Hydraulic valve group for high wire dismounting ring tool

Abstract

The utility model provides a kind of hydraulic valve group for high line dismounting ring tool, it is related to high line ring dismounting hydraulic system technical field, including first valve group, second valve group, third valve group, high pressure oil supply port P1, high pressure oil supply port P2, low pressure oil supply port P3, oil supply port P0, oil return port T, oil supply port P0, oil return port T are all with first valve group, second valve group, third valve group intercommunication, first valve group is by electromagnetic reversing valve V1-1, pressure reducing valve V2-1, booster V3-1 is formed, output is communicated with high pressure oil supply port P1;Second valve group is by electromagnetic reversing valve V1-2, pressure reducing valve V2-2, booster V3-2 is formed, output is communicated with high pressure oil supply port P2;Third valve group is by electromagnetic reversing valve V1-3 is formed, output is communicated with low pressure oil supply port P3.Realize to reduce cost and increase efficiency, reduce equipment maintenance quantity, promote system service life.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic systems for disassembling and assembling wire rod rings, and particularly to hydraulic valve groups used in equipment for disassembling and assembling tungsten carbide roller rings in pre-finishing mills, finishing mills, and reducing sizing mills. Background Technology

[0002] Due to the characteristics of the production process, high-speed wire rod production plants require multiple roll ring assembly and disassembly operations daily. Roll rings are fixed in two ways: by tightening or removing the tapered sleeve structure using a rotating nut, or by tightening or removing the tapered sleeve structure using a hydraulic mechanism. The method of tightening or removing the tapered sleeve using a hydraulic mechanism requires specialized hydraulic tools and a matching hydraulic system for roll assembly and disassembly. This hydraulic system has two output interfaces: one is a low-pressure port, and the other is a high-pressure control valve that sets two different output pressures for use by the roll assembly or disassembly tools. The motor, pump, valve group, and control system are integrated into a small mobile platform. When roll assembly is required, the roll assembly tool connects to both the low-pressure and high-pressure ports to output the first pressure; when roll disassembly is required, the high-pressure oil pipe of the roll assembly tool must be disconnected and connected to the roll disassembly tool.

[0003] The existing system has the following drawbacks: 1. All oil pumps and control valves are high-pressure components, incompatible with other hydraulic systems in high-speed lines. Spare parts are more expensive than low-pressure components, making maintenance difficult and costly. 2. The two set high-pressure oil sources share a single interface, requiring disassembly and reassembly of oil pipes when switching between roller loading and unloading tools, extending operation time. 3. The integrated custom-designed control circuit board has a fixed control program, requiring targeted procurement after damage, which does not reduce costs. 4. The overall size is small, with the oil pump motor integrated into the oil tank. The system lacks reliable oil filtration, making it impossible to guarantee oil cleanliness, and the components have a short lifespan.

[0004] In summary, existing hydraulic systems suffer from problems such as non-standard components, high prices, long tool changeover times, difficulty in maintenance, and short lifespan. Utility Model Content

[0005] This utility model proposes a hydraulic valve group for high-speed wire rod removal and assembly / disassembly roller ring tools to solve the problems of non-universal components, high price, long tool changeover time, inconvenient system maintenance, and short lifespan in existing hydraulic systems.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a hydraulic valve group for a high-speed wire rod removal and installation tool, comprising a first valve group, a second valve group, a third valve group, a high-pressure oil supply port P1, a high-pressure oil supply port P2, a low-pressure oil supply port P3, an oil supply port P0, and an oil return port T. The oil supply port P0 and the oil return port T are both connected to the first, second, and third valve groups. The first valve group consists of a solenoid directional valve V1-1, a pressure reducing valve V2-1, and a booster V3-1, with its output connected to the high-pressure oil supply port P1. The second valve group consists of a solenoid directional valve V1-2, a pressure reducing valve V2-2, and a booster V3-2, with its output connected to the high-pressure oil supply port P2. The third valve group consists of a solenoid directional valve V1-3, with its output connected to the low-pressure oil supply port P3.

