Flat folding frameless trailer with traction guide frame

Abstract

The invention discloses a flat-folding frameless trailer with a traction guide frame, and belongs to the technical field of flat-folding frameless trailers. The front cross rod and the rear cross rod are mounted at the bottom of the vertical rod; the hinge block is mounted on the cross rod; the front vertical rod and the rear vertical rod are hinged to the hinge block, a front rod sleeve is installed on the front vertical rod, a rear rod sleeve is installed on the rear vertical rod, and the rear rod sleeve is hinged to the front rod sleeve; the front inclined rod is hinged to the front cross rod; the rear inclined rod is hinged to the rear cross rod; a front folding rod is hinged between the front inclined rod and the rear inclined rod, and a rear folding rod is hinged between the rear inclined rod and the front inclined rod. According to the flat-folding frameless trailer with the traction guide frame, by arranging the simple folding assembly, the total weight of the trailer is reduced, a worker can conveniently and rapidly unfold and fold the trailer, by arranging the guide mechanism, the advancing direction of the trailer can be conveniently dragged and guided, and the trailer is convenient to use. And the direction of the cart is controlled.

Description

Technical Field

[0001] The present application relates to the technical field of flat-folding frameless trailers, and in particular to a flat-folding frameless trailer with a traction guide frame. Background Art

[0002] A trailer usually refers to a vehicle pulled by an external power (tractor or manpower). It is widely used in road clearance, cargo transportation and other fields. The working principle of the trailer mainly depends on the power output of the external power. It is connected to the trailer through a connecting device (such as a hook, a tow bar, a guide frame, etc.) to provide traction for the trailer. During the traction process, the trailer moves with the external power to complete tasks such as hauling goods or clearing roads.

[0003] For example, the patent with publication number CN217260229 U specifically discloses a trailer device and a trailer. The trailer device provided by the patent relies on a towing rod for towing and moving, and is loaded by the chassis seat part. The front wheel assembly includes a steering part and a brake part, so that the trailer relies on external towing force to achieve free steering, active braking when parking, and active brake release when driving. Therefore, when the power supply vehicle is turning, the steering part is combined with a bearing, so that the trailer is easy to turn when it is overloaded; at the same time, the brake part does not rely on an external brake device, and automatically brakes when parking through the change of the towing rod position, and automatically releases the brake when the towing rod is towed. When the towing rod is not towed, it automatically brakes, which reduces the manufacturing cost of the external brake device for the product, improves the operability of the steering, and is convenient to use;

[0004] In the implementation of the above patent, in order to make the trailer have sufficient cargo carrying capacity, the size of the trailer is generally large, so that the entire device of the trailer occupies a large area. When the trailer needs to be stored, the trailer cannot be folded, which will take up a large space, making the storage of the trailer more difficult. Therefore, it is necessary to provide a flat-folding frameless trailer with a towing guide frame to solve the above problem.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a flat-folding frameless trailer with a traction guide frame, so as to achieve the effect of storing the cart to reduce the space occupied.

[0007] The technical solution adopted by the present application to solve its technical problems is: a flat-folding frameless trailer with a traction guide frame, comprising four groups of uprights, the four groups of uprights are divided into a first upright and a second upright; a front cross bar, the front cross bar is installed at the bottom of the first upright; a rear cross bar, the rear cross bar is installed at the bottom of the second upright; four groups of hinge blocks, the four groups of hinge blocks are installed on the front cross bar and the rear cross bar; a front vertical bar, the front vertical bar is hinged on the hinge block, and a front rod sleeve is installed on the front vertical bar; a rear vertical bar, the rear vertical bar is hinged on the hinge block, and the rear vertical bar is hinged on the hinge block. A rear rod sleeve is installed on the rod, and the rear rod sleeve is hinged with the front rod sleeve; a front rotating block, which is installed on the front cross bar; a front oblique rod, which is hinged on the front rotating block; a rear rotating block, which is installed on the rear cross bar; a rear oblique rod, which is hinged on the rear rotating block; wherein a front folding rod is hinged between the middle part of the upper end of the front oblique rod and the upper end of the rear oblique rod, and a rear folding rod is hinged between the middle part of the upper end of the rear oblique rod and the upper end of the front oblique rod, and the front folding rod and the rear folding rod are arranged in parallel.

[0008] Furthermore, damping rings are arranged at the hinge points between the oblique rod and the folding rod, the oblique rod and the cross rod, and the vertical rod and the vertical rod.

