Extensible carrying platform

Abstract

The invention provides an extensible carrying platform which is applied to the technical field of carrying platforms, and is characterized in that the extensible carrying platform comprises a frame and driving wheels arranged at the bottom of the frame, and a folding structure is arranged on the frame in an extensible mode; the folding structure comprises a length expansion structure, a width expansion structure and a compensation expansion structure used for compensating gaps formed after the length expansion structure and the width expansion structure are expanded so that the folding structure can form the carrying platform after being expanded. The carrying platform has the technical effects that the length expansion structure, the width expansion structure and the compensation expansion structure can automatically expand and increase the area of the carrying platform, so that the transportation capacity of the carrying platform is enhanced; the length expansion structure, the width expansion structure and the compensation expansion structure can be automatically folded under the untransported condition, so that the size is reduced, and the device can conveniently pass through a narrow channel in the folded state; expansion and folding of the carrying platform are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of carrier platforms, and particularly to an expandable carrier platform. Background Art

[0002] A carrier platform is a mechanical device used for transporting, carrying, and positioning materials, and is widely applied in industries, logistics, and special environments (such as nuclear power, tunnels, etc.). Its core functions include: 1. Load-bearing function: providing a stable support surface for placing goods or equipment; 2. Moving function: achieving position transfer through wheeled, tracked, or rail-mounted chassis; 3. Adaptability: completing transportation tasks in complex terrains (such as steps, ramps) or confined spaces. In special scenarios such as nuclear power, the carrier platform needs to additionally meet requirements such as high rigidity, compatibility with radiation-proof materials, and passability in narrow spaces.

[0003] Currently, the commonly used carrier platforms in the nuclear power environment mainly include fixed-size transport vehicles, modular splicing platforms, and hydraulic expansion platforms, but all have significant deficiencies: 1. The platform size is non-adjustable. If designed to pass through narrow channels, the load-bearing area is insufficient and large-size equipment cannot be transported; 2. If the platform is enlarged to meet the transportation requirements, it cannot pass through narrow channels, and manual disassembly and handling are required, resulting in low efficiency and an increased risk of personnel radiation exposure. Summary of the Invention

[0004] The purpose of the present invention is to provide an expandable carrier platform, and its advantage is that the expansion and folding of the carrier platform can be realized, so that it is convenient to pass through narrow channels in the folded state, and the transportation capacity can be enhanced in the expanded state.

[0005] To achieve the above purpose and other related purposes, the present invention provides the following technical solutions:

[0006] An expandable carrier platform includes a vehicle frame and drive wheels provided at the bottom of the vehicle frame, and a folding structure is expandably provided on the vehicle frame;

[0007] The folding structure includes a length expansion structure, a width expansion structure, and a compensation expansion structure for compensating for the gap after the length expansion structure and the width expansion structure are unfolded so that a carrier platform is formed after the folding structure is expanded.

[0008] In an embodiment of the present invention, a wheel frame is telescopically provided on the vehicle frame, and the drive wheels are rotatably provided on the wheel frame;

[0009] A first driving member for automatically extending or contracting the wheel frame is provided on the vehicle frame.

[0010] In an embodiment of the present invention, the wheel frame includes four sliding rods distributed in an X shape at the bottom of the vehicle frame; four sliding grooves respectively slidably matched with the four sliding rods are arranged at the bottom of the vehicle frame; and the first driving member drives the four sliding rods to slide synchronously in the sliding grooves.

[0011] In an embodiment of the present invention, driving wheels are arranged at the bottoms of the four sliding rods, and shock-absorbing mechanisms are arranged on the driving wheels.

[0012] In an embodiment of the present invention, support columns are fixedly arranged on the four sliding rods.

[0013] In an embodiment of the present invention, the length extension structure includes two strip-shaped frames arranged in a cross shape and slidably connected to the vehicle frame, and a length extension driving member arranged on the vehicle frame and used for driving the two strip-shaped frames to extend or contract in opposite directions;

[0014] Vertical front and rear protection plates are fixedly arranged at one ends of the two strip-shaped frames.

[0015] In an embodiment of the present invention, the width extension structure includes two side plates respectively located on both sides of the length extension structure and hinged to the vehicle frame, and a width extension driving member arranged on the vehicle frame and used for driving the two side plates to expand or fold;

[0016] Left and right protection plates are fixedly arranged on the outer sides of the two side plates.

[0017] In an embodiment of the present invention, the compensation extension structure includes four angle plates respectively hinged to the two ends of the two side plates, and four first compensation driving members respectively used for driving the four angle plates to expand or fold;

[0018] The first compensation driving member is hinged to the side plate, and its moving end is hinged to the angle plate;

[0019] Front and rear compensation protection plates are fixedly arranged at the ends of the angle plates.