[0007] Preferably, the system also includes pressure gauges PI-1, PI-2, and PI-3. Pressure gauge PI-1 is connected to the high-pressure oil supply port P1 and is used to detect the pressure of the high-pressure oil supply port P1. Pressure gauge PI-2 is connected to the high-pressure oil supply port P2 and is used to detect the pressure of the high-pressure oil supply port P2. Pressure gauge PI-3 is connected to the low-pressure oil supply port P3 and is used to detect the pressure of the low-pressure oil supply port P3.

[0008] Preferably, it also includes pressure switch S2 and pressure switch S3. Pressure switch S2 is connected to high-pressure oil supply port P2 and is used to detect the pressure value of high-pressure oil supply port P2 and send an electrical signal to the outside. Pressure switch S3 is connected to low-pressure oil supply port P3 and is used to detect the pressure value of low-pressure oil supply port P3 and send an electrical signal to the outside.

[0009] Preferably, the valve seat is also included, and the first valve group, the second valve group, the third valve group, the high-pressure oil supply port P1, the high-pressure oil supply port P2, the low-pressure oil supply port P3, the oil supply port P0, the oil return port T, the pressure gauge PI-1, the pressure gauge PI-2, the pressure gauge PI-3, the pressure switch S2, and the pressure switch S3 are all disposed on the valve seat.

[0010] Preferably, it also includes an oil receiving box, which is disposed below the valve seat.

[0011] Preferably, it also includes a bracket, and the valve seat and oil receiving box are fixed on the bracket.

[0012] Preferably, the pressure reducing valve V2-1 is set to a pressure of 12MPa, the pressure booster V3-1 has a boosting ratio of 5 times, and the output pressure P1 is 60MPa.

[0013] Preferably, the pressure reducing valve V2-2 is set to a pressure of 10 MPa, the pressure booster V3-2 has a boosting ratio of 4 times, and the output pressure P2 is 40 MPa.

[0014] Preferably, the electromagnetic reversing valves V1-3 are configured such that the output pressure is equal to the input pressure, P3=P0=12MPa.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows: The rolling mill hydraulic pump station supplies a low-pressure oil source of approximately 12MPa. The first valve group pressurizes this 12MPa oil source to 60MPa for use by the roll remover; the second valve group pressurizes it to 40MPa for use by the roll installer; and the third valve group directly utilizes the 12MPa oil source for use by the roll installer. This invention uses low-pressure hydraulic components common to high-speed wire rod mills, combined with a booster, to pressurize the low-pressure oil source to high pressure to meet the requirements of the roll removal and installation tools. This reduces the use of high-pressure components in existing equipment. The low-pressure components cost around 300 yuan, while the high-pressure components cost around 2000 yuan, thus reducing procurement costs. Costs of purchasing and subsequent spare parts replacement; This utility model uses a low-pressure pump station in the high-speed wire rod mill as the oil source, eliminating the need for an oil pump motor, thus reducing initial investment and equipment maintenance. Simultaneously, the high-speed wire rod mill's low-pressure pump station has a complete circulation and filtration system, which helps maintain the oil cleanliness for a long time, increasing system lifespan; The roller loading and unloading actions in this utility model do not interfere with each other, eliminating the need to switch pipeline connections, shortening operation time and improving efficiency; The valve assembly is fixed in the operating area, and the control system is integrated into the high-speed wire rod mill's PLC system, eliminating the need for a separate control circuit board, resulting in low initial investment costs and facilitating subsequent maintenance by equipment maintenance personnel.

[0016] The purchase price of each valve assembly is approximately 30,000 yuan, and other pipelines and cables are estimated at 10,000 yuan each. The existing equipment costs approximately 120,000 yuan per unit. The one-time investment cost can be reduced by 80,000 yuan. Based on the 2+2+8+4 structure of the tungsten carbide roll ring mill, at least 6 sets of hydraulic systems are required. The one-time investment per production line can be reduced by 480,000 yuan. The annual maintenance cost is estimated at 10% of the construction cost, which can reduce the annual maintenance cost by 48,000 yuan. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hydraulic valve assembly used in the tool for disassembling and assembling roller rings of the present invention.

