General dragging device for aircraft maintenance ladder assembly

Abstract

The utility model provides a general dragging device for an aircraft maintenance ladder assembly, which relates to the technical field of maintenance ladder assembly dragging and comprises a support plate, a traction frame hinged to one side of the support plate, a group of rollers mounted at corners of the bottom of the support plate, and a group of lifting mechanisms mounted above the support plate. Two vertical stabilizing rods are arranged above the supporting plate and are each of a cylindrical structure, and two vertical sliding holes are formed in one side of the lifting plate. According to the dragging device for the aircraft maintenance ladder assembly, the lifting plate and the clamping plate are arranged to achieve one clamping step of the aircraft maintenance ladder assembly, the clamping frame is arranged to achieve another clamping step of the aircraft maintenance ladder assembly, after the aircraft maintenance ladder is clamped, one side of the aircraft maintenance ladder is lifted, the aircraft maintenance ladder assembly can be flexibly dragged by means of the dragging machine, and the universality and the butt joint convenience effect of the dragging device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to maintenance ladder frame dragging technology field especially relates to a general dragging device of airplane maintenance ladder frame. BACKGROUND

[0002] In the field of aviation maintenance, airplane maintenance ladder frame is an indispensable important tool, which is used for assisting maintenance personnel to reach the specific part of the airplane to carry out overhaul, maintenance and maintenance work, with the continuous development of aviation industry, the type and quantity of airplanes are increasing, higher requirements are put forward for the use frequency and efficiency of the maintenance ladder frame, however, the dragging and carrying work of the current airplane maintenance ladder frame faces many challenges and problems, mainly reflected in the following aspects:

[0003] In the large area operation area such as airport, the ladder frame is often needed to be moved from one maintenance position to another position, which needs the cooperation of multiple workers, the labor intensity is big, and the ladder frame is easily damaged due to human factors, which affects the service life of the ladder frame and the normal progress of the maintenance work;

[0004] Different types of airplanes have different structures and maintenance requirements, and the corresponding maintenance ladder frames also have different sizes, shapes and specifications, the existing dragging device is mostly designed for a specific type of ladder frame, and lacks universality, when different specifications of ladder frames need to be dragged, different dragging equipment needs to be replaced, which not only increases the equipment cost, but also reduces the work efficiency, and brings great inconvenience to the maintenance work. UTILITY MODEL CONTENTS

[0005] The utility model discloses a general dragging device of airplane maintenance ladder frame, and an operator pushes the device close to the airplane maintenance ladder frame, makes the horizontal pole at the bottom of the airplane maintenance ladder frame between the two locking frames, the operator holds the locking frame with hand, turns it clockwise until the recess of the locking frame is engaged with the locking tooth of the clamping frame, and the locking frame is stably clamped with the horizontal pole in cooperation with the V-shaped clamping groove in the inner side of the clamping frame.

[0006] The first aspect of the present disclosure provides a general dragging device of airplane maintenance ladder frame, specifically comprising: a support plate, a traction frame hinged on one side of the support plate, a group of rollers installed at the corner position at the bottom of the support plate, a group of lifting mechanisms installed above the support plate, the lifting mechanism comprising a lifting plate, two vertical stable rods provided above the support plate, the stable rod being a cylindrical structure, two vertical sliding holes opened on one side of the lifting plate, the stable rod penetrating the inside of the sliding hole, two clamping plates installed at the inner side of the lifting plate, the bottom of the clamping plate slightly contacting the inner wall of the lifting plate, two symmetrical positioning plates provided on one side of the lifting plate, and a group of butt joint structures respectively installed on one side of the positioning plate.

