Hydraulic hoist convenient to maintain

Abstract

The invention discloses a hydraulic hoist convenient to maintain, and belongs to the field of hydraulic hoists, the hydraulic hoist convenient to maintain comprises a hydraulic unit, the left side of a hydraulic cylinder is provided with an oil leakage detection component, the oil leakage detection component comprises a cover body arranged on the left side of the hydraulic cylinder, the lower side of the interior of the cover body is provided with an embedded groove, and the interior of the embedded groove is slidably connected with a supporting plate; according to the device, the supporting plate arranged in the embedded groove lifts hydraulic oil, meanwhile, a warning lamp can be controlled to give an alarm, due to the fact that the hydraulic oil can be guided into the embedded groove after oil leakage of a hydraulic cylinder occurs, the hydraulic oil can be guided into the embedded groove, the hydraulic oil can be guided into the embedded groove, and the hydraulic oil can be guided into the embedded groove; and after the supporting plate is pressed by the hydraulic oil, the warning lamp is started for warning, so that a maintainer is reminded to maintain and replace in time, meanwhile, the hydraulic cylinder is closed, the quantity of the hydraulic oil in the hydraulic cylinder is reduced, and the purpose of reducing leakage of the hydraulic oil is achieved.

Description

Technical Field

[0001] The invention relates to the field of hydraulic gate hoists, and more particularly to a hydraulic gate hoist which is easy to maintain. Background Art

[0002] A hydraulic gate hoist is generally composed of a hydraulic system and a hydraulic cylinder. The hydraulic system includes a power unit, a control and adjustment device, an auxiliary device, etc. Multiple gate hoists can share one hydraulic system. The power unit is generally a hydraulic pump, which converts the mechanical energy output by the prime mover (such as a motor) into hydraulic energy. The control and adjustment device refers to a hydraulic control valve group, including a throttle valve, a reversing valve, a relief valve and other valve groups. They control and adjust the flow, direction, pressure, etc. of the hydraulic oil to meet various performance requirements of the hydraulic system. Auxiliary devices include oil tanks, oil pipes, pipe joints, pressure gauges, oil filters, etc. The hydraulic cylinder is an actuator in the hydraulic transmission, which converts the hydraulic energy of the hydraulic oil into mechanical energy. The hydraulic cylinder is composed of a cylinder body, an end cover, a piston, a piston rod, a lifting head and other parts.

[0003] In daily use, it is necessary to check whether the inner wall of the oil cylinder is rusted or worn, whether the surface of the piston rod is intact, and whether the sealing performance of the oil cylinder is good. If there are single-sided grinding marks on the inner wall of the oil cylinder or the piston rod, it is necessary to analyze the cause and take measures in time. At the same time, the pressure holding performance of the oil cylinder is also the focus of maintenance. After the maintenance is completed, the pressure holding test should be carried out according to the design requirements to ensure that there is no oil leakage. The piston ring and oil seal are prone to breakage, loss of elasticity, deformation or severe wear. Once these problems are found, they should be replaced immediately to ensure the sealing performance of the oil cylinder. Therefore, it is necessary to regularly maintain and overhaul the multiple components of the hydraulic gate hoist; In the prior art, since the seals in the hydraulic cylinder will be damaged due to aging and wear during long-term use, the hydraulic cylinder will leak oil. After the hydraulic cylinder leaks oil, the hydraulic cylinder will not be able to obtain sufficient hydraulic pressure to drive the load, thereby reducing its working efficiency. If it is not repaired and replaced in time, it may even fail to work normally. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a hydraulic gate hoist that is easy to maintain.

[0005] To solve the above problems, the present invention adopts the following technical solution, which can realize that after the hydraulic cylinder leaks oil, the hydraulic oil will be introduced into the embedded groove and the start warning light will be warned, so as to promptly remind the maintenance personnel to carry out maintenance and replacement.

