CN117104521A - Emergency traction device for airplane - Google Patents

Abstract

The invention relates to an aircraft emergency traction device, which solves the technical problem of ensuring aircraft ground movement operations in emergency situations. It includes a frame, an upper arm, an upper arm lifting frame, a lower arm, a lower arm lifting frame, a hydraulic jack, and a blocking arm. , there are four universal wheels connected to the bottom of the frame, there are traction hooks on the left and right sides of the middle of the frame, a hydraulic jack is fixed in the middle of the rear of the frame, there is a blocking arm in the front of the frame, a lower arm lifting frame and a hydraulic jack connection, the lower arm lifting frame and the upper arm lifting frame are plugged into the same slot of the frame and can move up and down in the slot. The lower arm lifting frame 7 is connected to the upper arm lifting frame through a screw rod, and the height of the lower arm and the upper arm can be adjusted up and down; There are two pieces each, which are plugged into the slots of the upper arm lifting frame and the lower arm lifting frame respectively, and can move left and right in the slot respectively; the front-end connection between the blocking arm and the frame. The invention has simple structure, low cost, easy maintenance and use, and can complete the towing operation of the aircraft by using common equipment in civil aviation.

Description

An aircraft emergency traction device

Technical field

The invention relates to the technical field of aircraft ground service support, and specifically to an aircraft emergency traction device.

Background technique

In the field of airport special equipment technology, when various aircraft move on the ground, they often need to be dragged or pushed by tractors. For this purpose, a traction device needs to be configured between the tractor and the aircraft. Existing towing devices are divided into tow bar type and clamp type. The tow bar type separates the aircraft tractor from the tow bar. The tow bar and the towing vehicle are two separate independent devices. One end of the tow bar is connected to the aircraft, and the other end is connected to the aircraft. The tractor is connected to realize the towing or pushing operation of the aircraft. The clamp-on tractor is an aircraft tractor integrated with the clamp-on device and is an independent device, called a rodless tractor. On the premise that the tow bar is eliminated, the rodless tractor uses a clamping device to lift and clamp the front wheel of the aircraft for towing, thereby completing the towing or pushing operation of the aircraft.

However, when the existing technology is actually used, it is found that the towing devices of existing common aircraft in civil aviation cannot be used universally with many types of aircraft (such as private business jets, helicopters, fighter planes, etc.), and cannot meet the emergency support of civilian airports for fighter aircraft in wartime. , can only be equipped with special tractors, but when special equipment is used as emergency equipment reserve, there are problems such as high procurement costs, high subsequent maintenance costs, inconvenient equipment management, etc., and the frequency of use is low, resulting in a waste of resources.

Contents of the invention

The present invention is to solve the above technical problems and provide an aircraft emergency traction device with strong versatility.

The aircraft emergency traction device provided by the invention includes a frame, an upper arm lifting frame, a lower arm lifting frame, an upper arm, a lower arm, a hydraulic jack, a ratchet wrench and a blocking arm;

The overall frame is a U-shaped structure, with four universal wheels connected to the bottom, traction hooks on the left and right sides of the middle, two columns arranged side by side on both sides of the rear, and an open structure in the middle of the rear. There are T-shaped slots on the side; there are handrails on the back of the rack;

The blocking arm is connected to the front side of the frame, and the blocking arm can be opened and closed;

The lower arm lifting frame has an inverted T-shaped structure as a whole, with a transverse T-shaped slot on the front side of the bottom, a vertical plate box in the middle of the rear, and two symmetrical T-shaped connections on both sides of the rear side of the lower arm lifting frame. block, the front side of the vertical plate box is provided with an ear plate, the ear plate is provided with a screw rod support hole, the middle part of the upper plane at the bottom of the lower arm lifting frame is provided with a screw rod support blind hole, and both sides of the screw rod support blind hole are provided with There are several equally spaced locking pin holes; the two T-shaped connecting blocks of the lower arm lifting frame are respectively inserted into the T-shaped slots of the two columns at the rear of the frame;

