CN212195971U

CN212195971U - Helicopter consignment device

Info

Publication number: CN212195971U
Application number: CN202020627627.0U
Authority: CN
Inventors: 周景雷; 周斌; 陈顺利
Original assignee: Xi An Huake Aviat Technology Co ltd
Current assignee: Xi An Huake Aviat Technology Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-12-22
Anticipated expiration: 2030-04-23

Abstract

The utility model relates to the technical field of aviation, and discloses a helicopter consignment device, which comprises a consignment main body and two movable wheels, wherein two rocker shafts are connected with two sides of the consignment main body; the consignment main body comprises a manual hydraulic pump body, an oil cylinder connected with the manual hydraulic pump body and used for obtaining oil, and a piston arranged in the oil cylinder; the rack shaft is connected with the skirt part of the piston, a pin shaft matched with the pin shaft insertion hole is arranged above the rack shaft, and a gear shaft which is meshed with the rack and fixed in the middle of the oil cylinder is arranged below the rack shaft; and a grabbing piece matched with the fixed helicopter undercarriage is fixed on the lower part of the oil cylinder. The utility model discloses a manual hydraulic pump body makes hydro-cylinder pressurization, pressure release to realize pressure signal's transmission through piston, rack shaft and gear shaft, make and form the moment around the one end axle head is rotatory between the gear shaft rocking arm axle, overcome helicopter gravity load, lift the helicopter, promote to make the mechanism auto-lock through the round pin axle when the take the altitude, whole device safety and stability has guaranteed the safe steady transfer of helicopter.

Description

Helicopter consignment device

Technical Field

The utility model relates to an aviation technical field, in particular to helicopter consignment device.

Background

The sledge type landing gear helicopter cannot freely walk on the ground, and can move only by means of a special consignment device when the aircraft needs to be parked in a garage or transported from the garage to an apron or dispatched among the aprons.

In a traditional light and small carrying helicopter, land wheels are respectively arranged on undercarriage on the left side and undercarriage on the right side of the helicopter, then a worker presses down forcibly at the tail of the helicopter, the land wheels are used as fulcrums to lift the helicopter off the ground, and then another two persons are required to push the helicopter forwards forcibly on the two sides of the helicopter to move the helicopter; the land wheel on the undercarriage is a mechanical land wheel, so that the undercarriage is difficult to install, cannot be corrected and cannot automatically recover to descend; the operation steps are complex, the process is time-consuming and labor-consuming, the working labor intensity is high, and the safe, stable and efficient transfer of the helicopter cannot be guaranteed.

At present, domestic aircraft manufacturers mostly select foreign imported products, the cost is high, key parts cannot be used universally, and the maintenance period is long after sale.

SUMMERY OF THE UTILITY MODEL

The utility model provides a helicopter consignment device solves current sled formula undercarriage helicopter and can't freely walk subaerial, removes inconvenient technical problem.

The utility model discloses a realize through following scheme:

a helicopter consignment device comprises a consignment main body and two movable wheels, wherein two sides of the consignment main body are connected with two rocker arms;

the delivery main body comprises a manual hydraulic pump body, an oil cylinder connected with the manual hydraulic pump body and used for obtaining hydraulic pressure, a piston arranged in the oil cylinder and used for converting the hydraulic pressure, a rack shaft connected with a piston skirt part, a pin shaft matched with a pin shaft insertion hole in the upper part of the rack shaft, a gear shaft meshed with a rack in the lower part of the rack shaft and fixed in the middle of the oil cylinder, and a grabbing piece matched with a helicopter undercarriage and fixed on the lower part of the oil cylinder.

Furthermore, the rocker arm shaft comprises a first cross rod, a second vertical rod and a third cross rod which are integrally formed, and the first cross rod is fixedly connected with the gear shaft through a pin.

Furthermore, the upper part of the pin shaft is fixedly connected with a handle.

Further, the movable wheel comprises an axle and a tire, and the rocker arm shaft is fixed on the central shaft of the axle.

Further, the grabbing piece comprises a fixed structure at the upper part and a lifting structure with the lower part integrally formed with the fixed structure;

the fixing structure is a fixing strip penetrating through the bottom of the oil cylinder;

the lifting structure is a connecting plate and a claw hook which are arranged on two sides of the fixed structure, and the connecting plate and the claw hook are arranged into a whole.

Further, the claw hook is provided with two semicircular claw grooves, and the diameters of the claw grooves are adaptive to the diameter of the helicopter landing gear.

