CN113636495A - Oil cylinder structure - Google Patents

Oil cylinder structure Download PDF

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Publication number
CN113636495A
CN113636495A CN202111036038.0A CN202111036038A CN113636495A CN 113636495 A CN113636495 A CN 113636495A CN 202111036038 A CN202111036038 A CN 202111036038A CN 113636495 A CN113636495 A CN 113636495A
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CN
China
Prior art keywords
cylinder
oil
oil cylinder
power
assisted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111036038.0A
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Chinese (zh)
Other versions
CN113636495B (en
Inventor
邴常松
李亮
刘汉利
李贺
刘丽敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sino Italian Taida Yingkou Garage Equipment Co ltd
Original Assignee
Sino Italian Taida Yingkou Garage Equipment Co ltd
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Application filed by Sino Italian Taida Yingkou Garage Equipment Co ltd filed Critical Sino Italian Taida Yingkou Garage Equipment Co ltd
Priority to CN202111036038.0A priority Critical patent/CN113636495B/en
Publication of CN113636495A publication Critical patent/CN113636495A/en
Application granted granted Critical
Publication of CN113636495B publication Critical patent/CN113636495B/en
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Classifications

    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F15B15/1452—Piston sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1471—Guiding means other than in the end cap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

Hydro-cylinder structure belongs to the machine of lifting technical field of motor vehicle, especially relates to a hydro-cylinder structure. The invention provides an oil cylinder structure with a good using effect. The oil cylinder structure comprises a first oil cylinder (12) and a second oil cylinder (13), and is characterized in that the first oil cylinder (12) and the second oil cylinder (13) are connected in series, and the annular area of a rod cavity of the first oil cylinder (12) is equal to the area of a rodless cavity of the second oil cylinder (13); the oil cylinder comprises a piston (12-3), the piston (12-3) is connected with a piston rod (12-2), and the piston rod (12-2) is connected with the power-assisted claws (28) and (28 a); the end face of the piston (12-2) is provided with an oil hole (12-6), the oil hole (12-6) bypasses the outer wall support ring (12-12) of the piston (12-2) and is communicated with an outer circular oil guide groove (12-7) of the piston (12-2), and the circumference of the cylinder barrel (12-1) is provided with a hole (12-8).

Description

Oil cylinder structure
Technical Field
The invention belongs to the technical field of lifting machines of motor vehicles, and particularly relates to an oil cylinder structure.
Background
The lifting machine mainly realizes the parallel synchronous motion of two table tops through the double cylinders of the main oil cylinder and the auxiliary oil cylinder which are connected in series synchronously, and lifts the vehicle to be maintained.
The shearing type lifting machines in the market are various in variety, the demand for the ultrathin large shearing type lifting machine is increased year by year due to the fact that the shearing type lifting machine is suitable for ground surface installation, small in occupied area (short in an approach bridge for getting on a train) and suitable for being used on multiple floors, and requirements for safety and reliability of the shearing type lifting machine are higher and higher. This requires that the product be continuously upgraded.
Disclosure of Invention
The invention aims at the problems and provides the oil cylinder structure with good use effect.
In order to achieve the purpose, the invention adopts the following technical scheme that the oil cylinder structure comprises a first oil cylinder (12) and a second oil cylinder (13), and is characterized in that the first oil cylinder (12) is connected with the second oil cylinder (13) in series, and the annular area of a rod cavity of the first oil cylinder (12) is equal to the area of a rodless cavity of the second oil cylinder (13);
the oil cylinder comprises a piston (12-3), the piston (12-3) is connected with a piston rod (12-2), and the piston rod (12-2) is connected with the power-assisted claws (28) and (28 a); the end face of the piston (12-2) is provided with an oil hole (12-6), the oil hole (12-6) bypasses a support ring (12-12) on the outer wall of the piston (12-2) and is communicated with an annular oil guide groove (12-7) on the outer circle of the piston (12-2), the circumference of the cylinder barrel (12-1) is provided with a hole (12-8), the hole (12-8) is communicated with the oil guide groove (12-7), the end part of the cylinder barrel (12-1) is arranged in the guide sleeve (12-4), and a sealing ring (12-13) is arranged between the inner wall of the guide sleeve (12-4) and the outer wall of the cylinder barrel (12-1) and is arranged in a groove on the inner wall of the guide sleeve (12-4).
As a preferable scheme, the outer wall of the piston (12-3) is provided with an annular groove, the inner part of the annular groove is provided with a Glae ring (12-14), and the outer end of the Glae ring (12-14) is contacted with the inner wall of the cylinder barrel (12-1).
As another preferred scheme, the tail end of the cylinder barrel (12-1) is provided with a through hole, and a joint (12-15) is arranged at the through hole.
As another preferred scheme, the number of the holes (12-8) is six, and the holes are uniformly distributed along the circumferential direction; the hole (12-8) is arranged on the outer side of the sealing ring (12-13), an oil duct (12-9) is arranged between the outer circle of the cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4) at the position of the six small holes (12-8) on the cylinder barrel (12-1), a groove (12-10) is processed on the end face of the inner hole of the guide sleeve (12-4), the groove (12-10) is communicated with the oil duct (12-9), and the groove (12-9) is communicated with an oil hole (12-11) on the guide sleeve (12-4) and an oil duct of the joint (12-5).
As another preferable scheme, the hydraulic lifting jack further comprises a power-assisted anti-overturning component, the power-assisted anti-overturning component comprises a first power-assisted claw (28) and a second power-assisted claw (28a), the first power-assisted claw (28) is arranged at the piston rod end of the first oil cylinder (12), the second power-assisted claw (28a) is arranged at the piston rod end of the second oil cylinder (13), and the power-assisted claws are connected with a support arm (34) in the lifting jack through shafts.
As another preferable scheme, the invention is also provided with a first power-assisted oil cylinder (14) and a second power-assisted oil cylinder (15), the lower end of the power-assisted oil cylinder is connected with the lower end of the inner support arm (34) of the lifting machine in a shaft mode, and the piston rod end at the upper end of the power-assisted oil cylinder is connected with the upper portion of the outer support arm (21) of the lifting machine in a shaft mode.
Secondly, the power assisting claws (28) and (28a) comprise power assisting assemblies (28-1), a middle shaft hole (28-9) of each power assisting assembly (28-1) is connected with a support arm (34) in the lifting machine through a shaft, an upper shaft hole (28-8) of each power assisting assembly (28-1) is connected with a piston rod lug ring of the first oil cylinder (12), and a lower shaft hole (28-10) of each power assisting assembly (28-1) is connected with a power assisting roller (32) through a power assisting roller shaft (28-2), a power assisting spacer bush (28-3), a shaft sleeve (28-5) and a retainer ring (28-6).
In addition, the invention also comprises a travel switch (30), the travel switch (30) is arranged at the inner side of the inner support arm (34), a long hole with adjustable distance is arranged on the mounting plate, and a roller of the travel switch (30) is matched with a cam surface of a positioning plate (29) on the power-assisted assembly (28-1).
The invention has the beneficial effects.
The oil cylinder structure can realize automatic oil supplementing and exhausting when the lifting machine rises to the highest position, can supplement and exhaust oil under the condition of loading, can not damage a sealing piece, prevents the stroke end point of the oil cylinder from generating a pressure peak value, particularly prevents an auxiliary oil cylinder (a second oil cylinder) from generating a pressurization phenomenon easily, and can eliminate the synchronous accumulated error of the oil cylinder to level the lifting machine. When the piston (12-2) of the oil cylinder of the lifter which rises to the highest point also moves to the end of the guide sleeve (12-4), hydraulic oil can be communicated from the rodless cavity to the rod cavity.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
Fig. 1 is a structural view of a cylinder of a lift of the present invention.
Fig. 2 is an enlarged view of a portion C of fig. 1.
Fig. 3 is a structural view of a guide sleeve of an oil cylinder of the lifting machine.
Fig. 4 is a schematic diagram of the hydraulic system of the lift of the present invention.
Fig. 5 is an overall layout of the lift of the present invention.
Fig. 6 is an enlarged view of the portion N of fig. 5.
FIG. 7 is an enlarged view of the portion N of FIG. 5 with the inner arm removed.
Fig. 8 is a view showing the construction of the corner plate of the present invention.
Figure 9 is a cross-sectional view of the corner plate of the present invention.
Figure 10 is an exploded view of the corner plate of the present invention.
FIG. 11 is a diagram of the secondary lift configuration of the present invention.
Fig. 12 is an enlarged view of a portion a of fig. 11.
Fig. 13 is an enlarged view of a portion B of fig. 11.
FIG. 14 is a diagram of the construction of the sideslip and its sandbox of the present invention.
FIG. 15 is a cross sectional view of the side slide and its sandbox structure of the present invention.
Fig. 16 is a partial cross-sectional view taken along line M of baffle (25-13) of fig. 14.
