Hydraulic cylinder using compressed air for heat dissipation
By introducing compressed air into the hydraulic cylinder to dissipate heat, a continuous heat dissipation cycle is formed, the traditional hydraulic cylinder has been solved in terms of efficiency and versatility, efficient and stable heat dissipation in water-deficient areas, and the working efficiency and adaptability of the hydraulic cylinder are improved.
Patent Information
- Application Number
- CN202422200905.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The heat dissipation method of traditional hydraulic cylinders is insufficient in terms of efficiency and versatility, especially in water-scarce areas or unstable water supply, it is difficult to meet the demand for efficient heat dissipation.
Compressed air is used for heat dissipation. By designing a heat dissipation mechanism inside the hydraulic cylinder, a continuous heat dissipation cycle is formed, and the heat is continuously dissipated outward, keeping the hydraulic oil temperature stable within the range set by the system.
It improves the working efficiency and stability of the hydraulic cylinder, adapts to various complex environments, and is especially suitable for water-scarce areas, with efficient, stable and flexible heat dissipation performance.
Smart Images
Figure CN223062805U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a hydraulic cylinder that uses compressed air for heat dissipation. Background Art
[0002] As an important actuator in a hydraulic transmission system, the reliability of the performance of a hydraulic cylinder is crucial for the stable operation of the entire system. During the operation of a traditional hydraulic cylinder, due to the flow and friction of hydraulic oil under high pressure, a large amount of heat is generated. This part of the heat will cause the temperature of the hydraulic cylinder to continuously rise. As the oil temperature rises, it will further accelerate problems such as the aging of seals, seriously affecting the performance and lifespan of the hydraulic cylinder.
[0003] At present, the traditional heat dissipation methods for hydraulic cylinders include natural heat dissipation and liquid heat dissipation, etc. The effect of natural heat dissipation is the worst. When the hydraulic cylinder works continuously, it cannot meet the requirement of efficient heat dissipation. For liquid heat dissipation, it relies on a radiator to control the temperature of the hydraulic oil. In special working conditions (such as water-scarce areas or working conditions with unstable water source supply), its heat dissipation efficiency is not ideal, and it requires regular maintenance. Obviously, the versatility of such heat dissipation methods is poor and cannot meet the requirement of efficient heat dissipation. Summary of the Utility Model
[0004] In order to make up for the deficiencies of the prior art, the utility model provides a hydraulic cylinder that uses compressed air for heat dissipation. Its structure is reasonably designed, efficient and stable. By introducing compressed air for heat dissipation, a continuous heat dissipation cycle can be formed, continuously dissipating the heat generated inside the hydraulic cylinder to the outside, keeping the temperature of the hydraulic oil stable within the range set by the system, improving the working efficiency and stability of the hydraulic cylinder. Compared with the liquid heat dissipation system, it does not require an external water source or a heat dissipation liquid circulation system, and is particularly suitable for water-scarce areas or working conditions with unstable water source supply. This hydraulic cylinder can adapt to various complex environments, has strong versatility, and effectively improves the stability and flexibility of heat dissipation, meeting the requirement of efficient heat dissipation and solving the problems existing in the prior art.
[0005] The technical solution adopted by the utility model to solve the above technical problems is:
[0006] A hydraulic cylinder using compressed air for heat dissipation, comprising a cylinder block and oil holes respectively arranged at the left and right ends of the side wall of the cylinder block. A piston is arranged inside the cylinder block, and a piston rod connected to the piston penetrates out of the cylinder block. A gland is arranged at the left end opening of the cylinder block. The gland includes a pressing plate abutted against the opening of the cylinder block and a sleeve arranged in the middle of the left side wall of the pressing plate. The piston rod movably passes through the pressing plate and is clamped in the sleeve. A front cover is arranged on the left side of the pressing plate. A fixing hole for the sleeve to pass through is arranged in the middle of the front cover. A plurality of mounting holes are evenly spaced along the circumferential direction of the fixing hole on the left side wall of the front cover. Bolts are arranged in each mounting hole. The screw rods of the bolts horizontally pass through the front cover, the pressing plate in sequence and are threadedly connected with the cylinder block. A heat dissipation mechanism respectively matched with the front cover and the cylinder block is arranged on the gland.