The lower arm is an L-shaped square tube structure, with a trapezoidal cross-section at the front and a T-shaped connecting block at the rear. There is a locking blind hole in the middle of the top surface of the T-shaped connecting block of the lower arm. The T-shaped lower arm There is a threaded hole in the middle of the side of the connecting block; the T-shaped connecting blocks of the two lower arms are respectively inserted into the transverse T-shaped slots of the lower arm lifting frame, and the two lower arms are symmetrically arranged left and right; the threaded holes on the two lower arms The direction of rotation is opposite, and the two threaded holes are connected through a double-headed screw; the ratchet wrench is connected to the end of the double-headed screw; a locking pin can be passed through the locking pin hole of the lower arm lifting frame and then inserted into the lock of the lower arm. Pin in the blind hole to fix the lower arm;

The front side of the upper arm lifting frame is provided with a T-shaped slot, the rear side is provided with two symmetrically arranged T-shaped connecting blocks, the top surface is provided with a number of equally spaced locking holes, and the middle part of the top surface of the upper arm lifting frame is provided with a trapezoidal thread sleeve , several locking holes are located on both sides of the trapezoidal thread sleeve; the two T-shaped connecting blocks of the upper arm lifting frame are respectively inserted into the T-shaped slots of the two columns at the rear of the frame;

The upper arm has a square tube structure, with a trapezoidal cross-section at the front and a T-shaped connecting block at the rear. There is a lock pin hole in the middle of the top surface of the T-shaped connecting block of the upper arm; the T-shaped connecting blocks of the two upper arms are inserted into each other respectively. Connected to the T-shaped slot of the upper arm lifting frame; the locking pin can be passed through the locking hole of the upper arm lifting frame and then inserted into the locking pin hole of the upper arm to secure the upper arm;

The upper arm lifting frame and the lower arm lifting frame are connected together through a screw rod. The upper part of the screw rod is provided with a trapezoidal thread. The trapezoidal thread is connected to the trapezoidal thread sleeve of the upper arm bracket. The lower part of the screw rod is plugged into the wire of the ear plate of the lower arm bracket. In the rod support hole; the top of the screw rod is connected with a handle; the trapezoidal thread on the upper part of the screw rod is connected with a locking nut, and an annular operating handle is provided around the locking nut;

The hydraulic jack is fixedly connected to the middle opening at the rear of the frame, and the output end of the hydraulic jack is connected to the vertical plate box of the lower arm lifting frame.

Preferably, the screw rod is provided with a retaining ring groove, the retaining ring of the screw rod is provided with a retaining ring, and the retaining ring is close to the screw rod support hole of the lug plate.

Preferably, the front side of the frame is provided with a hinged ear seat and a locking ear seat of the arm; the right end of the arm is provided with a hinge hole, the left end is provided with a long hole, and the left end of the arm is also provided with an operating handle. The hinge hole at the right end of the arm is hinged with the arm hinge ear seat at the front of the frame; the long hole at the left end of the arm can be matched with the arm locking ear seat at the front of the rack, and a pin is passed through the arm locking ear seat. And insert it into the long hole on the left end of the blocking arm to close the blocking arm.

The invention has the following beneficial effects: simple structure, low cost, convenient maintenance and management, convenient use, high reliability and good stability in the use process. The towing operation of the aircraft can be completed by using common civil aviation equipment, and the aircraft can be towed in emergency situations. Assure. The invention can be applied to aircraft nose wheels of different sizes, that is, it is suitable for different types and models of aircraft, and has good versatility.

Further features and aspects of the invention will become apparent from the following description of specific embodiments with reference to the accompanying drawings.

Description of drawings

Figure 1 is a structural perspective view of the present invention;

Figure 2 is a perspective view of the explosive structure of the present invention;

Figure 3 is a perspective view of the upper arm lifting frame of the present invention;

Figure 4 is a perspective view of the lower arm lifting frame of the present invention;

Figure 5 is a perspective view of the upper arm of the present invention;

Figure 6 is a perspective view of the lower arm of the present invention;

Figure 7 is a perspective view of the lock nut of the present invention;

Figure 8 is a perspective view of the frame of the present invention.

