Pull type tractor separation and butt joint auxiliary device

Abstract

The invention relates to the technical field of automobile parts, and discloses a pull type tractor separation and butt joint auxiliary device which comprises a mounting frame, fixing plates are rotationally connected to the left side and the right side of the mounting frame correspondingly, and the tops of the fixing plates are fixedly connected with a compartment. The inner bottom wall and the inner top wall of the mounting frame are fixedly connected with a first transmission assembly and a second transmission assembly respectively, the first transmission assembly and the second transmission assembly are fixedly connected with an outer sleeve, and an inner sleeve is sleeved with the outer sleeve; the separation and butt joint auxiliary device for the pull-type tractor solves the problems that in the prior art, a pull-type tractor separation and butt joint auxiliary device is single in function, generally only has a steering function and cannot be folded, wheels of a steering device are small in size, and consequently the speed of a front vehicle must be controlled when a carriage of a pull-type motor home moves along with the front vehicle; and the problem of damage caused by overload of the small wheels is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, in particular to a separation and docking auxiliary device for a towing tractor. Background Art

[0002] A trailer RV is a type of RV. Unlike a self-propelled RV, a trailer RV has no power of its own and requires an additional vehicle to tow it.

[0003] A trailer RV is generally towed behind an SUV, car or self-propelled RV using a connector and a hook. A set of steering wheels is generally provided below the connector so that the RV can adjust its position and direction when it is not connected to the vehicle in front. The existing trailer tractor separation and docking assist device has a relatively simple function, usually only has a steering function and cannot be folded. The wheels of the steering device are relatively small, which means that when the trailer RV car body moves with the front vehicle, the speed of the front vehicle must be controlled to avoid damage caused by overload of the small wheels. Secondly, the existing trailer tractor separation and docking assist device cannot be adjusted in height. When the car body is towed, it needs to be manually supported, and then the trailer needs to be reversed to the trailer hook and manually lowered to hook the front vehicle's towing hook, which is cumbersome to operate. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a trailer-type tractor separation and docking auxiliary device with the advantages of foldability and adjustable height, etc., which solves the problem that the trailer-type tractor separation and docking auxiliary device in the existing technology is relatively simple in function, usually only has a steering function, and cannot be folded, and the wheels carried by the steering device are relatively small in size, which results in the trailer car body following the front vehicle. The speed of the front vehicle must be controlled to avoid damage caused by overload of the small wheels. Secondly, the existing trailer-type tractor separation and docking auxiliary device cannot be adjusted in height. When the car body is towed, it needs to be manually supported, and then the trailer is reversed to the trailer hook and manually lowered to hook the front vehicle's towing hook, which is cumbersome to operate.

[0005] In order to achieve the above-mentioned purpose of foldability and height adjustment, the present invention provides the following technical solution: a towing tractor separation and docking auxiliary device, including a mounting frame, the left and right sides of the mounting frame are rotatably connected to a fixed plate, the top of the fixed plate is fixedly connected to the vehicle body, the inner bottom wall and the inner top wall of the mounting frame are respectively fixedly connected to the first transmission assembly and the second transmission assembly, the first transmission assembly and the second transmission assembly are fixedly connected to the outer sleeve, the inner sleeve is sleeved inside the outer sleeve, one side of the first transmission assembly and the second transmission assembly are respectively fixedly connected to the first motor and the second motor, one of the fixed plates is fixedly connected to the side away from the mounting frame with a third motor, the fixed plate and the third motor are fixedly connected via the third transmission assembly, and the output end of the first motor is drivingly connected to the inner sleeve.

[0006] Preferably, the output end of the first motor is fixedly connected to a first worm, a first through hole is provided on the side wall of the first transmission assembly, the first worm passes through the first through hole and extends to the outside of the other side of the first transmission assembly, the first transmission assembly is internally rotatably connected to a first gear, the inside of the first gear is fixedly connected to a first protrusion, the outside of the inner sleeve is provided with a long groove adapted to the first protrusion, the inner sleeve is slidingly connected to the first gear through the long groove, and the first worm is meshed with the first gear.

