Hydraulic cylinder with protection structure
By designing a detachable protective structure and auxiliary stabilizing components, the problems of easy damage to hydraulic cylinders and unstable oil pipe joints are solved, achieving efficient protection and stable connection of hydraulic cylinders and reducing replacement costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINYI HONGNENG MACHINERY CO LTD
- Filing Date
- 2025-09-18
- Publication Date
- 2026-07-21
AI Technical Summary
Existing hydraulic cylinders lack effective protective structures, are susceptible to impact damage, and have unstable oil pipe connections, leading to oil leaks and high replacement costs.
A detachable protective structure is designed, including first and second mounting sleeves, a protective rod, and auxiliary stabilizing components, which are connected by threaded joints and studs to protect and stabilize the hydraulic cylinder and hydraulic pipe joint.
It improves the impact resistance of hydraulic cylinders, reduces replacement costs, ensures stable connection of oil pipe joints, avoids oil leakage, and enhances the reliability of hydraulic drive.
Smart Images

Figure CN224533133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinders, and in particular to a hydraulic cylinder with a protective structure. Background Technology
[0002] It is the core actuator in a hydraulic system, converting hydraulic energy into mechanical energy to achieve linear reciprocating motion or oscillation. It is widely used in engineering machinery, industrial equipment, aerospace and other fields. During operation, hydraulic oil is delivered to the main body of the hydraulic cylinder by the hydraulic pump. Under the action of the hydraulic oil, the piston rod moves, thereby driving the corresponding mechanical movement.
[0003] In existing hydraulic cylinder structures, the cylinder body typically lacks external protective structures after installation. This makes it highly susceptible to damage during operation in the event of a collision, thus affecting normal drive. In some hydraulic cylinders with protective covers, the cover is a single, integral structure that cannot be replaced locally. If it fails, the entire cylinder must be replaced, resulting in high replacement costs. Furthermore, the protective cover only provides impact protection and cannot provide auxiliary fixation for the connected oil pipe joints. These joints are prone to loosening under stress, leading to oil leaks. Utility Model Content
[0004] The main objective of this invention is to provide a hydraulic cylinder with a protective structure, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A hydraulic cylinder with a protective structure includes a cylinder body, a connecting seat fixed at the lower end of the cylinder body, a piston rod on the cylinder body, a first connecting hole on the connecting seat, a second connecting hole at the upper end of the cylinder body, and a protective structure on the cylinder body.
[0006] Preferably, the lower end of the connecting seat is provided with a first rotating seat, and the upper end of the piston rod is fixed with a second rotating seat.
[0007] Preferably, the protective structure includes a first mounting sleeve, a second mounting sleeve, a connecting block, a circular hole, a first protective rod, a threaded joint, a second protective rod, a stud, an auxiliary stabilizing component, and a connecting screw hole. The first and second mounting sleeves are fitted onto the cylinder body. The connecting block is fixed to the ends of the first and second mounting sleeves. The circular hole is formed on the second mounting sleeve. The first protective rod and the threaded joint are fixedly connected, and the first protective rod passes through the circular hole. The threaded joint is connected to the first mounting sleeve. The connecting screw hole is formed on the second mounting sleeve. The second protective rod and the stud are fixedly connected, and the stud is connected in the connecting screw hole. The auxiliary stabilizing component is installed on the first and second mounting sleeves.
[0008] Preferably, the first mounting sleeve is provided with a threaded groove, the threaded connector is connected to the threaded groove on the first mounting sleeve, the connecting block is provided with a through hole, and a mounting bolt is provided in the through hole on the connecting block, and a nut is provided at the end of the mounting bolt.
[0009] Preferably, the auxiliary stabilizing component includes a fixing plate, a clamping plate, a guide rod, and a clamping screw. The fixing plate is provided with a through hole and an adjustment hole. The clamping plate is connected to the guide rod, and the guide rod passes through the through hole on the fixing plate. The clamping screw is threaded into the adjustment hole, and the end of the clamping screw abuts against the clamping plate.