Explanation of symbols in the figure:

1. Frame, 1-1. Handrail, 1-2. Column, 1-2-1. T-shaped slot, 1-3. Arm hinge ear seat, 1-4. Arm locking ear seat; 2. Upper arm, 2-1. T-shaped connecting block, 2-1-1. Lock pin hole; 3. Lower arm, 3-1. T-shaped connecting block, 3-1-1. Lock pin blind hole, 3-1- 2. Threaded hole; 4. Upper arm lifting frame, 4-1. T-shaped slot, 4-2. T-shaped connecting block, 4-3. Locking hole, 4-4. Trapezoidal thread sleeve; 5. Screw rod; 6 , locking nut; 7. Lower arm lifting frame, 7-1. Transverse T-shaped slot, 7-2. T-shaped connecting block, 7-3. Vertical plate box, 7-3-1. Ear plate, 7-4 .Screw support blind hole; 8. Universal wheel; 9. Traction hook; 10. Ratchet wrench; 11. Lock pin; 12. Double-headed screw; 13. Hydraulic jack; 14. Handle; 15. Back-up ring; 16 , blocking arm, 16-1. Operating handle.

Detailed ways

The present invention will be further described in detail with specific embodiments below with reference to the accompanying drawings.

As shown in Figures 1 and 2, an aircraft emergency traction device includes a frame 1, an upper arm 2, an upper arm lifting frame 4, a lower arm 3, a lower arm lifting frame 7, a hydraulic jack 13, and a blocking arm 16. The frame 1 It is the base frame of the aircraft emergency traction device. Four universal wheels 8 are connected to the bottom of the frame 1. Towing hooks 9 are provided on the left and right sides of the middle part of the frame 1. A hydraulic jack 13 is fixed in the middle of the rear part of the frame 1. The frame 1. The front part is provided with a blocking arm 16. The lower arm lifting frame 7 is connected to the hydraulic jack 13. The lower arm lifting frame 7 and the upper arm lifting frame 4 are plugged into the same slot of the frame 1 and can move up and down in the slot. The lower arm lifting frame 7 and the upper arm lifting frame 4 pass through The screw rod 5 is connected and can adjust the height up and down; the lower arm 3 and the upper arm 2 each have two pieces, which are plugged into the slots of the upper arm lifting frame 4 and the lower arm lifting frame 7 respectively, and can move left and right in the slot respectively; the blocking arm 16 It is hinged with the frame ear seat and can rotate around the hinge axis.

As shown in Figure 8, the rack 1 has a U-shaped structure as a whole. There are two columns 1-2 arranged side by side on both sides of the rear. The middle of the rear is an open structure, and there are T's on the sides of the columns 1-2. groove 1-2-1, the left and right sides of the frame 1 are provided with traction hooks 9, the rear side of the frame 1 is provided with handrails 1-1, and the front side of the frame 1 is provided with arm hinge ear seats 1-3 and arm locking lugs 1-4.

As shown in Figure 4, the lower arm lifting frame 7 is an inverted T-shaped structure as a whole, with a transverse T-shaped slot 7-1 on the front side of the bottom, and two symmetrical T-shaped connecting blocks 7-2 on both sides of the rear side. , there is a vertical plate box 7-3 for connecting with the hydraulic jack 13 in the middle of the rear part. The front side of the vertical plate box 7-3 is provided with an ear plate 7-3-1, and the ear plate 7-3-1 is provided with a screw rod. Support hole, the middle part of the upper plane of the bottom of the lower arm lift frame 7 is provided with a screw support blind hole 7-4, and both sides of the screw support blind hole 7-4 are provided with a number of equally spaced lock pin holes 7-5. The two T-shaped connecting blocks 7-2 of the lower arm lifting frame 7 are respectively inserted into the T-shaped slots 1-2-1 of the two uprights 1-2 at the rear of the frame 1.

