Trailer device, tractor and travel trailer

Abstract

The utility model discloses a trailer device, tractor and travel trailer, the trailer device includes ball head trailer hook, crossbeam and cable support, the both ends of crossbeam are equipped with the connecting plate that is used for connecting to the tractor, ball head trailer hook includes main part and ball head part, the direction of ball head part relative to crossbeam is the rear part, and the cable support is equipped with the cable support. The front end of the main body part is connected with the cross beam; the rear end of the main body part is connected with the bulb part; the cable support is connected with the main body part. When in use, the power line can be mounted on the cable bracket to prevent the part of the power line between the tractor and the trailer from hanging down, so that the power line is not easy to hook sundries, and the risk of damage of the power line is reduced; through the arrangement of the ball head tow hook, the trailer is connected with the ball head part of the ball head tow hook during tow, the main body part of the ball head tow hook does not need to be in contact with the trailer, and the problem that the cable support is collided and damaged is avoided. The tractor comprises a vehicle and the towing device. The pull type motor home comprises a motor home main body and the tractor.

Description

Technical Field

[0001] The utility model relates to the field of motor vehicles, in particular to a towing device, a tractor and a towing type caravan. Background Art

[0002] For some vehicles that have no power of their own, an additional tractor is needed to tow them. Such unpowered vehicles are also called trailers. Generally, the towing of the trailer is completed by adding a towing device to the rear of the tractor. Among them, some trailers that need to be connected to a power source, such as trailer-type RVs, also need to connect the power cord from the trailer to the tractor. When driving, the power cord hangs down between the tractor and the trailer, which is easy to hook onto debris, resulting in the risk of damage to the power cord. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a towing device, a tractor and a towing type caravan.

[0004] According to the towing device of the first aspect of the utility model, the towing device includes a ball head trailer hook, a cross beam and a cable bracket, both ends of the cross beam are provided with connecting plates for connecting to the tractor, the ball head trailer hook includes a main body and a ball head, the ball head is spaced apart from the cross beam, the ball head is positioned relative to the cross beam as the rear, the front end of the main body is connected to the cross beam, and the rear end of the main body is connected to the ball head; the cable bracket is connected to the main body.

[0005] The towing device according to the embodiment of the first aspect of the utility model has at least the following technical effects: by setting up a cable bracket, the power cord can be installed on the cable bracket when in use to prevent the power cord from hanging down between the tractor and the trailer, making it difficult for the power cord to be hooked on debris, thereby reducing the risk of damage to the power cord; by setting up a ball head trailer hook, the trailer is connected to the ball head of the ball head trailer hook during towing, and the main body of the ball head trailer hook does not need to contact the trailer, thereby avoiding the problem of the cable bracket being damaged by collision.

[0006] According to some embodiments of the present utility model, the towing device further includes a socket bracket, and the socket bracket is connected to the cross beam.

[0007] According to some embodiments of the present invention, the crossbeam is connected to the main body via a detachable structure.

[0008] According to some embodiments of the utility model, the detachable structure includes two fixed plates and at least one connecting member, the two fixed plates are arranged at intervals along the axial direction of the crossbeam, the main body is arranged between the two fixed plates, and the tops of the two fixed plates are connected to the crossbeam; the connecting member passes through the main body and the two fixed plates in the transverse direction, and the main body and the two fixed plates are detachably connected to the connecting member.

[0009] According to some embodiments of the present invention, the fixing plate is welded to the crossbeam.

[0010] According to some embodiments of the utility model, the crossbeam is in the shape of a rectangular column, a slot is provided at the top of the fixing plate, the crossbeam is arranged in the slot, the front wall of the slot is in contact with the front wall of the crossbeam, and the rear wall of the slot is in contact with the rear wall of the crossbeam.

[0011] According to some embodiments of the present invention, the connecting plate is in contact with the end surface of the crossbeam; and the connecting plate is inclined from the back to the front in a direction away from the crossbeam.

[0012] According to some embodiments of the utility model, the front end of the connecting plate is provided with a bending portion arranged vertically, the bending portion is arranged parallel to the crossbeam, and the bending portion is provided with a plurality of mounting through holes for setting bolts to connect to the tractor.

