CN210261012U - Aviation hydraulic elevator - Google Patents
Aviation hydraulic elevator Download PDFInfo
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- CN210261012U CN210261012U CN201920642733.3U CN201920642733U CN210261012U CN 210261012 U CN210261012 U CN 210261012U CN 201920642733 U CN201920642733 U CN 201920642733U CN 210261012 U CN210261012 U CN 210261012U
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Abstract
The utility model provides an aviation hydraulic elevator, it includes the bottom frame, the top of bottom frame is supported through cutting fork elevating system and is installed top operation platform, it is used for the hydraulic cylinder subassembly to the jacking of top operation platform to install on the fork elevating system, install on the hydraulic cylinder subassembly and be used for carrying out the hydro-cylinder mechanical lock mechanism of auto-lock to it, the hydraulic cylinder subassembly links to each other with the hand pump structure and provides the jacking action that hydraulic power drove the hydraulic cylinder subassembly. The lift cylinder structure of the elevator adopts a purely mechanical locking device, and when an oil pipe suddenly bursts or the bottom of the cylinder suddenly drops, the piston rod can be mechanically locked, so that safety accidents caused by sudden dropping of a platform are avoided.
Description
Technical Field
The utility model relates to an aircraft overhauls the equipment field, especially an aviation hydraulic elevator.
Background
The aviation hydraulic elevator mainly provides an approaching platform for ground service personnel to complete maintenance of high-level equipment of the airplane or serves as a supporting platform for dismounting airborne equipment. The hydraulic elevator that the army had now is mostly the steel structure, and its jacking power mainly relies on hydraulic cylinder to realize, and hydraulic cylinder mainly is as lift platform's jacking power device.
At present, the traditional anti-falling mode of a lifting platform is mainly characterized in that an anti-explosion valve is arranged at an oil port of a hydraulic oil cylinder, when an oil pipe bursts suddenly, the anti-explosion valve acts to cut off and close an oil return path so as to seal oil in a cylinder barrel of the hydraulic oil cylinder or throttle the oil path to reduce the oil return flow to prevent the platform from falling suddenly, but if the hydraulic oil cylinder has faults such as sudden falling of a cylinder bottom, the anti-sudden falling function cannot be achieved. And further brings potential safety hazards to the operators working on the platform.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides an aviation hydraulic elevator, the lift cylinder structure of this elevator adopts pure mechanical type locking device, and homoenergetic locks piston rod machinery when oil pipe bursts suddenly or the hydro-cylinder bottom of the cylinder drops suddenly appearing, avoids the platform to fall suddenly and causes the incident.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the utility model provides an aviation hydraulic elevator, it includes the bottom frame, the top of bottom frame is supported through cutting fork elevating system and is installed top operation platform, it is used for the pneumatic cylinder subassembly to the jacking of top operation platform to install on the fork elevating system, install on the hydraulic cylinder subassembly and be used for carrying out the hydro-cylinder mechanical lock mechanism of auto-lock to it, the hydraulic cylinder subassembly links to each other with hand pump structure and provides the jacking action that hydraulic power drove the hydraulic cylinder subassembly.
The bottom frame comprises a bottom frame, foot margin rollers are installed at four corners of the bottom frame, screw rods are installed on two side walls of the bottom frame through supports for supporting, a ladder stand is fixedly installed on the side wall of the head of the bottom frame through a connecting frame, handrails are installed on the side faces of the ladder stand, and a traction rod is hinged to the side wall of the tail of the bottom frame.
The scissor lifting mechanism comprises a first scissor rod hinged to the top of the bottom rack through a hinge base, the centers of the first scissor rod and the second scissor rod are hinged through a scissor main shaft, and the top end of the second scissor rod is hinged to the top operation platform through the hinge base; the other ends of the first scissor rod and the second scissor rod are respectively in sliding fit with roller sliding chutes arranged on the top operating platform and the bottom rack through rollers; and a bottom mounting cross beam and a top mounting cross beam for mounting a hydraulic cylinder assembly are fixedly mounted between the first scissor rod and the second scissor rod.
