A flatbed trailer with a protective mechanism

Abstract

This utility model relates to the field of flatbed trailers and discloses a flatbed trailer with a protective mechanism, including a bearing surface, driving wheels, and a pull rod. A convenient protective mechanism is provided at one end of the upper surface of the bearing surface, and a temporary bearing mechanism is provided in the middle of the bearing surface. The convenient protective mechanism includes two connecting ends, with a locking end fixedly connected to the upper surface of each connecting end. In this utility model, the device vertically lifts the protective baffle at the end of the pull rod, aligning the pin at the end of the baffle with the locking end on the pull rod and inserting it. The pin then slides into the insertion groove, completing the initial installation. Subsequently, the rotating shaft in the movable groove is rotated, causing the connected retaining ring to deflect until the retaining ring penetrates the wall of the insertion groove and engages with the pin. Finally, the abutment screw is tightened, allowing it to pass through the movable groove and be fixed to the abutment part at the end of the retaining ring. This design allows the protective baffle to be quickly activated and securely fixed during use, enhancing both protection and practicality.

Description

Technical Field

[0001] This utility model relates to the field of flatbed trailers, and more particularly to a flatbed trailer with a protective mechanism. Background Technology

[0002] Flatbed trailers are lightweight, manually operated transport tools that lack their own power and require manual pushing or pulling. Their main body is a low, flat cargo platform, typically equipped with casters for easy movement. They are widely used in warehouses, workshops, construction sites, and other similar settings for short-distance transport of heavy objects such as containers, building materials, and equipment, effectively reducing labor load and improving efficiency.

[0003] However, most flatbed trailers do not have flexible, liftable, and secure protective barriers on their load-bearing surfaces. If workers are dragging heavy, angular items quickly, these items may slide and tilt towards the front of the load-bearing surface, where the lever is located, due to inertia if the trailer suddenly stops, potentially injuring the workers. Furthermore, most flatbed trailers have fixed load-bearing surfaces. If there is a shortage of trailers and a temporary increase in carrying capacity is needed, the lack of trailers with expandable load-bearing surfaces will hinder the improvement of carrying efficiency and reduce the practicality of the equipment.

[0004] Therefore, those skilled in the art have provided a flatbed trailer with a protective mechanism to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a flatbed trailer with a protective mechanism. The device involves vertically lifting a protective baffle at one end of the load-bearing surface, i.e., the end where the pull rod is located. A pin, whose ends are already detached from the fixing bolts on one side of the protective baffle, is inserted into the locking end fixed to the lower side of the pull rod's outer wall. This allows one end of the pin to slide into the insertion groove, completing the initial installation. Then, the rotating shaft in the movable groove on the locking end is twisted, causing the retaining ring connected to the shaft to shift at an angle until one end of the retaining ring penetrates the outer wall of the insertion groove and forms a locking connection with the slidably inserted pin. Finally, the threaded abutment screw on one side of the locking end is twisted, allowing it to penetrate one side of the movable groove's outer wall and form a locking connection with the abutment portion at the end of the retaining ring. This ensures the protective baffle is promptly activated and fixed, and when not in use, it can be laid flat on one end of the load-bearing surface without occupying space, improving the device's protective capabilities and thus its practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A flatbed trailer with a protective mechanism includes a load-bearing surface, driving wheels and a tie rod. A convenient protective mechanism is provided at one end of the upper surface of the load-bearing surface, and a temporary load-bearing mechanism is provided in the middle of the interior of the load-bearing surface. The convenient protective mechanism includes two connecting ends. A locking end is fixedly connected to the upper end face of the connecting end. A movable groove is opened in the middle of one side end face of the locking end. A rotating shaft is rotatably connected to one side of the outer wall of the movable groove. An abutment part is fixedly connected to one side of the outer wall of the rotating shaft. A retaining ring is fixedly connected to one end of the abutment part. An abutment screw is threadedly connected to the middle of one side end face of the locking end. An insertion groove is opened at the upper end of the locking end. A protective baffle is rotatably connected to one end of the upper end face of the bearing surface. Limiting parts are fixedly connected to both ends of one side end face of the protective baffle. A pin is slidably connected to one side of the outer wall of the limiting part. A fixing bolt is threadedly connected to the middle of the upper end face of the limiting part. Through the above technical solution, the device vertically lifts the protective baffle at one end of the bearing surface, i.e., the end where the tie rod is located, and inserts the pins, whose ends have been released from the fixing bolt limit on one side of the protective baffle, into the locking end fixedly connected to the lower end of the outer wall of the tie rod. This allows one end of the pin to slide into the insertion groove, completing the initial installation. Then, the rotating shaft in the movable groove on the locking end is twisted, causing the retaining ring connected to the rotating shaft to shift at an angle until one end of the retaining ring penetrates the outer wall of the insertion groove and forms a locking connection with the slidably inserted pin. Finally, the abutment screw threaded to one side of the locking end is twisted, causing it to penetrate one side of the outer wall of the movable groove and form a locking connection with the abutment part at the end of the retaining ring. This allows the protective baffle to be activated and fixed in a timely manner, and when not in use, it can be laid flat on one end of the bearing surface without occupying space, improving the protective performance of the device and thus enhancing its practicality.

