Durable hydraulic oil cylinder

Abstract

The utility model discloses a durable hydraulic oil cylinder, which belongs to the technical field of hydraulic oil cylinders and comprises a cylinder body, a base is arranged at the lower end of the cylinder body, a piston is arranged in the cylinder body, a piston rod is arranged at the upper end of the piston, and a sealing cover is arranged at the upper end of the cylinder body. Protruding blocks at the two ends of an annular plate enter sliding grooves of a fixing plate, then fixing bolts penetrate through the fixing plate and are screwed into fixing holes of the protruding blocks, the effect of fixing the annular plate and an annular scraping plate is achieved, when the piston rod shrinks, the annular scraping plate can scrape and clean impurities on the surface of the piston rod, and a drainage plate drains the impurities. The cleaning assembly is arranged to clean the piston rod contracted into the cylinder body, and the situation that when impurities adhere to the surface of the piston rod, the piston rod brings the impurities into the cylinder body, and the use quality of the subsequent oil cylinder is affected is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinders, and in particular relates to a durable hydraulic cylinder. Background Art

[0002] Chinese patent application No. 2019218640848 discloses a durable oil cylinder for hydraulic press, including a cylinder sealing cover, a cylinder body, and a piston mechanism. The durable oil cylinder for hydraulic press is mainly composed of a cylinder sealing cover, a cylinder screw fixing hole, a cylinder body and a piston mechanism. A cylinder fixing base is provided on the outside of the cylinder body near the bottom. The cylinder fixing base and the cylinder body are an integrated structure. The piston mechanism is installed inside the cylinder body. A cylinder sealing cover is provided at the upper port of the cylinder body. The piston rod of the piston mechanism passes through the piston rod mounting hole in the center of the cylinder sealing cover. The cylinder sealing cover is fixedly connected to the upper port of the cylinder body by screws. A piston rod is provided on the piston mechanism, and a piston is provided on the bottom end of the piston rod. A conductor coil and a dust ring are provided on the outside of the piston rod near the top. The oil cylinder has a reasonable design, a simple structure, a long service life, and is easy to install and fix.

[0003] The above-mentioned patent does not have a cleaning function and cannot clean the piston rod retracted into the cylinder body. When impurities adhere to the surface of the piston rod and the piston rod brings the impurities into the cylinder body, it will affect the quality of subsequent cylinder use. At the same time, the original device does not have the function of cooling the cylinder body. The temperature of the cylinder body will increase after long-term use. The increase in internal temperature of the cylinder body affects the service life of components. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the utility model provides a durable hydraulic cylinder with a cleaning function, which can clean the piston rod retracted into the cylinder body.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a durable hydraulic cylinder, comprising a cylinder body, a base is provided at the lower end of the cylinder body, a piston is provided inside the cylinder body, a piston rod is provided at the upper end of the piston, a cover is provided at the upper end of the cylinder body, a plurality of screw fixing holes are provided in the cover and the cylinder body, and a cleaning assembly is provided at the position of the upper end of the cover corresponding to the piston rod.

[0006] Preferably, the cleaning assembly includes an annular plate, an annular scraper, a fixed plate, a guide plate, a protrusion, a slide groove, a fixing bolt and a fixing hole, wherein an annular plate is provided on the upper side of the cover at a position corresponding to the piston rod, an annular scraper is provided on the upper end of the annular plate, a guide plate is provided on the outer side of the annular scraper, protrusions are provided at both ends of the annular plate, fixing plates are provided on both sides of the upper end of the cover at positions corresponding to the protrusions, a slide groove corresponding to the protrusion is provided in the fixing plate, the protrusion and the fixing plate are connected by fixing bolts, and a fixing hole corresponding to the fixing bolt is provided in the protrusion.

[0007] Preferably, after the annular plate and the annular scraper are installed, the inner wall of the annular plate and the surface of the piston rod, as well as the inner wall of the annular scraper and the surface of the piston rod are in close contact, and the annular scraper and the annular plate are a welded integral structure.

[0008] Preferably, after the protrusion enters the chute, the side edge of the protrusion is in close contact with the inner wall of the chute, and the guide plate is arranged on the outer side of the annular scraper in an inclined structure.

[0009] Preferably, two annular heat absorbing plates are arranged on the surface of the cylinder body, a plurality of heat-conducting columns are arranged inside the annular heat absorbing plates, a plurality of heat-dissipating fins are arranged outside the annular heat absorbing plates, a heat-conducting film is glued to the inner wall of the annular heat absorbing plates by glue, and a plurality of through holes are opened in the annular heat absorbing plates.

