WO2022246656A1 - 液压油路系统和液压千斤顶 - Google Patents

液压油路系统和液压千斤顶 Download PDF

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Publication number
WO2022246656A1
WO2022246656A1 PCT/CN2021/095858 CN2021095858W WO2022246656A1 WO 2022246656 A1 WO2022246656 A1 WO 2022246656A1 CN 2021095858 W CN2021095858 W CN 2021095858W WO 2022246656 A1 WO2022246656 A1 WO 2022246656A1
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WIPO (PCT)
Prior art keywords
oil
hydraulic
cylinder
chamber
oil chamber
Prior art date
Application number
PCT/CN2021/095858
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English (en)
French (fr)
Inventor
詹勇勇
杜新法
王松峰
阮彬豪
Original Assignee
杭州天铭科技股份有限公司
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Application filed by 杭州天铭科技股份有限公司 filed Critical 杭州天铭科技股份有限公司
Priority to PCT/CN2021/095858 priority Critical patent/WO2022246656A1/zh
Publication of WO2022246656A1 publication Critical patent/WO2022246656A1/zh

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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
    • B66F3/30—Constructional features with positive brakes or locks
    • 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
    • B66F3/43—Pyrotechnical jacks

Definitions

  • the present application relates to the field of mechanical equipment, in particular to a hydraulic oil circuit system and a hydraulic jack.
  • the hydraulic jack in the related art is to convert the oil in the two areas of the jack to drive the telescopic rod to move back and forth, and realize the function of the jack through the one-way valve and the cross-sectional difference.
  • hydraulic jacks can lift heavy objects only by pressing down on a single piston.
  • the piston only has a lifting stroke when it presses down on a heavy object, and there is no lifting stroke when the piston lifts up.
  • the support block of the jack is fixed. If the heavy object is too far away from the support block, the jack will not support the heavy object or most of the lifting stroke will be wasted on the empty stroke.
  • a hydraulic oil circuit system of a hydraulic jack including:
  • a hydraulic cylinder body, a piston is arranged in the hydraulic cylinder body, and the piston divides the hydraulic cylinder body into a first hydraulic oil chamber and a second hydraulic oil chamber, the first hydraulic oil chamber has a first oil port, The second hydraulic oil chamber has a second oil port;
  • the load oil chamber, the first oil port and the second oil port are in unidirectional communication with the load oil chamber, and both the first oil port and the second oil port can supply the load oil Cavity one-way flow;
  • the reserve oil chamber, the first oil port and the second oil port are in unidirectional communication with the reserve oil chamber, and the reserve oil chamber can be connected to the first oil port and the second oil port respectively one-way circulation;
  • the oil unloading pipeline communicates with the load oil chamber and the reserve oil chamber;
  • the hydraulic cylinder is a double-acting hydraulic cylinder, and the reciprocating movement of the piston can change the volumes of the first hydraulic oil chamber and the second hydraulic oil chamber, so that the first oil port and the second hydraulic oil chamber One of the two oil ports delivers hydraulic oil to the load oil chamber, while the other sucks oil from the reserve oil chamber.
  • the hydraulic oil circuit system has the advantage of high working efficiency.
  • the first oil port communicates with the reserve oil chamber through a first oil inlet passage, and communicates with the load oil chamber through a first oil outlet passage, and the first oil inlet port
  • a first one-way valve is set on the road, and a second one-way valve is set on the first oil outlet line;
  • the second oil port communicates with the reserve oil chamber through the second oil inlet, and communicates with the load oil chamber through the second oil outlet.
  • a third check valve is arranged on the second oil inlet.
  • a fourth one-way valve is arranged on the second oil outlet.
  • a first overload protection oil circuit is connected between the first hydraulic oil chamber and the reserve oil chamber,
  • a second overload protection oil circuit is connected between the second hydraulic oil chamber and the reserve oil chamber.
  • Embodiments of the application also propose a hydraulic jack, comprising:
  • an outer oil cylinder the outer oil cylinder is provided with a handle
  • an inner oil cylinder an outer oil cylinder sleeved outside the inner oil cylinder and capable of moving relative to the inner oil cylinder, the outer oil cylinder and the inner oil cylinder define a reserve oil chamber;
  • a hydraulic cylinder block the hydraulic cylinder block is arranged in the inner oil cylinder, and can seal and move along the axial direction of the inner oil cylinder, and the two ends of the hydraulic cylinder block are respectively the load oil chamber and the reserve oil chamber chamber;
  • the hydraulic cylinder is provided with a piston, and the piston divides the hydraulic cylinder into a first hydraulic oil chamber and a second hydraulic oil chamber, the first hydraulic oil chamber has a first oil port, the The second hydraulic oil chamber has a second oil port; both the first oil port and the second oil port communicate with the load oil chamber in one direction, and make the first oil port and the second oil port Both can communicate to the load oil chamber in one direction; both the first oil port and the second oil port are in one-way communication with the reserve oil chamber, and enable the reserve oil chamber to flow to the first oil chamber respectively.
  • the oil port and the second oil port communicate in one direction;
  • the hydraulic cylinder block has an oil unloading pipeline, and the oil unloading pipeline communicates with the load oil chamber and the reserve oil chamber;
  • a piston rod one end of the piston rod is connected to the piston, and the other end is connected to the handle, so that the handle can drive the piston to reciprocate through the piston rod to change the first hydraulic oil chamber and the volume of the second hydraulic oil chamber, so that one of the first oil port and the second oil port delivers hydraulic oil to the load oil chamber while the other sucks oil from the reserve oil chamber .
  • the hydraulic jack has the advantage of high working efficiency.
  • the outer oil cylinder is provided with an oil cylinder cover, and the oil cylinder cover is sealed and arranged on the top of the outer oil cylinder, the handle is hinged to the oil cylinder cover, and the piston A rod passes through the oil tank cover and is hinged to the handle.
  • the outer oil cylinder is provided with a sleeve, the sleeve is fixedly connected to the bottom of the outer oil cylinder, the sleeve is sleeved outside the inner oil cylinder, and can sealingly slides along the outer wall of the inner oil barrel.
  • At least a partial area of the inner wall of the sleeve is provided with a sleeve, the sleeve is coaxially arranged with the sleeve, and is fixed relative to the sleeve, and the sleeve covers on the outer wall of the inner oil cylinder, and can move relative to the axial direction of the inner oil cylinder.
  • the bottom of the inner oil cylinder is provided with a base sealing body, and the base sealing body seals the bottom of the inner oil cylinder;
  • the top of the inner oil cylinder is located under the oil cylinder cover and is open in the inner cavity of the outer oil cylinder.
  • the sealing body of the base is connected to the base, and the outer wall of the inner oil cylinder is provided with a limiting component, and the limiting component is used to limit the movement range of the outer oil cylinder, and the limiting component The component is located at the upper middle of the inner oil cylinder.
  • the hydraulic cylinder block includes: an oil passage main body, an oil passage cover, and an oil passage lower cover;
  • the outer wall of the oil passage main body is in sealing contact with the inner wall of the inner oil barrel, and enables the oil passage main body to move axially relative to the inner oil barrel;
  • a hydraulic oil chamber penetrating through the oil passage body is formed in the oil passage main body, the piston is arranged in the hydraulic oil chamber, and divides the hydraulic oil chamber into the first hydraulic oil chamber and the second hydraulic oil chamber.
  • the oil unloading pipeline is formed on the main body of the oil passage;
  • the oil upper cover is sealed on the upper end of the hydraulic oil cavity
  • the oil lower cover is sealed on the lower end of the hydraulic oil cavity
  • the piston rod is connected to the piston through the oil upper cover.
  • the first oil port communicates with the reserve oil chamber through a first oil inlet passage, and communicates with the load oil chamber through a first oil outlet passage, and the first oil inlet port
  • a first one-way valve is set on the road, and a second one-way valve is set on the first oil outlet line;
  • the second oil port communicates with the reserve oil chamber through the second oil inlet, and communicates with the load oil chamber through the second oil outlet.
  • a third check valve is arranged on the second oil inlet.
  • a fourth one-way valve is arranged on the second oil outlet.
  • the first oil inlet passage is formed on the oil passage cover, the first oil outlet passage and the second oil inlet passage are both formed on the oil passage main body, the The second oil outlet passage is formed on the lower cover of the oil passage.
  • the upper end of the oil channel body is formed with a first sinker
  • the lower end of the oil channel body is formed with a second sinker
  • at least part of the structure of the oil cover is arranged on the In the first sinker
  • at least part of the structure of the lower cover of the oil passage is arranged in the second sinker
  • the inlet of the first oil outlet is located in the first sinker, and the outlet of the second oil inlet is located in the second sinker.
  • an oil discharge rod is arranged in the inner oil cylinder, one end of the oil discharge rod is arranged on the oil discharge pipeline, and the other end passes through the oil cylinder cover and is connected to the oil discharge pipe.
  • the oil discharge handle is hinged to the oil tank cover, and can control the connection and closure of the oil discharge pipeline through the oil discharge rod.
  • a first overload protection oil circuit is connected between the first hydraulic oil chamber and the reserve oil chamber,
  • a second overload protection oil circuit is connected between the second hydraulic oil chamber and the reserve oil chamber.
  • the hydraulic cylinder block includes: an oil passage main body, an oil passage cover, and an oil passage lower cover;
  • the outer wall of the oil passage main body is in sealing contact with the inner wall of the inner oil barrel, and enables the oil passage main body to move axially relative to the inner oil barrel;
  • a hydraulic oil chamber penetrating through the oil passage body is formed in the oil passage main body, the piston is arranged in the hydraulic oil chamber, and divides the hydraulic oil chamber into the first hydraulic oil chamber and the second hydraulic oil chamber.
