Double drive parallel hydraulic cylinder

Abstract

The utility model discloses a kind of double-drive parallel hydraulic oil cylinder, it is related to hydraulic oil cylinder technical field, including two cylinder bodies, the top of two cylinder bodies is uniformly connected with top cover with fixed connection, the bottom of two cylinder bodies is uniformly connected with base with fixed connection, the inside of two cylinder bodies is uniformly slidably connected with piston main body, the inside of two top covers is uniformly slidably connected with telescopic column, the bottom of telescopic column is fixedly connected with the top of piston main body, the inside of two cylinder bodies is equipped with intercommunication component, buffer component is equipped between two cylinder bodies, intercommunication component and buffer component are used mutually cooperation. The utility model discloses a kind of double-drive parallel hydraulic oil cylinder, by the intercommunication component being set, double-cylinder synchronous motion can be made, after single cylinder body failure, another cylinder body can also support object, avoid appearing safety hazard, simultaneously, buffer component can avoid rigid impact damage structure, prolong equipment service life, simple structure, stronger practicality.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a dual-drive parallel hydraulic cylinder. Background Technology

[0002] With the increasing demands for reliability in hydraulic systems from fields such as engineering machinery and aerospace, traditional single-cylinder hydraulic actuators can no longer meet the performance requirements under special working conditions. In applications such as tunnel boring machine propulsion systems and wind turbine pitch control mechanisms, hydraulic cylinders are required to provide above-rated output thrust while also possessing fault redundancy capabilities to ensure continuous system operation. Furthermore, precision manufacturing equipment places higher standards on the synchronization accuracy and anti-eccentric load capabilities of hydraulic actuators, necessitating the development of new hydraulic drive structures.

[0003] Most existing hydraulic cylinders are single-cylinder configurations, meaning that a single cylinder is used for drive and support. In actual use, hydraulic fluid is injected into the hydraulic cylinder, and the injection of hydraulic fluid lifts the piston, thereby supporting the object.

[0004] Based on the aforementioned technologies, the applicant believes that when a single piston cylinder supports an object, if the single piston rod fails, the supported object will overturn. The lack of backup support poses a safety hazard. To address the above issues, we have developed a dual-drive parallel hydraulic cylinder. Utility Model Content

[0005] This utility model discloses a dual-drive parallel hydraulic cylinder, which aims to solve the technical problem that when a single piston cylinder supports an object, if the single piston rod fails, the supported object will overturn, and there is a lack of backup support, which poses a safety hazard.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual-drive parallel hydraulic cylinder includes two cylinder bodies. A top cover is fixedly connected to the top of each cylinder body, and a base is fixedly connected to the bottom of each cylinder body. A piston body is slidably connected inside each cylinder body. A telescopic column is slidably connected inside each of the top covers, with the bottom of the telescopic column fixedly connected to the top of the piston body. A communication assembly is provided inside each of the two cylinder bodies, and a buffer assembly is provided between the two cylinder bodies. The communication assembly and the buffer assembly cooperate with each other. The communication assembly includes a communication plate fixedly connected between the two cylinder bodies. A communication groove is formed inside the communication plate. Through grooves are formed on the sides of each of the two bases that are close to each other, and the through grooves and the communication grooves are connected. A mounting head is fixedly connected to the front of the communication plate, and a solenoid valve is provided inside the mounting head. The mounting head extends into the communication groove and cooperates with it.

[0008] By using the connecting components, the two cylinders can move synchronously, preventing the other cylinder from supporting the object even if one cylinder fails, thus avoiding safety hazards.

[0009] In a preferred embodiment, the buffer assembly includes a parallel plate fixedly connected between two cylinders and located above a connecting plate. A sliding column is symmetrically slidably connected inside the parallel plate. A fixed column is fixedly connected to the top of the connecting plate. A buffer spring is sleeved on the outer side of the fixed column. The top of the fixed column is fixedly connected to the bottom of the parallel plate. A limit plate is fixedly connected to the outer side of the fixed column and above the buffer spring. Connecting plates are fixedly connected to the outer sides of both telescopic columns. The bottom of the connecting plate is fixedly connected to the top of the sliding column.

