An extension section for a loading platform

Abstract

The application discloses a lengthening section for loading and unloading platform, which comprises a main frame, a movable baffle arranged at the front end of the main frame, a connecting pin shaft for connecting the loading and unloading platform arranged at the rear end of the main frame, fixed baffles arranged at the left and right sides of the main frame, folding walkways arranged outside the fixed baffles, carrier rollers arranged on the top surface of the main frame for carrying materials, and lifting points arranged on the top surface of the main frame for lifting; the lengthening section disclosed by the application is a modular independent unit, can be selected to be installed or removed according to actual use requirements, and can expand the physical range of the loading and unloading platform for carrying goods after the lengthening section is installed; the function of the original loading and unloading platform is not affected after the lengthening section is removed.

Description

Technical Field

[0001] This invention relates to the field of airport logistics transfer equipment technology, and in particular to an extended section for loading and unloading platforms. Background Technology

[0002] A lifting loading platform is a large airport shuttle vehicle capable of loading, unloading, and transferring bulk cargo and standard containerized cargo. A lifting loading platform typically consists of a shuttle vehicle, a loading platform, and scissor bracing installed between the shuttle vehicle and the loading platform. In practical applications, the types of cargo handled by the loading platform are diverse, including bulk cargo and standard containerized cargo, with varying stacking densities. However, the loading platform of a typical shuttle vehicle has a fixed size, and its load-bearing capacity remains constant. This results in the loading platform being able to fully utilize its load-bearing capacity for cargo with high stacking density, while its capacity is insufficient for cargo with low stacking density, thus affecting the efficiency of cargo handling.

[0003] Patent application number "CN202120800028.9" discloses "a safe unloading platform for prefabricated building construction". Although the lateral width of the loading and unloading platform can be expanded by extending the tightening plate outward, this expansion method is mainly used to prevent materials from falling accidentally and cannot be used for the regular transportation of materials. Summary of the Invention

[0004] The purpose of this invention is to propose an extended section for loading and unloading platforms to expand the cargo carrying capacity of the platforms, thereby compensating for the inability to fully utilize the carrying capacity of the platforms when loading and unloading cargo with low stacking density, and thus improving the efficiency of loading and unloading cargo.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An extended section for a loading and unloading platform includes a main frame. A movable baffle is provided at the front end of the main frame, and a connecting pin for connecting the loading and unloading platform is provided at the rear end of the main frame. Fixed baffles are provided on both the left and right sides of the main frame. Foldable walkways are provided on the outer side of the fixed baffles. A lifting roller for supporting materials is provided on the top surface of the main frame, and a lifting point for hoisting is also provided on the top surface of the main frame.

[0006] Preferably, the main frame includes at least two parallel longitudinal beams, with a front beam at the front end of each longitudinal beam, a rear beam below the rear end of each longitudinal beam, a left longitudinal beam on the left side of each longitudinal beam, a right longitudinal beam on the right side of each longitudinal beam, a left connecting beam between the left longitudinal beam and its adjacent longitudinal beam, a right connecting beam between the right longitudinal beam and its adjacent longitudinal beam, and a central connecting beam between two adjacent longitudinal beams.

[0007] Preferably, a connecting lug is provided above the rear end of the longitudinal beam, and the connecting pin is installed in the connecting lug; Preferably, the rear beam is also provided with a positioning pin that cooperates with the loading and unloading platform for positioning.

[0008] Preferably, the idler roller includes a roller and an idler roller seat mounted on the main frame. The roller has an axle, which is mounted on the idler roller seat. The idler roller seat is also provided with a retaining plate to prevent the axle from falling out.

[0009] Preferably, the movable baffle includes a baffle seat beam, and a rotatable limiting baffle is provided inside the baffle seat beam.

[0010] Preferably, the folding walkway includes a walkway body and a walkway support mounted on a fixed baffle, wherein the walkway body rotates around the walkway support to achieve folding or unfolding of the walkway body.

[0011] Preferably, it further includes a limiting mechanism for limiting the folded state of the walkway body. The limiting mechanism includes a fixed ear plate disposed on a fixed baffle, a connecting rod disposed on the fixed ear plate, and a locking pin disposed on the walkway body that can pass through the connecting rod.