  • the oil upper cover is sealed on the upper end of the hydraulic oil chamber, and the oil lower cover is sealed on the lower end of the hydraulic oil chamber;
  • the first overload protection oil passage is arranged on the oil cover, and the second overload protection oil passage is arranged on the piston rod.
  • a first pressure one-way valve is set on the first overload protection oil circuit
  • a second pressure one-way valve is set on the second overload protection oil circuit
  • the first pressure one-way valve The valve is opened when the pressure difference on both sides is greater than a first preset value
  • the second pressure check valve is opened when the pressure difference on both sides is greater than a second preset value.
  • a piston cylinder is sheathed on the outside of the piston rod, one end of the piston cylinder is connected to the oil cylinder cover, and the other end is connected to the hydraulic cylinder block.
  • the piston rod includes an upper piston rod and a lower piston rod connected to each other, the upper piston rod is connected to the handle, and the lower piston rod is connected to the piston.
  • the outer wall of the outer oil cylinder is provided with a bearing assembly
  • the outer wall of the outer oil cylinder has multiple fixing positions
  • the bearing assembly can be fixed at any of the fixing positions, and can be Move between any two fixed positions.
  • each of the fixed positions is provided with a card slot
  • the bearing assembly includes: a slider, a latch and a top block
  • the slider is sheathed on the outer wall of the outer oil barrel and can move relative to the outer oil barrel.
  • a bolt installation groove is opened on the slider, and the bolt is hinged to the bolt installation groove.
  • the bolt having an open state and a locked state, and being switchable between said open state and said locked state;
  • the slider In the open state, the slider can move relative to the outer oil cylinder;
  • part of the structure of the bolt is located in the installation groove of the bolt, and part of the structure is located in the groove, so that the slider is fixed relative to the outer oil cylinder;
  • the top block is installed on the slider and can move with the slider.
  • the slider is provided with an elastic push assembly
  • the latch is provided with a groove.
  • the elastic push assembly pushes against the groove.
  • the elastic push assembly includes screws, springs and push balls
  • the slider is provided with installation through holes
  • the screws, springs and push balls are arranged in the installation through holes
  • the The spring is located between the screw and the top ball, and a part of the top ball can leak out from the end of the installation through hole to abut against the groove.
  • the top block is detachably connected to the slider.
  • an insertion slot is opened on the slider, and the insertion slot includes a first guide portion and a limiting portion;
  • the top block has an insertion part, and the insertion part includes a second guide part and a limit block,
  • the insertion part can be inserted into the insertion slot, and the second guide part is matched with the first guide part, and the limit block is matched with the limit part.
  • Fig. 1 is a schematic diagram of a hydraulic oil circuit system in an embodiment of the present application
  • Fig. 2 is a schematic sectional view of a hydraulic jack on a first sectional plane in an embodiment of the present application
  • Fig. 3 is a partially enlarged schematic diagram A of Fig. 2;
  • Fig. 4 is a partial sectional view of the hydraulic jack on the second sectional plane in an embodiment of the present application
  • Fig. 5 is a partially enlarged schematic diagram B of Fig. 4;
  • Fig. 6 is a top view of the assembly of components such as the hydraulic cylinder block and the piston rod in an embodiment of the present application;
  • Fig. 7 is a schematic sectional view along A-A of Fig. 6;
  • Fig. 8 is a schematic cross-sectional view along B-B of Fig. 6;
  • Figure 9 and Figure 10 are three-dimensional schematic diagrams of the main body of the oil passage at different angles in an embodiment of the present application.
  • Fig. 11 is an exploded schematic diagram of the bearing assembly installed in the outer oil cylinder in an embodiment of the present application.
  • Figure 12 and Figure 13 are cross-sectional views of the bearing assembly installed in the outer oil cylinder in an embodiment of the present application;
  • Figure 14 and Figure 15 are the installation of the bearing assembly on the outer oil cylinder in an embodiment of the present application, where the pins are located in different positions;
  • Fig. 16 is a schematic diagram of the three-dimensional structure of the slider and the top block in an embodiment of the present application.
  • Fig. 17 is a schematic diagram of a hydraulic jack used as a manual winch in an embodiment of the present application.
  • 101-oil circuit main body 101-oil circuit main body; 102-oil circuit cover; 103-oil circuit lower cover;
  • 80-bearing assembly 80-bearing assembly; 81-slider; 811-bolt installation slot; 812-elastic push assembly; 8121-screw; 8122-spring; 8123-top ball;
  • this embodiment provides a hydraulic oil circuit system of a hydraulic jack, which can be used to lift heavy objects or tow heavy objects, depending on the purpose and method of use.
  • the hydraulic oil circuit system mainly includes: a hydraulic cylinder block 10, a load oil chamber 20, a reserve oil chamber 30 and an oil discharge pipeline 21;
  • the hydraulic cylinder block 10 is provided with a piston 13, and the piston 13 divides the interior of the hydraulic cylinder block 10 into a first hydraulic oil chamber 11 and a second hydraulic oil chamber 12, the first hydraulic oil chamber 11 has a first oil port, and the second hydraulic oil chamber 12
  • the oil chamber 12 has a second oil port; both the first oil port and the second oil port communicate with the load oil chamber 20 in one direction, and enable the first oil port and the second oil port to communicate with the load oil chamber 20 in one direction; Both the first oil port and the second oil port communicate with the reserve oil chamber 30 in one direction, and enable the reserve oil chamber 30 to communicate with the first oil port and the second oil port respectively;
  • the hydraulic cylinder block 10 is a double-acting hydraulic cylinder body, that is to say, the first hydraulic oil chamber 11 and the second hydraulic oil chamber 12 are both working chambers, so that the reciprocating movement of the piston 13 can change the volumes of the first hydraulic oil chamber 11 and the second hydraulic oil chamber 12, so that the first One of the first oil port and the second oil port delivers hydraulic oil to
  • the bearing assembly 80 for supporting heavy objects can be arranged outside the reserve oil chamber 30 and fixedly arranged relative to the reserve oil chamber 30 .
  • the bearing assembly 80 may not be provided separately, but may directly use the external structure of the reserve oil chamber 30 to realize the function of supporting heavy objects.
  • an oil unloading pipeline 21 is also provided, and the oil unloading pipeline 21 is connected to the load oil chamber 20 and the reserve oil chamber 30; The hydraulic oil in 20 flows into the reserve oil chamber 30.
  • An oil unloading switch 211 is arranged on the oil unloading pipeline 21 , and the oil unloading switch 211 can control the opening and closing of the oil unloading pipeline 21 .
  • the first oil port communicates with the reserve oil chamber 30 through the first oil inlet passage 111 and communicates with the load oil chamber 20 through the first oil outlet passage 112.
  • the first oil inlet passage 111 is provided with a first One-way valve 113
  • the second one-way valve 114 is set on the first oil outlet 112
  • the second oil port communicates with the reserve oil chamber 30 through the second oil inlet 121, and communicates with the load oil through the second oil outlet
  • the cavity 20 is connected, the second oil inlet passage 121 is provided with a third one-way valve 123 , and the second oil outlet passage 122 is provided with a fourth one-way valve 124 .
  • the one-way communication between the first oil port and the second oil port and the load oil chamber 20 and the one-way communication between the first oil port and the second oil port and the reserve oil chamber 30 are realized.
  • a first overload protection oil circuit 115 is connected between the first hydraulic oil chamber 11 and the reserve oil chamber 30
  • a second overload protection oil circuit is connected between the second hydraulic oil chamber 12 and the reserve oil chamber 30 125.
  • the first overload protection oil circuit 115 is opened to release pressure to the reserve oil chamber 30 to avoid damage to the hydraulic cylinder block 10.
  • the second overload protection oil circuit 125 is opened to release the pressure to the reserve oil chamber 30 to avoid damage to the hydraulic cylinder block 10 .
  • a first pressure one-way valve 1151 may be provided on the first overload protection oil circuit 115
  • a second pressure one-way valve 1251 may be provided on the second overload protection oil circuit 125 . Both the first pressure one-way valve 1151 and the second pressure one-way valve 1251 can only be opened under a preset pressure, and the values of the two preset pressures can be the same or different.
  • a hydraulic jack is further provided in this embodiment, and the hydraulic jack includes: an outer oil cylinder 40, an inner oil cylinder 50, a hydraulic cylinder block 10 and a piston rod 60,
  • the outer oil cylinder 40 is provided with a handle 41; the outer oil cylinder 40 is sleeved outside the inner oil cylinder 50, and can move relative to the inner oil cylinder 50, and the outer oil cylinder 40 and the inner oil cylinder 50 define a reserve oil chamber 30;
  • the reserve oil chamber 30 can be in the inner oil cylinder 50, also can be between the outer oil cylinder 40 and the inner oil cylinder 50, also can be both in the inner oil cylinder 50 and between the outer oil cylinder 40 and the inner oil cylinder 50 .
  • the hydraulic cylinder block 10 is arranged in the inner oil cylinder 50, and can seal and move along the axial direction of the inner oil cylinder 50.
  • the two ends of the hydraulic cylinder block 10 are respectively the load oil chamber 20 and the reserve oil chamber 30;
  • There is a piston 13, and the piston 13 divides the interior of the hydraulic cylinder block 10 into a first hydraulic oil chamber 11 and a second hydraulic oil chamber 12, the first hydraulic oil chamber 11 has a first oil port, and the second hydraulic oil chamber 12 has a second oil port ;
  • Both the first oil port and the second oil port are in one-way communication with the load oil chamber 20, and both the first oil port and the second oil port can flow to the load oil chamber 20 in one direction;
  • the ports are all in one-way communication with the reserve oil chamber 30, and enable the reserve oil chamber 30 to communicate with the first oil port and the second oil port respectively;
  • the hydraulic cylinder block 10 has an oil discharge pipeline 21, and the oil discharge pipeline 21 communicates with the load oil chamber 20 and reserve oil
  • One end of the piston rod 60 is connected to the piston 13, and the other end is connected to the handle 41, so that the handle 41 can drive the piston 13 to move back and forth through the piston rod 60, so as to change the volumes of the first hydraulic oil chamber 11 and the second hydraulic oil chamber 12, Therefore, one of the first oil port and the second oil port delivers hydraulic oil to the load oil chamber 20 , while the other absorbs oil from the reserve oil chamber 30 .