[0007] Furthermore, the temporary bearing mechanism includes a bidirectional threaded rod, a first bevel gear is fixedly connected to the middle of the outer wall of the bidirectional threaded rod, a second bevel gear is meshed with one side of the outer wall of the first bevel gear, a rotating rod is fixedly connected to one end of the second bevel gear, a small rotating handle is fixedly connected to one end of the rotating rod, a sliding groove is opened in the middle of one end face of the bearing surface, and an extension bearing plate is threaded to both ends of the outer wall of the bidirectional threaded rod. Through the above technical solution, the device rotates a small handle in the middle of one end face of the bearing surface, causing a rotating rod fixedly connected to one end to drive the first bevel gear to rotate. The first bevel gear then meshes with and drives the second bevel gear to rotate. The second bevel gear finally drives the bidirectional threaded rod rotatably connected to the middle of the bearing surface to rotate, causing the extended bearing plates sleeved on both ends of the outer wall of the bidirectional threaded rod to slide laterally to both ends of the bearing surface. Under non-high load conditions, they are stored inside the bearing surface on both sides, improving the temporary bearing capacity of the trailer and thus improving the practicality of the device.

[0008] Furthermore, each of the four corners of the lower end face of the bearing surface is provided with a movable wheel, and a pull rod is fixedly connected to one end of the upper end face of the bearing surface; With the above technical solution, the trailer can carry goods and be towed while moving freely.

[0009] Furthermore, a connecting end is fixedly connected to the lower end of one side of the outer wall of the pull rod, and one end of a pin is slidably connected to one side of the outer wall of the insertion slot; Through the above technical solution, the connecting end can serve as the connection point between the pull rod and the engaging end, thereby improving the structural strength of the engaging end.

[0010] Furthermore, one end of the retaining ring penetrates one side of the outer wall of the insertion groove and forms a locking connection with one end of the pin, and the lower end of the fixing bolt penetrates the middle of the upper end face of the limiting part and forms a locking connection with one end of the pin. Through the above technical solution, the pin can be fixed in place by the retaining ring and cannot be removed, thus ensuring that the protective baffle is always upright and plays a real protective role.

[0011] Furthermore, both ends of the lower end face of the extended bearing plate are fixedly connected with locking strips, which penetrate the lower end face of the bearing surface and form a sliding connection with it; Through the above technical solution, the locking strip plays a limiting role in the sliding of the expansion bearing plate, preventing it from sliding too far and thus detaching from the bearing surface.

[0012] Furthermore, an extended bearing plate is slidably connected to one side of the outer wall of the chute; Through the above technical solution, the groove plays a limiting role in the sliding of the extended bearing plate, allowing it to extend smoothly at both ends of the bearing surface.

[0013] This utility model has the following beneficial effects: 1. This utility model proposes a flatbed trailer with a protective mechanism. The device vertically lifts the protective baffle at one end of the bearing surface, i.e., the end where the pull rod is located, and inserts the pins, which are already detached from the fixing bolts at both ends of one end face of the protective baffle, into the locking end fixedly connected to the lower end of the outer wall of the pull rod. This allows one end of the pin to slide into the insertion groove, completing the initial installation. Then, the rotating shaft in the movable groove on the locking end is twisted, causing the retaining ring connected to the rotating shaft to shift at an angle until one end of the retaining ring penetrates the outer wall of the insertion groove and forms a locking connection with the slidably inserted pin. Finally, the abutment screw threaded to one end face of the locking end is twisted, causing it to penetrate one side of the outer wall of the movable groove and form a locking connection with the abutment part at the end of the retaining ring. This allows the protective baffle to be activated and fixed in time. When not in use, it can be laid flat on one end of the bearing surface without occupying space, improving the protective performance of the device and thus enhancing its practicality.