[0013] According to the second aspect of the present invention, the tractor comprises a vehicle and the above-mentioned towing device, and the connecting plate is connected to the vehicle. Since the tractor comprises the above-mentioned towing device, the beneficial effects that can be achieved by the above-mentioned towing device can be achieved, which will not be repeated here.

[0014] According to the third aspect of the utility model, a trailer-type caravan includes a caravan body and the above-mentioned tractor, wherein the caravan body is detachably connected to the ball head, a power line is connected between the caravan body and the tractor, and the power line is connected to the cable bracket. Since the trailer-type caravan includes the above-mentioned tractor, the beneficial effects that can be achieved by the above-mentioned tractor can be achieved, which will not be repeated here.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the towing device of an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the fixing plate in FIG.

[0019] Figure 3 It is a schematic diagram of the exploded structure of the towing device of the embodiment of the utility model.

[0020] In the attached figure:

[0021] 100-crossbeam; 200-connecting plate; 210-bending portion; 220-installation through hole; 300-detachable structure; 310-fixing plate; 311-slot; 312-fourth through hole; 320-connecting piece; 400-ball head trailer hook; 410-main body; 411-cable bracket; 412-third through hole; 420-ball head; 500-socket bracket. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present utility model, it should be understood that the directions or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the meaning of several is one or more, the meaning of more than two is more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] The following will refer to Figures 1 to 3 A clear and complete description is given to the towing device, tractor and trailer-type caravan of the utility model. Obviously, the embodiments described below are only some embodiments of the utility model, but not all embodiments.

[0026] The towing device of the first embodiment of the utility model includes a ball head trailer hook 400, a cross beam 100 and a cable bracket 411. Both ends of the cross beam 100 are provided with connecting plates 200 for connecting to the tractor. The ball head trailer hook 400 includes a main body 410 and a ball head 420. The ball head 420 is arranged at an interval with the cross beam 100, with the position of the ball head 420 relative to the cross beam 100 as the rear. The front end of the main body 410 is connected to the cross beam 100, and the rear end of the main body 410 is connected to the ball head 420; the cable bracket 411 is connected to the main body 410.

[0027] For example, Figure 1 As shown, the cross beam 100 is in the shape of a rectangular column extending transversely, and a fixing assembly for mounting a ball head trailer hook 400 is arranged at the lower side of the middle part of the cross beam 100. The main body 410 of the ball head trailer hook 400 is the hook body of the ball head trailer hook 400, and the main body 410 extends from the fixing assembly to the rear in an arc shape; the bottom end of the ball head 420 of the ball head trailer hook 400 is connected to the rear end of the main body 410, so that the ball head 420 is arranged in front of the cross beam 100 at intervals. There are two connecting plates 200, and the two connecting plates 200 are fixedly arranged at both ends of the cross beam 100 respectively. The fixing connection method of the connecting plate 200 and the cross beam 100 can be welding; the connecting plate 200 can be provided with bolt holes, a clamping structure or other structures to connect to the rear panel of the tractor. The cable bracket 411 includes a first plate, which is vertically arranged and disposed between the ball head 420 and the fixing assembly. The first plate is provided with a first through hole. The bottom of the first plate is fixedly connected to the main body 410. The first plate and the main body 410 can be fixedly connected by welding.

[0028] By setting up the cable bracket 411, the power cord can be installed on the cable bracket 411 when in use, so as to prevent the power cord from hanging down between the tractor and the trailer, making it difficult for the power cord to be hooked on debris, thereby reducing the risk of damage to the power cord; in addition, by setting the cable bracket 411 on the main body 410, the position of the cable bracket 411 is closer to the middle position between the tractor and the trailer, and the effect of preventing the power cord from hanging down is better; and, by setting up the ball head trailer hook 400, the trailer is connected to the ball head 420 of the ball head trailer hook 400 during towing, and the main body 410 of the ball head trailer hook 400 does not need to contact the trailer, thereby avoiding the problem of the cable bracket 411 being damaged by collision.

[0029] When the cable bracket 411 is a first plate provided with a first through hole, the power cord can be installed on the cable bracket 411 by passing the power cord through the first through hole. It can be understood that by fixing the bottom of the cable bracket 411 to the main body 410, the main body 410 can support the cable bracket 411, and the structure of the cable bracket 411 is more stable and not easy to loosen and fall off.