[0007] Further, the lifting mechanism is composed of a threaded rod, a sliding block, a movable plate, a lifting plate and a positioning plate, the threaded rod is a bidirectional threaded structure, two symmetrically distributed sliding blocks are installed on the outer side of the threaded rod, a threaded hole is formed in the middle position of the sliding block, the threaded holes of the two sliding blocks are opposite in screw direction, two sliding grooves are formed in the middle position of the support plate, the sliding grooves are T-shaped structures, a limiting block is arranged at the bottom position of the sliding block, and the bottom position of the sliding block is installed in the inner part of the sliding groove.

[0008] Further, a rotating hole is formed in the middle position above the support plate, the threaded rod penetrates the inner part of the rotating hole, a positioning groove is formed in the middle position of the threaded rod, the positioning groove is a circular ring structure, and a positioning bolt is installed on the basis of the rotating hole and the positioning groove.

[0009] Further, an installation hole is formed in the upper position of the sliding block, a rotating hole is formed in the upper and lower positions of the movable plate, a group of positioning ear plates are arranged at the bottom of the lifting plate on both sides, two up-and-down distributed pin shafts are installed between the positioning ear plates, the installation hole and the rotating hole.

[0010] Further, the butt joint structure is composed of a clamping frame, a locking frame and a positioning rod, a pin shaft is installed on one side of the positioning plate, a rotating hole is formed in the bottom position of one side of the clamping frame, and the pin shaft penetrates the inner part of the rotating hole.

[0011] Further, a group of locking teeth are arranged on the other side of the clamping frame, the locking teeth are one-way inclined surface limiting structures, a group of grooves corresponding to the locking teeth are formed in one side of the locking frame, one side of the locking frame is engaged with the locking teeth, a clamping groove is formed in the inner side position of the clamping frame, and the clamping groove is a V-shaped structure.

[0012] Further, a positioning rod is arranged on one side of the locking frame, a sliding groove is formed in one side of the positioning plate, the positioning rod is installed in the inner part of the sliding groove, a sliding hole is formed in the middle position of the positioning rod, a positioning bolt in threaded connection with the positioning plate is installed in the inner part of the sliding hole, and a supporting spring is installed on the outer side of the positioning rod.

[0013] Further, a group of friction blocks are arranged on one side of the locking frame, and the friction blocks are circular arc structures.

[0014] Further, the clamping plate comprises an adjusting bolt, a rotating hole is formed in the middle position of the clamping plate, a threaded hole is formed in the two sides of the lifting plate, the adjusting bolt is in threaded connection with the threaded hole, the adjusting bolt is installed in the inner part of the rotating hole on one side, a positioning groove is formed in one side of the adjusting bolt, the positioning groove is a circular ring structure, a positioning bolt is installed above the clamping plate, and the bottom of the positioning bolt extends to the inner side position of the positioning groove.

[0015] The utility model provides a kind of aircraft maintenance ladder frame general towing device, with following beneficial effects:

[0016] The lifting mechanism composed according to the slider-crank principle is arranged to flexibly drive the lifting plate to lift and lower.

[0017] The rotating adjusting bolt can control the transverse movement of the clamping plate, easily adjust the spacing between the two clamping plates, and the clamping plate can stably lift one side of the aircraft maintenance ladder frame.

[0018] The clamping frame can flexibly rotate relative to the positioning plate, which is convenient for adjusting the clamping angle to adapt to aircraft maintenance ladder crossbars of different shapes and sizes, which enhances the universality and applicability of the device and can meet the towing needs of various types of ladder frames.

[0019] The locking teeth of the one-way inclined surface limiting structure are engaged with the grooves of the locking frame, providing reliable automatic one-way locking function.

[0020] The lifting plate and the clamping plate realize a clamping step of the aircraft maintenance ladder frame, the clamping frame realizes another clamping step of the aircraft maintenance ladder frame, and after the aircraft maintenance ladder is clamped, one side is lifted, and the aircraft maintenance ladder frame can be flexibly towed by the towing machine, improving the universality and docking convenience of the towing device. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings of the embodiments.

[0022] The drawings described in the following description only relate to some embodiments of the utility model, and are not limited to the utility model.

