Hydraulic cylinder with guard
Patent Information
- Application Number
- CN202620153167.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-03
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2036-02-03
AI Technical Summary
[0003]但是，现有的液压油缸在使用过程中，油缸工作时的径向力、倾覆力矩集中于前端盖与安装板的连接部位，长期运行易导致连接螺栓松动、连接板变形，甚至引发油缸抖动、偏移
1、通过设置有防护机构，方便地完成加固架与前端盖之间的固定，达到了易于装配的目的，可大幅简化安装流程，无需复杂专用工具，便于后期维护时的拆卸与重装，通过加固架和支撑块组成的加固支撑结构能分散油缸工作时产生的径向力和倾覆力矩，避免应力集中于前端盖和安装板的连接部位，减少螺栓松动和安装板变形的风险，提升液压油缸主体运行的刚性与稳定性，延长连接部位及油缸整体的使用寿命，达到了具有防护功能的目的。
Smart Images
Figure CN224903640U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder technology, specifically a hydraulic cylinder with a protective device. Background Technology
[0002] Hydraulic cylinders are the core actuators in hydraulic systems. They convert hydraulic energy into linear reciprocating mechanical energy to drive loads to perform lifting, pushing, and pulling actions. They are widely used in engineering machinery, metallurgical equipment, machine tools, ships, and other fields. With their strong load-bearing capacity, stable operation, and high control precision, they provide reliable power output for various heavy equipment and are key components connecting hydraulic systems and working mechanisms.
[0003] However, in existing hydraulic cylinders, the radial force and overturning moment during operation are concentrated at the connection between the front cover and the mounting plate. Long-term operation can easily lead to loosening of the connecting bolts, deformation of the connecting plate, and even cylinder vibration and misalignment. Therefore, those skilled in the art have provided a hydraulic cylinder with a protective device to solve the problems mentioned in the background section. Utility Model Content
[0004] The purpose of this invention is to provide a hydraulic cylinder with a protective device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A hydraulic cylinder with a protective device includes a hydraulic cylinder body, a front end cover connected to one side of the hydraulic cylinder body, a rear end cover provided on the side of the hydraulic cylinder body away from the front end cover, a mounting plate fixed on the side of the front end cover away from the hydraulic cylinder body, a protective mechanism installed on the side of the mounting plate close to the front end cover, and a protective mechanism installed on the outer side of the rear end cover. The protective mechanism includes a reinforcing frame, a support block fixed to the outside of the reinforcing frame, a first mounting block provided on the outside of the reinforcing frame, a second mounting block fixed to the outside of the support block, a first semi-threaded rod fixed to the outside of the first mounting block, a second semi-threaded rod mounted on the outside of the second mounting block, and a threaded sleeve threadedly connected to the outside of the first and second semi-threaded rods.
[0006] As an improvement of this utility model: the side of the reinforcing frame that is in contact with the front end cover is provided with an anti-slip and wear-resistant pad, which is fixedly connected to the reinforcing frame by adhesive.
[0007] As an improvement of this utility model: the outer wall of the threaded sleeve is provided with uniformly distributed anti-slip texture, the inner wall of the threaded sleeve is provided with internal threads that match the first half-threaded rod and the second half-threaded rod, the reinforcing frame is fixedly connected to the mounting plate, and the radius of the second half-threaded rod is equal to the radius of the first half-threaded rod.
[0008] As an improvement of this utility model: the protective mechanism includes a protective sleeve, a limiting groove is formed inside the protective sleeve, an installation groove is formed inside the protective sleeve, a threaded post is fixed on the outer side of the rear end cover, a washer is movably sleeved on the outer side of the threaded post, and a metal nut is threadedly connected to the outer side of the threaded post.
[0009] As an improvement of this utility model: the gasket is an elastic metal gasket, and the inner diameter of the gasket is adapted to the outer diameter of the threaded post.
[0010] As an improvement of this utility model: the size of the limiting groove is adapted to the size of the threaded column, and the protective sleeve is movably sleeved on the outside of the rear end cover.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By incorporating a protective mechanism, the reinforcement frame and front cover are easily fixed, achieving easy assembly and significantly simplifying the installation process. No complex special tools are required, facilitating disassembly and reassembly during later maintenance. The reinforcement support structure composed of the reinforcement frame and support block can disperse the radial force and overturning moment generated during the operation of the hydraulic cylinder, avoiding stress concentration at the connection between the front cover and the mounting plate, reducing the risk of bolt loosening and mounting plate deformation, improving the rigidity and stability of the hydraulic cylinder body, and extending the service life of the connection parts and the entire cylinder, thus achieving the purpose of providing protection.
