High-pressure rapid long-stroke hydraulic machine and control method thereof

Abstract

The application discloses a high-pressure rapid long-stroke hydraulic machine and a control method thereof, and relates to the technical field of hydraulic machines, which comprises a base, a pressure-bearing seat fixedly connected to the top of the base, four vertical rods fixedly connected to the top of the pressure-bearing seat in a symmetrical manner, a top plate fixedly connected to the top of the four vertical rods, and a sliding plate slidably connected to the outside of the four vertical rods. The application is characterized in that a circulating pipe is arranged between the main cylinder and the primary rod, which can transport the stored oil between the primary rod and the main cylinder and between the secondary rod and the primary rod to the main cylinder when oil is supplied, thereby increasing the ejection pressure of the primary rod and the secondary rod and improving the extension speed of the hydraulic cylinder. The hole diameter of oil supply can be changed by means of a hole changing assembly arranged in the fixed box, and the needs of different oil supplies can be met. The energy storage assembly is used in cooperation with the pressure tank, which can compress gas when the hydraulic cylinder is recovered, thereby forming high-pressure gas. When the parts are pressed, the high-pressure gas can assist in pressurizing the sliding plate, thereby meeting the needs of high pressure.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydraulic machines, and particularly relates to a high-pressure rapid long-stroke hydraulic machine and a control method thereof. BACKGROUND

[0002] A hydraulic machine is a kind of mechanical hydraulic machine for processing products such as metals, plastics, rubbers, woods and powders by using liquid static pressure and taking liquid as working medium according to Pascal's principle. The hydraulic machine is generally composed of a main machine, a power system and a hydraulic control system. Chinese patent 202210602828.9 discloses a high-pressure rapid long-stroke hydraulic machine, which comprises a base and an oil pump. Four vertical columns are arranged at the top corners of the base. An upper cross beam is arranged at the top of the vertical column. An ejection cylinder is arranged in the base. A back plate is welded at the top rear end of the upper cross beam. A pressurizing cabin is fixed at the front end of the back plate. A multi-stage hydraulic cylinder is connected to the bottom of the pressurizing cabin. An active cross beam is connected to the bottom of the multi-stage hydraulic cylinder. The active cross beam passes through the vertical column. An air storage chamber is connected to the top of the pressurizing cabin. The multi-stage hydraulic cylinder comprises a main cylinder. A first-stage rod is arranged at the bottom of the main cylinder. Oil holes are arranged at the bottom outer sides of the main cylinder and the first-stage rod. A flow direction controller is arranged at the top of the oil pump. The hydraulic machine effectively solves the problem of slow extension speed and limited impact force of the hydraulic machine on the market.

[0003] However, in the technical scheme, the two oil holes on the first-stage rod and the second-stage rod can only accelerate the retraction speed of the hydraulic cylinder, and the ejection still adopts the traditional bottom oil supply ejection, which cannot meet the actual demand for rapid demand. In addition, the hydraulic cylinder cannot change the hole diameter of the oil passage when supplying oil, which cannot meet different oil supply demands, thereby leading to poor use effect. SUMMARY

[0004] The purpose of the present application is to provide a high-pressure rapid long-stroke hydraulic machine and a control method thereof to solve the above problems.

[0005] To solve the above problems, the present application provides a technical scheme:

[0006] A high-pressure rapid long-stroke hydraulic machine comprises a base, a main cylinder, an adjusting assembly, a hole changing assembly and an energy storage assembly. A pressure bearing seat is fixedly connected to the top of the base. Four vertical rods are fixedly connected to the top of the pressure bearing seat in a symmetrical manner. A top plate is fixedly connected to the top of the four vertical rods. A sliding plate is slidably connected to the outside of the four vertical rods. The main cylinder is fixedly connected to the bottom of the top plate. A first-stage rod is slidably connected to the inside of the main cylinder. A second-stage rod is slidably connected to the inside of the first-stage rod. The bottom end of the second-stage rod is fixedly connected to the top of the sliding plate.

[0007] The inside of the main cylinder is provided with a first oil channel, the inside of the first lever is provided with a second oil channel, the inside of the main cylinder is provided with an oil return hole matched with the second oil channel, the inside of the oil return hole is fixedly connected with an oil return pipe, the inside of the oil return pipe is fixedly connected with a circulating pipe, one end of the circulating pipe extends into the inside of the main cylinder, the top of the base is fixedly connected with an oil pump, the top of the oil pump is fixedly connected with a distribution tank, the inside of the distribution tank is provided with an adjusting assembly, the top of the distribution tank is fixedly connected with a fixed tank, the top of the fixed tank is fixedly connected with an oil inlet pipe, one end of the oil inlet pipe extends into the inside of the first oil channel, the inside of the fixed tank is provided with a hole changing assembly, the top of the top plate is fixedly connected with a pressure tank, and the bottom of the top plate is provided with an energy storage assembly.