[0006] A hydraulic gate hoist that is easy to maintain, comprising a hydraulic unit and a hydraulic cylinder fixedly installed on the lower side of the hydraulic unit, an oil leakage detection component is provided on the left side of the hydraulic cylinder, and the oil leakage detection component comprises a cover body arranged on the left side of the hydraulic cylinder; An embedding groove is provided on the lower inner side of the cover body, a support plate is slidably connected to the inside of the embedding groove, a delivery pipe is fixedly connected to the lower side of the support plate, a first pressure spring is fixedly connected to the front and rear sides of the lower end of the support plate, the bottom end of the first pressure spring is fixedly connected to the lower inner side of the embedding groove, a limiting cylinder is fixedly connected to the front side of the lower end of the support plate, a first striker is slidably connected to the inside of the limiting cylinder, and the first striker passes through the lower side of the limiting cylinder, a first pressure sensor is fixedly installed on the lower inner side of the embedding groove, and the bottom end of the first striker is squeezed and contacted with the upper side of the first pressure sensor after moving downward, and a warning light is fixedly installed on the front side of the hydraulic unit.

[0007] Furthermore, the hydraulic cylinder includes a cylinder body, a piston rod, a piston and an end cover, the cylinder body is sleeved on the outside of the piston rod, the right end of the piston rod is fixedly connected to the left side of the piston, the piston is slidably connected to the inside of the cylinder body, the end cover is movably installed on the left side of the cylinder body, the end cover is sleeved on the outside of the piston rod, the oil leakage detection component is arranged on the left side of the end cover, the center of the support plate and the delivery pipe are both hollow structures, the hydraulic unit, the first pressure sensor and the warning light are all electrically connected, the outside of the piston rod and the outside of the cylinder body are jointly provided with an out-of-cylinder detection component, and the out-of-cylinder detection component includes a fixing ring fixedly connected to the left side of the outside of the piston rod.

[0008] Furthermore, the front and rear parts of the right end of the fixed ring are fixedly connected to a connecting rod, the right end of the connecting rod is fixedly connected to a first movable ring, the first movable ring is slidably mounted on the outside of the cylinder body, the inside of the first movable ring is slidably connected to a second movable ring, and the second movable ring is slidably connected to the outside of the cylinder body.

[0009] Furthermore, second strikers are fixedly connected to the left and right sides of the second movable ring, second pressure springs are fixedly connected between the interior of the first movable ring and the left and right sides of the second movable ring, second pressure sensors are fixedly installed on both sides of the interior of the first movable ring, and the end of the second striker away from the second movable ring moves and is squeezed into contact with the side of the second pressure sensor close to the second movable ring, and the second pressure sensor is electrically connected to the hydraulic unit.

[0010] Furthermore, a scraping assembly is provided on the right side of the fixing ring and the inner and outer sides of the cover body. The scraping assembly includes a column fixedly connected to the lower part of the right end of the fixing ring.

[0011] Furthermore, the front and rear parts of the outer side of the column are fixedly connected with a fixing rod, the outer lower part of the cover body is rotatably connected with a sleeve, the interior of the sleeve is provided with a guide groove, and the number of the guide grooves is two, both of which are threaded and staggered, and the fixing rod is slidably connected in the guide groove after moving to the right, the outer side of the sleeve is fixedly connected with a first gear ring, the interior of the cover body is rotatably connected with a second gear ring, the first gear ring and the second gear ring are meshed with each other, and the right side annular array of the second gear ring has a fixedly connected scraper, and the right side of the scraper slides in contact with the left side of the end cover.

[0012] Furthermore, an oil drain component is provided at the right end of the column and inside the cover body, and the oil drain component includes a first magnetic block slidably connected to the inside of the delivery pipe.

[0013] Furthermore, a second magnetic block is fixedly connected to the right end of the column. When the second magnetic block moves to the right, it magnetically repels from the first magnetic block. When the first magnetic block moves downward, it blocks the conveying pipe.

[0014] Furthermore, an anti-leakage component is provided on the left side of the end cover, and the anti-leakage component includes an internal thread groove opened on the left side of the end cover, and an external thread ring is fixedly connected to the right side of the cover body, the internal thread groove is threadedly connected to the external thread ring, and the shape of the external thread ring is adapted to the shape of the internal thread groove.

[0015] Furthermore, a cleaning assembly is provided on the left side of the cover body, and the cleaning assembly includes a cleaning ring fixedly connected to the left side of the cover body, a chamfer is provided on the left side of the outer end of the cleaning ring, and the cleaning ring is slidably connected to the outer side of the piston rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can control the alarm light to sound an alarm while supporting the hydraulic oil through the support plate inside the embedded groove. When the hydraulic cylinder leaks, the hydraulic oil will be introduced into the embedded groove, and the hydraulic oil will press the support plate to start the alarm light to warn the maintenance personnel to carry out maintenance and replacement in time. At the same time, the hydraulic cylinder is also shut down to reduce the amount of hydraulic oil inside the hydraulic cylinder, so as to achieve the purpose of reducing hydraulic oil leakage.

