A foldable and retractable terminal platform and platform erection vehicle

Abstract

The present application discloses a foldable and retractable end platform, which belongs to the field of end platform design. It includes two parallel platform board middle sections, and a first driving unit is arranged in the installation cavity of the two platform board middle sections, and the first driving unit controls the freedom of the two platform board middle sections in the Y-axis direction; a platform board extension section I and a platform board extension section II are correspondingly hinged on both sides of each platform board middle section, and a second driving unit is installed between the platform board extension section I, the platform board extension section II and the platform board middle section, and the second driving unit works to make the platform board extension section II and the platform board extension section I4 unfold along the X-axis direction; when the present application is used, the first driving unit is used to unfold the two platform board middle sections in the Y-axis direction, and the second driving unit is used to unfold the platform board extension section I and the platform board extension section II in an arc shape in the X direction, and play the role of supporting the platform board middle section, and the telescopic is realized by quick connection, and the structural strength is large.

Description

Technical Field

[0001] The present application relates to the technical field of terminal station design, and in particular to a foldable and retractable terminal station. Background Art

[0002] Road transportation has a large carrying capacity, fast transportation speed and high efficiency, and has always been the backbone of my country's cargo, equipment and material transportation and transshipment. However, railway transportation can only achieve fixed point-to-point transportation and cannot load and unload materials or equipment in the middle of the journey or in areas without stations. With the development of railway transportation, more and more railway transportation customers require equipment that can set up temporary platforms in the middle of the journey or in areas without railway platforms. Especially in the military field, setting up temporary platforms in the field is a rigid demand.

[0003] The utility model patent with patent number CN215851232U introduces an end platform with an adjustable support structure, including a platform mid-span and a platform end span hinged on both sides, and an adjustable support structure is arranged at the lower end of the platform end span. The patent introduces the leg structure of the end platform in detail, mainly solving the problem that an external lifting mechanism is required for the erection and withdrawal of the end platform. The end platform structure is not introduced in detail. It can be seen from the patent that the end platform structure is widened by flipping side panels to ensure traffic capacity, and does not have a telescopic widening function. Summary of the invention

[0004] The purpose of the present application is to provide a foldable and retractable end platform to solve the problems in the prior art that the synchronization of the extension and retraction of the end platform is difficult to ensure, the overall structural stability is poor, and the lap plates extending from the movable part are subject to space limitations.

[0005] In order to solve the above technical problems, this application is implemented by adopting the following technical solutions:

[0006] In the first aspect, a foldable and retractable end platform comprises two parallel platform board middle sections, and a first driving unit is arranged in the mounting cavity of the two platform board middle sections, and the first driving unit controls the freedom of the two platform board middle sections in the Y-axis direction; a platform board extension section I and a platform board extension section II are correspondingly hinged on both sides of each platform board middle section, and a second driving unit is installed between the platform board extension section I, the platform board extension section II and the platform board middle section, and the second driving unit works to make the platform board extension section II and the platform board extension section I4 unfold along the X-axis direction.

[0007] Furthermore, in the present application, the two platform plate middle sections are symmetrically expanded or closed relative to the first driving part.

[0008] Further in the present application, the first driving part includes a first guide member, two second guide members and a first driving member;

[0009] The first guide member and the second guide member are correspondingly installed in the installation cavities of the two platform board middle sections, the first driving member is arranged in the middle of the first guide member, and the two ends of the first driving member are correspondingly connected to the two platform board middle sections, and the first driving member drives the two platform board middle sections to move relative to each other.

[0010] Furthermore, two of the second guide members are symmetrically installed on both sides of the first guide member.

[0011] Furthermore, the first guide member and the second guide member are both installed with a connecting rod mechanism for positioning the middle section of the platform plate;

[0012] The connecting rod mechanism includes a long swing rod and two short swing rods; the long swing rod is rotatably connected to the surface of the first guide member or the second guide member, and the ends of the long swing rod are respectively hingedly installed with one of the short swing rods on the middle section of the platform plate adjacent to it.

[0013] Furthermore, the present application discloses that the second driving part includes a second driving member and a hinge assembly, wherein one end of the second driving member is fixed to the middle section of the platform board, and the hinge assembly is hinged between the second driving member and the middle section of the platform board and the platform board extended section I or the platform board extended section II, and the second driving member acts on the hinge assembly to deform so as to make the platform board extended section II and the platform board extended section I swing.

[0014] Furthermore, the hinge assembly includes a first connecting rod; one end of the first connecting rod is connected to the end of the middle section of the platform board, and the other end is connected to the platform board extension section II or the platform board extension section I via a second connecting rod, and the other end of the second driving member is hinged to the rod body of the first connecting rod.

[0015] Furthermore, at least one guide assembly is fixed on the two second guide members;

[0016] The guide assembly comprises two roller brackets fixed at intervals on two second guide members, and a limiting roller is rotatably installed between the two roller brackets.

