Trailer capable of improving crashworthiness and safety

Abstract

The utility model discloses a trailer capable of improving crashworthiness and safety. The trailer comprises a frame body, a rear wheel frame and a rotary disc are installed on the frame body, a front wheel frame is installed on the rotary disc, rear idler wheels are installed on the rear wheel frame, front idler wheels are installed on the front wheel frame, and a mop is rotatably installed on the front wheel frame. The frame body comprises a bearing frame, and a plurality of anti-collision blocks arranged in the length direction of the bearing frame in an array mode are installed on the two side faces of the bearing frame. Limiting structures are installed at the front end and the rear end of the bearing frame, each limiting structure comprises sliding seats arranged on the bearing frame at intervals, limiting rods are installed on the sliding seats in a sliding mode, limiting blocks and extending handles fixed to the limiting blocks are fixed to the limiting rods, and stopping blocks used for stopping the limiting blocks are arranged on the bearing frame; the limiting rod is sleeved with a first spring, and one end of the first spring abuts against the sliding base. The whole trailer has the anti-collision performance, and the limiting structure is used for limiting the luggage binding structure, so that it is guaranteed that the luggage has good stability in the transportation process.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage trailers, in particular to a trailer with improved anti-collision safety. Background Art

[0002] In the transportation management of the airport, on the one hand, it is necessary to guide or transport passengers to the aircraft to be boarded, and on the other hand, it is necessary to transport passengers' luggage and other items to the aircraft for random transportation, or take them out of the aircraft to the luggage carousel for passengers to take away. In the existing transportation process, unpowered trailers are mainly used to transport luggage in batches, and the tractor head is used for towing and transportation. Trailers are mainly used outdoors. After loading the luggage, it is necessary to ensure the limited stability of the luggage and prevent it from sliding off the trailer. At the same time, there is also a risk of collision with external objects during the movement of the trailer. Therefore, the trailer structure needs to have a certain anti-collision performance to protect the trailer, and at the same time, ensure that the luggage is limited and will not slide when a collision occurs. Utility Model Content

[0003] 1. Technical issues

[0004] The utility model aims to provide a trailer with improved anti-collision safety, solving the problem of anti-collision of the trailer and ensuring reliable position limitation of luggage when a collision occurs.

[0005] (II) Technical solution

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A trailer with improved anti-collision safety comprises a frame body, a rear wheel frame and a turntable are installed on the frame body, a front wheel frame is installed on the turntable, a rear roller is installed on the rear wheel frame, a front roller is installed on the front wheel frame, and a mop is rotatably installed on the front wheel frame; the frame body comprises a load-bearing frame, and a plurality of anti-collision blocks arranged in an array along the length direction of the load-bearing frame are installed on both side surfaces of the load-bearing frame; a limiting structure is installed at the front and rear ends of the load-bearing frame, and the limiting structure comprises a sliding seat arranged on the load-bearing frame at intervals, a limiting rod is slidably installed on the sliding seat, a limiting block and an extended handle fixed on the limiting block are fixed on the limiting rod, and a stop block for stopping the limit block is provided on the load-bearing frame; a first spring is sleeved on the limiting rod, and one end of the first spring abuts against the sliding seat.

[0008] Preferably, a first threaded hole is provided on the front wheel frame, a rotating shaft is threadedly connected to the first threaded hole, a fastening nut is threadedly connected to the portion of the rotating shaft extending out of the front wheel frame, and the mop is rotatably mounted on the rotating shaft.

[0009] Preferably, the frame body includes a plurality of placement racks evenly distributed along the length direction of the support rack, support plates are respectively provided at both ends of the support rack, a plurality of rollers arranged along the width of the support rack are rotatably provided between adjacent placement racks and the support plates and between two adjacent placement racks, and the spacing between two adjacent rollers is different; a plurality of baffle handle structures are arranged at intervals on the placement racks.

[0010] Preferably, the baffle handle structure includes two limit blocks installed at intervals on the placement rack, and the limit handles are rotatably installed on the two limit blocks, and the limit handles are installed with holding rods. The limit blocks are provided with limit grooves, and the opening position of the limit grooves is provided with a chamfered structure.

[0011] Preferably, the structural dimensions of the roller are universal dimensions.