[0008] As a preferred, the adjusting assembly comprises an electric telescopic rod, a first sliding block, a first through hole, a fixed rod, a second sliding block, a second through hole and an input hole, the outside of the distribution tank is fixedly connected with an electric telescopic rod, the inside of the distribution tank is slidably connected with a first sliding block, one end of the electric telescopic rod penetrates through the distribution tank and is fixedly connected with the first sliding block, the inside of the distribution tank is provided with a first through hole matched with the first sliding block, the inside of the distribution tank is slidably connected with a second sliding block, the fixed rod is fixedly connected between the first sliding block and the second sliding block, the inside of the distribution tank is provided with a second through hole matched with the second sliding block, one side of the distribution tank away from the second through hole is provided with an input hole, and the output end of the oil pump extends into the inside of the input hole.

[0009] As a preferred, one end of the oil return pipe away from the main cylinder extends into the inside of the second through hole, the inside of the circulating pipe is provided with a first electromagnetic valve, the inside of the oil inlet pipe is fixedly connected with a return pipe, one end of the return pipe away from the oil inlet pipe extends into the inside of the oil pump, and the inside of the return pipe is provided with a second electromagnetic valve.

[0010] As a preferred, the hole changing assembly comprises a rotating disc, a flow guide hole, a worm ring, a servo motor and a worm, the inside of the fixed tank is rotatably connected with a rotating disc, a plurality of flow guide holes matched with the first through hole are equidistantly provided in the inside of the rotating disc, the outside of the rotating disc is sleeved with a worm ring, the outside of the fixed tank is fixedly connected with a servo motor, the output end of the servo motor penetrates through the fixed tank and is fixedly connected with a worm, and the worm is meshingly connected with the worm ring.

[0011] As preferred, the energy storage assembly comprises a high-pressure cavity, a first sleeve, a first air hole, a second sleeve and a second air hole, two high-pressure cavities are symmetrically arranged in the interior of the pressure tank, two first sleeves are symmetrically and fixedly connected to the interior of the top plate, a first air hole is arranged between each first sleeve and the corresponding high-pressure cavity, a second sleeve is slidably connected to the interior of the first sleeve, a second air hole is arranged in the interior of the second sleeve, a sliding rod is slidably connected to the interior of the second sleeve, and the bottom end of the sliding rod penetrates through the second sleeve and is fixedly connected to the top of the sliding plate.

[0012] As preferred, two air pressure gauges are symmetrically and fixedly connected to the interior of the pressure tank, the bottom end of each air pressure gauge extends to the interior of the corresponding high-pressure cavity, a pneumatic connector is fixedly connected to the top of the pressure tank and located on one side of the two air pressure gauges, and the bottom end of the pneumatic connector extends to the interior of the high-pressure cavity.

[0013] As preferred, an electric control box is fixedly connected to the top of the base and located on one side of the oil pump, and the first electromagnetic valve, the second electromagnetic valve, the electric telescopic rod and the servo motor are electrically connected to the electric control box, respectively.

[0014] A control method of a high-pressure rapid long-stroke hydraulic machine, comprising the following steps:

[0015] S1, turn on the servo motor through the electric control box, at this time the servo motor drives the worm to rotate in the fixed box, at this time the worm drives the worm gear ring outside the rotating disc to rotate, the rotating disc rotates to change the inside of the guide hole, and then different specifications of the guide hole are connected with the first through hole, at this time the oil inlet pipe, the guide hole and the first sliding block are in a connected state;

[0016] S2, when the first level rod and the second level rod need to be controlled to extend, open the first electromagnetic valve on the circulation pipe and close the second electromagnetic valve on the backflow pipe, then pull the first sliding block to slide in the oil distribution tank through the electric telescopic rod, so that the first sliding block contacts with the inner wall of the oil distribution tank, at this time the first through hole is misaligned with the first sliding block, so that the input hole is connected with the first through hole, and the first sliding block moves to cooperate with the fixed rod to slide the second sliding block, so that the second sliding block is coincided with the second through hole;

[0017] S3, the oil pump cooperates with the input hole to send oil into the oil distribution tank, the oil entering the oil distribution tank enters the fixed tank through the first through hole, and then enters the oil inlet pipe through the flow guide hole, and then the oil in the oil inlet pipe enters the first oil channel and pushes the first lever to move, when the first lever moves, the oil between the first lever and the main cylinder is transported to the oil return pipe through the oil return hole, and since the second through hole is closed by the second sliding block, the oil flows into the circulation pipe at this time, when the first lever is fully extended, the second oil channel coincides with the oil return hole, and under the action of pressure, the oil pushes the second lever to slide in the first lever, and then the oil between the second lever and the first lever is transported to the circulation pipe, and the oil entering the circulation pipe flows back to the main cylinder, and then cooperates with the oil transported by the oil inlet pipe to press the first lever and the second lever;