[0023] In the drawings:

[0024] Figure 1 The axial side structure schematic diagram of the lifting plate after lifting of the present application is shown.

[0025] Figure 2 The axial side structure schematic diagram of the lifting plate after lifting of the present application is shown.

[0026] Figure 3 The axial side schematic diagram of the cutting structure of the lifting plate and the clamping plate of the present application is shown.

[0027] Figure 4 The main view schematic diagram of the cutting structure of the lifting plate after storage of the present application is shown.

[0028] Figure 5 The application is shown in Figure 2 the bottom view of the axial side structure of the application;

[0029] Figure 6 The application is shown in the axial side structure diagram of the support plate cut structure;

[0030] Figure 7 The application is shown in the axial side structure diagram of the docking structure.

[0031] List of reference signs

[0032] 1, support plate; 101, traction frame;

[0033] 2, lifting mechanism; 201, threaded rod; 202, sliding block; 203, movable plate; 204, lifting plate; 205, positioning plate;

[0034] 3, clamping plate; 301, adjusting bolt;

[0035] 4, docking structure; 401, clamping frame; 402, locking frame; 403, positioning rod. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Embodiment one: please refer to Figures 1 to 7 :

[0038] The utility model provides a kind of airplane maintenance ladder frame general towing device, comprising: support plate 1, the traction frame 101 of one side hinged of support plate 1, a set of gyro wheel is installed in the corner position of the bottom of support plate 1, a set of lifting mechanism 2 is installed in the position above support plate 1, lifting mechanism 2 is jointly composed of threaded rod 201, sliding block 202, movable plate 203, lifting plate 204 and positioning plate 205, threaded rod 201 is two-way screw structure, two symmetrical distribution sliding blocks 202 are installed in the outside position of threaded rod 201, a threaded hole is opened in the middle position of sliding block 202, the threaded hole of two sliding blocks 202 is opposite in spiral direction, two sliding grooves are opened in the middle position of support plate 1, sliding groove is T-shaped structure, a limit block is equipped in the bottom position of sliding block 202, the bottom position of sliding block 202 is installed in the inside of sliding groove, draw a conclusion, sliding block 202 slides in T-shaped sliding groove, limit block prevents it from coming out, ensure that the moving process is stable, threaded transmission mode makes force transmission direct, can effectively convert rotary motion into the linear motion of sliding block 202, threaded rod 201 of two-way screw structure and sliding block 202 of opposite spiral direction cooperate, two sliding blocks 202 can be synchronously reversed when rotating threaded rod 201 Move;

[0039] In the embodiment of the present disclosure, as shown in Figures 1 to 7 The upper side of support plate 1 is provided with two vertical stable rods, the stable rod is a cylindrical structure, two vertical sliding holes are opened in one side of lifting plate 204, the stable rod passes through the inside of sliding hole, two stable rods cooperate to realize the effect of horizontal, circumferential positioning of lifting plate 204, so that lifting plate 204 can be stably vertically lifted;

[0040] In the embodiment of the present disclosure, as shown in Figures 1 to 7As shown, the upper position of the sliding block 202 is provided with a mounting hole, the upper and lower positions of the movable plate 203 are respectively provided with a rotating hole, the bottom of the lifting plate 204 is provided with a group of positioning ear plates at both sides, the positioning ear plates, the mounting hole and the rotating hole are provided with two up and down distributed pin shafts, the pin shafts realize the effect of the movable connection between the sliding block 202, the movable plate 203 and the lifting plate 204 after installation, according to the lifting structure principle in the crank slider, it is concluded that the pin shaft connection makes the sliding block 202, the movable plate 203 and the lifting plate 204 connect stably, the sliding block 202 drives the movable plate 203 to swing vertically when moving, the movable plate 203 can control the lifting plate 204 to lift in the swinging process, two clamping plates 3 are installed at the inner side of the lifting plate 204;