[0012] Preferably, a brake mechanism is installed on the front wheel frame, and the brake mechanism includes a rotating rod rotatably installed on the front wheel frame, a brake support plate corresponding to the front roller is installed on the rotating rod, a brake body is installed on the brake support plate, and a brake connecting plate is installed on the rotating rod;

[0013] A push rod is slidably mounted on the front wheel frame, one end of the push rod is rotatably connected to the brake connecting plate, and the other end of the push rod is mounted with a brake push plate; a cam block is mounted on the mop, and when the mop rotates upward, the cam block pushes the brake push plate to move.

[0014] Preferably, the push rod is sleeved with a second spring abutting against the front wheel frame, and the second spring is used for pushing the push rod to reset and move.

[0015] Preferably, a through hole corresponding to the brake support plate is provided on the front wheel frame.

[0016] Preferably, the turntable includes an outer ring and an inner ring rotatably mounted on the outer ring, the outer ring is provided with a plurality of second threaded holes evenly distributed along the circumferential direction, and the inner ring is provided with a plurality of countersunk holes evenly distributed along the circumferential direction; it also includes a first fastener and a second fastener, the first fastener passes through the frame body and is locked on the second threaded hole, the second fastener passes through the countersunk hole and is locked on the front wheel frame, and the insertion direction of the first fastener and the second fastener is the same.

[0017] Preferably, the anti-collision block is made of plastic, rubber or metal, and the color of the anti-collision block is red, green or black.

[0018] (III) Beneficial effects

[0019] By arranging a plurality of anti-collision blocks on the side of the carrier, a buffer is formed when a collision occurs, so that the vibration of the carrier is reduced; at the same time, by arranging a limiting structure at the front and rear ends of the carrier, the luggage is further limited and tightened by the limiting structure, so that the stability of the luggage is ensured and it will not slide when a collision occurs;

[0020] The extended handle is brought with the limit block and the limit rod to slide on the sliding seat, so that the luggage restraining structure can be inserted easily. After the extended handle is released, the limit rod is reset and inserted into the two sliding seats under the action of the first spring to limit the luggage restraining structure, thereby facilitating operation through the extended handle and improving operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of a three-dimensional structure schematic diagram of an embodiment of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the layout at center A;

[0023] Figure 3 for Figure 1 A schematic diagram of the partially enlarged structure at B in the middle;

[0024] Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure at C in the middle;

[0025] Figure 5 This is a bottom-up three-dimensional structural schematic diagram of an embodiment of the utility model;

[0026] Figure 6 for Figure 5 The schematic diagram of the local enlarged structure at D in the middle;

[0027] Figure 7 for Figure 5 The schematic diagram of the local enlarged structure at E in the middle;

[0028] Figure 8 for Figure 5 The schematic diagram of the partial enlarged structure at F in the middle;

[0029] Fig. 9 A schematic diagram of the structure of the rotary disk in the embodiment of the utility model;

[0030] exist Figures 1 to 9 In the figure, the corresponding relationship between the component names or lines and the figure numbers is as follows:

[0031] Frame body 1, load-bearing frame 101, anti-collision block 102, placement frame 103, support plate 104, roller 105, rear wheel frame 2, turntable 3, outer ring 31, inner ring 32, second threaded hole 33, countersunk hole 34, front wheel frame 4, first threaded hole 40, through hole 41, rear roller 5, front roller 6, mop 7, limiting structure 8, sliding seat 81, limiting rod 82, limiting block 83, extension handle 84, stop block 85, first spring 86, rotating shaft 9, fastening nut 10, baffle handle structure 11, limiting block 111, limiting handle 112, holding rod 113, limiting groove 114, brake mechanism 12, rotating rod 121, brake support plate 122, brake body 123, brake connecting plate 124, push rod 125, brake push plate 126, cam block 127, second spring 128. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] See also Figure 1-Figure 9 As shown, in the embodiment of the utility model, a trailer with improved anti-collision safety is proposed, including a frame body 1, a rear wheel frame 2 and a turntable 3 are installed on the frame body 1, a front wheel frame 4 is installed on the turntable 3, a rear roller 5 is installed on the rear wheel frame 2, a front roller 6 is installed on the front wheel frame 4, and a mop 7 is rotatably installed on the front wheel frame 4. The movement of the entire trailer is achieved by installing the front roller 6 and the rear roller 5, and the mop 7 is used to hook the entire trailer to the traction head vehicle, or connect two adjacent trailers to achieve simultaneous pulling of multiple trailers. During the movement of the trailer, there is a need to adjust the angle to achieve turning, etc. After the front wheel frame 4 is installed on the frame body 1 through the turntable 3, the turning action can be achieved by allowing the front wheel frame 4 to change the angle with the front roller 6 during the movement.