Furthermore, when the helicopter is supported, the landing gear of the helicopter is fixed on the grabbing piece, the manual hydraulic pump body inputs oil into the oil cylinder to push the piston to drive the rack shaft to move, and further drive the gear shaft to rotate anticlockwise around the central shaft, so that a torque rotating around the central shaft of the gear shaft is formed on the rocker shaft; as the oil in the oil cylinder increases, the moment increases, and the helicopter is lifted by overcoming the gravity of the helicopter; when the lifting device is lifted to a preset height, the pin shaft is inserted into the pin shaft insertion hole, the consignment main body is self-locked and freely moves by the moving wheel;

furthermore, when the helicopter is unloaded, the pin shaft is pulled out of the pin shaft insertion hole through the lifting handle, the helicopter descends to drive the rocker arm shaft to rotate clockwise and further drive the gear shaft to rotate, the gear shaft drives the rack shaft to move reversely, the manual hydraulic pump body returns oil, and the helicopter reaches the ground.

The utility model has the advantages of it is following:

the hydraulic cylinder is pressurized through the manual hydraulic pump body, hydraulic signals are transmitted through the piston, the rack shaft and the gear shaft, when the helicopter is lifted, the landing gear of the helicopter is fixed on the grabbing piece, oil is input into the oil cylinder through the manual hydraulic pump body, the piston is pushed to drive the rack shaft to move, and then the gear shaft is driven to rotate anticlockwise around the central shaft, so that torque rotating around the central shaft of the gear shaft is formed on the rocker shaft, and the torque is increased along with the increase of the oil in the oil cylinder, and the helicopter is lifted by overcoming the gravity of the helicopter; when the lifting device is lifted to a preset height, the pin shaft is inserted into the pin shaft insertion hole, the carrying device is self-locked and freely moves by virtue of the moving wheel; when the helicopter lands, the pin shaft is pulled out of the pin shaft insertion hole through the lifting handle, the helicopter descends under the action of self gravity to drive the rocker arm shaft to rotate clockwise and further drive the gear shaft to rotate, the gear shaft drives the rack shaft to move reversely, the manual hydraulic pump body returns oil, and the mechanism unloads; the whole device is safe and stable, cannot be out of control, and ensures the stability of the mechanism self-locking, thereby ensuring the safe, stable and efficient transfer of the helicopter.

Drawings

FIG. 1 is a block diagram of a helicopter consignment device;

FIG. 2 is an external structural view of a consignment body;

FIG. 3 is a cross-sectional view of the shipping body;

in the figure: 1-shipping body, 11-manual hydraulic pump body, 12-oil cylinder, 13-piston, 14-rack shaft, 141-pin shaft jack, 15-gear shaft, 16-pin shaft, 17-grabbing piece, 171-fixing strip, 172-connecting plate, 173-claw hook, 2-rocker shaft, 3-moving wheel, 31-wheel shaft and 32-tire.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

As shown in fig. 1, the helicopter consignment device comprises two rocker shafts 2 connected to two sides of a consignment body 1, and two moving wheels 3 connected to the outer ends of the rocker shafts 2;

as shown in fig. 2 and 3, the consignment body 1 comprises a manual hydraulic pump body 11, an oil cylinder 12 connected with the manual hydraulic pump body, a piston 13 arranged in the oil cylinder 12, a rack shaft 14 connected with the skirt part of the piston 13, a pin shaft 16 matched with a pin shaft insertion hole 141 arranged above the rack shaft, a gear shaft 15 meshed with a rack arranged below and fixed in the middle of the oil cylinder 12, and a grabbing piece 17 matched with a helicopter landing gear fixed at the lower part of the oil cylinder 12.

The rocker arm shaft 12 includes a first cross bar, a second vertical bar and a third cross bar which are integrally formed, and the first cross bar is fixedly connected with the gear shaft 15 through a pin.

The upper part of the pin shaft 16 is fixedly connected with a handle.

As shown in fig. 1, the moving wheel 3 includes an axle 31 and a tire 32, and the rocker shaft 2 is fixed on the center axis of the axle 31.

As shown in fig. 3, the grasping member 17 includes an upper fixing structure, which is a fixing strip 171 penetrating the bottom of the cylinder 12, and a lower lifting structure, which is a connecting plate 172 and a claw 173 disposed at both sides of the fixing structure, the connecting plate 172 and the claw 173 being integrally provided.

The claw 173 is provided with two semi-circular claw grooves, the diameter of which is adapted to the diameter of the helicopter landing gear.