The top operation platform comprises a platform frame, a platform plate is installed on the platform frame, a platform guardrail is fixedly installed on the periphery of the top of the platform frame, and a plurality of tool boxes are fixedly installed on the side wall of the top of the platform guardrail.
The hydraulic cylinder component adopts a single-action hydraulic cylinder and comprises a cylinder barrel, the bottom of the cylinder barrel is encapsulated with a cylinder bottom plug through a cylinder bottom cover, a piston rod is arranged in the cylinder barrel, the end of the piston rod is provided with a piston, the top of the cylinder barrel is fixed with a locking nut, the top of the locking nut is fixed with an upper cylinder cover, and the upper cylinder cover is provided with a cylinder mechanical lock mechanism for locking the piston rod; an oil duct is processed in the center of the piston rod and is communicated with an oil inlet joint arranged at the end of the piston rod, and the oil inlet joint is connected with an oil outlet pipe of the hand pump structure; and the oil cylinder mechanical lock mechanism is matched with a thread groove processed on the locking piston rod.
A plurality of first sealing rings are arranged outside the cylinder bottom plug; and a plurality of second sealing rings are arranged outside the piston, and a guide ring is arranged between the two second sealing rings.
The oil cylinder mechanical lock mechanism comprises an outer shell, a nut matched with a thread groove on a piston rod is supported and installed in the outer shell through a thrust ball bearing, a ratchet wheel is arranged outside the nut and matched with a pawl, the pawl is hinged to an ear seat on the side wall of the outer shell through a hinge bolt, the top of the nut is packaged in the outer shell through a gland, and the thrust ball bearing is arranged between the gland and the nut; a pawl matching groove used for matching with a pawl is processed on the side wall of the outer shell; and a locking torsion spring is arranged on the hinged bolt and between the outer shell and the pawl.
The tail of the pawl is hinged with a lever-type unlocking mechanism for driving the pawl to rotate for unlocking, the lever-type unlocking mechanism comprises a hinge joint hinged to the tail of the pawl, an unlocking pull wire is connected to the hinge joint, the other end of the unlocking pull wire penetrates through a notch in a limiting plate, and the limiting plate is fixed on the side wall of the outer shell; the other end of the unlocking pull wire is connected with a manual pull wire mechanism for driving the unlocking pull wire to be pulled.
The manual wire pulling mechanism comprises an installation bottom plate, the installation bottom plate is fixedly installed on a top operation platform, locking positioning plates are symmetrically installed at the top of the installation bottom plate, a rotating sleeve is hinged to each locking positioning plate through a handle bolt, a rotating handle is installed at the top of the rotating sleeve in a sliding fit mode, a reset spring is arranged between each rotating handle and each rotating sleeve, a positioning pin is fixed to the side wall of the bottom of each rotating handle, the positioning pin penetrates through a vertical sliding groove in each rotating sleeve and is matched with a locking limiting groove in each locking positioning plate, a vertical rod is fixed to the side wall of each rotating sleeve, the tail end of each vertical rod is hinged to a wire pulling joint, and each wire pulling joint is connected with an unlocking wire of the lever type unlocking mechanism.
The hand-operated pump structure comprises a hand-operated pump fixed on the top operation platform, a crank is mounted on the hand-operated pump, and an oil inlet of the hand-operated pump is connected with an oil tank through an oil pipe; and an oil outlet of the manual pump is connected with an oil inlet joint of the hydraulic cylinder assembly through an oil pipe.
And a limit in-place sensor matched with the scissor lifting mechanism is installed at the bottom of the top operation platform and is connected with the electromagnet for controlling the oil supply of the hydraulic cylinder assembly and controls the on-off of the limit in-place sensor.
