A wheel holding device based on electromagnetic spring

Abstract

The present invention provides a wheel-holding device based on an electromagnetic spring, comprising a first wheel-holding body and a second wheel-holding body, wherein the first wheel-holding body comprises a traction fixing plate, an upper part of the traction fixing plate, a first clamping body, and a lower part of the traction fixing plate, the traction fixing plate is fixed on a tractor, the upper part of the traction fixing plate and the lower part of the traction fixing plate are both welded to the traction fixing plate, and the lower part of the traction fixing plate is rotatably connected with the first clamping body through a loose-leaf; the second wheel-holding body comprises a right part of a second clamping body and a left part of a second clamping body, wherein the right part of the second clamping body comprises a clamping bracket, an iron block, a first electromagnet, and a second electromagnet, the first electromagnet is attracted to realize the lateral opening and closing of the cabin door, and the second electromagnet is attracted to realize the clamping of the front wheel of the aircraft. The present invention fixes the front wheel of the aircraft 360°, increases the contact area, is reliable, and has a more uniform force. The electromagnetic spring wheel-holding method replaces the hydraulic drive, omitting components such as hydraulic cylinders and hydraulic pipelines, making the wheel-holding device simpler, and solving safety hazards such as oil leakage and pressure relief.

Description

Technical Field

[0001] The invention belongs to the technical field of special equipment for aviation special vehicles and relates to an electromagnet spring type wheel holding device used for the wheel holding device of an aircraft traction device. Background Art

[0002] Aircraft tractors are special ground vehicles used to tow aircraft on the airport ground, and have the characteristics of low center of mass and large traction. Existing aircraft tractors use a set of clamping and lifting mechanisms to clamp the front landing gear wheels of the aircraft, and then the front landing gear wheels are carried on the tractor for travel, which has the advantages of flexible steering and small turning radius.

[0003] A Chinese utility model patent with authorization announcement number CN205525030U and authorization announcement date 2016.08.31 discloses an aircraft towing intelligent robot, which includes a driving system, a braking system and a clamping and lifting system. The clamping and lifting system includes a downward pressure baffle, an automatic door, a sliding platform and a lifting platform. The lifting platform has a lifting arm extending along the front and rear directions of the aircraft tractor. The lifting platform is installed on the device body through an articulated seat. One end of the downward pressure baffle is hinged to the lifting platform, and the other end is hinged to the clamping component. The height and width of the downward pressure baffle are adjustable. A front baffle for supporting the front wheels of the aircraft is provided on the lifting arm. The sliding platform can slide along the front and rear directions. The automatic door is installed on the lifting arm and driven by the automatic door cylinder. The Chinese utility model patent with the authorization announcement number CN201820007871 and the authorization announcement date 2018.08.10 discloses an aircraft tractor and a wheel holding mechanism, which includes a lifter, a lifting arm, a front stopper, a rear stopper, a locking surface and a locking member. The lifting frame has a lifting arm extending along the front and rear directions of the aircraft tractor, and the lifting arm is provided with a front stopper and a rear stopper, and the rear side surface of the rear stopper has an inclined locking surface, and the front end of the locking surface is inclined toward the middle of the rear stopper.

[0004] When the above-mentioned aircraft traction wheel-holding device is in use, it can fix the front wheel of the aircraft from the top, front and rear directions by hydraulic drive, and lift the front wheel of the aircraft by hydraulic device, and then be carried on the tractor for driving. However, the above-mentioned wheel-holding device will have the following disadvantages when used in the process of aircraft traction: 1. Since it adopts three-point fixation from three directions, the fixing method has a small contact area with the front wheel of the aircraft, which has great limitations. For example, if the hydraulic pressure is too small, it will cause the three-point fixation to be unstable, which will easily cause the fixed wheel of the front landing gear of the aircraft to shake, affecting the stability of the aircraft traction; if the hydraulic pressure is too large, it will cause uneven force on the front wheel of the aircraft, affecting the tire pressure inside the front wheel and shortening the service life of the front wheel of the aircraft. 2. The use of hydraulic drive requires more hydraulic cylinders and their hydraulic pipelines. The entire wheel-holding device is too complicated, which affects the aesthetics of the wheel-holding device. After long-term use, the oil cylinder itself will have problems such as oil leakage and pressure relief. In severe cases, it will cause the driving oil cylinder to lose its force and cause a safety accident, which poses a safety hazard. Summary of the invention

[0005] In view of the shortcomings and defects of the above-mentioned prior art, the purpose of the present invention is to provide a wheel-holding device based on an electromagnetic spring, which can be fixed in all directions at 360°, increase the contact area with the front wheel of the aircraft, and fix more firmly, solving the problem of uneven clamping force of the front wheel of the aircraft. At the same time, the present invention adopts an electromagnetic spring wheel-holding method instead of hydraulic drive, eliminating components such as hydraulic cylinders and hydraulic pipelines, and solving safety hazards such as oil leakage and pressure relief.

