Hydraulic cylinder with high safety performance

Abstract

The utility model discloses a hydraulic oil cylinder that high safety performance belongs to hydraulic oil cylinder technical field, and its technical scheme main points include hydraulic oil cylinder body, the bottom fixed connection of hydraulic oil cylinder body has the connecting mechanism, the surface fixed connection of connecting mechanism has the damping mechanism, and connecting mechanism realizes hydraulic oil cylinder body and the anti -vibration fastening of connecting mechanism through high -strength thread, and four limit rods form rigid frame to the left and right in front and back, and the radial displacement of damper is limited, prevents damping element overload deviation, and provides the installation reference for damper simultaneously, ensures the symmetry of damping mechanism, and the damper in damping mechanism can carry out damping dissipation to vibration energy, reduces vibration amplitude, and the fixed link is welded between damper bottom and fixed block, and the axial load of damper is dispersed to fixed plate chamfer place, avoids the weld cracking of single point stress, and the neoprene pad can cope with low -frequency vibration, prevents horizontal displacement when resonance.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a hydraulic cylinder with high safety performance. Background Technology

[0002] In modern industry, hydraulic cylinders, as the core actuators for achieving linear reciprocating motion, are widely used in engineering machinery, aerospace, metallurgical equipment, and automated production lines. However, as equipment operating conditions become increasingly complex, the safety hazards of traditional hydraulic cylinders are becoming more and more prominent, making it difficult to meet current safety production needs.

[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing hydraulic cylinders lack structures for impact protection and shock absorption, leading to cylinder fatigue cracking, accelerated wear of seals, and subsequent hydraulic oil leakage. This, in turn, reduces the safety of the hydraulic cylinder during use.

[0004] Therefore, a hydraulic cylinder with high safety performance is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic cylinder with high safety performance, which can solve the problem that existing hydraulic cylinders lack impact protection and shock absorption structures, leading to cylinder body fatigue cracking, accelerated wear of seals, and subsequent hydraulic oil leakage, thereby reducing the safety of the hydraulic cylinder during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder with high safety performance, comprising a hydraulic cylinder body, a connecting mechanism fixedly connected to the bottom of the hydraulic cylinder body, and a shock-absorbing mechanism fixedly connected to the surface of the connecting mechanism;

[0007] The damping mechanism includes four damping shock absorbers, a fixed rod, a fixed block, and a rubber damping pad. The damping shock absorbers are fixedly connected to the surface of the connecting mechanism. The fixed rod is fixedly connected to the bottom of the damping shock absorber. The fixed block is welded to the chamfer at the bottom of the inner side of the connecting mechanism. The side of the fixed rod away from the damping shock absorber is welded to the surface of the fixed block. The rubber damping pad is fixedly connected to the top of the inner side of the connecting mechanism, and the top of the rubber damping pad is in contact with the bottom of the connecting mechanism.

[0008] Preferably, the connecting mechanism includes a connecting plate, a fixing plate, a limiting rod, and a protective shell, wherein the connecting plate is threadedly connected to the bottom of the hydraulic cylinder body.

[0009] Preferably, the fixing plate is welded to the surface of the connecting plate, the rubber shock-absorbing pad is fixedly connected to the top of the inner side of the fixing plate, and the top of the rubber shock-absorbing pad is in contact with the bottom of the connecting plate.

[0010] Preferably, the limiting rod is welded to the front and rear sides of the left side of the fixed plate and the front and rear sides of the right side of the fixed plate, the damping shock absorber is fixedly connected to the surface of the limiting rod, the protective shell is welded to the surface of the fixed plate, and the fixing block is welded to the chamfer at the bottom of the inner side of the protective shell.

[0011] Preferably, a shock-absorbing ring is fixedly connected to the side of the fixing rod near the fixing block, and the surface of the shock-absorbing ring is coated with an anti-corrosion coating.

[0012] Preferably, an anti-loosening nut is provided at the threaded connection between the connecting plate and the hydraulic cylinder body, and the surface of the anti-loosening nut is coated with a molybdenum disulfide lubricating coating.

