Widening device for cargo carrying platform of low flatbed semitrailer

Abstract

The utility model discloses a low flatbed semitrailer cargo carrying platform widening device, which belongs to the technical field of low flatbed semitrailer cargo carrying platform widening, and comprises a support frame and a breast board, the breast board is arranged at the end part of a side edge beam and is rotatably connected with the side edge beam to switch a vertical state and a horizontal state, and a support used for supporting the breast board is arranged below the breast board. The drawing beams and the breast boards matched with the supporting frames in an inserted mode are vertically arranged and can be used as side breast boards of the flat car, and the breast boards are horizontally arranged so that the area of a cargo carrying platform of the flat car can be increased; the lower end face of the breast board is attached to the supporting frame, the supporting frame supports the breast board, the area of the cargo carrying platform of the flat car is increased, the stress stability of the breast board is improved, and potential safety hazards caused by deformation of the breast board are prevented.

Description

Technical field:

[0001] The utility model belongs to the technical field of widening the cargo platform of a low-bed semi-trailer, and more specifically relates to a device for widening the cargo platform of a low-bed semi-trailer. Background technology:

[0002] A semitrailer is a trailer with an axle positioned behind the vehicle's center of gravity and equipped with a coupling device that transmits horizontal and vertical forces to the tractor. Semitrailers are typically three-axle and come in a variety of types, including 11-meter saddlebag semitrailers, 13-meter saddlebag semitrailers, and low-bed semitrailers. A heavy-duty transport vehicle connected to the semitrailer's front end by a towing pin, the semitrailer is an important piece of transportation equipment. Among existing semitrailers, the transportation of large, extra-wide, and inseparable cargo, such as generator sets, construction machinery, and military equipment, is increasingly common. Low-bed semitrailers are typically used to transport these extra-wide cargoes, but a standard low-bed semitrailer, with a width of 3 meters, is difficult to meet these transport requirements. Furthermore, if an extra-wide low-bed semitrailer cannot return to its standard width when unloaded or carrying cargo within the specified width, it will face numerous road restrictions, significantly impacting the semitrailer's transport efficiency.

[0003] The current widening method is to install widening sideboard devices on both sides. The widening sideboard devices are flipped and supported by rotating supports, thereby achieving the purpose of widening the cargo platform. However, the supporting force of the rotating supports is not strong. After long-term use, it is easy to deform and damage, resulting in safety hazards in equipment transportation. Utility model content:

[0004] In order to solve the above problems and overcome the shortcomings of the existing technology, the utility model provides a low-bed semi-trailer cargo platform widening device;

[0005] The first technical problem to be solved is that the supporting force of the rotating support is not strong. After long-term use, it is easy to deform and damage, resulting in safety hazards in equipment transportation.

[0006] The specific technical solution of the utility model to solve the above technical problems is: the low-bed semi-trailer cargo platform widening device is arranged between the main longitudinal beam and the side beam of the trailer cargo platform;

[0007] Support frame, used to connect the main longitudinal beam and side beam;

[0008] A guardrail is provided at the end of the side beam and is rotatably connected to the side beam to switch between vertical and horizontal states;

[0009] The guardrail is hinged to the side beam through a hinge part, the upper end surface of the guardrail is flush with the upper end surface of the side beam, the side end surface of the guardrail is fitted with the side beam, and a pull-out beam for supporting the guardrail and plugging into the support frame is provided below the guardrail.

[0010] Furthermore, the hinged portion includes a groove opened on the upper end surface of the side beam, a connecting seat located below the groove and fixedly connected to the side beam, a rotating shaft fixedly connected to the connecting seat, and an arched connecting sleeve with a sliding sleeve arranged on the outside of the rotating shaft.

[0011] Furthermore, the drawer beam passes through the side beam and is plugged into the support frame.

[0012] Furthermore, the drawer beam and the support frame slide relative to each other through a locking rod assembly limiting guide;

[0013] The locking rod assembly includes a locking rod and a sliding groove provided on the lower end surface of the support frame. The locking rod passes through the sliding groove and extends to the outside of the support frame and is fastened by a lock nut.

[0014] Furthermore, a pull-out plate is provided inside the support frame, one end of the pull-out plate is hinged to the pull-out beam through a pin, and the other end is provided with a pull-out hand hook.

[0015] Furthermore, a return spring is provided between the upper end of the pull-out plate and the inner wall of the pull-out beam, and a limit rod for limiting the position of the pull-out beam is provided between the lower end of the pull-out plate and the inner wall of the pull-out beam. The limit rod passes through the pull-out beam and is plugged into the support frame, and a preset number of limit grooves that are compatible with the limit rod are provided on the lower end surface of the support frame.