[0018] S4, when the second lever is extended, the sliding plate is pushed to move downward outside the vertical rod, thereby pressurizing the parts, and when the sliding plate moves, the sliding rod is extended from the second sleeve, and when the sliding rod is fully extended, the second sleeve slides downward in the first sleeve, at this time, the high-pressure gas in the high-pressure chamber enters the second sleeve through the first gas hole, and the high-pressure gas in the second sleeve enters the second sleeve through the second gas hole, thereby extruding the sliding rod with high-pressure gas, and pressurizing the sliding plate with the second lever;

[0019] S5, when the hydraulic cylinder needs to be recovered, the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the first sliding block and the second sliding block are pushed to move by the electric telescopic rod, thereby making the second sliding block dislocated from the second through hole and the first sliding block sealed from the first through hole, then the oil pump sends oil into the oil distribution tank, at this time, the oil enters the circulation pipe through the second through hole, and enters the main cylinder through the circulation pipe and the oil return hole, at this time, the oil pushes the first lever to move upward in the main cylinder and retract, when the first lever is fully moved into the main cylinder, the oil enters the first lever and the second lever through the second oil channel, thereby driving the second lever to retract into the first lever, and since the first sliding block seals the first through hole, at this time, the oil in the first oil channel enters the oil inlet pipe and returns to the oil pump through the return pipe;

[0020] S6, when the first lever and the second lever retract upward, the sliding plate moves upward outside the vertical rod, and when the sliding plate moves upward, the sliding rod and the second sleeve retract into the first sleeve, in this process, the gas in the second sleeve and the first sleeve is compressed into the high-pressure chamber again, the pressure in the high-pressure chamber can be detected through the pressure gauge, if the pressure in the high-pressure chamber is lower than the set value, the high-pressure chamber is connected with the air pump through the pneumatic joint, thereby supplementing the air in the high-pressure chamber.

[0021] The beneficial effects of the present application are: through the circulation pipe arranged between the main cylinder and the first lever, the oil stored between the first lever and the main cylinder and between the second lever and the first lever can be transported into the main cylinder when oil is supplied, thereby increasing the ejection pressure of the first lever and the second lever and improving the extension speed of the hydraulic cylinder; through the hole changing assembly arranged in the fixed box, the hole diameter of oil supply can be changed, thereby meeting the needs of different oil supply; through the energy storage assembly cooperating with the pressure tank for use, the gas can be compressed when the hydraulic cylinder is recovered, thereby forming high-pressure gas, and when the parts are pressed, the high-pressure gas can assist in pressurizing the slide plate, thereby meeting the needs of high pressure. BRIEF DESCRIPTION OF DRAWINGS

[0022] For ease of illustration, the present application is described in detail by the following specific embodiments and drawings.

[0023] Figure 1 is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 is a schematic diagram of the internal structure of the main cylinder and the first lever of the present application;

[0025] Figure 3 is a partial schematic diagram in the present application Figure 2 ;

[0026] Figure 4 is a schematic diagram of the internal structure of the fixed box of the present application;

[0027] Figure 5 is a schematic diagram of the contraction of the second lever and the first lever of the present application;

[0028] Figure 6 is a schematic diagram of the connection between the second sleeve and the pressure tank of the present application;

[0029] Figure 7 is an enlarged view of B in the present application Figure 6 .

[0030] In the figure: 1, base; 2, bearing seat; 3, vertical rod; 4, top plate; 5, sliding plate; 6, main cylinder; 7, primary lever; 8, secondary lever; 9, first oil passage; 10, second oil passage; 11, oil return hole; 12, oil return pipe; 13, circulating pipe; 14, first electromagnetic valve; 15, oil inlet pipe; 16, return pipe; 17, second electromagnetic valve; 18, oil pump; 19, oil distribution tank; 20, fixed tank; 21, adjusting assembly; 211, electric telescopic rod; 212, first sliding block; 213, first through hole; 214, fixed rod; 215, second sliding block; 216, second through hole; 217, input hole; 22, hole changing assembly; 221, rotating disc; 222, flow guide hole; 223, worm wheel ring; 224, servo motor; 225, worm; 23, pressure tank; 24, energy storage assembly; 241, high-pressure cavity; 242, first sleeve; 243, first air hole; 244, second sleeve; 245, second air hole; 246, sliding rod; 25, air pressure gauge; 26, pneumatic joint; 27, electric control box. DETAILED DESCRIPTION

[0031] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application, and the illustrative description of the above terms in the present specification does not necessarily refer to the same embodiment or example, and the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples, and in addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, provided that they do not contradict each other.