[0014] 2. The present invention proposes a flatbed trailer with a protective mechanism. The device rotates by turning a small handle in the middle of one end face of the bearing surface, causing a rotating rod fixedly connected to one end to drive a first bevel gear to rotate. The first bevel gear then meshes with and drives a second bevel gear to rotate. The second bevel gear finally drives a bidirectional threaded rod rotatably connected to the middle of the bearing surface to rotate, causing the extended bearing plates sleeved on both ends of the outer wall of the bidirectional threaded rod to slide laterally to both ends of the bearing surface. Under non-high load conditions, they are stored inside the bearing surface on both sides, improving the temporary bearing capacity of the trailer and thus improving the practicality of the device. Attached Figure Description

[0015] Figure 1 An isometric view of a flatbed trailer with a protective mechanism proposed in this utility model; Figure 2 A second-view isometric view of a flatbed trailer with a protective mechanism proposed in this utility model; Figure 3 This is a cross-sectional view of the engaging end of a flatbed trailer with a protective mechanism proposed in this utility model. Figure 4 This is a schematic diagram of a protective baffle for a flatbed trailer with a protective mechanism proposed in this utility model. Figure 5 An exploded structural diagram of a temporary load-bearing mechanism for a flatbed trailer with a protective structure proposed in this utility model; Figure 6 This is a third-view isometric drawing of a flatbed trailer with a protective mechanism proposed in this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Bearing surface; 2. Caster wheel; 3. Pull rod; 4. Convenient protective mechanism; 41. Connecting end; 42. Engaging end; 43. Movable groove; 44. Rotating shaft; 45. Abutting part; 46. Snap ring; 47. Abutting screw; 48. Insertion groove; 49. Protective baffle; 410. Limiting part; 411. Pin; 412. Fixing bolt; 5. Temporary bearing mechanism; 51. Bidirectional threaded rod; 52. First bevel gear; 53. Second bevel gear; 54. Rotating rod; 55. Small rotating handle; 56. Slide groove; 57. Extending bearing plate; 58. Locking strip. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Reference Figure 1-3 This utility model provides a specific implementation method: A flatbed trailer with a protective mechanism includes a load-bearing surface 1, driving wheels 2, and a pull rod 3. A convenient protective mechanism 4 is provided at one end of the upper surface of the load-bearing surface 1, and a temporary load-bearing mechanism 5 is provided in the middle of the interior of the load-bearing surface 1. The convenient protective mechanism 4 includes two connecting ends 41, and a locking end 42 is fixedly connected to the upper surface of the connecting end 41. A movable groove 43 is opened in the middle of one side end face of the locking end 42. A rotating shaft 44 is rotatably connected to one side of the outer wall of the movable groove 43, and a fixed connection is made to one side of the outer wall of the rotating shaft 44. A contact part 45 is provided, with a retaining ring 46 fixedly connected to one end of the contact part 45. A contact screw 47 is threadedly connected to the middle of one side end face of the engaging end 42. An insertion groove 48 is provided at the upper end of the engaging end 42. A protective baffle 49 is rotatably connected to one end of the upper end face of the bearing surface 1. Limiting parts 410 are fixedly connected to both ends of one side end face of the protective baffle 49. A pin 411 is slidably connected to one side of the outer wall of the limiting part 410. A fixing bolt 412 is threadedly connected to the middle of the upper end face of the limiting part 410. The device vertically lifts the protective baffle 49 at one end of the bearing surface 1, i.e., the end where the tie rod 3 is located, and inserts the pin 411, which has been detached from the fixing bolt 412 at both ends of one end face of the protective baffle 49, into the locking end 42 fixedly connected to the lower end of the outer wall of the tie rod 3. This allows one end of the pin 411 to slide into the insertion groove 48, completing the initial installation. Then, the rotating shaft 44 in the movable groove 43 on the locking end 42 is twisted, causing the retaining ring 46 connected to the rotating shaft 44 to shift at an angle until one end of the retaining ring 46 penetrates the outer wall of the insertion groove 48 and forms a locking connection with the slidably inserted pin 411. Finally, the abutment screw 47 threaded to one end face of the locking end 42 is twisted, allowing it to penetrate one side of the outer wall of the movable groove 43 and form a locking connection with the abutment part 45 at the end of the retaining ring 46. This allows the protective baffle 49 to be activated and fixed in time. When not in use, it can be laid flat on one end of the bearing surface 1 without occupying space, improving the protective performance of the device and thus enhancing its practicality.

