CN113898639A - Hydraulic oil cylinder leakage-proof device and hydraulic oil cylinder - Google Patents
Hydraulic oil cylinder leakage-proof device and hydraulic oil cylinder Download PDFInfo
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- CN113898639A CN113898639A CN202111265721.1A CN202111265721A CN113898639A CN 113898639 A CN113898639 A CN 113898639A CN 202111265721 A CN202111265721 A CN 202111265721A CN 113898639 A CN113898639 A CN 113898639A
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 62
- 230000000979 retarding effect Effects 0.000 claims abstract description 10
- 239000003921 oil Substances 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 25
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 10
- 241001330002 Bambuseae Species 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/26—Adaptations or arrangements of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to a hydraulic cylinder, in particular to a hydraulic cylinder leakage-proof device and a hydraulic cylinder, which comprise a chassis, a lifting assembly, a pressure relief prompting assembly, a retarding assembly and the like; the chassis top is equipped with the subassembly that rises, is equipped with pressure release suggestion subassembly on the subassembly that rises, and the subassembly that retards is located on the chassis. When the hydraulic system is locked, the piston block and the device on the piston block can be kept at a proper height under the self-locking action of the rotary screw rod, when hydraulic oil leaks, the piston rod and a heavy object on the piston rod can have a falling trend under the action of gravity, and a small torque is generated to prevent the piston rod from falling when a force acts on a combining surface of the impeller and the rotary screw rod, so that the normal working state of the hydraulic system can be kept even if liquid leakage occurs to the equipment, and the heavy object lifted on the piston rod can not fall off suddenly.
Description
Technical Field
The invention relates to a hydraulic oil cylinder, in particular to a leakage-proof device of the hydraulic oil cylinder and the hydraulic oil cylinder.
Background
The hydraulic oil cylinder uses hydraulic oil as a working medium, power is transmitted through the pressure inside the oil, the hydraulic oil cylinder is simple in structure and reliable in work, the hydraulic oil cylinder is widely applied to hydraulic systems of various machines, the hydraulic oil cylinder is mainly used for cargo transmission, an upper lifting point is not needed, the hydraulic oil cylinder has various forms, the action is stable when a heavy object is lifted, the operation is simple and reliable, and the transmission between floors is economical and easy.
After the pressure is given by a hydraulic system, the lower surface of a piston generates an upward force after being subjected to the pressure, after the piston rod lifts the heavy object to a fixed position, the hydraulic system is closed, the piston rod keeps still, so that the piston rod keeps upward thrust, when the weight is pushed upwards, the force of the hydraulic system acts on the bottom of the piston, the force bearing area is the bottom of the piston rod, the pressure acts on the weight through the piston rod, when the weight falls, a downward force is generated, meanwhile, as the hydraulic system may have liquid leakage, the piston rod also has a tendency of falling when liquid leakage occurs, so that the heavy object lifted by the piston rod may drop suddenly, the potential safety hazard is high, when the traditional hydraulic oil cylinder works, if the oil pressure is too high, the piston rod can quickly rise, because the weight of the heavy object lifted by the piston rod is very large, the danger of falling easily occurs when the piston rod is quickly lifted.
Therefore, the invention provides a hydraulic oil cylinder leakage-proof device and a hydraulic oil cylinder, which can keep the normal working state of a hydraulic system and prevent the hydraulic oil cylinder from rising too fast when leakage occurs, and is necessary to solve the problems that a lifted heavy object can drop suddenly when leakage occurs and the heavy object is easy to fall when the heavy object rises fast.
Disclosure of Invention
The invention aims to provide a hydraulic oil cylinder leakage-proof device and a hydraulic oil cylinder, which comprise a bottom frame, a lifting assembly and a pressure relief prompting assembly, wherein the lifting assembly is arranged above the bottom frame, the pressure relief prompting assembly is arranged on the lifting assembly, the lifting assembly comprises a connecting oil pipe, an electromagnetic valve, a sealing ring, an impeller, a plane bearing, a slotted limiting cylinder, a rotary lead screw, a piston block and a piston rod, the left side and the right side of the bottom frame are fixedly connected with the connecting oil pipe, the connecting oil pipe penetrates through the bottom frame, the electromagnetic valve is arranged in the connecting oil pipe, the sealing ring is fixedly connected with the top of the bottom frame, the sealing ring is communicated with the two connecting oil pipes, the plane bearing is arranged on the upper part of the sealing ring, the rotary lead screw is rotatably connected in the plane bearing, the rotary lead screw penetrates through the upper part of the sealing ring, the impeller is fixedly connected in the sealing ring, the slotted limiting cylinder is fixedly connected on the outer top of the sealing ring, and is rotatably connected with the rotary lead screw, the rotary screw penetrates through the slotted limiting cylinder, a piston block is connected to the rotary screw in a thread fit mode, a piston rod is connected to the inside of the slotted limiting cylinder in a sliding mode, and the piston rod is in contact with the piston block.
More preferably, pressure release suggestion subassembly is including relay switch, the slide valve board, first reset spring, the suggestion board, second reset spring and electro-magnet, it has relay switch to connect the intraductal bottom rigid coupling of oil, it has first reset spring to connect the intraductal bottom rigid coupling of oil, first reset spring keeps away from relay switch one end rigid coupling and has the slide valve board, the anterior slidingtype of chassis is connected with the suggestion board, be connected with a pair of second reset spring between suggestion board and the chassis, suggestion board right part rigid coupling has the electro-magnet.