[0010] Preferably, one end of the heat-conducting column away from the annular heat-absorbing plate is tangent to the inner wall of the cylinder body, an angle of thirty degrees is formed between adjacent through holes, and both ends of the through holes are funnel structures.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model sets a cleaning component, sleeves the annular plate and the annular scraper onto the piston rod, and the protrusions at both ends of the annular plate enter the slide grooves of the fixing plate. Then the fixing bolts pass through the fixing plate and are screwed into the fixing holes of the protrusions to achieve the effect of fixing the annular plate and the annular scraper. When the piston rod contracts, the annular scraper can scrape and clean the impurities on the surface of the piston rod, and the guide plate can drain the impurities. By setting the cleaning component, the piston rod retracted into the cylinder body can be cleaned to avoid impurities adhering to the surface of the piston rod and the piston rod bringing the impurities into the cylinder body, which will affect the subsequent use quality of the oil cylinder.

[0013] 2. The utility model provides an annular heat absorbing plate. When the oil cylinder is in use, the internal temperature of the cylinder body increases. The heat-conducting column conducts the heat inside the cylinder body to the annular heat absorbing plate. The heat dissipating fins on the surface of the annular heat absorbing plate dissipate the heat from the annular heat absorbing plate, thereby achieving the effect of cooling the inside of the cylinder body, avoiding the increase in temperature of the cylinder body due to long-term use, which reduces the service life of the internal parts of the cylinder body. At the same time, a heat-conducting film is provided on the inner wall of the annular heat absorbing plate to make the annular heat absorbing plate have a better heat absorption effect, and a plurality of through holes are opened in the annular heat absorbing plate so that wind can flow through the through holes, thereby improving the heat dissipation rate of the annular heat absorbing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a cutaway stereogram of the utility model;

[0016] Figure 3 It is a cutaway stereoscopic view of the annular scraper of the utility model when it is installed;

[0017] Figure 4 This is a three-dimensional diagram of the annular heat absorbing plate of the utility model;

[0018] In the figure: 1. Cylinder body; 2. Cleaning assembly; 21. Annular plate; 22. Annular scraper; 23. Fixed plate; 24. Drain plate; 25. Bump; 26. Slide groove; 27. Fixing bolt; 28. Fixing hole; 3. Piston rod; 4. Cover; 5. Annular heat absorbing plate; 6. Base; 7. Piston; 8. Screw fixing hole; 9. Thermal conductive column; 10. Heat dissipation fin; 11. Thermal conductive film; 12. Through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0020] See also Figure 1-4 The utility model provides the following technical solutions: a durable hydraulic cylinder, including a cylinder body 1, a base 6 is arranged at the lower end of the cylinder body 1, a piston 7 is arranged inside the cylinder body 1, a piston rod 3 is arranged at the upper end of the piston 7, a cover 4 is arranged at the upper end of the cylinder body 1, a plurality of screw fixing holes 8 are arranged in the cover 4 and the cylinder body 1, and a cleaning component 2 is arranged at the upper end of the cover 4 corresponding to the piston rod 3.

[0021] Specifically, the cleaning assembly 2 includes an annular plate 21, an annular scraper 22, a fixed plate 23, a guide plate 24, a protrusion 25, a slide groove 26, a fixing bolt 27 and a fixing hole 28, wherein an annular plate 21 is arranged at a position on the upper side of the cover 4 corresponding to the piston rod 3, an annular scraper 22 is arranged at the upper end of the annular plate 21, a guide plate 24 is arranged on the outer side of the annular scraper 22, protrusions 25 are arranged at both ends of the annular plate 21, fixing plates 23 are arranged at positions corresponding to the protrusions 25 on both sides of the upper end of the cover 4, a slide groove 26 corresponding to the protrusion 25 is arranged in the fixing plate 23, the protrusion 25 and the fixing plate 23 are connected by a fixing bolt 27, and a fixing hole 28 corresponding to the fixing bolt 27 is arranged in the protrusion 25.

[0022] By adopting the above technical scheme, the annular plate 21 and the annular scraper 22 are sleeved on the piston rod 3, and the protrusions 25 at both ends of the annular plate 21 enter the slide groove 26 of the fixed plate 23, and then the fixing bolts 27 are passed through the fixed plate 23, and the fixing bolts 27 are screwed into the fixing holes 28 of the protrusions 25, so as to achieve the effect of fixing the annular plate 21 and the annular scraper 22. When the piston rod 3 retracts, the annular scraper 22 can scrape and clean the impurities on the surface of the piston rod 3, and the guide plate 24 drains the impurities. By setting the cleaning component 2, the piston rod 3 retracted into the cylinder body 1 can be cleaned to avoid impurities adhering to the surface of the piston rod 3. When the piston rod 3 brings the impurities into the cylinder body 1, it will affect the subsequent use quality of the oil cylinder.