[0016] Furthermore, a cylinder for driving the drawer beam to reciprocate is provided inside the support frame, and the output end of the cylinder passes through the drawer beam and extends to the inside of the drawer beam to be connected to the locking rod;

[0017] The support frame opening is provided with a solenoid valve for driving the cylinder to work, and the arched connecting sleeve is fixedly provided with a valve regulating plate for pressing the solenoid valve switch.

[0018] The beneficial effects of the utility model are:

[0019] One advantage of the present invention is that the guardrail is rotatably connected to the side beam through a hinge, and the guardrail can be switched between vertical and horizontal states through the hinge. When there is no need to widen the cargo platform, the guardrail is placed vertically and can be used as a side guardrail of a flatbed truck, thereby improving the practicality of the flatbed truck.

[0020] One advantage of the present invention is that a pull-out beam for supporting the railing is provided under the railing and is plugged into the support frame. The lower end surface of the railing is in contact with the support frame, and the support frame supports the railing, which not only increases the area of ​​the flatbed truck's cargo platform, but also improves the force stability of the railing, prevents the railing from deforming and causing safety hazards, and solves the problem in the prior art that the rotating support has weak supporting force, is prone to deformation and damage after long-term use, and causes safety hazards in equipment transportation. Description of the drawings:

[0021] Attachment Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Attachment Figure 2 This is a schematic structural diagram of the first embodiment of the AA section of the present utility model;

[0023] Attachment Figure 3 This is a schematic diagram of the horizontal placement state of the guardrail of the first embodiment of the AA section of the present utility model;

[0024] Attachment Figure 4 This is a left-side structural schematic diagram of the second embodiment of the utility model in section AA;

[0025] Attachment Figure 5 This is a right side structural diagram of the second embodiment of the utility model in section AA;

[0026] Attachment Figure 6 This is a schematic diagram of the horizontal placement state of the guardrail of the second embodiment of the AA section of the present invention;

[0027] Attachment Figure 7 This is a schematic structural diagram of the third embodiment of the AA section of the present utility model;

[0028] Attachment Figure 8 This is a schematic diagram of the horizontal placement state of the guardrail of the third embodiment of the AA section of the present invention;

[0029] Attachment Figure 9 This is a schematic diagram of a partial structure of the utility model from a top view;

[0030] Attachment Figure 10 This is a schematic diagram of the lower end surface structure of the support frame of the utility model; in the accompanying drawings:

[0031] 1. Side beam; 11. Rotating shaft; 12. Connecting seat; 2. Guardrail; 21. Arched connecting sleeve; 22. Valve regulating plate; 3. Support frame; 311. Slide; 312. Limiting groove; 32. Pull-out beam; 33. Locking rod; 4. Pull-out plate; 41. Pull-out hand hook; 42. Return spring; 43. Limiting rod; 5. Cylinder; 51. Solenoid valve. Specific implementation method:

[0032] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "rear," "lower left," "upper right," and "outer" and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Specific implementation of the utility model: A low-bed semi-trailer cargo platform widening device is arranged between the main longitudinal beam and the side beam 1 of the trailer cargo platform;

[0034] As the inventive point of the utility model:

[0035] The end of the side beam 1 is provided with a sideboard 2 that can switch between vertical and horizontal states. In order to meet the transportation needs of extra-wide goods, the sideboard 2 can be placed horizontally to increase the area of ​​the flatbed truck's cargo platform; when there is no need to widen the cargo platform, the sideboard 2 is placed vertically and can be used as a sideboard of the flatbed truck, which improves the practicality of the flatbed truck and does not affect the transportation efficiency of the semi-trailer.

[0036] The fender 2 is hinged to the side beam 1 via a rotating shaft 11. In order to prevent the side beam 1 from affecting the hinged rotation of the fender 2 and to achieve close contact between the fender 2 and the side beam 1, the fender 2 is hinged to the side beam 1 via a hinge portion. Preferably, the hinge portion includes a groove provided on the upper end surface of the side beam 1, a connecting seat 12 located below the groove and fixedly connected to the side beam 1, a rotating shaft 11 fixedly connected to the connecting seat 12, and an arched connecting sleeve 21 slidably sleeved on the outside of the rotating shaft 11.

[0037] The connecting seat 12 is welded and fixedly arranged at intervals on the side end surface of the side beam 1. The rotating shaft 11 is arranged between two adjacent connecting seats 12. The two ends of the rotating shaft 11 are fixedly arranged on the connecting seat 12. A groove is provided on the upper end surface of the side beam 1. The arched connecting sleeve 21 passes through the groove and is sleeved on the outside of the rotating shaft 11. The arched connecting sleeve 21 is arranged at the contact end of the guardrail 2 and the side beam 1. The arched connecting sleeve 21 is a structure with a C-shaped groove in the middle.