  • the piston rod 60 also plays a certain supporting role.
  • the hydraulic oil in the load oil chamber 20 increases, the hydraulic cylinder block 10 is pushed to move upward, and the supporting force is transmitted to the handle 41 through the piston rod 60, and further to the
  • the outer oil cylinder 40 makes the hydraulic cylinder block 10 , the outer oil cylinder 40 and the piston rod 60 move upward relative to the inner oil cylinder 50 synchronously, so as to realize the effect of jacking or traction.
  • the outer oil cylinder 40 is provided with an oil cylinder cover 42, and the oil cylinder cover 42 is sealed on the top of the outer oil cylinder 40, the handle 41 is hinged to the oil cylinder cover 42, and the piston rod 60 passes through the oil cylinder cover 42 and The handle 41 is hinged. That is to say, the top of the outer oil cylinder 40 in this embodiment is sealed by the oil cylinder cover 42 , and the oil cylinder cover 42 also plays the role of installing the handle 41 .
  • the outer oil cylinder 40 is provided with a sleeve 43, the sleeve 43 is fixedly connected to the bottom of the outer oil cylinder 40, the sleeve 43 is sleeved outside the inner oil cylinder 50, and can be along the inner oil cylinder 50.
  • the outer wall is sealed to slide.
  • the sleeve 43 can act as a seal at the bottom of the outer oil cylinder 40, and at the same time play a guiding role to ensure the coaxiality of the outer oil cylinder 40 and the inner oil cylinder 50, and prevent the outer oil cylinder 40 from skewing during the rising process.
  • the shaft sleeve 431 is coaxially arranged with the sleeve 43, and fixed relative to the sleeve 43, the sleeve 43 is sleeved on the outer wall of the inner oil cylinder 50, and can be relatively Axial movement of the inner oil cylinder 50.
  • the shaft sleeve 431 also plays a guiding role, and multiple shaft sleeves 431 can be provided. As shown in FIG. 3 , one shaft sleeve 431 is respectively provided at the upper and lower ends of the sleeve 43 .
  • the bottom of the inner oil cylinder 50 is provided with a base sealing body 51, and the base sealing body 51 seals the bottom of the inner oil cylinder 50;
  • the inner cavity is open.
  • the inner cavity of the inner oil cylinder 50 communicates with the inner cavity of the outer oil cylinder 40
  • the reserve oil chamber 30 is formed in the inner cavity of the oil cylinder 50 and the inner cavity of the outer oil cylinder 40 .
  • the bottom of the inner oil cylinder 50 may not be provided with a base sealing body 51, but the bottom of the inner oil cylinder 50 is directly designed as a sealed structure, that is to say, the inner oil cylinder 50 may be a cylinder with only one upper opening.
  • the bottom of the inner oil cylinder 50 is provided with a base sealing body 51 for sealing.
  • the sealing body 51 of the base can also be used as the supporting base of the hydraulic jack, and a larger supporting surface can be designed. Also can specially design a base 52.
  • the base sealing body 51 is connected to a base 52 , and the base 52 is detachably connected to the base sealing body 51 .
  • the base 52 can also be removed for use when necessary.
  • the outer wall of the inner oil cylinder 50 is provided with a limiting component 53 , the limiting component 53 is used to limit the movement range of the outer oil cylinder 40 , and the limiting component 53 is located at the upper middle of the inner oil cylinder 50 position, the limiting member 53 is fixed relative to the inner oil cylinder 50 .
  • the hydraulic cylinder block 10 mainly includes: an oil passage main body 101, an oil passage cover 102 and an oil passage lower cover 103; the outer wall of the oil passage main body 101 and the inner oil cylinder 50
  • the inner wall of the oil circuit is in sealing contact, and enables the oil passage body 101 to move axially relative to the inner oil cylinder 50
  • the oil passage main body 101 is formed with a hydraulic oil chamber penetrating through the oil passage main body 101, and the piston 13 is arranged in the hydraulic oil chamber, and
  • the hydraulic oil chamber is divided into the first hydraulic oil chamber 11 and the second hydraulic oil chamber 12
  • the oil upper cover 102 is sealed on the upper end of the hydraulic oil chamber
  • the oil passage lower cover 103 is sealed on the lower end of the hydraulic oil chamber
  • the piston rod 60 passes through the oil passage
  • the cover 102 is connected to the piston 13 , and the oil discharge line 21 is formed in the oil passage body 101 .
  • FIG. 1 For the hydraulic principle of the hydraulic jack in this embodiment, refer to FIG. 1
  • the first oil port communicates with the reserve oil chamber 30 through the first oil inlet passage 111, and communicates with the load oil chamber 20 through the first oil outlet passage 112, the first oil inlet A first one-way valve 113 is set on the road 111, and a second one-way valve 114 is set on the first oil outlet 112; the second oil port communicates with the reserve oil chamber 30 through the second oil inlet
  • the oil outlet passage 122 communicates with the load oil chamber 20 , the second oil inlet passage 121 is provided with a third one-way valve 123 , and the second oil outlet passage 122 is provided with a fourth one-way valve 124 .
  • the first oil inlet passage 111 is formed on the oil upper cover 102
  • the first oil outlet passage 112 and the second oil inlet passage 121 are both formed on the oil passage main body 101
  • the second oil outlet passage 122 is formed on the oil passage lower cover 103 .
  • a first sinker 1011 is formed on the upper end of the oil passage body 101
  • a second sinker 1012 is formed on the lower end of the oil passage main body 101
  • at least part of the structure of the oil passage cover 102 is set In the first sinker 1011
  • at least part of the structure of the oil passage lower cover 103 is arranged in the second sinker 1012
  • the entrance of the first oil outlet 112 is located in the first sinker 1011
  • the outlet of the second oil inlet 121 Located in the second sinker 1012.
  • a certain gap can be formed between the top of the oil passage lower cover 103 and the bottom of the second sinker 1012, so that the hydraulic oil at the outlet of the second oil inlet passage 121 can quickly flow into the second hydraulic pressure.
  • a runner groove can be provided on the top of the oil passage lower cover 103; similarly, a certain clearance can also be provided between the bottom of the oil passage cover 102 and the bottom of the first sinker 1011 , so that the hydraulic oil in the first hydraulic oil chamber 11 enters the entrance of the first oil outlet passage 112, if no clearance is provided, a flow passage groove can also be provided at the bottom of the oil passage cover 102.
  • an oil discharge rod 70 is arranged in the inner oil cylinder 50, one end of the oil discharge rod 70 is arranged on the oil discharge pipeline 21, and the other end passes through the oil cylinder cover 42, and is connected to the oil discharge pipe.
  • the handle 71 and the oil discharge handle 71 are hinged to the oil tank cover 42 , and can control the connection and closure of the oil discharge pipeline 21 through the oil discharge rod 70 .
  • a return spring (not shown) may be provided on the oil unloading lever 70.
  • a first overload protection oil circuit 115 is connected between the first hydraulic oil chamber 11 and the reserve oil chamber 30
  • a second overload protection oil circuit is connected between the second hydraulic oil chamber 12 and the reserve oil chamber 30 125.
  • the first overload protection oil circuit 115 is opened to release pressure to the reserve oil chamber 30 to avoid damage to the hydraulic cylinder block 10.
  • the second overload protection oil circuit 125 is opened to release the pressure to the reserve oil chamber 30 to avoid damage to the hydraulic cylinder block 10 .
  • a first pressure one-way valve 1151 may be provided on the first overload protection oil circuit 115
  • a second pressure one-way valve 1251 may be provided on the second overload protection oil circuit 125 . Both the first pressure one-way valve 1151 and the second pressure one-way valve 1251 can only be opened under a preset pressure, and the values of the two preset pressures can be the same or different.
  • the first overload protection oil passage 115 is arranged on the oil cover 102
  • the second overload protection oil passage 125 is arranged on the piston rod 60 .
  • At least part of the piston rod 60 is provided with a hollow structure, and the bottom end of the piston 13 has an opening, so that the hydraulic oil in the second hydraulic oil chamber 12 can flow into the hollow piston rod 60 through the opening, and then flow to the second pressure unidirectional
  • the position of the valve 1251 is such that the outlet of the second pressure check valve 1251 is set to communicate with the reserve oil chamber 30 .
  • the first overload protection oil circuit 115 is provided with a first pressure one-way valve 1151
  • the second overload protection oil circuit 125 is provided with a second pressure one-way valve 1251
  • the first pressure one-way valve 1151 is two It opens when the pressure difference on both sides of the second pressure check valve 1251 is greater than the first preset value, and opens when the pressure difference on both sides of the second pressure check valve 1251 is greater than the second preset value.
  • the opening pressure value of the first pressure one-way valve 1151 and the opening pressure value of the second pressure one-way valve 1251 may be the same or different.
  • a piston cylinder 61 is sheathed on the outside of the piston rod 60 , one end of the piston cylinder 61 is connected to the oil cylinder cover 42 , and the other end is connected to the hydraulic cylinder block 10 .
  • the piston barrel 61 plays a supporting role between the hydraulic cylinder block 10 and the oil barrel cover 42.
  • the upwardly moving hydraulic cylinder block 10 transmits the supporting force to the oil barrel cover 42 through the piston barrel 61.
  • the piston barrel 61 supports the oil barrel cover 42
  • the supporting force of the piston rod 60 on the oil cylinder cover 42 is reduced or has no supporting force.