The utility model discloses there is following beneficial effect:
1. through adopting the hydraulic cylinder structure of above-mentioned structure, it has the screw that is used for the auto-lock, and in the piston rod lift process, external screw thread and the internal thread of screw on through the piston rod cooperate, and then drive the screw and rotate, and the ratchet on the screw will cooperate with the pawl, guarantees that it can only rotate along a direction, and then the effectual piston rod antiport that has prevented, and then has played the purpose of auto-lock, and then has guaranteed hydraulic cylinder's security.
2. The screw material chooses for use aluminium bronze, can effectively prevent its corrosion and influence its rotation, respectively installs a one-way thrust ball bearing at the contact surface at screw upper and lower both ends for reduce the rotatory frictional force of screw, the nimble rotation of the screw of being convenient for.
3. The scissor lifting mechanism can realize lifting action.
4. Can play the effect of auto-lock through foretell hydro-cylinder mechanical lock mechanism, normally rise the in-process when the piston rod, will drive the normal rotation of screw through the thread groove, ratchet and pawl on the screw cooperate simultaneously, the normal rotation of ratchet has also been guaranteed, and then guarantee the normal lift of piston rod, and be not influenced, when breaking down at hydraulic system, perhaps the pneumatic cylinder subassembly breaks down, when sudden off-load, the pawl will cooperate with the ratchet this moment, and then effectively prevent that it from taking place the antiport, and then lock the support to the piston rod, effectively prevent its danger of rapid descent, simultaneously carry out effectual support to top operation platform.
5. The lever-type unlocking mechanism with the structure can be used for unlocking the piston rod when the top operation platform descends. The pawl is driven to rotate by unlocking the pull wire, so that the piston rod can drive the nut to normally rotate in the descending process, and the normal descending action of the piston rod cannot be influenced.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a first perspective three-dimensional view of the overall structure of the present invention.
Fig. 2 is a second perspective three-dimensional view of the overall structure of the present invention.
Fig. 3 is a third perspective three-dimensional view of the overall structure of the present invention.
Fig. 4 is a front view and a partial sectional view of the hydraulic cylinder assembly of the present invention.
Fig. 5 is a front view of the hydraulic cylinder assembly of the present invention.
Fig. 6 is an exploded view of the hydraulic cylinder assembly of the present invention.
Fig. 7 is a view from a-a in fig. 4 according to the present invention.
Fig. 8 is a three-dimensional view of the first viewing angle of the hydraulic cylinder assembly of the present invention.
Fig. 9 is a second perspective three-dimensional view of the hydraulic cylinder assembly of the present invention.
Fig. 10 is a three-dimensional view of a third viewing angle of the hydraulic cylinder assembly of the present invention after the outer housing has been removed.
Fig. 11 is a first perspective three-dimensional view of the connection between the manual wire pulling mechanism and the oil cylinder mechanical lock mechanism of the present invention.
Fig. 12 is a second perspective three-dimensional view of the connection between the manual wire pulling mechanism and the cylinder mechanical lock mechanism of the present invention.
Fig. 13 is a third perspective three-dimensional view of the connection between the manual wire pulling mechanism and the mechanical lock mechanism of the oil cylinder of the present invention.