[0020] In an embodiment of the present invention, a connecting plate is connected between the side plate and the angle plate, and the two ends of the connecting plate are respectively hinged to the side plate and the angle plate.

[0021] In an embodiment of the present invention, left and right compensation protection plates are hinged to the angle plates, and a second compensation driving member for driving the left and right compensation protection plates to expand or fold is arranged on the angle plates;

[0022] The second compensation driving member is hinged to the angle plate, and its moving end is hinged to the left and right compensation protection plates.

[0023] As described above, a scalable transport platform of the present invention has the following beneficial effects:

[0024] The driving wheel is used to drive the vehicle frame to move forward or backward automatically, realizing automatic transportation; the length extension structure can increase the length of the carrying platform after extension, the width extension structure can increase the width of the carrying platform after extension, and the compensation extension structure can compensate for the gap after the length extension structure and the width extension structure are extended, increasing the area of the carrying platform in the extended state, thereby enhancing the transportation capacity of the carrying platform; and in the case of no transportation, the length extension structure, the width extension structure and the compensation extension structure can be automatically folded to reduce its volume, so as to facilitate passing through narrow channels in the folded state; realizing the extension and folding of the carrying platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic diagram of the overall structure of the carrying platform according to an embodiment of the present invention in a folded state;

[0026] Figure 2 FIG. is a front view of the overall structure of the carrying platform according to an embodiment of the present invention in a folded state;

[0027] Figure 3 FIG. is a schematic diagram of the structure of the wheel frame according to an embodiment of the present invention;

[0028] Figure 4 FIG. is a schematic diagram of the structure of the first driving member driving the sliding rod according to an embodiment of the present invention;

[0029] Figure 5 FIG. is a schematic diagram of the structure of the driving wheel according to an embodiment of the present invention;

[0030] Figure 6 FIG. is a schematic diagram of the structure of the length extension structure according to an embodiment of the present invention;

[0031] Figure 7 FIG. is a schematic diagram of the front view of the width extension structure according to an embodiment of the present invention;

[0032] Figure 8 FIG. is a schematic diagram of the back view of the width extension structure according to an embodiment of the present invention;

[0033] Figure 9 FIG. is a schematic diagram of the front view of the structure of the compensation extension structure according to an embodiment of the present invention;

[0034] Figure 10 FIG. is a schematic diagram of the back view of the structure of the compensation extension structure according to an embodiment of the present invention;

[0035] Figure 11 FIG. is a schematic diagram of the overall structure of the carrying platform according to an embodiment of the present invention in an extended state;

[0036] Figure 12 FIG. is a top view of the overall structure of the carrying platform according to an embodiment of the present invention in an extended state.

[0037] Reference numerals: 1, vehicle frame; 2, wheel frame; 21, drive wheel; 23, sliding rod; 24, shock absorption mechanism; 25, support column; 26, mounting plate; 27, mounting bracket; 28, wheel; 29, servo motor; 210, first driving member; 3, folding structure; 31, length extension structure; 311, strip-shaped frame; 312, front and rear protection plates; 313, length extension driving member; 32, width extension structure; 321, side plate; 322, left and right protection plates; 323, width extension driving member; 33, compensation extension structure; 331, angle plate; 332, first compensation driving member; 333, front and rear compensation protection plates; 334, connecting plate; 34, left and right compensation protection plates; 35, second compensation driving member; 4, winch for retracting and extending; 5, lifting ring. Detailed implementation manners

[0038] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0039] Please refer to Figures 1 to 12 Note that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention.

[0040] Please refer to Figure 1 and Figure 2 , the present invention provides an expandable carrying platform, including a vehicle frame 1 and a drive wheel 21 arranged at the bottom of the vehicle frame 1, and a folding structure 3 is expandably arranged on the vehicle frame 1;

[0041] Since this expandable carrying platform works in a nuclear power environment and is line-controlled by a cable; a winch 4 for retracting and extending the drive cable is fixedly arranged at the bottom of the vehicle frame 1, and the winch 4 can drive the cable to retract and extend as the vehicle moves; the servo motor 29 on the winch 4 drives in a torque mode to ensure that the cable is in a slightly tensioned state;

[0042] The folding structure 3 includes a length extension structure 31, a width extension structure 32, and a compensation extension structure 33 for compensating the gap after the length extension structure 31 and the width extension structure 32 are unfolded so that the folding structure 3 forms a carrying platform after expansion.