[0006] In order to solve the above technical problems, this application adopts the following technical solutions:

[0007] A wheel holding device based on an electromagnetic spring type comprises a first wheel holding body and a second wheel holding body;

[0008] The first wheel-holding body comprises a traction fixing plate, an upper portion of the traction fixing plate, an upper portion of a clamping body, and a lower portion of a traction fixing device, wherein the traction fixing device is fixedly connected to the tractor, the upper portion of the traction fixing plate and the lower portion of the traction fixing plate are both welded to the traction fixing plate, and the lower portion of the traction fixing plate is rotatably connected to the upper portion of the clamping body through a hinge;

[0009] The first clamping body comprises a clamping body upper part, a guide groove, a rotation spring, a matching rod, and a clamping body lower part, wherein the guide groove is provided inside the clamping body upper part, and the matching rod is rotatably connected to the clamping body upper part through the rotation spring;

[0010] The lower part of the clamping body is provided with a sliding track, which allows the upper part of the clamping body to slide longitudinally upward;

[0011] The second wheel-holding body comprises a second clamping body right part and a second clamping body left part, and the second clamping body right part and the second clamping body left part have the same structure;

[0012] The right part of the second clamping body includes a clamping bracket, an iron block, a first electromagnet, and a second electromagnet, wherein the second electromagnet is connected to an electromagnetic power line and is welded to the lower part of the clamping body;

[0013] The iron block is provided with an upper movement groove and a lower movement groove inside and is welded to the clamping bracket;

[0014] The second electromagnet includes a guide rail, a spring mounting hole, an electromagnet left side, and an electromagnet right side. The guide rail is slidably matched with the upper movement slot and the lower movement slot. The electromagnet left side or the electromagnet right side is connected to an electromagnetic power line.

[0015] The present invention also has the following technical features:

[0016] The clamping body upper part, the clamping body lower part and the clamping bracket can form a 360° fully enclosed connection.

[0017] The upper portion of the traction fixing plate is provided with an outer groove and an inner groove of the matching groove, which are slidably connected with the matching rod. The matching rod can slide from the outer groove of the matching groove to the inner groove of the matching groove under the action of force.

[0018] A spring is connected between the second electromagnet and the first electromagnet, and the machine wheel is clamped by the combination of the electromagnet and the spring.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] (I) 360° all-round fixation increases the contact area with the aircraft's front wheels, making the fixation more reliable and the force on the aircraft's front wheels more even.

[0021] (II) The electromagnetic spring wheel holding method replaces the hydraulic drive, eliminating components such as hydraulic cylinders and hydraulic pipes. The wheel holding device is simpler and there are no safety hazards such as oil leakage and pressure relief.

[0022] (III) Since the electromagnet can realize its wheel holding function only by controlling the on and off of power, it is easy to realize automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional general diagram of the electromagnetic spring-type wheel holding device;

[0024] Figure 2 This is the structural diagram of the first wheel holding body;

[0025] Figure 3 This is the structural diagram of the second wheel-holding body;

[0026] Figure 4 It is a diagram of the upper structure of the traction fixture;

[0027] Figure 5It is the structural diagram of the matching rod;

[0028] Figure 6 is a structural diagram of a first electromagnet;

[0029] Figure 7 This is the structure diagram of the first iron block;

[0030] Figure 8 It is a structural diagram of the second electromagnet.