[0017] Preferably, observation areas are provided adjacent to each other in the middle sections of the two platform plates, and flaps are symmetrically hinged on the side surfaces of the observation areas, and the observation area is provided above the first driving part.

[0018] In a second aspect, the present application also provides a platform erection vehicle, comprising the above-mentioned foldable and retractable end platform and vehicle body and a crane, wherein the crane is arranged on the vehicle body chassis, and the first driving unit is installed on the lifting arm of the crane.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When the present application is used, the first driving unit is used to unfold the middle sections of the two platform panels in the Y-axis direction, and the second driving unit is used to unfold the extended section I and the extended section II of the platform panel in an arc shape in the X direction, and play the role of supporting the middle section of the platform panel, and the quick connection realizes telescopic movement, has high structural strength, occupies little space in the folded transportation state, has high erection efficiency, and has a high degree of automation. After unfolding, its length, width and lane dimensions can meet the needs of most vehicles and equipment for getting on and off the railway transport cart;

[0021] In addition, two guide members and a connecting rod mechanism on the corresponding guide members are provided in the first driving part, so that the middle sections of the two platform plates can be unfolded symmetrically, ensuring that the center of gravity of the device remains unchanged during the use process, avoiding deviation of the center of gravity during hoisting, laying and unfolding of the end platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the mobile platform erection vehicle in the embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the structure of the folded end platform in an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of the middle station in the unfolded state in the embodiment of the present application;

[0025] Figure 4 Three views of the end station in the embodiment of the present application;

[0026] Figure 5 for Figure 4 Sectional view in the AA direction;

[0027] Figure 6 for Figure 5 Schematic diagram of the expanded structure;

[0028] Figure 7 for Figure 4 Cross-sectional view in the BB direction;

[0029] Figure 8 for Figure 4 Cross-sectional view in CC direction;

[0030] Fig. 9 A schematic diagram of a foldable and retractable end station according to an embodiment of the present application from one viewing angle;

[0031] Fig.10 for Figure 7 The enlarged schematic diagram of the M in the middle;

[0032] Fig.11 for Figure 7 The enlarged schematic diagram of the N output;

[0033] Fig.12 for Fig.11 A schematic diagram of the structure after expansion;

[0034] Fig.13 for Fig. 9 The enlarged schematic diagram of the P point in the middle;

[0035] Fig.14 for Fig. 9 The enlarged schematic diagram of the Q in the middle;

[0036] Fig.15 for Figure 3 The enlarged schematic diagram of the S in the middle;

[0037] Fig.16 This is a schematic diagram of the structure of the embodiment of the present application when it is working;

[0038] Among them, 1 car body; 2 crane; 3 end platform; 4 platform board extension section I; 5 platform board middle section; 6 platform board extension section II; 7 middle cross beam; 8 end cross beam; 9 flip board; 10 pin I; 11 second driving member; 12 pin II; 13 first connecting rod; 14 second connecting rod; 15 nylon slider; 16 first driving member; 17 pin III; 18 connecting rod mechanism; 19 pin V; 20 pin VI; 1801 long swing rod; 1802 short swing rod; 1803 pin IV; 801 roller bracket; 802 limit roller; 803 limit block; 804 pin VII; 901 flip board body; 902 connecting block; 903 pin VIII; DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Example 1

[0040] Reference Figures 2 to 15 The present application discloses a foldable and retractable end platform, which includes two parallel platform board middle sections 5, and a first driving unit is arranged in the installation cavity of the two platform board middle sections 5, and the first driving unit controls the freedom of the two platform board middle sections 5 in the Y-axis direction; each platform board middle section 5 is hinged with a platform board extension section I4 and a platform board extension section II6 on both sides through a pin shaft I and a corresponding hinge, and a second driving unit is installed between the platform board extension section I4, the platform board extension section II6 and the platform board middle section 5, and the second driving unit works to make the platform board extension section II6 and the platform board extension section I4 unfold along the X-axis direction.

[0041] When in use, the first driving part and the second driving part are started. At this time, the two platform board middle sections 5 move relative to each other and unfold in parallel. During the process, the platform board extension section II6 and the platform board extension section I4 unfold in a fan shape at a uniform speed until they reach the extreme position. At this time, the platform board extension section II6 and the platform board extension section I4 play the role of extending and supporting the two platform board middle sections 5, and quickly fold and unfold, making the device more maneuverable and suitable for use with vehicle wheel spacings of multiple sizes.

