Reverse traction frame of travel trailer

Abstract

The utility model relates to the technical field of traction frames, and provides a reverse traction frame of a trailer motor home, which comprises a mounting strip I and a plurality of mounting strips II, and further comprises a plurality of round rods which are symmetrically and fixedly mounted on the opposite sides of the mounting strip I in pairs, and movable grooves are formed in the mounting strips II. According to the device, the first screw rod is rotated by hands, the first screw rod can move from the interior of the adjusting hole to the outer side and is separated, so that limiting on the second mounting strip is relieved, at the moment, the second mounting strip can be pulled towards the side away from the first mounting strip, a round rod and a movable block slide in a movable groove, and a compression spring is stretched synchronously; and when the two U-shaped plates are adjusted to a proper distance, the first screw rod is reversely rotated to be inserted into the adjusting hole, and the second mounting strip is limited, so that the reverse traction frame can be mounted according to the trailer motor homes of different models without being independently manufactured in a matched manner, and the applicability of the reverse traction frame is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of towing frames, in particular to a reverse towing frame for a towed caravan. Background Technique

[0002] A towed caravan (also known as a travel trailer or camping trailer) is a mobile residence designed to be towed by a towing vehicle such as a car, truck, or SUV. They provide travelers with the option of enjoying comfortable accommodation during the journey, especially suitable for those who like self-driving tours and camping. There are various types and sizes of towed caravans, which can be selected according to different needs and budgets.

[0003] In the prior art, as disclosed in Chinese Patent No.: CN218616118U, a reverse towing frame for a towed caravan is provided, including a towing head. One end of the towing head is provided with a through groove, and a spherical connector is clamped through the through groove at one end of the towing head. One end of the towing head away from the through groove is fixedly connected with a towing pipe. One end of the towing pipe away from the towing head is fixedly connected with a telescopic rod. A through groove is provided in the middle of the telescopic rod, and a telescopic support arm is fixedly connected through the through groove. A support shaft is fixedly connected inside the telescopic support arm. A telescopic support wheel is movably connected inside the support shaft. A support handle is welded at the top of the support shaft. Both ends of the innermost part of the telescopic rod are fixedly connected with movable arms. The movable shaft is movably clamped inside the movable groove. By providing two towing devices in the utility model, it is beneficial to connect two trailers simultaneously, control the driving speed and direction of the towed caravan, and ensure driving safety.

[0004] Although the above solution has the above advantages, the disadvantage of the above solution is that although it can be beneficial to connect two trailers simultaneously, control the driving speed and direction of the towed caravan, and ensure driving safety by providing two towing devices, due to the different models and lengths of towed caravans, it needs to be manufactured according to different models of towed caravans, resulting in a low applicability of its reverse towing frame. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem existing in the prior art that although it can be beneficial to connect two trailers simultaneously, control the driving speed and direction of the towed caravan, and ensure driving safety by providing two towing devices, due to the different models and lengths of towed caravans, it needs to be manufactured according to different models of towed caravans, resulting in a low applicability of its reverse towing frame.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a reverse towing frame for a towed caravan, including: a first mounting strip and a plurality of second mounting strips, and further including:

[0007] Multiple round rods are respectively and symmetrically fixed on the opposite sides of the first mounting strip in pairs. Activity grooves are formed inside multiple second mounting strips, and the outer surfaces of multiple round rods are respectively movably embedded inside multiple activity grooves. One end of each of multiple round rods is fixedly provided with an activity block, and the outer surfaces of multiple activity blocks are respectively movably embedded inside multiple activity grooves.

[0008] Preferably, multiple adjusting holes are equidistantly formed on the outer surfaces of multiple round rods. One end of each of multiple first screws is threadedly embedded near the bottom of the second mounting strip close to the first mounting strip, and one end of each of multiple first screws is respectively movably embedded inside some of the adjusting holes. By manually rotating the first screw, it can be disengaged from the adjusting hole, thereby releasing the limit on the second mounting strip.

[0009] Preferably, compression springs are movably embedded inside multiple activity grooves. One end of each of multiple compression springs is fixedly installed at one end of multiple round rods, and the other end of each of multiple compression springs is fixedly installed on one side of the inner wall of multiple activity grooves. Through the above setting, when the limit on the second mounting strip is released, under the restoring force of the compression spring, the second mounting strip can move towards the first mounting strip.

[0010] Preferably, multiple second mounting strips are evenly divided into two groups. U-shaped plates are fixedly installed on the sides of two groups of second mounting strips away from the first mounting strip. Rotating rods are movably embedded on the opposite sides of the two arms of each of the two U-shaped plates. Through the above setting, the rotating rods can rotate at an appropriate angle.