In the figure: the device comprises a bottom rack 1, a scissor lifting mechanism 2, a traction rod 3, a top operation platform 4, a hydraulic cylinder assembly 5, a hand-operated pump structure 6, a manual wire drawing mechanism 7 and an oil cylinder mechanical lock mechanism 8;
a bottom frame 101, a screw support 102, ground rollers 103, a connecting frame 104, a ladder 105 and handrails 106;
the device comprises a hinge base 201, a first scissor rod 202, a roller 203, a second scissor rod 204, a roller chute 205, a scissor main shaft 206, a bottom mounting beam 207 and a top mounting beam 208;
a platform frame 401, a platform plate 402, a platform fence 403, a tool box 404;
the oil cylinder comprises a cylinder barrel 501, a cylinder bottom plug 502, a first sealing ring 503, an oil cylinder bottom cover 504, an upper cylinder cover 505, a copper locking sleeve 506, a locking nut 507, a piston 508, a piston rod 509, a second sealing ring 5010, a guide ring 5011, an oil duct 5012, an oil inlet joint 5013 and a thread groove 5014;
an oil tank 601, a manual pump 602 and a crank 603;
the device comprises an installation bottom plate 701, a locking positioning plate 702, a handle bolt 703, a locking limiting groove 704, a rotating sleeve 705, a rotating handle 706, a positioning pin 707, a vertical rod 708 and a stay wire joint 709;
the device comprises an outer shell 801, a limiting plate 802, a pull rod 803, a hinge head 804, a pawl 805, a locking torsion spring 806, an ear seat 807, a hinge bolt 808, a gland 809, a pawl matching groove 8010, a nut 8011, a thrust ball bearing 8012 and a ratchet 8013;
the limit to position sensor 9.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 1-13, an aviation hydraulic elevator, it includes bottom frame 1, the top of bottom frame 1 supports through scissors elevating system 2 and installs top work platform 4, install the pneumatic cylinder subassembly 5 that is used for the jacking of top work platform 4 on the scissors elevating system 2, install on the hydraulic cylinder subassembly 5 and be used for carrying out the hydro-cylinder mechanical lock mechanism 8 of auto-lock to it, pneumatic cylinder subassembly 5 links to each other with hand pump structure 6 and provides the jacking action that hydraulic power drove hydraulic cylinder subassembly 5. The hydraulic elevator with the structure can be used for maintenance work of crew members in maintenance areas with the height of less than 4 meters, such as a front equipment cabin, a cabin, two sides of a fuselage, a tail and the like. The operations of inspection, lubrication, repair, troubleshooting, debugging and the like are carried out by a carrier during the preliminary flight preparation, the direct flight preparation, the second-time flight preparation, the inspection before the second-time flight on a take-off line, and the regular maintenance of the airplane. In the use, it drives hydraulic cylinder subassembly 5 through hand pump structure 6, and then cuts fork elevating system 2 through hydraulic cylinder subassembly 5 drive, finally goes up and down through cutting fork elevating system 2 drive top work platform 4, and then reaches the effect of jacking. In the jacking process, the problem of rapid descending caused by sudden unloading of the hydraulic cylinder assembly 5 can be prevented through the oil cylinder mechanical lock mechanism 8, so that a good self-locking effect is achieved on the hydraulic cylinder assembly 5, and the safety of operation is guaranteed.
Further, the bottom frame 1 includes a bottom frame 101, foot rollers 103 are installed at four corners of the bottom frame 101, screw supports 102 are installed on two side walls of the bottom frame 101 through brackets, a ladder 105 is fixedly installed on a side wall of the head of the bottom frame 101 through a connecting frame 104, a handrail 106 is installed on a side surface of the ladder 105, and a traction rod 3 is hinged to a side wall of the tail of the bottom frame 101. The bottom frame 1 having the above structure can be used to support the entire elevator.
Further, the scissor lifting mechanism 2 comprises a first scissor rod 202 hinged to the top of the bottom rack 1 through a hinge base 201, the centers of the first scissor rod 202 and a second scissor rod 204 are hinged through a scissor spindle 206, and the top end of the second scissor rod 204 is hinged to the top work platform 4 through the hinge base; the other ends of the first scissor lever 202 and the second scissor lever 204 are in sliding fit with roller chutes 205 arranged on the top working platform 4 and the bottom rack 1 through rollers 203 respectively; a bottom mounting beam 207 and a top mounting beam 208 for mounting the hydraulic cylinder assembly 5 are fixedly mounted between the first scissor rod 202 and the second scissor rod 204. The scissor lifting mechanism 2 can realize lifting action.
Further, the top work platform 4 comprises a platform frame 401, a platform plate 402 is installed on the platform frame 401, a platform guardrail 403 is fixedly installed on the periphery of the top of the platform frame 401, and a plurality of tool boxes 404 are fixedly installed on the side wall of the top of the platform guardrail 403. The operator can be supported by the top work platform 4.