[0038] The guardrail 2 can switch between vertical and horizontal states through a hinged portion. When the guardrail 2 is placed vertically, the side end surface of the guardrail 2 fits in with the upper end surface of the side beam 1; a pull-out beam 32 for supporting the guardrail 2 and plugging into the support frame 3 is provided below the guardrail 2. After the guardrail 2 is placed horizontally, the upper end surface of the guardrail 2 is flush with the upper end surface of the side beam 1, the side end surface of the guardrail 2 fits in with the side end surface of the side beam 1, and its back side fits in with the support frame 3. The guardrail 2 is supported by the support frame 3, which improves the force stability of the guardrail 2, thereby preventing the guardrail 2 from deforming and causing safety hazards.

[0039] Among them, the pulling beam 32 passes through the side beam 1 and is plugged into the support frame 3. The main longitudinal beam and the side beam 1 are connected through the support frame 3. The support frame 3 is set to pass through the side beam 1 and is arranged at intervals along the side beam 1. The support frame 3 is a hollow box structure. The pulling beam 32 is plugged into the inside of the support frame 3 and is connected to the support frame 3 in a pull-out manner.

[0040] The pulling beam 32 and the support frame 3 slide relative to each other through the limiting guide of the locking rod assembly; preferably, the locking rod assembly includes a locking rod 33 and a sliding groove 311 opened on the lower end surface of the support frame 3, and the locking rod 33 passes through the sliding groove 311 and extends to the outside of the support frame 3 and is fastened by a lock nut.

[0041] The support frame 3 and the pulling beam 32 are penetrated by a locking rod 33, and a sliding groove 311 is provided on the lower end surface of the support frame 3. One end of the locking rod 33 is connected to the inner wall of the pulling beam 32, and the other end passes through the pulling beam 32 and the sliding groove 311 and extends to the outside of the support frame 3. It is fastened by a lock nut, and the locking rod 33 is loosely matched with the sliding groove 311 and can slide along the sliding groove 311.

[0042] In order to facilitate the reciprocating drawing of the drawer beam 32 in the support frame 3, as a first embodiment:

[0043] A pull-out plate 4 is provided inside the pull-out beam 32 . One end of the pull-out plate 4 close to the locking rod 33 is hinged to the pull-out beam 32 via a pin, and the other end is provided with a pull-out hand hook 41 .

[0044] Furthermore, a return spring 42 is provided between the upper end of the pull-out plate 4 and the inner wall of the pull-out beam 32, and a limit rod 43 for limiting the position of the pull-out beam 32 is provided between the lower end of the pull-out plate 4 and the inner wall of the pull-out beam 32, and the limit rod 43 is fixedly provided at the lower end of the pull-out plate 4; preferably, the limit rod 43 is a spring pin; the limit rod 43 passes through the pull-out beam 32 and is engaged with the support frame 3, and the lower end surface of the support frame 3 is provided with a preset number of limit grooves 312 that are compatible with the limit rod 43.

[0045] As a second embodiment, in order to facilitate the reciprocating drawing of the drawer beam 32 in the support frame 3, the cylinder 5 may be used to control:

[0046] The support frame 3 is provided with a cylinder 5 for driving the reciprocating motion of the drawer beam 32. The output end of the cylinder 5 passes through the drawer beam 32 and extends into the drawer beam 32 to connect with the locking rod 33. The reciprocating motion of the drawer beam 32 inside the support frame 3 is achieved by the extension and contraction of the output end of the cylinder 5.

[0047] The support frame 3 is provided with a solenoid valve 51 at the opening thereof for driving the cylinder 5. The solenoid valve 51 is a roller type solenoid valve 51. The cylinder 5 and the solenoid valve 51 are both purchased from the market. The brand thereof is AirTac. The model of the cylinder 5 is: AirTac SC pull-rod standard cylinder; the model of the solenoid valve 51 is: AirTac 4V310-08. The working principle of the solenoid valve 51 driving the cylinder 5 is the prior art and is not a protection scheme of the present utility model and will not be elaborated here.

[0048] A valve regulating plate 22 for pressing the electromagnetic valve 51 to switch is fixedly provided on the arched connecting sleeve 21. When the railing 2 is placed horizontally, the valve regulating plate 22 will contact the electromagnetic valve 51 and press the electromagnetic valve 51, thereby driving the cylinder 5 to work. The cylinder 5 extends and retracts, pushing the pulling beam 32 to extend and retract, so that when the railing 2 is placed horizontally, the cylinder 5 can drive the pulling beam 32 to extend synchronously to support the railing 2.

[0049] Preferably, the first embodiment and the second embodiment may be combined. As a third embodiment, a structure in which the cylinder 5 and the pull-out plate 4 coexist is adopted. The connection relationship between the cylinder 5, the pull-out plate 4 and the pull-out beam 32 is consistent with the above description and will not be repeated here. This structure can prevent problems with the cylinder 5 that affect work, and the pull-out plate 4 can be manually pulled out without affecting normal use.

