Hydraulic cylinder jacking device convenient to dissipate heat

Abstract

The hydraulic cylinder jacking device comprises a jacking oil cylinder, a scraping lantern ring is installed at the top end of the jacking oil cylinder, an oil cavity is formed in the jacking oil cylinder, a piston is installed in the center of the oil cavity, four sets of hydraulic rods are connected to the top end of the piston, and the top end of the hydraulic rod is connected with a hydraulic cylinder. And the hydraulic rod penetrates through the scraping lantern ring and extends to the outer side of the hydraulic cylinder. In addition, through the arrangement of a hydraulic rod and a piston, in the using process, gas in the jacking oil cylinder can be extruded through the piston, so that gas flow can flow through a heat dissipation pipe, heat dissipation is conducted on the piston, and residual gas flow can be discharged through a guide pipe, a main pipe and a ventilation pipe; and if the piston moves downwards, the space in the jacking oil cylinder is increased, external air is sucked into the jacking oil cylinder through the ventilation pipe, the main pipe, the guide pipe and the heat dissipation pipe, heat dissipation is further conducted on the piston, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The invention relates to the field of hydraulic cylinders, in particular to a hydraulic cylinder lifting device which is convenient for heat dissipation. Background Art

[0002] Cylinder lifting is a technology that uses the principle of hydraulic system to lift heavy objects through the thrust of hydraulic cylinder. Hydraulic oil enters the cylinder body of the hydraulic cylinder, pushing the piston to move, generating thrust and driving the load to lift. In the industrial system, hydraulic cylinder lifting device is a very common mechanical equipment used in all walks of life.

[0003] Prior art such as CN117307556B discloses a hydraulic cylinder lifting device, which specifically includes:

[0004] A hydraulic cylinder, with end covers at both ends of the hydraulic cylinder, an oil pipe passing through and fixedly connected to one side of the end cover, and one end of the oil pipe extending into the interior of the hydraulic cylinder;

[0005] A piston device, one side of which is fixedly connected to a piston rod, an end of the piston rod away from the piston device passes through an end cover and is slidably connected to the end cover;

[0006] The hydraulic cylinder comprises:

[0007] A cylinder body, wherein a cooling cavity is provided inside the cylinder body, a support plate is fixedly connected to the inner wall of the cooling cavity, and a heat dissipation hole is provided on the side of the support plate;

[0008] Cooling pipes, two groups of which are respectively connected to the right top and the left bottom of the cooling cavity, and one end of the cooling pipe away from the cooling cavity passes through the end cover and is connected to the coolant tank;

[0009] A cooling device is sleeved on the piston rod and slidably connected to the piston rod. The side of the cooling device away from the piston rod is fixedly connected to the inner wall of the coolant tank.

[0010] Although the prior art can dissipate heat for the piston rod through the heat dissipation structure, the heat dissipation structure is sleeved on the outside of the piston rod. When dissipating heat, only the outside of the piston rod can be dissipated. During the friction process of the piston rod, usually both the piston head and the piston rod will have friction, and the friction is mostly caused by the piston head. Therefore, when dissipating heat, the prior art has poor heat dissipation effect and cannot dissipate heat for the piston head simultaneously. Secondly, during the heat dissipation process, although the cooling structure is used to apply lubricating oil to the outside of the piston rod, the use environment of the existing jacking device usually has a lot of dust. Therefore, during use, it is easy to cause dust to adhere to the surface of the piston rod, and the lubricating oil will further cause dust accumulation. During the cleaning process, dust will accumulate on the outside of the lubrication structure, which may easily cause blockage for a long time. Summary of the invention

[0011] Based on this, the purpose of the present invention is to provide a hydraulic cylinder lifting device that is easy to dissipate heat, so as to solve the technical problems of poor cooling effect of the piston rod and inconvenient cleaning of dust attached to the surface of the piston rod.