Further, the hydraulic cylinder assembly 5 adopts a single-acting hydraulic cylinder and comprises a cylinder barrel 501, a cylinder bottom plug 502 is packaged at the bottom of the cylinder barrel 501 through a cylinder bottom cover 504, a piston rod 509 is arranged inside the cylinder barrel 501, a piston 508 is installed at the end of the piston rod 509, a locking nut 507 is fixed at the top of the cylinder barrel 501, an upper cylinder cover 505 is fixed at the top of the locking nut 507, and a cylinder mechanical lock mechanism 8 for locking the piston rod 509 is installed on the upper cylinder cover 505; an oil duct 5012 is processed in the center of the piston rod 509, the oil duct 5012 is communicated with an oil inlet joint 5013 arranged at the end of the piston rod 509, and the oil inlet joint 5013 is connected with an oil outlet pipe of the hand pump structure 6; the cylinder mechanical lock mechanism 8 is fitted with a threaded groove 5014 formed in the locking piston rod 509. Can provide hydraulic power for whole companion ladder through foretell pneumatic cylinder subassembly 5, and then guarantee normal jacking action.
Furthermore, a plurality of first sealing rings 503 are arranged outside the cylinder bottom plug 502; a plurality of second sealing rings 5010 are provided outside the piston 508, and a guide ring 5011 is provided between the two second sealing rings 5010. The hydraulic cylinder assembly 5 can be well sealed by the sealing ring.
Further, the oil cylinder mechanical lock mechanism 8 comprises an outer shell 801, a nut 8011 matched with a thread groove 5014 on the piston rod 509 is supported and installed inside the outer shell 801 through a thrust ball bearing 8012, a ratchet wheel 8013 is arranged outside the nut 8011, the ratchet wheel 8013 is matched with a pawl 805, the pawl 805 is hinged to an ear seat 807 on the side wall of the outer shell 801 through a hinge bolt 808, the top of the nut 8011 is packaged inside the outer shell 801 through a gland 809, and the thrust ball bearing is arranged between the gland 809 and the nut 8011; a pawl matching groove 8010 matched with a pawl 805 is processed on the side wall of the outer shell 801; a locking torsion spring 806 is provided on the hinge bolt 808 between the outer housing 801 and the pawl 805. The oil cylinder mechanical lock mechanism 8 can play a self-locking role, the working principle is that when the piston rod 509 normally rises, the screw 8011 is driven to normally rotate through the thread groove 5014, meanwhile, the ratchet 8013 on the screw 8011 is matched with the pawl 805, the normal rotation of the ratchet 8013 is also guaranteed, and further the normal lifting of the piston rod 509 is guaranteed, and the normal lifting is not influenced, when a hydraulic system fails, or the hydraulic cylinder assembly 5 fails, when the hydraulic cylinder assembly 5 is unloaded suddenly, the pawl 805 is matched with the ratchet 8013 at the moment, and further the reverse rotation of the piston rod 509 is effectively prevented, and the piston rod 509 is locked and supported, so that the danger of rapid descending of the piston rod is effectively prevented, and meanwhile, the top operation platform 4 is effectively supported.
Further, a lever-type unlocking mechanism for driving the pawl 805 to rotate for unlocking is hinged to the tail of the pawl 805, the lever-type unlocking mechanism comprises a hinge head 804 hinged to the tail of the pawl 805, an unlocking pull wire 803 is connected to the hinge head 804, the other end of the unlocking pull wire 803 penetrates through a notch in a limiting plate 802, and the limiting plate 802 is fixed on the side wall of the outer shell 801; the other end of the unlocking pull wire 803 is connected with a manual pull wire mechanism 7 for driving the unlocking pull wire to pull. The lever-type unlocking mechanism with the structure can be used for unlocking the piston rod 509 when the top operation platform 4 descends, and the unlocking pull wire 803 drives the pawl 805 to rotate in the operation process, so that the piston rod 509 can drive the screw 8011 to normally rotate in the descending process, and the normal descending action of the piston rod 509 cannot be influenced.