[0017] (2) The second movable ring of the present invention can start the warning light to sound a warning when the cylinder body expands, and can also shut down the hydraulic cylinder. When the outer side of the cylinder body expands, the second movable ring cannot move freely outside the cylinder body, and the warning light can be controlled to sound a warning. This can not only promptly remind maintenance personnel to carry out repairs and replacements, but also facilitate finding the area where the hydraulic cylinder fails, thereby improving the maintenance efficiency of maintenance personnel.

[0018] (3) The scraper provided in the present invention can scrape off the hydraulic oil attached to the surface of the end cover. When the hydraulic cylinder is closed, the scraper rotates through the hanging ring rotated by the second gear ring to scrape off the hydraulic oil remaining on the surface of the end cover, so that the remaining hydraulic oil can quickly enter the embedding groove. After the hydraulic oil remaining on the surface of the end cover is scraped off, it can effectively prevent the maintenance personnel from getting the hydraulic oil on their hands during the maintenance process, thereby preventing the maintenance efficiency from being affected due to slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cross-section structure of the present invention; Figure 3 It is a schematic cross-sectional structural diagram of the cover body of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the end cover of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of point A; Figure 6 It is a schematic cross-sectional structural diagram of the delivery pipe of the present invention; Figure 7 It is a cross-sectional flat schematic diagram of the sleeve of the present invention; Figure 8 It is a schematic cross-sectional structural diagram of the first movable ring of the present invention.

[0020] Description of the numbers in the figure: 1. Hydraulic unit; 2. Hydraulic cylinder; 21. Cylinder body; 22. Piston rod; 23. Piston; 24. End cover; 3. Oil leakage detection component; 31. Cover body; 32. Embedding groove; 33. Support plate; 331. Delivery pipe; 34. First pressure spring; 35. Limiting cylinder; 351. First striker; 36. First pressure sensor; 37. Warning light; 38. Cylinder external detection component; 381. Fixed ring; 382. Connecting rod; 383. First movable ring; 384. Second movable ring Ring; 385, second striker; 386, second pressure spring; 387, second pressure sensor; 39, scraper assembly; 391, column; 392, fixing rod; 393, sleeve; 394, guide groove; 395, first gear ring; 396, second gear ring; 397, scraper; 4, oil discharge component; 41, first magnetic block; 42, second magnetic block; 43, anti-leakage assembly; 431, internal thread groove; 432, external thread ring; 44, cleaning assembly; 441, cleaning ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 8 A hydraulic gate hoist that is easy to maintain, comprising a hydraulic unit 1 and a hydraulic cylinder 2 fixedly mounted on the lower side of the hydraulic unit 1, an oil leakage detection component 3 is provided on the left side of the hydraulic cylinder 2, and the oil leakage detection component 3 comprises a cover body 31 arranged on the left side of the hydraulic cylinder 2; An embedding groove 32 is provided on the inner lower side of the cover body 31, and a support plate 33 is slidably connected to the inside of the embedding groove 32, and a delivery pipe 331 is fixedly connected to the lower side of the support plate 33, and a first pressure spring 34 is fixedly connected to the front and rear sides of the lower end of the support plate 33, and the bottom end of the first pressure spring 34 is fixedly connected to the inner lower side of the embedding groove 32, and a limiting cylinder 35 is fixedly connected to the front side of the lower end of the support plate 33, and a first striker 351 is slidably connected to the inside of the limiting cylinder 35, and the first striker 351 passes through the lower side of the limiting cylinder 35, and a first pressure sensor 36 is fixedly installed on the inner lower side of the embedding groove 32, and the bottom end of the first striker 351 moves downward and is squeezed and contacted with the upper side of the first pressure sensor 36, and a warning light 37 is fixedly installed on the front side of the hydraulic unit 1.