[0018] Figure 2 This is a front view of the hydraulic valve assembly used in the high-speed wire rod removal and assembly tool of this utility model. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. Example

[0021] like Figure 1 , 2 As shown, this embodiment provides a hydraulic valve assembly for a high-speed wire rod removal and installation tool, including a bracket 1, an oil receiving box 2, a valve seat 3, a first valve assembly 4, a second valve assembly 5, and a third valve assembly 6. The bracket 1 is welded from square steel and steel plates, mainly supporting and fixing the valve seat 3 and the pressure gauge PI-1 / 2 / 3. The oil receiving box 2 is welded from thin steel plates and is located below the valve seat 3 to prevent oil leakage from the valve assembly from polluting the environment. The valve seat 3 is connected to the oil supply port P0, high-pressure oil supply port P1, high-pressure oil supply port P2, low-pressure oil supply port P3, and return port T by internal thread, and is connected to the pressure switch S1 / 2, the solenoid directional valve V1-1 / 2 / 3, the pressure reducing valve V2-1 / 2, and the booster V3-1 / 2 by high-strength internal hex bolts.

[0022] The first valve group 4, from top to bottom, consists of a solenoid directional valve V1-1, a pressure reducing valve V2-1, and a booster V3-1 stacked together, fixed to the valve seat 3 with high-strength hexagonal bolts. The output is connected to the high-pressure oil supply port P1. The pressure reducing valve V2-1 is set to a pressure of 12 MPa, the booster V3-1 has a boost ratio of 5, and the output pressure P1 is 60 MPa. The second valve group 5, from top to bottom, consists of a solenoid directional valve V1-2, a pressure reducing valve V2-2, and a booster V3-2 stacked together, fixed to the valve seat 3 with high-strength hexagonal bolts. The output is connected to the high-pressure oil supply port P2. The pressure reducing valve V2-2 is set to a pressure of 10 MPa, the booster V3-2 has a boost ratio of 4, and the output pressure P2 is 40 MPa. Valve group 3 is a solenoid directional valve V1-3, which is fixed to valve seat 3 by high-strength internal hex bolts. The output is connected to the low-pressure oil supply port P3, and the output pressure is equal to the input pressure, P3=P0=12MPa.

[0023] Pressure gauge PI-1 is connected to valve seat 3 via a pressure testing hose, and is connected to the high-pressure oil supply port P1 through an internal hole in valve seat 3, used to detect the pressure at high-pressure oil supply port P1. Pressure gauge PI-2 is connected to valve seat 3 via a pressure testing hose, and is connected to the high-pressure oil supply port P2 through an internal hole in valve seat 3, used to detect the pressure at high-pressure oil supply port P2. Pressure gauge PI-3 is connected to valve seat 3 via a pressure testing hose, and is connected to the low-pressure oil supply port P3 through an internal hole in valve seat 3, used to detect the pressure at low-pressure oil supply port P3.

[0024] Pressure switch S2 is connected to the high-pressure oil supply port P2 through an internal hole in valve seat 3. It is used to detect the pressure value of the high-pressure oil supply port P2 and send an electrical signal to the outside. Pressure switch S3 is connected to the low-pressure oil supply port P3 through an internal hole in valve seat 3. It is used to detect the pressure value of the low-pressure oil supply port P3 and send an electrical signal to the outside.

[0025] Except for the turbochargers V3-1 and V3-2, which are domestically produced non-standard parts (some are imported products), all other components are standard parts.

[0026] The system's operation consists of two parts: loading and unloading the rollers. To ensure the quality of the pressure rollers, the loading operation is performed continuously for two cycles.