[0034] The frame body 1 is used as the main bearing component for loading luggage. Specifically, the frame body 1 includes a load-bearing frame 101. Both sides of the load-bearing frame 101 are provided with a plurality of anti-collision blocks 102 arranged in an array along its length direction. The anti-collision blocks 102 are provided to form a buffer when the load-bearing frame 101 collides with the load-bearing frame 101, thereby preventing the load-bearing frame 101 from vibrating greatly and causing the luggage to be unstable.

[0035] The anti-collision block 102 includes but is not limited to a steel structure and a rubber plate. When the anti-collision block 102 is a rubber plate, mounting holes are pre-processed on the rubber plate and the anti-collision block 102 is connected to both sides of the support frame 101 by fastening screws or bonded to both sides of the support frame 101 by glue.

[0036] At the same time, limiting structures 8 are installed at the front end and the rear end of the carrier 101, and the limiting structures are used to limit the container or the pallet, so that the luggage will not slide down even if the carrier 101 collides.

[0037] Specifically, when operating the limiting structure 8, the luggage restraining structure needs to be placed and limited, which has a process of placement and removal, and requires manual operation by an operator. The limiting structure 8 includes a sliding seat 81 arranged at intervals on the carrier 101, a limiting rod 82 is slidably mounted on the sliding seat 81, a limiting block 83 is fixed on the limiting rod 82, and an extended handle 84 is fixed on the limiting block 83. The carrier 101 is provided with a stop block 85 for stopping the limiting block 83. When the limiting block 83 slides to the position of the stop block 85, the limiting block 83 can be rotated and stopped, which has a blocking and limiting effect. At the same time, by holding the extended handle 84 and sliding the limit block 83 and the limit rod 82 relative to the sliding seat 81, the luggage restraint structure can be inserted for placement. After placement, the extended handle 84 can be released to automatically reset. Specifically, a first spring 86 is sleeved on the limit rod 82, and one end of the first spring 86 abuts against the sliding seat 81. The limit rod 82 is reset by the reset elastic force of the first spring 86.

[0038] By increasing the length of the extended handle 84 , the operator can quickly grasp and operate it, and can avoid the need to find a fulcrum when adjustment is required, thereby improving the convenience of operation.

[0039] The mop 7 will be rotated upward and placed when the trailer is not moving, and the mop 7 is installed on the front wheel frame 4 to achieve traction of the entire trailer, thereby generating a pulling force at the connection position. In order to improve the stability of the connection part, the mop 7 has a more reliable connection state after being pulled and rotated.

[0040] Therefore, a first threaded hole 40 is provided on the front wheel frame 4, a rotating shaft 9 is threadedly connected to the first threaded hole 40, a fastening nut 10 is threadedly connected to the portion of the rotating shaft 9 extending out of the front wheel frame 4, and the mop 7 is rotatably mounted on the rotating shaft 9, and one end of the rotating shaft 9 is inserted into the front wheel frame 4 and then locked through the first threaded hole 40, and the extended portion is further locked through the fastening nut 10, thereby ensuring the installation stability of the rotating shaft 9, and being subjected to force at the same time as the front wheel frame 4, the force can be transmitted to the front wheel frame 4, thereby improving the structural stability. In addition, when the mop 7 rotates relative to the rotating shaft 9, when the threads are locked at two locations, the rotating shaft 9 will not be rotated with it, and it can be ensured that the rotating shaft 9 will not become loose.

[0041] The frame body 1 is used for loading and placing luggage. Specifically, the frame body 1 includes a plurality of placement racks 103 evenly distributed along the length direction of the carrier 101. The placement racks 103 are mainly used to place luggage. Support plates 104 are respectively provided at the two ends of the carrier 101. A plurality of rollers 105 arranged along the width of the carrier 101 are rotatably provided between the adjacent placement racks 103 and the support plates 104 and between two adjacent placement racks 103. The spacing between two adjacent rollers 105 is different. The arrangement of the rollers 105 is set to be non-uniform. The spacing between adjacent rollers 105 can be adjusted according to different load-bearing parts, so as to adapt to stable support after loading luggage. At the same time, a plurality of baffle handle structures 11 are arranged at intervals on the placement racks 103. The baffle handle structures 11 are used to limit the structure of the transversely restrained luggage, so as to further achieve a stable transportation state of the luggage.