[0023] The hydraulic cylinder 2 includes a cylinder body 21, a piston rod 22, a piston 23 and an end cover 24. The cylinder body 21 is sleeved on the outside of the piston rod 22. The right end of the piston rod 22 is fixedly connected to the left side of the piston 23. The piston 23 is slidably connected to the inside of the cylinder body 21. The end cover 24 is movably installed on the left side of the cylinder body 21. The end cover 24 is sleeved on the outside of the piston rod 22. The oil leakage detection component 3 is arranged on the left side of the end cover 24. The center of the support plate 33 and the delivery pipe 331 are both hollow structures. The hydraulic unit 1, the first pressure sensor 36 and the warning light 37 are all electrically connected.

[0024] By adopting the above technical solution, firstly, when the hydraulic unit 1 is running, the hydraulic pump therein will convert the mechanical energy output by the prime mover into hydraulic energy, and then cooperate with the oil tank and its internal structure to form a complete hydraulic circuit, so that the hydraulic oil pushes the piston 23 inside the cylinder body 21, and after the piston 23 is pushed, it will drive the piston rod 22 to freely extend and retract to one side through the end cover 24. When oil leakage occurs at the connection between the piston rod 22 and the end cover 24 due to wear of the seal, the hydraulic oil itself has strong fluidity, and the leaked hydraulic oil will flow downward due to its own weight, and then be introduced into the embedded groove 32 inside the cover body 31, and be above the support plate 33. As the amount of hydraulic oil above the support plate 33 increases, the support plate 33 will begin to sink, and drive the limit cylinder 35 to move downward, and at the same time When the first pressure spring 34 is squeezed, the limit rod 35 which can move freely inside it will also be pushed downward with it during the downward movement of the limit cylinder 35, and after contacting the first pressure sensor 36, the first pressure sensor 36 transmits information to the controller of the hydraulic unit 1, and the controller starts the warning light 37 after receiving the signal to give an alarm, and drives the piston rod 22 to move in the direction of the hydraulic unit 1. When the hydraulic cylinder 2 leaks oil, the hydraulic oil will be introduced into the embedded groove 32, and the hydraulic oil will press the support plate 33 to start the warning light 37 to warn, so as to promptly remind the maintenance personnel to carry out maintenance and replacement. At the same time, after starting the warning light 37 to warn, the hydraulic cylinder 2 will be closed, so that the amount of hydraulic oil in the hydraulic cylinder 2 is reduced, so as to achieve the purpose of reducing hydraulic oil leakage.

[0025] like Figure 1 , Figure 2 and Figure 8 As shown, the outer side of the piston rod 22 and the outer side of the cylinder body 21 are jointly provided with an outer cylinder detection component 38 , and the outer cylinder detection component 38 includes a fixing ring 381 fixedly connected to the left side of the outer side of the piston rod 22 .

[0026] The front and rear parts of the right end of the fixed ring 381 are fixedly connected to the connecting rod 382, ​​and the right end of the connecting rod 382 is fixedly connected to the first movable ring 383, which is slidably mounted on the outside of the cylinder body 21. The inside of the first movable ring 383 is slidably connected to the second movable ring 384, which is slidably connected to the outside of the cylinder body 21.

[0027] The left and right sides of the second movable ring 384 are fixedly connected with second strikers 385, the inside of the first movable ring 383 and the left and right sides of the second movable ring 384 are fixedly connected with second pressure springs 386, the inside of the first movable ring 383 and the left and right sides of the second movable ring 384 are fixedly connected with second pressure sensors 387, the end of the second striker 385 away from the second movable ring 384 moves and is squeezed and contacted with the side of the second pressure sensor 387 close to the second movable ring 384, and the second pressure sensor 387 is electrically connected to the hydraulic unit 1.