  • Such setting can reduce the damage to the piston rod 60 and improve the service life of the hydraulic jack.
  • the piston rod 60 includes an upper piston rod 62 and a lower piston rod 63 connected to each other, the upper piston rod 62 is connected to the handle 41 , and the lower piston rod 63 is connected to the piston 13 .
  • the lower piston rod 63 is provided with a hollow structure, and a second pressure check valve 1251 is arranged therein, and one or more through holes can be opened on the piston barrel 61 to connect the hydraulic oil in the piston barrel 61 with the reserve oil chamber. 30 connections.
  • the outer wall of the outer oil cylinder 40 is provided with a bearing assembly 80, the outer wall of the outer oil cylinder 40 has a plurality of fixed positions, the bearing assembly 80 can be fixed at any fixed position, and can Move between any two fixed positions.
  • the fixed position of the carrying assembly 80 can be adjusted first, so that the carrying assembly 80 is fixed at the nearest position from the lifted surface. Then carry out the lifting work, thereby reducing the invalid stroke.
  • each fixed position is provided with a card slot 44
  • the bearing assembly 80 includes: a slider 81, a latch 82, and a top block 83; Move, the slide block 81 is provided with a latch installation groove 811, and one end of the latch 82 is hinged to the latch installation groove 811 by the hinge shaft 84, and the latch 82 has an open state (as shown in Figure 15) and a locked state (as shown in Figure 14 ), and can be switched between the open state and the locked state; in the open state, the slider 81 can move relative to the outer oil cylinder 40; In the slot 44, the slider 81 is fixed relative to the outer oil cylinder 40.
  • the latch 82 rotates into the latch installation groove 811 , and in the unlocked state, one end of the latch 82 rotates out of the latch installation groove 811 .
  • the top block 83 is installed on the slider 81 and can move synchronously with the slider 81 .
  • the top block 83 is detachably connected to the slider 81 .
  • the specific connection method can be plug-in, clamping, mortise and tenon connection, screw connection and so on.
  • the slider 81 is provided with an insertion slot 813, the insertion slot 813 includes a first guide portion 8131 and a limiting portion 8132; the top block 83 has an insertion portion 831, and the insertion portion 831 includes a second guide portion 8311 With the limiting block 8312, the insertion part 831 can be inserted into the insertion slot 813, and the second guiding part 8311 is matched with the first guiding part 8131, and the limiting block 8312 is matched with the limiting part 8132.
  • This plug-in structure enables the slider 81 and the top block 83 to be connected and disassembled quickly, and the stability after the connection is high.
  • the mating surfaces of the first guiding portion 8131 and the second guiding portion 8311 are both curved surfaces.
  • the slider 81 is provided with an elastic pushing assembly 812
  • the latch 82 is provided with a groove 821.
  • the elastic pushing assembly 812 is against the groove 821, as shown in the figure 12 and FIG. 13 , the elastic push assembly 812 rests in the groove 821 to limit the rotation of the latch 82.
  • the restriction of the elastic push assembly 812 to the latch 82 can prevent the latch 82 from rotating arbitrarily and exert a certain external force on the latch 82.
  • the groove 821 can be separated from the restriction of the elastic pushing component 812, so as to switch from the locked state to the opened state.
  • the elastic pushing assembly 812 includes a screw 8121, a spring 8122 and a top bead 8123, the slider 81 is provided with a mounting through hole, the screw 8121, a spring 8122 and a top bead 8123 are arranged in the installation through hole, and the spring 8122 is compressed by the screw 8121 and the top bead Between 8123, a part of the top ball 8123 can leak out from the end of the installation through hole, so as to push against the groove 821.
  • the latch 82 is located in the latch installation groove 811, at this time the position of the slider 81 is fixed; as shown in Figure 15, one end of the latch 82 is turned out from the latch installation groove 811, at this time the slider can be adjusted up and down 81 positions.
  • the top block 83 is detachably connected to the slider 81 .
  • the structure of the top block 83 can have various forms.
  • the lifting surface of the top block 83 is provided with anti-skid stripes, and the lifting surface of the top block 83 can be perpendicular to the lifting direction of the outer oil cylinder 40 (that is, the horizontal setting as shown in Figure 13 ), Can also be set to beveled for special working environments. Therefore, the detachable connection between the top block 83 and the slide block 81 can facilitate the replacement of different types of top blocks 83 .