[0050] It should be noted that the utility model is a low-bed semi-trailer cargo platform widening device, in order to meet the transportation needs of extra-wide cargo,

[0051] During the specific operation of Example 1, according to the need to widen the transportation of different over-width goods, the pull-out plate 4 is manually lifted so that the limit rod 43 leaves the limit groove 312 and is pulled outward to pull the pull-out beam 32 out of the support frame 3. The railing 2 is manually lifted and unfolded outward, and the railing 2 is rotated around the rotating shaft 11 through the arched connecting sleeve 21, so that it is placed on the support frame 3, so that the upper end face of the railing 2 is flush with the upper end face of the side beam 1, and fits tightly with the side beam 1, and the lower end face of the railing 2 is fit with the support frame 3, and the railing 2 is supported by the support frame 3, which improves the force stability of the railing 2, thereby preventing the railing 2 from deforming and causing safety hazards.

[0052] During the specific operation of Example 2, the guardrail 2 is manually lifted and unfolded outward, and the guardrail 2 rotates with the rotating shaft 11 as the center through the arched connecting sleeve 21. When the guardrail 2 is placed horizontally to a certain extent, the valve regulating plate 22 contacts the solenoid valve 51 and presses the solenoid valve 51, thereby driving the cylinder 5 to work. The cylinder 5 extends and retracts, pushing the pulling beam 32 to extend and retract to support the guardrail 2. It can be achieved that during the horizontal placement of the guardrail 2, the cylinder 5 can drive the pulling beam 32 to extend synchronously to support the guardrail 2.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A low-bed semi-trailer cargo platform widening device, arranged between the main longitudinal beam and the side beam (1) of the trailer cargo platform; characterized in that: include A support frame (3) for connecting the main longitudinal beam and the side beam (1); A guardrail (2) is arranged at the end of the side beam (1) and is rotatably connected to the side beam (1) to switch between a vertical state and a horizontal state; The guardrail (2) and the side beam (1) are hinged and rotated through a hinged portion, the upper end surface of the guardrail (2) is flush with the upper end surface of the side beam (1), and the side end surface of the guardrail (2) is in contact with the side beam (1). A pull-out beam (32) for supporting the guardrail (2) and plugging into the support frame (3) is provided below the guardrail (2).

2. The low-bed semi-trailer cargo platform widening device according to claim 1 is characterized in that The hinge portion comprises a groove formed on the upper end surface of the side beam (1), a connecting seat (12) located below the groove and fixedly connected to the side beam (1), a rotating shaft (11) fixedly connected to the connecting seat (12), and an arched connecting sleeve (21) slidingly sleeved on the outside of the rotating shaft (11).

3. The low-bed semi-trailer cargo platform widening device according to claim 1 is characterized in that The pulling beam (32) passes through the side beam (1) and is plugged into and matched with the supporting frame (3).

4. The low-bed semi-trailer cargo platform widening device according to claim 3 is characterized in that The drawer beam (32) and the support frame (3) slide relative to each other through the limiting guide of the locking rod assembly; The locking rod assembly comprises a locking rod (33) and a sliding groove (311) provided on the lower end surface of the support frame (3); the locking rod (33) passes through the sliding groove (311) and extends to the outside of the support frame (3) and is fastened by a lock nut.

5. The low-bed semi-trailer cargo platform widening device according to claim 4 is characterized in that A pull-out plate (4) is provided inside the support frame (3); one end of the pull-out plate (4) is hinged to a pull-out beam (32) via a pin shaft, and the other end is provided with a pull-out hand hook (41).

6. The low-bed semi-trailer cargo platform widening device according to claim 5, characterized in that A return spring (42) is provided between the upper end of the pull-out plate (4) and the inner wall of the pull-out beam (32), and a limit rod (43) for limiting the position of the pull-out beam (32) is provided between the lower end of the pull-out plate (4) and the inner wall of the pull-out beam (32). The limit rod (43) passes through the pull-out beam (32) and is plugged into the support frame (3). The lower end surface of the support frame (3) is provided with a preset number of limit grooves (312) that are compatible with the limit rod (43).

7. The low-bed semi-trailer cargo platform widening device according to claim 4, characterized in that A cylinder (5) for driving the drawer beam (32) to reciprocate is provided inside the support frame (3); an output end of the cylinder (5) passes through the drawer beam (32) and extends to the inside of the drawer beam (32) to be connected to a locking rod (33); The opening of the support frame (3) is provided with a solenoid valve (51) for driving the cylinder (5) to work, and the arched connecting sleeve (21) is fixedly provided with a valve regulating plate (22) for pressing the solenoid valve (51) to switch.

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