[0028] By adopting the above technical solution, first, during the closing process of the hydraulic cylinder 2, the piston rod 22 will be gradually retracted into the interior of the cylinder body 21, and the fixed ring 381 will gradually approach the end cover 24. During the movement of the fixed ring 381, the fixed ring 381 will drive the first movable ring 383 to slide on the outside of the cylinder body 21 through the connecting rod 382, ​​but will not contact the outside of the cylinder body 21, while the second movable ring 384 inside the movable ring will slide on the outside of the cylinder body 21 and will always contact the outside of the cylinder body 21. If the outside of the cylinder body 21 expands, the outer diameter of the cylinder body 21 will change, making it impossible for the second movable ring 384 to slide normally on the outside of the cylinder body 21, while the first movable ring 383 that is not in contact with the cylinder body 21 can still move, so that the second movable ring 384 starts to move relative to the first movable ring 383 in the first movable ring. The movable ring 383 moves internally, and the direction of movement of the second movable ring 384 will be opposite to the moving direction of the first movable ring 383, so that the second movable ring 384 squeezes the second pressure spring 386 in the corresponding direction. At the same time, the second striker 385 fixed by the second movable ring 384 will also contact the second pressure sensor 387. The second pressure sensor 387 will transmit information to the controller of the hydraulic unit 1. After receiving the signal, the controller starts the warning light 37 to warn and drives the hydraulic cylinder 2 to stop running. When the outer side of the cylinder body 21 expands, the second movable ring 384 will not be able to move freely on the outer side of the cylinder body 21, and the warning light 37 will be controlled to issue a warning, which can not only promptly remind maintenance personnel to carry out repairs and replacements, but also facilitate finding the area where the hydraulic cylinder 2 fails, thereby improving the maintenance efficiency of maintenance personnel.

[0029] like Figures 3 to 5 and Figure 7 As shown, a scraping assembly 39 is provided on the right side of the fixing ring 381 and the inner and outer sides of the cover body 31 . The scraping assembly 39 includes a column 391 fixedly connected to the lower right end of the fixing ring 381 .

[0030] The front and rear parts of the outer side of the column 391 are fixedly connected with a fixing rod 392, and the outer lower part of the cover body 31 is rotatably connected with a sleeve 393. A guide groove 394 is provided inside the sleeve 393, and the number of the guide grooves 394 is two. The two guide grooves 394 are staggered in a threaded shape. After the fixing rod 392 moves to the right, it is slidably connected in the guide groove 394. The outer side of the sleeve 393 is fixedly connected with a first gear ring 395, and the inside of the cover body 31 is rotatably connected with a second gear ring 396. The first gear ring 395 and the second gear ring 396 are meshed with each other. The right side annular array of the second gear ring 396 has a fixedly connected scraper 397, and the right side of the scraper 397 slides in contact with the left side of the end cover 24.

[0031] By adopting the above technical solution, first, when the fixing ring 381 is close to the end cover 24, if the column 391 fixed on the right side of the fixing ring 381 is inserted into the inside of the rotating drum under the cover body 31, the two fixing rods 392 on the outside of the column 391 will enter the guide groove 394 inside the sleeve 393. As the two fixing rods 392 respectively enter the two bolt-shaped staggered guide grooves 394, the sleeve 393 that can rotate on the lower side of the cover body 31 will drive the first toothed ring 395 on the outside to start rotating, and the first toothed ring 395 is meshed with the second toothed ring 396 inside the cover body 31, so that the first toothed ring 395 will drive the second toothed ring 396 to rotate after the first toothed ring 395 rotates. The second toothed ring 396 rotates inside the cover body 31 and drives the scraper 397 in contact with the end cover 24 to rotate. After the scraper 397 rotates, the hydraulic oil originally attached to the surface of the end cover 24 will be scraped off. As the hydraulic cylinder 2 is in the process of closing, the scraper 397 rotates through the hanging ring rotated by the second toothed ring 396 to scrape off the hydraulic oil remaining on the surface of the end cover 24, so that the remaining hydraulic oil can quickly enter the embedded groove 32. After the hydraulic oil remaining on the surface of the end cover 24 is scraped off, it can effectively prevent the maintenance personnel from getting the hydraulic oil stuck on their hands during the maintenance process, so as to prevent the maintenance efficiency from being affected due to slipping.

[0032] like Figure 6 and Figure 7 As shown, the right end of the column 391 and the inside of the cover body 31 are both provided with an oil discharge component 4, and the oil discharge component includes a first magnetic block 41 slidably connected to the inside of the delivery pipe 331.

[0033] The right end of the column 391 is fixedly connected with the second magnetic block 42 . When the second magnetic block 42 moves to the right, it magnetically repels from the first magnetic block 41 . When the first magnetic block 41 moves downward, it blocks the delivery pipe 331 .