[0012] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic cylinder lifting device that is convenient for heat dissipation, comprising a lifting cylinder, a scraping collar is installed on the top of the lifting cylinder, an oil chamber is opened inside the lifting cylinder, a piston is installed at the central position of the oil chamber, four groups of hydraulic rods are connected to the top of the piston, and the hydraulic rods penetrate the scraping collar and extend to the outside of the hydraulic cylinder, the four groups of hydraulic rods are combined into a cylinder, the bottom end of the hydraulic rod is engaged with the piston, the top end of the hydraulic rod is connected with a fixing collar, a plurality of groups of heat dissipation pipes are installed inside the piston, a guide pipe is connected to the central position of the piston, a sealing ring is connected to the outer wall of the piston, the piston is sealed with the inner wall of the oil chamber through the sealing ring, a groove is opened inside each group of the hydraulic rods, and the grooves form a main pipe after the four groups of hydraulic rods are spliced ​​together, a ventilation pipe is opened on the outside of the hydraulic rod, and the ventilation pipe is connected to the main pipe, and the bottom end of the main pipe is aligned with the guide pipe.

[0013] By adopting the above technical solution, the piston can be cooled by the flow of air, and the hydraulic rod can be lubricated by the lubricating ring during the extension process of the hydraulic rod.

[0014] The present invention is further configured such that a positioning rod is installed on the outer wall of the scraper collar, and a rotating scraper is rotatably connected to the outer side of the positioning rod. When the rotating scraper is in contact with the outer wall of the scraper collar, the end of the rotating scraper is in contact with the outer wall of the hydraulic rod.

[0015] Preferably, the scraper can be easily rotated to clean the impurities on the surface of the hydraulic rod.

[0016] The present invention is further configured such that the top end of the scraper collar is inclined, a sealing ring is provided at the bottom end of the scraper collar, and the scraper collar is fixed to the top end of the lifting cylinder through the sealing ring.

[0017] As a preferred embodiment, it is convenient to clean the impurities, and after cleaning, the impurities are cleaned through the inclined surface.

[0018] The present invention is further configured as follows: a fixing ring is installed at the top end of the hydraulic rod, the fixing ring fixes four groups of hydraulic rods together, a connecting pipe is opened on the outside of the guide tube, the connecting pipe protrudes on the outside of the piston, and a limiting ring is installed on the outer wall of the connecting pipe, the inner wall of the hydraulic rod is opened with a limiting groove matching the connecting pipe, and the hydraulic rod is clamped on the outer wall of the connecting pipe.

[0019] As a preferred embodiment, it is convenient to assemble and fix the four groups of hydraulic rods, and connect the hydraulic rods with the guide tubes in the piston.

[0020] The present invention is further configured such that a fixing seat is installed on the outer wall of the hydraulic rod, and a fixing bolt is installed inside the fixing seat, and the fixing seat is fixedly connected to the piston via the fixing bolt.

[0021] As a preferred embodiment, the hydraulic rod can be easily fixed.

[0022] The present invention is further configured such that a lubricating ring is installed inside the scraping ring, an adding hole is installed outside the lubricating ring, the adding hole extends to the outside of the scraping ring, a sponge ring is opened inside the lubricating ring, and the sponge ring is attached to the outer wall of the hydraulic rod.

[0023] As a preferred embodiment, it is convenient to lubricate the surface of the hydraulic rod.

[0024] The present invention is further configured such that the inner wall of the piston is provided with a plurality of heat dissipation layers, and the heat dissipation layers are in contact with the outer sides of the heat dissipation pipes, and the heat dissipation layers are annularly arranged and also in contact with the outer sides of the sealing rings.

[0025] Preferably, the heat can be transferred to the heat dissipation pipe through the heat dissipation layer, thereby further dissipating the heat of the piston.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] 1. The scraper ring, the rotating scraper ring and the lubricating ring are arranged in the present invention, so that when the hydraulic rod is extended, the surface of the hydraulic rod can be lubricated by the sponge on the inner wall of the lubricating ring, and after lubrication, the wear of the hydraulic rod is reduced. In the process of returning the hydraulic rod, the rotating scraper ring is attached to the outer side of the scraper ring by gravity, so that the surface of the hydraulic rod is cleaned in the process of returning the hydraulic rod.