[0009] Furthermore, a front wheel mechanism is provided at the bottom of the first vertical pole, and the front wheel mechanism comprises a fixing rod fixedly mounted on the front cross bar, a front wheel frame is fixedly mounted on the lower end of the fixing rod, and a front wheel is rotatably mounted on the front wheel frame.

[0010] Furthermore, a rear wheel mechanism is arranged at the bottom of the second vertical pole, and the rear wheel mechanism has a rear wheel frame detachably mounted on the second vertical pole, and a rear wheel is rotatably mounted on the rear wheel frame.

[0011] Furthermore, a guide mechanism is installed on the front cross bar.

[0012] Furthermore, the guide mechanism includes a base fixedly mounted on the front cross bar, a bottom shaft fixedly mounted on the base, a rotating rod rotatably arranged on the bottom shaft; a hollow chamber is arranged at the upper end of the rotating rod, a connecting sleeve is fixedly inserted in the hollow chamber, a bottom pull rod is inserted inside the connecting sleeve, a connecting shaft is installed between the bottom pull rod and the connecting sleeve, and a top pull rod is slidably arranged inside the upper end of the bottom pull rod.

[0013] Furthermore, a pull sleeve is fixedly installed on the upper end of the bottom pull rod, a through slot is opened on the pull sleeve, a pressing part is slidably arranged on the through slot, a spring is arranged between the pressing part and the through slot; a convex rod is arranged on the pressing part, and two groups of matching holes are arranged on the top pull rod.

[0014] Furthermore, a handle is fixedly mounted on the upper end of the jacking rod.

[0015] Furthermore, a guardrail is rotatably mounted on the rear cross bar.

[0016] Furthermore, two groups of middle cross bars are fixedly installed on the two groups of front vertical bars on the same side, and a middle vertical bar is fixedly installed between the two groups of middle cross bars on the same side.

[0017] The flat-folding frameless trailer with a traction guide frame provided in the present application has the following beneficial effects:

[0018] 1. By providing a simple folding assembly, the overall weight of the trailer is reduced, and it is convenient for the staff to quickly unfold and fold the trailer.

[0019] 2. By providing a guide mechanism, the forward direction of the cart can be conveniently pulled and guided to control the direction of the cart.

[0020] 3. By installing guardrails, the goods placed on the trailer can be protected to prevent them from falling off the trailer.

[0021] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0023] In the attached picture:

[0024] Figure 1 The overall schematic diagram of a flat-folding frameless trailer with a traction guide frame in this application Figure 1 ;

[0025] Figure 2 This is an exploded schematic diagram of the overall structure of a flatbed truck frame in this application;

[0026] Figure 3 The overall schematic diagram of a flat-folding frameless trailer with a traction guide frame in this application Figure 2 ;

[0027] Figure 4 for Figure 1 Schematic diagram of the local structure at A in the middle;

[0028] Figure 5 for Figure 1 Schematic diagram of the local structure at B in the middle;

[0029] Figure 6for Figure 2 Schematic diagram of the local structure at C in the middle;

[0030] Figure 7 for Figure 2 Schematic diagram of the local structure at D in the middle;

[0031] Figure 8 for Figure 2 Schematic diagram of the local structure at E in the middle;

[0032] Fig. 9 for Figure 3 Schematic diagram of the local structure at F in the middle;

[0033] Fig.10 for Figure 3 Schematic diagram of the local structure at G in the middle;

[0034] Among them, the reference numerals in the figure are:

[0035] 1. Frame mechanism; 11. Front vertical bar; 12. Rear vertical bar; 13. Front bar sleeve; 14. Rear bar sleeve; 15. Vertical bar; 16. Articulated block; 17. Front rotating block; 18. Front cross bar; 19. Rear cross bar; 110. Middle cross bar; 111. Middle vertical bar; 112. Front oblique bar; 113. Rear oblique bar; 114. Front folding bar; 115. Rear folding bar; 116. Rear rotating block; 117. Guardrail;

[0036] 2. front wheel mechanism; 21. front wheel; 22. front wheel frame; 23. fixing rod;

[0037] 3. rear wheel mechanism; 31. rear wheel; 32. rear wheel frame;