[0012] Preferably, the main frame is further provided with drop grooves for accommodating forklift fork teeth.

[0013] Preferably, the height of the lifting point is lower than the height of the idler roller.

[0014] The beneficial effects of this invention are as follows: 1. The extension section disclosed in this application is a modular, independent unit that can be installed or removed according to actual usage needs. Installing the extension section expands the physical range of cargo that the loading and unloading platform can carry; removing the extension section does not affect the original function of the loading and unloading platform.

[0015] 2. The connection between this extended section and the existing loading and unloading platform adopts a combination of positioning pins for quick positioning and installation pins. Only two pins are needed to achieve a fixed connection between the extended section and the loading and unloading platform, making installation and dismantling convenient and efficient.

[0016] 3. The extended section adopts a symmetrical structure laterally, with a welded frame structure for the main frame and foldable walkways on both sides. In the working state, the walkways are open for easy access by operators; in the transport state, the walkways are folded down, reducing the overall width of the extended section and resulting in a compact structure.

[0017] 4. Fixed limiting baffles are provided on both sides of the extended section, and a movable baffle mechanism is provided at the front end of the extended section, which can effectively ensure that the goods are transported along the predetermined track or stay at the predetermined position, thus ensuring high safety.

[0018] 5. The detachable extended section and loading / unloading platform together form a loading / unloading platform with an expandable cargo carrying capacity, which makes up for the inability of the loading / unloading platform to fully utilize its carrying capacity when loading and unloading cargo with low stacking density, thereby improving the efficiency of loading and unloading cargo. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is the front view of this application; Figure 3 This is a schematic diagram of the main framework in this application; Figure 4 This is the main view of the main frame in this application; Figure 5 This is a schematic diagram of the positioning pin in this application; Figure 6 This is a schematic diagram of the connecting pin structure in this application; Figure 7 This is a schematic diagram of the structure of the idler roller in this application; Figure 8 This is a schematic diagram of the structure of the movable baffle in this application; Figure 9 This is a schematic diagram of the structure of the fixed baffle in this application; Figure 10 This is a schematic diagram of the folding walkway in this application; Figure 11 This is a structural schematic diagram of the folding walkway in this application from another angle; Figure 12 This is a schematic diagram of the limiting mechanism in this application; Figure 13 for Figure 1 A magnified view of a section at point I; Figure 14 This is a structural schematic diagram of the lifting point in this application; Figure 15 This is a schematic diagram of the drop channel in this application.

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0021] The invention will now be further described with reference to the accompanying drawings. Example

[0022] like Figure 1 and Figure 2As shown, an extended section for a loading and unloading platform in this embodiment includes a main frame 4001. A movable baffle 4005 is provided at the front end of the main frame 4001, and a connecting pin 4003 for connecting to a loading and unloading platform (not shown in the figure) is provided at the rear end of the main frame 4001. Fixed baffles 4006 are provided on both the left and right sides of the main frame 4001. A folding walkway 4007 is provided on the outer side of the fixed baffles 4006. A lifting roller 4004 for lifting materials is provided on the top surface of the main frame 4001, and a lifting point 4010 for hoisting is also provided on the top surface of the main frame 4001.

[0023] like Figure 3 and Figure 4 As shown, the main frame 4001 is a welded rectangular frame structure. The main frame 4001 is connected to the fixed baffle 4006 by bolts. The main frame 4001 includes two parallel rows of longitudinal beams 4011, which are variable cross-section polygonal beams. A front beam 4013 is provided at the front end of the longitudinal beam 4011, a rear beam 4014 is provided below the rear end of the longitudinal beam 4011, a left longitudinal beam 4015 is provided on the left side of the longitudinal beam 4011, a right longitudinal beam 4016 is provided on the right side of the longitudinal beam 4011, a left connecting beam 4017 is provided between the left longitudinal beam 4015 and the left longitudinal beam 4011, a right connecting beam 4018 is provided between the right longitudinal beam 4016 and the right longitudinal beam 4011, and a middle connecting beam 4012 is provided between the two rows of longitudinal beams 4011.