[0030] In some embodiments of the utility model, the crossbeam 100 is provided with a socket bracket 500. The socket bracket 500 includes a second plate, which is arranged on the lower side of the crossbeam 100, and the second plate is arranged beside the fixing assembly. The connection between the top of the second plate and the crossbeam 100 can be welding. The lower end of the second plate is provided with an inclined portion inclined forward and downward, and the inclined portion is provided with a second through hole and a plurality of internal threaded holes, and the plurality of internal threaded holes are arranged in sequence along the outer circumference of the second through hole. When in use, the socket for powering the trailer drawn from the tractor can be set on the socket bracket 500, and the power supply to the trailer can be realized by inserting the plug on the power line drawn from the trailer into the socket; the arrangement of the socket bracket 500 facilitates the installation and fixation of the socket. The socket can be set on the inclined portion, and by setting the second through hole, it is convenient to route the wire between the socket and the tractor; by setting the internal threaded hole, it is convenient to use bolts to fix the socket to the inclined portion; by setting the inclined portion, the direction of the socket hole of the socket is rearward and downward, which is compatible with the extension direction of the power line, and it is convenient to plug and unplug the plug.

[0031] In some embodiments of the utility model, the cross beam 100 is connected to the main body 410 via a detachable structure 300. In this way, the ball head trailer hook 400 can be removed when not in use to meet the use requirements of different users. The detachable structure 300 can be a bolt connection structure, a clamping structure or other suitable structures.

[0032] In some embodiments of the present invention, the detachable structure 300 includes two fixing plates 310 and at least one connecting member 320. The two fixing plates 310 are spaced apart along the axial direction of the cross beam 100. The main body 410 is disposed between the two fixing plates 310. The tops of the two fixing plates 310 are both connected to the cross beam 100. The connecting member 320 penetrates the main body 410 and the two fixing plates 310 in the horizontal direction. The main body 410 and the two fixing plates 310 are both detachably connected to the connecting member 320. There are two connecting members 320, and the two connecting members 320 are spaced apart along the vertical direction. Figure 3 The connecting member 320 can be a bolt. For any connecting member 320, the main body 410 is provided with a third through hole 412 corresponding to the connecting member 320, and the two fixing plates 310 are provided with a fourth through hole 312 corresponding to the connecting member 320. The connecting member 320 passes through the third through hole 412 and the fourth through holes 312 of the two fixing plates 310 in the transverse direction and is threadedly connected with a nut. By disassembling the connecting member 320, the detachable connection between the main body 410 and the crossbeam 100 can be realized. This structure is simple and convenient for disassembling the ball head trailer hook 400.

[0033] In some embodiments of the present invention, the fixing plate 310 is welded to the cross beam 100. In this way, the connection between the fixing plate 310 and the cross beam 100 is stable. Of course, in some other embodiments of the present invention, the fixing plate 310 and the cross beam 100 can also be fixedly connected by bolt connection, clamping or other suitable connection methods.

[0034] In some embodiments of the present invention, referring to Figure 2 The cross beam 100 is in a rectangular column shape, a slot 311 is provided at the top of the fixing plate 310, the cross beam 100 is arranged in the slot 311, the front wall of the slot 311 is in contact with the front wall of the cross beam 100, and the rear wall of the slot 311 is in contact with the rear wall of the cross beam 100. The slot 311 is rectangular, and the top of the slot 311 is open. During assembly, the cross beam 100 can be moved from top to bottom into the slot 311, and then welded; the front and rear dimensions of the slot 311 are over-fitted or interference-fitted with the front and rear dimensions of the cross beam 100, so that the front wall of the slot 311 abuts against the front wall of the cross beam 100, and the rear wall of the slot 311 abuts against the rear wall of the cross beam 100. It is understandable that when towing a trailer, the tractor will drive the trailer to accelerate or decelerate, and the ball-head trailer hook 400 will be subjected to the forward and backward forces from the trailer, so that the forward and backward forces need to be transmitted between the fixed plate 310 and the cross beam 100; in this embodiment, a slot 311 is provided, and the front wall of the slot 311 abuts against the cross beam 100 from front to back, and the rear wall of the slot 311 abuts against the cross beam 100 from back to front, so that the force in the front-to-back direction is directly transmitted between the fixed plate 310 and the cross beam 100, and the welding structure, bolt connection structure or other connection structure between the fixed plate 310 and the cross beam 100 does not need to withstand the force transmission in the front-to-back direction, so the connection between the fixed plate 310 and the cross beam 100 is more stable.