Fig. 17 is a partial sectional view taken along the line N at the baffle (25-13) in fig. 14.
Fig. 18 is a view in the direction of K of fig. 14.
Figure 19 is a side-slipping framework structure of the present invention.
Figure 20 is an exploded view of the side slip creel of the present invention.
FIG. 21 is a view of the structure of the rack safety lock of the present invention.
FIG. 22 is an exploded view of the rack security lock of the present invention.
FIG. 23 is a view of the structure of the locking teeth of the rack safety lock of the present invention.
FIG. 24 is a structural view of a power assist pawl of the present invention.
Fig. 25 is a schematic view of the structure of the relevant part of the lock plate of the present invention.
In the figure, 1 is an oil filter core, 2 is a gear pump, 3 is a plug-in manual pump, 4 is a one-way valve, 5 is a pressure gauge, 6 is a mother table electromagnetic directional valve, 7 is a son table electromagnetic directional valve, 8 is a split overflow valve, 9 is an electromagnetic unloading valve, 10 is a pressure compensation throttle valve, 11 is a motor, 12 is a first oil cylinder (mother table main oil cylinder), 13 is a second oil cylinder (mother table auxiliary oil cylinder), 14 is a first power-assisted oil cylinder (left power-assisted oil cylinder), 15 is a second power-assisted oil cylinder (right power-assisted oil cylinder), 16 is a son table main cylinder, 17 is a son table auxiliary cylinder, 18 is a one-way throttle valve, 19 is an explosion-proof valve, 20 is a base, 21 is an outer support arm, 22 is a lifting table top, 23 is a secondary lifting structure, 24 is a turning angle disc, 25 is a side sliding and sand frame structure, 26 is a P2 table rack, 27 is a P1 table rack, 28 is a P1 table power-assisted claw, 28 is a P2 table power-assisted claw, 29 is a P1 table positioning plate, The device comprises a positioning plate 29a and a transverse plate, wherein the positioning plate is P2, the travel switch 30 is P1, the travel switch 30a is P2, the inclination sensor 31 is P1, the inclination sensor 31a is P2, the assisting roller 32, the backing plate 33, the inner arm 34 and the transverse plate 35.
Detailed Description
As shown in the figure, the oil cylinder structure can be applied to a novel lifting machine, the novel lifting machine comprises a first table top (P1) and a second table top (P2), the first table top (P1) and the second table top (P2) are supported by a cross support arm, the lower end of the cross support arm is arranged on a lifting machine base (20), a main oil cylinder structure and an auxiliary oil cylinder structure and a rack safety lock structure are arranged on the cross support arm support, and the piston rod end of the main oil cylinder structure and the auxiliary oil cylinder structure are connected with a power-assisted anti-overturning part;
the front parts of the first table top (P1) and the second table top (P2) are provided with corner plates, the middle parts of the first table top (P1) and the second table top (P2) are provided with a secondary lifting structure (23), and the rear parts of the first table top (P1) and the second table top (P2) are provided with a side slide and a sand rack structure (25) thereof.
The novel rack safety lock structure of the lifting machine and the power-assisted anti-overturning part ensure the use safety of the lifting machine.
The front parts of the first table top (P1) and the second table top (P2) of the novel lifting machine are provided with the corner plates, so that the lifting machine can be used for four-wheel positioning of a vehicle.
The main and auxiliary oil cylinder structure (namely the oil cylinder structure of the invention) comprises a first oil cylinder (12) and a second oil cylinder (13), the power-assisted anti-overturning part comprises a first power-assisted claw (28) and a second power-assisted claw (28a), the first power-assisted claw (28) is arranged at the piston rod end of the first oil cylinder (12), the second power-assisted claw (28a) is arranged at the piston rod end of the second oil cylinder (13), and the power-assisted claws are connected with an inner support arm (34) of the lifting machine through shafts. The auxiliary and main oil cylinder piston rod ends are added with power-assisted claw structures (28,28a), so that the initial lifting oil pressure can be reduced, the design of the cylinder diameters of the auxiliary and main oil cylinders (12,13) is smaller, and the lifter can be designed to be thinner.
The lifting device is also provided with a first power-assisted oil cylinder (14) and a second power-assisted oil cylinder (15), the lower end of the power-assisted oil cylinder is connected with the lower end of an inner supporting arm (34) of the lifting machine in a shaft mode, and the piston rod end at the upper end of the power-assisted oil cylinder is connected with the upper portion of an outer supporting arm (21) of the lifting machine in a shaft mode.
This application helping hand hydro-cylinder becomes 4 hydro-cylinders structures with master-slave hydro-cylinder, and the diameter of master-slave hydro-cylinder designs can littleer when satisfying lifting thrust like this, and the machine of lifting can design more thinly.
The power-assisted claws (28) and (28a) comprise power-assisted assembly parts (28-1), the middle shaft holes (28-9) of the power-assisted assembly parts (28-1) are connected with a support arm (34) in the lifting machine through shafts, the upper shaft holes (28-8) of the power-assisted assembly parts (28-1) are connected with a piston rod ear ring of the first oil cylinder (12), and the lower shaft holes (28-10) of the power-assisted assembly parts (28-1) are connected with a power-assisted roller (32) through a power-assisted roller shaft (28-2), a power-assisted spacer sleeve (28-3), a shaft sleeve (28-5) and a retainer ring (28-6). A positioning plate (29) is welded on the boosting assembly (28-1) and is used for realizing detection and early warning when the boosting claws (28) and (28a) turn over.
The travel switch (30) is arranged on the inner side of the inner support arm (34), a long hole with adjustable distance is formed in the mounting plate, and a roller of the travel switch (30) is matched with a cam surface of a positioning plate (29) on the power-assisted assembly (28-1). When the power-assisted claw (28) overturns, the cam surface of the positioning plate (29) triggers the roller of the travel switch (30) to send out a signal. The travel switch (30) serves as a power assisting claw overturn detection switch and has a power assisting overturn prevention detection function. The lifting machine is used for preventing the danger that the other table top independently descends when an obstacle exists below the single table top of the lifting machine, and the safe and reliable work of the lifting machine is ensured. The distance between the roller of the travel switch (30) and the cam surface of the positioning plate (29) on the power-assisted assembly (28-1) can be adjusted to ensure that the cam surface of the positioning plate (29) triggers the roller of the travel switch (30) to send out a signal when the power-assisted claw (28) turns over.
The rack safety lock structure comprises a first rack safety lock structure (27) and a second rack safety lock structure (26), the first rack safety lock structure (27) is arranged on the outer side of the first power cylinder (14), and the second rack safety lock structure (26) is arranged on the outer side of the second power cylinder (15). The rack (26,27) safety lock structure is arranged on the outer sides of the power cylinders (14,15), the structure is compact, and the lifter can be designed to be thinner.
The rack safety lock structure comprises a rack closing piece (26-8), an upper shaft hole of the rack closing piece (26-8) is connected with an upper lug of an outer support arm (21) of the lifting machine, a lock box seat closing piece (26-9) is connected with a lower lug of an inner support arm (34) of the lifting machine, the rack closing piece (26-8) is arranged in a lock tooth box closing piece (26-1), the lock tooth box closing piece (26-1) is connected with the lock box seat closing piece (26-9) through a screw (26-10), a lock tooth (26-2) is connected with a tooth box closing piece (26-1) through a lock shaft (26-3), a lock tooth limiting plate (26-12) is installed on the lock tooth (26-2) through a screw (26-15), two ends of a tension spring (26-16) are respectively connected with the lock tooth limiting plate (26-12) and an upper end welding plate of the lock tooth box closing piece (26-1) (a downward reset lock tooth pulling pull is provided for the lock tooth (26-2) Force); the air cylinder (26-5) is installed on the gear box assembly (26-1) through a screw (26-7) and a gasket (26-6), the air cylinder (26-5) is ventilated and then pushes up the lock gear (26-2) to unlock against the pulling force of the tension spring (26-16), the lock switch bracket (26-13) is installed on a lock seat (26-18) welded on the lock gear box assembly (26-1) through a screw (26-15), and the proximity switch (26-14) is fixed on the lock switch bracket (26-13) through a self-contained nut; a screw (26-4) is screwed on a telescopic rod at the upper end of the air cylinder (26-5) (the screw (26-4) is used for adjusting the distance between a rod of the air cylinder (26-5) and the lock tooth (26-2) and ensuring that the lock tooth is fully jacked open by the air cylinder rod), and a retainer ring (26-11) is arranged at the end part of the lock shaft (26-3); the rear lower end of the locking tooth (26-2) is provided with a downward bulge (26-17).
The locking teeth (26-2) in the locking tooth structure are not supported against the side edge of the square hole of the locking tooth box assembly (26-1) during locking, but force is transmitted to the locking shaft (26-3) by the connecting plate which is thickened per se and then transmitted to the lock seat (26-18) welded on the locking tooth box assembly (26-1) by the locking shaft (26-3). This structure is very reliable.