Further, the manual wire pulling mechanism 7 comprises an installation bottom plate 701, the installation bottom plate 701 is fixedly installed on the top operation platform 4, locking positioning plates 702 are symmetrically installed at the top of the installation bottom plate 701, a rotating sleeve 705 is hinged to the locking positioning plates 702 through handle bolts 703, a rotating handle 706 is installed at the top of the rotating sleeve 705 in a sliding fit manner, a return spring is arranged between the rotating handle 706 and the rotating sleeve 705, a positioning pin 707 is fixed on the side wall of the bottom of the rotating handle 706, the positioning pin 707 penetrates through a vertical sliding groove in the rotating sleeve 705 and is matched with a locking limiting groove 704 in the locking positioning plate 702, a vertical rod 708 is fixed on the side wall of the rotating sleeve 705, a wire pulling joint 709 is hinged to the tail end of the vertical rod 708, and the wire pulling joint 709 is connected with an unlocking wire pulling 803 of the lever type unlocking mechanism. When the locking state between the ratchet wheel and the pawl needs to be released in the working process of the manual wire pulling mechanism 7, the bottom of the positioning pin 707 is in contact fit with the arc-shaped groove of the locking limiting groove 704 by pressing the rotating handle 706, then the rotating handle 706 is manually operated, the rotating sleeve 705 is driven to rotate by the rotating handle 706, the vertical rod 708 is driven to rotate by the rotating sleeve 705, the wire pulling joint 709 is driven by the vertical rod 708, the unlocking wire pulling 803 is driven by the wire pulling joint 709, and finally the pawl 805 is driven to rotate by the unlocking wire pulling 803, so that the pawl 805 is separated from the locking with the pawl 805, and the purpose of releasing the locking is achieved.
Further, the hand pump structure 6 comprises a hand pump 602 fixed on the top work platform 4, a crank 603 is installed on the hand pump 602, and an oil inlet of the hand pump 602 is connected with the oil tank 601 through an oil pipe; the oil outlet of the manual pump 602 is connected with the oil inlet joint 5013 of the hydraulic cylinder assembly 5 through an oil pipe. The hydraulic cylinder assembly 5 can be provided with hydraulic power by the hand pump structure 6.
Furthermore, a limit in-place sensor 9 matched with the scissor lifting mechanism 2 is installed at the bottom of the top operating platform 4, and the limit in-place sensor 9 is connected with an electromagnet used for controlling oil supply of the hydraulic cylinder assembly 5 and controls the on-off of the hydraulic cylinder assembly. The limit in-place sensor 9 ensures that the hydraulic system can be automatically controlled after the top working platform 4 reaches the highest position so as to stop the continuous oil supply and prevent the danger caused by the continuous rising of the top working platform.
The working principle of the utility model is as follows:
through the aviation hydraulic oil cylinder structure with the structure, in the working process, when the piston rod is normally lifted, the piston rod 509 drives the nut 8011 at the top of the piston rod to rotate, and through the matching between the ratchet wheel 8013 on the nut 8011 and the pawl 805, the nut 8011 is ensured to rotate only along one direction and cannot rotate reversely, so that the nut 8011 is always matched with the piston rod 509 to achieve the purpose of self-locking;
when the locking state between the ratchet wheel and the pawl needs to be released, the rotating handle 706 is pressed to enable the bottom of the positioning pin 707 to be in contact fit with the arc-shaped groove of the locking limiting groove 704, then the rotating handle 706 is manually operated, the rotating sleeve 705 is driven to rotate through the rotating handle 706, then the rotating sleeve 705 drives the vertical rod 708 to rotate, further the vertical rod 708 drives the stay wire joint 709, then the stay wire joint 709 drives the unlocking stay wire 803, finally the pawl 805 is driven to rotate through the unlocking stay wire 803, and the pawl 805 is separated from the locking with the pawl 805, so that the purpose of releasing the locking is achieved.