[0028] 2. The present invention also uses the hydraulic rod and piston to squeeze the gas inside the jacking cylinder through the piston during use, so that the air flow will flow through the heat dissipation pipe, thereby dissipating the heat of the piston, and the remaining air flow will be discharged through the guide pipe, the main pipe and the ventilation pipe. When the hydraulic rod returns to its position, the piston moves downward to increase the space in the jacking cylinder, and the outside air is sucked into the jacking cylinder through the ventilation pipe, the main pipe, the guide pipe and the heat dissipation pipe, thereby further dissipating the heat of the piston and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the cross section of the scraping collar of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the cross section of the jacking cylinder of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the hydraulic rod of the present invention being unfolded;

[0033] Figure 5 It is a structural schematic diagram of the hydraulic rod of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the cross section of the piston head of the present invention;

[0035] Figure 7 It is a schematic structural diagram of the connection between the scraper collar and the hydraulic rod of the present invention.

[0036] Description of reference numerals:

[0037] 1. Lifting cylinder; 101. Oil chamber; 2. Scraping ring; 201. Positioning rod; 3. Rotating scraper; 4. Hydraulic rod; 401. Main pipe; 402. Ventilation pipe; 403. Fixed seat; 404. Limiting groove; 5. Fixed ring; 6. Lubricating ring; 601. Adding hole; 602. Sponge ring; 7. Piston; 701. Heat dissipation pipe; 702. Sealing ring; 703. Connecting pipe; 7031. Limiting ring; 704. Guide pipe; 705. Heat dissipation layer. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The following describes an embodiment of the present invention based on its overall structure.

[0040] First embodiment:

[0041] See also Figures 1 to 3 A hydraulic cylinder lifting device that is convenient for heat dissipation comprises a lifting cylinder 1, a scraper collar 2 is installed at the top of the lifting cylinder 1, an oil chamber 101 is opened inside the lifting cylinder 1, a piston 7 is installed at the central position of the oil chamber 101, four groups of hydraulic rods 4 are connected to the top of the piston 7, the four groups of hydraulic rods 4 are combined into a cylinder, a fixing seat 403 is installed on the outer wall of the hydraulic rod 4, and a fixing bolt is installed inside the fixing seat 403, the fixing seat 403 is fixedly connected to the piston 7 through the fixing bolt, and the hydraulic rod 4 passes through the scraper collar 2 and extends to the outside of the hydraulic cylinder, the bottom end of the hydraulic rod 4 is engaged with the piston 7, the top of the hydraulic rod 4 is connected to a fixing collar 5, the top of the hydraulic rod is installed with a fixing collar 5, the fixing collar 5 fixes the four groups of hydraulic rods 4 together, and it is convenient for the hydraulic rod 4 to lift the external equipment.

[0042] See also Figure 2 and Figure 7 A lubricating ring 6 is installed inside the scraper ring 2, and an adding hole 601 is installed outside the lubricating ring 6. The adding hole 601 extends to the outside of the scraper ring 2. A sponge ring 602 is opened inside the lubricating ring 6. The sponge ring 602 is attached to the outer wall of the hydraulic rod 4. When the hydraulic rod 4 is extended, the surface of the hydraulic rod 4 can be lubricated by the lubricating ring 6, thereby reducing the wear of the hydraulic rod 4.

[0043] See also Figures 3 to 6 , multiple groups of heat dissipation pipes 701 are installed inside the piston 7, a guide pipe 704 is connected to the central position of the piston 7, a sealing ring 702 is connected to the outer wall of the piston 7, the piston 7 is sealed with the inner wall of the oil chamber 101 through the sealing ring 702, a connecting pipe 703 is opened on the outer side of the guide pipe 704, the connecting pipe 703 is protruded and located on the outer side of the piston 7, and a limiting ring 7031 is installed on the outer wall of the connecting pipe 703, a limiting groove 404 matching the connecting pipe 703 is opened on the inner wall of the hydraulic rod 4, the hydraulic rod 4 is clamped on the outer wall of the connecting pipe 703, and each group of hydraulic rods 4 A groove is provided inside, and after four groups of hydraulic rods 4 are spliced ​​together, the groove forms a main pipe 401, and a ventilation pipe 402 is provided on the outside of the hydraulic rod 4, and the ventilation pipe 402 is connected to the main pipe 401, and the bottom end of the main pipe 401 is aligned with the guide pipe 704. During the pushing process of the hydraulic rod 4, the air inside the jacking cylinder 1 can be squeezed by the piston 7, and the air is discharged through the heat dissipation pipe 701, the guide pipe 704, the main pipe 401 and the ventilation pipe 402. While the piston 7 is dissipated, the air in the jacking cylinder 1 is discharged to avoid air interference with the jacking effect.