[0010] Buffer components can prevent rigid impacts from damaging the structure, extend the service life of equipment, and have a simple structure and strong practicality.

[0011] In a preferred embodiment, the tops of both telescopic columns are fixedly connected to connectors, and the bottoms of both bases are fixedly connected to mounting seats.

[0012] The connector at the top of the telescopic column and the mounting base at the bottom provide standardized interfaces, facilitating quick installation of the hydraulic cylinder with external equipment. The connection hole design enhances adaptability and is suitable for the installation needs of different engineering machinery.

[0013] In a preferred embodiment, the tops of both bases are fixedly connected to a reinforcing rod in a rectangular shape, and the tops of the reinforcing rods are fixedly installed to the top cover by nuts.

[0014] The reinforcing rod connects the base and the top cover to form a rigid frame structure, which improves the overall bending strength of the cylinder body, prevents the dual cylinders from deforming under high loads, and ensures long-term operational stability.

[0015] In a preferred embodiment, a dust removal ring is provided on the outer side of each of the two telescopic columns, the dust removal ring being slidably connected to the telescopic column, and the bottom of the dust removal ring being fixedly connected to the top of the top cover.

[0016] The dust collector ring slides in conjunction with the telescopic column, effectively preventing external dust from entering the cylinder, reducing wear on the piston seals, and lowering the maintenance frequency. It is especially suitable for harsh working conditions such as mines and construction.

[0017] In a preferred embodiment, both of the connectors and the two mounting bases have connection holes inside for connecting the cylinder to external equipment.

[0018] The connector and mounting base have through-hole designs, allowing for bolt fixing, enhancing installation flexibility, and reducing additional stress caused by installation errors.

[0019] The dual-drive parallel hydraulic cylinder provided by this utility model has the following advantages:

[0020] Firstly, the connecting components allow the two cylinders to move synchronously, ensuring that even if one cylinder fails, the other cylinder can still support the object, thus preventing safety hazards. At the same time, the buffer components can prevent rigid impacts from damaging the structure, extending the service life of the equipment. The structure is simple and highly practical.

[0021] Secondly, the connector at the top of the telescopic column and the mounting base at the bottom provide standardized interfaces, facilitating quick installation of the cylinder with external equipment. The connection hole design enhances adaptability, suitable for the installation needs of various engineering machinery. A reinforcing rod connects the base and top cover, forming a rigid frame structure, improving the overall bending strength of the cylinder body, preventing deformation of the dual cylinders under high loads, and ensuring long-term operational stability. The dust collector ring slides with the telescopic column, effectively preventing external dust from entering the cylinder body, reducing piston seal wear, and lowering maintenance frequency, making it particularly suitable for harsh working conditions such as mining and construction. The connection holes of the connector and mounting base adopt a through-hole design, allowing for bolt fixing, enhancing installation flexibility, and reducing additional stress caused by installation errors. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a dual-drive parallel hydraulic cylinder proposed in this utility model.

[0023] Figure 2 This is a front view schematic diagram of a dual-drive parallel hydraulic cylinder proposed in this utility model.

[0024] Figure 3 This is a three-dimensional cross-sectional view of a dual-drive parallel hydraulic cylinder proposed in this utility model.

[0025] Figure 4 This utility model proposes a dual-drive parallel hydraulic cylinder Figure 3 A magnified diagram of point A.

[0026] In the attached diagram: 1. Cylinder body; 2. Top cover; 3. Base; 4. Piston body; 5. Telescopic column; 6. Connecting hole; 71. Fixed column; 72. Parallel plate; 73. Buffer spring; 74. Sliding column; 75. Connecting plate; 76. Limiting plate; 81. Connecting plate; 82. Connecting groove; 83. Through groove; 84. Mounting head; 9. Connecting head; 10. Mounting seat; 11. Reinforcing rod; 12. Dust removal ring. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] The dual-drive parallel hydraulic cylinder disclosed in this utility model is mainly used in hydraulic cylinder application scenarios.