[0043] Please refer to Figure 3 、 Figure 4 and Figure 5 , a wheel frame 2 is telescopically arranged on the frame 1, and a driving wheel 21 is arranged on the wheel frame 2. The driving wheel 21 is installed on the telescopic wheel frame 2 to improve the anti-overturning performance; a first driving member 210 for driving the wheel frame 2 to automatically extend or contract is arranged on the frame 1; the first driving member 210 in this embodiment can be a gear-rack mechanism driven by a motor; the wheel frame 2 includes four sliding rods 23 distributed in an X shape at the bottom of the frame 1; four sliding grooves respectively in sliding fit with the four sliding rods 23 are arranged at the bottom of the frame 1; in this embodiment, four cylinders or electric push rods can be arranged to drive the four sliding rods 23 to slide synchronously in the sliding grooves; driving wheels 21 are arranged at the bottoms of the four sliding rods 23. The driving wheel 21 includes a mounting plate 26 bolted to the end of the sliding rod 23, a mounting frame 27 connected to the mounting plate 26, a wheel 28 rotatably connected to the mounting frame 27, and a servo motor 29 fixed on the mounting frame 27 and used for driving the wheel 28 to rotate; the wheel 28 in this embodiment is a Mecanum wheel, and the Mecanum wheel is driven by the servo motor 29 through a speed reducer;

[0044] A shock absorption mechanism 24 is arranged on the driving wheel 21. The shock absorption mechanism 24 in this embodiment is a spring shock absorption system. Two springs are arranged on one of the driving wheels 21. One end of each of the two springs is fixedly connected to the mounting plate 26, and the other end of each of the two springs is fixedly connected to the mounting frame 27. The maximum supporting force of each spring is 1.25t, the pre-tightening force is 0.5t, and the maximum stroke of the shock absorption system is 45mm, which can realize the obstacle-crossing ability of 40mm for a single wheel.

[0045] Please refer to Figure 3 , support columns 25 are fixedly arranged above the four sliding rods 23. The first driving member 210 drives the sliding rods 23 to expand and contract. In the contracted state of the sliding rods 23, the support columns 25 are used to support the four corner positions of the folding structure 3; in the extended state of the sliding rods 23, the support columns 25 are used to support the four corner positions of the carrying platform, improving the support ability and support stability.

[0046] Please refer to Figure 5 , the length extension structure 31 includes two strip-shaped frames 311 and a length extension driving member 313. The two strip-shaped frames 311 are arranged along the length direction of the frame 1. The two strip-shaped frames 311 are cross-arranged and slidably connected to the frame 1. The length of the strip-shaped frame 311 is less than or equal to the length of the frame 1; the length extension driving member in this embodiment can be a gear-rack mechanism driven by a motor; the length extension driving member 313 is arranged on the frame 1, and the length extension driving member 313 drives the two strip-shaped frames 311 to horizontally slide in opposite directions on the frame 1 to realize extension or contraction; front and rear guard plates 312 are vertically fixed at opposite ends of the two strip-shaped frames 311.

[0047] Please refer to Figure 7 and Figure 8 , the width expansion structure 32 includes two side plates 321 and a width expansion driving member 323. The two side plates 321 are respectively located on both sides of the strip-shaped frame 311 and are hinged to the vehicle frame 1. The length of the side plate 321 is the same as the length of the vehicle frame 1. In this embodiment, the width expansion driving member 323 can be a gear mechanism driven by a motor. The width expansion driving member 323 is arranged on the vehicle frame 1. When the side plate 321 expands, the width expansion driving member 323 is used to drive the side plate 321 to rotate until the side plate 321 is coplanar with the upper end surface of the strip-shaped frame 311. When the side plate 321 folds, the width expansion driving member 323 is used to drive the side plate 321 to rotate until the included angle with the upper end surface of the vehicle frame 1 is 90°, so as to fold and retract the side plate 321 on both sides of the vehicle frame 1. Thus, the two side plates 321 can be expanded or folded. At both ends of the bottom of the two side plates 321, suspension rings 5 are hinged. Furthermore, when the side plates 321 are folded and retracted on the vehicle frame 1, the suspension rings 5 are located at the four corners of the vehicle frame 1, which is convenient for the expandable transport platform to be folded into the folding structure 3 for hoisting when it is put away after use. On the outer sides of the two side plates 321, left and right guard plates 322 are fixedly arranged, and the left and right guard plates 322 are perpendicular to the side plates 321.