[0044] See also Figure 2 and Figure 7 The top of the scraper collar 2 is tilted, a sealing ring is provided at the bottom of the scraper collar 2, and the scraper collar 2 is fixed to the top of the lifting cylinder 1 through the sealing ring. A positioning rod 201 is installed on the outer wall of the scraper collar 2, and a rotating scraper 3 is rotatably connected to the outer side of the positioning rod 201. When the rotating scraper 3 is in contact with the outer wall of the scraper collar 2, the end of the rotating scraper 3 is in contact with the outer wall of the hydraulic rod 4. The rotating scraper 3 will move downward and cling to the outer side of the top of the scraper collar 2 under the drive of gravity and the hydraulic rod 4, and the outer side of the hydraulic rod 4 will be cleaned by the rotating scraper 3.

[0045] In the above embodiment, please refer to the figure for details. The inner wall of the piston 7 is provided with multiple groups of heat dissipation layers 705, and the heat dissipation layers 705 are in contact with the outer side of the heat dissipation pipe 701, and the heat dissipation layer 705 is annularly arranged and in contact with the outer side of the sealing ring 702, so as to facilitate the heat dissipation of the piston 7 and discharge the heat through the airflow flowing through the heat dissipation pipe 701.

[0046] During the use of the hydraulic cylinder, when the jacking cylinder needs to be used, the jacking cylinder 1 is connected to the external hydraulic source, and the lubricating oil is injected into the lubricating ring 6 through the adding hole 601. The lubricating oil lubricates the surface of the hydraulic rod 4 through the sponge ring 602. During use, the fixed collar 5 is connected to the external heavy object, and then the external hydraulic source is started. The hydraulic oil enters the oil chamber 101, and the hydraulic oil pushes the piston 7 to move upward. At this time, the piston 7 begins to rise due to friction and extrusion temperature, and the piston 7 moves upward to squeeze the jacking cylinder 1. The air in the upper part enters the interior of the piston 7 through the heat dissipation pipe 701, and the airflow dissipates heat for the piston 7. Then the airflow flows upward through the guide pipe 704, and the guide pipe 704 is connected to the main pipe 401, so that the airflow enters the ventilation pipe 402 through the main pipe 401, and is discharged to the outside of the equipment through the ventilation pipe 402, thereby dissipating heat for the piston 7. In addition, during the removal of the hydraulic rod 4, the sponge ring 602 applies sufficient lubricating oil to the surface of the hydraulic rod 4, thereby reducing the wear of the hydraulic rod 4, and the hydraulic rod 4 supports the external equipment;

[0047] When the support is completed, the external equipment needs to be moved down. At this time, the hydraulic oil in the oil chamber 101 is extracted, and the piston 7 moves downward. The upper part of the lifting cylinder 1 presents a negative pressure. At this time, the outside air enters the lifting cylinder 1 through the ventilation pipe 402, the main pipe 401, the guide pipe 704, and the heat dissipation pipe 701. The piston 7 is further cooled by the low-temperature airflow from the outside. At the same time, the rotating scraper 3 will move downward and close to the outside of the top of the scraping ring 2 under the drive of gravity and the hydraulic rod 4. The outside of the hydraulic rod 4 is cleaned by the rotating scraper 3 to improve the cleaning effect. In the subsequent cleaning process, the hydraulic rod 4 is extended again. At this time, under the push of the hydraulic rod 4, the rotating scraper 3 moves downward and separates, thereby crushing and cleaning the impurities scraped off from above, reducing the accumulation of impurities.