[0034] The following will be described in combination with Figures 1-7 The specific embodiments of the present application are described as follows:

[0035] Embodiment 1:

[0036] A high-pressure fast long-stroke hydraulic machine, comprising a base 1, a main cylinder 6, an adjusting assembly 21, a hole changing assembly 22 and an energy storage assembly 24, the top of the base 1 is fixedly connected with a pressure bearing seat 2, the top of the pressure bearing seat 2 is symmetrically fixedly connected with four vertical rods 3, the top of the four vertical rods 3 is fixedly connected with a top plate 4, the outside of the four vertical rods 3 is slidably connected with a sliding plate 5, the movement of the sliding plate 5 can be assisted by the vertical rods 3, so as to ensure that it can move vertically, the bottom of the top plate 4 is fixedly connected with the main cylinder 6, the inside of the main cylinder 6 is slidably connected with a primary rod 7, the inside of the primary rod 7 is slidably connected with a secondary rod 8, the bottom end of the secondary rod 8 is fixedly connected with the top of the sliding plate 5, through the cooperation of the main cylinder 6, the primary rod 7 and the secondary rod 8, two-stage telescopic can be realized, so as to improve the stroke of the hydraulic cylinder;

[0037] The inside of the main cylinder 6 is provided with a first oil channel 9, the inside of the first lever 7 is provided with a second oil channel 10, the inside of the main cylinder 6 is provided with an oil return hole 11 used in cooperation with the second oil channel 10, the inside of the oil return hole 11 is fixedly connected with an oil return pipe 12, the inside of the oil return pipe 12 is fixedly connected with a circulating pipe 13, one end of the circulating pipe 13 extends into the inside of the main cylinder 6, the first oil channel 9 in the inside of the main cylinder 6 can drive the first lever 7 and the second lever 8 to move, and the second oil channel 10 in the inside of the first lever 7 is used in cooperation, the oil between the first lever 7 and the main cylinder 6 and the oil between the second lever 8 and the first lever 7 can be transported into the inside of the circulating pipe 13, and then the circulating pipe 13 returns the oil to the inside of the main cylinder 6, the extension of the first lever 7 and the second lever 8 can be pressurized, the speed of the extension can be improved, the top of the base 1 is fixedly connected with an oil pump 18, the top of the oil pump 18 is fixedly connected with a distribution tank 19, the inside of the distribution tank 19 is provided with an adjusting assembly 21, the top of the distribution tank 19 is fixedly connected with a fixed tank 20, the top of the fixed tank 20 is fixedly connected with an oil inlet pipe 15, one end of the oil inlet pipe 15 extends into the inside of the first oil channel 9, the inside of the fixed tank 20 is provided with a hole changing assembly 22, the top of the top plate 4 is fixedly connected with a pressure tank 23, and the bottom of the top plate 4 is provided with an energy storage assembly 24.

[0038] The adjusting assembly 21 comprises an electric telescopic rod 211, a first sliding block 212, a first through hole 213, a fixed rod 214, a second sliding block 215, a second through hole 216 and an input hole 217, the outside of the distribution tank 19 is fixedly connected with the electric telescopic rod 211, the inside of the distribution tank 19 is slidably connected with the first sliding block 212, one end of the electric telescopic rod 211 penetrates through the distribution tank 19 and is fixedly connected with the first sliding block 212, the inside of the distribution tank 19 is provided with the first through hole 213 used in cooperation with the first sliding block 212, the inside of the distribution tank 19 is slidably connected with the second sliding block 215, the fixed rod 214 is fixedly connected between the first sliding block 212 and the second sliding block 215, the inside of the distribution tank 19 is provided with the second through hole 216 used in cooperation with the second sliding block 215, the side away from the second through hole 216 of the inside of the distribution tank 19 is provided with the input hole 217, the output end of the oil pump 18 extends into the inside of the input hole 217, the first sliding block 212 slides in the inside of the distribution tank 19 by the electric telescopic rod 211, the second sliding block 215 moves by the first sliding block 212 moving in cooperation with the fixed rod 214, and then the first sliding block 212 and the first through hole 213 are misaligned or coincided, and the relationship between the second sliding block 215 and the second through hole 216 is opposite, the communication and closure between the oil return pipe 12 or the oil inlet pipe 15 and the distribution tank 19 can be controlled, the oil supply and oil return can be met, and the flexibility of the device can be improved.