[0024] like Figure 3 and Figure 6 As shown, a connecting lug 4019 is provided above the rear end of each of the two longitudinal beams 4011, and a connecting pin 4003 is installed inside the connecting lug 4019. There are two connecting pins 4003 and two connecting lugs 4019. Two connecting plates are also provided at the corresponding positions on the loading and unloading platform. The connecting pin 4003 passes through the connecting lug 4019 and the connecting plate respectively to realize the connection between the extended section and the loading and unloading platform.

[0025] like Figure 3 and Figure 5 As shown, a positioning pin 4002 is also provided on the rear beam 4014 to cooperate with the loading and unloading platform for positioning. There are two positioning pins 4002, which can correspond to the positioning holes at the corresponding positions on the loading and unloading platform to achieve the purpose of quickly positioning the extended section on the platform. In some embodiments, the positioning pin 4002 can also be provided on the middle longitudinal beam 4011 and protrude from the plane of the rear beam 4014.

[0026] like Figure 7As shown, the idler roller 4004 includes a roller 4041 and an idler roller seat 4044 mounted on the main frame 4001. The roller 4041 has an axle 4042, which is mounted on the idler roller seat 4044. The idler roller seat 4044 is also provided with a retaining plate 4043. After the axle 4042 is installed into the idler roller seat 4044, the retaining plate 4043 is then installed to prevent the axle 4042 from accidentally falling out. In this embodiment, the idler roller seat 4044 is mainly installed on the upper surface of the left connecting beam 4017, the right connecting beam 4018, and the middle connecting beam 4012. The roller 4041 contacts the materials, and when the materials move, the sliding friction is changed into rolling friction, reducing friction and making the material conveying more labor-saving.

[0027] like Figure 8 As shown, the movable baffle 4005 includes a baffle seat beam 4051, within which a limiting baffle 4052 is provided. The limiting baffle 4052 can rotate around the baffle seat beam 4051 via a limiting baffle shaft 4053. A retaining ring 4054 and a cotter pin 4055 are respectively provided at both ends of the limiting baffle shaft 4053. When it is necessary to feed or remove material from the extended section, the limiting baffle 4052 can be rotated downwards to conceal it within the baffle seat beam 4051. During material transport, the limiting baffle 4052 can be rotated upwards to move it out of the baffle seat beam 4051, thus providing a certain limiting effect on the material. In this embodiment, the movable baffle 4005 is installed at the front end of the main frame 4001 and immediately after the front beam 4013.

[0028] like Figure 9 , Figure 10 and Figure 11 As shown, the folding walkway 4007 includes a walkway body 4071 and a walkway support 4072 mounted on a fixed baffle 4006. The walkway body 4071 can rotate around the walkway support 4072 via a walkway support pin 4073. A pad 4074 is provided at one end of the walkway support pin 4073, and a cotter pin 4075 passes through the other end of the walkway support pin 4073. In the working state, the walkway body 4071 rotates downward until it is supported by the walkway support 4072, which facilitates the passage of operators. In the transport state, the walkway body 4071 rotates upward and folds up, which can reduce the overall width of the extended section.

[0029] like Figure 9 , Figure 10 , Figure 12 and Figure 13As shown, the extended section also includes a limiting mechanism 4008 that limits the folding state of the walkway body. The limiting mechanism 4008 includes a fixed ear plate 4081 set on the fixed baffle 4006. A connecting rod 4082 is fixedly connected to the fixed ear plate 4081 by bolts 4084. A connecting hole 4076 is provided on the walkway body 4071. A locking pin 4083 is provided in the connecting hole 4076. A corresponding mounting hole is provided on the connecting rod 4082. When the walkway body 4071 rotates upward and folds, in order to prevent it from shaking, the locking pin 4083 can be inserted into the mounting hole on the connecting rod 4082 to fix the walkway body 4071. When the walkway body 4071 rotates downward, it rests flat on the walkway support 4072 under its own weight without shaking. Therefore, no additional fixation is required at this time.

