Split type AGC servo hydraulic cylinder with external sensor

Abstract

The utility model discloses a split type external sensor AGC servo hydraulic cylinder which comprises a hydraulic cylinder shell, a base is arranged at the bottom of the hydraulic cylinder shell, a reinforcing rib is arranged above the base, an inner rod is arranged in the middle of the interior of the hydraulic cylinder shell, and a rod head is arranged at the top of the inner rod. The sensor is arranged above the hydraulic cylinder shell, the induction ring is arranged at the top of the sensor, the upper protection cover is arranged above the hydraulic cylinder shell, the lower protection cover is arranged at the bottom of the upper protection cover, meanwhile, better sealing performance is provided, and the influence of the external environment on internal components is prevented; the upper gasket and the lower gasket play a buffering role, damage caused by vibration or impact is reduced, the stability and reliability of the whole system are guaranteed, the limiting hole and the positioning hole are used for guaranteeing that the housing can be fixed at the correct position, and therefore the stability and reliability of the whole system are guaranteed, and meanwhile it is guaranteed that the outer sides of the inner rod and the outer cylinder are plated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the related technical field of hydraulic cylinder, concretely relates to a split type external sensor's AGC servo hydraulic cylinder. BACKGROUND

[0002] AGC servo hydraulic cylinder is a kind of high-end servo hydraulic cylinder applied to metallurgical rolling mill, mainly for adjusting roll gap, to realize the accurate control to plate thickness, with the characteristics of high response frequency, low friction, short stroke, the working principle of AGC servo hydraulic cylinder is to control the displacement of hydraulic cylinder by electro-hydraulic servo valve, so that the roll moves up and down to complete the control to roll gap, and then realize the control to plate thickness, and the hydraulic AGC system can continuously measure corresponding parameters by thickness gauge, displacement sensor and pressure sensor, continuously adjust the displacement of screwdown cylinder, rolling pressure and the like, to control the thickness difference of plate strip.

[0003] But the existing inner rod is in the process of reciprocating motion, and the gravel is easy to collide with the outer surface of the hydraulic cylinder barrel and the inner rod, which damages the paint and plating layer on the surface, causes the plating layer of the hydraulic cylinder to fall off, the paint to fall off, and further loses the protection of the hydraulic cylinder, accelerates the corrosion of the hydraulic cylinder, greatly affects the service life of the hydraulic cylinder. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a split type external sensor's AGC servo hydraulic cylinder to solve the problems of the existing inner rod in the process of reciprocating motion, and the gravel is easy to collide with the outer surface of the hydraulic cylinder barrel and the inner rod, which damages the paint and plating layer on the surface, causes the plating layer of the hydraulic cylinder to fall off, the paint to fall off, and further loses the protection of the hydraulic cylinder, accelerates the corrosion of the hydraulic cylinder, greatly affects the service life of the hydraulic cylinder.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a split type external sensor's AGC servo hydraulic cylinder, comprising a hydraulic cylinder shell,

[0006] The bottom of the hydraulic cylinder shell is provided with a base, the base is provided with a reinforcing rib above, the inner rod is arranged at the middle of the hydraulic cylinder shell, the rod head is arranged at the top of the inner rod, the sensor is arranged above the hydraulic cylinder shell, and the induction ring is arranged at the top of the sensor, and the split type external sensor's AGC servo hydraulic cylinder is powered by external power supply,

[0007] The upper protective cover is arranged above the hydraulic cylinder shell, the lower protective cover is arranged at the bottom of the upper protective cover, and the cover shell is arranged above the upper protective cover.

[0008] Preferably, the upper protective cover is provided with an inner hole at the upper position, and is provided with a side hole at the outer position of the inner hole, and the side hole is arranged in an annular array, the upper protective cover is in sliding connection with the lower protective cover, and the hydraulic cylinder shell is provided with a sliding groove at the middle position in the inner part.

[0009] Preferably, the rod head is provided with a threaded rod at the bottom position, is provided with an upper gasket at the bottom position, is provided with a lower gasket at the bottom position of the upper gasket, is provided with a fixing hole at the middle position of the top of the inner rod, and is provided with a positioning piece at the outer position of the fixing hole.