More preferably, still including the slow subassembly, the slow subassembly is located on the chassis, the slow subassembly is including the bull stick, rectangle fluting case, the friction ring, fluting disc and stop component, the rotation type is connected with the rotary rod on the chassis, rotary rod and rotatory lead screw bottom rigid coupling, the inside rigid coupling of chassis has rectangle fluting case, the rotary rod passes rectangle fluting case, the bottom is the mode rigid coupling that the annular distributes in the rectangle fluting incasement has six friction rings, adjacent friction ring contact, rotary rod lower part rigid coupling has the fluting disc, stop component locates inside the fluting disc, stop component is used for making the piston rod and its upper installation stop to rise when fluting disc rotational speed is too fast.
More preferably, the stopping member includes six sliding clamping rods and a first return spring, the six sliding clamping rods are slidably connected to the inside of the slotted disc in an annular distribution manner, and a pair of first return springs is connected between the sliding clamping rods and the slotted disc.
More preferably, the control device further comprises a control assembly, the control assembly is arranged inside the rectangular slotting box and comprises an L-shaped slotting frame, a rotating gear, a T-shaped rack, a sliding rack, a second homing spring, a third homing spring and an execution switch, the L-shaped slotting frame is fixedly connected to the left side of the inner wall of the rectangular slotting box, the rotating gear is fixedly connected to the rotating rod, the T-shaped rack is slidably connected to the L-shaped slotting frame and meshed with the rotating gear, the sliding rack is symmetrically and slidably connected to the T-shaped rack, a pair of second homing springs is connected between the sliding rack and the T-shaped rack, a pair of third homing springs is connected between the T-shaped rack and the L-shaped slotting frame, and the execution switch is symmetrically and fixedly connected to the L-shaped slotting frame.
More preferably, still including spacing subassembly, spacing subassembly is located on the spacing section of thick bamboo of fluting, spacing subassembly is including ARC support frame, electric putter, N type promotes the frame, first return spring, wedge kelly and second return spring, spacing section of thick bamboo upper portion rigid coupling of fluting has a pair of ARC support frame, be equipped with a pair of electric putter on the ARC support frame, spacing section of thick bamboo upper portion slidingtype of fluting is connected with a pair of N type and promotes the frame, two N types promote the frame respectively with two electric putter rigid couplings of homonymy, be connected with first return spring between N type promotes the frame and the spacing section of thick bamboo of fluting, upper portion symmetry slidingtype is connected with two pairs of wedge kellies in the spacing section of thick bamboo of fluting, adjacent wedge kellies and N type promote the frame contact, wedge kelly card is gone into in the draw-in groove of piston rod top, be connected with second return spring between two wedge kellies of homonymy.
More preferably, the inclined plane is arranged on one side, away from each other, of the wedge-shaped clamping rods, and the wedge-shaped clamping rods are used for clamping the piston rod when the hydraulic system is locked, so that the effect of preventing the piston rod and a heavy object on the piston rod from falling is achieved.
More preferably, still including adjusting part, adjusting part locates on the chassis, adjusting part is including N type fluting frame, adjust the lead screw, the adjusting collar, rotate spacing, slip packing ring and extrusion spring, chassis top rigid coupling has a pair of N type fluting frame, N type fluting frame upper portion rotary type is connected with the adjusting screw, be connected with the adjusting collar through screw-thread fit's mode on the adjusting screw, two adjusting collar dislocation set, spacing section of thick bamboo lower part rotary type of fluting is connected with and rotates spacing, rotate spacing and piston block slidingtype cooperation, rotate spacing and the spacing cooperation of adjusting collar, the inside ring channel that opens of piston block, the sliding type is connected with the slip packing ring on the ring channel, slip packing ring and piston rod contact, be connected with three extrusion springs between slip packing ring and the piston block.
More preferably, the sliding washer is made of rubber, and the sliding washer is in contact with the piston rod and is used for preventing the piston rod and a heavy object on the piston rod from being directly pressed on the piston block, so that the service life of the piston block is prolonged.
More preferably, the hydraulic pressure boosting device further comprises a boosting assembly, the boosting assembly is arranged on the slotting limiting cylinder, the boosting assembly comprises a hydraulic thin tube, a hydraulic connecting tube, a hydraulic thick tube and a piston push plate, the hydraulic thin tube is fixedly connected to the top of the slotting limiting cylinder and is in sliding fit with the piston rod, the hydraulic connecting tube is connected to the upper portion of the hydraulic thin tube in a communicated mode, the hydraulic thick tube is connected to the lower portion of the hydraulic connecting tube in a communicated mode, the hydraulic thick tube is fixedly connected with the top of the underframe, and the piston push plate is connected to the inner portion of the hydraulic thick tube in a sliding mode.