[0007] Preferably, the inner sleeve is threadedly connected to a screw, the top of the screw is located above the inner sleeve, the output end of the second motor is fixedly connected to a second worm, the side wall of the second transmission assembly is provided with a second through hole, the second worm passes through the second through hole and extends to the outside of the other side of the second transmission assembly, the second transmission assembly is rotatably connected to a second gear, the inner top wall of the mounting bracket is rotatably connected to a shaft head, the outside of the shaft head is provided with a first groove, the inside of the second gear is fixedly connected to a second protrusion, the second gear is clamped to the outside of the shaft head through the second protrusion, the inside of the shaft head is fixedly connected to the top of the screw, and the second worm is meshed with the second gear.

[0008] Preferably, both sides of the mounting frame are fixedly connected with fixed shafts, the fixed plate is rotatably connected to the mounting frame via the fixed shafts, and a third protrusion is provided on the surface of the fixed shafts.

[0009] Preferably, a third gear is rotatably connected inside the third transmission assembly, a third worm is fixedly connected to the output end of the third motor, a third through hole is provided on the side wall of the third transmission assembly, the third worm passes through the through hole and extends to the outside of the other side of the third transmission assembly, the third worm is meshed with the third gear, a second groove adapted to the third protrusion is provided inside the third gear, and the third gear is clamped to the fixed shaft through the second groove.

[0010] Preferably, the bottom of the inner sleeve is fixedly connected to a wheel axle, and both ends of the wheel axle are rotatably connected to two wheels respectively.

[0011] Preferably, a first adjustment hole is formed at one end of the first worm away from the first motor.

[0012] Preferably, a second adjustment hole is formed at one end of the second worm away from the second motor.

[0013] Preferably, a third adjustment hole is formed at one end of the third worm away from the third motor.

[0014] Compared with the prior art, the present invention provides a towing tractor separation and docking auxiliary device, which has the following beneficial effects: 1. The towing and docking auxiliary device for a towing tractor is provided with a first motor. When the first motor is in operation, the first gear is driven to rotate via the first worm gear. Then, the first gear drives the inner sleeve to rotate inside the outer sleeve via the first protrusion and the long groove. Since the bottom of the inner sleeve is connected to the wheel via the wheel axle, the first motor can drive the wheel to swing, thereby realizing active steering of the tractor. By providing a second motor, the second motor is driven to rotate via the second worm gear. At this time, the second gear drives the shaft head to rotate via the engagement of the second protrusion and the first groove. The shaft head drives the screw to rotate. Through the threaded connection between the screw and the inner sleeve and the engagement of the inner sleeve with the first gear, when the screw rotates horizontally, the inner sleeve can rise or fall outside the screw. The bottom of the inner sleeve is connected to the wheel, thereby achieving the purpose of adjusting the height of the vehicle body. This solves the problem that the towing and docking auxiliary device for a towing tractor in the prior art cannot adjust the height. When the vehicle body is towed, it needs to be manually supported by hand, and then the trailer is reversed to the tow hook and manually lowered to hook the towing hook of the front vehicle, which is a cumbersome operation.

[0015] 2. The trailer-type tractor separation and docking auxiliary device is provided with a third motor. The third motor drives the third gear to rotate through the third worm. The third gear drives the fixed shaft to rotate through the third protrusion and the second groove. The fixed shaft drives the mounting frame to rotate at the same time. Since the fixed plate is fixedly connected to the vehicle body, the rotation of the mounting frame can drive the wheel to be stored under the vehicle body through the inner sleeve, thereby achieving the purpose of folding the wheel. This solves the problem that the trailer-type tractor separation and docking auxiliary device in the prior art is relatively single in function, usually only has a steering function and cannot be folded, and the wheel size of the steering device is relatively small, which results in the trailer car body having to control the speed of the leading vehicle when following the leading vehicle to avoid damage caused by overload of the small wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the outer sleeve of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a bottom view of the structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the internal structure of the third transmission assembly of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle.