[0029] Reference Figures 1-4 A dual-drive parallel hydraulic cylinder includes two cylinder bodies 1. A top cover 2 is fixedly connected to the top of each cylinder body 1, and a base 3 is fixedly connected to the bottom of each cylinder body 1. A piston body 4 is slidably connected inside each cylinder body 1. A telescopic column 5 is slidably connected inside each top cover 2, with the bottom of the telescopic column 5 fixedly connected to the top of the piston body 4. A communication assembly is provided inside each cylinder body 1, and a buffer assembly is provided between the two cylinder bodies 1. The communication assembly and the buffer assembly cooperate with each other. The communication assembly includes a communication plate 81, which is fixedly connected between the two cylinder bodies 1. A communication groove 82 is opened inside the communication plate 81. A through groove 83 is opened on the side of each base 3 that is close to each other, and the through groove 83 and the communication groove 82 are connected. An mounting head 84 is fixedly connected to the front of the communication plate 81, and a solenoid valve is provided inside the mounting head 84. The mounting head 84 extends into the communication groove 82 and cooperates with it. The buffer assembly includes a parallel plate 72, which is fixedly connected between the two cylinders 1 and located above the connecting plate 81. A sliding column 74 is symmetrically slidably connected inside the parallel plate 72. A fixed column 71 is fixedly connected to the top of the connecting plate 81. A buffer spring 73 is sleeved on the outside of the fixed column 71. The top of the fixed column 71 is fixedly connected to the bottom of the parallel plate 72. A limit plate 76 is fixedly connected to the outside of the fixed column 71 and above the buffer spring 73. A connecting plate 75 is fixedly connected to the outside of each of the two telescopic columns 5. The bottom of the connecting plate 75 is fixedly connected to the top of the sliding column 74.

[0030] In this embodiment, hydraulic oil is injected into the bottom of the two cylinders 1 through an external pump station, pushing the piston body 4 upward and causing the telescopic column 5 to extend, thereby outputting thrust. When the load on the two cylinders is uneven, the solenoid valve of the connecting component regulates the flow of oil in the connecting groove 82, so that the pressure of the two cylinders is automatically balanced, ensuring synchronous operation. If a single cylinder loses pressure due to a fault, the solenoid valve can cut off the connecting groove 82, allowing the other cylinder to work independently and maintain basic functions. When the telescopic column 5 moves, the buffer spring 73 and the sliding column 74 of the buffer component absorb vibration. Through the connecting component, the two cylinders can move synchronously, preventing the other cylinder 1 from supporting the object after the failure of a single cylinder 1, thus avoiding safety hazards. At the same time, the buffer component can prevent rigid impact from damaging the structure, extending the service life of the equipment. The structure is simple and highly practical.

[0031] In the above technical solution, considering the problem that if a single piston rod fails when supporting an object with a single piston cylinder, the supported object will tip over, and the lack of backup support poses a safety hazard, the specific operation is as follows:

[0032] Reference Figures 1-4 In a preferred embodiment, each of the two telescopic columns 5 has a connector 9 fixedly connected to its top, and each of the two bases 3 has a mounting base 10 fixedly connected to its bottom. Each of the two bases 3 has a rectangular reinforcing rod 11 fixedly connected to its top, and the top of the reinforcing rod 11 is fixedly installed to the top cover 2 with a nut. Each of the two telescopic columns 5 has a dust removal ring 12 on its outer side, which is slidably connected to the telescopic column 5, and its bottom is fixedly connected to the top of the top cover 2. Both connectors 9 and the two mounting bases 10 have connection holes 6 for connecting the hydraulic cylinder to external equipment.

[0033] In this embodiment, the connector 9 at the top of the telescopic column 5 and the mounting base 10 at the bottom of the base 3 provide standardized interfaces, facilitating quick installation of the cylinder with external equipment. The connection hole 6 is designed to enhance adaptability, suitable for the installation needs of different engineering machinery. The reinforcing rod 11 connects the base 3 and the top cover 2, forming a rigid frame structure, improving the overall bending strength of the cylinder body 1, preventing deformation of the dual cylinders under high loads, and ensuring long-term operational stability. The dust removal ring 12 slides with the telescopic column 5, effectively preventing external dust from entering the cylinder body 1, reducing piston seal wear, and lowering maintenance frequency, especially suitable for harsh working conditions such as mining and construction. The connection hole 6 of the connector 9 and the mounting base 10 adopts a through-hole design, allowing bolt fixing, enhancing installation flexibility, and reducing additional stress caused by installation errors.