[0019] Reference Figure 3-6The temporary support mechanism 5 includes a bidirectional threaded rod 51. A first bevel gear 52 is fixedly connected to the middle of the outer wall of the bidirectional threaded rod 51. A second bevel gear 53 is meshed with one side of the outer wall of the first bevel gear 52. A rotating rod 54 is fixedly connected to one end of the second bevel gear 53. A small rotating handle 55 is fixedly connected to one end of the rotating rod 54. A groove 56 is formed in the middle of one end face of the support surface 1. Both ends of the outer wall of the bidirectional threaded rod 51 are threadedly connected to an extended support plate 57. The device rotates by twisting the small rotating handle 55 in the middle of one end face of the support surface 1. The handle 55 causes the rotating rod 54, which is fixedly connected to one end, to drive the first bevel gear 52 to rotate. The first bevel gear 52 then meshes with and drives the second bevel gear 53 to rotate. The second bevel gear 53 finally drives the bidirectional threaded rod 51, which is rotatably connected to the middle of the bearing surface 1, to rotate. This causes the extended bearing plates 57, which are sleeved on both ends of the outer wall of the bidirectional threaded rod 51, to slide laterally to both ends of the bearing surface 1. Under non-high load conditions, they are stored inside the bearing surface 1 on both sides, which improves the temporary bearing capacity of the trailer and thus improves the practicality of the device. Each of the four corners of the lower end of the bearing surface 1 is equipped with a driving wheel 2, and a pull rod 3 is fixedly connected to one end of the upper end of the bearing surface 1. The trailer can be towed while carrying goods and can move freely. A connecting end 41 is fixedly connected to the lower end of one side of the outer wall of the pull rod 3, and one end of the pin 411 is slidably connected to one side of the outer wall of the insertion groove 48. The connecting end 41 can serve as the connection point between the pull rod 3 and the engaging end 42, thereby improving the structural strength of the engaging end 42. One end of the retaining ring 46 passes through one side of the outer wall of the insertion groove 48 and is engaged with one end of the pin 411. The lower end of the fixing bolt 412 passes through the middle of the upper surface of the limiting part 410 and is engaged with one end of the pin 411. The pin 411 can be fixed by the retaining ring 46 and cannot be dislodged, thereby making the protective baffle 49 always upright and playing a real protective role. Both ends of the lower end face of the extension bearing plate 57 are fixedly connected with a retaining strip 58. The retaining strip 58 penetrates the lower end face of the bearing surface 1 and forms a sliding connection with it. The retaining strip 58 plays a limiting role in the sliding of the extension bearing plate 57, preventing it from sliding out of place and thus detaching from the bearing surface 1. An extension bearing plate 57 is slidably connected to one side of the outer wall of the slide groove 56. The slide groove 56 limits the sliding of the extension bearing plate 57, allowing it to extend smoothly at both ends of the bearing surface 1.