[0010] Compared with the prior art, the present invention has the following beneficial effects: The hydraulic cylinder with a protective structure, through the setting of the protective structure, adopts a detachable first mounting sleeve and a second mounting sleeve, which are used in conjunction with the first protective rod and the second protective rod, so that the entire protective structure can be quickly disassembled and installed, making it highly convenient to operate. The detachable design of the first and second protective rods means that if one of them is damaged, it can be replaced individually without replacing the entire protective structure, reducing the cost of use. Individual replacement can also shorten the time and ensure the replacement rate. The auxiliary stabilizing components set on the first and second mounting sleeves can play an auxiliary clamping role for the connected oil pipe joint, increasing the connection stability of the oil pipe joint, avoiding loosening and oil leakage, and ensuring the effectiveness of hydraulic drive. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the main body of the hydraulic cylinder of this utility model; Figure 3 This is a schematic diagram of the protective structure of this utility model; Figure 4 This is a schematic diagram of the structure of the auxiliary stabilizing component of this utility model.
[0012] In the diagram: 1. Cylinder body; 2. Connecting seat; 3. Piston rod; 4. First connecting hole; 5. Second connecting hole; 6. Protective structure; 601. First mounting sleeve; 602. Second mounting sleeve; 603. Connecting block; 604. Round hole; 605. First protective rod; 606. Threaded joint; 607. Second protective rod; 608. Stud; 609. Auxiliary stabilizing component; 6091. Fixing plate; 6092. Clamping plate; 6093. Guide rod; 6094. Clamping screw; 610. Connecting screw hole; 7. First rotating seat; 8. Second rotating seat. Detailed Implementation
[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0014] like Figures 1-4 As shown, a hydraulic cylinder with a protective structure includes a cylinder body 1, a connecting seat 2 fixed to the lower end of the cylinder body 1, and a piston rod 3 provided on the cylinder body 1. The connecting seat 2 has a first connecting hole 4, and the upper end of the cylinder body 1 has a second connecting hole 5. A protective structure 6 is provided on the cylinder body 1. A first rotating seat 7 is provided at the lower end of the connecting seat 2, and a second rotating seat 8 is fixed to the upper end of the piston rod 3.
[0015] During installation of the hydraulic cylinder, the basic installation is performed via the first rotating seat 7 on the connecting seat 2. The second rotating seat 8 at the end of the piston rod 3 is then mechanically connected. The first connecting hole 4 and the second connecting hole 5 are connected to the oil pipe connector. After the protective structure 6 is installed on the outside of the cylinder body 1, it is put into use. During use, under the action of the hydraulic pump, hydraulic oil is delivered to the cylinder body 1 through the oil pipe, thereby driving the piston and piston rod 3 to extend and retract, thus carrying the corresponding mechanical movement. The protective structure 6 serves as an anti-collision protection, effectively protecting the hydraulic cylinder from impact damage and ensuring its integrity.
[0016] According to the above implementation scheme, the protective structure 6 includes a first mounting sleeve 601, a second mounting sleeve 602, a connecting block 603, a round hole 604, a first protective rod 605, a threaded joint 606, a second protective rod 607, a stud 608, an auxiliary stabilizing component 609, and a connecting screw hole 610. The first mounting sleeve 601 and the second mounting sleeve 602 are sleeved on the cylinder body 1. The connecting block 603 is fixed to the ends of the first mounting sleeve 601 and the second mounting sleeve 602. The round hole 604 is opened on the second mounting sleeve 602. The first protective rod 605 and the threaded joint 606 are fixedly connected, and the first protective rod 605 passes through the round hole 604. The threaded joint 606 is connected to the first mounting sleeve 601. The connecting screw hole 610 is opened on the second mounting sleeve 602. The second protective rod 607 and the stud 608 are fixedly connected, and the stud 608 is connected in the connecting screw hole 610. The auxiliary stabilizing component 609 is installed on the first mounting sleeve 601 and the second mounting sleeve 602. The first mounting sleeve 601 is provided with a threaded groove, and the threaded connector 606 is connected to the threaded groove on the first mounting sleeve 601. The connecting block 603 is provided with a through hole, and the through hole on the connecting block 603 is provided with a mounting bolt, and the end of the mounting bolt is provided with a nut.