[0042] Furthermore, the rollers 105 used on different trailers have the same structure, which can improve versatility. Therefore, the structural dimensions of the rollers 105 are made into universal dimensions, such as 60 mm×440 mm×15 mm×3 mm.

[0043] The baffle handle structure 11 includes two limit blocks 111 installed at intervals on the placement rack 103, and a limit handle 112 is rotatably installed on the two limit blocks 111. A gripping rod 113 is installed on the limit handle 112. The gripping rod 113 is designed to be longer to avoid excessive leakage, so that the force point is more stable and the fingers are prevented from being squeezed and stuck. The limit block 111 is provided with a limit groove 114, and the opening position of the limit groove 114 is provided with a chamfer structure. The chamfer is enlarged under the premise of ensuring strength, so as not to squeeze and jam the hands. The gripping rod 113 is rotated with the limit handle 112 relative to the two limit blocks 111, and after the restraining structure is placed, the limit handle 112 is rotated downward and pressed on the limit block 111, and the gripping rod 113 is limited by the limit groove 114, so as to achieve stable limiting of the restraining structure. At the same time, the special design of the holding rod 113 and the groove 114 can guide the holding rod 113 when it slides into or out of the limiting groove 114, which is convenient for operation and reduces the risk of getting stuck.

[0044] When the trailer is parked, braking is required, therefore, a brake mechanism 12 is installed on the front wheel frame 4, and the brake mechanism 12 includes a rotating rod 121 rotatably installed on the front wheel frame 4, and a brake support plate 122 corresponding to the front roller 6 is installed on the rotating rod 121, and a brake body 123 is installed on the brake support plate 122, and a brake connecting plate 124 is installed on the rotating rod 121. At the same time, a pushing rod 125 is slidably installed on the front wheel frame 4, and one end of the pushing rod 125 is rotatably connected to the brake connecting plate 124, and a brake push plate 126 is installed on the other end of the pushing rod 125. After the brake push plate 126 moves with the pushing rod 125, the brake connecting plate 124 and the rotating rod 121 are pulled to rotate, so that the brake body 123 on the brake support plate 122 abuts against the front roller 6 to form a friction force, thereby braking the front roller 6.

[0045] At the same time, in order to link the movement of the brake push plate 126 with the rotation of the mop 7, a cam block 127 is installed on the mop 7. When the mop 7 rotates upward, the cam block 127 pushes the brake push plate 126 to move. When the mop 7 rotates with the cam block 127, the convex part of the cam block 127 is pressed against the brake push plate 126 to push it. When the mop 7 rotates downward to be hung on the tractor, the brake push plate 126 is not subjected to the pushing force.

[0046] In order to accelerate the resetting of the push rod 125, allow the brake body 123 to rotate in the opposite direction and away from the front roller 6, and unlock the braking state, a return spring that abuts against the front wheel frame 4 is provided on the push rod 125, and the return spring is used to push the push rod 125 to return and move. In the braking state, the return spring is compressed, and in the unlocking state, the return spring can accelerate the resetting movement of the push rod 125 when it is restored.

[0047] Since the brake support plate 122 and the brake body 123 are located inside the front wheel frame 4 during installation, they will be blocked by the front end of the front wheel frame 4 during assembly. In order to avoid installation from the bottom during assembly, a through hole 41 corresponding to the brake support plate 122 is opened on the front wheel frame 4. The through hole 41 is a waist-shaped structure. During installation, the brake body 123 and the brake support plate 122 are installed by inserting a tool through the through hole 41.

[0048] Specifically, the rotating disk 3 is used to install the front wheel frame 4 and the frame body 1. In order to realize the installation from the frame body 1, the rotating disk 3 includes an outer ring 31 and an inner ring 32 rotatably mounted on the outer ring 31. The outer ring 31 is provided with a plurality of threaded holes evenly distributed along the circumferential direction, and the inner ring 32 is provided with a plurality of countersunk holes 34 evenly distributed along the circumferential direction. The rotating disk 3 also includes a first fastener and a second fastener. The first fastener passes through the frame body 1 and is locked on the threaded hole. The second fastener passes through the countersunk hole 34 and is locked on the front wheel frame 4. The first fastener and the second fastener have the same insertion direction. The front wheel frame 4 is also provided with a connecting flange to lock the second fastener, and the connecting flange is fixed on the frame body 1. By setting the threaded hole and the countersunk hole 34 on the same side, the first fastener and the second fastener are installed by passing from the top of the frame body 1 downward, without having to go under the frame body 1 to operate. This can improve assembly efficiency and reduce the workload of operators.