The invention has the following beneficial effects:
1. when the hydraulic system is locked, the piston block and the device on the piston block can be kept at a proper height under the self-locking action of the rotary screw rod, when hydraulic oil leaks, the piston rod and a heavy object on the piston rod can have a falling trend under the action of gravity, and a small torque is generated to prevent the piston rod from falling when a force acts on a combining surface of the impeller and the rotary screw rod, so that the normal working state of the hydraulic system can be kept even if liquid leakage occurs to the equipment, and the heavy object lifted on the piston rod can not fall off suddenly.
2. When the piston rod and the device on the piston rod are kept at the proper height, the wedge-shaped clamping rod can be clamped in the clamping groove on the piston rod, so that the piston rod and a heavy object on the piston rod are prevented from falling, the piston rod and the device on the piston rod cannot fall when a hydraulic system leaks, and the safety is improved.
3. Through the cooperation of the prompt board and the device thereon, when the equipment normally operates, the prompt board can display qualified information, and when liquid leakage occurs, the prompt board can display pressure relief information to warn the working personnel that hydraulic oil leaks in the equipment, so that the working personnel can perform corresponding processing in time.
4. Through the cooperation of the friction ring and the device on the friction ring, the friction force between the friction ring and the slotted disc is large, the slotted disc and the device on the slotted disc can be prevented from rotating at an excessively high speed, and when the slotted disc and the device on the slotted disc rotate at an excessively high speed, the sliding clamping rod can be clamped on the clamping groove in the friction ring, so that the slotted disc and the device on the slotted disc stop rotating, the piston rod is fully and effectively ensured to stably and slowly lift heavy objects, and the work is ensured to be safely carried out.
5. The angle of the piston block can be adjusted, so that the stress position of the piston block can be changed, the local abrasion of the piston block is avoided from being serious, the sliding gasket can reciprocate up and down in the annular groove in the lifting process of the device, the piston block can be further protected, and the service life of the device is prolonged.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of a second embodiment of the present invention.
Fig. 3 is a schematic perspective view of a portion of the ascending assembly according to the present invention.
Fig. 4 is a schematic view of a partial cross-sectional perspective structure of the pressure relief prompting assembly of the invention.
Fig. 5 is a schematic view of a first partially cut-away perspective structure of the riser assembly of the present invention.
Fig. 6 is a second partially cut-away perspective view of the riser assembly of the present invention.
Fig. 7 is a schematic sectional perspective view of the underframe according to the invention.
Fig. 8 is an enlarged perspective view of the present invention B.
FIG. 9 is a schematic view of a first partially cut-away perspective view of a retarder assembly according to the invention.
FIG. 10 is a schematic view of a second partially cut-away perspective view of a retarder assembly according to the invention.
Fig. 11 is a schematic perspective view of a control assembly according to the present invention.
Fig. 12 is an enlarged perspective view of the present invention a.
Fig. 13 is a schematic perspective view of a portion of an adjustment assembly of the present invention.
Fig. 14 is a partially sectional and disassembled perspective structure of the present invention.
FIG. 15 is a perspective view of the force increasing assembly of the present invention.
Wherein the figures include the following reference numerals: 1_ chassis, 2_ lifting assembly, 21_ connecting oil pipe, 22_ solenoid valve, 23_ seal ring, 24_ impeller, 25_ flat bearing, 26_ slotted limiting cylinder, 27_ rotary lead screw, 28_ piston block, 29_ piston rod, 3_ pressure relief prompting assembly, 31_ relay switch, 32_ slide valve plate, 33_ first return spring, 34_ prompting plate, 35_ second return spring, 36_ electromagnet, 4_ retarding assembly, 41_ rotary rod, 42_ rectangular slotted box, 43_ friction ring, 44_ slotted disc, 45_ slide clamping rod, 46_ first homing spring, 5_ control assembly, 51_ L slotted rack, 52_ rotary gear, 53_ T rack, 54_ slide rack, 55_ second homing spring, 56_ third homing spring, 57_ execution switch, 6_ limiting assembly, 61_ arc support frame, 62_ electric push rod, 63_ N type pushing frame, 64_ first return spring, 65_ wedge-shaped clamping rod, 66_ second return spring, 7_ adjusting assembly, 71_ N type slotted frame, 72_ adjusting screw rod, 73_ adjusting sleeve, 74_ rotation limiting frame, 75_ annular groove, 76_ sliding gasket, 77_ extrusion spring, 8_ force increasing assembly, 81_ hydraulic thin tube, 82_ hydraulic connecting tube, 83_ hydraulic thick tube and 84_ piston push plate.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A hydraulic oil cylinder leakage-proof device and a hydraulic oil cylinder are shown in figures 1, 2, 3, 4, 5, 6, 7 and 8 and comprise an underframe 1, a lifting assembly 2 and a pressure relief prompting assembly 3, wherein the lifting assembly 2 is arranged above the underframe 1, the lifting assembly 2 is used for lifting a heavy object, the lifting assembly 2 is provided with the pressure relief prompting assembly 3, and the pressure relief prompting assembly 3 is used for prompting a worker when hydraulic oil leakage occurs.
