, causing parts to loosen and oil leakage. Summary of the invention

[0003] The object of the present invention is to provide a disassembly and assembly device and method for a slide-in hydraulic two-way cartridge valve to solve the problems existing in the above-mentioned prior art, and to enable safe and efficient disassembly of the plug-in without causing damage to the device.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a sliding-in hydraulic two-way cartridge valve disassembly and assembly device, comprising an installation device and a disassembly device;

[0006] The mounting device comprises a cover plate and a plurality of screws that can pass through the cover plate and be screwed onto the valve body, and the cover plate is provided with limiting grooves corresponding to the screws, and the limiting grooves can position the screws and limit the screwing depth of the screws into the valve body;

[0007] A plug-in is provided in the valve body, the plug-in includes a plug-in valve sleeve, and the plug-in valve sleeve is provided with two side holes, the disassembly device includes a bracket, a connecting piece that can be inserted into the two side holes on the plug-in valve sleeve, a tension shaft that can pass through the bracket and be fixedly connected to the connecting piece, and a pulling nut threadedly connected to the tension shaft and located on the side of the bracket away from the connecting piece, and the pulling nut can abut against the bracket.

[0008] Preferably, the connecting member comprises two L-shaped plates, the short side of each of the L-shaped plates can be inserted into one of the side holes, and the tension shaft is fixedly connected to the two L-shaped plates.

[0009] Preferably, one end of a bolt without a nut can pass through the two L-shaped plates and the tension shaft and be threadedly connected with a locking nut to achieve a fixed connection between the tension shaft and the two L-shaped plates.

[0010] The present invention also provides a method for disassembling and assembling a slide-in hydraulic two-way cartridge valve, which is applied to the slide-in hydraulic two-way cartridge valve disassembling and assembling device as described above, and includes an installation step and a disassembly step:

[0011] The installation steps include:

[0012] Place the plug-in into the socket of the valve body, use the cover plate to abut against the plug-in, and tighten the screws until the plug-in is fully inserted into the socket;

[0013] Draw a continuous marking line on the top surface of the cover plate and the top surface of the screw;

[0014] Tighten all the screws to the set tightening torque, then draw a continuous marking line on the top surface of the cover plate and the top surface of the screws, and complete the installation of the plug-in after all the screws are tightened;

[0015] The disassembly step comprises:

[0016] Insert the short sides of the two L-shaped plates into the two side holes of the plug-in valve sleeve respectively;

[0017] Use bolts to securely connect the tension shaft to the two L-shaped plates;

[0018] Placing a bracket on the valve body, passing the tension shaft through the bracket, and tightening a pull nut on the side of the bracket where the tension shaft is located away from the L-shaped plate;

[0019] Continue to tighten the pull nut to allow the L-shaped plate to drive the plug-in valve sleeve to come out of the valve body, thereby completing the disassembly.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The slide-in hydraulic two-way cartridge valve disassembly and assembly device and disassembly method provided by the present invention adopt the method of multiple tightening and double marking lines to achieve reliable installation of the cartridge valve and have sufficient error prevention measures; the special disassembly tool is adopted to improve the efficiency and safety of disassembling the cartridge valve, and will not damage the plug-in unit, the valve hole and the valve body surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the installation device provided by the present invention;

[0024] Figure 2 A schematic diagram of the structure of the disassembly device provided by the present invention;

[0025] In the figure: 1-valve body; 2-plug-in; 21-plug-in valve sleeve; 3-cover plate; 4-screw; 5-L-shaped plate; 6-tension shaft; 7-bracket; 8-pull nut. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a disassembly and assembly device and method for a slide-in hydraulic two-way cartridge valve to solve the problems existing in the prior art, and to enable safe and efficient disassembly of the plug-in without causing damage to the device.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention provides a sliding type hydraulic two-way cartridge valve disassembly and assembly device, such as Figures 1-2 As shown, it is used for disassembling and assembling the plug-in 2 and the valve body 1, including an installation device and a disassembly device; the installation device includes a cover plate 3 and a plurality of screws 4 that can pass through the cover plate 3 and be screwed on the valve body 1, preferably four screws 4 that are evenly arranged on the cover plate 3, and a limiting groove is provided on the cover plate 3 corresponding to the screw 4, and the limiting groove can position the screw 4 and limit the screwing depth of the screw 4 into the valve body 1; the plug-in 2 includes a plug-in valve sleeve 21, and the plug-in valve sleeve 21 is provided with two side holes, and the disassembly device includes a bracket 7, a connecting piece that can be inserted into the side hole, a tension shaft 6 that can pass through the bracket 7 and be fixedly connected to the connecting piece, and a pull nut 8 that is threadedly connected to the tension shaft 6 and is located on the side of the bracket 7 away from the connecting piece, and the pull nut 8 can abut against the bracket 7.

[0030] In some embodiments, the connecting member includes two L-shaped plates 5 , the short side of each L-shaped plate 5 can be inserted into a side hole, and the tension shaft 6 is fixedly connected to the two L-shaped plates 5 .

[0031] In some embodiments, the end of a bolt without a nut can pass through the long side of an L-shaped plate 5, the tension shaft 6 and the long side of another L-shaped plate 5 in sequence and be threadedly connected with a locking nut to achieve a fixed connection between the tension shaft 6 and the two L-shaped plates 5.