[0027] Roll loading action: It consists of three actions: lightly pressing the roller ring (or supporting roller), pressing the cone sleeve, and resetting the roller loading device.

[0028] 1. Light pressure roller ring operation. The rolling mill pump station supplies 12MPa oil to the oil supply port P0, which is supplied to the inlet of the solenoid directional valve V1-3 through the internal hole of the valve seat 3. After the PLC controls the solenoid valve coil to be energized, the oil source flows out through the inside of the solenoid directional valve V1-3 to the low-pressure oil port P3, pressure switch S3, and pressure gauge PI-3. The low-pressure chamber of the roller loading tool is connected to the low-pressure oil supply port P3 through a high-pressure hose. Under the action of low-pressure oil, a light pressure action is performed on the roller ring. After the action is completed, the pressure gauge PI-3 displays and the pressure switch S3 is triggered. The PLC receives a signal, and the light pressure roller ring action is completed.

[0029] 2. Cone sleeve clamping action. After the previous action is completed, the PLC-controlled solenoid directional valve V1-2 is energized. At this time, the 12MPa oil supply from the rolling mill pump station is reduced to 10MPa through the pressure reducing valve V2-2, and flows from inside the solenoid directional valve V1-2 to the booster V3-2. The booster V3-2 has a boost ratio of 4 times, that is, an input of 10MPa and an output of 40MPa. At this time, the 40MPa oil flows through the internal hole of the valve seat 3 to the high-pressure oil supply port P2, pressure switch S2, and pressure gauge PI-2. The high-pressure chamber of the roller tool is connected to the high-pressure oil supply port P2 through a high-pressure hose. Under the action of 40MPa high-pressure oil, the roller tool performs the action of clamping the cone sleeve. At this time, the inside of the roller tool is squeezed by the high-pressure oil, and part of the low-pressure oil returns to the solenoid reversing valve V1-3 through the low-pressure oil supply port P3 and finally flows back to the system oil supply line. After the action is completed, the pressure switch S2 sends a signal to the PLC. After receiving the signal, the PLC delays for 3 seconds to maintain the pressure. The action of clamping the cone sleeve is completed.

[0030] 3. Roller Loader Reset Action. After the previous action is completed, the PLC controls the solenoid directional valve V1-2 to de-energize, while the solenoid directional valve V1-3 remains energized. At this time, the low-pressure oil supply port P3 continues to supply oil. Through the internal structure of the roller loading tool, the oil in the pressing cone sleeve mechanism flows back to the return port T via the booster V3-2, solenoid valve V1-2, pressure reducing valve V2-2, and the internal hole of valve seat 3. After the cone sleeve pressing mechanism resets, the pressure switch S3 increases pressure and sends a signal. Upon receiving the signal, the PLC cuts off the power to the solenoid directional valve V1-3. Under the action of its reset spring, the oil in the low-pressure chamber of the roller loader flows back to the return port T via the solenoid directional valve V1-3 and the internal hole of valve seat 3. The reset action is completed. After repeating steps 1, 2, and 3 above, the roller loading action is completed.

[0031] Roll removal action: This consists of two actions: pulling out the tapered sleeve and resetting the pulling mechanism. 1. Pulling out the tapered sleeve: The PLC controls the solenoid valve V1-1 to be energized. At this time, the 12MPa oil supply from the rolling mill pump station is stabilized at 12MPa by the pressure reducing valve V2-1. It then flows from inside the solenoid valve V1-1 to the booster V3-1. The booster V3-1 has a boost ratio of 5, meaning an input of 12MPa and an output of 60MPa. The 60MPa oil then flows through the internal hole of valve seat 3 to the high-pressure oil supply port P1 and pressure gauge PI-1. The roll removal tool is connected to the high-pressure oil supply port P1 via a high-pressure hose. Under the action of the 60MPa high-pressure oil, the roll removal tool pulls out the tapered sleeve. 2. Resetting the pulling mechanism: After the previous action is completed, the PLC controls the solenoid valve V1-1 to be de-energized. The oil returns to the valve group along the original path under the action of the roll removal tool's reset spring, and then returns to the return oil line via the solenoid valve V1-1. The roll removal operation has been completed.