The ascending assembly 2 comprises a connecting oil pipe 21, an electromagnetic valve 22, a sealing ring 23, an impeller 24, a plane bearing 25, a slotted limiting cylinder 26, a rotary lead screw 27, a piston block 28 and a piston rod 29, wherein the left side and the right side of the chassis 1 are fixedly connected with the connecting oil pipe 21, the connecting oil pipe 21 is used for conveying hydraulic oil, the connecting oil pipe 21 penetrates through the chassis 1, the electromagnetic valve 22 is arranged inside the connecting oil pipe 21, the electromagnetic valve 22 is used for controlling the circulation of the hydraulic oil in the connecting oil pipe 21, the top of the chassis 1 is connected with the sealing ring 23 in a welding mode, the sealing ring 23 is communicated with the two connecting oil pipes 21, the plane bearing 25 is arranged on the upper portion of the sealing ring 23, the rotary lead screw 27 is rotatably connected inside the plane bearing 25, the rotary lead screw 27 penetrates through the upper portion of the sealing ring 23, the impeller 24 is fixedly connected to the lower portion of the rotary lead screw 27, the hydraulic oil can push the impeller 24 to rotate, the impeller 24 is positioned inside the sealing ring 23, the slotted limiting cylinder 26 is fixedly connected to the outer top of the sealing ring 23, the slotted limiting cylinder 26 is rotatably connected with the rotary lead screw 27, the rotary lead screw 27 penetrates through the slotted limiting cylinder 26, the rotary lead screw 27 is connected with the piston block 28 in a threaded fit mode, the piston block 28 and the upper device of the piston block can lift under the fit of the rotary lead screw 27 and the piston block 28, the piston rod 29 is slidably connected inside the slotted limiting cylinder 26, the piston rod 29 is used for lifting a heavy object, and the piston rod 29 is in contact with the piston block 28.
Pressure release suggestion subassembly 3 is including relay switch 31, slide valve plate 32, first reset spring 33, prompt board 34, second reset spring 35 and electro-magnet 36, the bottom rigid coupling has relay switch 31 in connecting oil pipe 21, the bottom rigid coupling has first reset spring 33 in connecting oil pipe 21, first reset spring 33 is kept away from relay switch 31 one end and is connected with slide valve plate 32 through the welded mode, 1 anterior slidingtype of chassis is connected with prompt board 34, prompt board 34 is used for indicateing staff this equipment hydraulic oil leakage (shown in figure 8), be connected with a pair of second reset spring 35 between prompt board 34 and the chassis 1, prompt board 34 right part rigid coupling has electro-magnet 36, relay switch 31 is used for controlling the electro-magnet 36 circular telegram or outage.
The two connecting oil pipes 21 are communicated with the oil storage bin, when a heavy object above the piston rod 29 needs to be lifted by the thrust of hydraulic oil, a worker manually controls the electromagnetic valve 22 to be opened, under the operation of the external oil pump, the hydraulic oil in the oil storage bin can enter the sealing ring 23 through the connecting oil pipe 21 on the right side and then be discharged through the connecting oil pipe 21 on the left side, meanwhile, under the pushing action of the hydraulic oil, the impeller 24 and the device thereon rotate, the piston block 28 and the device thereon ascend through the cooperation of the rotary lead screw 27 and the piston block 28, the piston block 28 pushes the piston rod 29 to ascend together and lift the heavy object, when the weight above the piston rod 29 is lifted to a proper height, the worker manually controls the electromagnetic valve 22 to be closed, the pressure of the hydraulic oil in the sealing ring 23 is kept unchanged, so that the hydraulic system is locked, the piston block 28 and the devices thereon will be kept at the proper height under the self-locking action of the rotary screw 27.
Under normal conditions, when the device works, the connecting oil pipe 21 and the sealing ring 23 are filled with hydraulic oil, the hydraulic oil can push the sliding valve plate 32 to move downwards under the action of pressure, the first return spring 33 can be compressed along with the pressure, the sliding valve plate 32 can press the relay switch 31, the relay switch 31 can control the electromagnet 36 to be electrified, the electromagnet 36 is magnetic after being electrified and is attracted to the right part of the chute on the front side of the chassis 1, the electromagnet 36 and the device on the electromagnet can move rightwards, the second return spring 35 can be compressed along with the pressure, and therefore the indication on the indication plate 34 is qualified, and no hydraulic oil leakage exists in the device. When hydraulic oil leakage occurs in the equipment, the pressure of the hydraulic oil in the equipment is reduced, the first return spring 33 is reset along with the pressure, the sliding valve plate 32 is driven to move upwards, the relay switch 31 is not pressed by the sliding valve plate 32 any more, the electromagnet 36 is powered off, the second return spring 35 is reset along with the pressure, the prompt plate 34 and the device on the prompt plate 34 are driven to reset, pressure relief is displayed on the prompt plate 34 at the moment, a worker is warned that hydraulic oil leakage occurs in the equipment, and the worker can conveniently perform corresponding treatment in time.
When hydraulic oil leaks, the piston rod 29 and the weight on the piston rod have a tendency of falling under the action of gravity, and at the moment, the force acts on the joint surface of the impeller 24 and the rotating screw 27 to generate small torque to prevent the piston rod 29 from falling, so that the normal working state of the hydraulic system can be maintained even if the hydraulic oil leaks, and the weight lifted on the piston rod 29 cannot drop suddenly.