[0039] The oil return pipe 12 extends to the inside of the second through hole 216 away from the master cylinder 6, the inside of the circulating pipe 13 is provided with the first electromagnetic valve 14, the inside of the oil inlet pipe 15 is fixedly connected with the return pipe 16, the end of the return pipe 16 away from the oil inlet pipe 15 extends to the inside of the oil pump 18, the inside of the return pipe 16 is provided with the second electromagnetic valve 17, the opening and closing of the circulating pipe 13 and the return pipe 16 can be controlled through the first electromagnetic valve 14 and the second electromagnetic valve 17, thereby adapting to the ejection and retraction working conditions of the primary lever 7 and the secondary lever 8.

[0040] The inside of the fixed box 20 is rotatably connected with the rotating disc 221, a plurality of flow guide holes 222 matched with the first through hole 213 are equidistantly arranged in the inside of the rotating disc 221, the rotating disc 221 is externally sleeved with the worm wheel ring 223, the outside of the fixed box 20 is fixedly connected with the servo motor 224, the output end of the servo motor 224 penetrates through the fixed box 20 and is fixedly connected with the worm 225, the worm 225 is in meshing connection with the worm wheel ring 223, the servo motor 224 is turned on through the electric control box 27, at this time, the servo motor 224 drives the worm 225 to rotate in the inside of the fixed box 20, at this time, the worm 225 cooperates with the worm wheel ring 223 outside the rotating disc 221 to drive the rotating disc 221 to rotate, when the rotating disc 221 rotates, the inside of the flow guide hole 222 in the rotating disc 221 changes, thereby making the flow guide holes 222 of different specifications communicate with the first through hole 213, the hole diameter of oil delivery can be changed, thereby meeting the needs of different oil supply.

[0041] The inside of the pressure box 23 is symmetrically provided with two high-pressure cavities 241, the inside of the top plate 4 is symmetrically fixedly connected with two first sleeves 242, the first gas holes 243 are arranged between the two first sleeves 242 and the corresponding high-pressure cavities 241, the inside of the first sleeve 242 is slidably connected with the second sleeve 244, the second gas hole 245 is arranged in the inside of the second sleeve 244, the inside of the second sleeve 244 is slidably connected with the slide rod 246, the bottom end of the slide rod 246 penetrates through the second sleeve 244 and is fixedly connected with the top of the sliding plate 5, when the sliding plate 5 moves downward, the slide rod 246 and the second sleeve 244 are extended, thereby making the high-pressure gas in the high-pressure cavity 241 pressurize the sliding plate 5, the pressure of the hydraulic machine can be improved, when the sliding plate 5 moves upward, the slide rod 246 and the second sleeve 244 are retracted into the first sleeve 242, thereby compressing the gas into the high-pressure cavity 241 again, thereby forming high-pressure gas.

[0042] Two air pressure gauges 25 are symmetrically and fixedly connected inside the pressure tank 23, the bottom ends of the two air pressure gauges 25 extend to the inside of the corresponding high-pressure cavities 241 respectively, pneumatic connectors 26 are fixedly connected to the top of the pressure tank 23 and on one side of the two air pressure gauges 25 respectively, the bottom ends of the pneumatic connectors 26 extend to the inside of the high-pressure cavities 241, the pressure inside the high-pressure cavities 241 can be detected through the air pressure gauges 25, if the air pressure inside the high-pressure cavities 241 is lower than the set value, the pneumatic connectors 26 are connected with the air pump, and then the high-pressure cavities 241 are supplemented with air, so that the pressurizing effect of the hydraulic cylinder can be ensured.

[0043] The bottom end of the oil pump 18 is fixedly connected with an electric control box 27, the first electromagnetic valve 14, the second electromagnetic valve 17, the electric telescopic rod 211 and the servo motor 224 are electrically connected with the electric control box 27 respectively, so that the equipment can be centrally controlled, and then the staff can be conveniently operated.

[0044] Embodiment 2

[0045] A control method of a high-pressure rapid long-stroke hydraulic machine, comprising the following steps:

[0046] S1, the servo motor 224 is turned on through the electric control box 27, at this time the servo motor 224 drives the worm 225 to rotate in the inside of the fixed box 20, at this time the worm 225 cooperates with the worm gear ring 223 outside the rotating disc 221 to drive it to rotate, when the rotating disc 221 rotates, the inside of the guide hole 222 in the rotating disc 221 changes, and then different specifications of the guide hole 222 are communicated with the first through hole 213, at this time the oil inlet pipe 15, the guide hole 222 and the first sliding block 212 are in a communication state;