  • the number of bolts 82 is two, and the slider 81 is provided with two bolt installation grooves 811, and each bolt installation groove 811 is hinged to a bolt 82; Axisymmetric. Such setting can make the connection between the slider 81 and the outer oil cylinder 40 stronger and more stable.
  • the hydraulic jack of the present embodiment also has the function of a manual winch, and the specific usage method is as follows: referring to Fig. 17, the fiber rope 5 is passed through the base attachment 3, the base 52 and the drag attachment 4 (to prevent overturning when stressed), and the fiber rope 5 One end is connected with the fixed object, and the other end is connected with the hydraulic jack base 52; one end of the drag chain 2 is connected with the dragged object 1, and the other end is fixed on the dragging attachment 4 of the hydraulic jack, and the handle 41 is pushed and pulled to realize the dragging of the dragged object 1. Pulling, the hook on the base attachment 3 and the hook on the drag attachment 4 alternately hook the drag chain 2, so that when the hydraulic jack reciprocates, the dragging object 1 will not slide to the initial position, thereby realizing the function of the manual winch.
  • a first feature being "on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the terms “one embodiment,” “some embodiments,” “example,” “specific examples,” or “some examples” mean specific features, structures, materials, or features described in connection with the embodiment or examples. Features are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

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Abstract

一种液压油路系统和液压千斤顶，液压油路系统包括液压缸体（10）、负载油腔（20）、储备油腔（30）以及卸油管路；液压缸体（10）内设置有活塞（13），活塞（13）将液压缸体（10）内部分成第一液压油腔（11）和第二液压油腔（12），第一液压油腔（11）具有第一油口，第二液压油腔（12）具有第二油口；第一油口和第二油口均与负载油腔（20）单向连通；第一油口和第二油口均与储备油腔（30）单向连通；卸油管路（21）连通负载油腔（20）和储备油腔（30）；活塞（13）的往复移动能够改变第一液压油腔（11）和第二液压油腔（12）的容积，以使第一油口和第二油口中的一者向负载油腔（20）输送液压油，同时另一者从储备油腔（30）吸油。这种液压油路系统具有工作效率高的优点。

Description

液压油路系统和液压千斤顶 技术领域
本申请涉及机械设备领域，尤其涉及一种液压油路系统和液压千斤顶。
背景技术
相关技术中的液压千斤顶是由千斤顶内两个区的油液互相转换，带动伸缩杆做往返运动，通过单向阀及截面差，实现千斤顶的功能。一般液压千斤顶，只通过单活塞下压，实现重物的提升，但是由于该结构的限制，活塞只有下压重物才有提升行程，活塞上抬无提升行程。同时现千斤顶支撑块固定，若重物离支撑块太远，将导致千斤顶未支撑到重物或者提升行程大部分浪费在空行程上面。
因此现有的液压千斤顶在结构和液压油路系统上均存在技术缺陷。
申请内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本申请的实施例提出一种液压千斤顶的液压油路系统，包括：
液压缸体，所述液压缸体内设置有活塞，所述活塞将所述液压缸体内部分成第一液压油腔和第二液压油腔，所述第一液压油腔具有第一油口，所述第二液压油腔具有第二油口；
负载油腔，所述第一油口和所述第二油口均与所述负载油腔单向连通，并使所述第一油口和所述第二油口均能够向所述负载油腔单向流通；
储备油腔，所述第一油口和所述第二油口均与所述储备油腔单向连通，并使所述储备油腔能够分别向所述第一油口和所述第二油口单向流通；
卸油管路，所述卸油管路连通所述负载油腔和所述储备油腔；
所述液压缸体为双作用液压缸体，所述活塞的往复移动能够改变所述第一液压油腔和所述第二液压油腔的容积，以使所述第一油口和所述第二油口中的一者向所述负载油腔输送液压油，同时另一者从所述储备油腔吸油。
该液压油路系统具有工作效率高的优点。
在本申请的一个实施例中，所述第一油口通过第一进油路与所述储备油腔连通，并通过第一出油路与所述负载油腔连通，所述第一进油路上设置有第一单向阀，所述第一出油 路上设置有第二单向阀；
所述第二油口通过第二进油路与所述储备油腔连通，并通过第二出油路与所述负载油腔连通，所述第二进油路上设置有第三单向阀，所述第二出油路上设置有第四单向阀。
在本申请的一个实施例中，所述第一液压油腔与所述储备油腔之间连接有第一过载保护油路，
所述第二液压油腔与所述储备油腔之间连接有第二过载保护油路。
本申请的实施例还提出一种液压千斤顶，包括：
外油筒，所述外油筒上设置有手柄；
内油筒，外油筒套设于所述内油筒外，并能够相对所述内油筒移动，所述外油筒和所述内油筒限定出储备油腔；
液压缸体，所述液压缸体设置于所述内油筒内，并能够沿所述内油筒的轴向密封移动，所述液压缸体的两端分别为负载油腔和所述储备油腔；所述液压缸体内设置有活塞，所述活塞将所述液压缸体内部分成第一液压油腔和第二液压油腔，所述第一液压油腔具有第一油口，所述第二液压油腔具有第二油口；所述第一油口和所述第二油口均与所述负载油腔单向连通，并使所述第一油口和所述第二油口均能够向所述负载油腔单向流通；所述第一油口和所述第二油口均与所述储备油腔单向连通，并使所述储备油腔能够分别向所述第一油口和所述第二油口单向流通；所述液压缸体具有卸油管路，所述卸油管路连通所述负载油腔和所述储备油腔；
活塞杆，所述活塞杆的一端与所述活塞连接，另一端与所述手柄连接，以使所述手柄能够通过所述活塞杆带动所述活塞往复移动，以改变所述第一液压油腔和所述第二液压油腔的容积，从而使所述第一油口和所述第二油口中的一者向所述负载油腔输送液压油，同时另一者从所述储备油腔吸油。
该液压千斤顶具有工作效率高的优点。
在本申请的一个实施例中，所述外油筒设置有油筒盖，所述油筒盖密封设置于所述外油筒的顶部，所述手柄铰接于所述油筒盖，所述活塞杆穿过所述油筒盖与所述手柄铰接。
在本申请的一个实施例中，所述外油筒设置有套筒，所述套筒固定连接于所述外油筒的底部，所述套筒套设于所述内油筒外，并能够沿所述内油筒的外壁密封滑动。
在本申请的一个实施例中，所述套筒的内壁的至少部分区域设置有轴套，所述轴套与所述套筒同轴设置，并相对所述套筒固定，所述套筒套在所述内油筒的外壁，并能够相对所述内油筒的轴向移动。
在本申请的一个实施例中，所述内油筒的底部设置有底座密封体，所述底座密封体密封所述内油筒的底部；
所述内油筒的顶部位于所述油筒盖的下方，并在所述外油筒的内腔敞开。
在本申请的一个实施例中，所述底座密封体连接底座，所述内油筒的外壁设置有限位部件，所述限位部件用于限定所述外油筒的移动范围，所述限位部件位于所述内油筒的中部偏上的位置。
在本申请的一个实施例中，所述液压缸体包括：油路主体、油路上盖以及油路下盖；
所述油路主体的外壁与所述内油筒的内壁密封接触，并使所述油路主体能够相对所述内油筒的轴向移动；
所述油路主体内形成有贯穿所述油路主体的液压油腔，所述活塞设置于所述液压油腔内，并将所述液压油腔分成所述第一液压油腔和所述第二液压油腔；
所述卸油管路形成于所述油路主体；
所述油路上盖密封于所述液压油腔的上端，所述油路下盖密封于所述液压油腔的下端，所述活塞杆穿过所述油路上盖与所述活塞连接。
在本申请的一个实施例中，所述第一油口通过第一进油路与所述储备油腔连通，并通过第一出油路与所述负载油腔连通，所述第一进油路上设置有第一单向阀，所述第一出油路上设置有第二单向阀；
所述第二油口通过第二进油路与所述储备油腔连通，并通过第二出油路与所述负载油腔连通，所述第二进油路上设置有第三单向阀，所述第二出油路上设置有第四单向阀。
在本申请的一个实施例中，所述第一进油路形成于所述油路上盖，所述第一出油路和所述第二进油路均形成于所述油路主体，所述第二出油路形成于所述油路下盖。
在本申请的一个实施例中，所述油路主体的上端形成有第一沉槽，所述油路主体的下端形成有第二沉槽，所述油路上盖的至少部分结构设置于所述第一沉槽内，所述油路下盖的至少部分结构设置于所述第二沉槽内；
所述第一出油路的入口位于所述第一沉槽内，所述第二进油路的出口位于所述第二沉槽内。
在本申请的一个实施例中，所述内油筒内设置有卸油杆，所述卸油杆的一端设置于所述卸油管路，另一端穿过所述油筒盖，并连接卸油手柄，所述卸油手柄铰接于所述油筒盖，并能够通过所述卸油杆控制所述卸油管路的连通和关闭。
在本申请的一个实施例中，所述第一液压油腔与所述储备油腔之间连接有第一过载保护油路，
所述第二液压油腔与所述储备油腔之间连接有第二过载保护油路。
在本申请的一个实施例中，所述液压缸体包括：油路主体、油路上盖以及油路下盖；
所述油路主体的外壁与所述内油筒的内壁密封接触，并使所述油路主体能够相对所述 内油筒的轴向移动；
所述油路主体内形成有贯穿所述油路主体的液压油腔，所述活塞设置于所述液压油腔内，并将所述液压油腔分成所述第一液压油腔和所述第二液压油腔；
所述油路上盖密封于所述液压油腔的上端，所述油路下盖密封于所述液压油腔的下端；