[0042] Reference Figures 3 to 5 , the first driving part in this embodiment includes two guide members and a first driving member 16, which are respectively a first guide member 7 and two second guide members 8. The first guide member 7 and the second guide member 8 are selected from a crossbeam structure and made of high-strength steel; the first guide member 7 is slidably installed in the installation cavity in the middle of the two platform plate middle sections 5, and the installation cavity is box-shaped. The two second guide members 8 are installed in the installation cavity at the edges of the two platform plate middle sections. The two ends of the first guide member 7 are correspondingly connected to the two platform plate middle sections 5, wherein the two second guide members 8 are preferably symmetrically arranged on both sides of the first guide member 7. The first driving member 16 here is selected from a telescopic cylinder, which is installed through a pin III17. Any driving member that can achieve precise telescopic function can be used after testing, such as a cylinder, etc. Considering the sliding accuracy and smoothness between the first guide member 7, the second guide member 8 and the installation cavity of the platform plate middle section 5, refer to the attached Figure 5 , 7 , 10. Nylon sliders 15 which can be adjusted with gaskets are installed around the installation cavity to adjust the installation gap of the beam and reduce sliding friction.

[0043] Reference Figure 4 , 9 , 13, 14, in this embodiment, three connecting rod mechanisms 18 are further added to help the two platform middle sections 5 to position and move, and the connecting rod mechanisms 18 are installed on the first guide member 7 and the second guide member 8; the connecting rod mechanism 18 includes a long swing rod 1801 and two short swing rods 1802; the long swing rod 1801 is rotatably connected to the surface of the first guide member 7 or the second guide member 8, and the long swing rod 1801 at the edge is connected to the first guide member 7 or the second guide member 8 through the pin VI 20 is installed at the bottom of the second guide member 8, and the middle long swing rod 1801 is installed at the bottom of the first guide member 7 through the pin V19; the ends of the long swing rod 1801 are respectively hinged to the adjacent platform plate middle section 5 to install a short swing rod 1802; the short swing rod 1802 is movably installed on the long swing rod 1801 and the platform plate middle section 5 through the pin IV1803; the connecting rod mechanism 18 can make the middle crossbeam 7 and the end crossbeam 8 always maintain the center position of the platform plates on both sides, avoiding the deviation of the center of gravity when hoisting, laying and unfolding the end platform 3.

[0044] Reference Figure 7 , 1112. In this embodiment, the second driving part includes a second driving member 11 and a hinge assembly. One end of the second driving member 11 is fixed on the middle section 5 of the platform board. The hinge assembly is hinged between the second driving member 11 and the middle section 5 of the platform board and the platform board extension section I4 or the platform board extension section II6. The second driving member 11 acts on the hinge assembly to deform so that the platform board extension section II6 and the platform board extension section I4 swing.

[0045] The second driving member 11 here is a tilting cylinder. Fig.11 , 12 It can be seen that the hinge assembly includes a first connecting rod 13 and a second connecting rod 14. One end of the tilting oil cylinder is mounted on the middle section 5 of the platform plate through a pin shaft II 12, and the other end is mounted on the first connecting rod 13 through a pin shaft II 12. The upper end of the first connecting rod 13 is mounted on the middle section 5 of the platform plate through a pin shaft II 12, and the lower end is hinged to the second connecting rod 14 through a pin shaft II 12. The other end of the second connecting rod 14 is mounted on the extended section I 4 or the extended section II 6 of the platform plate through a pin shaft II 12.

[0046] Reference Figure 3 and 15 In this embodiment, at least one guide assembly is fixed on the two second guide members 8; the guide assembly includes two roller brackets 801 fixed to the two second guide members 8 at an interval, and a limit roller 802 is rotatably installed between the two roller brackets 801. Specifically, a limit block 803 can be installed on the roller bracket 801. In actual work, when the end platform is used in conjunction with a crane, the limit block 803 can be against the side of the boom to prevent the end platform from jumping left and right when hoisting, thereby improving stability.

[0047] Reference Figure 3 and 5 6. In this embodiment, observation areas are also provided adjacent to the middle sections 5 of the two platform boards, and flaps 9 are symmetrically hinged on the edge surfaces of the observation areas. The observation area is provided above the first driving unit. The flap 9 includes a flip plate body 901, a connecting block 902 and a pin shaft VIII 903. One end of the connecting block 902 is connected to the flip plate body 901 through the pin shaft VIII 903, and the other end is connected to the middle section 5 of the platform board. The flap 9 is manually flipped to the side of the middle section 5 of the platform board and flush with it, filling the observation area of ​​the middle section 5 of the platform board to make it a complete driving channel. Example 2

[0048] Reference Figure 1 and 15In this embodiment, a platform erection vehicle is disclosed, including the foldable and retractable end platform and vehicle body 1 and crane 2 in embodiment 1, the crane 2 is arranged on the chassis of the vehicle body 1, and the first guide member 7 is installed on the boom of the crane 2, wherein the crane 2 in this embodiment can move on the chassis of the vehicle body 1, and the boom of the crane 2 is retractable.