[0012] 2. With the protective mechanism in place, when the protective sleeve is installed on the outside of the rear end cover, it is easy to install and fix the protective sleeve and the rear end cover. The protective sleeve can resist external bumps, impacts and scratches from debris in the working conditions, avoid connection failure or cylinder failure caused by accidental damage, and improve the protective performance of this device. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a front view of the present invention; Figure 4 This is a schematic diagram of the protective mechanism in this utility model; Figure 5 for Figure 1 A magnified diagram of region A.
[0014] In the diagram: 1. Hydraulic cylinder body; 2. Front end cover; 3. Rear end cover; 4. Protective mechanism; 41. Reinforcing frame; 42. Support block; 43. First mounting block; 44. Second mounting block; 45. First half-threaded rod; 46. Second half-threaded rod; 47. Threaded sleeve; 5. Protective mechanism; 51. Protective sleeve; 52. Limiting groove; 53. Threaded column; 54. Washer; 55. Metal nut; 56. Mounting groove; 6. Mounting plate. Detailed Implementation
[0015] The technical solution of this utility model will be further described in detail below with reference to specific embodiments: First embodiment: Please see Figures 1-5 A hydraulic cylinder with a protective device includes a hydraulic cylinder body 1, a front end cover 2 connected to one side of the hydraulic cylinder body 1, a rear end cover 3 provided on the side of the hydraulic cylinder body 1 away from the front end cover 2, a mounting plate 6 fixed on the side of the front end cover 2 away from the hydraulic cylinder body 1, a protective mechanism 4 installed on the side of the mounting plate 6 close to the front end cover 2, and a protective mechanism 5 installed on the outside of the rear end cover 3. The protective mechanism 4 includes a reinforcing frame 41, a support block 42 fixed to the outside of the reinforcing frame 41, a first mounting block 43 on the outside of the reinforcing frame 41, a second mounting block 44 fixed to the outside of the support block 42, a first semi-threaded rod 45 fixed to the outside of the first mounting block 43, and a second semi-threaded rod 46 mounted on the outside of the second mounting block 44. The first semi-threaded rod 45 and the second semi-threaded rod 46 are connected by a threaded sleeve 47 on their common outer sides. An anti-slip and wear-resistant pad is provided on the side of the reinforcing frame 41 that is in contact with the front end cover 2. The anti-slip and wear-resistant pad is fixedly connected to the reinforcing frame 41 by adhesive. The outer wall of the threaded sleeve 47 has evenly distributed anti-slip textures. The inner wall of the threaded sleeve 47 has internal threads that match the first semi-threaded rod 45 and the second semi-threaded rod 46. The reinforcing frame 41 is fixedly connected to the mounting plate 6. The radius of the second semi-threaded rod 46 is equal to the radius of the first semi-threaded rod 45.
[0016] With the above settings, after the front end cover 2 and the mounting plate 6 are fixedly connected, the corresponding surface of the reinforcing frame 41 on the outside of the mounting plate 6 is in contact with the outside of the front end cover 2, and the corresponding surface of the first mounting block 43 is in contact with the second mounting block 44. The threaded sleeve 47 can be used to connect the first half-threaded rod 45 and the second half-threaded rod 46, which can easily complete the fixing between the reinforcing frame 41 and the front end cover 2, achieving the purpose of easy assembly. It can greatly simplify the installation process, eliminate the need for complicated special tools, and facilitate disassembly and reassembly during later maintenance. The reinforcing support structure composed of the reinforcing frame 41 and the support block 42 can disperse the radial force and overturning moment generated when the oil cylinder is working, and avoid stress concentration at the connection between the front end cover 2 and the mounting plate 6.
[0017] In summary, by incorporating the protective mechanism 4, the fixing between the reinforcing frame 41 and the front cover 2 is easily accomplished, achieving the goal of easy assembly. This significantly simplifies the installation process, eliminates the need for complex special tools, and facilitates disassembly and reassembly during later maintenance. The reinforcing support structure composed of the reinforcing frame 41 and the support block 42 can disperse the radial force and overturning moment generated during the operation of the hydraulic cylinder, preventing stress concentration at the connection between the front cover 2 and the mounting plate 6, reducing the risk of bolt loosening and mounting plate 6 deformation, improving the rigidity and stability of the hydraulic cylinder body 1, and extending the service life of the connection parts and the entire cylinder, thus achieving the purpose of providing protective functions.