[0032] The present invention also provides a sliding-in hydraulic two-way cartridge valve disassembly and assembly method, which is applied to a sliding-in hydraulic two-way cartridge valve disassembly and assembly device, and the installation process includes the following steps:

[0033] Step 1: When installing the slide-in hydraulic two-way cartridge valve, first put the plug-in 2 into the socket of the valve body 1. Since there is a seal on the side of the plug-in 2, the plug-in 2 cannot be completely put into the socket at this time, and part of it is exposed outside. First tighten the screw 4 with an ordinary wrench, and press the plug-in 2 completely into the socket through the cover plate 3;

[0034] Step 2: Tighten the screw 4 with a pneumatic wrench, and draw a continuous marking line between the head of the screw 4 and the surface of the cover plate 3;

[0035] Step 3: Adjust the pneumatic wrench torque to be smaller than the tightening torque of screw 4, and then use the torque wrench to tighten screw 4 to the set tightening torque, and then draw a second continuous marking line on the head of screw 4 and the surface of cover 3. At this time, the first marking line has been offset between the screw cap 4 and the cover 3. Since there is a staggered marking line and a complete and continuous marking line, it means that screw 4 has been tightened in place and will not be missed, and the installation is completed.

[0036] The disassembly process requires the use of a dedicated disassembly device, which includes the following steps:

[0037] Step 1: Extend the short side of the L-shaped plate 5 into the inner hole of the plug-in valve sleeve 21 and connect it to the side hole on one side of the plug-in valve sleeve 21, and connect the short side of the other L-shaped plate 5 to the other side hole of the plug-in valve sleeve 21;

[0038] Step 2: Place the tension shaft 6 between the long sides of the two L-shaped plates 5, and connect the tension shaft 6 and the two L-shaped plates 5 with bolts;

[0039] Step 3: The bracket 7 is a load-bearing device, and a through hole is set in the middle of the bracket 7. The bracket 7 is placed on the valve body 1 across the insertion hole, so that one end of the tension shaft 6 passes through the through hole. The end of the tension shaft 6 away from the L-shaped plate 5 is provided with an external thread. The pull nut 8 is installed on the threaded section of the tension shaft 6 and contacts the bracket 7;

[0040] Step 4: Turn the pull nut 8 to move the tension shaft 6 upward, and drive the plug-in valve sleeve 21 to move upward through the L-shaped plate 5 until the seal on the side of the plug-in valve sleeve 21 is exposed from the insertion hole, and then the plug-in valve sleeve 21 can be taken out to complete the disassembly.

[0041] The sliding-in hydraulic two-way cartridge valve disassembly and assembly device and disassembly and assembly method provided by the present invention realize the installation and disassembly of the sliding-in hydraulic two-way cartridge valve, adopt the method of multiple tightening and double marking lines, realize the reliable installation of the cartridge valve and have sufficient error prevention measures; adopt special disassembly tools to improve the efficiency and safety of disassembling the cartridge valve without damaging the plug-in 2, the valve hole and the surface of the valve body 1.

[0042] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A slide-in hydraulic two-way cartridge valve disassembly and assembly device, characterized in that: Including installation device and disassembly device; The mounting device comprises a cover plate and a plurality of screws that can pass through the cover plate and be screwed onto the valve body, and the cover plate is provided with limiting grooves corresponding to the screws, and the limiting grooves can position the screws and limit the screwing depth of the screws into the valve body; A plug-in is provided in the valve body, the plug-in includes a plug-in valve sleeve, and the plug-in valve sleeve is provided with two side holes, the disassembly device includes a bracket, a connecting piece that can be inserted into the two side holes on the plug-in valve sleeve, a tension shaft that can pass through the bracket and be fixedly connected to the connecting piece, and a pulling nut threadedly connected to the tension shaft and located on the side of the bracket away from the connecting piece, and the pulling nut can abut against the bracket.

2. The slide-in hydraulic two-way cartridge valve disassembly and assembly device according to claim 1, characterized in that: The connecting member comprises two L-shaped plates, the short sides of each of the L-shaped plates can be inserted into one of the side holes, and the tension shaft is fixedly connected to the two L-shaped plates.

3. The slide-in hydraulic two-way cartridge valve disassembly and assembly device according to claim 2, characterized in that: One end of a bolt without a nut can pass through the two L-shaped plates and the tension shaft and be threadedly connected with a locking nut to achieve a fixed connection between the tension shaft and the two L-shaped plates.

4. A method for disassembling and assembling a sliding-in hydraulic two-way cartridge valve, applied to the disassembling and assembling device for a sliding-in hydraulic two-way cartridge valve according to any one of claims 1 to 3, characterized in that: Including installation steps and removal steps: The installation steps include: Place the plug-in into the socket of the valve body, use the cover plate to abut against the plug-in, and tighten the screws until the plug-in is fully inserted into the socket; Draw a continuous marking line on the top surface of the cover plate and the top surface of the screw; Tighten all the screws to the set tightening torque, then draw a continuous marking line on the top surface of the cover plate and the top surface of the screws, and complete the installation of the plug-in after all the screws are tightened; The disassembly step comprises: Insert the short sides of the two L-shaped plates into the two side holes of the plug-in valve sleeve respectively; Use bolts to securely connect the tension shaft to the two L-shaped plates; Placing a bracket on the valve body, passing the tension shaft through the bracket, and tightening a pull nut on the side of the bracket where the tension shaft is located away from the L-shaped plate; Continue to tighten the pull nut to allow the L-shaped plate to drive the plug-in valve sleeve to come out of the valve body, thereby completing the disassembly.

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