[0047] S2, when the first lever 7 and the second lever 8 need to be controlled to extend, the first electromagnetic valve 14 on the circulating pipe 13 is opened, and the second electromagnetic valve 17 on the backflow pipe 16 is closed, then the first sliding block 212 is pulled to slide in the oil distribution tank 19 through the electric telescopic rod 211, so that the first sliding block 212 contacts with the inner wall of the oil distribution tank 19, at this time the first through hole 213 is misaligned with the first sliding block 212, so that the input hole 217 is communicated with the first through hole 213, when the first sliding block 212 moves, the second sliding block 215 is replaced by the fixed rod 214 to slide, so that the second sliding block 215 is coincided with the second through hole 216;

[0048] S3, the oil pump 18 to the input hole 217 to the inside of the oil tank 19, the oil into the inside of the oil tank 19 through the first hole 213 into the fixed box 20 inside, and through the flow hole 222 into the oil pipe 15, then the oil inside the oil pipe 15 into the first oil channel 9 inside and push the first lever 7 to move, the first lever 7 moves when the oil between the main cylinder 6 through the return hole 11 to the return pipe 12, because the second hole 216 is closed by the second slider 215, at this time the oil to the inside of the circulation pipe 13, when the first lever 7 is fully extended, the second oil channel 10 and return hole 11 coincide, under the action of pressure, the oil to the inside of the circulation pipe 13, the oil into the circulation pipe 13 back to the inside of the main cylinder 6, and then cooperate with the oil delivered by the oil pipe 15 to the first lever 7 and the second lever 8 are pressed;

[0049] S4, the second lever 8 to push the sliding plate 5 in the outside of the vertical rod 3 down, in turn to the parts for pressure, the sliding plate 5 when the sliding rod 246 from the second sleeve 244 inside the extension, when the sliding rod 246 is fully extended, it drives the second sleeve 244 in the first sleeve 242 inside down, at this time the high pressure chamber 241 inside the high pressure gas through the first gas hole 243 into the second sleeve 244, the high pressure gas in the second sleeve 244 through the second gas hole 245 into the second sleeve 244 inside, in turn makes the high pressure gas to the sliding rod 246 extrusion, cooperate with the second lever 8 to the sliding plate 5 for pressure;

[0050] S5, need to recycle when the hydraulic cylinder, the first electromagnetic valve 14 is closed, the second electromagnetic valve 17 is opened, and through the electric telescopic rod 211 to push the first slider 212 and the second slider 215 move, in turn makes the second slider 215 and the second hole 216 between the dislocation, the first slider 212 and the first hole 213 between airtight, then the oil pump 18 to the inside of the oil tank 19, at this time the oil through the second hole 216 into the circulation pipe 13 inside, and through the circulation pipe 13 cooperate with the return hole 11 into the main cylinder 6 inside, at this time the oil to push the first lever 7 in the inside of the main cylinder 6 up move back, when the first lever 7 is fully moved to the inside of the main cylinder 6, the oil through the second oil channel 10 into the first lever 7 and the second lever 8, in turn drive the second lever 8 to retract to the inside of the first lever 7, because the first slider 212 will be the first hole 213 airtight, at this time the first oil channel 9 into the oil pipe 15 inside the oil through the return pipe 16 back to the oil pump 18;

[0051] S6, when the primary rod 7 and the secondary rod 8 retract upward, the sliding plate 5 moves upward on the outside of the vertical rod 3, and the sliding rod 246 and the second sleeve 244 retract into the first sleeve 242, in the process, the gas inside the second sleeve 244 and the first sleeve 242 is compressed again through the first gas hole 243 to the inside of the high-pressure cavity 241 for storage, the pressure inside the high-pressure cavity 241 can be detected through the air pressure gauge 25, if the air pressure inside the high-pressure cavity 241 is lower than the set value, the high-pressure cavity 241 is connected with the air pump through the pneumatic connector 26, and then the inside of the high-pressure cavity 241 is supplemented with air.