[0011] Preferably, traction brackets are movably sleeved on the outer surfaces of two rotating rods. Traction holes are formed at the tops of two traction brackets away from the rotating rods. Through the setting of the traction holes, it is convenient to connect with the traction end of a tractor, and the traction brackets and the rotating rods can rotate at an appropriate angle around the central axis of the rotating rods.

[0012] Preferably, limit rings are fixedly sleeved at one end of two rotating rods. Second screws are threadedly embedded on one side of two limit rings. Under the action of the threaded fit between the limit rings and the second screws, it can be ensured that the second screws will not disengage from the limit rings.

[0013] Preferably, multiple limit holes are formed in a circumferential array on one side of each of the two U-shaped plates. One end of each of the two second screws is respectively movably embedded inside some of the limit holes. By inserting the second screws into the limit holes, the limit on the limit rings can be achieved.

[0014] Preferably, mounting blocks I are fixedly installed on the opposite sides of the first mounting strip near the top. Bolts I are arranged on the tops of the two mounting blocks I. On the opposite sides of the multiple second mounting strips near the top, two mounting blocks II are symmetrically and fixedly installed. Bolts II are arranged on the tops of the multiple mounting blocks II. With the cooperation of the mounting blocks I and bolts I and the mounting blocks II and bolts II, this device can be installed at the bottom of a trailer caravan.

[0015] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0016] 1. In the present utility model, by rotating the first screw rod by hand, the first screw rod can move outward from the inside of the adjustment hole and disengage, thereby releasing the limit on the second mounting strip. At this time, the second mounting strip can be pulled to the side away from the first mounting strip, so that the round rod and the movable block slide inside the movable groove, and at the same time, the compression spring is stretched. When the two U-shaped plates are adjusted to the appropriate distance, the first screw rod is rotated in the reverse direction and inserted into the adjustment hole to realize the limit on the second mounting strip. In this way, it can be installed according to different models of trailer caravans without the need for matching and separate production, thereby improving the applicability of the reverse towing frame.

[0017] 2. In the present utility model, by rotating the towing bracket upward by hand, the rotating rod is driven to rotate upward around the central axis of the rotating rod, so that the towing bracket is kept in a vertical state. Then, the second screw rod is rotated in the reverse direction and inserted into the limit hole to limit the limit ring, so that the rotating rod cannot rotate. In this way, when it is not necessary to tow the trailer caravan, it is convenient to store the towing bracket. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a reverse towing frame for a trailer caravan provided by the present utility model;

[0019] Figure 2 is a bottom view structural diagram of a reverse towing frame for a trailer caravan provided by the present utility model;

[0020] Figure 3 is a reverse towing frame for a trailer caravan provided by the present utility model Figure 2 and is an enlarged structural diagram at A in the figure;

[0021] Figure 4 is a sectional structural diagram of a reverse towing frame for a trailer caravan provided by the present utility model.

[0022] Legend Explanation:

[0023] 1. Installation bar 1; 101. Round rod; 102. Installation bar 2; 103. Installation block 1; 104. Bolt 1; 105. Installation block 2; 106. Bolt 2; 107. Adjustment hole; 108. Screw rod 1; 109. Movable groove; 110. Movable block; 111. Compression spring; 2. U-shaped plate; 201. Rotating rod; 202. Traction bracket; 203. Traction hole; 204. Limit ring; 205. Screw rod 2; 206. Limit hole. Detailed implementation mode

[0024] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0025] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0026] Embodiment 1, as Figures 1 to 4 shown, the present utility model provides a reverse traction frame for a trailer caravan, including: installation bar 1 and a plurality of installation bars 2 (102), and further including: a plurality of round rods 101, which are respectively symmetrically and fixedly installed on the opposite sides of installation bar 1 in pairs. A movable groove 109 is provided inside each of the plurality of installation bars 2 (102). The outer surfaces of the plurality of round rods 101 are respectively movably embedded inside the plurality of movable grooves 109. One end of each of the plurality of round rods 101 is fixedly installed with a movable block 110. The outer surfaces of the plurality of movable blocks 110 are respectively movably embedded inside the plurality of movable grooves 109. A plurality of adjustment holes 107 are equidistantly provided on the outer surfaces of the plurality of round rods 101. One end of each of the plurality of screw rods 108 is threadedly embedded near the bottom of each of the plurality of installation bars 2 (102) close to installation bar 1. One end of each of the plurality of screw rods 108 is respectively movably embedded inside a plurality of the adjustment holes 107 among them. A compression spring 111 is movably embedded inside each of the plurality of movable grooves 109. One end of each of the plurality of compression springs 111 is fixedly installed at one end of each of the plurality of round rods 101. The other end of each of the plurality of compression springs 111 is fixedly installed on one side of the inner wall of each of the plurality of movable grooves 109. Installation blocks 1 (103) are fixedly installed on the opposite sides near the top of installation bar 1. Bolts 1 (104) are provided on the tops of the two installation blocks 1 (103). Two installation blocks 2 (105) are symmetrically and fixedly installed on the opposite sides near the top of each of the plurality of installation bars 2 (102). Bolts 2 (106) are provided on the tops of the plurality of installation blocks 2 (105).