[0013] Preferably, the top of the connecting plate is provided with four buffer rings, the buffer rings are made of rubber material, and the top of the buffer rings are in contact with the bottom of the hydraulic cylinder body.

[0014] Preferably, the protective shell has mounting holes on both the left and right sides, a cooling fan is installed inside the mounting holes, and a dust filter is welded to the inside of the mounting holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The connection mechanism of this application achieves vibration-resistant fastening between the hydraulic cylinder body and the connection mechanism through high-strength threads. The four limit rods in the front, rear, left and right form a rigid frame to limit the radial displacement of the damping shock absorber, prevent the shock absorber from being overloaded and shifted, and at the same time provide an installation reference for the damper to ensure the symmetry of the shock absorber mechanism.

[0017] 2. The damper in the vibration reduction mechanism of this application can dampen and dissipate vibration energy, reduce vibration amplitude, and the fixed rod is welded between the bottom of the damper and the fixed block to distribute the axial load of the damper to the chamfer of the fixed plate, avoiding weld cracking caused by single-point force. The neoprene rubber pad can cope with low-frequency vibration and prevent horizontal displacement during resonance. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the high-safety hydraulic cylinder of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the damping shock absorber of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the rubber shock-absorbing pad of this utility model;

[0021] Figure 4 This is a schematic diagram of the connecting plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the limiting rod of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the buffer ring of this utility model.

[0024] In the diagram, 1. Hydraulic cylinder body; 2. Connecting mechanism; 21. Connecting plate; 22. Fixing plate; 23. Limiting rod; 24. Protective shell; 3. Shock absorption mechanism; 31. Damping shock absorber; 32. Fixing rod; 33. Fixing block; 34. Rubber shock absorber pad; 4. Shock absorber ring; 5. Anti-loosening nut; 6. Buffer ring; 7. Mounting hole; 8. Cooling fan; 9. Dust filter. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-6 The present invention provides the following technical solution:

[0027] A high-safety-performance hydraulic cylinder includes a hydraulic cylinder body 1, a connecting mechanism 2 fixedly connected to the bottom of the hydraulic cylinder body 1, and a shock-absorbing mechanism 3 fixedly connected to the surface of the connecting mechanism 2.

[0028] The damping mechanism 3 includes four damping dampers 31, a fixing rod 32, a fixing block 33, and a rubber damping pad 34. The damping dampers 31 are fixedly connected to the surface of the connecting mechanism 2. The fixing rod 32 is fixedly connected to the bottom of the damping damper 31. The fixing block 33 is welded to the chamfer at the bottom of the inner side of the connecting mechanism 2. The side of the fixing rod 32 away from the damping damper 31 is welded to the surface of the fixing block 33. The rubber damping pad 34 is fixedly connected to the top of the inner side of the connecting mechanism 2. The top of the rubber damping pad 34 is in contact with the bottom of the connecting mechanism 2.

[0029] In this embodiment: the hydraulic cylinder body 1 provides the driving force for linear reciprocating motion, which is the foundation for the entire device to achieve its function. Its performance directly affects the working efficiency and accuracy of the equipment. The damping shock absorber 31 is filled with high viscosity index silicone oil to reduce the vibration amplitude and effectively suppress the medium and high frequency vibrations generated when the hydraulic cylinder is working. The fixed rod 32 connects the bottom of the damping shock absorber 31 to the fixed block 33, forming a triangular stable structure to disperse the axial load of the damper, avoid single-point force, and improve the load-bearing capacity of the shock absorption mechanism 3. The fixed block 33 serves as the welding support point of the fixed rod 32, enhancing the structural rigidity and stability of the shock absorption mechanism 3. The rubber damping pad 34 uses composite rubber material and is embedded with metal mesh to cope with low frequency vibrations, improve lateral shear stiffness, and work with the damping shock absorber 31 to cover wide frequency vibrations.

[0030] Specifically, such as Figure 4 , Figure 5 As shown, the connecting mechanism 2 includes a connecting plate 21, a fixing plate 22, a limiting rod 23, and a protective shell 24. The connecting plate 21 is threadedly connected to the bottom of the hydraulic cylinder body 1.