[0038] 4. Guide mechanism; 41. Bottom pull rod; 42. Top pull rod; 43. Handle; 44. Base; 45. Rotating rod; 46. Connecting sleeve; 47. Bottom shaft; 48. Connecting shaft; 49. Pull sleeve; 491. Through groove; 410. Pressing part. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0041] like Figure 1-Figure 2 and Figure 4 As shown, the present application provides a flat-folding frameless trailer with a traction guide frame, including a frame mechanism 1, which is the main structure of the trailer and is used to carry cargo on the trailer. The frame mechanism 1 includes four groups of upright poles 15 located around the trailer. For convenience of description, Figure 1 The vertical pole 15 located on the left side is defined as the first vertical pole, and the vertical pole 15 located on the right side is defined as the second vertical pole;

[0042] At the same time, a front cross bar 18 is fixedly installed at the bottom of the two groups of first vertical poles, and a rear cross bar 19 is fixedly installed at the bottom of the two groups of first vertical poles. The bottom of the vertical pole 15 is fixed by the cross bar, thereby further strengthening the strength of the vertical pole 15;

[0043] The front crossbar 18 and the rear crossbar 19 are both fixedly mounted with hinge blocks 16, wherein the front vertical bar 11 is rotatably mounted on the hinge block 16 at the front end, and the rear vertical bar 12 is rotatably mounted on the hinge block 16 at the rear end, so that the front vertical bar 11 and the rear vertical bar 12 can both rotate around the hinge block 16 in a vertical plane;

[0044] like Figure 1 and Figure 4 As shown, a front rod sleeve 13 is fixedly installed on the front vertical rod 11 at a position away from the hinge block 16, and a rear rod sleeve 14 is fixedly installed on the rear vertical rod 12 at a position away from the hinge block 16, and the front rod sleeve 13 and the rear rod sleeve 14 are hinged to each other, so that the front vertical rod 11 and the rear vertical rod 12 are connected into a whole through the front rod sleeve 13 and the rear rod sleeve 14, and can rotate relative to each other;

[0045] At the same time, two groups of middle cross bars 110 are fixedly installed on the two groups of front vertical bars 11 on the same side, and a middle vertical bar 111 is fixedly installed between the two groups of middle cross bars 110 on the same side, so that a stable bottom frame structure is formed by the arrangement of the middle cross bars 110 and the middle vertical bars 111;

[0046] like Figure 1-Figure 3 , Figure 5 and Fig. 9 As shown, a folding assembly is provided at the bottom of the bottom frame structure, and the folding assembly includes a front rotating block 17 fixedly mounted on a front cross bar 18, and a front oblique rod 112 is rotatably provided at the lower end of the front rotating block 17, so that the front oblique rod 112 can be horizontally rotated around the front rotating block 17;

[0047] At the same time, a rear rotating block 116 is fixedly installed on the rear cross bar 19, and a rear oblique rod 113 is rotatably arranged at the lower end of the rear rotating block 116, so that the rear oblique rod 113 can rotate in the horizontal direction around the rear rotating block 116, and the front oblique rod 112 and the rear oblique rod 113 are arranged diagonally;

[0048] At the same time, a front folding rod 114 is hinged between the middle of the upper end of the front oblique rod 112 and the upper end of the rear oblique rod 113, and a rear folding rod 115 is hinged between the middle of the upper end of the rear oblique rod 113 and the upper end of the front oblique rod 112, so that the front oblique rod 112 and the rear oblique rod 113 are connected to form a foldable whole, and the front folding rod 114 and the rear folding rod 115 are arranged in parallel;

[0049] In summary, when the trailer is in the unfolded state, the first vertical pole and the second vertical pole are away from each other, and the front vertical pole 11 and the rear vertical pole 12 are in a horizontal position. At this time, the bottom frame of the trailer can be used to carry goods;

[0050] When the trailer needs to be stored, the front rod sleeve 13 and the rear rod sleeve 14 rotate relative to each other and rise, driving the front vertical rod 11 and the rear vertical rod 12 from a horizontal position to a vertical position. At this time, the front diagonal rod 112 and the rear diagonal rod 113 rotate horizontally. During the horizontal rotation of the front diagonal rod 112 and the rear diagonal rod 113, the front folding rod 114 and the rear folding rod 115 always remain in a parallel state, so that the trailer remains stable when folded;

[0051] In the above process, the first vertical pole and the second vertical pole are close to each other until the trailer is completely gathered, the four groups of vertical poles are completely stored together, and the highest points of the front pole sleeve 13 and the rear pole sleeve 14 are smaller than the highest point of the vertical pole 15, so that the trailer is in a stored state. The above frame structure 1 adopts a simple folding component, thereby reducing the overall weight of the flatbed truck and facilitating the staff to quickly unfold and fold the flatbed truck.