[0017] In the figure: 1. Mounting frame; 2. Fixing plate; 21. First transmission assembly; 211. First gear; 212. First protrusion; 22. Second transmission assembly; 221. Second gear; 222. Shaft head; 223. First groove; 224. Second protrusion; 23. Third transmission assembly; 231. Third gear; 232. Second groove; 3. Outer sleeve; 4. Inner sleeve; 41. Long groove; 5. First motor; 6. Second motor; 7. Third motor; 8. First worm; 9. Screw; 10. Second worm; 11. Fixing shaft; 111. Third protrusion; 12. Third worm; 13. Axle; 14. Wheel; 15. First adjustment hole; 16. Second adjustment hole; 17. Third adjustment hole. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] For example 1, please refer to Figure 1-5The utility model provides a kind of trailer towing vehicle separation butt joint auxiliary device, including mounting bracket 1, the left and right sides of mounting bracket 1 are rotatably connected with fixed plate 2, the left and right sides of mounting bracket 1 are fixedly connected with fixed shaft 11, fixed plate 2 is rotatably connected with mounting bracket 1 by fixed shaft 11, the top of fixed plate 2 is fixedly connected with carriage, fixed plate 2 is installed on the bottom of carriage front end A type frame by bolt, the inner bottom wall and inner top wall of mounting bracket 1 are fixedly connected with first transmission assembly 21 and second transmission assembly 22 respectively, first transmission assembly 21 and second transmission assembly 22 are fixedly connected with outer sleeve 3 between, inner sleeve 4 is sleeved in outer sleeve 3, one side of first transmission assembly 21 and second transmission assembly 22 is fixedly connected with first motor 5 and second motor 6 respectively, one of fixed plate 2 is fixedly connected with third motor 7 away from mounting bracket 1, the output end of first motor 5 is drivingly connected with inner sleeve 4, the output end of first motor 5 is fixedly connected with first worm 8, the side wall of first transmission assembly 21 is provided with first through hole, first worm 8 penetrates first through hole and extends to the outside of other side of first transmission assembly 21, first worm 8 is provided with first adjusting hole 15 away from the one end of first motor 5, first adjusting hole 15 is used for manually adjusting wheel steering when first motor 5 is not powered, first worm 8 is rotatably connected with first transmission assembly 21, first transmission assembly 21 is rotatably connected with first gear 211 in the inside, the inside of first gear 211 is fixedly connected with first protrusion 212, the outside of inner sleeve 4 is provided with strip-shaped recess 41 matched with first protrusion 212, inner sleeve 4 is slidably connected with first gear 211 by strip-shaped recess 41, first worm 8 is engaged with first gear 211, screw rod 9 is screw-connected in the inside of inner sleeve 4, the top of screw rod 9 extends to above the top of inner sleeve 4, the output end of second motor 6 is fixedly connected with second worm 10, the side wall of second transmission assembly 22 is provided with second through hole, second worm 10 penetrates second through hole and extends to the outside of other side of second transmission assembly 22, second worm 10 is provided with second adjusting hole 16 away from the one end of second motor 6, second adjusting hole 16 is used for manually adjusting the height of carriage when second motor 6 is not powered, second worm 10 is rotatably connected with second transmission assembly 22, second transmission assembly 22 is rotatably connected with second gear 221 in the inside, second worm 10 is engaged with second gear 221, the inner top wall of mounting bracket 1 is rotatably connected with shaft head 222, the outside of shaft head 222 is provided with first recess 223, the inside of second gear 221 is fixedly connected with second protrusion 224 matched with first recess 223, second gear 221 is clamped to the outside of shaft head 222 by second protrusion 224, the inside of shaft head 222 is fixedly connected with the top end of screw rod 9, the bottom of inner sleeve 4 is fixedly connected with wheel shaft 13, the two ends of wheel shaft 13 are rotatably connected with two wheels 14 respectively.