When the piston rod 29 needs to be lowered, a worker manually controls the external oil pump to enable hydraulic oil to enter the sealing ring 23 through the connecting oil pipe 21 on the left side and then to be discharged back into the oil storage bin through the connecting oil pipe 21 on the right side, the hydraulic oil can drive the impeller 24 and the upper device to rotate reversely under the action of thrust, and the piston block 28 and the upper device can be lowered to the initial position through the matching of the rotary lead screw 27 and the piston block 28.
Example 2
On the basis of embodiment 1, as shown in fig. 9 and 10, the present invention further includes a retarding assembly 4, the retarding assembly 4 is disposed on the bottom frame 1, the retarding assembly 4 is used for retarding the ascending of the piston rod 29 and the device thereon, the retarding assembly 4 includes a rotating rod 41, a rectangular slotted box 42, a friction ring 43, a slotted disc 44, a sliding clamping rod 45 and a first return spring 46, the bottom frame 1 is rotatably connected with the rotating rod 41, the rotating rod 41 is fixedly connected with the bottom end of the rotating lead screw 27, the bottom frame 1 is connected with the rectangular slotted box 42 through a bolt, the rotating rod 41 passes through the rectangular slotted box 42, the bottom inside of the rectangular slotted box 42 is connected with six friction rings 43 in a circular distribution manner by welding, the adjacent friction rings 43 are in contact, the slotted disc 44 is fixedly connected to the lower portion of the rotating rod 41, the six sliding clamping rods 45 in a circular distribution manner inside the slotted disc 44 are slidably connected (refer to fig. 10), the sliding clamping rod 45 is used for being clamped on a clamping groove in the friction ring 43, and a pair of first return springs 46 is connected between the sliding clamping rod 45 and the slotted disc 44.
During the rotation of the rotary screw 27 and the device thereon, the rotary rod 41 and the device thereon will also rotate, because the surface of the friction ring 43 is rough and the friction force between the friction ring 43 and the slotted disc 44 is large, so that during the rotation of the slotted disc 44 and the device thereon, the speed will not be too high, and the piston block 28 and the device thereon will slowly rise, and further the piston rod 29 will slowly lift the heavy object to a proper height, when the speed of the rotation of the slotted disc 44 and the device thereon is too high, the friction force of the friction ring 43 will not be enough to block the slotted disc 44, and at the same time, under the action of centrifugal force, the sliding clamping rod 45 will be thrown out and clamped on the clamping groove in the friction ring 43, and the first return spring 46 will be compressed, so that the slotted disc 44 and the device thereon will stop rotating, and the piston rod 29 and the device thereon will not rise too fast, the safety is improved.
Example 3
On the basis of embodiment 2, as shown in fig. 11 and 12, the control assembly 5 is further included, the control assembly 5 is disposed inside the rectangular slotted box 42, the control assembly 5 includes an L-shaped slotted frame 51, a rotating gear 52, a T-shaped rack frame 53, a sliding rack 54, a second return spring 55, a third return spring 56 and an execution switch 57, the L-shaped slotted frame 51 is connected to the left side of the inner wall of the rectangular slotted box 42 by means of a rivet, the rotating gear 52 is fixedly connected to the rotating rod 41, the T-shaped rack frame 53 is slidably connected to the L-shaped slotted frame 51, the T-shaped rack frame 53 is engaged with the rotating gear 52, the sliding rack 54 is symmetrically connected to the T-shaped rack frame 53, a pair of second return springs 55 is connected between the sliding rack 54 and the T-shaped rack frame 53, the rotating gear 52 is not separated from the T-shaped rack frame 53 by the cooperation of the sliding rack frame 54 and the second return springs 55, a pair of third return springs 56 are connected between the T-shaped rack 53 and the L-shaped slotted frame 51, and the L-shaped slotted frame 51 is symmetrically and fixedly connected with an execution switch 57.
The limiting device further comprises a limiting component 6, the limiting component 6 is arranged on the slotted limiting cylinder 26, the limiting component 6 is used for clamping the piston rod 29 when a hydraulic system is locked and preventing the piston rod 29 and a heavy object thereon from falling, the limiting component 6 comprises an arc-shaped supporting frame 61, an electric push rod 62, an N-shaped pushing frame 63, a first return spring 64, a wedge-shaped clamping rod 65 and a second return spring 66, the upper part of the slotted limiting cylinder 26 is connected with a pair of arc-shaped supporting frames 61 in a welding mode, the arc-shaped supporting frame 61 is provided with a pair of electric push rods 62, the execution switch 57 is used for controlling the electric push rods 62 to stretch and retract, the upper part of the slotted limiting cylinder 26 is connected with a pair of N-shaped pushing frames 63 in a sliding mode, the two N-shaped pushing frames 63 are respectively fixedly connected with the two electric push rods 62 on the same side, the first return spring 64 is connected between the N-shaped pushing frame 63 and the slotted limiting cylinder 26, and two pairs of wedge-shaped clamping rods 65 are symmetrically connected on the upper part in the slotted limiting cylinder 26 in a sliding mode, the inclined plane (refer to fig. 12) is arranged on one side, far away from each other, of the same pair of wedge-shaped clamping rods 65, the wedge-shaped clamping rods 65 are used for clamping the piston rod 29, the adjacent wedge-shaped clamping rods 65 are in contact with the N-type pushing frame 63, the wedge-shaped clamping rods 65 are clamped into the uppermost clamping grooves of the piston rod 29, and a second return spring 66 is connected between the two wedge-shaped clamping rods 65 on the same side.