[0007] Optionally, the heat dissipation mechanism includes a buffer groove opened on the right side wall of the front cover along the circumferential direction of the piston rod. Flow guiding grooves communicated with the buffer groove are arranged on the right side wall of the front cover between any two adjacent bolts. An air inlet through hole communicated with one of the flow guiding grooves is arranged on the side wall of the pressing plate. Mounting grooves are arranged on the left side wall of the pressing plate corresponding to any other flow guiding groove position except the position directly opposite to the air inlet through hole. Expansion members are arranged in each mounting groove. First heat dissipation holes horizontally penetrating through the pressing plate are arranged in each mounting groove. A plurality of second heat dissipation holes horizontally penetrating through the cylinder block are respectively arranged in the side wall of the cylinder block corresponding to each first heat dissipation hole position.
[0008] Optionally, the expansion member is an expansion valve. The expansion valve is clamped in the mounting groove. A screwing hole is arranged in the middle of the left side wall of the expansion valve. A capillary hole horizontally penetrating out of the expansion valve is arranged inside the screwing hole.
[0009] Optionally, a first annular clamping groove, a second annular clamping groove and a third annular clamping groove are sequentially arranged at intervals from left to right on the inner wall of the gland.
[0010] Optionally, a fourth annular clamping groove is arranged on the inner wall of the fixing hole.
[0011] Optionally, a fifth annular clamping groove is arranged on the right side wall of the front cover outside each bolt. The fifth annular clamping groove abuts against the left side wall of the pressing plate.
[0012] The utility model adopts the above technical scheme, and has the following advantages: the structure design is reasonable, efficient and stable. By introducing compressed air for heat dissipation, a continuous heat dissipation cycle can be formed, continuously dissipating the heat generated inside the hydraulic cylinder to keep the temperature of the hydraulic oil stable within the range set by the system, improving the working efficiency and stability of the hydraulic cylinder; compared with the liquid heat dissipation system, it does not require an external water source or a heat dissipation liquid circulation system, and is especially suitable for water-deficient areas or working conditions with unstable water source supply. This hydraulic cylinder can adapt to various complex environments, has strong versatility, and effectively improves the stability and flexibility of heat dissipation, meeting the requirements of efficient heat dissipation. Description of the Drawings
[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0014] Figure 2 is Figure 1 the left side view structural schematic diagram of
[0015] Figure 3 is Figure 2 the sectional view along the A-A direction in
[0016] Figure 4 is the three-dimensional structural schematic diagram of the front cover;
[0017] Figure 5 is the three-dimensional structural schematic diagram of the gland;
[0018] Figure 6 is the three-dimensional structural schematic diagram of the cylinder block;
[0019] Figure 7 is the three-dimensional structural schematic diagram of the expansion valve;
[0020] Figure 8 is Figure 7 the left side view structural schematic diagram of
[0021] Figure 9 is Figure 8 the sectional view along the B-B direction in
[0022] In the figure, 1. cylinder block; 2. oil hole; 3. piston; 4. piston rod; 5. pressing plate; 6. sleeve; 7. front cover; 8. fixing hole; 9. mounting hole; 10. bolt; 11. buffer groove; 12. guide groove; 13. intake through hole; 14. mounting groove; 15. first heat dissipation hole; 16. second heat dissipation hole; 17. expansion valve; 18. screwing hole; 19. capillary hole; 20. first annular clamping groove; 21. second annular clamping groove; 22. third annular clamping groove. Specific embodiments
[0023] To clearly illustrate the technical features of this solution, the present utility model will be elaborated in detail below through specific embodiments in combination with the accompanying drawings. In the following description, many specific details are set forth in order to fully understand this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the protection scope of this application is not limited by the specific embodiments disclosed below.
[0024] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.