[0049] It should also be noted that the present embodiment mainly describes the improved technical solution, and other specific parts that need to be constructed in the trailer structure and are not described can be directly applied using existing technologies.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A trailer with improved anti-collision safety, characterized by: The vehicle comprises a frame body, a rear wheel frame and a rotating disk are installed on the frame body, a front wheel frame is installed on the rotating disk, a rear roller is installed on the rear wheel frame, a front roller is installed on the front wheel frame, and a mop is rotatably installed on the front wheel frame; The frame body comprises a load-bearing frame, and a plurality of anti-collision blocks arranged in an array along the length direction of the load-bearing frame are installed on both sides of the load-bearing frame; The front end and the rear end of the carrier are both installed with limiting structures, the limiting structures include sliding seats arranged at intervals on the carrier, a limiting rod is slidably installed on the sliding seat, a limiting block is fixed on the limiting rod and an extended handle is fixed on the limiting block, and a stop block for stopping the limiting block is provided on the carrier; A first spring is sleeved on the limiting rod, and one end of the first spring abuts against the sliding seat.

2. A trailer with improved anti-collision safety according to claim 1, characterized in that: The front wheel frame is provided with a first threaded hole, a rotating shaft is threadedly connected to the first threaded hole, a fastening nut is threadedly connected to the portion of the rotating shaft extending out of the front wheel frame, and the mop is rotatably mounted on the rotating shaft.

3. The trailer with improved anti-collision safety according to claim 1, characterized in that: The frame body comprises a plurality of placement racks evenly distributed along the length direction of the carrier, support plates are respectively provided at both ends of the carrier, a plurality of rollers arranged along the width of the carrier are rotatably provided between adjacent placement racks and the support plates and between two adjacent placement racks, and the spacing between two adjacent rollers is different; A plurality of baffle handle structures are arranged at intervals on the placement rack.

4. The trailer with improved anti-collision safety according to claim 3, characterized in that: The baffle handle structure includes two limit blocks installed at intervals on the placement rack, and the limit handles are rotatably installed on the two limit blocks. A holding rod is installed on the limit handle. The limit block is provided with a limit groove, and the opening position of the limit groove is provided with a chamfered structure.

5. The trailer with improved anti-collision safety according to claim 3, characterized in that: The structural dimensions of the roller are universal dimensions.

6. A trailer with improved crashworthiness according to any one of claims 1 to 5, characterized in that: The front wheel frame is provided with a brake mechanism, the brake mechanism comprising a rotating rod rotatably mounted on the front wheel frame, a brake support plate corresponding to the front roller is mounted on the rotating rod, a brake body is mounted on the brake support plate, and a brake connecting plate is mounted on the rotating rod; A push rod is slidably mounted on the front wheel frame, one end of the push rod is rotatably connected to the brake connecting plate, and the other end of the push rod is mounted with a brake push plate; A cam block is installed on the mop, and when the mop rotates upward, the cam block pushes the brake push plate to move.

7. The trailer with improved anti-collision safety according to claim 6, characterized in that: The push rod is sleeved with a second spring abutting against the front wheel frame, and the second spring is used for pushing the push rod to reset and move.

8. The trailer with improved anti-collision safety according to claim 7, characterized in that: The front wheel frame is provided with a through hole corresponding to the brake support plate.

9. A trailer with improved crashworthiness according to any one of claims 1 to 5, characterized in that: The rotary disk comprises an outer ring and an inner ring rotatably mounted on the outer ring, the outer ring is provided with a plurality of second threaded holes evenly distributed along the circumferential direction, and the inner ring is provided with a plurality of countersunk holes evenly distributed along the circumferential direction; It also includes a first fastener and a second fastener. The first fastener passes through the frame body and is locked on the second threaded hole. The second fastener passes through the countersunk hole and is locked on the front wheel frame. The first fastener and the second fastener have the same insertion direction.

10. The trailer with improved anti-collision safety according to claim 1, characterized in that: The material of the anti-collision block is plastic, rubber or metal, and the color of the anti-collision block is red, green or black.

Images