[0048] Please refer to Figure 7 and Figure 10 , the compensation expansion structure 33 includes four corner plates 331 and four first compensation driving members 332. The four corner plates 331 are respectively hinged to the two ends of the two side plates 321. A connecting plate 334 is connected between the corner plate 331 and the side plate 321. One end of the connecting plate 334 is hinged to the side plate 321, and the other end of the connecting plate 334 is hinged to the corner plate 331.

[0049] Four first compensation driving members 332 are respectively hinged to the two ends of the two side plates 321. The first compensation driving member 332 in this embodiment can be a first air cylinder. The cylinder body of the first air cylinder is hinged to the end of the side plate 321, and the piston rod of the first air cylinder is hinged to the angle plate 331. The first compensation driving member 332 drives the angle plate 331, so that the angle plate 331 and the connecting plate 334 rotate. When the angle plate 331 expands, the first compensation driving member 332 drives the angle plate 331 and the connecting plate 334 to rotate to be coplanar with the side plate 321, thereby compensating for the gap between the expanded strip-shaped frame 311 and the side plate 321, so that the carrying platform is a complete support platform. When the angle plate 331 folds, the first compensation driving member 332 drives the angle plate 331 and the connecting plate 334 to rotate until the angle plate 331 is parallel to the side plate 321 and the connecting plate 334 is perpendicular to the side plate 321 and the angle plate 331. Among them, the angle plate 331 hinged to one side plate 321 is relatively retracted to one side of the side plate 321. Furthermore, the expansion and folding of the four angle plates 331 are realized. And the sum of the lengths of the two angle plates 331 is equal to the length of the vehicle frame 1, and the width of the angle plate 331 is equal to the width of the side plate 321. The front and rear compensation guard plates 333 are fixedly arranged at the end of the angle plate 331.

[0050] Please refer to Figure 9 and Figure 10 As shown in FIGS. and, a left and right compensation guard plate 34 is hinged to one side of the angle plate 331, and a second compensation driving member 35 is hinged to the angle plate 331. The second compensation driving member 35 in this embodiment can be a second air cylinder. The cylinder body of the second air cylinder is hinged to the angle plate 331, and the piston rod of the second air cylinder is hinged to the left and right compensation guard plate 34. The second compensation driving member 35 can drive the left and right compensation guard plate 34 to rotate. When the left and right compensation guard plate 34 expands, the second compensation driving member 35 drives the left and right compensation guard plate 34 to rotate until the left and right compensation guard plate 34 is perpendicular to the angle plate 331 and is located on the side of the angle plate 331. When the left and right compensation guard plate 34 folds, the second compensation driving member 35 drives the left and right compensation guard plate 34 to rotate until the included angle between the left and right compensation guard plate 34 and the angle plate 331 is less than 90°, so that the left and right compensation guard plate 34 is located between the side plate 321 and the angle plate 331 and is retracted, thereby realizing the expansion and folding of the left and right compensation guard plate 34.

[0051] Brief description of the usage process:

[0052] Please refer to Figure 11 and Figure 12, 1. Expansion process (the process of expanding the folding structure 3 to form the carrying platform): The length expansion driving member 313 drives the two strip-shaped frames 311 to horizontally extend outward, increasing the length of the carrying platform; the width expansion driving member 323 is used to drive the side plate 321 to rotate until the side plate 321 is coplanar with the upper end surface of the strip-shaped frame 311, increasing the width of the carrying platform; the first compensation driving member 332 drives the angle plate 331 and the connecting plate 334 to rotate until they are coplanar with the side plate 321, thereby compensating for the gap between the expanded strip-shaped frame 311 and the side plate 321, making the carrying platform a complete support platform; the second compensation driving member 35 drives the left and right compensation guard plates 34 to rotate until the left and right compensation guard plates 34 are perpendicular to the angle plate 331 and are located on the side of the angle plate 331; thus forming a carrying platform with strong transportation capacity; among them, the front and rear guard plates 312, the left and right guard plates 322, the front and rear compensation guard plates 333, and the left and right compensation guard plates 34 are located around the carrying platform and are used to block the goods on the carrying platform to prevent the goods from falling during transportation;

[0053] Please refer to Figure 1 and Figure 2 , 2. Folding process (the process of folding the carrying platform to form the folding structure 3): The second compensation driving member 35 drives the left and right compensation guard plates 34 to rotate until the included angle between the left and right compensation guard plates 34 and the angle plate 331 is less than 90°; the first compensation driving member 332 drives the angle plate 331 and the connecting plate 334 to rotate until the angle plate 331 is parallel to the side plate 321 and the connecting plate 334 is perpendicular to the side plate 321 and the angle plate 331; the width expansion driving member 323 is used to drive the side plate 321 to rotate until the included angle with the upper end surface of the vehicle frame 1 is 90°, thereby folding and retracting the side plate 321 on both sides of the vehicle frame 1; at this time, the angle plate 331 hinged to one side plate 321 is relatively retracted on one side of the side plate 321, and the left and right compensation guard plates 34 are located between the retracted side plate 321 and the angle plate 331; the length expansion driving member 313 drives the two strip-shaped frames 311 to horizontally retract inward, so that the carrying platform forms a folding structure 3 with a smaller volume after folding; thus facilitating passage through a narrow passage in the folded state.