[0018] Second embodiment: Please see Figures 1-5 Based on the first embodiment, the protective mechanism 5 includes a protective sleeve 51, a limiting groove 52 is provided inside the protective sleeve 51, an installation groove 56 is provided inside the protective sleeve 51, a threaded post 53 is fixed on the outside of the rear end cover 3, a washer 54 is movably sleeved on the outside of the threaded post 53, a metal nut 55 is threadedly connected to the outside of the threaded post 53, the washer 54 is an elastic metal washer, the inner diameter of the washer 54 is adapted to the outer diameter of the threaded post 53, the size of the limiting groove 52 is adapted to the size of the threaded post 53, and the protective sleeve 51 is movably sleeved on the outside of the rear end cover 3.
[0019] With the above settings, when the protective sleeve 51 is installed on the outside of the rear end cover 3, the protective sleeve 51 is movably sleeved on the outside of the rear end cover 3. At this time, the threaded post 53 on the outside of the rear end cover 3 is inserted into the limiting groove 52. Then, the gasket 54 is movably sleeved on the outside of the threaded post 53, and the metal nut 55 is threadedly connected to the threaded post 53, so as to conveniently complete the installation and fixation between the protective sleeve 51 and the rear end cover 3.
[0020] In summary, by providing the protective mechanism 5, when the protective sleeve 51 is installed on the outside of the rear end cover 3, the installation and fixation between the protective sleeve 51 and the rear end cover 3 can be easily completed. The protective sleeve 51 can resist external bumps, impacts, and scratches from debris in the working conditions, avoiding connection failure or cylinder failure caused by accidental damage, thus improving the protective performance of this device.
[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A hydraulic cylinder with a protective device, comprising a hydraulic cylinder body (1), characterized in that, A front cover (2) is connected to one side of the hydraulic cylinder body (1). A rear cover (3) is provided on the side of the hydraulic cylinder body (1) away from the front cover (2). A mounting plate (6) is fixed on the side of the front cover (2) away from the hydraulic cylinder body (1). A protective mechanism (4) is installed on the side of the mounting plate (6) close to the front cover (2). A protective mechanism (5) is installed on the outside of the rear cover (3). The protective mechanism (4) includes a reinforcing frame (41), a support block (42) is fixed on the outside of the reinforcing frame (41), a first mounting block (43) is provided on the outside of the reinforcing frame (41), a second mounting block (44) is fixed on the outside of the support block (42), a first semi-threaded rod (45) is fixed on the outside of the first mounting block (43), a second semi-threaded rod (46) is installed on the outside of the second mounting block (44), and a threaded sleeve (47) is threadedly connected to the outside of the first semi-threaded rod (45) and the second semi-threaded rod (46).
2. A hydraulic cylinder with a protective device according to claim 1, characterized in that, The side of the reinforcing frame (41) that is in contact with the front cover (2) is provided with an anti-slip and wear-resistant pad, which is fixedly connected to the reinforcing frame (41) by adhesive.
3. A hydraulic cylinder with a protective device according to claim 2, characterized in that, The outer wall of the threaded sleeve (47) is provided with uniformly distributed anti-slip textures, and the inner wall of the threaded sleeve (47) is provided with internal threads that match the first half-threaded rod (45) and the second half-threaded rod (46). The reinforcing frame (41) is fixedly connected to the mounting plate (6), and the radius of the second half-threaded rod (46) is equal to the radius of the first half-threaded rod (45).
4. A hydraulic cylinder with a protective device according to claim 1, characterized in that, The protective mechanism (5) includes a protective sleeve (51), a limiting groove (52) is provided inside the protective sleeve (51), an installation groove (56) is provided inside the protective sleeve (51), a threaded post (53) is fixed on the outside of the rear end cover (3), a gasket (54) is movably sleeved on the outside of the threaded post (53), and a metal nut (55) is threaded on the outside of the threaded post (53).
5. A hydraulic cylinder with a protective device according to claim 4, characterized in that, The gasket (54) is an elastic metal gasket, and the inner diameter of the gasket (54) is adapted to the outer diameter of the threaded post (53).
6. A hydraulic cylinder with a protective device according to claim 5, characterized in that, The size of the limiting groove (52) is adapted to the size of the threaded post (53), and the protective sleeve (51) is movably sleeved on the outside of the rear end cover (3).