[0025] In the present application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0026] As Figures 1-9 shown, in this embodiment, a hydraulic cylinder using compressed air for heat dissipation includes a cylinder block 1 and oil holes 2 respectively arranged at the left and right ends of the side wall of the cylinder block 1. A piston 3 is arranged in the cylinder block 1, and a piston rod 4 connected to the piston 3 penetrates out of the cylinder block 1 outward. A gland is arranged at the left end opening of the cylinder block 1. The gland includes a pressing plate 5 abutted against the opening of the cylinder block 1 and a sleeve 6 arranged in the middle of the left side wall of the pressing plate 5. The piston rod 4 movably passes through the pressing plate 5 and is clamped in the sleeve 6. A front cover 7 is arranged on the left side of the pressing plate 5. A fixing hole 8 for the sleeve to pass through is arranged in the middle of the front cover 7. A plurality of mounting holes 9 are evenly spaced along the circumferential direction of the fixing hole 8 on the left side wall of the front cover 7. Bolts 10 are arranged in each of the mounting holes 9. The screw rods of the bolts 10 horizontally pass through the front cover 7, the pressing plate 5 in sequence and are threadedly connected to the cylinder block 1. A heat dissipation mechanism respectively cooperating with the front cover 7 and the cylinder block 1 is arranged on the gland.
[0027] Optionally, the heat dissipation mechanism includes a buffer groove 11 formed on the right side wall of the front cover 7 along the circumferential direction of the piston rod 4. A diversion groove 12 communicating with the buffer groove 11 is provided on the right side wall of the front cover 7 between any two adjacent bolts 10. An air inlet through hole 13 communicating with one of the diversion grooves 12 is provided on the side wall of the pressing plate 5. An installation groove 14 is provided on the left side wall of the pressing plate 5 corresponding to any other diversion groove 12 except the one directly opposite the air inlet through hole 13. An expansion member is provided in each installation groove 14. A first heat dissipation hole 15 horizontally penetrating the pressing plate 5 is provided in each installation groove 14. A plurality of second heat dissipation holes 16 horizontally penetrating the cylinder block 1 are respectively provided in the cylinder block 1 corresponding to the positions of the first heat dissipation holes 15. It should be noted that the buffer groove 11 and each diversion groove 12 do not exceed the range of the pressing plate 5, and the pressing plate 5 can completely cover them.
[0028] Optionally, the expansion member is an expansion valve 17. The expansion valve 17 is snap-fitted in the installation groove 14. A screwing hole 18 is provided in the middle of the left side wall of the expansion valve 17. A capillary hole 19 horizontally penetrating the expansion valve 17 is provided inside the screwing hole 18.
[0029] Optionally, a first annular clamping groove 20, a second annular clamping groove 21 and a third annular clamping groove 22 are sequentially arranged at intervals from left to right on the inner wall of the gland. By installing a dust-proof ring in the first annular clamping groove 20, the entry of dust is blocked, preventing the internal pollution of the hydraulic cylinder by external dust, etc. in a harsh environment; by installing a sealing ring in the second annular clamping groove 21, the sealing performance between the front cover 7 and the pressing plate 5 is improved, preventing gas leakage; by installing a support ring in the third annular clamping groove 22, sufficient support force is given to the piston rod 4, improving the stability of the use of the hydraulic cylinder.
[0030] Optionally, a fourth annular clamping groove 23 is provided on the inner wall of the fixing hole. By installing a sealing ring in the fourth annular clamping groove 23, the sealing performance of the buffer groove 11 is further improved.
[0031] Optionally, a fifth annular clamping groove 24 is provided on the right side wall of the front cover 7 outside each bolt 10. The fifth annular clamping groove 24 abuts against the left side wall of the pressing plate 5. By installing a sealing ring in the fifth annular clamping groove 24, the sealing performance between the front cover 7 and the pressing plate 5 is improved.
[0032] When this device is in use, compressed gas is flushed into the intake through-hole 13 of the cylinder block 1. The compressed gas enters the flow guiding groove 12 on the side opposite to the intake through-hole 13 through the intake through-hole 13, and then enters the buffer groove 11 of the front cover 7 along the flow guiding groove 12. After the buffer groove 11 is filled, it is then shunted to the installation grooves 14 where each expansion valve 17 is located through other flow guiding grooves 12. The compressed gas enters the capillary hole 19 through the screwing hole 18 of the expansion valve 17. Under high pressure, high-density air will expand into normal-pressure air and absorb heat during the expansion process, thereby forming a low-temperature heat dissipation gas. Then, it is discharged out of the cylinder block 1 through the first heat dissipation hole 15 and the second heat dissipation hole 16. During the discharge process, the heat inside the cylinder block 1 is taken out together, forming a continuous heat dissipation cycle, so as to achieve the effects of refrigeration and temperature reduction, and ensure that the temperature of the hydraulic oil is within the range set by the system.