所述第一过载保护油路设置于所述油路上盖，所述第二过载保护油路设置于所述活塞杆。
在本申请的一个实施例中，所述第一过载保护油路上设置有第一压力单向阀，所述第二过载保护油路上设置有第二压力单向阀，所述第一压力单向阀两侧的压力差大于第一预设值时打开，所述第二压力单向阀两侧的压力差大于第二预设值时打开。
在本申请的一个实施例中，所述活塞杆的外侧套设有活塞筒，所述活塞筒的一端连接所述油筒盖，另一端连接所述液压缸体。
在本申请的一个实施例中，所述活塞杆包括相互连接的上活塞杆和下活塞杆，所述上活塞杆连接所述手柄，所述下活塞杆连接所述活塞。
在本申请的一个实施例中，所述外油筒的外壁设置有承载组件，所述外油筒的外壁具有多个固定位置，所述承载组件能够固定于任一所述固定位置，并能够在任意两个固定位置之间移动。
在本申请的一个实施例中，每个所述固定位置均开设有卡槽，所述承载组件包括：滑块、插销以及顶块；
所述滑块套设于所述外油筒的外壁，并能够相对所述外油筒移动，所述滑块上开设有插销安装槽，所述插销铰接于所述插销安装槽，所述插销具有打开状态和锁紧状态，并能够在所述打开状态和所述锁紧状态之间切换；
在所述打开状态，所述滑块能够相对所述外油筒移动；
在所述锁紧状态，所述插销的部分结构位于所述插销安装槽内，部分结构位于所述卡槽内，以使所述滑块相对所述外油筒固定；
所述顶块安装于所述滑块，并能够随所述滑块移动。
在本申请的一个实施例中，所述滑块上设置有弹性顶推组件，所述插销上开设有凹槽，所述插销在所述锁紧状态时，所述弹性顶推组件顶于所述凹槽。
在本申请的一个实施例中，所述弹性顶推组件包括螺钉、弹簧以及顶珠，所述滑块上开设有安装通孔，所述螺钉、弹簧以及顶珠设置于所述安装通孔，所述弹簧位于所述螺钉和所述顶珠之间，所述顶珠的一部分能够从所述安装通孔的端部漏出，以顶于所述凹槽。
在本申请的一个实施例中，所述顶块与所述滑块可拆卸式连接。
在本申请的一个实施例中，所述滑块上开设有插接槽，所述插接槽包括第一导向部和 限位部；
所述顶块具有插接部，所述插接部包括第二导向部和限位块，
所述插接部能够插接于所述插接槽，并使所述第二导向部与所述第一导向部配合，所述限位块与所述限位部配合。
附图说明
图1是本申请一实施例中液压油路系统的原理图；
图2是本申请一实施例中液压千斤顶在第一剖切面的剖面示意图；
图3是图2的局部放大示意图A；
图4是本申请一实施例中液压千斤顶在第二剖切面的局部剖视图；
图5是图4的局部放大示意图B；
图6是本申请一实施例中液压缸体与活塞杆等部件装配的俯视图；
图7是图6沿A-A的剖面示意图；
图8是图6沿B-B的剖面示意图；
图9和图10分别是本申请一实施例中油路主体在不同摆放角度的立体示意图；
图11是本申请一实施例中承载组件在外油筒安装的爆炸示意图；
图12和图13是本申请一实施例中承载组件在外油筒安装的剖视图；
图14和图15是本申请一实施例中承载组件在外油筒安装的，其中插销分别位于不同的位置；
图16是本申请一实施例中滑块和顶块的立体结构示意图；
图17是本申请一实施例中液压千斤顶作为手动绞盘使用的示意图。
附图标记：
10-液压缸体；11-第一液压油腔；12-第二液压油腔；13-活塞；
111-第一进油路；112-第一出油路；113-第一单向阀；114-第二单向阀；115-第一过载保护油路；1151-第一压力单向阀；121-第二进油路；122-第二出油路；123-第三单向阀；124-第四单向阀；125-第二过载保护油路；1251-第二压力单向阀；
101-油路主体；102-油路上盖；103-油路下盖；
1011-第一沉槽；1012-第二沉槽；
20-负载油腔；21-卸油管路；
30-储备油腔；
40-外油筒；41-手柄；42-油筒盖；43-套筒；431-轴套；44-卡槽；
50-内油筒；51-底座密封体；52-底座；53-限位部件；
60-活塞杆；61-活塞筒；62-上活塞杆；63-下活塞杆；
70-卸油杆；71-卸油手柄；
80-承载组件；81-滑块；811-插销安装槽；812-弹性顶推组件；8121-螺钉；8122-弹簧；8123-顶珠；82-插销；821-凹槽；83-顶块。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元夹具必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
参阅图1，本实施方式提供一种液压千斤顶的液压油路系统，该液压千斤顶可用于抬升重物或者牵引重物，具体根据使用的目的和方法而定。液压油路系统主要包括：液压缸体10、负载油腔20、储备油腔30以及卸油管路21；
其中，液压缸体10内设置有活塞13，活塞13将液压缸体10内部分成第一液压油腔11和第二液压油腔12，第一液压油腔11具有第一油口，第二液压油腔12具有第二油口；第一油口和第二油口均与负载油腔20单向连通，并使第一油口和第二油口均能够向负载油腔20单向流通；第一油口和第二油口均与储备油腔30单向连通，并使储备油腔30能够分别向第一油口和第二油口单向流通；液压缸体10为双作用液压缸体，也就是说第一液压油腔11和第二液压油腔12均为工作腔，从而活塞13的往复移动能够改变第一液压油腔11和第二液压油腔12的容积，以使第一油口和第二油口中的一者向负载油腔20输送液压油，同时另一者从储备油腔30吸油。具体地，如图1所示，当手柄41向下压时，第二液压油腔12被压缩，液压油通过第四单向阀124压入负载油腔20，使负载油腔20液面抬升，在这个过程的同时，第一液压油腔11的容积增大，从而通过第一单向阀113从储备油腔30中吸入液压油；当手柄41向上抬时，第一液压油腔11被压缩，从而第一液压油腔11内的液压油通过第二单向阀114压入负载油腔20，使负载油腔20液面抬升，在这个过程的同时，第二液压油腔12的容积增大，从而通过第三单向阀123从储备油腔30中吸入液压油；由于将液压缸体10设计为双作用液压缸体，并结合油路单向流动的控制，使得手柄41无论是下压还是上提，就能实现负载油腔20液面的提升，从而提高了工作效率。在本实施例 中，用于支撑重物的承载组件80可以设置在储备油腔30外部，并相对储备油腔30固定设置。承载组件80可以不单独设置，可以直接使用储备油腔30的外部结构实现支撑重物的作用。
上述实施例中也设置了卸油管路21，卸油管路21连通负载油腔20和储备油腔30；当液压油路系统进行抬升或者牵引工作完毕后，可通过卸油管路21将负载油腔20内的液压油流入储备油腔30。卸油管路21上设置有卸油开关211，卸油开关211能够控制卸油管路21的打开和关闭。
在一个实施例中，第一油口通过第一进油路111与储备油腔30连通，并通过第一出油路112与负载油腔20连通，第一进油路111上设置有第一单向阀113，第一出油路112上设置有第二单向阀114；第二油口通过第二进油路121与储备油腔30连通，并通过第二出油路122与负载油腔20连通，第二进油路121上设置有第三单向阀123，第二出油路122上设置有第四单向阀124。由此，实现了第一油口和第二油口与负载油腔20的单向连通，以及第一油口和第二油口与储备油腔30的单向连通。除了该实施例之外，还有其他实施例可以实现第一油口和第二油口与负载油腔20的单向连通，以及第一油口和第二油口与储备油腔30的单向连通。
在一个实施例中，第一液压油腔11与储备油腔30之间连接有第一过载保护油路115，第二液压油腔12与储备油腔30之间连接有第二过载保护油路125。当第一液压油腔11内的压力大于预设值时，第一过载保护油路115打开，向储备油腔30泄压，避免损坏液压缸体10，同理，当第二液压油腔12内的压力大于预设值时，第二过载保护油路125打开，向储备油腔30泄压，避免损坏液压缸体10。具体地，可以在第一过载保护油路115上设置第一压力单向阀1151，在第二过载保护油路125上设置第二压力单向阀1251。第一压力单向阀1151和第二压力单向阀1251均在预设压力下才能打开，两个预设压力的值可以相同，也可以不同。
参阅图2-图5，本实施方式中进一步提供了一种液压千斤顶，该液压千斤顶包括：外油筒40，内油筒50，液压缸体10以及活塞杆60，
其中，外油筒40上设置有手柄41；外油筒40套设于内油筒50外，并能够相对内油筒50移动，外油筒40和内油筒50限定出储备油腔30；储备油腔30可以是在内油筒50内，也可以是在外油筒40与内油筒50之间，也可以是即在内油筒50内又在外油筒40与内油筒50之间。
液压缸体10设置于内油筒50内，并能够沿内油筒50的轴向密封移动，液压缸体10的两端分别为负载油腔20和储备油腔30；液压缸体10内设置有活塞13，活塞13将液压缸体10内部分成第一液压油腔11和第二液压油腔12，第一液压油腔11具有第一油口， 第二液压油腔12具有第二油口；第一油口和第二油口均与负载油腔20单向连通，并使第一油口和第二油口均能够向负载油腔20单向流通；第一油口和第二油口均与储备油腔30单向连通，并使储备油腔30能够分别向第一油口和第二油口单向流通；液压缸体10具有卸油管路21，卸油管路21连通负载油腔20和储备油腔30；
活塞杆60的一端与活塞13连接，另一端与手柄41连接，以使手柄41能够通过活塞杆60带动活塞13往复移动，以改变第一液压油腔11和第二液压油腔12的容积，从而使第一油口和第二油口中的一者向负载油腔20输送液压油，同时另一者从储备油腔30吸油。
在上述实施例中，活塞杆60还起到一定的支撑作用，当负载油腔20内液压油增加时，推动液压缸体10向上移动，支撑力通过活塞杆60传到手柄41，进一步传到外油筒40，使得液压缸体10、外油筒40以及活塞杆60同步相对内油筒50向上移动，实现顶升或者牵引的作用。
在一个实施例中，外油筒40设置有油筒盖42，油筒盖42密封设置于外油筒40的顶部，手柄41铰接于油筒盖42，活塞杆60穿过油筒盖42与手柄41铰接。也就是说，该实施例中外油筒40的顶部是通过油筒盖42密封的，同时油筒盖42还起到安装手柄41的作用。
结合图3和图5，外油筒40设置有套筒43，套筒43固定连接于外油筒40的底部，套筒43套设于内油筒50外，并能够沿内油筒50的外壁密封滑动。套筒43可以在外油筒40的底部起到密封作用，同时起到导向作用，保证外油筒40与内油筒50的同轴度，避免外油筒40在上升的过程中发生歪斜。
进一步，套筒43的内壁的至少部分区域设置有轴套431，轴套431与套筒43同轴设置，并相对套筒43固定，套筒43套在内油筒50的外壁，并能够相对内油筒50的轴向移动。轴套431也起到导向作用，轴套431可以设置多个，如图3所示，套筒43的上下端各设置一个轴套431。
在一个实施例中，内油筒50的底部设置有底座密封体51，底座密封体51密封内油筒50的底部；内油筒50的顶部位于油筒盖42的下方，并在外油筒40的内腔敞开。从而使得内油筒50内腔和外油筒40内腔连通，储备油腔30形成于油筒50内腔和外油筒40内腔。内油筒50的底部也可以不设置底座密封体51，而是将内油筒50的底部直接设计为密封的结构，也就是说内油筒50可以是只有一个上开口的筒。内油筒50在设计为上下两个开口的时候，在内油筒50的底部设置底座密封体51进行密封。
其中，底座密封体51也可以是作为液压千斤顶的支撑基础，可设计一个较大的支撑面。也可以专门设计一个底座52。例如，底座密封体51连接底座52，底座52与底座密封体51可拆卸式连接。也必要的时候可以将底座52拆除使用。