[0052] In this embodiment, damping rings (not shown in the figure) are provided at the hinge points of the diagonal rod and the folding rod, the diagonal rod and the horizontal rod, and the vertical rod and the vertical rod, so that the wear between the rods can be reduced when the rods rotate, and the noise during the rotation of the rods can be reduced, thereby extending the life of the rods.

[0053] In order to make the trailer moveable, Figure 1-Figure 2 and Fig. 9 As shown, a front wheel mechanism 2 is provided at the bottom of the front cross bar 18, and a rear wheel mechanism 3 is provided at the bottom of the vertical bar 15. The front wheel mechanism 2 and the rear wheel mechanism 3 work together to drive the trailer to move;

[0054] At the same time, the front wheel mechanism 2 includes a fixed rod 23 fixedly mounted on the front crossbar 18, and a front wheel frame 22 is fixedly mounted on the lower end of the fixed rod 23, and a front wheel 21 is rotatably mounted on the front wheel frame 22;

[0055] The rear wheel mechanism 3 includes a rear wheel frame 32 fixedly mounted at the lower end of the upright 15, and a rear wheel 31 is rotatably mounted on the rear wheel frame 32, so that the rear wheel 31 is suitable for cooperating with the front wheel 21 to drive the trailer to move;

[0056] In order to facilitate the staff to operate the cart, Figure 1-Figure 2 and Figure 7-Figure 8 As shown, a guide mechanism 4 is installed on the front crossbar 18, and the guide mechanism 4 is used to connect with an external power or be pushed by manpower to push the cart to move;

[0057] The guide mechanism 4 includes a base 44 fixedly mounted on the front crossbar 18, a bottom shaft 47 fixedly mounted on the base 44, and a rotating rod 45 rotatably arranged on the bottom shaft 47, so that the rotating rod 45 can rotate around the bottom shaft 47;

[0058] At the same time, a hollow chamber (not shown in the figure) is provided at the upper end of the rotating rod 45, and a connecting sleeve 46 is fixedly inserted in the hollow chamber, so that the connecting sleeve 46 can rotate synchronously with the rotating rod 45;

[0059] A bottom tie rod 41 is inserted inside the connecting sleeve 46, and a connecting shaft 48 is installed between the bottom tie rod 41 and the connecting sleeve 46, so that the connecting sleeve 46 and the bottom tie rod 41 are fixed by the connecting shaft 48, and then the bottom tie rod 41 can rotate synchronously with the connecting sleeve 46;

[0060] like Figure 2 and Figure 8 As shown, a top pull rod 42 is slidably disposed inside the upper end of the bottom pull rod 41, and the top pull rod 42 can slide out of the bottom pull rod 41 to facilitate operation by the staff, and the top pull rod 42 can be stored in the bottom pull rod 41 to reduce the occupied space;

[0061] Meanwhile, a pull sleeve 49 is fixedly installed on the upper end of the bottom tie rod 41, a through slot 491 is formed on the pull sleeve 49, and a pressing portion 410 is slidably arranged on the through slot 491. It should be noted that a spring (not shown in the figure) is arranged between the pressing portion 410 and the through slot 491, so that in the initial state, the pressing portion 410 is received inside the through slot 491 under the action of the spring;

[0062] A protruding rod (not shown in the figure) is provided on the pressing portion 410, and two groups of matching holes (not shown in the figure) are provided on the top pull rod 42. For the convenience of explanation, the two groups of matching holes are respectively defined as a first matching hole and a second matching hole, wherein the first matching hole is located at the lower end of the top pull rod 42, so that when the top pull rod 42 is pulled out, the protruding rod is inserted into the inside of the first matching hole, so as to fix the top pull rod 42, and the second matching hole is located at the upper end of the top pull rod 42, so that when the top pull rod 42 is stored, the protruding rod is inserted into the inside of the second matching hole, so as to fix the top pull rod 42;

[0063] In this embodiment, a handle 43 is fixedly mounted on the upper end of the top pull rod 42 for the convenience of the staff to hold.

[0064] In this embodiment, a guardrail 117 is rotatably mounted on the rear crossbar 19 so that the guardrail 117 can be rotatably stored and can protect the goods on the cart when erected.