[0041] In the embodiment of the present disclosure, reference is made to Figures 1 to 7 As shown, the clamping plate 3 includes an adjusting bolt 301, the middle position of the clamping plate 3 is provided with a rotating hole, the two sides of the lifting plate 204 are respectively provided with a threaded hole, the adjusting bolt 301 is screwed with the threaded hole, one side of the adjusting bolt 301 is installed in the inside of the rotating hole, one side of the adjusting bolt 301 is provided with a positioning groove, the positioning groove is a circular ring structure, a positioning bolt is installed at the upper position of the clamping plate 3, the bottom of the positioning bolt extends to the inside of the positioning groove, it is concluded that the operator rotates the adjusting bolt 301 to control the transverse movement of the clamping plate 3, and the adjusting bolt 301 can conveniently adjust the distance between the two clamping plates 3, the two clamping plates 3 cooperate to realize the effect of stable clamping of the stepping plate at the bottom of the machine maintenance ladder frame, at this time, the lifting mechanism 2 can be controlled to lift the stepping plate flexibly, at the same time, the moving traction frame 101 can flexibly tow the airplane maintenance ladder frame;

[0042] In the embodiment of the present disclosure, reference is made to Figures 1 to 7As shown, the bottom of the clamping plate 3 and the inner wall of the lifting plate 204 are in slight contact, one side of the lifting plate 204 is provided with two symmetrical positioning plates 205, one side of the positioning plate 205 is respectively provided with a set of butt joint structures 4, the butt joint structure 4 is composed of a clamping frame 401, a locking frame 402 and a positioning rod 403, one side of the positioning plate 205 is provided with a pin shaft, one side of the clamping frame 401 is provided with a rotating hole at the bottom position, the pin shaft passes through the inside of the rotating hole, the pin shaft passes through the rotating hole, the clamping frame 401 is flexibly rotated relative to the positioning plate 205, which is convenient for adjusting the clamping angle of the clamping frame 401 to adapt to different working scenes, the other side of the clamping frame 401 is provided with a set of locking teeth, the locking teeth are one-way inclined surface limiting structures, one side of the locking frame 402 is provided with a set of grooves corresponding to the locking teeth, one side of the locking frame 402 is engaged with the locking teeth, it is concluded that the locking teeth of the one-way inclined surface limiting structure are engaged with the grooves of the locking frame 402, which can provide reliable automatic one-way locking of the locking frame 402, a clamping groove is provided at the inner side position of the clamping frame 401, the clamping groove is a V-shaped structure, the horizontal rod at the bottom of the aircraft maintenance ladder frame is moved between the two locking frames 402, at this time the operator turns the locking frame 402 clockwise until the locking frame 402 stably clamps the horizontal rod in cooperation with the clamping groove, since the locking frame 402 is automatically one-way locked, the moving traction frame 101 can flexibly pull the aircraft maintenance ladder frame;

[0043] In the embodiments of the present disclosure, reference is made to Figures 1 to 7 As shown, one side of the locking frame 402 is provided with a positioning rod 403, one side of the positioning plate 205 is provided with a sliding groove, the positioning rod 403 is installed in the inside of the sliding groove, a sliding hole is provided at the middle position of the positioning rod 403, a positioning bolt is installed in the inside of the sliding hole, the positioning bolt is threadedly connected with the positioning plate 205, a supporting spring is installed at the outside of the positioning rod 403, it is concluded that the supporting spring provides elastic support for the positioning rod 403, buffers the impact force in the locking process, the elastic force of the supporting spring makes the locking frame 402 and the clamping frame 401 closely engaged, the positioning rod 403 slides in the sliding groove, combined with the threaded connection of the positioning bolt and the positioning plate 205, the position of the locking frame 402 can be accurately adjusted to ensure that the locking teeth are accurately engaged with the clamping frame 401, one side of the locking frame 402 is provided with a set of friction blocks, the friction blocks are circular arc structures, the operator pushes and pulls the locking frame 402 by means of the force of the fingers, at this time the locking frame 402 moves reversely under stress, at this time the operator rotates the clamping frame 401 counterclockwise to complete the separation of the pulling device and the aircraft maintenance ladder frame.