As shown in Figure 6, the lower arm 3 is an L-shaped square tube structure with a trapezoidal cross-section at the front and a T-shaped connecting block 3-1 at the rear. The top surface of the T-shaped connecting block 3-1 is open in the middle. There is a locking pin blind hole 3-1-1, and a threaded hole 3-1-2 is provided in the middle of the side of the T-shaped connecting block 3-1. As shown in Figures 1 and 2, the number of lower arms 3 is two. The T-shaped connecting blocks 3-1 of the two lower arms 3 are respectively inserted into the transverse T-shaped slots 7-1 of the lower arm lifting frame 7. The two lower arms 3 are slidingly connected to the lower arm lifting frame 7, and the two lower arms 3 are arranged symmetrically left and right. The threaded holes on the two lower arms 3 have opposite directions of rotation. The threaded hole 3-1-2 in the middle of the side of the T-shaped connecting block 3-1 in one of the lower arms 3 is left-handed, and the T-shaped connecting block in the other lower arm 3 has a left-hand direction. The threaded hole in the middle of the side is right-hand. The two threaded holes 3-1-2 are connected through a double-headed screw 12. One end of the double-headed screw 12 has a left-hand thread and the other end has a right-hand thread. One end of the double-headed screw 12 is connected to one of the lower arms 3 The threaded hole on the second lower arm 3 is connected and matched, and the other end of the double-head screw rod 12 is connected and matched with the threaded hole on the second lower arm 3.

As shown in Figures 1 and 2, one end of the double-head screw rod 12 is provided with a hexagonal shaft head. The ratchet wrench 10 is connected to the hexagonal shaft head. The ratchet wrench 10 is operated by external force to drive the double-head screw rod 12 to rotate. The two lower arms 3 are moved to adjust the distance between the two lower arms 3 . After adjusting the position of the lower arm 3, use the lock pin to pass through the lock pin hole 7-5 and then insert it into the lock pin blind hole 3-1-1 to achieve the fixation and positioning of the lower arm 3 and prevent the lower arm 3 from moving left and right.

As shown in Figure 3, the front side of the upper arm lifting frame 4 is provided with a T-shaped slot 4-1, and the rear side is provided with two symmetrically arranged T-shaped connecting blocks 4-2. The top surface of the upper arm lifting frame 4 is provided with equal intervals. The locking hole 4-3 is provided with a trapezoidal thread sleeve 4-4 in the middle of the top surface of the upper arm lifting frame 4. Several locking holes 4-3 are located on both sides of the trapezoidal thread sleeve 4-4. As shown in Figures 1 and 2, the two T-shaped connecting blocks 4-2 of the upper arm lifting frame 4 are respectively inserted into the T-shaped slots 1-2-1 of the two uprights 1-2 at the rear of the frame 1.

As shown in Figure 5, the upper arm 2 is a square tube structure with a trapezoidal cross-section at the front and a T-shaped connecting block 2-1 at the rear. There is a locking pin in the middle of the top surface of the T-shaped connecting block 2-1. Hole 2-1-1. As shown in Figure 1 and Figure 2, the number of upper arms 2 is two, which is a left-right symmetrical structure. The T-shaped connecting blocks 2-1 of the two upper arms 2 are respectively inserted into the T-shaped slots 4-1 of the upper arm lifting frame 4. , realizing a sliding connection between the two upper arms 2 and the upper arm lifting frame 4. The distance between the two upper arms 2 is adjustable. After the left and right distance of the two upper arms 2 is adjusted, use the lock pin 11 to pass through the lock hole 4-3 and then insert into the lock pin hole 2-1-1 to achieve the fixation and positioning of the upper arm 2 and prevent the upper arm 2 from moving left and right.