[0052] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure, high-speed, long-stroke hydraulic press, characterized in that, The system includes a base (1), a main cylinder (6), an adjustment assembly (21), a hole-changing assembly (22), and an energy storage assembly (24). A pressure-bearing seat (2) is fixedly connected to the top of the base (1). Four uprights (3) are symmetrically fixedly connected to the top of the pressure-bearing seat (2). A top plate (4) is fixedly connected to the top of the four uprights (3). A sliding plate (5) is slidably connected to the outside of the four uprights (3). The main cylinder (6) is fixedly connected to the bottom of the top plate (4). A first-stage rod (7) is slidably connected inside the main cylinder (6). A second-stage rod (8) is slidably connected inside the first-stage rod (7). The bottom end of the second-stage rod (8) is fixedly connected to the top of the sliding plate (5). The main cylinder (6) has a first oil passage (9) inside, the first stage rod (7) has a second oil passage (10) inside, the main cylinder (6) has a return oil hole (11) that works in conjunction with the second oil passage (10), the return oil hole (11) is fixedly connected to a return oil pipe (12), the return oil pipe (12) is fixedly connected to a circulation pipe (13), and one end of the circulation pipe (13) extends into the main cylinder (6). The top of the base (1) is fixedly connected to an oil pump (18). The top of the top plate (4) is fixedly connected to an oil distribution tank (19), and an adjustment component (21) is provided inside the oil distribution tank (19). The top of the oil distribution tank (19) is fixedly connected to a fixed box (20), and an oil inlet pipe (15) is fixedly connected to the top of the fixed box (20). One end of the oil inlet pipe (15) extends into the interior of the first oil passage (9). A hole changing component (22) is provided inside the fixed box (20). A pressure box (23) is fixedly connected to the top of the top plate (4), and an energy storage component (24) is provided at the bottom of the top plate (4). The adjusting assembly (21) includes an electric telescopic rod (211), a first slider (212), a first through hole (213), a fixed rod (214), a second slider (215), a second through hole (216), and an input hole (217). The electric telescopic rod (211) is fixedly connected to the outside of the oil distribution tank (19), and the first slider (212) is slidably connected to the inside of the oil distribution tank (19). One end of the electric telescopic rod (211) passes through the oil distribution tank (19) and is fixedly connected to the first slider (212). The inside of the oil distribution tank (19) has an opening. A first through hole (213) is used in conjunction with the first slider (212). A second slider (215) is slidably connected inside the oil distribution tank (19). A fixing rod (214) is fixedly connected between the first slider (212) and the second slider (215). A second through hole (216) is opened inside the oil distribution tank (19) to cooperate with the second slider (215). An input hole (217) is opened inside the oil distribution tank (19) on the side away from the second through hole (216). The output end of the oil pump (18) extends into the interior of the input hole (217). The hole-changing assembly (22) includes a turntable (221), a guide hole (222), a worm gear ring (223), a servo motor (224), and a worm (225). The turntable (221) is rotatably connected inside the fixed box (20). The turntable (221) has multiple guide holes (222) equidistantly opened inside to cooperate with the first through hole (213). The worm gear ring (223) is sleeved on the outside of the turntable (221). The servo motor (224) is fixedly connected to the outside of the fixed box (20). The output end of the servo motor (224) passes through the fixed box (20) and is fixedly connected to the worm (225). The worm (225) and the worm gear ring (223) are meshed together. The energy storage component (24) includes a high-pressure chamber (241), a first sleeve (242), a first vent (243), a second sleeve (244), and a second vent (245). The pressure box (23) has two high-pressure chambers (241) symmetrically arranged inside. The top plate (4) has two first sleeves (242) symmetrically fixedly connected inside. Each of the two first sleeves (242) and the corresponding high-pressure chamber (241) has a first vent (243) opened between them. The first sleeve (242) has a second sleeve (244) slidably connected inside. The second sleeve (244) has a second vent (245) opened inside. The second sleeve (244) has a sliding rod (246) slidably connected inside. The bottom end of the sliding rod (246) passes through the second sleeve (244) and is fixedly connected to the top of the slide plate (5).

2. The high-pressure, high-speed, long-stroke hydraulic press according to claim 1, characterized in that, The end of the return pipe (12) away from the master cylinder (6) extends into the interior of the second through hole (216). The interior of the circulation pipe (13) is provided with a first solenoid valve (14). The interior of the inlet pipe (15) is fixedly connected with a return pipe (16). The end of the return pipe (16) away from the inlet pipe (15) extends into the interior of the oil pump (18). The interior of the return pipe (16) is provided with a second solenoid valve (17).

3. A high-pressure, high-speed, long-stroke hydraulic press according to claim 1, characterized in that, The pressure box (23) is symmetrically and fixedly connected to two pressure gauges (25). The bottom ends of the two pressure gauges (25) extend into the interior of the corresponding high pressure chamber (241). The top of the pressure box (23) and one side of the two pressure gauges (25) are respectively fixedly connected to pneumatic connectors (26). The bottom ends of the pneumatic connectors (26) extend into the interior of the high pressure chamber (241).

4. A high-pressure, high-speed, long-stroke hydraulic press according to claim 2, characterized in that, An electrical control box (27) is fixedly connected to the top of the base (1) and to one side of the oil pump (18). The first solenoid valve (14), the second solenoid valve (17), the electric telescopic rod (211), and the servo motor (224) are electrically connected to the electrical control box (27).