[0020] In this embodiment, a first motor 5 is provided, and the first motor 5 works, driving the first gear 211 to rotate through the first worm 8, and then the first gear 211 drives the inner sleeve 4 to rotate inside the outer sleeve 3 through the first protrusion 212 and the long groove 41. Since the bottom of the inner sleeve 4 is connected to the wheel 14 through the axle 13, the first motor 5 can drive the wheel 14 to swing, and then the steering action is realized.

[0021] In this embodiment, by setting a second motor 6, the second motor 6 drives the second gear 221 to rotate through the second worm 10. At this time, the second gear 221 drives the shaft head 222 to rotate through the clamping connection between the second protrusion 224 and the first groove 223, and the shaft head 222 drives the screw 9 to rotate. Through the threaded connection between the screw 9 and the inner sleeve 4, and the clamping connection between the inner sleeve 4 and the first gear 211, when the screw 9 rotates in the horizontal direction, the inner sleeve 4 can rise or fall outside the screw 9, and be connected to the wheel 14 through the bottom of the inner sleeve 4, so as to achieve the purpose of adjusting the height of the car body, thereby solving the problem in the prior art that the towing tractor separation and docking auxiliary device cannot adjust the height, and needs to be manually supported when the car body is towed, and then the trailer is reversed to the trailer hook, and manually lowered to hook the front car towing hook, which is a cumbersome operation.

[0022] For example 2, please refer to Figure 6-7 This embodiment is further optimized based on the first embodiment, and the same parts as the above technical solutions will not be repeated here. Figure 1-5 As shown, in order to better realize the present invention, the following setting method is particularly adopted: a third protrusion 111 is provided on the surface of the fixed shaft 11, the fixed plate 2 and the third motor 7 are fixedly connected through the third transmission assembly 23, and the third gear 231 is rotatably connected inside the third transmission assembly 23. The output end of the third motor 7 is fixedly connected to the third worm 12, and the side wall of the third transmission assembly 23 is provided with a third through hole. The third worm 12 passes through the through hole and extends to the outside of the other side of the third transmission assembly 23. The third worm 12 is rotatably connected to the third transmission assembly 23, and a third adjusting hole 17 is provided at the end of the third worm 12 away from the third motor 7. The third adjusting hole 17 is used to manually adjust the steering device to fold when the third motor 7 is out of power. The third worm 12 is meshed with the third gear 231, and a second groove 232 adapted to the third protrusion 111 is provided inside the third gear 231. The third gear 231 is clamped with the fixed shaft 11 through the second groove 232.

[0023] In this embodiment, a third motor 7 is provided, and the third motor 7 drives the third gear 231 to rotate through the third worm 12. The third gear 231 drives the fixed shaft 11 to rotate through the third protrusion 111 and the second groove 112. The fixed shaft 11 drives the mounting frame 1 to rotate at the same time. Since the fixed plate 2 is fixedly connected to the car body, the rotation of the mounting frame 1 can drive the wheel 14 to be stored under the car body through the inner sleeve 4, thereby achieving the purpose of foldable wheels, solving the problem that the function of the towing tractor separation and docking auxiliary device in the prior art is relatively single, usually only has a steering function and cannot be folded, and the wheel size of the steering device is relatively small, which results in the trailer car body following the front vehicle. The speed of the front vehicle must be controlled to avoid damage caused by overload of the small wheels.

[0024] To sum up, the trailer-type tractor separation and docking auxiliary device has the advantages of foldability and adjustable height, which solves the problem that the trailer-type tractor separation and docking auxiliary device in the prior art has a relatively single function, usually only has a steering function, and cannot be folded, and the wheels of the steering device are relatively small, which results in the trailer-type tractor having to control the speed of the front vehicle when the trailer car body follows the front vehicle to avoid damage caused by overload of the small wheels. Secondly, the existing trailer-type tractor separation and docking auxiliary device cannot adjust the height. When the car body is towed, it needs to be manually supported, and then the trailer needs to be reversed to the trailer hook and manually lowered to hook the front vehicle towing hook, which is a cumbersome operation.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A trailer-type tractor separation and docking auxiliary device, comprising a mounting frame (1), characterized in that: The left and right sides of the mounting frame (1) are rotatably connected to fixed plates (2), the top of the fixed plates (2) is fixedly connected to the carriage, the inner bottom wall and the inner top wall of the mounting frame (1) are respectively fixedly connected to a first transmission assembly (21) and a second transmission assembly (22), the first transmission assembly (21) and the second transmission assembly (22) are fixedly connected to an outer sleeve (3), an inner sleeve (4) is sleeved inside the outer sleeve (3), one side of the first transmission assembly (21) and the second transmission assembly (22) are respectively fixedly connected to a first motor (5) and a second motor (6), one side of one of the fixed plates (2) away from the mounting frame (1) is fixedly connected to a third motor (7), the fixed plate (2) and the third motor (7) are fixedly connected via a third transmission assembly (23), and the output end of the first motor (5) is drivingly connected to the inner sleeve (4).