Claims (10)
1. The utility model provides an aviation hydraulic elevator, it includes bottom frame (1), top operation platform (4), its characterized in that are installed through cutting fork elevating system (2) support to the top of bottom frame (1): the hydraulic cylinder assembly (5) used for jacking the top operation platform (4) is installed on the scissor lifting mechanism (2), an oil cylinder mechanical lock mechanism (8) used for self-locking the hydraulic cylinder assembly (5) is installed on the hydraulic cylinder assembly (5), and the hydraulic cylinder assembly (5) is connected with a hand pump structure (6) and provides hydraulic power to drive the jacking action of the hydraulic cylinder assembly (5).
2. The aviation hydraulic elevator as claimed in claim 1, wherein: the bottom rack (1) comprises a bottom framework (101), foot margin rollers (103) are installed at four corners of the bottom framework (101), screw supports (102) are installed on two side walls of the bottom framework (101) through supports, a ladder stand (105) is fixedly installed on the side wall of the head of the bottom framework (101) through a connecting frame (104), handrails (106) are installed on the side face of the ladder stand (105), and a traction rod (3) is hinged to the side wall of the tail of the bottom framework (101).
3. The aviation hydraulic elevator as claimed in claim 1, wherein: the scissor lifting mechanism (2) comprises a first scissor rod (202) hinged to the top of the bottom rack (1) through a hinge base (201), the centers of the first scissor rod (202) and a second scissor rod (204) are hinged through a scissor spindle (206), and the top end of the second scissor rod (204) is hinged to the top operation platform (4) through the hinge base; the other ends of the first scissor rod (202) and the second scissor rod (204) are in sliding fit with roller sliding grooves (205) arranged on the top working platform (4) and the bottom rack (1) through rollers (203); and a bottom mounting cross beam (207) and a top mounting cross beam (208) for mounting the hydraulic cylinder assembly (5) are fixedly mounted between the first scissor rod (202) and the second scissor rod (204).
4. The aviation hydraulic elevator as claimed in claim 1, wherein: top operation platform (4) include platform frame (401), install platform board (402) on platform frame (401), have platform guardrail (403) at the peripheral fixed mounting in top of platform frame (401), fixed mounting has a plurality of toolboxes (404) on the top lateral wall of platform guardrail (403).
5. The aviation hydraulic elevator as claimed in claim 1, wherein: the hydraulic cylinder assembly (5) is a single-action hydraulic cylinder and comprises a cylinder barrel (501), a cylinder bottom plug (502) is packaged at the bottom of the cylinder barrel (501) through a cylinder bottom cover (504), a piston rod (509) is arranged inside the cylinder barrel (501), a piston (508) is installed at the end of the piston rod (509), a locking nut (507) is fixed at the top of the cylinder barrel (501), an upper cylinder cover (505) is fixed at the top of the locking nut (507), and a cylinder mechanical lock mechanism (8) for locking the piston rod (509) is installed on the upper cylinder cover (505); an oil duct (5012) is machined in the center of the piston rod (509), the oil duct (5012) is communicated with an oil inlet joint (5013) arranged at the end of the piston rod (509), and the oil inlet joint (5013) is connected with an oil outlet pipe of the hand pump structure (6); the oil cylinder mechanical lock mechanism (8) is matched with a thread groove (5014) machined on the locking piston rod (509).
6. The aviation hydraulic elevator as claimed in claim 5, wherein: a plurality of first sealing rings (503) are arranged outside the cylinder bottom plug (502); a plurality of second sealing rings (5010) are arranged outside the piston (508), and a guide ring (5011) is arranged between the two second sealing rings (5010).
7. An aviation hydraulic elevator as claimed in claim 1 or 5, wherein: the oil cylinder mechanical lock mechanism (8) comprises an outer shell (801), a nut (8011) matched with a thread groove (5014) on a piston rod (509) is supported and installed in the outer shell (801) through a thrust ball bearing (8012), a ratchet wheel (8013) is arranged outside the nut (8011), the ratchet wheel (8013) is matched with a pawl (805), the pawl (805) is hinged to an ear seat (807) on the side wall of the outer shell (801) through a hinge bolt (808), the top of the nut (8011) is packaged in the outer shell (801) through a gland (809), and the thrust ball bearing is arranged between the gland (809) and the nut (8011); a pawl matching groove (8010) used for matching with a pawl (805) is machined in the side wall of the outer shell (801); and a locking torsion spring (806) is arranged on the hinge bolt (808) and between the outer shell (801) and the pawl (805).