[0031] The meanings of the numbers in the figure are: 1-first wheel holding body, 2-second wheel holding body;

[0032] 11-first clamping body, 21-left part of second clamping body, 22-right part of second clamping body;

[0033] 101-traction fixing plate 102.-upper part of traction fixing plate, 103-matching rod, 104-upper part of clamping body, 105-guide groove, 106-loose leaf, 107-lower part of traction fixing plate, 108-lower part of clamping body;

[0034] 1021-matching groove inner groove, 1022-matching groove outer groove, 1031-rotation spring;

[0035] 201-clamping bracket, 202-iron block, 203-first electromagnet, 204-second electromagnet;

[0036] 2021-upper movement slot, 2022-lower movement slot, 2031-left side of the electromagnet, 2032-guide rail, 2033-right side of the electromagnet 2034-spring mounting hole, 2041-spring.

[0037] The specific contents of the present invention are further explained in detail below in conjunction with the drawings and embodiments. DETAILED DESCRIPTION

[0038] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0039] Embodiment 1:

[0040] In accordance with the above technical solution, this embodiment provides a wheel holding device based on an electromagnetic spring type, such as Figures 1 to 8 As shown, it includes a first wheel holding body 1 and a second wheel holding body 2;

[0041] The first wheel-holding body 1 comprises a traction fixing plate 101, an upper traction fixing plate 102, an upper clamping body 104, and a lower traction fixing device 107. The traction fixing device 101 is fixedly connected to the tractor. The upper traction fixing plate 102 and the lower traction fixing plate 107 are both welded to the traction fixing plate 101, and the lower traction fixing plate 107 is rotatably connected to the upper clamping body 104 via a hinge 106.

[0042] The first clamping body 11 includes a clamping body upper portion 104, a guide groove 105, a rotation spring 1031, a matching rod 103, and a clamping body lower portion 108. The guide groove 105 is provided inside the first clamping body 104. The matching rod 103 is rotatably connected to the clamping body upper portion 104 through the rotation spring 1031.

[0043] The lower part 108 of the clamping body is provided with a sliding track, which allows the upper part 104 of the clamping body to slide longitudinally thereon;

[0044] The second wheel-holding body 2 comprises a second clamping body right part 22 and a second clamping body left part 21, and the second clamping body right part 22 and the second clamping body left part 21 have the same structure;

[0045] The second clamping body right portion 22 includes a clamping bracket 201, an iron block 202, a first electromagnet 203, and a second electromagnet 204. The second electromagnet 204 is connected to an electromagnetic power line and is welded to the clamping body lower portion 108.

[0046] The iron block 202 has an upper movement groove 2021 and a lower movement groove 2022 formed therein and is welded to the clamping bracket 201;

[0047] The second electromagnet 204 includes a guide rail 2032, a spring mounting hole 2034, an electromagnet left side 2031, and an electromagnet right side 2033. The guide rail 2032 is slidably matched with the upper movement slot 2021 and the lower movement slot 2022. The electromagnet left side 2031 or the electromagnet right side 2033 is connected to an electromagnetic power line.

[0048] As a preferred solution of this embodiment, the clamping body upper part 104, the clamping body lower part 108 and the clamping bracket 201 can form a 360° fully enclosed connection, which increases the contact area with the aircraft's front wheel, makes the fixing method more reliable, and makes the force on the aircraft's front wheel more uniform.

[0049] As a preferred solution of this embodiment, the upper portion 102 of the traction fixing plate is provided with an outer groove 1021 and an inner groove 1022, which are slidably connected with the matching rod 103. Under the action of force, the matching rod 103 can slide from the outer groove 1021 to the inner groove 1022. The self-locking rotation is cleverly used to lift the front wheel of the aircraft, reducing the complexity of the device.

[0050] As a preferred solution of this embodiment, a spring 2041 is connected between the second electromagnet 204 and the first electromagnet 203, and the wheel is clamped by the combination of the electromagnet and the spring. The electromagnetic spring wheel clamping method replaces the hydraulic drive, eliminating components such as the hydraulic cylinder and the hydraulic pipeline, making the wheel clamping device simpler and free of safety hazards such as oil leakage and pressure relief.

[0051] When the device of the present invention is used,

[0052] In the first step, the left side 2031 of the electromagnet is energized, the iron block 202 is attracted together with the clamping bracket 201, and the right part 22 of the second clamping body moves horizontally. At the same time, the left part 21 of the second clamping body is operated in the same way, and the hatch is opened;

[0053] The second step is to move the tractor and align the electromagnetic spring type wheel holding device with the front wheel of the aircraft so that it drives into the lower part 108 of the clamping body and enters the interior of the upper part 104 of the clamping body along the guide groove 105;

[0054] The third step is to continue to move the tractor, forcing the front wheel of the aircraft to give a reaction force to the upper part 104 of the clamping body, forcing the matching rod 103 to rotate and slide from the outer groove 1022 of the matching groove to the inner groove 1021 of the matching groove. At the same time, the upper part 104 of the clamping body itself will also rotate around the hinge 106 to raise the front wheel of the aircraft.