[0065] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flat-folding frameless trailer with a traction guide frame, characterized in that: include: Four groups of upright poles (15), wherein the four groups of upright poles (15) are divided into first upright poles and second upright poles; A front crossbar (18), the front crossbar (18) being mounted at the bottom of the first vertical pole; A rear crossbar (19), which is mounted on the bottom of the second vertical pole; Four groups of hinge blocks (16), the four groups of hinge blocks (16) being mounted on the front cross bar (18) and the rear cross bar (19); A front vertical rod (11), the front vertical rod (11) is hinged on the hinge block (16), and a front rod sleeve (13) is installed on the front vertical rod (11); A rear vertical rod (12), the rear vertical rod (12) being hinged on the hinge block (16), a rear rod sleeve (14) being mounted on the rear vertical rod (12), and the rear rod sleeve (14) being hinged to the front rod sleeve (13); A front rotating block (17), the front rotating block (17) being mounted on the front crossbar (18); A front oblique rod (112), the front oblique rod (112) being hinged on the front rotating block (17); A rear rotating block (116), the rear rotating block (116) being mounted on the rear cross bar (19); A rear oblique rod (113), the rear oblique rod (113) being hinged on the rear rotating block (116); A front folding rod (114) is hinged between the middle of the upper end of the front oblique rod (112) and the upper end of the rear oblique rod (113), and a rear folding rod (115) is hinged between the middle of the upper end of the rear oblique rod (113) and the upper end of the front oblique rod (112), and the front folding rod (114) and the rear folding rod (115) are arranged in parallel.

2. A flat-folding frameless trailer with a traction guide frame according to claim 1, characterized in that: Damping rings are arranged at the hinge points between the oblique rod and the folding rod, the oblique rod and the horizontal rod, and the vertical rod and the vertical rod.

3. A flat-folding frameless trailer with a traction guide frame according to claim 2, characterized in that: A front wheel mechanism (2) is arranged at the bottom of the first vertical pole, the front wheel mechanism (2) comprising a fixing rod (23) fixedly mounted on the front cross bar (18), a front wheel frame (22) fixedly mounted on the lower end of the fixing rod (23), and a front wheel (21) rotatably mounted on the front wheel frame (22).

4. A flat-folding frameless trailer with a traction guide frame according to claim 3, characterized in that: A rear wheel mechanism (3) is arranged at the bottom of the second vertical pole. The rear wheel mechanism (3) comprises a rear wheel frame (32) detachably mounted on the second vertical pole, and a rear wheel (31) is rotatably mounted on the rear wheel frame (32).

5. The flat-folding frameless trailer with a traction guide frame according to claim 4, characterized in that: A guide mechanism (4) is installed on the front crossbar (18).

6. A flat-folding frameless trailer with a traction guide frame according to claim 5, characterized in that: The guide mechanism (4) comprises a base (44) fixedly mounted on the front crossbar (18), a bottom shaft (47) fixedly mounted on the base (44), and a rotating rod (45) rotatably arranged on the bottom shaft (47); The upper end of the rotating rod (45) is provided with a hollow chamber, in which a connecting sleeve (46) is fixedly inserted, a bottom pull rod (41) is inserted inside the connecting sleeve (46), a connecting shaft (48) is installed between the bottom pull rod (41) and the connecting sleeve (46), and a top pull rod (42) is slidably arranged inside the upper end of the bottom pull rod (41).

7. A flat-folding frameless trailer with a traction guide frame according to claim 6, characterized in that: A pull sleeve (49) is fixedly mounted on the upper end of the bottom pull rod (41), a through slot (491) is provided on the pull sleeve (49), a pressing portion (410) is slidably provided on the through slot (491), and a spring is provided between the pressing portion (410) and the through slot (491); The pressing portion (410) is provided with a protruding rod, and the jacking rod (42) is provided with two groups of matching holes.

8. The flat-folding frameless trailer with a traction guide frame according to claim 7, characterized in that: A handle (43) is fixedly mounted on the upper end of the jacking rod (42).

9. A flat-folding frameless trailer with a traction guide frame according to claim 8, characterized in that: A guardrail (117) is rotatably mounted on the rear crossbar (19).

10. The flat-folding frameless trailer with a traction guide frame according to claim 9, characterized in that: Two groups of middle cross bars (110) are fixedly mounted on the two groups of front vertical bars (11) on the same side, and a middle vertical bar (111) is fixedly mounted between the two groups of middle cross bars (110) on the same side.

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