5. A control method for a high-pressure, high-speed, long-stroke hydraulic press, characterized in that, Includes the following steps: S1. Turn on the servo motor (224) through the electrical control box (27). At this time, the servo motor (224) drives the worm (225) to rotate inside the fixed box (20). At this time, the worm (225) cooperates with the worm wheel ring (223) outside the turntable (221) to drive it to rotate. When the turntable (221) rotates, it changes the interior of the internal guide hole (222), thereby making the guide holes (222) of different specifications connected with the first through hole (213). At this time, the oil inlet pipe (15), the guide hole (222) and the first slider (212) are in a connected state. S2. When it is necessary to control the extension of the first-level rod (7) and the second-level rod (8), open the first solenoid valve (14) on the circulation pipe (13) and close the second solenoid valve (17) on the return pipe (16). Then, pull the first slider (212) to slide inside the oil distribution tank (19) by the electric telescopic rod (211), so that the first slider (212) contacts the inner wall of the oil distribution tank (19). At this time, the first through hole (213) and the first slider (212) are misaligned, so that the input hole (217) is connected to the first through hole (213). When the first slider (212) moves, it cooperates with the fixing rod (214) to slide in place of the second slider (215), so that the second slider (215) coincides with the second through hole (216). S3. Oil is pumped into the oil distribution tank (19) through the oil pump (18) and the inlet port (217). The oil entering the oil distribution tank (19) enters the fixed box (20) through the first through hole (213) and enters the oil inlet pipe (15) through the guide hole (222). Then, the oil in the oil inlet pipe (15) enters the first oil passage (9) and pushes the first stage rod (7) to move. When the first stage rod (7) moves, the oil between it and the master cylinder (6) is transported to the return pipe (12) through the return oil hole (11). Since the second through hole (216) is blocked by the oil pump (18), the oil pump (18) is pumped into the oil distribution tank (19) through the inlet port (217). The second slider (215) is closed, and at this time the oil flows into the circulation pipe (13). When the first rod (7) is fully extended, the second oil passage (10) coincides with the return oil hole (11). Under the action of pressure, the oil pushes the second rod (8) to slide inside the first rod (7), and then transports the oil between the second rod (8) and the first rod (7) to the circulation pipe (13). The oil that enters the circulation pipe (13) flows back to the main cylinder (6), and then, together with the oil transported by the oil inlet pipe (15), it presses against the first rod (7) and the second rod (8). S4. When the secondary rod (8) extends, it pushes the slide plate (5) to move downward outside the upright rod (3), thereby pressurizing the part. When the slide plate (5) moves, it drives the slide rod (246) to extend out from inside the second sleeve (244). When the slide rod (246) is fully extended, it drives the second sleeve (244) to slide down inside the first sleeve (242). At this time, the high pressure gas inside the high pressure chamber (241) enters the second sleeve (244) through the first air hole (243). The high pressure gas inside the second sleeve (244) enters the second sleeve (244) through the second air hole (245), thereby causing the high pressure gas to squeeze the slide rod (246) and pressurize the slide plate (5) in conjunction with the secondary rod (8). S5. When the hydraulic cylinder needs to be retracted, close the first solenoid valve (14), open the second solenoid valve (17), and push the first slider (212) and the second slider (215) to move via the electric telescopic rod (211), thereby causing the second slider (215) to be misaligned with the second through hole (216), and sealing the first slider (212) with the first through hole (213). Then, the oil pump (18) sends oil into the oil distribution tank (19). At this time, the oil enters the circulation pipe (13) through the second through hole (216) and flows through the circulation pipe (13). When the oil returns through the return hole (11) into the main cylinder (6), the oil pushes the first rod (7) to move upward and retract inside the main cylinder (6). When the first rod (7) has moved completely into the main cylinder (6), the oil enters between the first rod (7) and the second rod (8) through the second oil passage (10), thereby driving the second rod (8) to retract into the first rod (7). Since the first slider (212) seals the first through hole (213), the oil enters the oil inlet pipe (15) through the first oil passage (9) and flows back to the oil pump (18) through the return pipe (16). When S6, the first-level rod (7) and the second-level rod (8) retract upwards, the sliding plate (5) moves upwards outside the upright rod (3). When the sliding plate (5) moves upwards, it drives the sliding rod (246) and the second sleeve (244) to retract into the first sleeve (242). During this process, the gas inside the second sleeve (244) and the first sleeve (242) is compressed again through the first air hole (243) and stored inside the high-pressure chamber (241). The pressure inside the high-pressure chamber (241) can be detected by the pressure gauge (25). If the air pressure inside the high-pressure chamber (241) is lower than the set value, it is connected to the air pump through the pneumatic connector (26) to replenish the air inside the high-pressure chamber (241).

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