A new type of AGC hydraulic cylinder

By setting a T-slot on the piston of the AGC hydraulic cylinder and combining it with a dustproof design, the problems of complex connection and safety hazards in the existing technology are solved, realizing a stable and convenient connection method, improving the stability and safety of the equipment, and extending its service life.

CN224469409UActive Publication Date: 2026-07-07BEIJING JINZI TIANCHENG HYDRAULIC TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING JINZI TIANCHENG HYDRAULIC TECH
Filing Date
2025-02-20
Publication Date
2026-07-07

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    Figure CN224469409U_ABST
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Abstract

The utility model provides a novel AGC hydraulic cylinder, including piston, pressure -bearing pad and connecting screw, be equipped with T type groove with pressure -bearing pad adaptation on the piston, the pressure -bearing pad places in T type groove, and is fastened through connecting screw, the utility model has shown the new connection mode of piston and pressure -bearing pad in AGC hydraulic cylinder, places the T type groove set up on the piston in pressure -bearing pad, fastens it through connecting screw, when pressure -bearing pad and T type groove adaptation, definite cooperation gap is reserved between both, improve the convenience of installation and dismounting while strengthening the stability of connection, not only make the service time of AGC hydraulic cylinder on machine improve, reduce maintenance time, reduce use cost, but also eliminate the security risk, convenient installation and dismounting simultaneously.
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Description

Technical Field

[0001] This utility model relates to the field of AGC hydraulic cylinder technology, specifically a novel AGC hydraulic cylinder. Background Technology

[0002] In the hot-rolled strip steel production process, AGC hydraulic cylinders (automatic control hydraulic cylinders) play a crucial role as key hydraulic components in the finishing mill. Especially in the finishing mill, the design and performance of the AGC hydraulic cylinders directly affect rolling accuracy, production efficiency, and equipment reliability. Currently, AGC hydraulic cylinders in my country mainly adopt an upper-mounted structure, with the pressure pad fastened to the upper end face of the piston by screws to fix the piston in the equipment.

[0003] However, existing hydraulic cylinder structures have some problems, especially when bearing the weight of the AGC hydraulic cylinder itself, as well as radial forces generated by off-center loading and abnormal impacts from the rolling mill. The screw connection method not only makes installation and maintenance complex but also poses potential safety hazards. These problems not only increase the difficulty of equipment maintenance but may also reduce the reliability of the hydraulic cylinder during long-term operation, thus affecting production efficiency and equipment lifespan. Therefore, a new AGC hydraulic cylinder design is urgently needed to improve the shortcomings of the existing structure and enhance the stability, safety, and ease of operation of the hydraulic cylinder. Utility Model Content

[0004] The purpose of this invention is to provide a novel AGC hydraulic cylinder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The piston has a T-groove adapted to the pressure pad, the T-groove having a height, a width 1, and a width 2; the pressure pad has a width 1, a height, and a width 2.

[0007] The pressure pad is placed in the T-slot and secured by the connecting screw.

[0008] Preferably, the T-slot and the pressure pad are adapted to each other, the height of the pressure pad is less than the height of the T-slot, and there is a gap 2 between the height of the pressure pad and the height of the T-slot, and dustproof treatment is performed in the gap 2.

[0009] Preferably, the T-slot and the pressure pad are adapted to each other, the width of the pressure pad is smaller than the width of the T-slot, and there is a gap between the width of the pressure pad and the width of the T-slot, and the gap is treated to prevent dust.

[0010] Preferably, the T-slot and the pressure pad are adapted to each other, and there is a gap between the width of the pressure pad and the width of the T-slot.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model provides a novel AGC hydraulic cylinder structural design, employing a completely new connection method between the piston and the pressure pad. By setting a T-slot on the piston and placing the pressure pad within the T-slot, and then securing it with connecting screws, a more stable and convenient connection method is formed. Specifically, the fit between the pressure pad and the T-slot is more precise, while a certain clearance is reserved between them, thereby achieving the following beneficial effects:

[0013] 1. Improved connection stability: Through the precise fit between the T-slot and the pressure pad, the connection between the pressure pad and the piston of the hydraulic cylinder is more secure, which effectively enhances the hydraulic cylinder's ability to withstand axial and radial forces during operation and improves the overall structural stability.

[0014] 2. Improved ease of installation and disassembly: Due to the simplified connection between the piston and the pressure pad, the hydraulic cylinder is easier to install and disassemble, reducing the difficulty of installation and maintenance, thereby saving a lot of time and labor costs.