[0048] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A hydraulic cylinder lifting device for facilitating heat dissipation, comprising a lifting cylinder (1), characterized in that: A scraper collar (2) is installed at the top of the lifting oil cylinder (1), an oil chamber (101) is provided inside the lifting oil cylinder (1), a piston (7) is installed at the central position of the oil chamber (101), the top of the piston (7) is connected to four groups of hydraulic rods (4), and the hydraulic rods (4) penetrate the scraper collar (2) and extend to the outside of the hydraulic cylinder, the four groups of hydraulic rods (4) are combined into a cylinder, the bottom end of the hydraulic rod (4) is engaged with the piston (7), the top end of the hydraulic rod (4) is connected to the fixing collar (5), and the inside of the piston (7) is equipped with a plurality of heat dissipation devices. The piston (7) is connected to a guide tube (704) at the central position, the outer wall of the piston (7) is connected to a sealing ring (702), the piston (7) is sealed with the inner wall of the oil chamber (101) through the sealing ring (702), each group of hydraulic rods (4) is provided with a groove inside, and after the four groups of hydraulic rods (4) are spliced ​​together, the groove forms a main pipe (401), the outer side of the hydraulic rod (4) is provided with a ventilation pipe (402), and the ventilation pipe (402) is connected to the main pipe (401), and the bottom end of the main pipe (401) is aligned with the guide tube (704).

2. A hydraulic cylinder lifting device for heat dissipation according to claim 1, characterized in that: A positioning rod (201) is installed on the outer wall of the scraping collar (2), and a rotating scraper (3) is rotatably connected to the outer side of the positioning rod (201). When the rotating scraper (3) is in contact with the outer wall of the scraping collar (2), the end of the rotating scraper (3) is in contact with the outer wall of the hydraulic rod (4).

3. A hydraulic cylinder lifting device for heat dissipation according to claim 2, characterized in that: The top end of the scraper collar (2) is arranged at an angle, the bottom end of the scraper collar (2) is provided with a sealing ring, and the scraper collar (2) is fixed to the top end of the lifting cylinder (1) via the sealing ring.

4. The hydraulic cylinder lifting device for heat dissipation according to claim 1, characterized in that: A fixing collar (5) is installed at the top end of the hydraulic rod (4), and the fixing collar (5) fixes the four groups of hydraulic rods (4) together. A connecting pipe (703) is provided on the outer side of the guide tube (704), and the connecting pipe (703) protrudes outward from the outer side of the piston (7), and a limiting ring (7031) is installed on the outer wall of the connecting pipe (703). A limiting groove (404) matching the connecting pipe (703) is provided on the inner wall of the hydraulic rod (4), and the hydraulic rod (4) is engaged with the outer wall of the connecting pipe (703).

5. The hydraulic cylinder lifting device for facilitating heat dissipation according to claim 1, characterized in that: A fixing seat (403) is installed on the outer wall of the hydraulic rod (4), and a fixing bolt is installed inside the fixing seat (403). The fixing seat (403) is fixedly connected to the piston (7) via the fixing bolt.

6. The hydraulic cylinder lifting device for facilitating heat dissipation according to claim 1, characterized in that: A lubricating ring (6) is installed inside the scraping collar (2), and an insertion hole (601) is installed outside the lubricating ring (6). The insertion hole (601) extends to the outside of the scraping collar (2). A sponge ring (602) is opened inside the lubricating ring (6), and the sponge ring (602) is attached to the outer wall of the hydraulic rod (4).

7. The hydraulic cylinder lifting device for facilitating heat dissipation according to claim 1, characterized in that: The inner wall of the piston (7) is provided with a plurality of heat dissipation layers (705), and the heat dissipation layers (705) are in contact with the outer side of the heat dissipation pipe (701), and the heat dissipation layers (705) are arranged in an annular shape and are also in contact with the outer side of the sealing ring (702).

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