2. The auxiliary device for separating and docking a trailer-type tractor according to claim 1, characterized in that: The output end of the first motor (5) is fixedly connected to a first worm (8), a first through hole is provided on the side wall of the first transmission component (21), the first worm (8) passes through the first through hole and extends to the outside of the other side of the first transmission component (21), the first transmission component (21) is internally rotatably connected to a first gear (211), the first gear (211) is internally fixedly connected to a first protrusion (212), the outer portion of the inner sleeve (4) is provided with a long groove (41) adapted to the first protrusion (212), the inner sleeve (4) is slidably connected to the first gear (211) through the long groove (41), and the first worm (8) is meshed with the first gear (211).

3. The auxiliary device for separating and docking a towing tractor according to claim 2, characterized in that: The inner sleeve (4) is internally threadedly connected to a screw (9), the top of the screw (9) is located above the inner sleeve (4), the output end of the second motor (6) is fixedly connected to a second worm (10), the side wall of the second transmission component (22) is provided with a second through hole, the second worm (10) passes through the second through hole and extends to the outside of the other side of the second transmission component (22), the interior of the second transmission component (22) is rotatably connected to a second gear (221), the inner top wall of the mounting frame (1) is rotatably connected to a shaft head (222), the outside of the shaft head (222) is provided with a first groove (223), the interior of the second gear (221) is fixedly connected to a second protrusion (224), the second gear (221) is clamped to the outside of the shaft head (222) through the second protrusion (224), the interior of the shaft head (222) is fixedly connected to the top of the screw (9), and the second worm (10) is meshed with the second gear (221).

4. The auxiliary device for separating and docking a towing tractor according to claim 1, characterized in that: Both sides of the mounting frame (1) are fixedly connected with fixed shafts (11), the fixed plate (2) is rotatably connected to the mounting frame (1) via the fixed shafts (11), and a third protrusion (111) is provided on the surface of the fixed shaft (11).

5. The auxiliary device for separating and docking a towing tractor according to claim 4, characterized in that: The third transmission component (23) is internally rotatably connected to a third gear (231), and the output end of the third motor (7) is fixedly connected to a third worm (12). A third through hole is provided on the side wall of the third transmission component (23), and the third worm (12) passes through the through hole and extends to the outside of the other side of the third transmission component (23). The third worm (12) is meshed with the third gear (231). A second groove (232) adapted to the third protrusion (111) is provided inside the third gear (231), and the third gear (231) is engaged with the fixed shaft (11) through the second groove (232).

6. The auxiliary device for separating and docking a towing tractor according to claim 2, characterized in that: The bottom of the inner sleeve (4) is fixedly connected to a wheel axle (13), and both ends of the wheel axle (13) are rotationally connected to two wheels (14) respectively.

7. The auxiliary device for separating and docking a towing tractor according to claim 2, characterized in that: A first adjustment hole (15) is formed at one end of the first worm (8) away from the first motor (5).

8. The auxiliary device for separating and docking a towing tractor according to claim 3, characterized in that: A second adjustment hole (16) is provided at one end of the second worm (10) away from the second motor (6).

9. The auxiliary device for separating and docking a towing tractor according to claim 5, characterized in that: A third adjustment hole (17) is formed at one end of the third worm (12) away from the third motor (7).

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