[0023] Specifically, after the annular plate 21 and the annular scraper 22 are installed, the inner wall of the annular plate 21 and the surface of the piston rod 3 as well as the inner wall of the annular scraper 22 and the surface of the piston rod 3 are in close contact, and the annular scraper 22 and the annular plate 21 are a welded integral structure.

[0024] By adopting the above technical solution, the annular scraper 22 and the piston rod 3 are more closely fitted, and the cleaning effect on the piston rod 3 is better. The annular scraper 22 and the annular plate 21 are welded into an integrated structure, which is more sturdy and durable.

[0025] Specifically, after the protrusion 25 enters the chute 26 , the side of the protrusion 25 is in close contact with the inner wall of the chute 26 , and the guide plate 24 is arranged on the outer side of the annular scraper 22 in an inclined structure.

[0026] By adopting the above technical solution, the protrusion 25 is more stable after entering the slide groove 26, and the guide plate 24 is arranged on the outer side of the annular scraper 22 in an inclined structure, which has a better effect on impurity drainage.

[0027] When the present embodiment is used, when the durable hydraulic cylinder is used, the device is installed in a suitable position, and the cleaning component 2 is set, and the annular plate 21 and the annular scraper 22 are sleeved on the piston rod 3, and the protrusions 25 at both ends of the annular plate 21 enter the slide groove 26 of the fixing plate 23, and then the fixing bolts 27 are passed through the fixing plate 23, and the fixing bolts 27 are screwed into the fixing holes 28 of the protrusions 25, so as to achieve the effect of fixing the annular plate 21 and the annular scraper 22. When the piston rod 3 is retracted, the annular scraper 22 can scrape and clean the impurities on the surface of the piston rod 3, and the guide plate 24 drains the impurities. By setting the cleaning component 2, the piston rod 3 retracted into the cylinder body 1 can be cleaned to avoid impurities adhering to the surface of the piston rod 3. When the piston rod 3 brings the impurities into the cylinder body 1, it will affect the subsequent use quality of the oil cylinder; Example

[0028] The difference between this embodiment and embodiment 1 is that: two annular heat absorbing plates 5 are arranged on the surface of the cylinder body 1, a plurality of heat-conducting columns 9 are arranged inside the annular heat absorbing plates 5, a plurality of heat-dissipating fins 10 are arranged on the outer side of the annular heat absorbing plates 5, a heat-conducting film 11 is glued to the inner wall of the annular heat absorbing plates 5, and a plurality of through holes 12 are opened in the annular heat absorbing plates 5.

[0029] By adopting the above technical solution, the internal temperature of the cylinder body 1 increases when the oil cylinder is in use, and the heat-conducting column 9 conducts the internal heat of the cylinder body 1 to the annular heat-absorbing plate 5. The heat-dissipating fins 10 on the surface of the annular heat-absorbing plate 5 dissipate the heat from the annular heat-absorbing plate 5, thereby achieving the effect of cooling the inside of the cylinder body 1, avoiding the increase in temperature of the cylinder body 1 due to long-term use, which reduces the service life of the internal parts of the cylinder body 1. At the same time, a heat-conducting film 11 is arranged on the inner wall of the annular heat-absorbing plate 5 to make the annular heat-absorbing plate 5 more effective in absorbing heat, and a plurality of through holes 12 are opened in the annular heat-absorbing plate 5 so that wind can flow through the through holes 12, thereby improving the heat dissipation rate of the annular heat-absorbing plate 5.

[0030] Specifically, one end of the heat-conducting column 9 away from the annular heat-absorbing plate 5 is tangent to the inner wall of the cylinder body 1 , an angle of thirty degrees is formed between adjacent through holes 12 , and both ends of the through holes 12 are funnel structures.

[0031] By adopting the above technical solution, the heat-conducting column 9 is prevented from affecting the use of the piston 7 , and the plurality of through holes 12 can be distributed equidistantly, and the two ends of the through holes 12 are funnel-shaped to facilitate the entry of wind into the through holes 12 .

[0032] When this embodiment is used, by providing the annular heat absorbing plate 5, the temperature inside the cylinder body 1 increases when the oil cylinder is in use, and the heat conducting column 9 conducts the heat inside the cylinder body 1 to the annular heat absorbing plate 5. The heat dissipation fins 10 on the surface of the annular heat absorbing plate 5 dissipate the heat from the annular heat absorbing plate 5, thereby achieving the effect of cooling the inside of the cylinder body 1, avoiding the increase in temperature of the cylinder body 1 due to long-term use and reducing the service life of the internal parts of the cylinder body 1. At the same time, a heat conducting film 11 is provided on the inner wall of the annular heat absorbing plate 5 to make the annular heat absorbing plate 5 more effective in absorbing heat, and a plurality of through holes 12 are provided in the annular heat absorbing plate 5 so that wind can flow through the through holes 12, thereby improving the heat dissipation rate of the annular heat absorbing plate 5.