[0034] By adopting the above technical solution, first, when the two fixing rods 392 on the outside of the column 391 pass through the sleeve 393, the second magnetic block 42 at the right end of the column 391 will be located at the opening below the delivery tube 331, and will correspond to the position of the first magnetic block 41 inside the delivery tube 331. The first magnetic block 41 and the second magnetic block 42 are magnetically repelled from each other. After the repulsive force generated by the second magnetic block 42 is generated relative to the movable first magnetic block 41, it will be lifted, so that the delivery tube 331 loses the blockage from the first magnetic block 41, and is now embedded in the groove 32 for collection. The hydraulic oil will be gradually discharged through the connection between the support plate 33 and the delivery pipe 331, and after the column 391 drives the second magnetic block 42 to leave, the first magnetic block 41 will re-block the delivery pipe 331. Since the second magnetic block 42 fixed to the right end of the column 391 corresponds to the first magnetic block 41, the hydraulic oil can be discharged. The hydraulic oil splashed on the surface of the column 391 and the fixed rod 392 during the discharge process can be used to lubricate the fixed rod 392 and the internal guide groove 394 of the sleeve 393 to ensure the smoothness of the rotation of the first gear ring 395.

[0035] like Figure 4 and Figure 5 As shown, a leakage prevention component 43 is provided on the left side of the end cover 24, and the leakage prevention component 43 includes an internal thread groove 431 opened on the left side of the end cover 24, and an external thread ring 432 is fixedly connected to the right side of the cover body 31. The internal thread groove 431 is threadedly connected to the external thread ring 432, and the shape of the external thread ring 432 is adapted to the shape of the internal thread groove 431.

[0036] By adopting the above technical solution, first, after the fixed external thread ring 432 on the right side of the cover body 31 is connected with the internal thread groove 431 opened on the left side of the end cover 24, the cover body 31 can be rotated to complete the installation between the cover body 31 and the end cover 24; It should be noted that after the cover body 31 and the end cover 24 are fixed, the first tooth ring 395 arranged on the outside of the cover body 31 will always be directly below. After the cover body 31 and the end cover 24 are fixed, the cover body 31 will wrap the connection between the piston rod 22 and the end cover 24, so that when the hydraulic cylinder 2 leaks oil, the leaked hydraulic oil will be blocked by the cover body 31 to prevent the leaked hydraulic oil from polluting the external environment.

[0037] like Figure 3 As shown, a cleaning assembly 44 is provided on the left side of the cover body 31 , and the cleaning assembly 44 includes a cleaning ring 441 fixedly connected to the left side of the cover body 31 , a chamfer is provided on the left side of the outer end of the cleaning ring 441 , and the cleaning ring 441 is slidably connected to the outer side of the piston rod 22 .

[0038] By adopting the above technical solution, first, after the hydraulic cylinder 2 is started, when the piston rod 22 moves in a direction away from the hydraulic unit 1, the cleaning ring 441 fixed on the left side of the cover body 31 will scrape off the small amount of hydraulic oil remaining on the surface of the piston rod 22, and the scraped hydraulic oil is still inside the cover body 31. When the piston rod 22 moves in the opposite direction, the cleaning ring 441 has a chamfered direction to scrape off impurities attached to the surface of the piston rod 22. Since the piston rod 22 is always in contact with the cleaning ring 441 during the movement, impurities attached to the surface of the piston rod 22 can be prevented from causing wear to the piston rod 22 and the end cover 24 after contacting the hydraulic oil, thereby ensuring the service life of the piston rod 22 and the end cover 24.