The lifting machine has the synchronous detection function of the safety lock teeth, and the teeth can be locked only when the lock teeth of the two table tops are in the same tooth position and the tooth tongues are in the racks, so that the lifting machine is safer and more reliable to use.
The rack and rack assembly (26-8) is lifted and stretched along with the lifter in the lock gear box assembly (26-1), and the lock gear (26-2) is pushed upwards to unlock by overcoming the tension of the tension spring (26-16) after the air cylinder (26-5) is ventilated.
The corner disc (24) comprises a rotary disc (24-5), the rotary disc (24-5) is arranged on the base (24-3), and a bead disc (24-4) is arranged between the rotary disc (24-5) and the base (24-3).
An annular boss is arranged in the middle of the upper end of the base (24-3), a bead disk (24-4) is sleeved outside the annular boss, a rotary disk (24-5) is arranged at the upper end of the bead disk (24-4), a countersunk screw (24-6) penetrates through the middle of the rotary disk (24-5), the lower end of the countersunk screw (24-6) is screwed into a threaded hole in the middle of the floating sleeve (24-1), and a blocking piece (24-2) is arranged between the upper end face of the floating sleeve (24-1) and the lower end face of the base (24-3). The baffle plate (24-2) is added to reduce the outer diameter of the floating sleeve (24-1) and ensure the rotation range of the floating sleeve in the base (24-3); the rotary table (24-5) can be pressed and formed by a clamping fixture, and is as thin as possible on the premise of meeting the strength.
The automobile wheel lifting platform is characterized in that rubber cushion blocks (24-11) are arranged on two sides of the base (24-3) (the rubber cushion blocks (24-11) are used for filling the height difference between the rotary table (24-5) and the base (24-3) so that a wheel can be more stable when the wheel rotates up and down), arc-shaped grooves corresponding to the rotary table (24-5) are formed in the inner sides of the rubber cushion blocks (24-11), strip-shaped grooves are formed in the lower ends of the outer sides of the rubber cushion blocks (24-11), mounting groove plates (24-15) are arranged in the strip-shaped grooves, mounting holes are formed in the mounting groove plates (24-15), screws (24-7) penetrate through the mounting holes, gaskets (24-8) and are screwed into nuts (24-9) (connected with the lifting platform 22) through the screws (24-7).
Jacks are arranged on two sides of the front end of the rotary table (24-5), the rear end of the fixed pin assembly (24-14) is inserted into the jacks, threaded holes are formed in the front end of the fixed pin assembly (24-14), screws (24-10) penetrate through holes in the rear end of the L-shaped clamping plate (24-12) and are screwed into the threaded holes, the rear end of the plastic-coated steel wire rope penetrates through holes in the front end of the clamping plate (24-12) and is provided with a limiting block, and an annular sheet is arranged at the front end of the plastic-coated steel wire rope (24-13). The plastic-coated steel wire rope and the annular sheet are arranged to prevent the fixed closing parts 24-14 from being lost.
The front end of the base (24-3) is turned upwards, threaded holes are formed in two sides of the turning part, and screws (24-10) are screwed into the threaded holes (used for fixedly connecting the annular sheets at the front ends of the plastic coated steel wire ropes (24-13)).
The rotary table (24-5) slides and rotates on the bead plate (24-4), and the rotary table (24-5) of the corner plate can transversely move in the middle groove of the base (24-3), so that the rotary table is suitable for vehicle types with different wheel tracks. The floating sleeve (24-1) is connected with the rotary table (24-5) through a countersunk head screw (24-6) and slides or rotates along with the rotary table (24-5), and the sliding and rotating range is limited by a middle groove (a groove below the annular boss) of the base (24-3). The base (24-3) is of a sleeve welding structure (namely a hollow round sleeve is welded in the middle of a square plate).
The height of the corner disc (24) is 18mm, and the rotation range of the rotating disc (24-5) of the corner disc is phi 84mm (namely the rotation range can reach any position in a phi 84mm circle).
The secondary lifting structure (23) comprises a sub-table outer support arm assembly (23-20) and a sub-table inner support arm assembly (23-28), the cross sections of support arms in the sub-table outer support arm assembly (23-20) and the sub-table inner support arm assembly (23-28) are rectangular structures, and the sub-table plate assembly (23-29) is arranged at the upper ends of the sub-table outer support arm assembly (23-20) and the sub-table inner support arm assembly (23-28);
the piston rod of the sub-platform main cylinder (16) is connected with the sub-platform inner supporting arm assembly (23-28) through the sub-platform cylinder upper shaft (23-9), and the cylinder head end of the sub-platform main cylinder (16) is connected with the sub-platform outer supporting arm assembly (23-20) through the sub-platform cylinder lower shaft (23-14).
The secondary lifting structure can be independently installed and can be selectively installed on the lifting table board, and the user can select and use the secondary lifting structure more conveniently.
The sub-table outer support arm assembly (23-20) is connected with the fixed seat (23-33) through a shaft head at the lower end, and the fixed seat (23-33) is connected with the main table top through a screw hole at the lower end of the fixed seat by a screw; the whole secondary lifting structure and the main table top can be disassembled and assembled.
The middle part of the sub-platform outer support arm assembly (23-20) is connected with the middle part of the sub-platform inner support arm assembly (23-28) through a shaft hole, a bolt (23-18) and a locking round nut (23-19); the upper end of the sub-table main cylinder (16) is connected with the upper part of the sub-table inner support arm assembly (23-28) through a shaft hole, a shaft sleeve (23-13) and a screw (23-8) (used for positioning a shaft and preventing the shaft from moving), the upper end of the sub-table oil cylinder (23-9) and the shaft sleeve (23-10) are connected with the lower end of the sub-table outer support arm assembly (23-20) through the shaft hole, the shaft sleeve (23-15), the screw (23-17) and the lower shaft (23-14) of the sub-table oil cylinder, and the upper end of the sub-table outer support arm assembly (23-20) is connected with the sub-table upper slide block (23-21) through the shaft hole, the shaft sleeve (23-15), the screw (23-17) and the lower shaft (23-14).
The secondary lifting is to design the cross sections of the support arms in the sub-platform outer support arm assembly (23-20) and the sub-platform inner support arm assembly (23-28) which are lifted in a scissor mode into a rectangular structure, so that the secondary lifting is thinner on the premise of meeting the structural strength.
Drawing grooves with square sections are arranged on two sides of the secondary table platen assembly (23-29), drawing rods matched with the drawing grooves are arranged on two sides of the drawing assembly (23-3), a limiting plate (23-1) is arranged at the front end of the drawing rods, the limiting plate (23-1) is arranged in a limiting sliding groove at the front end of the drawing rods, an upper convex rod is arranged at the upper end of the limiting plate (23-1), a pressure spring (23-2) is sleeved outside the upper convex rod, the upper end of the pressure spring (23-2) is abutted against the upper end face of the limiting sliding groove, the lower end of the limiting sliding groove is open, the lower end of the limiting plate (23-1) is an inclined face, an upper plate is arranged at the rear upper end of the drawing assembly (23-3), and a screw (23-4) penetrates through a hole in the drawing assembly (23-3) and is screwed on the nut piece (23-34), the rear end of the bottom surface of the drawing groove is provided with round holes (23-35) corresponding to the limiting plate (23-1) and the screws (23-4);
the drawing and combining piece (23-3) can be drawn relative to the sub-table platen combining piece (23-29), the pressure spring (23-2) pushes the limiting plate (23-1) to be clamped in a round hole (23-35) formed in the bottom of the square hole end of the side edge of the sub-table platen combining piece (23-29), the inclined surface on the limiting plate (23-1) is inwards to facilitate inward pushing and mounting of the drawing and combining piece (23-3), and when the drawing and combining piece (23-3) is pushed to the platen combining piece (23-29), the lower end nut cap of the screw (23-4) falls into the hole (23-25) of the platen combining piece (23-29). The nut piece (23-34) can be pulled upwards to pull out the screw (23-4) and the nut from the hole (23-25) of the bedplate assembly (23-29).
The sub-table plate assembly (23-29) is provided with a drawing square hole, the drawing assembly (23-3) can be drawn in the drawing square hole, so that a machine can lift vehicles with different wheelbases, a limiting plate (23-1) and a pressure spring (23-2) are arranged in a welding groove at the supporting arm end of the drawing assembly (23-3), when the machine is drawn out, the pressure spring (23-2) pushes the limiting plate (23-1) to be clamped in a round hole (23-35) formed in the bottom of the side square hole end of the sub-table plate assembly (23-29), so that the drawing assembly (23-3) is prevented from being excessively drawn and pulled down, and an inclined surface on the limiting plate (23-1) is inwards convenient for inwards pushing and mounting of the drawing assembly (23-3). The screw (23-4) passes through the hole on the support arm of the drawing component (23-3) and is screwed on the nut piece (23-34), when the drawing component (23-3) is pushed onto the bedplate component (23-29), the lower end nut cap of the screw (23-4) falls into the hole (23-25) of the bedplate component (23-29) to play a role of fixing the drawing component (23-3) and prevent movement, when drawing is needed, the nut piece (23-34) can be lifted upwards, so that the nut of the screw (23-4) can be pulled out from the hole (23-25) of the bedplate component (23-29) and then is pulled outwards.