As shown in Figures 1 and 2, the upper arm lifting frame 4 and the lower arm lifting frame 7 are connected together through the screw rod 5. The upper part of the screw rod 5 is provided with a trapezoidal thread, and the trapezoidal thread is connected with the trapezoidal thread sleeve 4- of the upper arm bracket 4. 4 are connected, and the lower part of the screw rod 5 is inserted into the screw rod support hole of the ear plate 7-3-1 of the lower arm bracket 7. The screw rod 5 is provided with a retaining ring groove. The retaining ring 15 is stuck on the retaining ring groove of the screw rod 5. The retaining ring 15 is close to the screw support hole of the lug plate 7-3-1. The retaining ring 15 can prevent the screw rod 5 from being separated from the thread. Rod support hole. Since the upper arm 2 is located above the lower arm 3, the vertical distance and clamping force between the upper arm 2 and the lower arm 3 can be adjusted by rotating the screw rod 5. The handle 14 is connected to the top of the screw rod 5 (specifically, a square cylindrical structure for connecting with the handle 14 can be provided on the top of the screw rod 5), and the staff can rotate the screw rod 5 by operating the handle 14.

As shown in Figures 1, 2, and 7, the locking nut 6 is connected and matched with the trapezoidal thread on the upper part of the screw rod 5, and an annular operating handle is connected around the locking nut 6 by welding. When the locking nut 6 is tightened by external force, it can prevent the screw rod from loosening and falling off after the tire is tightened.

As shown in Figures 1 and 2, the blocking arm 16 is a long rod structure with a hinge hole at its right end, a long hole at its left end, and an operating handle 16-1 at its left end. The hinge hole at the right end of the blocking arm 16 is hinged with the hinged ear seat 1-3 of the blocking arm at the front of the frame. The long hole on the left end of the blocking arm 16 can be matched with the blocking arm locking ear seat 1-4 on the front of the frame. Use a pin to pass through the blocking arm locking ear seat 1-4 and insert it into the long hole on the left end of the blocking arm 16. , to achieve the closing of the blocking arm. When it is necessary to open the blocking arm 16, pull out the pin and pull the operating handle 16-1. Quick locking is achieved by means of quick latch.

As shown in Figures 1 and 2, the hydraulic jack 13 is fixedly installed at the middle opening at the rear of the frame 1, and the output end of the hydraulic jack 13 is connected to the vertical plate box 7-3 of the lower arm lifting frame 7.

When using the present invention, refer to Figure 1, lower the lower arm 3 to the lowest position, adjust the distance between the upper arm and the lower arm to a suitable position, open the blocking arm 16, push in from the side of the nose wheel of the aircraft, close the blocking arm 16, and shake the handle 14. Make the upper arm and lower arm clamp the tire, tighten the locking nut 6 to fix the screw rod 5, operate the hydraulic jack 13 to lift and lower the upper arm and lower arm, thereby realizing the lifting and lowering of the aircraft nose wheel, and then drive the tow bar and the aircraft tractor through the aircraft tractor. The traction hook 9 on one side of the frame is connected to realize the traction movement of the aircraft. It can be seen that the present invention has a simple structure, low cost, convenient maintenance and management, is easy to use, has high reliability and good stability in the use process. It can complete the towing operation of the aircraft by using common civil aviation equipment, and realize the aircraft support in emergency situations.

By adjusting the distance between the two lower arms in the left and right directions, and adjusting the distance between the two upper arms in the left and right directions, it can be applied to aircraft nose wheels of different sizes, that is, it can be adapted to different types and models of aircraft, and has good versatility.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the claims of the present invention shall be within the protection scope of the present invention.