[0055] Step 4: The second electromagnet 204 is energized to longitudinally attract the first iron block 202 and compress the spring, and carry the second clamping body right part 22 to move longitudinally along the clamping body lower part 108. At the same time, the second clamping body left part 21 also performs the same operation, and the second clamping body is opened;

[0056] Step 5: The left side 2031 of the electromagnet is powered off, and the right side 2033 of the electromagnet is powered on. The iron block 202 is attracted together with the right part 22 of the second clamping body and moves horizontally. Meanwhile, the left part 21 of the second clamping body is operated in the same way. At this time, the hatch is closed.

[0057] Step 6: The second electromagnet 204 is powered off, the compressed spring recovers, and the iron block 202 is ejected, and the second clamping body right part 22 is forced to move longitudinally along the clamping body lower part 108. At the same time, the second clamping body left part 21 also performs the same operation to clamp the front wheel of the aircraft.

[0058] In this way, the front wheels of the aircraft are fixed and the tractor can perform the corresponding towing movement.

Claims

1. A wheel holding device based on electromagnetic spring, characterized in that: It comprises a first wheel-holding body (1) and a second wheel-holding body (2); The first wheel-holding body (1) comprises a traction fixing plate (101), an upper portion of the traction fixing plate (102), a first clamping body (11), and a lower portion of the traction fixing plate (107); the traction fixing plate (101) is fixedly connected to the traction vehicle; the upper portion of the traction fixing plate (102) and the lower portion of the traction fixing plate (107) are both welded to the traction fixing plate (101); and the lower portion of the traction fixing plate (107) is rotatably connected to the upper portion of the clamping body (104) via a hinge (106); The first clamping body (11) comprises a clamping body upper part (104), a guide groove (105), a rotation spring (1031), a matching rod (103), and a clamping body lower part (108); the guide groove (105) is arranged inside the clamping body upper part (104); the matching rod (103) is rotatably connected to the clamping body upper part (104) via the rotation spring (1031); The lower part (108) of the clamping body is provided with a sliding track, which enables the upper part (104) of the clamping body to slide longitudinally on the lower part (108) of the clamping body; The second wheel-holding body (2) comprises a second clamping body right part (22) and a second clamping body left part (21), and the second clamping body right part (22) and the second clamping body left part (21) have the same structure; The right part (22) of the second clamping body comprises a clamping bracket (201), an iron block (202), a first electromagnet (203), and a second electromagnet (204); the second electromagnet (204) is connected to an electromagnetic power line and is welded to the lower part (108) of the clamping body; An upper movement groove (2021) and a lower movement groove (2022) are provided inside the iron block (202), and the iron block (202) is welded to the clamping bracket (201); The second electromagnet (204) comprises a guide rail (2032), a spring mounting hole (2034), an electromagnet left side (2031), and an electromagnet right side (2033); the guide rail (2032) is slidably matched with the upper movement slot (2021) and the lower movement slot (2022); and the electromagnet left side (2031) or the electromagnet right side (2033) is connected to an electromagnetic power line; The electromagnetic spring-based wheel holding device is characterized in that the upper portion (102) of the traction fixing plate is provided with an outer groove (1021) and an inner groove (1022) of the traction fixing plate, the outer groove (1021) and the inner groove (1022) of the traction fixing plate upper portion (102) are slidably connected to the matching rod (103), and the matching rod (103) can slide from the outer groove (1021) to the inner groove (1022) of the matching groove under the action of force; The electromagnetic spring-based wheel-holding device is characterized in that a spring (2041) is connected between the second electromagnet (204) and the first electromagnet (203), and the machine wheel is clamped by using the combination of the electromagnetic and the spring.

2. The electromagnetic spring-type wheel holding device according to claim 1, characterized in that: The clamping body upper part (104), the clamping body lower part (108) and the clamping bracket (201) can form a 360° fully enclosed connection.

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