The secondary lifting structure (23) is provided with a pneumatic unlocking structure, the pneumatic unlocking structure comprises a lock bottom plate (23-22) and lock plates (23-27), mounting holes are formed in the periphery of the lock bottom plate (23-22), the lock plates (23-27) are connected with the lower ends of support arm assemblies (23-28) in the sub-platform through support shafts (23-26), and sliding blocks (23-25) are arranged at two ends of the support shafts (23-26); the thin cylinder (23-30) is arranged on the lock plate (23-27), the lock bottom plate (23-22) is provided with a sliding limit frame (23-40), and the fulcrum shaft (23-26) passes through the sliding limit frame (23-40) and the thin slide blocks (23-23) at two sides of the sliding limit frame (23-40); the upper end of the sub-table inner support arm assembly (23-28) is connected with the rear end of the drawing assembly (23-3) through a shaft hole, a sub-table inner arm upper shaft (23-5), a shaft sleeve (23-6) and a check ring (23-7); the lower end of the thin cylinder (23-30) is provided with a cylinder sleeve (23-12); the end parts of the support shafts (23-26) are provided with retaining rings (23-24), the lower ends of the thin cylinders (23-30) are connected with the locking plates (23-27) through screws (23-31), and the end parts of the telescopic rods of the thin cylinders (23-30) are screwed with screws (23-32); the front ends of the locking plates (23-27) are provided with locking shafts (23-50), and the locking bottom plates (23-22) behind the locking shafts (23-50) are provided with gear blocks (23-51).
Flat-head silencers (23-11) are screwed on the thin cylinders (23-30) (the thin cylinders are outsourcing parts, are pneumatic universal silencing parts and are sintered materials, and air achieves silencing effect through honeycomb gaps in the thin cylinders).
The sliding blocks (23-25) at the two ends of the fulcrum shaft (23-26) slide and lift on the main table board; when the thin cylinder (23-30) is ventilated, the lock plate (23-27) is driven to rotate around the fulcrum shaft (23-26) to unlock (the lock shaft (23-50) at the front end of the lock plate (23-27) is lifted to be higher than the tooth block (23-51) on the lock bottom plate (23-22)). The cylinder sleeve (23-12) is arranged on the piston rod at the lower end of the thin cylinder (23-30) by using a screw, and the cylinder sleeve (23-12) slides on the lock bottom plate (23-22). When the gear locking is needed in the secondary lifting, when the thin cylinder (23-30) exhausts, the front end of the locking plate (23-27) descends, the fulcrum shaft 23-26 drives the locking shaft (23-50) on the locking plate (23-27) to slide forwards (namely, the left side of the figure 11) to the gear block (23-51), and the rear side of the locking shaft (23-50) leans against the front locking gear of the gear block (23-51).
The lock tooth structure of the secondary lifting is thin, the connecting structure of the lock plate (23-27) and the thin cylinder (23-30) is compact, and the lock plate and the main table top are of a detachable structure, so that the secondary lifting is convenient to select and install.
The side-sliding and sand-frame structure comprises a side-sliding bottom plate assembly (25-1), wherein the side-sliding bottom plate assembly (25-1) is fixed on the main table top of the lifting machine through holes at four corners of the side-sliding bottom plate assembly by screws;
the side sliding plate (25-5) is inserted into a hole on the corner of the side sliding bottom plate assembly (25-1) through a fixed pin assembly (25-6) for fixation, and the fixed pin assembly (25-6) is connected with the main table top through a clamping plate (25-7), a screw (25-9) and a plastic-coated steel wire rope. The plastic-coated steel wire rope (25-8) is used for preventing the fixed closing piece (24-14) from being lost, and the fixed closing piece (25-6) is pulled out before four-wheel positioning is carried out when the vehicle is driven to the lifting machine.
The middle part of the side sliding plate (25-5) is provided with a hole, a screw (25-12) penetrates through the hole, a bottom plate assembly (25-1) and a side sliding block (25-11) are screwed on the side sliding pin shaft (25-10), the bottom plate assembly (25-1) is provided with a square frame (25-1-2) with a shoulder, and the side sliding block (25-11) is arranged in the square frame (25-1-2);
the side-slipping pin shaft (25-10) penetrates through a strip-shaped hole in the side-slipping sliding block (25-11), the lower ends of the two sides of the side-slipping sliding block (25-11) extend outwards to form a stop block (25-50), the inner wall of the upper end of the shoulder is provided with a baffle plate (25-13) extending towards the middle part, and the upper end surface of the stop block (25-50) and the lower end surface of the baffle plate are matching surfaces.
The side sliding plate (25-5) slides through two holes in the middle, a screw (25-12) penetrates through the side sliding plate (25-5) and the side sliding bottom plate assembly (25-1), the side sliding block (25-11) is screwed on the side sliding pin shaft (25-10), the side sliding pin shaft (25-10) can slide longitudinally in the side sliding block (25-11) by utilizing a shoulder, and the side sliding block (25-11) can slide transversely in a frame (25-1-2) with the shoulder of the side sliding bottom plate assembly (25-1). This ensures the all-round sliding of the side sliding plate (25-5).
The side-sliding sand rack (25-2) is arranged on the side-sliding bottom plate assembly (25-1), a nylon ball (25-3) placing hole is formed in the side-sliding sand rack (25-2), the side-sliding sand rack (25-2) is arranged between the side sliding plate (25-5) and the side-sliding bottom plate assembly (25-1), an annular groove (25-40) is formed in the side-sliding bottom plate assembly (25-1), and the nylon ball (25-3) is arranged in the annular groove (25-40). The nylon ball (25-3) is used for supporting the sliding action of the side sliding plate (25-5).
The side sliding sand rack (25-2) is used for supporting the sliding action of the side sliding plate (25-5), six ring grooves (25-40) can be welded on the side sliding bottom plate assembly (25-1), and 3 nylon balls (25-3) are placed in each ring groove (25-40) to increase the supporting area of the side sliding plate.
The side-sliding sand racks (25-2) are four and are arranged in the transverse direction, and each side-sliding sand rack (25-2) is fixed on the side-sliding bottom plate assembly (25-1) through 2 screws (25-4).
The side sliding sand rack (25-2) comprises a reversed Y-shaped sliding rack (25-2-1), a plurality of nylon ball placing holes are uniformly distributed in the sliding rack (25-2-1), a pull ring (25-2-2) is arranged in the middle of an opening of the side sliding sand rack (25-2), and the pull ring (25-2-2) is connected with the sliding rack (25-2-1) through a tension spring (25-2-3).
The number of the sliding carriages (25-2-1) is two, the two sliding carriages (25-2-1) are arranged in a buckling mode, each pull ring (25-2-2) is connected with four tension springs (25-2-3), and twenty nylon balls (25-2-5) are arranged; one sliding frame (25-2-1) is provided with a column base (25-2-6), the other sliding frame (25-2-1) is provided with a round hole corresponding to the column base (25-2-6), and the other end of the tension spring (25-2-3) is connected with the sliding frame (25-2-1) through a screw (25-2-4).
20 nylon balls (25-2-5) are placed in the circular grooves through 2 carriages (25-2-1), and a plurality of pylons (25-2-6) on one carriage (25-2-1) are embedded into the circular holes on the other carriage to be buckled; one end of each tension spring (25-2-3) is connected with the hole of the pull ring (25-2-2) and the other end is fixedly connected with a screw (25-2-3) arranged on a square 4-angle hole of the sliding frame (25-2-1). Thus, after the side sliding plate (25-5) slides under the sliding force of the vehicle, the side sliding plate (25-5) can be reset by the pulling force of the tension spring (25-2-3) under the condition that the vehicle is lifted without load.
The travel switch (30) is arranged on the inner support arm (34) through a mounting plate, and a long hole with adjustable distance is arranged on the mounting plate. The long hole can adjust the distance between the roller of the travel switch (30) and the cam surface of the positioning plate (29) on the power-assisted assembly (28-1).
The first oil cylinder (12) is connected with the second oil cylinder (13) in series, and the annular area of a rod cavity of the first oil cylinder (12) is equal to the area of a rodless cavity of the second oil cylinder (13).