[0020] Working principle: The device vertically lifts the protective baffle 49 at one end of the bearing surface 1, i.e., the end where the tie rod 3 is located, and inserts the pins 411, which are already detached from the fixing bolts 412 on one side of the protective baffle 49, into the engaging end 42 fixedly connected to the lower end of the outer wall of the tie rod 3. This allows one end of the pin 411 to slide into the insertion groove 48, completing the initial installation. Then, the rotating shaft 44 in the movable groove 43 on the engaging end 42 is twisted, causing the retaining ring 46 connected to the rotating shaft 44 to shift at an angle until one end of the retaining ring 46 penetrates the outer wall of the insertion groove 48 and forms an engaging connection with the slidably inserted pin 411. Finally, the abutment screw 47 threaded on one side of the engaging end 42 is twisted to make it... The device penetrates one side of the outer wall of the movable groove 43 and forms a locking connection with the abutment part 45 at the end of the retaining ring 46, thereby enabling the protective baffle 49 to be activated and fixed in time. The device rotates the small handle 55 in the middle of one end face of the bearing surface 1, causing the rotating rod 54 fixedly connected to one end to drive the first bevel gear 52 to rotate. The first bevel gear 52 then meshes and drives the second bevel gear 53 to rotate. The second bevel gear 53 finally drives the bidirectional threaded rod 51 rotatably connected to the middle of the inside of the bearing surface 1 to rotate, so that the extended bearing plate 57 sleeved on both ends of the outer wall of the bidirectional threaded rod 51 slides laterally to both ends of the bearing surface 1. Under non-high load conditions, it is stored in the inside of the bearing surface 1 on both sides, improving the temporary bearing capacity of the trailer.

[0021] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0022] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flatbed trailer with a protective mechanism, comprising a load-bearing surface (1), driving wheels (2), and a pull rod (3), characterized in that: A convenient protective mechanism (4) is provided at one end of the upper surface of the bearing surface (1), and a temporary bearing mechanism (5) is provided in the middle of the interior of the bearing surface (1). The convenient protective mechanism (4) includes two connecting ends (41). A locking end (42) is fixedly connected to the upper surface of each connecting end (41). A movable groove (43) is provided in the middle of one side of the locking end (42). A rotating shaft (44) is rotatably connected to one side of the outer wall of the movable groove (43). An abutment (45) is fixedly connected to one side of the outer wall of the rotating shaft (44). A retaining ring (46) is fixedly connected to one end of the abutment (45). The locking end (42) has one… A connecting screw (47) is threaded in the middle of the side end face. A plug groove (48) is provided at the upper end of the engaging end (42). A protective baffle (49) is rotatably connected to one end of the upper end face of the bearing surface (1). A limiting part (410) is fixedly connected to both ends of one side end face of the protective baffle (49). A pin (411) is slidably connected to one side of the outer wall of the limiting part (410). A fixing bolt (412) is threaded in the middle of the upper end face of the limiting part (410).

2. A flatbed trailer with a protective mechanism according to claim 1, characterized in that: The temporary support mechanism (5) includes a bidirectional threaded rod (51), a first bevel gear (52) is fixedly connected to the middle of the outer wall of the bidirectional threaded rod (51), a second bevel gear (53) is meshed with one side of the outer wall of the first bevel gear (52), a rotating rod (54) is fixedly connected to one end of the second bevel gear (53), a small rotating handle (55) is fixedly connected to one end of the rotating rod (54), a sliding groove (56) is opened in the middle of one end face of the support surface (1), and an extension support plate (57) is threaded to both ends of the outer wall of the bidirectional threaded rod (51).

3. A flatbed trailer with a protective mechanism according to claim 1, characterized in that: Each of the four corners of the lower end face of the bearing surface (1) is provided with a moving wheel (2), and a pull rod (3) is fixedly connected to one end of the upper end face of the bearing surface (1).

4. A flatbed trailer with a protective mechanism according to claim 1, characterized in that: The lower end of the outer wall of the pull rod (3) is fixedly connected to a connecting end (41), and one end of the pin (411) is slidably connected to one side of the outer wall of the insertion groove (48).

5. A flatbed trailer with a protective mechanism according to claim 1, characterized in that: One end of the retaining ring (46) passes through one side of the outer wall of the insertion groove (48) and forms a snap-fit ​​connection with one end of the pin (411). The lower end of the fixing bolt (412) passes through the middle of the upper surface of the limiting part (410) and forms a snap-fit ​​connection with one end of the pin (411).

6. A flatbed trailer with a protective mechanism according to claim 2, characterized in that: Both ends of the lower end face of the extended bearing plate (57) are fixedly connected with clips (58), and the clips (58) penetrate the lower end face of the bearing surface (1) and form a sliding connection with it.

7. A flatbed trailer with a protective mechanism according to claim 2, characterized in that: An extended bearing plate (57) is slidably connected to one side of the outer wall of the chute (56).

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