A multi-stage oil cylinder jacking device

Abstract

The present invention relates to a multi-stage oil cylinder jacking device, comprising a base, a jacking bracket, a multi-stage oil cylinder, an intermediate oil cylinder and a jack head. The base comprises a longitudinal movable slide, a transverse movable slide, a longitudinal movable oil cylinder, a transverse movable oil cylinder and a transverse movable slide. A longitudinal movable oil cylinder for driving the transverse movable slide to move longitudinally therein is installed on the longitudinal movable slide, and a transverse movable oil cylinder for driving the transverse movable slide to move transversely therein is installed on the transverse movable slide. Four multi-stage oil cylinders are installed on the transverse movable slide. The jacking bracket is supported and installed on the cylinder rods of the four multi-stage oil cylinders. A jack head driven by the intermediate oil cylinder is installed in the middle of the jacking bracket. The present invention is scientifically and rationally designed and has the advantages of being easy to operate, being adjustable in the horizontal direction, not being easily deflected, having strong jacking stability and being easy to implement.

Description

Technical Field

[0001] The invention belongs to the field of aircraft rescue devices and relates to a multi-stage oil cylinder jacking device. Background Art

[0002] A hydraulic jacking device is commonly used in aircraft rescues. When the aircraft tilts due to a malfunction, the hydraulic jacking device acts on the tilted wings. Using multi-stage hydraulic cylinders, the device lifts the aircraft from its tilted position, thereby straightening the fuselage.

[0003] During a lift operation, the apex of the hydraulic cylinder jacking mechanism acts on a fixed lift point on the wing. As the wing is lifted, the lift point changes, causing the jacking mechanism to shift horizontally. Existing jacking mechanisms lack the ability to adjust to the lift point, making them prone to deflection and hindering stable lifts. During the lift, the wing exerts significant force on the jacking mechanism, causing the lift point to shift horizontally. If the lift direction slightly deviates from the direction of the force applied by the wing, the horizontal force distributed by the wing can cause the jacking mechanism to shift, and in severe cases, tip over. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage oil cylinder jacking device with scientific and reasonable structural design, convenient operation, ability to be adjusted in the horizontal direction, not easy to deflect, strong jacking stability, and easy to implement.

[0005] The present invention solves the technical problem by the following technical solutions:

[0006] A multi-stage oil cylinder jacking device is characterized in that it includes a base, a jacking bracket, a multi-stage jacking oil cylinder, an intermediate oil cylinder and a jack head. The base includes a longitudinal movable slide, a transverse movable slide, a longitudinal movable oil cylinder, a transverse movable oil cylinder and a transverse movable slide. A transverse movable slide is slidably installed on the longitudinal movable slide, a transverse movable slide is installed on the transverse movable slide, a longitudinal movable oil cylinder for driving the transverse movable slide to move longitudinally therein is installed on the longitudinal movable slide, and a transverse movable oil cylinder for driving the transverse movable slide to move transversely therein is installed on the transverse movable slide; four multi-stage jacking oil cylinders are installed on the transverse movable slide, the jacking bracket is supported and installed on the cylinder rods of the four multi-stage jacking oil cylinders, and a jack head driven by the intermediate oil cylinder is installed in the middle of the jacking bracket.

[0007] Moreover, the jacking bracket includes a jacking frame, a mounting platform, a mounting arm and a connecting flange. The jacking frame is composed of a surrounding wall plate and a mounting plate. The length of the surrounding wall plate is greater than the length of the mounting plate. The surrounding wall plate and the mounting plate are spaced apart to form an octagonal frame structure. An octagonal mounting platform is provided in the middle of the frame structure. Mounting arms connected to the mounting platform are provided on the left and right sides of each mounting plate. The cylinder rod earrings of the multi-stage jacking cylinder are connected between the two mounting arms on a mounting plate through a pin shaft. An intermediate cylinder is installed on the bottom surface of the mounting platform through a connecting flange. The cylinder rod of the intermediate cylinder passes through the middle of the mounting platform, and a jack head is installed on the cylinder rod of the intermediate cylinder.