The first oil cylinder (12) comprises a piston (12-3), the piston (12-3) is connected with a piston rod (12-2), and the piston rod (12-2) is connected with the power-assisted claws (28) and (28 a); the end face of the piston (12-2) is provided with an oil hole (12-6), the oil hole (12-6) bypasses a support ring (12-12) on the outer wall of the piston (12-2) and is communicated with an annular oil guide groove (12-7) on the outer circle of the piston (12-2), the circumference of the cylinder barrel (12-1) is provided with a hole (12-8), the hole (12-8) is communicated with the oil guide groove (12-7), the end part of the cylinder barrel (12-1) is arranged in the guide sleeve (12-4), and a sealing ring (12-13) is arranged between the inner wall of the guide sleeve (12-4) and the outer wall of the cylinder barrel (12-1) and is arranged in a groove on the inner wall of the guide sleeve (12-4).
According to the oil cylinder structure, automatic oil supplementing and air exhausting can be realized when the lifting machine rises to the highest position, the sealing element cannot be damaged when oil supplementing and air exhausting are carried out under the condition of load, the pressure peak value generated at the stroke end of the oil cylinder is prevented, particularly, the auxiliary oil cylinder (second oil cylinder) is easy to generate a pressurization phenomenon, and the synchronous accumulated error of the oil cylinder can be eliminated to level the lifting machine.
When the piston (12-2) of the oil cylinder of the lifter which rises to the highest point also moves to the end of the guide sleeve (12-4), hydraulic oil can be communicated from the rodless cavity to the rod cavity.
An annular groove is formed in the outer wall of the piston (12-3), a Glare ring (12-14) is arranged in the annular groove, and the outer end of the Glare ring (12-14) is in contact with the inner wall of the cylinder barrel (12-1).
The tail end of the cylinder barrel (12-1) is provided with a through hole, and a joint (12-15) (the joint (12-15) is used for connecting an oil pipe, and both ends of the joint are provided with threads).
Six holes (12-8) are uniformly distributed along the circumferential direction; the hole (12-8) is arranged on the outer side of the sealing ring (12-13), an oil duct (12-9) is arranged between the outer circle of the cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4) at the position of the six small holes (12-8) on the cylinder barrel (12-1), a groove (12-10) is processed on the end face of the inner hole of the guide sleeve (12-4), the groove (12-10) is communicated with the oil duct (12-9), and the groove (12-9) is communicated with an oil hole (12-11) on the guide sleeve (12-4) and an oil duct of the joint (12-5).
The above first cylinder (12) structure is also applicable to the second cylinder (13).
High-pressure oil is supplied to a gear pump (2) in the power unit to push a piston (12-3) of an oil cylinder, and a piston rod (12-2) connected to the piston pushes a power assisting claw (28) and a power assisting claw (28a) to push a support arm (34) of the lifting machine to lift the lifting machine.
The rodless cavity hydraulic oil of the second oil cylinder (13) is provided by the rodless cavity of the first oil cylinder (12).
The annular area of the rod cavity of the first oil cylinder (12) is equal to the area of the rodless cavity of the second oil cylinder (13), so that the two table tops (P1) and (P2) can be synchronously lifted in series. After oil supplementing and air exhausting are finished, the hydraulic oil quantity in the rod cavity of the first oil cylinder (12), the rodless cavity of the second oil cylinder (13) and the connecting oil way is basically unchanged, and synchronous operation of the two table surfaces (P1) and (P2) can be ensured.
The middle part of the inner support arm (34) is provided with an inclination angle sensor (31, 31a), a detection signal output port of the inclination angle sensor (31, 31a) is connected with a detection signal input port of a controller, and a control signal output port of the controller is connected with a control signal input port of the leveling solenoid valve (6 a).
The inclination angle sensor is added, under the coordination of the electromagnetic valve of the hydraulic system, the two table tops can be synchronously detected in real time, oil is automatically supplemented and drained in real time, the leveling is carried out, the synchronous operation of the two table tops is ensured, and the leveling precision is higher.
Although the oil drainage channel at the stroke end of the oil cylinder can be used for leveling the lifter in the scheme, due to the manufacturing precision of the oil cylinder and the frame, micro leakage of hydraulic oil in the full-stroke lifting process from the bottom to a high point after the lifter is used for a period of time and the like, a synchronization error exceeding the precision requirement may occur.
In order to solve the problems, the middle part of an inner support arm (34) of each table top (P1, P2) of the lifter is provided with a tilt angle sensor (31, 31a), the precision is 0.02 degrees, the precision is converted into the lifting stroke precision which is less than 0.5mm, and the use requirement can be met; the height difference of the two platforms (P1, P2) is determined by the angle change of the inclination angle sensors (31, 31a) and the initial lowest level horizontal plane, a signal is provided for a control system of the power unit, and then a leveling solenoid valve (6a) of the power unit is controlled to be opened and closed to perform synchronous leveling on the platforms at any time.
The hydraulic inlets of the leveling electromagnetic valve (6a), the sub-platform electromagnetic directional valves (7) (7a) and the main platform electromagnetic directional valve (6) are respectively connected with a pressure gauge (5), an outlet of a plug-in manual pump (3), an outlet of a tubular plug-in one-way valve (4) and an outlet of a plug-in electromagnetic unloading valve (9), the outlet inlet of the plug-in manual pump (3) is respectively connected with one end of an oil filter core (1), one end of a split overflow valve (8) and one end of a pressure compensation throttle valve (10), the other end of the oil filter core (1) is respectively connected with the inlet of the tubular plug-in one-way valve (4) and the other end of the split overflow valve (8) through a gear pump (2), and the other end of the pressure compensation throttle valve (10) is connected with the inlet of the plug-in electromagnetic unloading valve (9);
a hydraulic outlet of the leveling electromagnetic valve (6a) is connected with an oil inlet of the auxiliary cylinder (13) through an explosion-proof valve (19), a hydraulic outlet of the sub-table electromagnetic directional valve (7) is connected with an oil inlet of the sub-table main cylinder (16) through a one-way throttle valve (18), a hydraulic outlet of the sub-table electromagnetic directional valve (7a) is connected with an oil inlet of the sub-table auxiliary cylinder (17) through the one-way throttle valve (18), an oil outlet of the sub-table main cylinder (16) is connected with a hydraulic outlet of the sub-table electromagnetic directional valve (7a), a hydraulic outlet of the main table electromagnetic directional valve (6) is connected with an oil inlet of the main cylinder (12) through the explosion-proof valve (19), and an oil outlet of the main cylinder (12) is connected with a hydraulic outlet of the leveling electromagnetic valve (6 a); the hydraulic outlet of the master electromagnetic directional valve (6) is respectively connected with the oil inlet of the left power-assisted oil cylinder (14) and the oil inlet of the right power-assisted oil cylinder (15), and the oil outlet of the right power-assisted oil cylinder (15) is respectively connected with the oil outlet of the auxiliary cylinder (13), the oil filter core (1), the oil outlet of the power-assisted oil cylinder (14) and the oil outlet of the sub-platform auxiliary cylinder (17).
When a vehicle is lifted, the motor (11) drives the hydraulic pump (2) to suck hydraulic oil through the filtering oil core (1), the pump outputs high-pressure hydraulic oil to open the one-way valve (4), the high-pressure hydraulic oil enters the rodless cavity of the master cylinder (12) through the opened master electromagnetic directional valve (6) and the explosion-proof valve (19), the hydraulic oil with the rod cavity is conveyed to the rodless cavity of the master auxiliary cylinder (13) through the explosion-proof valve (19) in the piston lifting process of the master cylinder (12), the lifting actions of the two table surfaces can be synchronously performed because the area of the rod cavity of the master cylinder (12) is equal to that of the rodless cavity of the master auxiliary cylinder (13), and the left power cylinder (14) and the right power cylinder (15) also participate in the lifting action through the master electromagnetic directional valve (6).
When the lifting machine descends, the electromagnetic unloading valve (9) and the master electromagnetic directional valve (6) are simultaneously powered on and opened, the lifting machine frames P1 and P2 transmit force to a piston rod of the master main oil cylinder (12) and a piston rod (12-2) of the master auxiliary oil cylinder (13) under the action of self weight of a vehicle and a machine, the piston rod (12-2) pushes the piston (12-3), the master auxiliary oil cylinder (13) returns hydraulic oil to a rod cavity of the master main oil cylinder (12) through the piston (12-3), and the master main oil cylinder (12) returns the hydraulic oil to an oil tank through the master electromagnetic directional valve (6), the electromagnetic unloading valve (9) and the pressure compensation throttle valve (10) through the piston (12-3). At the moment, the left power-assisted oil cylinder (14) and the right power-assisted oil cylinder (15) also participate in descending through the master station electromagnetic directional valve (6).
The ascending and descending processes of the sub-platform main oil cylinder (16) and the sub-platform auxiliary oil cylinder (17) of the secondary lifting device (23) are similar to the process of the main platform, and only the sub-platform electromagnetic directional valve (7) is opened to open an oil path.