[0027] In this embodiment, by manually rotating the first screw rod 108, and under the action of the threaded engagement between the first screw rod 108 and the second mounting strip 102, the first screw rod 108 can move outward from the inside of the adjustment hole 107 and disengage, thereby releasing the limit on the second mounting strip 102. At this time, the second mounting strip 102 can be pulled toward the side away from the first mounting strip 1, so that the round rod 101 and the movable block 110 slide inside the movable groove 109, and at the same time, the compression spring 111 is stretched. When the two U-shaped plates 2 are adjusted to the appropriate distance, then rotate the first screw rod 108 in the reverse direction to make it insert into the inside of the adjustment hole 107 to realize the limit on the second mounting strip 102. Then, through the cooperation of the first mounting block 103 and the first bolt 104 with the second mounting block 105 and the second bolt 106, this device can be installed at the bottom of the trailer caravan. In this way, it can be installed according to different models of trailer caravans without the need for separate production, thereby improving the applicability of the reverse towing frame.

[0028] Embodiment 2, as Figures 1 to 4 shown, the multiple second mounting strips 102 are evenly divided into two groups. U-shaped plates 2 are fixedly installed on the sides of the two groups of second mounting strips 102 away from the first mounting strip 1. Rotating rods 201 are movably embedded on the opposite sides of the two arms of the two U-shaped plates 2. Towing brackets 202 are movably sleeved on the outer surfaces of the two rotating rods 201. Towing holes 203 are formed at the tops of the two towing brackets 202 away from the rotating rods 201. Limiting rings 204 are fixedly sleeved on one ends of the two rotating rods 201. Second screw rods 205 are threadedly embedded on one sides of the two limiting rings 204. A plurality of limiting holes 206 are formed in a circumferential array on one side of each of the two U-shaped plates 2. One ends of the two second screw rods 205 are respectively movably embedded in two of the limiting holes 206.

[0029] In this embodiment, by inserting the towing end of the towing vehicle into the towing hole 203 to connect it with the towing bracket 202, when the towing vehicle moves, the reverse towing frame can be towed, thereby driving the trailer caravan to move. Before towing the trailer caravan, it is necessary to manually rotate the second screw rod 205, and under the action of the threaded engagement between the second screw rod 205 and the limiting ring 204, the second screw rod 205 can be disengaged from the inside of the limiting hole 206 to release the limit on the limiting ring 204, so that the rotating rod 201 can rotate, and the towing bracket 202 and the rotating rod 201 can rotate around the central axis of the rotating rod 201 by an appropriate angle, which is convenient for the towing vehicle to tow the reverse towing frame. When it is not necessary to tow the trailer caravan, by manually rotating the towing bracket 202 upward to drive the rotating rod 201 to rotate upward around the central axis of the rotating rod 201 to keep the towing bracket 202 in a vertical state, and then rotating the second screw rod 205 in the reverse direction to make it insert into the inside of the limiting hole 206 to limit the limiting ring 204, so that the rotating rod 201 cannot rotate. In this way, when it is not necessary to tow the trailer caravan, it is convenient to store the towing bracket 202.