[0034] Working principle: When this dual-drive parallel hydraulic cylinder is working, hydraulic oil is injected into the bottom of the two cylinders 1 through an external pump station, pushing the piston body 4 upward and causing the telescopic column 5 to extend, thereby outputting thrust. When the load on the two cylinders is uneven, the solenoid valve of the connecting component regulates the flow of oil in the connecting groove 82, so that the pressure of the two cylinders is automatically balanced, ensuring synchronous operation. If a single cylinder loses pressure due to a fault, the solenoid valve can cut off the connecting groove 82, allowing the other cylinder to work independently and maintain basic functions. When the telescopic column 5 moves, the buffer spring 73 and slide column 74 of the buffer component absorb vibration and prevent rigid impact from damaging the structure. The dust removal ring 12 blocks external contaminants and keeps the inside of the cylinder clean. The reinforcing rod 11 and the parallel plate 72 enhance the overall rigidity and ensure that the two cylinders work together under high load. Finally, the driving force is transmitted to the external equipment through the connector 9 and the mounting base 10.

[0035] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A dual-drive parallel hydraulic cylinder, comprising two cylinder bodies (1), characterized in that: A top cover (2) is fixedly connected to the top of each of the two cylinders (1), a base (3) is fixedly connected to the bottom of each of the two cylinders (1), a piston body (4) is slidably connected inside each of the two cylinders (1), a telescopic column (5) is slidably connected inside each of the two top covers (2), the bottom of the telescopic column (5) is fixedly connected to the top of the piston body (4), a communication component is provided inside each of the two cylinders (1), and a buffer component is provided between the two cylinders (1). The communication component and the buffer component are used in cooperation with each other. The connecting component includes a connecting plate (81), which is fixedly connected between the two cylinders (1). A connecting groove (82) is provided inside the connecting plate (81). A through groove (83) is provided on the side of each of the two bases (3) that are close to each other. The through groove (83) and the connecting groove (82) are connected. An mounting head (84) is fixedly connected to the front of the connecting plate (81). A solenoid valve is provided inside the mounting head (84). The mounting head (84) extends into the interior of the connecting groove (82) and is used in conjunction with it.

2. The dual-drive parallel hydraulic cylinder according to claim 1, characterized in that: The buffer assembly includes a parallel plate (72), which is fixedly connected between two cylinders (1) and located above the connecting plate (81). The parallel plate (72) is symmetrically slidably connected with sliding columns (74). The top of the connecting plate (81) is fixedly connected with a fixing column (71). A buffer spring (73) is sleeved on the outside of the fixing column (71). The top of the fixing column (71) is fixedly connected to the bottom of the parallel plate (72). A limit plate (76) is fixedly connected on the outside of the fixing column (71) and above the buffer spring (73). A connecting plate (75) is fixedly connected on the outside of both telescopic columns (5). The bottom of the connecting plate (75) is fixedly connected to the top of the sliding column (74).

3. A dual-drive parallel hydraulic cylinder according to claim 1, characterized in that: The tops of the two telescopic columns (5) are fixedly connected with connectors (9), and the bottoms of the two bases (3) are fixedly connected with mounting bases (10).

4. A dual-drive parallel hydraulic cylinder according to claim 1, characterized in that: The tops of the two bases (3) are fixedly connected with reinforcing rods (11) in a rectangular shape, and the tops of the reinforcing rods (11) are fixedly installed with the top cover (2) by nuts.

5. A dual-drive parallel hydraulic cylinder according to claim 1, characterized in that: Dust removal rings (12) are provided on the outer sides of both telescopic columns (5). The dust removal rings (12) are slidably connected to the telescopic columns (5), and the bottom of the dust removal rings (12) is fixedly connected to the top of the top cover (2).

6. A dual-drive parallel hydraulic cylinder according to claim 3, characterized in that: Both of the connectors (9) and the two mounting bases (10) have connection holes (6) inside for connecting the cylinder to external equipment.

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