[0044] In the embodiments of the present disclosure, reference is made to Figures 1 to 7 As shown, one side of the traction frame 101 is provided with a butt joint hole, a pin shaft is installed between the butt joint hole and a pulling machine in the prior art, the pulling machine is used to run the aircraft maintenance ladder frame.

[0045] Example three, on the basis of example one, reference Figures 1 to 7 As shown in the drawings, the support plate 1, the traction frame 101, the threaded rod 201, the sliding block 202, the movable plate 203, the lifting plate 204, the positioning plate 205, the clamping plate 3, the adjusting bolt 301, the clamping frame 401, the locking frame 402, and the positioning rod 403 cooperate to form the general towing device for the aircraft maintenance ladder stand.

[0046] The working principle of the embodiment is as follows:

[0047] The docking towing machine step: the operator aligns the docking hole on one side of the traction frame 101 with the docking position of the towing machine, and uses the pin shaft to pass through the docking hole and the corresponding part of the towing machine to complete the connection between the towing machine and the traction frame 101.

[0048] The clamping aircraft maintenance ladder stand crossbar step: the operator pushes the device close to the aircraft maintenance ladder stand, so that the crossbar at the bottom of the aircraft maintenance ladder stand is located between the two locking frames 402. The operator holds the locking frame 402 with his hand and flips it clockwise until the groove of the locking frame 402 meshes with the locking tooth of the clamping frame 401. At the same time, the locking frame 402 cooperates with the V-shaped clamping groove on the inner side of the clamping frame 401 to stably clamp the crossbar.

[0049] The clamping aircraft maintenance ladder stand stepping plate step: the operator moves the stepping plate to the inside of the lifting plate 204, and rotates the adjusting bolt 301 on both sides of the lifting plate 204. According to the width of the stepping plate at the bottom of the aircraft maintenance ladder stand, the distance between the two clamping plates 3 is adjusted so that the two clamping plates 3 cooperate with each other to stably clamp the stepping plate.

[0050] The lifting aircraft maintenance ladder stand step: the operator rotates the threaded rod 201 in the middle rotating hole above the support plate 1. The bidirectional threaded structure of the threaded rod 201 cooperates with the sliding block 202 with opposite screw directions to drive the movable plate 203 to vertically swing. The movable plate 203 controls the lifting plate 204 to vertically rise along the stable rod, thereby lifting the aircraft maintenance ladder stand.

[0051] The towing aircraft maintenance ladder stand step: the operator starts the towing machine, and moves the entire device through the traction frame 101 to realize flexible towing of the aircraft maintenance ladder stand.

[0052] The separation step of the towing device and the aircraft maintenance ladder stand: after reaching the destination, the operator stops the towing machine. The operator pushes and pulls the friction block on one side of the locking frame 402 with his fingers to reversely move the locking frame 402 under stress, thereby disengaging the meshing of the locking tooth and the groove. The clamping frame 401 is counterclockwise rotated to release the clamping of the clamping frame 401 and the locking frame 402 on the crossbar. The pin shaft connecting the towing machine and the traction frame 101 is pulled out, and the separation of the towing device and the aircraft maintenance ladder stand is completed.

[0053] In this article, the following points need to be noted:

[0054] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0055] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0056] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An aircraft maintenance stand universal tow device comprising: Supporting plate (1), lifting mechanism (2) and butt joint structure (4), one side of the supporting plate (1) is hinged to a traction frame (101), a set of rollers are installed at the bottom of the supporting plate (1) at the corner, characterized in that a set of lifting mechanisms (2) are installed above the supporting plate (1), the lifting mechanism (2) comprises a lifting plate (204), two vertical stabilizing rods are arranged above the supporting plate (1), the stabilizing rods are in cylindrical structure, two vertical sliding holes are formed in one side of the lifting plate (204), the stabilizing rods pass through the inside of the sliding holes, two clamping plates (3) are installed at the inner side of the lifting plate (204), the bottom of the clamping plate (3) slightly contacts with the inner wall of the lifting plate (204), two symmetrical positioning plates (205) are arranged on one side of the lifting plate (204), and a set of butt joint structures (4) are respectively installed on one side of the positioning plate (205).