[0039] Working principle: First, the cover body 31 can be connected with the internal thread groove 431 opened on the left side of the end cover 24 through the external thread ring 432, so that the installation between the two is completed. At the same time, the first gear ring 395 will always be directly below. When the connection between the piston rod 22 and the end cover 24 leaks due to the wear of the seal, the hydraulic oil will flow into the embedded groove 32 due to its own weight and be above the support plate 33. When the support plate 33 starts to sink, it will drive the limit cylinder 35 to move downward, and transmit contact with the first pressure sensor 36 through the limit rod, and then transmit information to the controller of the hydraulic unit 1, and then start the warning light 37 to warn. At this time, the support plate 33 squeezes the first pressure spring 34. When the hydraulic cylinder 2 is closed, the fixing ring 381 brings The dynamic column 391 gradually approaches the end cover 24, and at the same time drives the first movable ring 383 to slide on the outside of the cylinder body 21 through the connecting rod 382, ​​but does not contact the outside of the cylinder body 21, and the second movable ring 384 inside the movable ring will slide on the outside of the cylinder body 21 and always contact the outside of the cylinder body 21. If the outside of the cylinder body 21 expands, the second movable ring 384 cannot slide normally on the outside of the cylinder body 21, so that the second movable ring 384 starts to move inside the first movable ring 383 relative to the first movable ring 383, and the direction of movement of the second movable ring 384 is opposite to the moving direction of the first movable ring 383, causing the second movable ring 384 to squeeze the second pressure spring 386 in the corresponding direction. At the same time, the second movable ring 384 The fixed second striker 385 will also contact the second pressure sensor 387, and then the second pressure sensor 387 will transmit information to the controller in the hydraulic unit 1. After receiving the signal, the controller starts the warning light 37 to warn and drives the hydraulic cylinder 2 to stop running. If the column 391 fixed on the right side of the fixing ring 381 is inserted into the inside of the rotating drum under the cover body 31, the two fixing rods 392 on the outside of the column 391 will enter the guide groove 394 inside the sleeve 393 and drive the first gear ring 395 to rotate. Because the first gear ring 395 is engaged with the second gear ring 396 inside the cover body 31, the rotation of the first gear ring 395 can drive the second gear ring 396 to rotate, and then drive the scraper 397 in contact with the end cover 24 to rotate, and the scraper 39 7 can scrape off the hydraulic oil originally attached to the surface of the end cover 24. When the second magnetic block 42 at the right end of the column 391 is located at the opening below the delivery pipe 331, the first magnetic block 41 inside the delivery pipe 331 is lifted due to the repulsive force generated by the second magnetic block 42, so that the delivery pipe 331 loses the blockage from the first magnetic block 41. At this time, the hydraulic oil collected by the embedded groove 32 will be gradually discharged through the connection between the support plate 33 and the delivery pipe 331. After the column 391 drives the second magnetic block 42 to leave, the first magnetic block 41 will re-block the delivery pipe 331. When the piston rod 22 is pushed out of the cylinder body 21, the cleaning ring 441 fixed on the left side of the cover body 31 will scrape off the small amount of hydraulic oil remaining on the surface of the piston rod 22. When the piston rod 22 moves in the opposite direction,The cleaning ring 441 has a chamfered direction to scrape away impurities attached to the surface of the piston rod 22.

[0040] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic gate hoist that is easy to maintain, comprising a hydraulic unit (1) and a hydraulic cylinder (2) fixedly mounted on the lower side of the hydraulic unit (1), characterized in that: An oil leakage detection component (3) is provided on the left side of the hydraulic cylinder (2), and the oil leakage detection component (3) comprises a cover body (31) provided on the left side of the hydraulic cylinder (2); An embedding groove (32) is provided on the lower side of the cover body (31), a support plate (33) is slidably connected to the inside of the embedding groove (32), a delivery pipe (331) is fixedly connected to the lower side of the support plate (33), first pressure springs (34) are fixedly connected to the front and rear sides of the lower end of the support plate (33), the bottom end of the first pressure spring (34) is fixedly connected to the lower side of the embedding groove (32), a limiting cylinder (35) is fixedly connected to the front side of the lower end of the support plate (33), a first striker (351) is slidably connected to the inside of the limiting cylinder (35), and the first striker (351) passes through the lower side of the limiting cylinder (35), a first pressure sensor (36) is fixedly installed on the lower side of the embedding groove (32), and the bottom end of the first striker (351) moves downward to be pressed and contacted with the upper side of the first pressure sensor (36), and a warning light (37) is fixedly installed on the front side of the hydraulic unit (1).

2. The hydraulic gate hoist that is easy to maintain according to claim 1 is characterized in that: The hydraulic cylinder (2) comprises a cylinder body (21), a piston rod (22), a piston (23) and an end cover (24); the cylinder body (21) is sleeved on the outside of the piston rod (22); the right end of the piston rod (22) is fixedly connected to the left side of the piston (23); the piston (23) is slidably connected to the inside of the cylinder body (21); the end cover (24) is movably mounted on the left side of the cylinder body (21); the end cover (24) is sleeved on the outside of the piston rod (22); the oil leakage detector (24) is The detection component (3) is arranged on the left side of the end cover (24); the center of the support plate (33) and the delivery pipe (331) are both hollow structures; the hydraulic unit (1), the first pressure sensor (36) and the warning light (37) are all electrically connected; the outer side of the piston rod (22) and the outer side of the cylinder body (21) are jointly provided with an external cylinder detection component (38); the external cylinder detection component (38) comprises a fixing ring (381) fixedly connected to the left side of the outside of the piston rod (22).