In the process that the piston rod 29 and the device thereon ascend, the rotating gear 52 drives the T-shaped rack 53 and the device thereon to move, one of the third return springs 56 is stretched, the other third return spring 56 is compressed, the T-shaped rack 53 presses one of the actuating switches 57 and controls the electric push rod 62 to extend, the electric push rod 62 drives the N-shaped push frame 63 to move in the direction of approaching each other, the N-shaped push frame 63 presses the wedge-shaped clamping rod 65 on the same side to move in the direction of approaching each other, so that the wedge-shaped clamping rod 65 no longer clamps the piston rod 29, the piston rod 29 and the device thereon are convenient to ascend better, when the hydraulic system is locked, the piston rod 29 and the device thereon are kept in the state after ascending, the third return spring 56 is reset along with the piston rod 56 and drives the T-shaped rack 53 and the device thereon to reset, the T-shaped rack 53 is separated from one of the actuating switches 57, the electric push rod 62 is controlled to contract, the N-shaped push frame 63 and the device on the N-shaped push frame are reset, the wedge-shaped clamping rod 65 is clamped in the clamping groove in the piston rod 29, and the piston rod 29 and a heavy object on the piston rod are prevented from falling. When the rotary gear 52 and the device thereon rotate reversely, the piston rod 29 and the device thereon need to descend, the rotary gear 52 drives the T-shaped rack 53 and the device thereon to move reversely, the T-shaped rack 53 presses another execution switch 57, which controls the electric push rod 62 to extend, so that the wedge-shaped clamping rod 65 no longer clamps the piston rod 29, and the piston rod 29 and the device thereon can descend smoothly.
Example 4
On the basis of embodiment 3, as shown in fig. 13 and 14, the adjusting device 7 is further included, the adjusting device 7 is disposed on the chassis 1, the adjusting device 7 is used for adjusting the angle of the piston block 28 to prolong the service life of the piston block, the adjusting device 7 includes an N-shaped slotted frame 71, an adjusting lead screw 72, an adjusting sleeve 73, a rotation limiting frame 74, a sliding washer 76 and an extrusion spring 77, the top of the chassis 1 is connected with a pair of N-shaped slotted frames 71 by welding, the upper portion of the N-shaped slotted frame 71 is rotatably connected with the adjusting lead screw 72, the adjusting lead screw 72 is connected with the adjusting sleeve 73 by screw thread fit, the adjusting sleeve 73 and the upper device thereof can move along the adjusting lead screw 72 by the fit of the adjusting lead screw 72 and the adjusting sleeve 73, the two adjusting sleeves 73 are arranged in a staggered manner, the lower portion of the slotted limiting cylinder 26 is rotatably connected with the rotation limiting frame 74, the rotation limiting frame 74 is slidably fitted with the piston block 28, the rotation limiting frame 74 is in limiting fit with the adjusting sleeve 73, an annular groove 75 (as shown in fig. 14) is formed in the piston block 28, a sliding gasket 76 is connected to the annular groove 75 in a sliding manner, the sliding gasket 76 is made of rubber, the sliding gasket 76 is in contact with the piston rod 29, since the piston rod 29 and a heavy object thereon are prevented from being directly pressed on the piston block 28, the sliding gasket 76 is in contact with the piston rod 29, and three extrusion springs 77 are connected between the sliding gasket 76 and the piston block 28.
After the device is used for a period of time, a worker manually rotates the adjusting screw 72, the adjusting sleeve 73 and the device on the adjusting sleeve 73 move along the adjusting screw 72 through the matching of the adjusting screw 72 and the adjusting sleeve 73, under the common matching of the two adjusting sleeves 73, the rotation limiting frame 74 rotates and drives the piston block 28 and the device on the piston block to rotate, so that the angle of the piston block 28 is adjusted, the stress position of the piston block 28 can be changed, the local abrasion of the piston block 28 is prevented from being serious, in the process of up-and-down reciprocating motion of the piston block 28 and the device on the piston block, the sliding washer 76 can reciprocate up and down in the annular groove 75 through the matching of the sliding washer 76 and the extrusion spring 77, the piston rod 29 and the heavy object on the piston block 28 can be prevented from directly pressing on the piston block 28, the piston block 28 can be further protected, and the service life of the piston block is prolonged.
Example 5
On the basis of embodiment 4, as shown in fig. 15, the hydraulic lifting device further includes a force increasing assembly 8, the force increasing assembly 8 is disposed on the slotted limiting cylinder 26, the force increasing assembly 8 is used for increasing the force for lifting a heavy object, the force increasing assembly 8 includes a hydraulic thin tube 81, a hydraulic connecting tube 82, a hydraulic thick tube 83 and a piston push plate 84, the top of the slotted limiting cylinder 26 is connected with the hydraulic thin tube 81 through welding, the hydraulic thin tube 81 is slidably fitted with the piston rod 29, the hydraulic connecting tube 82 is connected to the upper portion of the hydraulic thin tube 81, the hydraulic thick tube 83 is connected to the lower portion of the hydraulic connecting tube 82, the hydraulic thick tube 83 is fixedly connected to the top of the chassis 1, the piston push plate 84 is connected to the inside of the hydraulic thick tube 83 in a sliding manner, and a large pushing force is applied to the piston push plate 84 through hydraulic oil, so that the heavy object can be better lifted.