Claims (3)

1. An aircraft emergency traction device, characterized by comprising a frame, an upper arm lifting frame, a lower arm lifting frame, an upper arm, a lower arm, a hydraulic jack, a ratchet wrench and a blocking arm; The overall frame is a U-shaped structure, with four universal wheels connected to the bottom, traction hooks on the left and right sides of the middle, two columns arranged side by side on both sides of the rear, and an open structure in the middle of the rear. The side of the column is provided with a T-shaped slot; the rear side of the frame is provided with an armrest; The blocking arm is connected to the front side of the frame, and the blocking arm can be opened and closed; The lower arm lifting frame is an inverted T-shaped structure as a whole, with a transverse T-shaped slot on the front side of the bottom, a vertical plate box in the middle of the rear, and two symmetrical sides on both sides of the rear side of the lower arm lifting frame. T-shaped connecting block, the front side of the vertical plate box is provided with an ear plate, the ear plate is provided with a screw support hole, and the middle part of the upper plane of the bottom of the lower arm lifting frame is provided with a screw support blind hole, A number of equally spaced lock pin holes are provided on both sides of the blind hole of the screw rod support; the two T-shaped connecting blocks of the lower arm lifting frame are respectively inserted into the T-shaped slots of the two columns at the rear of the frame; The lower arm has an L-shaped square tube structure, with a trapezoidal cross-section at the front and a T-shaped connecting block at the rear. There is a blind locking hole in the middle of the top surface of the T-shaped connecting block of the lower arm, so There is a threaded hole in the middle of the side of the T-shaped connecting block of the lower arm; the T-shaped connecting blocks of the two lower arms are respectively inserted into the transverse T-shaped slots of the lower arm lifting frame, and the two lower arms are symmetrically arranged left and right; two The threaded holes on the lower arm have opposite directions of rotation, and the two threaded holes are connected through a double-head screw rod; the ratchet wrench is connected to the end of the double-head screw rod; a lock pin can be used to pass through the lock of the lower arm lifting frame. Insert the pin hole into the blind hole of the lock pin on the lower arm to secure the lower arm; The front side of the upper arm lifting frame is provided with a T-shaped slot, the rear side is provided with two symmetrically arranged T-shaped connecting blocks, the top surface is provided with a number of equally spaced locking holes, and the middle part of the top surface of the upper arm lifting frame is provided with a T-shaped slot. There is a trapezoidal thread sleeve, and the plurality of locking holes are located on both sides of the trapezoidal thread sleeve; the two T-shaped connecting blocks of the upper arm lifting frame are respectively inserted into the T-shaped slots of the two uprights at the rear of the frame; The upper arm is a square tube structure with a trapezoidal cross-section at the front and a T-shaped connecting block at the rear. There is a lock pin hole in the middle of the top surface of the T-shaped connecting block of the upper arm; the T-shaped two upper arms The connecting blocks are respectively inserted into the T-shaped slots of the upper arm lifting frame; the locking pin can be passed through the locking hole of the upper arm lifting frame and then inserted into the locking pin hole of the upper arm to achieve the fixation of the upper arm; The upper arm lifting frame and the lower arm lifting frame are connected together through a screw rod. The upper part of the screw rod is provided with a trapezoidal thread. The trapezoidal thread is connected to the trapezoidal thread sleeve of the upper arm bracket. The lower part of the screw rod is inserted into Connected to the screw rod support hole of the ear plate of the lower arm bracket; the top of the screw rod is connected with a handle; the trapezoidal thread on the upper part of the screw rod is connected with a locking nut, and an annular operation is provided around the locking nut handle; The hydraulic jack is fixedly connected to the middle opening at the rear of the frame, and the output end of the hydraulic jack is connected to the vertical plate box of the lower arm lifting frame. 2. The aircraft emergency traction device according to claim 1, characterized in that the screw rod is provided with a retaining ring groove, the retaining ring groove of the screw rod is provided with a retaining ring, and the retaining ring is close to the screw support of the lug plate. hole. 3. The aircraft emergency traction device according to claim 1, wherein the front side of the frame is provided with a hinged ear seat and a locking ear seat of the arm; and a hinge hole is provided at the right end of the arm. , a long hole is provided at the left end, and an operating handle is also provided at the left end of the blocking arm. The hinge hole at the right end of the blocking arm is hinged with the hinged ear seat of the blocking arm at the front of the frame; the long hole at the left end of the blocking arm It can be matched with the arm locking ear seat at the front of the frame. Use a pin to pass through the arm locking ear seat and insert it into the long hole on the left end of the arm to close the arm.