[0035] In addition, in some embodiments of the utility model, the ball head 420 of the ball head trailer hook 400 is located at the rear lower part of the cross beam 100 so that the height position of the ball head 420 is adapted to the trailer. It can be understood that when the ball head 420 is subjected to the force in the front and rear directions, the fixing plate 310 and the cross beam 100 need to transmit torque; in this embodiment, by setting the cross beam 100 to be rectangular columnar and the slot 311 to be rectangular, the circumferential movement of the fixing plate 310 relative to the cross beam 100 is limited, and the torque is directly transmitted between the fixing plate 310 and the cross beam 100, and the welding structure, bolt connection structure or other connection structure between the fixing plate 310 and the cross beam 100 does not need to bear the torque, so the connection between the fixing plate 310 and the cross beam 100 is more stable. In fact, the welding structure, bolt connection structure or other connection structure between the fixing plate 310 and the cross beam 100 only needs to bear the gravity of the ball head trailer hook 400 and the detachable structure 300. The edges of the crossbeam 100 and the inner wall of the slot 311 may be rounded to reduce the concentration of gravity.

[0036] In some embodiments of the present invention, the connecting plate 200 is fitted with the end surface of the cross beam 100; the connecting plate 200 is tilted from the back to the front in a direction away from the cross beam 100. By setting the connecting plate 200 to fit the end surface of the cross beam 100, the contact area between the connecting plate 200 and the cross beam 100 is larger, and the connection is more stable, wherein the connecting plate 200 and the cross beam 100 can be fixedly connected by welding. The left end face of the beam 100 is inclined to the left from back to front, and the right end face of the beam 100 is inclined to the right from back to front. When the two connecting plates 200 are respectively attached to the left end face and the right end face of the beam 100, the distance between the two connecting plates 200 gradually increases from back to front; in this way, when the beam 100 is subjected to a backward force, the inclined connecting plate 200 can abut against the end of the beam 100 from back to front and bear part of the force, so that there is no need for welding or other connecting structures to bear all the force, and the connection between the connecting plate 200 and the beam 100 is more stable.

[0037] In some embodiments of the utility model, the front end of the connecting plate 200 is provided with a bending portion 210, the bending portion 210 is vertically arranged, the bending portion 210 is parallel to the cross beam 100, and the bending portion 210 is provided with a plurality of mounting holes 220 for setting bolts to connect to the tractor. The bending portions 210 of the two connecting plates 200 are coplanar, and the two bending portions 210 can be attached to the rear panel of the tractor to facilitate the connection between the bending portions 210 and the tractor; the mounting holes 220 can be used to set bolts to connect to the rear panel of the tractor. Among them, the bending angle between the bending portion 210 and the connecting plate 200 can also be set to 60 degrees to maximize the material utilization rate.

[0038] In some embodiments of the utility model, the ball head trailer hook 400, the cross beam 100, the cable bracket 411, the socket bracket 500, the two connecting plates 200, and the two fixing plates 310 are all independent components, so that during the design and manufacturing, the thickness and shape of each component can be adjusted to meet the requirements of different vehicle models for towing capacity, which is more conducive to the modularization of the trailer device, reduces the multiple scheme decisions made by the car companies when designing the trailer device, and better improves the design efficiency.

[0039] The connecting plate 200 can be made of 700L stamped steel plate. The position of the mounting through hole 220 of the bent portion 210 of the connecting plate 200 is determined according to the tractor. The thickness of the connecting plate 200 is determined by the weight of the trailer and the required towing force. When the preset towing force is 1 ton, 1.5 tons, 2 tons, 3 tons, and 4 tons, the thickness of the connecting plate 200 can be selected to be 10 mm, 10 mm, 11 mm, 12 mm, and 14 mm respectively.

[0040] The crossbeam 100 can be made of Q355NE material with a rectangular cross-section and rounded corners. The length of the crossbeam 100 is determined according to the position of the side panel, and the wall thickness and size of the crossbeam 100 tube are determined by the weight of the trailer and the required towing force. Taking a rectangular tube of 56 mm by 98 mm and a rounded corner of 14 mm as an example, when the preset towing force is 1 ton, 2 tons, 3 tons, and 4 tons, the wall thickness of the crossbeam 100 tube can be selected to be 6 mm, 6 mm, 6.5 mm, and 7 mm respectively.