[0030] Working principle: When in use, first, the distance between the two U-shaped plates 2 can be adjusted according to the length of the towed caravan. By manually rotating the first screw 108, and under the action of the threaded fit between the first screw 108 and the second mounting strip 102, the first screw 108 can move outward from the inside of the adjustment hole 107 and disengage, thus releasing the limit on the second mounting strip 102. At this time, the second mounting strip 102 can be pulled toward the side away from the first mounting strip 1, so that the round rod 101 and the movable block 110 slide inside the movable groove 109, and simultaneously stretch the compression spring 111. When the two U-shaped plates 2 are adjusted to the appropriate distance, rotate the first screw 108 in the reverse direction to make it insert into the adjustment hole 107 to realize the limit on the second mounting strip 102. Then, through the cooperation of the first mounting block 103 and the first bolt 104 with the second mounting block 105 and the second bolt 106, this device can be installed at the bottom of the towed caravan. In this way, it can be installed according to different models of towed caravans without the need for separate production, thereby improving the applicability of the reverse towing frame. By inserting the towing end of the towing vehicle into the towing hole 203 to connect it with the towing bracket 202, when the towing vehicle moves, it can tow the reverse towing frame, thereby driving the towed caravan to move. Before towing the towed caravan, it is necessary to manually rotate the second screw 205. Under the action of the threaded fit between the second screw 205 and the limit ring 204, the second screw 205 can be disengaged from the inside of the limit hole 206 to release the limit on the limit ring 204, so that the rotating rod 201 can rotate, and the towing bracket 202 and the rotating rod 201 can rotate around the central axis of the rotating rod 201 by an appropriate angle, which is convenient for the towing vehicle to tow the reverse towing frame. When it is not necessary to tow the towed caravan, by manually rotating the towing bracket 202 upward to drive the rotating rod 201 to rotate upward around the central axis of the rotating rod 201 to keep the towing bracket 202 in a vertical state, and then rotating the second screw 205 in the reverse direction to make it insert into the limit hole 206 to limit the limit ring 204, so that the rotating rod 201 cannot rotate. In this way, when it is not necessary to tow the towed caravan, it is convenient to store the towing bracket 202.

[0031] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A reverse towing frame for a trailer caravan, comprising: An installation bar one (1) and a plurality of installation bars two (102), characterized in that it further comprises: A plurality of round rods (101), which are respectively and symmetrically fixedly installed on the opposite sides of the installation bar one (1) in pairs. An activity groove (109) is opened inside each of the plurality of installation bars two (102). The outer surfaces of the plurality of round rods (101) are respectively movably embedded inside the plurality of activity grooves (109). One end of each of the plurality of round rods (101) is fixedly installed with an activity block (110). The outer surfaces of the plurality of activity blocks (110) are respectively movably embedded inside the plurality of activity grooves (109).

2. The reverse towing frame of a towable caravan according to claim 1, characterized in that: A plurality of adjusting holes (107) are equidistantly opened on the outer surfaces of the plurality of round rods (101). One end of each of the plurality of installation bars two (102) close to the bottom of the installation bar one (1) is threadedly embedded with a screw rod one (108). One end of each of the plurality of screw rods one (108) is respectively movably embedded inside a plurality of the adjusting holes (107).

3. The reverse towing frame of a towed caravan according to claim 2, characterized in that: A compression spring (111) is movably embedded inside each of the plurality of activity grooves (109). One end of each of the plurality of compression springs (111) is respectively fixedly installed at one end of the plurality of round rods (101). The other end of each of the plurality of compression springs (111) is respectively fixedly installed on one side of the inner wall of the plurality of activity grooves (109).

4. The reverse towing frame of a towed caravan according to claim 2, characterized in that: The plurality of installation bars two (102) are evenly divided into two groups. A U-shaped plate (2) is fixedly installed on the side of each of the two groups of installation bars two (102) away from the installation bar one (1). A rotating rod (201) is movably embedded on the opposite sides of the two arms of each of the two U-shaped plates (2).

5. The reverse towing frame of a towed caravan according to claim 4, characterized in that: A traction bracket (202) is movably sleeved on the outer surfaces of the two rotating rods (201). A traction hole (203) is opened at the top of each of the two traction brackets (202) away from the rotating rod (201).

6. The reverse towing frame of a towed caravan according to claim 5, characterized in that: A limiting ring (204) is fixedly sleeved on one end of each of the two rotating rods (201). A screw rod two (205) is threadedly embedded on one side of each of the two limiting rings (204).

7. The reverse towing frame of a trailer caravan according to claim 6, characterized in that: A plurality of limiting holes (206) are arranged in a circumferential array on one side of each of the two U-shaped plates (2). One end of each of the two screw rods two (205) is respectively movably embedded inside two of the limiting holes (206).

8. The reverse towing frame of a trailer caravan according to claim 4, characterized in that: An installation block one (103) is fixedly installed on the opposite sides of the installation bar one (1) close to the top. A bolt one (104) is arranged on the top of each of the two installation blocks one (103). Two installation blocks two (105) are symmetrically and fixedly installed on the opposite sides of each of the plurality of installation bars two (102) close to the top. A bolt two (106) is arranged on the top of each of the plurality of installation blocks two (105).

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