The lifting machine consists of two racks P1 and P2, wherein each rack mainly comprises a base (20), an inner supporting arm (34), an outer supporting arm (21), a power-assisted claw (28 or 28a), a rack (26 or 27), a mother platform main oil cylinder (12), a mother platform auxiliary oil cylinder (13), a left power-assisted oil cylinder (14), a right power-assisted oil cylinder (15), a lifting platform surface (22), a secondary lifting (23), a corner disc (24), a side slide (25), a son platform main oil cylinder (16) and a son platform auxiliary oil cylinder (17).
The lifter is used for the first installation, the lifter is lifted to the highest point, an oil drainage channel (the lifter) in a main platform main oil cylinder (12) and a main platform auxiliary oil cylinder (13) is utilized to be lifted to the highest point, 6 small holes (12-8) are designed on the circumference of a cylinder barrel (12-1) to enter an oil duct (12-9) between the excircle of the cylinder barrel (12-1) and the inner circle of a guide sleeve (12-4) through an oil hole (12-7) on an oil hole (12-6) and an outer annular oil guide groove (12-7) on a piston (12-3), the oil duct passes through a groove (12-9) on the guide sleeve (12-4) and an oil hole (12-11) on the guide sleeve (12-4), and is connected to a rodless cavity of the main platform auxiliary oil cylinder (13) through a joint (12-5), the flow process in the main platform auxiliary cylinder (13) is the same as that of the main platform main oil cylinder (12), and finally flows back to an oil tank of the power unit through a series of oil path channels on the piston (12-3), the cylinder barrel (12-1) and the guide sleeve (12-4), the air in the oil path and the oil cylinder is discharged, the two table surfaces (P1) and (P2) are synchronously leveled, the air in the oil path and the oil cylinder is continuously discharged into the oil tank of the power unit under the pushing of hydraulic oil, and the oil supplementing and gas discharging of a hydraulic system and the synchronous leveling operation of the lifting table surface (22) are carried out.
When the lifting machine mother platform and the secondary lifting are at the lowest point, the vehicle runs from the bridge approach at the right end of the lifting machine to the lifting platform surface (22), and the front wheel runs to the corner disc (24).
According to a principle diagram of a hydraulic system of a lifting machine, when a vehicle is lifted, hydraulic oil is sucked into a hydraulic pump (2) through a filter oil core (1), the pump outputs high-pressure hydraulic oil to open a one-way valve (4), the high-pressure hydraulic oil enters a rodless cavity of a master cylinder (12) through an opened master electromagnetic directional valve (6) and an explosion-proof valve (19), the hydraulic oil with a rod cavity is conveyed to the rodless cavity of a master auxiliary cylinder (13) through the explosion-proof valve (19) in the process of lifting a piston of the master cylinder (12), and the lifting actions of the two table surfaces can be synchronously performed because the area of the rod cavity of the master cylinder (12) is equal to the area of the rodless cavity of the master auxiliary cylinder (13).
A piston rod of a master station main oil cylinder (12) and a piston rod of a master station auxiliary oil cylinder (13) respectively push a power-assisted claw (28) and a power-assisted claw (28a) to carry out an initial power-assisted lifting process, at the moment, a left power-assisted oil cylinder (14) and a right power-assisted oil cylinder (15) also participate in lifting through a master station electromagnetic directional valve (6), a middle shaft of each power-assisted claw (28,28a) drives an inner support arm (34) to swing to support a lifting table board (22) to lift upwards, vertical plates on two sides of a power-assisted assembly (28-1) of each power-assisted claw (28,28a) to be lifted to a certain height are in contact with a transverse plate (35) welded in the middle of the inner support arm (34), and the power-assisted lifting process is finished to continue to lift.
The hydraulic oil in the rod cavities of the master auxiliary oil cylinder (13), the left power-assisted oil cylinder (14) and the right power-assisted oil cylinder (15) returns to the oil tank of the power unit along with the rising of the lifter.
The ascending process of the sub-platform main oil cylinder (16) and the sub-platform auxiliary oil cylinder (17) of the secondary lifting device (23) is similar to that of the main platform, only the sub-platform electromagnetic directional valve (7) is opened to open an oil way, and no assistance is provided in the ascending process of the support arm.
If one oil cylinder in the lifting machine frames P1 and P2 rises to the highest point in advance, and therefore the oil drainage channels of the oil cylinders are communicated, no matter the main oil cylinder and the auxiliary oil cylinder have channels in the rising process, oil in the rodless cavity flows back to the oil tank, the pressurization phenomenon cannot occur, and the slow oil cylinder also can play a leveling role in eliminating accumulated errors when rising to the highest point.
The inclination angle sensors (31 and 31a) are used for automatically eliminating the leveling accumulated error of the hydraulic system in the lifting process of the lifting machine, when the table top (P2) of the lifting machine is lower than the table top (P1), the PC board sends an instruction to the leveling electromagnetic valve according to the data comparison of the two inclination angle sensors (31 and 31a), the leveling electromagnetic valve (6a) is opened, and oil supplementing leveling is carried out on the master auxiliary oil cylinder (13).
When a vehicle is to be lifted down by a lifting machine, the electromagnetic unloading valve (9) and the master electromagnetic directional valve (6) are simultaneously powered on to be opened, the lifting machine frames P1 and P2 transmit force to a piston rod of the master main oil cylinder (12) and a piston rod (12-2) of the master auxiliary oil cylinder (13) under the action of the self weight of the vehicle and the machine, the piston rod (12-2) pushes the piston (12-3), the master auxiliary oil cylinder (13) returns hydraulic oil to a rod cavity of the master main oil cylinder (12) through the piston (12-3), and the master main oil cylinder (12) returns the hydraulic oil to an oil tank through the master electromagnetic directional valve (6), the electromagnetic unloading valve (9) and the pressure compensation throttle valve (10) through the piston (12-3). At the moment, the left power-assisted oil cylinder (14) and the right power-assisted oil cylinder (15) also participate in descending through the master station electromagnetic directional valve (6).
The descending process of the lifting machine mother platform is accompanied by the locking tooth detection and unlocking processes of the racks P2 (26) and P1 (27), and the locking tooth (26-2) is pushed upwards to unlock only by overcoming the tension of the tension spring (26-16) after the cylinder (26-5) is filled with high-pressure gas. Meanwhile, two proximity switches (26-14) respectively detect the lock tooth limiting plates (26-12) to determine whether the convex parts (26-17) (lock tongues) of the lock teeth (26-2) are all jacked up or not, and transmit signals to the control system, if the lock tongues (26-17) of any 1 lock tooth (26-2) are not jacked up, the lifter cannot descend, and the vehicle is prevented from being in danger of overturning.
And hydraulic oil is sucked back from an oil tank of the power unit along with the descending process of a rod cavity of the master auxiliary oil cylinder (13), a rod cavity of the left power-assisted oil cylinder (14) and a rod cavity of the right power-assisted oil cylinder (15). The hydraulic oil has the function of lubricating the cylinder barrel of the oil cylinder, and the cylinder barrel is prevented from rusting when meeting humid air when the equipment is stopped for a long time.
The descending process of the sub-platform main oil cylinder (16) and the sub-platform auxiliary oil cylinder (17) of the secondary lifting device (23) is similar to that of the main platform, and only the sub-platform electromagnetic directional valve (7) is opened to open an oil path.
If the lifting machine locks the teeth, the lifting machine, whether the mother platform or the secondary lifting, needs to be lifted a little to ensure that the mechanical locks of the racks on the two sides are fully opened, and then the descending operation is carried out.
The inclination angle sensors (31 and 31a) are used for automatically eliminating the leveling accumulated error of the hydraulic system in the descending process of the lifting machine, when the table top (P2) of the lifting machine is higher than the table top (P1), the PC board sends an instruction to the leveling solenoid valve according to the data comparison of the two inclination angle sensors (31 and 31a), the leveling solenoid valve (6a) is opened, and oil drainage leveling is carried out on the master auxiliary oil cylinder (13).
The oil cylinder structure is not only suitable for scissor type lifting machines, but also comprises a column type lifting machine.
The working process of the invention is explained below with reference to the drawings.
The operation of the corner disc is explained as follows:
a) before the vehicle is driven onto the lifter, the pin shafts of the two fixed closing members (24-14) are inserted into the base (24-3) through the small holes of the rotating disc (24-5)
The turntable (24-5) is fixed in the fixing hole, the front wheel of the vehicle is opened on the turntable (24), the vehicle is lifted by the secondary lifting (23) before the vehicle is positioned by four wheels,
the front wheel of the vehicle is lifted away from the corner disc (24), the pin shaft of the fixed pin assembly (24-14) is pulled out of the fixed holes of the rotary disc (24-5) and the base (24-3), the rotary disc (24-5) is in a floating state at the moment, when the secondary lifting (23) is lowered, the wheel contacts the rotary disc (24-5) of the corner disc (24) again, and the rotary disc (24-5) can rotate and laterally move under the action of factors such as the camber angle and the kingpin inclination angle of the wheel of the vehicle.
b) The rotary disc (24-5) slides and rotates on the bead disc (24-4);
c) the floating sleeve (24-1) is connected with the rotary table (24-5) through a countersunk head screw (24-6) and slides or rotates along with the rotary table (24-5), and the sliding and rotating ranges are limited by a middle groove of the base (24-3);
the baffle plate (24-2) is used for preventing the floating sleeve (24-1) from bouncing out of the hole in the base (24-3).