[0031] Specifically, such as Figure 4 , Figure 5 As shown, the fixing plate 22 is welded to the surface of the connecting plate 21, and the rubber shock-absorbing pad 34 is fixedly connected to the top of the inner side of the fixing plate 22, with the top of the rubber shock-absorbing pad 34 in contact with the bottom of the connecting plate 21.

[0032] Specifically, such as Figure 4 , Figure 5 As shown, the limiting rod 23 is welded to the front and rear sides of the left side of the fixed plate 22 and the front and rear sides of the right side of the fixed plate 22. The damping shock absorber 31 is fixedly connected to the surface of the limiting rod 23. The protective shell 24 is welded to the surface of the fixed plate 22. The fixing block 33 is welded to the chamfer at the bottom of the inner side of the protective shell 24.

[0033] In this embodiment: the connecting plate 21 can support and limit the hydraulic cylinder body 1, the fixing plate 22 provides installation support for the rubber shock absorber 34 and the connecting plate 21, enhances the overall rigidity of the connecting mechanism 2, disperses the stress generated when the hydraulic cylinder is working, and improves the structural stability. The limiting rod 23 provides installation positioning and limiting for the damping shock absorber 31, limits the radial displacement of the shock absorber, ensures the stable operation of the shock absorption mechanism 3, and avoids the impact of displacement on the shock absorption effect. The protective shell 24 forms a protective barrier to isolate dust, oil, external impacts, etc., protect the internal shock absorption mechanism 3, and enhance the overall structural strength. At the same time, a PLC controller is installed on the front side of the protective shell 24, which can control the cooling fan 8.

[0034] Specifically, such as Figure 5 As shown, a shock-absorbing ring 4 is fixedly connected to the side of the fixing rod 32 near the fixing block 33, and the surface of the shock-absorbing ring 4 is coated with anti-corrosion paint.

[0035] Specifically, such as Figure 6 As shown, an anti-loosening nut 5 is provided at the threaded connection between the connecting plate 21 and the hydraulic cylinder body 1, and the surface of the anti-loosening nut 5 is coated with a molybdenum disulfide lubricating coating.

[0036] In this embodiment: by setting a shock-absorbing ring 4, made of EPDM rubber, it can absorb the residual vibration transmitted by the fixed rod 32, further improving the shock absorption effect. By setting an anti-corrosion coating, the shock-absorbing ring 4 can resist corrosion and increase its service life. By setting an anti-loosening nut 5, it can effectively prevent the nut from loosening under vibration and impact conditions. By setting a molybdenum disulfide lubricating coating, the molybdenum disulfide coating has good wear resistance, reduces thread wear, ensures long-term connection tightness, and avoids safety hazards such as hydraulic cylinder displacement and oil leakage caused by nut loosening.

[0037] Specifically, such as Figure 6 As shown, the top of the connecting plate 21 is provided with four buffer rings 6, which are made of rubber material, and the top of the buffer rings 6 contacts the bottom of the hydraulic cylinder body 1.

[0038] Specifically, such as Figure 1 As shown, mounting holes 7 are provided on both the left and right sides of the protective shell 24. A cooling fan 8 is installed inside the mounting hole 7, and a dust filter 9 is welded to the inside of the mounting hole 7.

[0039] In this embodiment: by setting a buffer ring 6, the hard impact of the hydraulic cylinder body 1 on the connecting plate 21 can be reduced, protecting the connecting thread structure and preventing thread damage and breakage caused by impact. At the same time, it reduces the vibration transmission to the connection part, improving the overall connection stability and safety. By setting the buffer ring 6 to be made of rubber material and installed on the top of the connecting plate 21, the high elasticity of rubber can effectively absorb the vertical impact force when the hydraulic cylinder starts and stops or the load changes suddenly. By setting the mounting hole 7, a mounting base is provided for the cooling fan 8 and the dust filter 9. By setting the cooling fan 8, forced convection can be provided to accelerate air flow, which can reduce the working temperature of the damping shock absorber 31, avoid the performance degradation of the damping material or the aging and failure of the components due to high temperature, and extend the service life of the damping mechanism 3. By setting the dust filter 9, dust, particles and other impurities can be effectively blocked from entering the protective shell 24, preventing them from clogging the throttling hole of the damping shock absorber 31 and affecting the damping performance.