[0041] The fixed plate 310 can adopt 700L stamped steel plate. The thickness of the fixed plate 310 is determined by the weight of the trailer and the required towing force. When the preset towing force is 1 ton, 2 tons, 3 tons, and 4 tons, the thickness of the fixed plate 310 can be selected as 10 mm, 10 mm, 12 mm, and 13 mm respectively; among which, for the trailer requirement with a towing force greater than 2 tons, the material of the fixed plate 310 can also be selected as ZG34Cr2Ni2Mo. When the preset towing force is 3 tons and 4 tons, the thickness of the fixed plate 310 can be selected as 9 mm and 10 mm respectively.

[0042] The tractor of the second embodiment of the utility model comprises a vehicle and the above-mentioned towing device, and the connecting plate 200 is connected to the vehicle. The vehicle has a rear panel, and the two connecting plates 200 are connected to the rear panel. Since the tractor comprises the above-mentioned towing device, the beneficial effects that can be achieved by any towing device provided in the embodiment of the application can be achieved, which are detailed in the previous embodiment and will not be repeated here.

[0043] The trailer-type caravan of the third embodiment of the utility model includes a caravan body and the above-mentioned tractor, the caravan body is detachably connected to the ball head 420, a power cord is connected between the caravan body and the tractor, and the power cord is connected to the cable bracket 411. The detachable connection between the caravan body and the ball head 420 is a conventional technical means in the art, and its specific structure is not described in detail here; since the trailer-type caravan includes the above-mentioned tractor, it can achieve the beneficial effects that can be achieved by any tractor provided in the embodiments of the present application, see the previous embodiments for details, and will not be described in detail here.

[0044] The preferred implementation methods of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A towing device, characterized in that: It includes a ball head trailer hook, a cross beam and a cable bracket. Both ends of the cross beam are provided with connecting plates for connecting to a tractor. The ball head trailer hook includes a main body and a ball head. The ball head is spaced apart from the cross beam, with the ball head relative to the cross beam as the rear. The front end of the main body is connected to the cross beam, and the rear end of the main body is connected to the ball head. The cable bracket is connected to the main body.

2. The towing device according to claim 1, characterized in that: The towing device also includes a socket bracket, and the socket bracket is connected to the crossbeam.

3. The towing device according to claim 1, characterized in that: The crossbeam is connected to the main body via a detachable structure.

4. The towing device according to claim 3, characterized in that: The detachable structure includes two fixing plates and at least one connecting member, the two fixing plates are arranged at intervals along the axial direction of the crossbeam, the main body is arranged between the two fixing plates, and the tops of the two fixing plates are connected to the crossbeam; the connecting member penetrates the main body and the two fixing plates in the transverse direction, and the main body and the two fixing plates are detachably connected to the connecting member.

5. The towing device according to claim 4, characterized in that: The fixing plate is welded to the crossbeam.

6. The towing device according to claim 4, characterized in that: The crossbeam is in a rectangular column shape, a slot is provided at the top of the fixing plate, the crossbeam is arranged in the slot, the front wall of the slot fits with the front wall of the crossbeam, and the rear wall of the slot fits with the rear wall of the crossbeam.

7. The towing device according to claim 1, characterized in that: The connecting plate is fitted with the end surface of the cross beam; the connecting plate is inclined from the back to the front in a direction away from the cross beam.

8. The towing device according to claim 7, characterized in that: A bending portion arranged vertically is provided at the front end of the connecting plate. The bending portion is arranged parallel to the cross beam. The bending portion is provided with a plurality of mounting through holes for setting bolts to connect to the tractor.

9. A tractor, characterized in that: The invention comprises a vehicle and a towing device as claimed in any one of claims 1 to 8, wherein the connecting plate is connected to the vehicle.

10. A trailer RV, characterized in that: It comprises a motorhome body and the tractor as claimed in claim 9, wherein the motorhome body and the ball head are detachably connected, a power cord is connected between the motorhome body and the tractor, and the power cord is connected to the cable bracket.

Images