[0010] Preferably, the positioning piece is in fixed connection with the inner rod, the rod head is in threaded connection with the inner rod, the upper gasket and the lower gasket are provided with a cover at the middle position, are provided with a limiting hole at the middle position in the inner part, and are provided with a positioning hole in an array at the outer position of the limiting hole.

[0011] Preferably, the inner rod is provided with an inner rod piston at the bottom position, and is provided with an outer cylinder at the outer position.

[0012] Preferably, the outer cylinder piston is provided with a third oil inlet hole at the bottom position, is provided with a fourth oil inlet hole at the right position of the top, is provided with a limiting block at the left position of the top, is provided with a first oil inlet hole at the upper position of the limiting block, is provided with a second oil inlet hole at the lower position of the limiting block, is provided with a sixth oil inlet hole at the upper position of the outer cylinder piston, and is provided with a fifth oil inlet hole at the upper position of the sixth oil inlet hole.

[0013] Preferably, the inner rod piston is in sealed connection with the outer cylinder, the inner rod and the outer cylinder are provided with hydraulic oil at the outer position, are made of stainless steel material, and are provided with a coating film at the outer position.

[0014] Compared with the prior art, the AGC servo hydraulic cylinder with a split type external sensor has the following beneficial effects:

[0015] 1、By the setting of upper protective cover, inner hole, side hole, lower protective cover, sliding groove, upper gasket, lower gasket, fixing hole, positioning piece, inner rod, limiting hole and positioning hole, the inner hole and side hole on the upper protective cover are designed as an annular array, providing better protection effect, while allowing the operator to more easily access or inspect the internal components, the sliding connection between the upper protective cover and the lower protective cover can be conveniently maintained and replaced, while also providing better sealing performance, preventing the influence of the external environment on the internal components, the sliding groove inside the hydraulic cylinder shell is used to guide the movement of the rod head, ensuring that the rod head moves accurately inside the hydraulic cylinder shell, thereby ensuring the stability and reliability of the entire system, the threaded rod at the bottom of the rod head ensures that the rod head can be firmly connected to the hydraulic cylinder shell, the upper gasket and the lower gasket act as a buffer, reducing damage caused by vibration or impact, the design of the fixing hole at the top of the inner rod and the positioning piece ensures that the inner rod can be accurately positioned inside the hydraulic cylinder shell, thereby ensuring the stability and reliability of the entire system, and the limiting hole and the positioning hole ensure that the cover shell can be fixed at the correct position, thereby ensuring the stability and reliability of the entire system.

[0016] 2、By the setting of inner rod piston, outer cylinder, outer cylinder piston, third oil inlet hole, fourth oil inlet hole, limiting block, first oil inlet hole, second oil inlet hole, sixth oil inlet hole and fifth oil inlet hole, the third oil inlet hole is used to push the inner outer cylinder, while the fourth oil inlet hole can extrude the piston at the right side of the top of the outer cylinder and retract it, such design makes the control of the equipment more flexible, and more accurate action control can be realized, hydraulic oil can enter the sixth oil inlet hole through the second oil inlet hole at the position below the limiting block, and push the inner rod to extend, at the same time, hydraulic oil can also enter the fifth oil inlet hole through the first oil inlet hole at the position above the limiting block, and push the piston at the bottom of the inner rod to extrude and retract, such design makes the energy conversion efficiency higher, and energy can be better utilized, due to the design of the inner and outer cylinders, the equipment can remain stable during work, and will not be unstable due to excessive or insufficient pressure, since each component is independent, maintenance and replacement will be more convenient, reducing maintenance time and cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the sliding groove in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the rod head in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the upper protective cover in the utility model.

[0021] Figure 5This is a schematic diagram of the cross-sectional structure of the shell in this utility model.

[0022] Figure 6 This is a schematic diagram of the inner rod piston in this utility model.

[0023] Figure 7 This is a schematic diagram of the structure of the first oil inlet hole in this utility model.

[0024] In the diagram: 1. Base; 2. Reinforcing rib; 3. Sensor; 4. Upper protective cover; 5. Rod head; 6. Cover; 7. Sensing ring; 8. Hydraulic cylinder housing; 9. Slide groove; 10. Upper gasket; 11. Inner rod; 12. Threaded rod; 13. Positioning hole; 14. Positioning component; 15. Fixing hole; 16. Lower gasket; 17. Limiting hole; 18. Inner hole; 19. Side hole; 20. Lower protective cover; 21. Limiting block; 22. First oil inlet; 23. Second oil inlet; 24. Inner rod piston; 25. Third oil inlet; 26. Servo motor; 27. Outer cylinder piston; 28. Outer cylinder; 29. ​​Fourth oil inlet; 30. Fifth oil inlet; 31. Sixth oil inlet. Detailed Implementation

[0025] 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.