[0008] Furthermore, it also includes an anti-deflection reinforcement mechanism, which includes an anti-deflection bracket and an intermediate bracket. A plurality of intermediate brackets are provided at the lower end of the jacking bracket, each intermediate bracket includes an intermediate frame and a connecting ear. Connecting ears extending horizontally to both sides are provided at the four corners of the intermediate frame, and perforations are provided on the connecting ears.

[0009] An upward-extending anti-deflection bracket is provided on both sides of the horizontally movable slide, and the anti-deflection bracket is composed of a plurality of anti-deflection plates. The anti-deflection plates are structures in which hinged connectors are installed on the left and right sides of the upper and lower ends of the plate body. The anti-deflection plates are connected in sequence through through shafts. The anti-deflection plate at the top is hinged to the connecting ear of the jacking bracket, and the anti-deflection plate at the bottom is hinged to the horizontally movable slide, and the odd-numbered hinge points in the middle are respectively hinged to the connecting ears of the middle frame.

[0010] Moreover, the hinged connection is an integrally formed structure, which consists of a ring body and clamping legs symmetrically arranged at the upper and lower ends of the ring body. A clamping head protruding inward is provided at the end of each clamping leg. The clamping legs are clamped on the side end face of the anti-deflection plate, and clamping holes compatible with the clamping heads are provided on the upper and lower end faces of the anti-deflection plate.

[0011] Moreover, the intermediate support further comprises a partition plate, which is arranged in a cross shape in the intermediate frame. The partition plate divides the intermediate frame into four equal spaces, and each space is opposite to the multi-stage lifting cylinder.

[0012] The advantages and beneficial effects of the present invention are:

[0013] 1. This multi-stage oil cylinder jacking equipment, through the design of an adjustable base, realizes the forward and backward movement of the jacking device in the horizontal and vertical directions, so that it can cooperate with the movement of the jacking points on the wing to prevent its deflection.

[0014] 2. This multi-stage oil cylinder jacking equipment can further strengthen the bearing capacity of the jacking device by setting up the anti-deflection reinforcement mechanism. Once there is a tendency of deflection, the deflection can be avoided by the support of the anti-deflection plate.

[0015] 3. The present invention is scientifically and rationally designed, and has the advantages of being easy to operate, adjustable in the horizontal direction, not prone to deflection, having strong jacking stability, and being easy to implement. It is a highly innovative multi-stage oil cylinder jacking equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the present invention before jacking;

[0017] Figure 2 for Figure 1 Front view of

[0018] Figure 3 This is a schematic diagram of the structure after jacking of the present invention;

[0019] Figure 4 for Figure 3 Front view of

[0020] Figure 5 A schematic structural diagram of the assembly of the base and the multi-stage lifting cylinder of the present invention;

[0021] Figure 6 Schematic diagram of the structure of the anti-deflection plate of the present invention.

[0022] Description of reference numerals:

[0023] 1- Anti-deflection bracket, 2- Mounting arm, 3- Jack head, 4- Mounting platform, 5- Lifting bracket, 6- Base, 7- Multi-stage lifting cylinder, 8- Intermediate cylinder, 9- Intermediate bracket, 10- Lateral movement cylinder, 11- Longitudinal movement cylinder, 12- Longitudinal movement slide, 13- Lateral movement slide, 14- Connecting ear, 15- Lateral movement slide, 16- Articulated connection, 17- Anti-deflection plate. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0025] A multi-stage oil cylinder jacking device, the innovation of which lies in: comprising a base 6, a jacking bracket 5, a multi-stage jacking oil cylinder 7, an intermediate oil cylinder 8 and a jack head 3; the base comprising a longitudinal movable slide 12, a transverse movable slide 13, a longitudinal movable oil cylinder 11, a transverse movable oil cylinder 10 and a transverse movable slide 15; a transverse movable slide is slidably installed on the longitudinal movable slide; a transverse movable slide is installed on the transverse movable slide; a longitudinal movable oil cylinder for driving the transverse movable slide to move longitudinally therein is installed on the longitudinal movable slide; a transverse movable oil cylinder for driving the transverse movable slide to move transversely therein is installed on the transverse movable slide; four multi-stage jacking oil cylinders are installed on the transverse movable slide; the jacking bracket is supported and installed on the cylinder rods of the four multi-stage jacking oil cylinders; a jack head driven by the intermediate oil cylinder is installed in the middle of the jacking bracket.