[0033] In the figure, 1. cylinder block; 2. oil hole; 3. piston; 4. piston rod; 5. pressing plate; 6. sleeve; 7. front cover; 8. fixing hole; 9. installation hole; 10. bolt; 11. buffer groove; 12. flow guiding groove; 13. intake through-hole; 14. installation groove; 15. first heat dissipation hole; 16. second heat dissipation hole; 17. expansion valve; 18. screwing hole; 19. capillary hole; 20. first annular clamping groove; 21. second annular clamping groove; 22. third annular clamping groove.
[0034] It has a reasonable structural design, is efficient and stable. By introducing compressed air for heat dissipation, it can form a continuous heat dissipation cycle, continuously dissipate the heat generated inside the hydraulic cylinder to the outside, keep the temperature of the hydraulic oil stable within the range set by the system, and improve the working efficiency and stability of the hydraulic cylinder; compared with the liquid heat dissipation system, it does not require an external water source or a heat dissipation liquid circulation system, and is especially suitable for water-scarce areas or working conditions with unstable water source supply. This hydraulic cylinder can adapt to various complex environments, has strong versatility, and effectively improves the stability and flexibility of heat dissipation, meets the requirements of efficient heat dissipation, and solves the problems existing in the prior art.
[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention; for those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.
[0036] For those not elaborated in this utility model, they are all well-known technologies to those skilled in the art.
Claims
1. A hydraulic cylinder using compressed air for heat dissipation, comprising a cylinder block and oil holes respectively arranged at the left and right ends of the side wall of the cylinder block. A piston is arranged in the cylinder block, and a piston rod connected to the piston penetrates out of the cylinder block outward. It is characterized in that, A gland is provided at the left end opening of the cylinder block. The gland includes a pressing plate abutting against the opening of the cylinder block and a sleeve provided in the middle of the left side wall of the pressing plate. The piston rod movably passes through the pressing plate and is clamped in the sleeve. A front cover is provided on the left side of the pressing plate. A fixing hole for the sleeve to pass through is provided in the middle of the front cover. A plurality of mounting holes are evenly spaced along the circumferential direction of the fixing hole on the left side wall of the front cover. Bolts are provided in each mounting hole. The screw rods of the bolts horizontally pass through the front cover, the pressing plate in sequence and are threadedly connected to the cylinder block. A heat dissipation mechanism respectively cooperating with the front cover and the cylinder block is provided on the gland.
2. The hydraulic cylinder using compressed air for heat dissipation according to claim 1, wherein, The heat dissipation mechanism includes a buffer groove opened on the right side wall of the front cover along the circumferential direction of the piston rod. A diversion groove communicating with the buffer groove is provided on the right side wall of the front cover between any two adjacent bolts. An air inlet through hole communicating with one of the diversion grooves is provided on the side wall of the pressing plate. Mounting grooves are provided on the left side wall of the pressing plate corresponding to any other diversion groove position except the position directly opposite to the air inlet through hole. Expansion elements are provided in each mounting groove. First heat dissipation holes horizontally penetrating the pressing plate are provided in each mounting groove. A plurality of second heat dissipation holes horizontally penetrating the cylinder block are respectively provided in the side wall of the cylinder block corresponding to each first heat dissipation hole position.
3. A hydraulic cylinder using compressed air for heat dissipation according to claim 2, characterized in that, The expansion element is an expansion valve. The expansion valve is clamped in the mounting groove. A screwing hole is provided in the middle of the left side wall of the expansion valve. A capillary hole horizontally penetrating the expansion valve is provided inside the screwing hole.
4. A hydraulic cylinder using compressed air for heat dissipation according to claim 1, characterized in that, A first annular clamping groove, a second annular clamping groove and a third annular clamping groove are sequentially spaced from left to right on the inner wall of the gland.
5. A hydraulic cylinder using compressed air for heat dissipation according to claim 1, characterized in that, A fourth annular clamping groove is provided on the inner wall of the fixing hole.
6. A hydraulic cylinder using compressed air for heat dissipation according to claim 1, characterized in that, A fifth annular clamping groove is provided on the right side wall of the front cover outside each bolt. The fifth annular clamping groove abuts against the left side wall of the pressing plate.