[0026] This utility model provides, for example Figures 1-7 The AGC servo hydraulic cylinder shown is a split-type external sensor, including a hydraulic cylinder housing 8;

[0027] A base 1 is provided at the bottom of the hydraulic cylinder housing 8, and a reinforcing rib 2 is provided above the base 1. An inner rod 11 is provided in the middle of the interior of the hydraulic cylinder housing 8, and a rod head 5 is provided at the top of the inner rod 11. A sensor 3 is provided at the top of the hydraulic cylinder housing 8, and a sensing ring 7 is provided at the top of the sensor 3. The AGC servo hydraulic cylinder with a split external sensor is powered by an external power source.

[0028] An upper protective cover 4 is provided above the hydraulic cylinder housing 8, a lower protective cover 20 is provided at the bottom of the upper protective cover 4, and a cover 6 is provided above the upper protective cover 4.

[0029] An inner hole 18 is provided above the upper protective cover 4, and a side hole 19 is provided outside the inner hole 18. The side holes 19 are arranged in a ring array. The upper protective cover 4 and the lower protective cover 20 are slidably connected. A sliding groove 9 is provided in the middle of the interior of the hydraulic cylinder housing 8.

[0030] The threaded rod 12 is arranged at the bottom of the club head 5, the upper gasket 10 is arranged at the bottom of the club head 5, the lower gasket 16 is arranged at the bottom of the upper gasket 10, the fixing hole 15 is arranged at the middle of the top of the inner rod 11, and the positioning piece 14 is arranged at the outer side of the fixing hole 15.

[0031] The positioning piece 14 is fixedly connected with the inner rod 11, the club head 5 is threadedly connected with the inner rod 11, the cover 6 is arranged at the middle of the upper gasket 10 and the lower gasket 16, the limiting hole 17 is arranged at the middle of the inner part of the upper gasket 10 and the lower gasket 16, and the positioning hole 13 is arranged at the outer side of the limiting hole 17.

[0032] The inner rod piston 24 is arranged at the bottom of the inner rod 11, and the outer cylinder 28 is arranged at the outer side of the inner rod 11.

[0033] The third oil inlet hole 25 is arranged at the bottom of the outer cylinder piston 27, the fourth oil inlet hole 29 is arranged at the right top of the outer cylinder 28, the limiting block 21 is arranged at the left top of the outer cylinder 28, the first oil inlet hole 22 is arranged above the limiting block 21, the second oil inlet hole 23 is arranged below the limiting block 21, the sixth oil inlet hole 31 is arranged above the outer cylinder piston 27, and the fifth oil inlet hole 30 is arranged above the sixth oil inlet hole 31.

[0034] The inner rod piston 24 is sealingly connected with the outer cylinder 28, the hydraulic oil is arranged at the outer side of the inner rod 11 and the outer cylinder 28, the inner rod 11 and the outer cylinder 28 are made of stainless steel material, and the coating film is arranged at the outer side of the inner rod 11 and the outer cylinder 28.

[0035] In the embodiment, the specific implementation steps of the AGC servo hydraulic cylinder with a split type external sensor are as follows: before using the servo hydraulic cylinder, it is necessary to ensure that the equipment is in a normal working state, which includes checking whether the oil of the hydraulic system is sufficient, whether the pipelines are unobstructed, whether the control system is normal, etc., setting the working parameters of the servo hydraulic cylinder according to the specifications and requirements of the plate to be rolled, starting the servo hydraulic cylinder system including the hydraulic pump, the control system, etc., ensuring that the system runs normally without abnormal situations, monitoring the working state and feedback information of the servo hydraulic cylinder including the pressure and position of the hydraulic cylinder, adjusting the system parameters according to the real-time feedback to maintain the stable operation of the rolling mill, and during use, the upper protective cover 4 and the lower protective cover 20 move synchronously with the club head 5, the servo hydraulic cylinder automatically adjusts the working state according to the preset parameters and real-time feedback information to ensure that the plate thickness meets the requirements, and the working state of the servo hydraulic cylinder is continuously monitored during the rolling process to timely discover and handle possible abnormal situations. At the same time, regular maintenance work of the hydraulic system is carried out to ensure long-term stable operation of the equipment.