The secondary lifting structure (23) is horizontally placed on the lifting table top (22), the lifting table top (22) of the lifting machine is also placed at the lowest point, the vehicle is driven to the lifting table top (22) of the lifting machine, the primary table is lifted to a required height, the oil cylinder (16) of the secondary lifting structure (23) is started to push the support arm assembly (23-28) in the secondary table, the table plate assembly (23-29) is lifted to a height capable of drawing the drawing assembly (23-3), the drawing assembly (23-3) is drawn to the position where the top point of the vehicle can be reached, the maximum height is continuously lifted, and then the locking operation is carried out, at the moment, the thin air cylinder (23-30) is in an exhaust state, and the transverse shaft of the locking plate (23-27) which slides leftwards leans on the locking block at the right end of the locking bottom plate (23-22) to lock teeth; when the lifting platform descends, delayed ascending action is needed to unlock the lock, the thin cylinder (23-30) is communicated with high-pressure gas to jack the lock plate (23-27) to be in an unlocked state, then the piston rod of the cylinder (16) starts to descend, the lock plate (23-27) slides leftwards after passing through the lock block at the right end of the lock bottom plate (23-22), the slide block (23-25) on the support arm assembly (23-28) in the sub-platform slides leftwards on the main platform surface, and the lower part of the platform plate assembly (23-29) descends and is flat on the lifting platform surface (22).
Before the vehicle runs onto the lifting machine, two fixing pin fittings (25-6) are inserted into holes on the corners of the side sliding bottom plate fittings (25-1) for fixing, so as to ensure that the side sliding plate (25-5) is in a locking state in the running process of the vehicle; when four-wheel positioning is carried out, the vehicle is lifted by the lifting machine, and then the two fixing pin assembly pieces (25-6) are drawn out from the holes on the corners of the side sliding bottom plate assembly pieces (25-1); when the vehicle descends onto the side sliding plate (25-5) again, the side sliding plate (25-5) can slide or swing in two directions through two sliding structures (25-13) under the action of factors such as the camber angle and the kingpin inclination angle of the vehicle wheel.
The side-sliding bottom plate assembly (25-1) cuts two rectangular holes in the middle of the bottom plate (25-1-1), and then welds the square frame (25-1-2) with a shoulder on the square frame (25-13), and the structure is favorable for fully utilizing the thickness space size to ensure that the side sliding is thinner; in the limited space, a side sliding block (25-11) with a shoulder is installed and slides transversely in a square frame (25-1-2) with a shoulder, and a rectangular sliding groove with a shoulder is designed below the side sliding block (25-11) to allow a side sliding pin shaft (25-10) with a shoulder to slide longitudinally.
The side slide sand rack (25-2) provides support for the side slide (25-5) when sliding and rolls between the side slide sand rack (25-2) and the side slide bottom plate assembly (25-1). When the vehicle is lifted without load, the side sliding plate (25-5) can be reset by the tension of the tension spring (25-2-3).
When the lifter ascends, the rack and rack assembly (26-8) extends and retracts along with the lifter in the lock gear box assembly (26-1), and the upper inclined plane of the teeth of the rack and rack assembly (26-8) pushes the lower inclined plane of the lock tongue (26-17) of the lock teeth (26-2) to overcome the pulling force of the tension spring (26-16) to unlock.
When the lifter descends, the air cylinder (26-5) is charged with high-pressure air and pushes up the locking teeth (26-2) to unlock against the pulling force of the tension spring (26-16). Meanwhile, the two proximity switches (26-14) respectively detect the lock tooth limiting plates (26-12) to determine whether the lock tongues (26-17) of the lock teeth (26-2) are jacked up or not, and transmit signals to the PC board chip, if the lock tongues (26-17) of any 1 lock tooth (26-2) are not jacked up, the lifter cannot descend, and the vehicle rollover risk is prevented.
When the lifting machine locks the tooth to operate, the air cylinder (26-5) is communicated with the atmosphere to release pressure, the rack and rack assembly (26-8) descends along with the lifting machine in the lock tooth box assembly (26-1) in the descending process of the lifting machine to retract, the lock tooth (26-2) clamps the lock tongue (26-17) downwards on the tooth of the rack and rack assembly (26-8) under the action of spring force, and the lifting machine stops descending and locking the tooth.
By adjusting the distance between the front end face of the proximity switch (26-14) and the lock tooth limiting plate (26-12), the situation that the lock tongue (26-17) of the lock tooth (26-)2 enters the tooth position of the rack and pinion assembly (26-8) is ensured, and the proximity switch (26-14) senses the proximity signal of the lock tooth limiting plate (26-12). This signal is transmitted to the control system.
Only when the lock tongues (26-17) of the lock teeth (26-2) in the two sets of lock tooth structures (26) of the lifting machine enter the tooth positions of the rack and pinion assembly (26-8) and the two proximity switches (26-14) sense the proximity signals of the lock tooth limiting plates (26-12), the lifting machine can perform the lock tooth action, otherwise, the lifting machine can only perform the lifting action under the control of the control system without descending the lock teeth, and the risk of vehicle rollover caused by unilateral lock teeth is prevented.
When the lifting machine is lifted at the bottom, the power-assisted claw (28) is pushed by a piston rod of a cylinder of the mother platform, a power-assisted roller (28-4) at the lower part of the power-assisted claw firstly contacts a base plate (33) on a base (20) of the lifting machine, the power-assisted claw is lifted in a power-assisted state at the moment, when the power-assisted claw is lifted to a certain height, vertical plates at two sides of a power-assisted assembly (28-1) of the power-assisted claw (28) and a power-assisted assembly (28a) are contacted with a transverse plate (35) welded in the middle of an inner support arm (34), and the power-assisted lifting process is ended to continue to lift.
When an obstacle is arranged below any one of two table tops (P1) and (P2) of the lifting machine, when the lifting machine descends, vertical plates on two sides of a rack power-assisted assembly (28-1) without the obstacle are still contacted with a transverse plate (35) welded in the middle of an inner support arm (34), the table top descends independently, a rack power-assisted claw (28) or (28a) without the obstacle is overturned under the driving of a master table cylinder piston rod, when the rack power-assisted claw (28) or (28a) overturns to a certain angle, a cam surface of a positioning plate (29) of the power-assisted claw (28) triggers a roller of a travel switch (30) to send a signal, and the signal is transmitted to a control system of the lifting machine to stop the lifting machine from descending continuously, so that the risk that the vehicle overturns due to unilateral descending of the lifting machine is avoided.
High-pressure oil from a power unit enters a rodless cavity of a master cylinder (12) from a joint (12-5), a piston (12-3) moves to the inner end face of a guide sleeve (12-4) under the action of the high-pressure oil, at the moment, a lifter rises to the highest point, passes through an oil hole (12-6) and an outer circular oil guide groove (12-7) on the piston (12-3), enters an oil duct (12-9) between the outer circle of a cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4) from a cylinder barrel (12-1) by designing 6 small holes (12-8) on the circumference of the cylinder barrel (12-1), passes through a groove (12-9) on the guide sleeve (12-4) and an oil hole (12-11) on the guide sleeve (12-4), and is connected to a rodless cavity of a master cylinder (13) by the joint (12-5), the process of flowing through the auxiliary cylinder (13) of the master station is the same as that of the master station main oil cylinder (12), and finally flows back to an oil tank of the power unit through an oil path channel on the piston (12-3), the cylinder barrel (12-1) and the guide sleeve (12-4), so that air in the oil path and the oil cylinder is discharged, and simultaneously, the two table surfaces (P1) and (P2) are leveled synchronously.
The piston (12-3) is in the process of extending. Within 13mm from the inner end face of the guide sleeve (12-4), automatic oil supplement, exhaust (primary installation) and leveling action are started. The sealing ring (12-14) already passes through six small holes (12-8) on the cylinder barrel (12-1), edges and corners of the small holes are smooth to process, the sealing ring cannot be scratched, at the moment, high pressure (pressure peak value) cannot be generated on the sealing ring (12-14) due to the fact that the piston (12-3) reaches the stroke end point, meanwhile, oil flows bypass the sealing ring (12-14), liquid flow cannot flow through a sealing device of the piston (12-3) at high pressure and high speed, adverse effects are generated on the sealing ring (12-14), and sealing is protected.