8. The aviation hydraulic elevator as claimed in claim 7, wherein: the tail of the pawl (805) is hinged with a lever-type unlocking mechanism for driving the pawl (805) to rotate for unlocking, the lever-type unlocking mechanism comprises a hinge head (804) hinged to the tail of the pawl (805), an unlocking pull wire (803) is connected to the hinge head (804), the other end of the unlocking pull wire (803) penetrates through a notch in a limiting plate (802), and the limiting plate (802) is fixed on the side wall of the outer shell (801); the other end of the unlocking pull wire (803) is connected with a manual pull wire mechanism (7) for driving the unlocking pull wire to be pulled.
9. The aviation hydraulic elevator as claimed in claim 8, wherein: the manual wire pulling mechanism (7) comprises an installation bottom plate (701), the installation bottom plate (701) is fixedly installed on the top operation platform (4), locking positioning plates (702) are symmetrically installed at the top of the installation bottom plate (701), a rotating sleeve (705) is hinged to the locking positioning plates (702) through handle bolts (703), a rotating handle (706) is installed at the top of the rotating sleeve (705) in a sliding fit mode, a return spring is arranged between the rotating handle (706) and the rotating sleeve (705), a positioning pin (707) is fixed on the side wall of the bottom of the rotating handle (706), the positioning pin (707) penetrates through a vertical sliding groove in the rotating sleeve (705) and is matched with a locking limiting groove (704) in the locking positioning plate (702), a vertical rod (708) is fixed on the side wall of the rotating sleeve (705), and a wire pulling joint (709) is hinged to the tail end of the vertical rod (708), the stay wire joint (709) is connected with an unlocking stay wire (803) of the lever type unlocking mechanism.
10. The aviation hydraulic elevator as claimed in claim 1, wherein: the hand-operated pump structure (6) comprises a hand-operated pump (602) fixed on the top operation platform (4), a crank handle (603) is installed on the hand-operated pump (602), and an oil inlet of the hand-operated pump (602) is connected with an oil tank (601) through an oil pipe; an oil outlet of the manual pump (602) is connected with an oil inlet joint (5013) of the hydraulic cylinder assembly (5) through an oil pipe;
and a limit in-place sensor (9) matched with the scissor lifting mechanism (2) is installed at the bottom of the top operating platform (4), and the limit in-place sensor (9) is connected with an electromagnet used for controlling oil supply of the hydraulic cylinder assembly (5) and controls the on-off of the sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642733.3U CN210261012U (en) | 2019-05-07 | 2019-05-07 | Aviation hydraulic elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642733.3U CN210261012U (en) | 2019-05-07 | 2019-05-07 | Aviation hydraulic elevator |
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| CN210261012U true CN210261012U (en) | 2020-04-07 |
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| CN201920642733.3U Active CN210261012U (en) | 2019-05-07 | 2019-05-07 | Aviation hydraulic elevator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104594A (en) * | 2019-05-07 | 2019-08-09 | 中国人民解放军第五七一零工厂 | A kind of hydraulic air lift |
| CN111977577A (en) * | 2020-08-20 | 2020-11-24 | 王士凯 | Box type hydraulic lifting platform |
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2019
- 2019-05-07 CN CN201920642733.3U patent/CN210261012U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104594A (en) * | 2019-05-07 | 2019-08-09 | 中国人民解放军第五七一零工厂 | A kind of hydraulic air lift |
| CN110104594B (en) * | 2019-05-07 | 2024-03-29 | 凌云(宜昌)航空装备工程有限公司 | Aviation hydraulic elevator |
| CN111977577A (en) * | 2020-08-20 | 2020-11-24 | 王士凯 | Box type hydraulic lifting platform |
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