3. The hydraulic gate hoist that is easy to maintain according to claim 2 is characterized in that: The front and rear parts of the right end of the fixed ring (381) are both fixedly connected to a connecting rod (382), the right end of the connecting rod (382) is fixedly connected to a first movable ring (383), the first movable ring (383) is slidably sleeved on the outside of the cylinder body (21), the interior of the first movable ring (383) is slidably connected to a second movable ring (384), and the second movable ring (384) is slidably connected to the outside of the cylinder body (21).

4. The hydraulic gate hoist that is easy to maintain according to claim 3 is characterized in that: The left and right sides of the second movable ring (384) are fixedly connected with second strikers (385), the interior of the first movable ring (383) and the left and right sides of the second movable ring (384) are fixedly connected with second pressure springs (386), the interior of the first movable ring (383) and the left and right sides of the second movable ring (384) are fixedly connected with second pressure sensors (387), the inside of the first movable ring (383) is fixedly installed with second pressure sensors (387), the end of the second striker (385) away from the second movable ring (384) moves and is pressed into contact with the side of the second pressure sensor (387) close to the second movable ring (384), and the second pressure sensor (387) is electrically connected to the hydraulic unit (1).

5. The hydraulic gate hoist that is easy to maintain according to claim 3 is characterized in that: A scraping assembly (39) is provided on the right side of the fixing ring (381) and the inside and outside of the cover body (31). The scraping assembly (39) comprises a column (391) fixedly connected to the lower part of the right end of the fixing ring (381).

6. The hydraulic gate hoist that is easy to maintain according to claim 5 is characterized in that: The front and rear parts of the outer side of the column (391) are fixedly connected to a fixing rod (392); the lower outer side of the cover body (31) is rotatably connected to a sleeve (393); a guide groove (394) is provided inside the sleeve (393); and the number of the guide grooves (394) is two. The two guide grooves (394) are staggered and threaded; the fixing rod (392) is slidably connected in the guide groove (394) after moving rightward; a first toothed ring (395) is fixedly connected to the outer side of the sleeve (393); a second toothed ring (396) is rotatably connected inside the cover body (31); the first toothed ring (395) and the second toothed ring (396) are meshed with each other; a scraper (397) is fixedly connected to the right side annular array of the second toothed ring (396); and the right side of the scraper (397) is in sliding contact with the left side of the end cover (24).

7. The hydraulic gate hoist that is easy to maintain according to claim 6 is characterized in that: The right end of the column (391) and the interior of the cover body (31) are both provided with an oil discharge component (4), and the oil discharge component comprises a first magnetic block (41) slidably connected to the interior of the delivery pipe (331).

8. The hydraulic gate hoist that is easy to maintain according to claim 7 is characterized in that: The right end of the upright post (391) is fixedly connected to a second magnetic block (42); when the second magnetic block (42) moves to the right, it magnetically repels the first magnetic block (41); when the first magnetic block (41) moves downward, it blocks the conveying pipe (331).

9. The hydraulic gate hoist that is easy to maintain according to claim 8 is characterized in that: An anti-leakage component (43) is provided on the left side of the end cover (24), the anti-leakage component (43) comprising an internal thread groove (431) opened on the left side of the end cover (24), an external thread ring (432) is fixedly connected to the right side of the cover body (31), the internal thread groove (431) is threadedly connected to the external thread ring (432), and the shape of the external thread ring (432) matches the shape of the internal thread groove (431).

10. The hydraulic gate hoist that is easy to maintain according to claim 9 is characterized in that: A cleaning assembly (44) is provided on the left side of the cover body (31), the cleaning assembly (44) comprising a cleaning ring (441) fixedly connected to the left side of the cover body (31), a chamfer being provided on the left side of the outer end of the cleaning ring (441), and the cleaning ring (441) is slidably connected to the outer side of the piston rod (22).

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