[0054] In summary, the driving wheel 21 of the present invention is used to drive the vehicle frame 1 to move forward or backward automatically, realizing automatic transportation; the length expansion structure 31 can increase the length of the carrying platform after expansion, the width expansion structure 32 can increase the width of the carrying platform after expansion, and the compensation expansion structure 33 can compensate for the gap after the expansion of the length expansion structure 31 and the width expansion structure 32, increasing the area of the carrying platform in the expanded state, thereby enhancing the transportation capacity of the carrying platform; and when not in transportation, the length expansion structure 31, the width expansion structure 32, and the compensation expansion structure 33 can be automatically folded to reduce their volume, so as to facilitate passage through a narrow passage in the folded state; realizing the expansion and folding of the carrying platform.

[0055] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An expandable carrying platform, comprising a frame (1) and a driving wheel (21) arranged at the bottom of the frame (1), characterized in that: The frame (1) is expandably provided with a folding structure (3); The folding structure (3) comprises a length expansion structure (31), a width expansion structure (32), and a compensating expansion structure (33) for compensating for a gap after the length expansion structure (31) and the width expansion structure (32) are unfolded so that the folding structure (3) can be expanded to form a carrying platform.

2. The expandable carrier platform according to claim 1, characterized in that: The vehicle frame (1) is telescopically provided with a wheel frame (2), and the driving wheel (21) is rotatably provided on the wheel frame (2); The vehicle frame (1) is provided with a first driving member (210) for driving the wheel frame (2) to automatically extend or retract.

3. An expandable carrier platform according to claim 2, characterized in that: The wheel frame (2) comprises four slide bars (23) distributed in an X shape at the bottom of the frame (1); the bottom of the frame (1) is provided with four slide grooves respectively cooperating with the four slide bars (23); the first driving member (210) drives the four slide bars (23) to slide synchronously in the slide grooves.

4. The expandable carrier platform according to claim 3, characterized in that: A driving wheel (21) is provided at the bottom of each of the four sliding rods (23), and a shock absorbing mechanism (24) is provided on the driving wheel (21).

5. The expandable carrier platform according to claim 3, characterized in that: Support columns (25) are fixedly arranged on the four sliding rods (23).

6. The expandable carrier platform according to claim 1, characterized in that: The length extension structure (31) comprises two cross-arranged bar frames (311) slidably connected to the vehicle frame (1), and a length extension driving member (313) arranged on the vehicle frame (1) and used for driving the two bar frames (311) to extend or contract in opposite directions; Front and rear guard plates (312) are vertically fixed to one end of the two strip frames (311).

7. The expandable carrier platform according to claim 1, characterized in that: The width expansion structure (32) comprises two side panels (321) respectively located on both sides of the length expansion structure (31) and hinged on the vehicle frame (1), and a width expansion driving member (323) arranged on the vehicle frame (1) and used for driving the two side panels (321) to expand or fold; Left and right guard plates (322) are fixedly arranged on the outer sides of the two side plates (321).

8. The expandable carrier platform according to claim 7, characterized in that: The compensating expansion structure (33) comprises four corner plates (331) respectively hinged at both ends of the two side plates (321) and four first compensating driving members (332) respectively used to drive the four corner plates (331) to expand or fold; The first compensating driving member (332) is hinged to the side plate (321) and its action end is hinged to the angle plate (331); Front and rear compensation guard plates (333) are fixedly arranged at the ends of the angle plate (331).

9. The expandable carrier platform according to claim 8, characterized in that: A connecting plate (334) is connected between the side plate (321) and the angle plate (331), and two ends of the connecting plate (334) are respectively hinged to the side plate (321) and the angle plate (331).

10. The expandable carrier platform according to claim 8, characterized in that: The angle plate (331) is hingedly connected to left and right compensation guard plates (34), and the angle plate (331) is provided with a second compensation driving member (35) for driving the left and right compensation guard plates (34) to expand or fold; The second compensation driving member (35) is hinged to the angle plate (331) and its action end is hinged to the left and right compensation guard plates (34).

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