When the helicopter is supported, the landing gear of the helicopter is sleeved in the two semicircular claw grooves of the claw hook 173, oil is provided for the oil cylinder 12 through the body of the manual hydraulic pump 11, the piston 13 drives the rack shaft 14 to move towards the opposite direction of the manual hydraulic pump 11 under the pushing of the oil, the gear shaft 15 meshed with the rack shaft 14 rotates around the center in the moving process of the rack shaft 14, the rocker shaft 2 rotates around the central shaft of the gear shaft 15 because the gear shaft 15 is fixedly connected with the rocker shaft 2 through a pin, and one end of the rocker shaft 2, which is far away from the gear shaft 15, forms a torque rotating around the gear shaft 15; with the continuous oil feeding of the manual hydraulic pump 11 to the oil cylinder 12, the driving force of the rack shaft 14 for driving the gear shaft 15 to rotate is increased, the torque of the rocker shaft 2 rotating around the gear shaft 15 is increased, the consignment main body overcomes the gravity of the helicopter, one end of the rocker shaft 2 close to the movable wheel 3 is static relative to the ground in the vertical direction, one end close to the gear shaft 15 drives the consignment main body 1 to rotate anticlockwise around the static end, meanwhile, the claw hook 173 slowly lifts the landing gear of the helicopter, when the rocker shaft 2 rotates for a certain angle, the helicopter reaches the designed lifting height, the pin shaft jack 141 arranged on the upper portion of the rack shaft 14 moves to the lower portion of the pin shaft 16, the pin shaft 16 is inserted into the pin shaft jack 141 under the action of the self gravity, the rack shaft 14 is automatically.

When the helicopter lands, the pin shaft 16 is manually lifted through the handle connected to the upper part of the pin shaft 16, the helicopter descends under the action of self weight, the rocker shaft 2 is driven by gravity to rotate clockwise, the rocker shaft 2 drives the gear shaft 15 to rotate clockwise, the gear shaft 15 drives the rack shaft 14 to move towards one side of the manual hydraulic pump 11, the rack shaft 14 moves to push the piston 12 to move reversely, so that the manual hydraulic pump 11 returns oil, and when the oil returns, the helicopter reaches the ground and is unloaded from the consignment device.

The whole device is safe and stable and cannot be out of control, so that the self-locking stability of the mechanism is ensured, and the safe, stable and efficient transfer of the helicopter is ensured.

The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.

Claims

1. A helicopter consignment device is characterized by comprising a consignment main body (1) with two rocker arms (2) connected at two sides and two movable wheels (3) connected at the outer ends of the rocker arms (2);

the consignment body (1) comprises a manual hydraulic pump body (11), an oil cylinder (12) connected with the manual hydraulic pump body and used for obtaining oil, and a piston (13) arranged in the oil cylinder (12); the rack shaft (14) is connected with the skirt part of the piston (13), a pin shaft (16) matched with the pin shaft insertion hole (141) is arranged above the rack shaft, and a gear shaft (15) which is meshed with the rack and fixed in the middle of the oil cylinder (12) is arranged below the rack shaft; the lower part of the oil cylinder (12) is provided with a grabbing piece (17) matched with the fixed helicopter undercarriage.

2. Helicopter consignment device according to claim 1, characterised in that said rocker shaft (2) comprises a first cross bar, a second vertical bar and a third cross bar, all in one piece, the first cross bar being fixedly connected to the gear shaft (15) by means of pins.

3. A helicopter haul device according to claim 1, characterized in that a handle is fixedly connected to the upper portion of said pin (16).

4. Helicopter haul arrangement according to claim 1, characterized in that said moving wheel (3) comprises an axle (31) and a tire (32), said rocker shaft (2) being fixed on the central shaft of the axle (31).

5. Helicopter hauling apparatus according to claim 1, characterised in that said gripping member (17) comprises a fixed structure and a lifting structure integral therewith;

the fixing structure is a fixing strip (171) penetrating through the bottom of the oil cylinder (12);

the lifting structure is provided with a connecting plate (172) and a claw hook (173) which are arranged on two sides of the fixed structure, and the connecting plate (172) and the claw hook (173) are integrally formed.

6. Helicopter hauling apparatus according to claim 5, characterised in that the claw hook (173) is provided with two semi-circular claw grooves, the diameter of which is adapted to the diameter of the helicopter landing gear.

7. The helicopter hauling device according to claim 1, wherein when the helicopter is lifted, the helicopter landing gear is fixed on the grabbing member (17), the manual hydraulic pump body (11) inputs oil into the oil cylinder (12), the piston (13) is pushed to drive the rack shaft (14) to move, and further the gear shaft (15) is driven to rotate anticlockwise around the central shaft, so that a torque rotating around the central shaft of the gear shaft (15) is formed on the rocker shaft (2); as the oil in the oil cylinder (12) is increased, the moment is increased, and the helicopter is lifted by overcoming the gravity of the helicopter; when the lifting device is lifted to a preset height, the pin shaft (16) is inserted into the pin shaft insertion hole (141), the consignment main body is self-locked and freely moves by means of the moving wheel (3).

8. A helicopter hauling apparatus according to claim 1 or 7, wherein when the helicopter is landed, the pin (16) is pulled out of the pin insertion hole (141) by the handle, the helicopter descends to drive the rocker shaft (2) to rotate clockwise, and further to drive the gear shaft (15) to rotate, the gear shaft (15) drives the rack shaft (14) to move in the opposite direction, the manual hydraulic pump body (11) returns oil, and the helicopter arrives at the ground.