[0036] As Figures 1-4 shown, the inner hole 18 is arranged at the upper position of the upper protective cover 4, the side hole 19 is arranged at the outer side position of the inner hole 18, the upper protective cover 4 is in sliding connection with the lower protective cover 20, the sliding groove 9 is arranged at the middle position inside the hydraulic cylinder shell 8, the threaded rod 12 is arranged at the bottom position of the rod head 5, the upper gasket 10 is arranged at the bottom position of the rod head 5, the lower gasket 16 is arranged at the bottom position of the upper gasket 10, the fixed hole 15 is arranged at the top middle position of the inner rod 11, the positioning piece 14 is arranged at the outer side position of the fixed hole 15, the positioning piece 14 is in fixed connection with the inner rod 11, the rod head 5 is in threaded connection with the inner rod 11, the cover shell 6 is arranged at the middle position of the upper gasket 10 and the lower gasket 16, the limiting hole 17 is arranged at the middle position inside the upper gasket 10 and the lower gasket 16, and the positioning hole 13 is arranged in an array at the outer side of the limiting hole 17.

[0037] Preferably, the arrangement of the inner hole 18 and the side hole 19 and the array layout of the positioning hole 13 enable the components such as the upper protective cover 4, the lower protective cover 20, and the inner rod 11 to be accurately positioned and connected, ensuring the accuracy and stability of assembly, the layout design of each component being compact, space is used efficiently, which is conducive to reducing the overall size and improving the integration and performance of the assembly, the arrangement of the positioning piece 14 and the threaded connection design make the assembly and disassembly process more convenient and fast, saving labor and time cost, through the arrangement of the limiting hole 17, the movement range of the rod head 5 can be limited to prevent damage caused by exceeding the design range, improving the reliability and safety of the system, the arrangement of the cover shell 6 can effectively protect the upper gasket 10 and the lower gasket 16, prolonging their service life, reducing wear caused by friction, and improving the durability of the assembly, due to the accurate cooperation and connection of each component, the sealing performance of the hydraulic cylinder can be effectively improved to prevent hydraulic oil leakage and ensure normal operation of the system.

[0038] As Figures 5-7 shown, the inner rod piston 24 is arranged at the bottom position of the inner rod 11, the outer cylinder 28 is arranged at the outer side position of the inner rod 11, the outer cylinder piston 27 is arranged at the bottom position of the outer cylinder 28, the third oil inlet hole 25 is arranged at the bottom position of the outer cylinder piston 27, the fourth oil inlet hole 29 is arranged at the top right position of the outer cylinder 28, the limiting block 21 is arranged at the top left position of the outer cylinder 28, the first oil inlet hole 22 is arranged at the upper position of the limiting block 21, the second oil inlet hole 23 is arranged at the lower position of the limiting block 21, the sixth oil inlet hole 31 is arranged at the upper position of the outer cylinder piston 27, and the fifth oil inlet hole 30 is arranged at the upper position of the sixth oil inlet hole 31.

[0039] Preferably, the inner outer cylinder 28 is pushed through the third oil inlet hole 25, while the outer cylinder 28 is provided with a fourth oil inlet hole 29 at the top right side position, the outer cylinder piston 27 at the bottom of the outer cylinder 28 is extruded and retracted, while the hydraulic oil enters the sixth oil inlet hole 31 through the second oil inlet hole 23 below the limiting block 21, the inner rod 11 is extended, while the hydraulic oil enters the fifth oil inlet hole 30 through the first oil inlet hole 22 above the limiting block 21, the inner rod piston 24 at the bottom of the inner rod 11 is extruded and retracted.

[0040] As shown in Figures 1-7 The inner rod piston 24 is in sealing connection with the outer cylinder 28, the inner rod 11 and the outer cylinder 28 are provided with hydraulic oil at the outer side position, the inner rod 11 and the outer cylinder 28 are made of stainless steel material, and the inner rod 11 and the outer cylinder 28 are provided with a coating film at the outer side position.