Hydraulic oil is filled in the hydraulic thin tube 81, the hydraulic connecting tube 82 and the hydraulic thick tube 83, when lifting a heavy object, the heavy object is placed at the top of the piston push plate 84, when the piston rod 29 and the upper device thereof rise, the hydraulic oil in the hydraulic thin tube 81 can be extruded, and larger thrust is applied to the piston push plate 84 through the hydraulic oil, so that the heavy object can be lifted better.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A leakage-proof device of a hydraulic oil cylinder and the hydraulic oil cylinder comprise a bottom frame (1), a lifting assembly (2) and a pressure relief prompt assembly (3), wherein the lifting assembly (2) is arranged above the bottom frame (1), the pressure relief prompt assembly (3) is arranged on the lifting assembly (2), and the leakage-proof device is characterized in that the lifting assembly (2) comprises a connecting oil pipe (21), an electromagnetic valve (22), a sealing ring (23), an impeller (24), a plane bearing (25), a slotted limiting cylinder (26), a rotary lead screw (27), a piston block (28) and a piston rod (29), the left side and the right side of the bottom frame (1) are fixedly connected with the connecting oil pipe (21), the connecting oil pipe (21) penetrates through the bottom frame (1), the electromagnetic valve (22) is arranged inside the connecting oil pipe (21), the sealing ring (23) is fixedly connected to the top of the bottom frame (1), the sealing ring (23) is communicated with the two connecting oil pipes (21), the plane bearing (25) is arranged on the upper part of the sealing ring (23), plane bearing (25) inside rotary type is connected with rotatory lead screw (27), rotatory lead screw (27) pass sealing ring (23) upper portion, rotatory lead screw (27) lower part rigid coupling has impeller (24), impeller (24) are located sealing ring (23) inside, sealing ring (23) outer top rigid coupling has spacing section of thick bamboo of fluting (26), spacing section of thick bamboo of fluting (26) is connected with rotatory lead screw (27) rotary type, rotatory lead screw (27) pass spacing section of thick bamboo of fluting (26), be connected with piston block (28) through screw-thread fit's mode on rotatory lead screw (27), spacing section of thick bamboo of fluting (26) inside slidingtype is connected with piston rod (29), piston rod (29) and piston block (28) contact.
2. An anti-leakage device of a hydraulic oil cylinder and the hydraulic oil cylinder according to claim 1, characterized in that the pressure relief prompt component (3) comprises a relay switch (31), a sliding valve plate (32), a first return spring (33), a prompt plate (34), a second return spring (35) and an electromagnet (36), the relay switch (31) is fixedly connected to the bottom of the oil connecting pipe (21), the first return spring (33) is fixedly connected to the bottom of the oil connecting pipe (21), the sliding valve plate (32) is fixedly connected to one end of the first return spring (33) far away from the relay switch (31), the prompt plate (34) is slidably connected to the front portion of the chassis (1), a pair of the second return springs (35) is connected between the prompt plate (34) and the chassis (1), and the electromagnet (36) is fixedly connected to the right portion of the prompt plate (34).
3. An anti-leakage device of a hydraulic oil cylinder and the hydraulic oil cylinder according to claim 2, characterized by further comprising a retarding assembly (4), wherein the retarding assembly (4) is arranged on the base frame (1), the retarding assembly (4) comprises a rotating rod (41), a rectangular slotted case (42), friction rings (43), a slotted disc (44) and a stopping component, the rotating rod (41) is rotatably connected on the base frame (1), the rotating rod (41) is fixedly connected with the bottom end of a rotating lead screw (27), the rectangular slotted case (42) is fixedly connected in the base frame (1), the rotating rod (41) penetrates through the rectangular slotted case (42), six friction rings (43) are fixedly connected in the rectangular slotted case (42) in an annular distribution manner, adjacent friction rings (43) are in contact, the slotted disc (44) is fixedly connected at the lower part of the rotating rod (41), the stopping component is arranged in the slotted disc (44), the stopping component is used for stopping the piston rod (29) and the device on the piston rod from rising when the slotted disc (44) rotates too fast.
4. A leak-proof device for a hydraulic cylinder and a hydraulic cylinder as claimed in claim 2, wherein the stopping means comprises a slide rod (45) and a first return spring (46), six slide rods (45) are slidably connected to the inside of the slotted disc (44) in an annularly distributed manner, and a pair of first return springs (46) are connected between the slide rods (45) and the slotted disc (44).