[0017] When installing the protective structure 6, two first mounting sleeves 601 and two second mounting sleeves 602 are fitted onto the cylinder body 1, ensuring that the round hole 604 is aligned with the threaded groove. The mounting screws are inserted into the through holes on the connecting block 603, and nuts are placed at the ends of the mounting bolts to secure the mounting sleeves. Then, the first protective rod 605 is inserted through the round hole 604, and the threaded connector 606 is connected to the threaded groove, completing the installation of the first protective rod 605. The stud 608 at the end of the second protective rod 607 is screwed into the connecting screw hole 610, completing the installation of the second protective rod 607. After connecting the oil pipe connector, the auxiliary stabilizing component 609 is operated to fix it onto the oil pipe connector, providing additional heat. During use, the first protective rod 605 and the second protective rod 607 provide anti-collision protection, while the auxiliary stabilizing component 609 secures the oil pipe connector, ensuring the connection stability of the oil pipe connector. When the protective rod is damaged, it can be disassembled and replaced individually, making the operation convenient and quick.
[0018] The auxiliary stabilizing component 609 includes a fixing plate 6091, a clamping plate 6092, a guide rod 6093, and a clamping screw 6094. The fixing plate 6091 is provided with a through hole and an adjustment hole. The clamping plate 6092 is connected to the guide rod 6093, and the guide rod 6093 passes through the through hole on the fixing plate 6091. The clamping screw 6094 is threaded into the adjustment hole, and the end of the clamping screw 6094 abuts against the clamping plate 6092.
[0019] After the tubing connector is connected to the corresponding connection hole, the guide rod 6093 abuts the clamping plate 6092 against the connector. Then, the clamping screw 6094 on the fixing plate 6091 is rotated, and the end of the clamping screw 6094 abuts against the clamping plate 6092 and applies force, thereby assisting in clamping the tubing connector and ensuring its stability. When the tubing connector needs to be disassembled, the clamping screw 6094 is rotated to make room, and the guide rod 6093 moves the clamping plate 6092 to make room, and then the tubing connector can be disassembled.
[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hydraulic cylinder with a protective structure, comprising a cylinder body (1), a connecting seat (2) fixed at the lower end of the cylinder body (1), and a piston rod (3) provided on the cylinder body (1), a first connecting hole (4) provided on the connecting seat (2), and a second connecting hole (5) provided at the upper end of the cylinder body (1), characterized in that: The cylinder body (1) is provided with a protective structure (6).
2. A hydraulic cylinder with a protective structure according to claim 1, characterized in that: The lower end of the connecting seat (2) is provided with a first rotating seat (7), and the upper end of the piston rod (3) is fixed with a second rotating seat (8).
3. A hydraulic cylinder with a protective structure according to claim 2, characterized in that: The protective structure (6) includes a first mounting sleeve (601), a second mounting sleeve (602), a connecting block (603), a round hole (604), a first protective rod (605), a threaded joint (606), a second protective rod (607), a stud (608), an auxiliary stabilizing component (609), and a connecting screw hole (610). The first mounting sleeve (601) and the second mounting sleeve (602) are fitted onto the cylinder body (1). The connecting block (603) is fixed to the ends of the first mounting sleeve (601) and the second mounting sleeve (602). The round hole (604) is formed in the first mounting sleeve (605), the second mounting sleeve (606), the connecting block (607), the connecting screw hole (608), the connecting screw hole (609), and the connecting screw hole (610). On the second mounting sleeve (602), the first protective rod (605) and the threaded joint (606) are fixedly connected, and the first protective rod (605) passes through the round hole (604). The threaded joint (606) is connected to the first mounting sleeve (601). The connecting screw hole (610) is opened on the second mounting sleeve (602). The second protective rod (607) and the stud (608) are fixedly connected, and the stud (608) is connected in the connecting screw hole (610). The auxiliary stabilizing component (609) is installed on the first mounting sleeve (601) and the second mounting sleeve (602).
4. A hydraulic cylinder with a protective structure according to claim 3, characterized in that: The first mounting sleeve (601) is provided with a threaded groove, the threaded connector (606) is connected to the threaded groove on the first mounting sleeve (601), the connecting block (603) is provided with a through hole, and the through hole on the connecting block (603) is provided with a mounting bolt, and the end of the mounting bolt is provided with a nut.
5. A hydraulic cylinder with a protective structure according to claim 4, characterized in that: The auxiliary stabilizing component (609) includes a fixing plate (6091), a clamping plate (6092), a guide rod (6093), and a clamping screw (6094). The fixing plate (6091) is provided with a through hole and an adjustment hole. The clamping plate (6092) is connected to the guide rod (6093), and the guide rod (6093) passes through the through hole on the fixing plate (6091). The clamping screw (6094) is threaded into the adjustment hole, and the end of the clamping screw (6094) abuts against the clamping plate (6092).