[0041] Optionally, the inner rod 11 and the outer cylinder 28 made of stainless steel material have good corrosion resistance, can work stably for a long time in a humid and corrosive environment, prolong the service life, the coating film treatment can increase the hardness of the surface of the inner rod 11 and the outer cylinder 28, improve the wear resistance and durability, reduce the surface wear caused by friction, the coating film can make the surface of the inner rod 11 and the outer cylinder 28 more smooth, reduce the friction resistance when contacting the sealing element, improve the sealing performance, reduce the energy consumption, the coating film treatment can improve the wear resistance of the inner rod 11 and the outer cylinder 28 to a certain extent, reduce the surface wear and damage caused by long-term friction, prolong the service life of the hydraulic cylinder.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A split-type external sensor AGC servo hydraulic cylinder, including a hydraulic cylinder housing (8); A base (1) is provided at the bottom of the hydraulic cylinder housing (8), a reinforcing rib (2) is provided above the base (1), an inner rod (11) is provided in the middle of the interior of the hydraulic cylinder housing (8), a rod head (5) is provided at the top of the inner rod (11), a sensor (3) is provided at the top of the hydraulic cylinder housing (8), and a sensing ring (7) is provided at the top of the sensor (3). The AGC servo hydraulic cylinder with a split external sensor is powered by an external power source. Its features are: An upper protective cover (4) is provided above the hydraulic cylinder housing (8), a lower protective cover (20) is provided at the bottom of the upper protective cover (4), and a cover (6) is provided above the upper protective cover (4).

2. The AGC servo hydraulic cylinder with a split external sensor according to claim 1, characterized in that: An inner hole (18) is provided at the upper position of the upper protective cover (4), and a side hole (19) is provided at the outer position of the inner hole (18). The side holes (19) are arranged in a ring array. The upper protective cover (4) and the lower protective cover (20) are slidably connected. A sliding groove (9) is provided at the middle position inside the hydraulic cylinder housing (8).

3. The AGC servo hydraulic cylinder with a split-type external sensor according to claim 2, characterized in that: A threaded rod (12) is provided at the bottom of the rod head (5), an upper washer (10) is provided at the bottom of the rod head (5), a lower washer (16) is provided at the bottom of the upper washer (10), a fixing hole (15) is provided at the middle of the top of the inner rod (11), and a positioning element (14) is provided at the outer side of the fixing hole (15).

4. The AGC servo hydraulic cylinder with a split-type external sensor according to claim 3, characterized in that: The positioning component (14) is fixedly connected to the inner rod (11), the rod head (5) is threadedly connected to the inner rod (11), a cover (6) is provided at the middle position of the upper gasket (10) and the lower gasket (16), a limiting hole (17) is provided at the middle position inside the upper gasket (10) and the lower gasket (16), and positioning holes (13) are arranged in an array outside the limiting hole (17).

5. The AGC servo hydraulic cylinder with a split-type external sensor according to claim 1, characterized in that: An inner rod piston (24) is provided at the bottom of the inner rod (11), an outer cylinder (28) is provided at the outer side of the inner rod (11), and an outer cylinder piston (27) is provided at the bottom of the outer cylinder (28).

6. The AGC servo hydraulic cylinder with a split-type external sensor according to claim 5, characterized in that: The outer cylinder piston (27) is provided with a third oil inlet hole (25) at the bottom position, the outer cylinder (28) is provided with a fourth oil inlet hole (29) at the top right position, the outer cylinder (28) is provided with a limit block (21) at the top left position, the limit block (21) is provided with a first oil inlet hole (22) above the limit block (21), the limit block (21) is provided with a second oil inlet hole (23) below the limit block (21), the outer cylinder piston (27) is provided with a sixth oil inlet hole (31) above the outer cylinder piston (27), and the sixth oil inlet hole (31) is provided with a fifth oil inlet hole (30) above the sixth oil inlet hole (31).

7. The AGC servo hydraulic cylinder with a split-type external sensor according to claim 6, characterized in that: The inner rod piston (24) is sealed to the outer cylinder (28). Hydraulic oil is provided at the outer positions of the inner rod (11) and the outer cylinder (28). The inner rod (11) and the outer cylinder (28) are made of stainless steel. A coating is provided at the outer positions of the inner rod (11) and the outer cylinder (28).

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