5. A hydraulic oil cylinder leakage preventing device and a hydraulic oil cylinder according to claim 2, characterized in that the hydraulic oil cylinder leakage preventing device further comprises a control assembly (5), the control assembly (5) is arranged inside the rectangular slotted case (42), the control assembly (5) comprises an L-shaped slotted frame (51), a rotating gear (52), a T-shaped rack frame (53), a sliding gear block (54), a second homing spring (55), a third homing spring (56) and an execution switch (57), the L-shaped slotted frame (51) is fixedly connected to the left side of the inner wall of the rectangular slotted case (42), the rotating gear (52) is fixedly connected to the rotating rod (41), the T-shaped slotted frame (53) is slidably connected to the L-shaped slotted frame (51), the T-shaped rack frame (53) is engaged with the rotating gear (52), the sliding gear block (54) is symmetrically and slidably connected to the T-shaped rack frame (53), a pair of second homing springs (55) is connected between the sliding gear block (54) and the T-shaped rack frame (53), a pair of third return springs (56) is connected between the T-shaped rack (53) and the L-shaped slotting frame (51), and the L-shaped slotting frame (51) is symmetrically and fixedly connected with an execution switch (57).
6. An anti-leakage device of a hydraulic oil cylinder and the hydraulic oil cylinder according to claim 5, which is characterized by further comprising a limiting component (6), wherein the limiting component (6) is arranged on the slotted limiting cylinder (26), the limiting component (6) comprises an arc-shaped supporting frame (61), an electric push rod (62), an N-shaped pushing frame (63), a first return spring (64), a wedge-shaped clamping rod (65) and a second return spring (66), a pair of arc-shaped supporting frames (61) is fixedly connected to the upper part of the slotted limiting cylinder (26), a pair of electric push rods (62) is arranged on the arc-shaped supporting frames (61), a pair of N-shaped pushing frames (63) is slidably connected to the upper part of the slotted limiting cylinder (26), the two N-shaped pushing frames (63) are respectively fixedly connected with the two electric push rods (62) on the same side, the first return spring (64) is connected between the N-shaped pushing frames (63) and the slotted limiting cylinder (26), two pairs of wedge-shaped clamping rods (65) are symmetrically and slidably connected to the inner upper portion of the slotted limiting cylinder (26), adjacent wedge-shaped clamping rods (65) are in contact with the N-shaped pushing frame (63), the wedge-shaped clamping rods (65) are clamped into clamping grooves in the uppermost portion of the piston rod (29), and a second return spring (66) is connected between the two wedge-shaped clamping rods (65) on the same side.
7. A leakage preventing device for a hydraulic cylinder as claimed in claim 6, wherein a pair of wedge-shaped locking bars (65) are provided with an inclined surface at the side away from each other, the wedge-shaped locking bars (65) being used for locking the piston rod (29) when the hydraulic system is locked, thereby preventing the piston rod (29) and the heavy object thereon from falling.
8. A hydraulic oil cylinder leakage-proof device and a hydraulic oil cylinder according to claim 6, characterized by further comprising an adjusting component (7), wherein the adjusting component (7) is arranged on the base frame (1), the adjusting component (7) comprises an N-shaped slotted frame (71), an adjusting lead screw (72), an adjusting sleeve (73), a rotation limiting frame (74), a sliding washer (76) and an extrusion spring (77), the top of the base frame (1) is fixedly connected with a pair of N-shaped slotted frames (71), the upper part of the N-shaped slotted frame (71) is rotatably connected with the adjusting lead screw (72), the adjusting lead screw (72) is connected with the adjusting sleeve (73) in a thread fit manner, the two adjusting sleeves (73) are arranged in a staggered manner, the lower part of the slotted limiting cylinder (26) is rotatably connected with the rotation limiting frame (74), the rotation limiting frame (74) is in sliding fit with the piston block (28), the rotation limiting frame (74) is in limiting fit with the adjusting sleeve (73), an annular groove (75) is formed in the piston block (28), a sliding gasket (76) is connected to the annular groove (75) in a sliding mode, the sliding gasket (76) is in contact with the piston rod (29), and three extrusion springs (77) are connected between the sliding gasket (76) and the piston block (28).
9. A leak preventer and hydraulic cylinder according to claim 8, characterized in that the sliding washer (76) is made of rubber, and the sliding washer (76) is in contact with the piston rod (29) for preventing the piston rod (29) and the weight thereon from being directly pressed against the piston block (28) and extending the life of the piston block (28).
10. An anti-leakage device of a hydraulic oil cylinder and the hydraulic oil cylinder according to claim 8, characterized by further comprising a force increasing component (8), wherein the force increasing component (8) is arranged on the slotted limiting cylinder (26), the force increasing component (8) comprises a hydraulic thin tube (81), a hydraulic connecting tube (82), a hydraulic thick tube (83) and a piston push plate (84), the hydraulic thin tube (81) is fixedly connected to the top of the slotted limiting cylinder (26), the hydraulic thin tube (81) is in sliding fit with the piston rod (29), the hydraulic connecting tube (82) is communicated with the upper part of the hydraulic thin tube (81), the hydraulic thick tube (83) is communicated with the lower part of the hydraulic connecting tube (82), the hydraulic thick tube (83) is fixedly connected to the top of the chassis (1), and the piston push plate (84) is connected to the inner part of the hydraulic thick tube (83) in a sliding manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111265721.1A CN113898639A (en) | 2021-10-28 | 2021-10-28 | Hydraulic oil cylinder leakage-proof device and hydraulic oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111265721.1A CN113898639A (en) | 2021-10-28 | 2021-10-28 | Hydraulic oil cylinder leakage-proof device and hydraulic oil cylinder |
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| CN113898639A true CN113898639A (en) | 2022-01-07 |
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