[0040] Working principle: First, the operator connects the connecting plate 21 to the bottom of the hydraulic cylinder body 1 via the anti-loosening nut 5 to support and limit the hydraulic cylinder body 1. Then, when the hydraulic cylinder body 1 starts to work and generates vibration, the rubber damping pad 34 absorbs the vibration transmitted by the connecting plate 21 and transmits it to the fixed plate 22. After that, the damping shock absorbers 31 on both sides of the fixed plate 22 suppress the medium and high frequency vibrations generated when the hydraulic cylinder is working, reducing the vibration amplitude. At this time, the damping ring 4 absorbs the residual vibration transmitted by the fixed rod 32. Finally, when the damping shock absorber 31 generates heat after working for a long time, the operator controls the cooling fan 8 to turn on through the PLC controller. The cooling fan 8 forces convection to cool down the temperature of the damping shock absorber 31 and ensure stable damping performance.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic cylinder with high safety performance, comprising a hydraulic cylinder body (1), characterized in that: The bottom of the hydraulic cylinder body (1) is fixedly connected to a connecting mechanism (2), and the surface of the connecting mechanism (2) is fixedly connected to a shock-absorbing mechanism (3); The damping mechanism (3) includes four damping dampers (31), a fixing rod (32), a fixing block (33), and a rubber damping pad (34). The damping dampers (31) are fixedly connected to the surface of the connecting mechanism (2). The fixing rod (32) is fixedly connected to the bottom of the damping damper (31). The fixing block (33) is welded to the chamfer at the bottom of the inner side of the connecting mechanism (2). The side of the fixing rod (32) away from the damping damper (31) is welded to the surface of the fixing block (33). The rubber damping pad (34) is fixedly connected to the top of the inner side of the connecting mechanism (2). The top of the rubber damping pad (34) is in contact with the bottom of the connecting mechanism (2).

2. A high-safety-performance hydraulic cylinder according to claim 1, characterized in that: The connecting mechanism (2) includes a connecting plate (21), a fixing plate (22), a limiting rod (23), and a protective shell (24). The connecting plate (21) is threadedly connected to the bottom of the hydraulic cylinder body (1).

3. A high-safety-performance hydraulic cylinder according to claim 2, characterized in that: The fixing plate (22) is welded to the surface of the connecting plate (21), and the rubber shock absorber (34) is fixedly connected to the top of the inner side of the fixing plate (22). The top of the rubber shock absorber (34) is in contact with the bottom of the connecting plate (21).

4. A hydraulic cylinder with high safety performance according to claim 2, characterized in that: The limiting rod (23) is welded to the front and rear sides of the left side of the fixed plate (22) and the front and rear sides of the right side of the fixed plate (22). The damping shock absorber (31) is fixedly connected to the surface of the limiting rod (23). The protective shell (24) is welded to the surface of the fixed plate (22). The fixing block (33) is welded to the chamfer at the bottom of the inner side of the protective shell (24).

5. A high-safety-performance hydraulic cylinder according to claim 1, characterized in that: A shock-absorbing ring (4) is fixedly connected to the side of the fixing rod (32) near the fixing block (33), and the surface of the shock-absorbing ring (4) is coated with an anti-corrosion coating.

6. A high-safety-performance hydraulic cylinder according to claim 2, characterized in that: The connecting plate (21) and the hydraulic cylinder body (1) are provided with a locking nut (5), and the surface of the locking nut (5) is coated with a molybdenum disulfide lubricating coating.

7. A high-safety-performance hydraulic cylinder according to claim 2, characterized in that: The top of the connecting plate (21) is provided with four buffer rings (6), which are made of rubber material, and the top of the buffer rings (6) is in contact with the bottom of the hydraulic cylinder body (1).

8. A high-safety-performance hydraulic cylinder according to claim 2, characterized in that: The protective shell (24) has mounting holes (7) on both the left and right sides. A cooling fan (8) is installed inside the mounting hole (7), and a dust filter (9) is welded inside the mounting hole (7).

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