[0015] 3. Increased service life of hydraulic cylinders: Due to the more stable connection, AGC hydraulic cylinders can withstand greater impact and working pressure during operation, thereby reducing wear caused by unstable connections and extending the service life of hydraulic cylinders.

[0016] 4. Reduced maintenance costs: The innovative connection structure reduces the need for frequent maintenance due to loose connections, lowers the equipment failure rate, and thus reduces maintenance and downtime, thereby reducing operating costs.

[0017] 5. Eliminate safety hazards: The new connection method is more uniform and stable when subjected to external forces and impacts, effectively reducing safety hazards caused by loose screws or unstable connections, and improving the reliability and safety of the equipment.

[0018] 6. Dustproof design: Dustproof treatment is carried out in the connection gap, which can effectively prevent external contaminants from entering, ensure the cleanliness of the inside of the hydraulic cylinder, and avoid affecting its normal operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the T-slot structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the pressure-bearing pad structure of this utility model.

[0022] In the diagram: 1. Piston; 2. Pressure pad; 3. Connecting screw; 4. Gap 1; 5. Gap 2; 6. Gap 3; 7. T-slot height; 8. T-slot; 9. T-slot width 1; 10. T-slot width 2; 11. Pressure pad width 1; 12. Pressure pad height; 13. Pressure pad width 2. Detailed Implementation

[0023] 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.

[0024] Example:

[0025] Please see Figures 1 to 3 This utility model provides a technical solution:

[0026] A novel AGC hydraulic cylinder includes a piston 1, a pressure pad 2, and a connecting screw 3. The piston 1 is provided with a T-groove 8 that is adapted to the pressure pad 2. The pressure pad 2 is placed in the T-groove 8 and fastened by the connecting screw 3.

[0027] Specifically, the T-slot 8 includes a T-slot height 7, a T-slot width 9, and a T-slot width 10; the pressure pad 2 includes a pressure pad width 11, a pressure pad height 12, and a pressure pad width 13.

[0028] Specifically, the T-slot 8 and the pressure pad 2 are adapted to each other. The height 12 of the pressure pad is less than the height 7 of the T-slot, and there is a gap 2 5 between the height 12 of the pressure pad and the height 7 of the T-slot. Dustproof treatment is carried out in the gap 2 5. The gap 2 5 is about 0.5mm to 1mm, which is used to improve the ease of installation and disassembly. The dustproof pad prevents dust from entering the gap 2 5 and avoids accelerated wear between the parts.

[0029] Specifically, the T-slot 8 and the pressure pad 2 are adapted to each other. The width of the pressure pad 13 is smaller than the width of the T-slot 10, and there is a gap 6 between the width of the pressure pad 13 and the width of the T-slot 10. The gap 6 is dustproofed and is approximately 0.5mm to 1mm. This is to improve the ease of installation and disassembly. The dustproof pad prevents dust from entering the gap 6 and avoids accelerated wear between components.

[0030] Specifically, the T-slot 8 and the pressure pad 2 are adapted to each other. There is a gap 4 between the width of the pressure pad -11 and the width of the T-slot -9. The gap 4 is approximately within 0.1mm, which is used to improve the ease of installation and disassembly.

[0031] During installation, the pressure pad 2 is placed in the T-slot 8 on the piston 1 and secured with connecting screws 3. For ease of installation and disassembly, clearances of approximately 0.5mm to 1mm are provided between the pressure pad height 12 and the T-slot height 7, and between the pressure pad width 13 and the T-slot width 10, including clearance 5 and clearance 6. The clearance between the pressure pad width 11 and the T-slot width 9 is clearance 4, which is approximately 0.1mm or less. Dustproof treatment is applied to clearances 5 and 6 to prevent accelerated wear between components. This embodiment of the AGC hydraulic cylinder design ensures efficient operation of the hydraulic system while significantly improving the service life of the hydraulic cylinder, reducing maintenance costs, and enhancing the safety and stability of the equipment, thus meeting the high requirements of the modern steel industry for hydraulic systems.

[0032] The AGC hydraulic cylinder of this invention mainly includes a piston, a pressure pad, and connecting screws. During operation, the pressure pad is tightly engaged with the piston via a T-slot, and the connecting screws secure the pressure pad to the piston, forming a stable connection structure. During operation, the piston is driven by hydraulic force, causing the pressure pad to move. Simultaneously, the connection structure between the piston and the pressure pad is stable and can withstand the axial and radial forces generated during the operation of the hydraulic cylinder.