[0032] This embodiment uses universal low-pressure hydraulic components for high-speed wire rod production, combined with a booster, reducing the need for high-pressure hydraulic components and lowering costs, while facilitating daily maintenance. Two high-pressure oil ports are used for the roll removal and roll installation tools respectively, eliminating the need to disassemble oil pipes when switching between tools, saving operation time. Oil is supplied by a low-pressure oil station on the rolling line, eliminating the need for a separate high-pressure pump station, reducing maintenance workload, ensuring oil cleanliness, and extending the service life of system components. The control logic is simple, requiring no separate circuit control board; all controls are integrated into the rolling line PLC, reducing spare parts inventory, saving costs, and facilitating maintenance personnel operation.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A hydraulic valve assembly for a tool for disassembling and assembling roller rings in high-speed wire rod mills, characterized in that: It includes a first valve group, a second valve group, a third valve group, a high-pressure oil supply port P1, a high-pressure oil supply port P2, a low-pressure oil supply port P3, an oil supply port P0, and an oil return port T. The oil supply port P0 and the oil return port T are both connected to the first valve group, the second valve group, and the third valve group. The first valve group consists of a solenoid directional valve V1-1, a pressure reducing valve V2-1, and a booster V3-1, and its output is connected to the high-pressure oil supply port P1. The second valve group consists of a solenoid directional valve V1-2, a pressure reducing valve V2-2, and a booster V3-2, and its output is connected to the high-pressure oil supply port P2. The third valve group consists of a solenoid directional valve V1-3, and its output is connected to the low-pressure oil supply port P3.

2. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 1, characterized in that, It also includes pressure gauges PI-1, PI-2, and PI-3. Pressure gauge PI-1 is connected to the high-pressure oil supply port P1 and is used to detect the pressure of the high-pressure oil supply port P1. Pressure gauge PI-2 is connected to the high-pressure oil supply port P2 and is used to detect the pressure of the high-pressure oil supply port P2. Pressure gauge PI-3 is connected to the low-pressure oil supply port P3 and is used to detect the pressure of the low-pressure oil supply port P3.

3. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 1, characterized in that: It also includes pressure switch S2 and pressure switch S3. Pressure switch S2 is connected to high-pressure oil supply port P2 and is used to detect the pressure value of high-pressure oil supply port P2 and send an electrical signal to the outside. Pressure switch S3 is connected to low-pressure oil supply port P3 and is used to detect the pressure value of low-pressure oil supply port P3 and send an electrical signal to the outside.

4. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 1, 2, or 3, characterized in that: It also includes a valve seat, and the first valve group, the second valve group, the third valve group, the high-pressure oil supply port P1, the high-pressure oil supply port P2, the low-pressure oil supply port P3, the oil supply port P0, the oil return port T, the pressure gauge PI-1, the pressure gauge PI-2, the pressure gauge PI-3, the pressure switch S2, and the pressure switch S3 are all mounted on the valve seat.

5. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 4, characterized in that: It also includes an oil collection box, which is located below the valve seat.

6. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 5, characterized in that: It also includes a bracket, on which the valve seat and oil receiving box are fixed.

7. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 1, characterized in that: The pressure reducing valve V2-1 is set to a pressure of 12MPa, the booster V3-1 has a boost ratio of 5 times, and the output pressure P1 is 60MPa.

8. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 1, characterized in that: The pressure reducing valve V2-2 is set to a pressure of 10MPa, the pressure booster V3-2 has a boost ratio of 4 times, and the output pressure P2 is 40MPa.

9. The hydraulic valve assembly for the high-speed wire rod removal and installation roller ring tool according to claim 1, characterized in that: The electromagnetic reversing valves V1-3 are composed of an output pressure equal to the input pressure, P3=P0=12MPa.

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