在一个实施例中，参阅图2，内油筒50的外壁设置有限位部件53，限位部件53用于 限定外油筒40的移动范围，限位部件53位于内油筒50的中部偏上的位置，限位部件53相对内油筒50固定。
参阅图3、图5-图8，在一个实施例中，液压缸体10主要包括：油路主体101、油路上盖102以及油路下盖103；油路主体101的外壁与内油筒50的内壁密封接触，并使油路主体101能够相对内油筒50的轴向移动；油路主体101内形成有贯穿油路主体101的液压油腔，活塞13设置于液压油腔内，并将液压油腔分成第一液压油腔11和第二液压油腔12；油路上盖102密封于液压油腔的上端，油路下盖103密封于液压油腔的下端，活塞杆60穿过油路上盖102与活塞13连接，卸油管路21形成于油路主体101。本实施例的液压千斤顶的液压原理可参考图1以及本实施方式中关于液压油路系统的介绍。
在一个实施例中，参阅图7-图8，第一油口通过第一进油路111与储备油腔30连通，并通过第一出油路112与负载油腔20连通，第一进油路111上设置有第一单向阀113，第一出油路112上设置有第二单向阀114；第二油口通过第二进油路121与储备油腔30连通，并通过第二出油路122与负载油腔20连通，第二进油路121上设置有第三单向阀123，第二出油路122上设置有第四单向阀124。
其中，第一进油路111形成于油路上盖102，第一出油路112和第二进油路121均形成于油路主体101，第二出油路122形成于油路下盖103。
在一个实施例中，参阅图9和图10，油路主体101的上端形成有第一沉槽1011，油路主体101的下端形成有第二沉槽1012，油路上盖102的至少部分结构设置于第一沉槽1011内，油路下盖103的至少部分结构设置于第二沉槽1012内；第一出油路112的入口位于第一沉槽1011内，第二进油路121的出口位于第二沉槽1012内。
参阅图7和图8，油路下盖103的顶部和第二沉槽1012的底部之间可以形成一定的间隙，从而使第二进油路121的出口的液压油能够快速地流入第二液压油腔12内，若不设置间隙，则可以在油路下盖103的顶部开设流道槽；同理，油路上盖102的底部和第一沉槽1011的底部之间也可以设置一定的间隙，以便于第一液压油腔11内的液压油进入第一出油路112的入口，若不设置间隙也可以在油路上盖102的底部开设流道槽。
在一个实施例中，参阅2和图8，内油筒50内设置有卸油杆70，卸油杆70的一端设置于卸油管路21，另一端穿过油筒盖42，并连接卸油手柄71，卸油手柄71铰接于油筒盖42，并能够通过卸油杆70控制卸油管路21的连通和关闭。具体地，可以在卸油杆70上设置复位弹簧(图中未示出)，向下压卸油杆70时，卸油管路21的底部打开，从而连通储备油腔30和负载油腔20，实现负载油腔20的卸油泄压，停止压卸油杆70时，卸油杆70在复位弹簧的作用下自动将卸油管路21关闭。
在一个实施例中，第一液压油腔11与储备油腔30之间连接有第一过载保护油路115， 第二液压油腔12与储备油腔30之间连接有第二过载保护油路125。当第一液压油腔11内的压力大于预设值时，第一过载保护油路115打开，向储备油腔30泄压，避免损坏液压缸体10，同理，当第二液压油腔12内的压力大于预设值时，第二过载保护油路125打开，向储备油腔30泄压，避免损坏液压缸体10。具体地，可以在第一过载保护油路115上设置第一压力单向阀1151，在第二过载保护油路125上设置第二压力单向阀1251。第一压力单向阀1151和第二压力单向阀1251均在预设压力下才能打开，两个预设压力的值可以相同，也可以不同。
其中，第一过载保护油路115设置于油路上盖102，第二过载保护油路125设置于活塞杆60。活塞杆60的至少部分区域设置有中空结构，活塞13的底端具有开口，使得第二液压油腔12的液压油能够通过该开口流入中空的活塞杆60内，然后流到第二压力单向阀1251的位置，设置第二压力单向阀1251的出口与储备油腔30连通。
在一个实施例中，第一过载保护油路115上设置有第一压力单向阀1151，第二过载保护油路125上设置有第二压力单向阀1251，第一压力单向阀1151两侧的压力差大于第一预设值时打开，第二压力单向阀1251两侧的压力差大于第二预设值时打开。其中，第一压力单向阀1151的打开压力值和第二压力单向阀1251的打开压力值可以相同，也可以不同。
在一个实施例中，活塞杆60的外侧套设有活塞筒61，活塞筒61的一端连接油筒盖42，另一端连接液压缸体10。活塞筒61在液压缸体10和油筒盖42之间起到支撑作用，向上移动的液压缸体10通过活塞筒61将支撑力传递至油筒盖42，当活塞筒61支撑油筒盖42时，活塞杆60对油筒盖42的支撑力减小或无支撑力。这样设置能够减小对活塞杆60的损坏，提高液压千斤顶的使用寿命。
在一个实施例中，活塞杆60包括相互连接的上活塞杆62和下活塞杆63，上活塞杆62连接手柄41，下活塞杆63连接活塞13。其中，下活塞杆63内设置有中空结构，并在其中设置第二压力单向阀1251，活塞筒61上可以开设一个或多个通孔，以将活塞筒61内的液压油与储备油腔30连通。
在一个实施例中，参阅图11-图15，外油筒40的外壁设置有承载组件80，外油筒40的外壁具有多个固定位置，承载组件80能够固定于任一固定位置，并能够在任意两个固定位置之间移动。当使用液压千斤顶时，若承载组件80的位置距离被抬面较远时候，可以先调节承载组件80的固定位置，使承载组件80固定在距离被抬面距离最近的位置。然后进行抬升工作，从而减小无效行程。
具体地，每个固定位置均开设有卡槽44，承载组件80包括：滑块81、插销82以及顶块83；滑块81套设于外油筒40的外壁，并能够相对外油筒40移动，滑块81上开设有插销安装槽811，插销82的一端通过铰接轴84铰接于插销安装槽811，插销82具有打开状 态(如图15所示)和锁紧状态(如图14所示)，并能够在打开状态和锁紧状态之间切换；在打开状态，滑块81能够相对外油筒40移动；在锁紧状态，插销82的部分结构位于插销安装槽811内，部分结构位于卡槽44内，以使滑块81相对外油筒40固定。
在一个实施例中，在锁紧状态，插销82转动至插销安装槽811内，在打开状态，插销82的一端从插销安装槽811转出。
其中，顶块83安装于滑块81，并能够随滑块81同步移动。顶块83与滑块81可拆卸式连接。具体连接方式可以是插接，卡接、卯榫连接、螺纹连接等。
参阅图16，滑块81上开设有插接槽813，插接槽813包括第一导向部8131和限位部8132；顶块83具有插接部831，插接部831包括第二导向部8311和限位块8312，插接部831能够插接于插接槽813，并使第二导向部8311与第一导向部8131配合，限位块8312与限位部8132配合。这种插接结构使得滑块81和顶块83能够快速的连接和快速地拆卸，而且，连接后的稳定性较高。其中，第一导向部8131和第二导向部8311的配合面均为曲面。
在一个实施例中，滑块81上设置有弹性顶推组件812，插销82上开设有凹槽821，插销82在所述锁紧状态时，弹性顶推组件812顶于凹槽821，如图12和图13所示，弹性顶推组件812顶于凹槽821内，以限制插销82转动，弹性顶推组件812对插销82的限制能够避免插销82任意转动，对插销82施加一定的外力，能够使凹槽821脱离弹性顶推组件812的限制，从而由锁紧状态转换至打开状态。
进一步，弹性顶推组件812包括螺钉8121、弹簧8122以及顶珠8123，滑块81上开设有安装通孔，螺钉8121、弹簧8122以及顶珠8123设置于安装通孔，弹簧8122被压缩于螺钉8121和顶珠8123之间，顶珠8123的一部分能够从安装通孔的端部漏出，以顶于凹槽821。如图14所示，插销82位于插销安装槽811内，这时候滑块81的位置固定；如图15所示，插销82的一端从插销安装槽811内转出，这时候可以上下调节滑块81的位置。
如图13所示，顶块83与滑块81可拆卸式连接。顶块83的结构可以有多种形式，顶块83的抬升面设置有防滑条纹，顶块83的抬升面可以垂直于外油筒40的抬升方向(即如图13所示的水平设置)，也可以设置为斜面，以使用特殊的工作环境。因此将顶块83与滑块81设置为可拆卸式连接能够便于更换不同类型的顶块83。
在一个实施例中，插销82的数量为两个，滑块81上开设有两个插销安装槽811，每个插销安装槽811均铰接一插销82；两个插销82关于外油筒40的中心轴对称。如此设置，能够使得滑块81与外油筒40连接的更牢固，更稳定。
本实施方式的液压千斤顶还具有手动绞盘功能，具体使用方式如下：参阅图17，将纤维绳5穿过底座附件3、底座52及拖拽附件4(防止受力时翻转)，纤维绳5的一端与固定 物相连，另一端与液压千斤顶底座52相连；将拖链2一头与拖拽物1相连，一头固定在液压千斤顶的拖拽附件4上，推拉手柄41，实现拖拽物1的拽拉，通过底座附件3上的挂钩和拖拽附件4上的挂钩轮换勾住拖链2，使液压千斤顶在往复运动时，拖拽物1不会向初始位置滑动，从而实现手动绞盘的功能。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本申请中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (25)

  1. 一种液压千斤顶的液压油路系统，其特征在于，包括：
    液压缸体(10)，所述液压缸体(10)内设置有活塞(13)，所述活塞(13)将所述液压缸体(10)内部分成第一液压油腔(11)和第二液压油腔(12)，所述第一液压油腔(11)具有第一油口，所述第二液压油腔(12)具有第二油口；
    负载油腔(20)，所述第一油口和所述第二油口均与所述负载油腔(20)单向连通，并使所述第一油口和所述第二油口均能够向所述负载油腔(20)单向流通；
    储备油腔(30)，所述第一油口和所述第二油口均与所述储备油腔(30)单向连通，并使所述储备油腔(30)能够分别向所述第一油口和所述第二油口单向流通；
    卸油管路(21)，所述卸油管路(21)连通所述负载油腔(20)和所述储备油腔(30)；
    所述液压缸体(10)为双作用液压缸体，所述活塞(13)的往复移动能够改变所述第一液压油腔(11)和所述第二液压油腔(12)的容积，以使所述第一油口和所述第二油口中的一者向所述负载油腔(20)输送液压油，同时另一者从所述储备油腔(30)吸油。
  2. 根据权利要求1所述的液压油路系统，其特征在于，所述第一油口通过第一进油路(111)与所述储备油腔(30)连通，并通过第一出油路(112)与所述负载油腔(20)连通，所述第一进油路(111)上设置有第一单向阀(113)，所述第一出油路(112)上设置有第二单向阀(114)；
    所述第二油口通过第二进油路(121)与所述储备油腔(30)连通，并通过第二出油路(122)与所述负载油腔(20)连通，所述第二进油路(121)上设置有第三单向阀(123)，所述第二出油路(122)上设置有第四单向阀(124)。
  3. 根据权利要求1所述的液压油路系统，其特征在于，所述第一液压油腔(11)与所述储备油腔(30)之间连接有第一过载保护油路(115)，
    所述第二液压油腔(12)与所述储备油腔(30)之间连接有第二过载保护油路(125)。
  4. 一种液压千斤顶，其特征在于，包括：
    外油筒(40)，所述外油筒(40)上设置有手柄(41)；
    内油筒(50)，外油筒(40)套设于所述内油筒(50)外，并能够相对所述内油筒(50)移动，所述外油筒(40)和所述内油筒(50)限定出储备油腔(30)；