[0049] Specifically in use:

[0050] The process of erecting the terminal platform: When erecting the terminal platform 3, the movable crane 2 lifts the terminal platform 3 and moves it to the rear of the erection vehicle chassis 1. The two-section arm of the movable crane 2 extends, and then the terminal platform 3 is controlled to be unfolded. At this time, the arm of the movable crane 2 sinks, and one end of the terminal platform is placed on the railway transport flatbed car, and the other end is placed on the ground;

[0051] The process of the terminal platform deployment and retraction is as follows: first, the four sets of second driving members 11 are extended to drive the four sets of extended platform sections to flip, until the second driving members 11 are extended to the maximum length, and the extended platform sections are connected to the middle section of the platform section to form a whole; then the first driving member 16 is extended, and the distance between the two rows of platform panels composed of the extended platform sections and the middle section 5 of the platform panel increases, until the oil cylinder is extended to the maximum length, and the terminal platform 3 is deployed. For the completed state, please refer to the attached figure. Fig.16 .

[0052] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A foldable and retractable terminal platform, characterized in that: The invention comprises two platform plate middle sections (5) arranged in parallel, and a first driving unit is arranged in the mounting cavity of the two platform plate middle sections (5), and the first driving unit controls the degree of freedom of the two platform plate middle sections (5) in the Y-axis direction; a platform plate extension section I (4) and a platform plate extension section II (6) are correspondingly hinged on both sides of each platform plate middle section (5), and a second driving unit is installed between the platform plate extension section I (4), the platform plate extension section II (6) and the platform plate middle section (5), and the second driving unit works to make the platform plate extension section II (6) and the platform plate extension section I (4) unfold along the X-axis direction; The second driving part comprises a second driving member (11) and a hinge assembly, one end of the second driving member (11) is fixed to the middle section (5) of the platform plate, the hinge assembly is hinged between the second driving member (11) and the middle section (5) of the platform plate and the extended section I (4) of the platform plate or the extended section II (6) of the platform plate, and the second driving member (11) acts on the hinge assembly to deform so as to make the extended section II (6) of the platform plate and the extended section I (4) of the platform plate swing; The hinge assembly comprises a first connecting rod (13); one end of the first connecting rod (13) is connected to the end of the platform plate middle section (5), and the other end is connected to the platform plate extension section II (6) or the platform plate extension section I (4) via a second connecting rod (14); the other end of the second driving member (11) is hinged to the rod body of the first connecting rod (13); a convex body is provided at the non-end portion of the rod body of the first connecting rod (13), and the other end of the second driving member (11) is hinged to the convex body; The first driving part comprises a first guide member (7), two second guide members (8) and a first driving member (16); The first guide member (7) and the second guide member (8) are correspondingly mounted in the mounting cavities of the two platform plate middle sections (5); the first driving member (16) is arranged in the middle of the first guide member (7), and the two ends of the first driving member (16) are correspondingly connected to the two platform plate middle sections (5); the first driving member (16) drives the two platform plate middle sections (5) to move relative to each other; at least one guide component is also fixed to the two second guide members (8); The guide assembly comprises two roller brackets (801) fixed at intervals on two second guide members (8), and a limit roller (802) is rotatably mounted between the two roller brackets (801); a limit block (803) is mounted on the roller bracket (801); in actual operation, when the end platform is used in conjunction with a crane, the limit block (803) can be pressed against the side of the crane arm.

2. The foldable and retractable end station according to claim 1, characterized in that: The two platform plate middle sections (5) are symmetrically expanded or closed relative to the first driving part.

3. The foldable and retractable end station according to claim 1, characterized in that: The two second guide members (8) are symmetrically mounted on both sides of the first guide member (7).

4. The foldable and retractable end station according to claim 3, characterized in that: The first guide member (7) and the second guide member (8) are both equipped with a connecting rod mechanism (18) for positioning the middle section (5) of the platform plate; The connecting rod mechanism (18) comprises a long swing rod (1801) and two short swing rods (1802); the long swing rod (1801) is rotatably connected to the surface of the first guide member (7) or the second guide member (8), and the ends of the long swing rod (1801) are respectively hingedly mounted with one of the short swing rods (1802) on the adjacent platform plate middle section (5).

5. The foldable and retractable end station according to claim 1, characterized in that: Adjacent sides of the middle sections (5) of the two platform plates are provided with observation areas, and flaps (9) are symmetrically hinged on the side surfaces of the observation areas, and the observation area is arranged above the first driving part.

6. A platform erection vehicle, characterized in that: It comprises a foldable and telescopic end platform and a vehicle body (1) and a crane (2) according to any one of claims 1 to 5, wherein the crane (2) is arranged on the chassis of the vehicle body (1), and the first driving unit is installed on the lifting arm of the crane (2).

Images