[0026] The jacking bracket is used to install the intermediate oil cylinder. Under the action of the multi-stage jacking oil cylinder at the bottom, the drive is raised and lowered, and then the action of the intermediate oil cylinder realizes the lifting and lowering of the jack head. The jacking bracket includes a jacking frame, a mounting platform 4, a mounting arm 2 and a connecting flange. The jacking frame is composed of a wall plate and a mounting plate. The length of the wall plate is greater than the length of the mounting plate. The wall plate and the mounting plate are spaced apart to form an octagonal frame structure. An octagonal mounting platform is provided in the middle of the frame structure. Mounting arms connected to the mounting platform are provided on the left and right sides of each mounting plate. The cylinder rod earrings of the multi-stage jacking oil cylinder are connected between the two mounting arms on a mounting plate by a pin shaft. The intermediate oil cylinder is installed on the bottom surface of the mounting platform through a connecting flange. The cylinder rod of the intermediate oil cylinder passes through the middle of the mounting platform, and the jack head is installed on the cylinder rod of the intermediate oil cylinder.

[0027] In order to further prevent the deflection of the jacking device, an anti-deflection reinforcement mechanism is also designed. The anti-deflection reinforcement mechanism includes an anti-deflection bracket 1 and an intermediate bracket 9. A plurality of intermediate brackets are provided at the lower end of the jacking bracket. Each intermediate bracket includes an intermediate frame and a connecting ear 14. Connecting ears extending horizontally to both sides are provided at the four corners of the intermediate frame, and perforations are provided on the connecting ears.

[0028] On both sides of the transverse slide are upwardly extending anti-deflection brackets. These foldable brackets consist of multiple anti-deflection plates 17, each with hinged connectors 16 mounted on the left and right sides of the upper and lower ends. The plates are connected sequentially via through-axles: the top plate is hinged to the connecting lugs of the jacking bracket, the bottom plate is hinged to the transverse slide, and the odd-numbered hinge points in the middle are hinged to the connecting lugs of the intermediate frame. As the multi-stage lift cylinder rods rise and fall, the anti-deflection brackets and the intermediate brackets follow their movement.

[0029] The hinged connector is an integrally formed structure consisting of a ring body and symmetrically positioned clip legs at the upper and lower ends of the ring body. Each clip leg has an inwardly protruding clip head at the end. The clip legs clip onto the side end surfaces of the anti-deflection plate. Clip holes are provided on the upper and lower end surfaces of the anti-deflection plate to accommodate the clip heads. The hinged connectors on adjacent anti-deflection plates are staggered to allow for the insertion of a through-shaft, which is mounted on the front and rear connecting ears, to achieve articulation.

[0030] The intermediate support also includes a partition plate, which is arranged in a cross-shaped manner within the intermediate frame. The partition plate divides the intermediate frame into four equal spaces, each space facing the multi-stage lifting cylinder. The partition plate can strengthen the intermediate support.

[0031] The multi-stage lifting oil cylinder at the bottom and the middle oil cylinder in this lifting device are all multi-stage oil cylinders.

[0032] The steps for using this device are as follows:

[0033] 1. Place the lifting device under the object to be lifted and fix the top point;

[0034] 2. The top intermediate cylinder begins to operate, extending the cylinder rod, raising the top position and the corresponding anti-deflection bracket. After the top cylinder extends, the second cylinder begins to operate, and the jack continues to lift upward. During the upward lift, the jack's top point may need to be displaced horizontally based on the actual working conditions on site. For example, during an aircraft rescue, if one side of the main landing gear tilts due to an accident and the aircraft needs to be straightened, the jack's top point will undergo horizontal displacement toward the fuselage. At this time, the lateral or longitudinal displacement cylinders are activated to achieve horizontal lateral / longitudinal displacement.