[0030] like Figure 15 As shown, a drop groove 4009 is also provided on the main frame 4001. In this embodiment, two drop grooves 4009 are provided, located on the left connecting beam 4017 and the right connecting beam 4018 respectively. The drop groove 4009 includes a drop groove fold 4091 and a drop groove stiffening plate 4092. The drop groove 4009 provides clearance space for the fork teeth when loading and unloading goods into the extended section using a forklift, and protects the idler roller 4004 from damage by the fork teeth. It is a safety protection device for the extended section.

[0031] like Figure 1 and Figure 14 As shown, the height of the lifting point 4010 is lower than the height of the idler roller 4004, so it will not affect the normal transport of materials. In this embodiment, there are four lifting points 4010, which are installed on the upper surface of the connecting beam 4012.

[0032] This application is used in conjunction with a loading and unloading platform to form a loading and unloading platform with an expandable cargo carrying range. It makes up for the shortcomings of the loading and unloading platform in that the carrying capacity is difficult to fully utilize when loading and unloading cargo with low stacking density (when the cargo density is low, the total weight of the cargo is light, and the carrying surface of the loading and unloading platform can be increased, thereby increasing its carrying capacity and increasing the conveying efficiency without overloading). This improves the efficiency of loading and unloading cargo.

[0033] The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0035] If the terms "first", "second", "A", "B" or similar terms are used in this document to define components, those skilled in the art should know that the use of "first", "second", "A", "B" is merely for the convenience of describing the present invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An extension segment for a loading platform, comprising a main frame, characterized in that, The main frame has a movable baffle at the front end and a connecting pin at the rear end for connecting to the loading and unloading platform. Fixed baffles are provided on both the left and right sides of the main frame. Foldable walkways are provided on the outer side of the fixed baffles. The top surface of the main frame is provided with rollers for lifting materials and lifting points for hoisting.

2. The extended section for a loading / unloading platform according to claim 1, characterized in that, The main frame includes at least two parallel longitudinal beams. A front beam is provided at the front end of the longitudinal beam, a rear beam is provided below the rear end of the longitudinal beam, a left longitudinal beam is provided on the left side of the longitudinal beam, a right longitudinal beam is provided on the right side of the longitudinal beam, a left connecting beam is provided between the left longitudinal beam and the adjacent longitudinal beam, a right connecting beam is provided between the right longitudinal beam and the adjacent longitudinal beam, and a central connecting beam is provided between two adjacent longitudinal beams.

3. The extended section for a loading / unloading platform according to claim 2, characterized in that, A connecting lug is provided above the rear end of the longitudinal beam, and the connecting pin is installed in the connecting lug.

4. The extended section for a loading / unloading platform according to claim 2, characterized in that, The rear beam is also equipped with a positioning pin that works in conjunction with the loading and unloading platform for positioning.

5. The extended section for a loading / unloading platform according to claim 1, characterized in that, The idler roller includes a roller and an idler roller seat mounted on the main frame. The roller has an axle, which is mounted on the idler roller seat. The idler roller seat is also provided with a retaining plate to prevent the axle from falling out.

6. The extended section for a loading / unloading platform according to claim 1, characterized in that, The movable baffle includes a baffle seat beam, and a rotatable limiting baffle is provided inside the baffle seat beam.

7. The extended section for a loading / unloading platform according to claim 1, characterized in that, The folding walkway includes a walkway body and a walkway support mounted on a fixed baffle. The walkway body rotates around the walkway support to fold or open the walkway body.

8. An extended section for a loading / unloading platform according to claim 7, characterized in that, It also includes a limiting mechanism for limiting the folding state of the walkway body. The limiting mechanism includes a fixed ear plate set on a fixed baffle, a connecting rod set on the fixed ear plate, and a locking pin that can pass through the connecting rod on the walkway body.

9. An extended section for a loading / unloading platform according to claim 1, characterized in that, The main frame is also provided with drop grooves for accommodating forklift fork teeth.

10. An extended section for a loading / unloading platform according to claim 1, characterized in that, The height of the lifting point is lower than the height of the idler roller.

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