The smaller the aperture of 6 small holes (12-8) designed on the circumference of the cylinder barrel (12-1), the more stable the floating state when the piston (12-3) moves to be within 13mm from the inner end face of the guide sleeve (12-4).
The design structure of the oil drainage channel can also be used at the other end (cylinder head end) of the oil cylinder, the cylinder head can be designed into a threaded connection mode (instead of a welding mode), the oil drainage channel communication of the two oil cylinders can be realized when the lifting machine is lowered to a low point, and oil supplementing and draining leveling is carried out on the lifting machine; the method is particularly suitable for being used on a gantry type lifting machine with an inverted oil cylinder.
The oil drainage channel structure is designed at the other end (cylinder head end) of the oil cylinder, when the oil cylinder is applied to a scissor lift, the speed is slow when the oil cylinder starts to ascend, oil drainage small holes (12-8) in the cylinder barrel (12-1) are designed to be smaller, the oil drainage quantity is controlled to ensure that the initially ascending oil quantity of the oil cylinder is enough to establish ascending pressure, and the oil cylinder can normally ascend when a sealing ring on a piston passes through the small holes in the cylinder barrel.
When the lifter falls to the lowest point, the control system defaults to 0 for the data difference value of the inclination angle sensors (31 and 31a), namely the two table surfaces are parallel, the values of the inclination angle sensors (31) and the inclination angle sensors (31a) are compared at any time in the lifting process of the lifter, and when the difference value is changed to be that the height difference exceeds 5mm, leveling control is started.
When the lifting machine rises, when the table top (P2) of the lifting machine is lower than the table top (P1), the leveling solenoid valve (6a) is opened, and oil supplementing leveling is carried out on the main table auxiliary oil cylinder (13).
When the lifting machine descends, when the table top (P2) of the lifting machine is higher than the table top (P1), the leveling solenoid valve (6a) is opened, and oil drainage leveling is performed on the auxiliary oil cylinder (13) of the main table.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.

Claims (8)

1. The oil cylinder structure comprises a first oil cylinder (12) and a second oil cylinder (13), and is characterized in that the first oil cylinder (12) and the second oil cylinder (13) are connected in series, and the annular area of a rod cavity of the first oil cylinder (12) is equal to the area of a rodless cavity of the second oil cylinder (13);
the oil cylinder comprises a piston (12-3), the piston (12-3) is connected with a piston rod (12-2), and the piston rod (12-2) is connected with the power-assisted claws (28) and (28 a); the end face of the piston (12-2) is provided with an oil hole (12-6), the oil hole (12-6) bypasses a support ring (12-12) on the outer wall of the piston (12-2) and is communicated with an annular oil guide groove (12-7) on the outer circle of the piston (12-2), the circumference of the cylinder barrel (12-1) is provided with a hole (12-8), the hole (12-8) is communicated with the oil guide groove (12-7), the end part of the cylinder barrel (12-1) is arranged in the guide sleeve (12-4), and a sealing ring (12-13) is arranged between the inner wall of the guide sleeve (12-4) and the outer wall of the cylinder barrel (12-1) and is arranged in a groove on the inner wall of the guide sleeve (12-4).
2. The cylinder structure according to claim 1, characterized in that the outer wall of the piston (12-3) is provided with an annular groove, a Gray ring (12-14) is arranged in the annular groove, and the outer end of the Gray ring (12-14) is in contact with the inner wall of the cylinder barrel (12-1).
3. The cylinder structure according to claim 1, characterized in that the cylinder barrel (12-1) is provided at its rear end with a through hole, where a joint (12-15) is provided.
4. The cylinder structure according to claim 1, characterized in that the number of the holes (12-8) is six, and the holes are uniformly distributed along the circumferential direction; the hole (12-8) is arranged on the outer side of the sealing ring (12-13), an oil duct (12-9) is arranged between the outer circle of the cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4) at the position of the six small holes (12-8) on the cylinder barrel (12-1), a groove (12-10) is processed on the end face of the inner hole of the guide sleeve (12-4), the groove (12-10) is communicated with the oil duct (12-9), and the groove (12-9) is communicated with an oil hole (12-11) on the guide sleeve (12-4) and an oil duct of the joint (12-5).
5. The oil cylinder structure according to claim 1, characterized by further comprising a power-assisted anti-overturning component, wherein the power-assisted anti-overturning component comprises a first power-assisted claw (28) and a second power-assisted claw (28a), the first power-assisted claw (28) is arranged at the piston rod end of the first oil cylinder (12), the second power-assisted claw (28a) is arranged at the piston rod end of the second oil cylinder (13), and the power-assisted claws are connected with an inner support arm (34) of the lift through shafts.
6. The cylinder structure according to claim 5, characterized in that a first power cylinder (14) and a second power cylinder (15) are provided, the lower end of the power cylinder is coupled to the lower end of the inner arm (34) of the lift, and the piston rod end at the upper end of the power cylinder is coupled to the upper part of the outer arm (21) of the lift.
7. The cylinder structure according to claim 1, characterized in that the assisting claw (28), (28a) comprises an assisting assembly (28-1), a central shaft hole (28-9) of the assisting assembly (28-1) is connected with a support arm (34) in the lifting machine through a shaft, an upper shaft hole (28-8) of the assisting assembly (28-1) is connected with a piston rod lug ring of the first cylinder (12), and a lower shaft hole (28-10) of the assisting assembly (28-1) is connected with the assisting roller (32) through an assisting roller shaft (28-2), an assisting spacer (28-3), a shaft sleeve (28-5) and a retainer ring (28-6).
8. The cylinder structure according to claim 5, further comprising a travel switch (30), wherein the travel switch (30) is mounted on the inner side of the inner arm (34), the mounting plate has a slot with an adjustable distance, and the roller of the travel switch (30) is engaged with the cam surface of the positioning plate (29) of the power-assisted assembly (28-1).
CN202111036038.0A 2021-09-06 2021-09-06 Oil cylinder structure Active CN113636495B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117553048A (en) * 2023-11-16 2024-02-13 苏州艾沃意特汽车设备有限公司 Hydraulic cylinder for lifting machine and scissor type lifting machine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017684A1 (en) * 1979-04-23 1980-10-29 Showa Manufacturing Co., Ltd. Hydraulic cylinder for a propulsion unit of an inboard or outboard motor
CN203463409U (en) * 2013-09-29 2014-03-05 合肥长源液压股份有限公司 Oil cylinder with piston provided with small radial hole
CN103867525A (en) * 2014-04-08 2014-06-18 武汉科技大学 Variable speed double-piston series-connection hydraulic cylinder
CN104314918A (en) * 2014-06-18 2015-01-28 国家电网公司 Hydraulic operating mechanism for high pressure switch and hydraulic working cylinder thereof
CN106957027A (en) * 2017-04-26 2017-07-18 中意泰达(营口)汽车保修设备有限公司 The full-automatic leveling system of lifting machine
JP2019171398A (en) * 2018-03-27 2019-10-10 住友重機械工業株式会社 Hydraulic press
CN112483507A (en) * 2020-12-09 2021-03-12 南京理工大学 Leveling hydraulic cylinder
CN113003471A (en) * 2021-03-01 2021-06-22 营口市立德电子科技有限公司 Lifting machine
CN215711447U (en) * 2021-09-06 2022-02-01 中意泰达(营口)汽车保修设备有限公司 Oil cylinder structure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017684A1 (en) * 1979-04-23 1980-10-29 Showa Manufacturing Co., Ltd. Hydraulic cylinder for a propulsion unit of an inboard or outboard motor
CN203463409U (en) * 2013-09-29 2014-03-05 合肥长源液压股份有限公司 Oil cylinder with piston provided with small radial hole
CN103867525A (en) * 2014-04-08 2014-06-18 武汉科技大学 Variable speed double-piston series-connection hydraulic cylinder
CN104314918A (en) * 2014-06-18 2015-01-28 国家电网公司 Hydraulic operating mechanism for high pressure switch and hydraulic working cylinder thereof
CN106957027A (en) * 2017-04-26 2017-07-18 中意泰达(营口)汽车保修设备有限公司 The full-automatic leveling system of lifting machine
JP2019171398A (en) * 2018-03-27 2019-10-10 住友重機械工業株式会社 Hydraulic press
CN112483507A (en) * 2020-12-09 2021-03-12 南京理工大学 Leveling hydraulic cylinder
CN113003471A (en) * 2021-03-01 2021-06-22 营口市立德电子科技有限公司 Lifting machine
CN215711447U (en) * 2021-09-06 2022-02-01 中意泰达(营口)汽车保修设备有限公司 Oil cylinder structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117553048A (en) * 2023-11-16 2024-02-13 苏州艾沃意特汽车设备有限公司 Hydraulic cylinder for lifting machine and scissor type lifting machine

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