[0035] 3. Use the jack to push the object to the required height, which is the height required to straighten the aircraft.

[0036] 4. When the jack is retracted, the bottom cylinder will be retracted first, then the top cylinder will be retracted in sequence, and the top cylinder will be retracted last. Return the horizontal and vertical cylinders to their original positions;

[0037] 5. Move the lifting device from the work site to the storage warehouse.

[0038] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A multi-stage oil cylinder jacking device, characterized in that: It includes a base, a lifting bracket, a multi-stage lifting oil cylinder, an intermediate oil cylinder and a jack head. The base includes a longitudinal movable slide, a transverse movable slide, a longitudinal movable oil cylinder, a transverse movable oil cylinder and a transverse movable slide. A transverse movable slide is slidably installed on the longitudinal movable slide, a transverse movable slide is installed on the transverse movable slide, a longitudinal movable oil cylinder for driving the transverse movable slide to move longitudinally therein is installed on the longitudinal movable slide, and a transverse movable oil cylinder for driving the transverse movable slide to move transversely therein is installed on the transverse movable slide; four multi-stage lifting oil cylinders are installed on the transverse movable slide, the lifting bracket is supported and installed on the cylinder rods of the four multi-stage lifting oil cylinders, and a jack head driven by the intermediate oil cylinder is installed in the middle of the lifting bracket; The jacking bracket includes a jacking frame, a mounting platform, a mounting arm and a connecting flange. The jacking frame is composed of a surrounding wall plate and a mounting plate. The length of the surrounding wall plate is greater than that of the mounting plate. The surrounding wall plate and the mounting plate are spaced apart to form an octagonal frame structure. An octagonal mounting platform is provided in the middle of the frame structure. Mounting arms connected to the mounting platform are provided on the left and right sides of each mounting plate. The cylinder rod earrings of the multi-stage jacking cylinder are connected between the two mounting arms on one mounting plate through a pin shaft. An intermediate oil cylinder is installed on the bottom surface of the mounting platform through a connecting flange. The cylinder rod of the intermediate oil cylinder passes through the middle of the mounting platform, and a jack head is installed on the cylinder rod of the intermediate oil cylinder. It also includes an anti-deflection reinforcement mechanism, which includes an anti-deflection bracket and an intermediate bracket. A plurality of intermediate brackets are provided at the lower end of the jacking bracket. Each intermediate bracket includes an intermediate frame and a connecting ear. Connecting ears extending horizontally to both sides are provided at the four corners of the intermediate frame, and perforations are provided on the connecting ears. An upward-extending anti-deflection bracket is provided on both sides of the horizontally movable slide, and the anti-deflection bracket is composed of a plurality of anti-deflection plates. The anti-deflection plates are structures in which hinged connectors are installed on the left and right sides of the upper and lower ends of the plate body. The anti-deflection plates are connected in sequence through through shafts. The anti-deflection plate at the top is hinged to the connecting ear of the jacking bracket, and the anti-deflection plate at the bottom is hinged to the horizontally movable slide, and the odd-numbered hinge points in the middle are respectively hinged to the connecting ears of the middle frame.

2. The multi-stage oil cylinder lifting device according to claim 1, characterized in that: The hinged connection is an integrally formed structure, which consists of a ring body and symmetrically arranged clamping legs at the upper and lower ends of the ring body. A clamping head protruding inward is provided at the end of each clamping leg. The clamping legs are clamped on the side end face of the anti-deflection plate, and clamping holes compatible with the clamping heads are provided on the upper and lower end faces of the anti-deflection plate.

3. The multi-stage oil cylinder jacking device according to claim 1, characterized in that: The intermediate support further comprises a partition plate, which is arranged in a cross shape in the intermediate frame. The partition plate divides the intermediate frame into four equal spaces, and each space is opposite to the multi-stage lifting cylinder.

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