[0033] In this embodiment, there are certain fitting clearances (clearance one, clearance two, and clearance three) between the T-slot and the pressure pad. These clearances are designed to facilitate installation and disassembly, while preventing wear of components due to friction or contaminant ingress. During the operation of the hydraulic cylinder, the height and width of the pressure pad and the fitting design of the T-slot ensure that the pressure pad can be stably fixed in the slot and effectively withstand external forces. Especially with certain clearances, it can effectively mitigate the impact of external forces and prevent damage to connecting components.

[0034] Meanwhile, a dustproof pad is used in the gap between the T-slot and the pressure pad to prevent external dust or impurities from entering the component, protect the cleanliness of the hydraulic system, reduce component wear, and effectively extend the service life of the equipment.

[0035] The advantages of this embodiment are as follows:

[0036] The ease of installation and disassembly is improved by the design of the fit clearance between the piston and the pressure pad, which makes the pressure pad easier to install and remove. In particular, the reserved gaps between gap two (5) and gap three (6) not only improve the convenience of component installation, but also prevent damage to the components during disassembly.

[0037] Enhanced connection stability is ensured by the precise fit between the T-slot and the pressure pad. When the hydraulic cylinder operates, it effectively withstands the axial and radial forces generated by the hydraulic system, preventing the AGC hydraulic cylinder from loosening or shifting during operation and improving system stability.

[0038] To reduce wear and extend service life, a dustproof pad is used in the fit gap between the T-slot and the pressure pad to prevent dust and impurities from entering, reducing friction between parts, avoiding accelerated wear, and thus extending the service life of the hydraulic cylinder.

[0039] This invention reduces maintenance costs by optimizing the connection method, thereby decreasing the need for frequent maintenance due to unstable connections or installation difficulties. This reduces equipment failure rates, downtime, and maintenance costs. The stability and long lifespan of the hydraulic cylinder further lower overall operating and maintenance costs.

[0040] Improving the reliability and safety of hydraulic systems, the hydraulic cylinder can better maintain its structural integrity when subjected to external impacts and vibrations due to the more stable connection between the pressure pad and the piston. This eliminates potential safety hazards caused by improper connections and ensures the efficient operation of the hydraulic system.

[0041] To meet the high requirements of the modern steel industry, the design of this utility model effectively improves the performance of the hydraulic cylinder, enabling it to withstand high loads and work stably for a long time. It meets the requirements of the modern steel industry for high reliability, high efficiency and low maintenance of hydraulic systems, and is particularly suitable for use in high-load and long-term operating environments.

[0042] In summary, this utility model's AGC hydraulic cylinder, through improved connection structure and the introduction of dustproof design, enhances the stability, safety, and convenience of the hydraulic cylinder, greatly extends the service life of the equipment, reduces maintenance costs, and meets the stringent requirements of modern industry for hydraulic systems.

[0043] All other parts of this utility model not described herein are the same as existing technologies, or are known technologies, or can be implemented using existing technologies, and will not be described in detail here.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel AGC hydraulic cylinder, characterized in that: include: The piston (1) is provided with a T-groove (8) adapted to the pressure pad (2). The T-groove (8) includes a T-groove height (7), a T-groove width one (9), and a T-groove width two (10). The pressure pad (2) includes a pressure pad width one (11), a pressure pad height (12), and a pressure pad width two (13). The pressure pad (2) is placed in the T-slot (8) and fastened by the connecting screw (3).

2. The novel AGC hydraulic cylinder according to claim 1, characterized in that: The T-groove (8) and the pressure pad (2) are adapted to each other. The height of the pressure pad (12) is less than the height of the T-groove (7), and there is a gap (5) between the height of the pressure pad (12) and the height of the T-groove (7), and dustproof treatment is carried out in the gap (5).

3. A novel AGC hydraulic cylinder according to claim 2, characterized in that: The T-groove (8) and the pressure pad (2) are adapted to each other. The width of the pressure pad (13) is smaller than the width of the T-groove (10). There is a gap (6) between the width of the pressure pad (13) and the width of the T-groove (10), and the gap (6) is dustproofed.

4. A novel AGC hydraulic cylinder according to claim 3, characterized in that: The T-groove (8) and the pressure pad (2) are adapted to each other, and there is a gap (4) between the width of the pressure pad (11) and the width of the T-groove (9).