[0033] The structure and working principle of the cylinder body 1, piston rod 3, sealing cover 4, annular heat absorbing plate 5, base 6, piston 7 and screw fixing hole 8 in the utility model have been disclosed in a durable oil cylinder for a hydraulic press disclosed in Chinese patent application No. 2019218640848.

[0034] The working principle and use process of the utility model: When the durable hydraulic cylinder is used, the device is installed in a suitable position, and the cleaning component 2 is set, and the annular plate 21 and the annular scraper 22 are sleeved on the piston rod 3. The protrusions 25 at both ends of the annular plate 21 enter the slide groove 26 of the fixed plate 23, and then the fixing bolts 27 are passed through the fixed plate 23, and the fixing bolts 27 are screwed into the fixing holes 28 of the protrusions 25 to achieve the effect of fixing the annular plate 21 and the annular scraper 22. When the piston rod 3 is retracted, the annular scraper 22 can scrape and clean the impurities on the surface of the piston rod 3, and the guide plate 24 drains the impurities. By setting the cleaning component 2, the piston rod 3 retracted into the cylinder body 1 can be cleaned to avoid the piston When impurities are attached to the surface of the rod 3 and the piston rod 3 brings the impurities into the cylinder body 1, the subsequent use quality of the oil cylinder will be affected. By setting the annular heat absorbing plate 5, the internal temperature of the cylinder body 1 increases when the oil cylinder is in use, and the heat conducting column 9 conducts the internal heat of the cylinder body 1 to the annular heat absorbing plate 5. The heat dissipation fins 10 on the surface of the annular heat absorbing plate 5 dissipate the heat of the annular heat absorbing plate 5, thereby achieving the effect of cooling the inside of the cylinder body 1, avoiding the temperature of the cylinder body 1 to increase due to long-term use, reducing the service life of the internal parts of the cylinder body 1, and at the same time, a heat conducting film 11 is arranged on the inner wall of the annular heat absorbing plate 5 to make the annular heat absorbing plate 5 more effective in absorbing heat, and a plurality of through holes 12 are opened in the annular heat absorbing plate 5 so that wind can flow through the through holes 12, thereby improving the heat dissipation rate of the annular heat absorbing plate 5.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A durable hydraulic cylinder, comprising a cylinder body, characterized in that: The lower end of the cylinder body is provided with a base, a piston is provided inside the cylinder body, a piston rod is provided at the upper end of the piston, a cover is provided at the upper end of the cylinder body, a plurality of screw fixing holes are provided in the cover and the cylinder body, and a cleaning component is provided at the position corresponding to the piston rod at the upper end of the cover; The cleaning assembly includes an annular plate, an annular scraper, a fixed plate, a guide plate, a protrusion, a slide groove, a fixing bolt and a fixing hole, wherein an annular plate is arranged on the upper side of the cover at a position corresponding to the piston rod, an annular scraper is arranged on the upper end of the annular plate, a guide plate is arranged on the outer side of the annular scraper, protrusions are arranged at both ends of the annular plate, fixing plates are arranged on both sides of the upper end of the cover at positions corresponding to the protrusions, a slide groove corresponding to the protrusion is arranged in the fixing plate, the protrusion and the fixing plate are connected by fixing bolts, and a fixing hole corresponding to the fixing bolt is arranged in the protrusion.

2. A durable hydraulic cylinder according to claim 1, characterized in that: After the annular plate and the annular scraper are installed, the inner wall of the annular plate and the surface of the piston rod, as well as the inner wall of the annular scraper and the surface of the piston rod are tightly attached, and the annular scraper and the annular plate are a welded integral structure.

3. A durable hydraulic cylinder according to claim 1, characterized in that: After the protrusion enters the chute, the side edge of the protrusion is in close contact with the inner wall of the chute, and the guide plate is arranged on the outer side of the annular scraper in an inclined structure.

4. A durable hydraulic cylinder according to claim 1, characterized in that: Two annular heat absorbing plates are arranged on the surface of the cylinder body, a plurality of heat-conducting columns are arranged inside the annular heat absorbing plates, a plurality of heat-dissipating fins are arranged outside the annular heat absorbing plates, a heat-conducting film is glued to the inner wall of the annular heat absorbing plates by glue, and a plurality of through holes are opened in the annular heat absorbing plates.

5. A durable hydraulic cylinder according to claim 4, characterized in that: The end of the heat-conducting column away from the annular heat-absorbing plate is tangent to the inner wall of the cylinder body, an angle of thirty degrees is formed between adjacent through holes, and both ends of the through holes are in a funnel structure.

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