2. The universal towing device for aircraft maintenance ladders according to claim 1, characterized in that, the lifting mechanism (2) is composed of a threaded rod (201), a sliding block (202), a movable plate (203), a lifting plate (204) and a positioning plate (205), the threaded rod (201) is a bidirectional threaded structure, two symmetrical sliding blocks (202) are installed at the outer side of the threaded rod (201), a threaded hole is formed in the middle of the sliding block (202), the threaded holes of the two sliding blocks (202) are in opposite screw directions, two sliding grooves are formed in the middle of the supporting plate (1), a limiting block is arranged at the bottom of the sliding block (202), and the bottom of the sliding block (202) is installed in the inside of the sliding groove.

3. The universal towing device for aircraft maintenance ladders according to claim 2, characterized in that, a rotating hole is formed in the middle above the supporting plate (1), the threaded rod (201) passes through the inside of the rotating hole, a positioning groove is formed in the middle of the threaded rod (201), the positioning groove is in circular ring structure, and a positioning bolt is installed on the basis of the rotating hole and the positioning groove.

4. The universal towing device for aircraft maintenance ladders according to claim 2, characterized in that, an installation hole is formed above the sliding block (202), rotating holes are respectively formed above and below the movable plate (203), a set of positioning ear plates are arranged at the bottom of the lifting plate (204) on both sides, two upper and lower distribution pin shafts are installed between the positioning ear plates, the installation hole and the rotating holes.

5. The universal towing device for aircraft maintenance ladders according to claim 1, characterized in that, the butt joint structure (4) is composed of a clamping frame (401), a locking frame (402) and a positioning rod (403), a pin shaft is installed on one side of the positioning plate (205), a rotating hole is formed at the bottom of one side of the clamping frame (401), and the pin shaft passes through the inside of the rotating hole.

6. The universal towing device for aircraft maintenance ladders according to claim 5, characterized in that, The other side of the clamping frame (401) is provided with a set of locking teeth, the locking teeth are one-way inclined surface limiting structure, one side of the locking frame (402) is provided with a set of corresponding grooves, one side of the locking frame (402) is engaged with the locking teeth, the inner side of the clamping frame (401) is provided with a clamping groove.

7. The aircraft maintenance ladder universal towing device according to claim 5, wherein, One side of the locking frame (402) is provided with a positioning rod (403), one side of the positioning plate (205) is provided with a sliding groove, the positioning rod (403) is installed in the sliding groove, a sliding hole is formed in the middle position of the positioning rod (403), a positioning bolt is installed in the sliding hole, the positioning bolt is screw connected with the positioning plate (205), a supporting spring is installed on the outside of the positioning rod (403).

8. The aircraft maintenance ladder universal towing device according to claim 5, wherein, One side of the locking frame (402) is provided with a set of friction blocks.

9. The aircraft maintenance ladder universal towing device according to claim 1, wherein, The clamping plate (3) comprises an adjusting bolt (301), a rotating hole is formed in the middle position of the clamping plate (3), a threaded hole is formed in the two sides of the lifting plate (204), the adjusting bolt (301) is screw connected with the threaded hole, one side of the adjusting bolt (301) is installed in the rotating hole, a positioning slot is formed in one side of the adjusting bolt (301), the positioning slot is circular ring structure, a positioning bolt is installed above the clamping plate (3), the bottom of the positioning bolt extends to the inner side of the positioning slot.

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