    液压缸体(10)，所述液压缸体(10)设置于所述内油筒(50)内，并能够沿所述内油筒(50)的轴向密封移动，所述液压缸体(10)的两端分别为负载油腔(20)和所述储备油腔(30)；所述液压缸体(10)内设置有活塞(13)，所述活塞(13)将所述液压缸体(10)内部分成第一液压油腔(11)和第二液压油腔(12)，所述第一液压油腔(11)具有第一油 口，所述第二液压油腔(12)具有第二油口；所述第一油口和所述第二油口均与所述负载油腔(20)单向连通，并使所述第一油口和所述第二油口均能够向所述负载油腔(20)单向流通；所述第一油口和所述第二油口均与所述储备油腔(30)单向连通，并使所述储备油腔(30)能够分别向所述第一油口和所述第二油口单向流通；所述液压缸体(10)具有卸油管路(21)，所述卸油管路(21)连通所述负载油腔(20)和所述储备油腔(30)；
    活塞杆(60)，所述活塞杆(60)的一端与所述活塞(13)连接，另一端与所述手柄(41)连接，以使所述手柄(41)能够通过所述活塞杆(60)带动所述活塞(13)往复移动，以改变所述第一液压油腔(11)和所述第二液压油腔(12)的容积，从而使所述第一油口和所述第二油口中的一者向所述负载油腔(20)输送液压油，同时另一者从所述储备油腔(30)吸油。
  5. 根据权利要求4所述的液压千斤顶，其特征在于，所述外油筒(40)设置有油筒盖(42)，所述油筒盖(42)密封设置于所述外油筒(40)的顶部，所述手柄(41)铰接于所述油筒盖(42)，所述活塞杆(60)穿过所述油筒盖(42)与所述手柄(41)铰接。
  6. 根据权利要求5所述的液压千斤顶，其特征在于，所述外油筒(40)设置有套筒(43)，所述套筒(43)固定连接于所述外油筒(40)的底部，所述套筒(43)套设于所述内油筒(50)外，并能够沿所述内油筒(50)的外壁密封滑动。
  7. 根据权利要求6所述的液压千斤顶，其特征在于，所述套筒(43)的内壁的至少部分区域设置有轴套(431)，所述轴套(431)与所述套筒(43)同轴设置，并相对所述套筒(43)固定，所述套筒(43)套在所述内油筒(50)的外壁，并能够相对所述内油筒(50)的轴向移动。
  8. 根据权利要求5所述的液压千斤顶，其特征在于，所述内油筒(50)的底部设置有底座密封体(51)，所述底座密封体(51)密封所述内油筒(50)的底部；
    所述内油筒(50)的顶部位于所述油筒盖(42)的下方，并在所述外油筒(40)的内腔敞开。
  9. 根据权利要求8所述的液压千斤顶，其特征在于，所述底座密封体(51)连接底座(52)，所述内油筒(50)的外壁设置有限位部件(53)，所述限位部件(53)用于限定所述外油筒(40)的移动范围，所述限位部件(53)位于所述内油筒(50)的中部偏上的位置。
  10. 根据权利要求4所述的液压千斤顶，其特征在于，所述液压缸体(10)包括：油路主体(101)、油路上盖(102)以及油路下盖(103)；
    所述油路主体(101)的外壁与所述内油筒(50)的内壁密封接触，并使所述油路主体(101)能够相对所述内油筒(50)的轴向移动；
    所述油路主体(101)内形成有贯穿所述油路主体(101)的液压油腔，所述活塞(13)设置于所述液压油腔内，并将所述液压油腔分成所述第一液压油腔(11)和所述第二液压油腔(12)；
    所述卸油管路(21)形成于所述油路主体(101)；
    所述油路上盖(102)密封于所述液压油腔的上端，所述油路下盖(103)密封于所述液压油腔的下端，所述活塞杆(60)穿过所述油路上盖(102)与所述活塞(13)连接。
  11. 根据权利要求10所述的液压千斤顶，其特征在于，所述第一油口通过第一进油路(111)与所述储备油腔(30)连通，并通过第一出油路(112)与所述负载油腔(20)连通，所述第一进油路(111)上设置有第一单向阀(113)，所述第一出油路(112)上设置有第二单向阀(114)；
    所述第二油口通过第二进油路(121)与所述储备油腔(30)连通，并通过第二出油路(122)与所述负载油腔(20)连通，所述第二进油路(121)上设置有第三单向阀(123)，所述第二出油路(122)上设置有第四单向阀(124)。
  12. 根据权利要求11所述的液压千斤顶，其特征在于，所述第一进油路(111)形成于所述油路上盖(102)，所述第一出油路(112)和所述第二进油路(121)均形成于所述油路主体(101)，所述第二出油路(122)形成于所述油路下盖(103)。
  13. 根据权利要求12所述的液压千斤顶，其特征在于，所述油路主体(101)的上端形成有第一沉槽(1011)，所述油路主体(101)的下端形成有第二沉槽(1012)，所述油路上盖(102)的至少部分结构设置于所述第一沉槽(1011)内，所述油路下盖(103)的至少部分结构设置于所述第二沉槽(1012)内；
    所述第一出油路(112)的入口位于所述第一沉槽(1011)内，所述第二进油路(121)的出口位于所述第二沉槽(1012)内。
  14. 根据权利要求5所述的液压千斤顶，其特征在于，所述内油筒(50)内设置有卸油杆(70)，所述卸油杆(70)的一端设置于所述卸油管路(21)，另一端穿过所述油筒盖(42)，并连接卸油手柄(71)，所述卸油手柄(71)铰接于所述油筒盖(42)，并能够通过所述卸油杆(70)控制所述卸油管路(21)的连通和关闭。
  15. 根据权利要求4所述的液压千斤顶，其特征在于，所述第一液压油腔(11)与所述储备油腔(30)之间连接有第一过载保护油路(115)，
    所述第二液压油腔(12)与所述储备油腔(30)之间连接有第二过载保护油路(125)。
  16. 根据权利要求15所述的液压千斤顶，其特征在于，所述液压缸体(10)包括：油路主体(101)、油路上盖(102)以及油路下盖(103)；
    所述油路主体(101)的外壁与所述内油筒(50)的内壁密封接触，并使所述油路主体 (101)能够相对所述内油筒(50)的轴向移动；
    所述油路主体(101)内形成有贯穿所述油路主体(101)的液压油腔，所述活塞(13)设置于所述液压油腔内，并将所述液压油腔分成所述第一液压油腔(11)和所述第二液压油腔(12)；
    所述油路上盖(102)密封于所述液压油腔的上端，所述油路下盖(103)密封于所述液压油腔的下端；
    所述第一过载保护油路(115)设置于所述油路上盖(102)，所述第二过载保护油路(125)设置于所述活塞杆(60)。
  17. 根据权利要求16所述的液压千斤顶，其特征在于，所述第一过载保护油路(115)上设置有第一压力单向阀(1151)，所述第二过载保护油路(125)上设置有第二压力单向阀(1251)，所述第一压力单向阀(1151)两侧的压力差大于第一预设值时打开，所述第二压力单向阀(1251)两侧的压力差大于第二预设值时打开。
  18. 根据权利要求5所述的液压千斤顶，其特征在于，所述活塞杆(60)的外侧套设有活塞筒(61)，所述活塞筒(61)的一端连接所述油筒盖(42)，另一端连接所述液压缸体(10)。
  19. 根据权利要求4所述的液压千斤顶，其特征在于，所述活塞杆(60)包括相互连接的上活塞杆(62)和下活塞杆(63)，所述上活塞杆(62)连接所述手柄(41)，所述下活塞杆(63)连接所述活塞(13)。
  20. 根据权利要求4所述的液压千斤顶，其特征在于，所述外油筒(40)的外壁设置有承载组件(80)，所述外油筒(40)的外壁具有多个固定位置，所述承载组件(80)能够固定于任一所述固定位置，并能够在任意两个固定位置之间移动。
  21. 根据权利要求20所述的液压千斤顶，其特征在于，每个所述固定位置均开设有卡槽(44)，所述承载组件(80)包括：滑块(81)、插销(82)以及顶块(83)；
    所述滑块(81)套设于所述外油筒(40)的外壁，并能够相对所述外油筒(40)移动，所述滑块(81)上开设有插销安装槽(811)，所述插销(82)铰接于所述插销安装槽(811)，所述插销(82)具有打开状态和锁紧状态，并能够在所述打开状态和所述锁紧状态之间切换；
    在所述打开状态，所述滑块(81)能够相对所述外油筒(40)移动；
    在所述锁紧状态，所述插销(82)的部分结构位于所述插销安装槽(811)内，部分结构位于所述卡槽(44)内，以使所述滑块(81)相对所述外油筒(40)固定；
    所述顶块(83)安装于所述滑块(81)，并能够随所述滑块(81)移动。
  22. 根据权利要求21所述的液压千斤顶，其特征在于，所述滑块(81)上设置有弹性 顶推组件(812)，所述插销(82)上开设有凹槽(821)，所述插销(82)在所述锁紧状态时，所述弹性顶推组件(812)顶于所述凹槽(821)。
  23. 根据权利要求22所述的液压千斤顶，其特征在于，所述弹性顶推组件(812)包括螺钉(8121)、弹簧(8122)以及顶珠(8123)，所述滑块(81)上开设有安装通孔，所述螺钉(8121)、弹簧(8122)以及顶珠(8123)设置于所述安装通孔，所述弹簧(8122)被压缩于所述螺钉(8121)和所述顶珠(8123)之间，所述顶珠(8123)的一部分能够从所述安装通孔的端部漏出，以顶于所述凹槽(821)。
  24. 根据权利要求21所述的液压千斤顶，其特征在于，所述顶块(83)与所述滑块(81)可拆卸式连接。
  25. 根据权利要求24所述的液压千斤顶，其特征在于，所述滑块(81)上开设有插接槽(813)，所述插接槽(813)包括第一导向部(8131)和限位部(8132)；
    所述顶块(83)具有插接部(831)，所述插接部(831)包括第二导向部(8311)和限位块(8312)；
    所述插接部(831)能够插接于所述插接槽(813)，并使所述第二导向部(8311)与所述第一导向部(8131)配合，所述限位块(8312)与所述限位部(8132)配合。
PCT/CN2021/095858 2021-05-25 2021-05-25 液压油路系统和液压千斤顶 WO2022246656A1 (zh)

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CN112594247A (zh) * 2020-12-24 2021-04-02 广州风神汽车有限公司 一种双向阻尼缓冲油缸

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CN2294340Y (zh) * 1996-05-07 1998-10-14 浙江华楠科技开发有限公司 一种手动输液装置
CN2415016Y (zh) * 2000-03-29 2001-01-17 台山市英利实业有限公司 快速扬升千斤顶
US20090057633A1 (en) * 2007-07-16 2009-03-05 Russ Beck Jack assembly
CN201610876U (zh) * 2010-02-09 2010-10-20 公安部上海消防研究所 一种液压救援工具的液压装置
CN202390148U (zh) * 2011-12-08 2012-08-22 福建华橡自控技术股份有限公司 高压双作用千斤顶液压缸
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