Short-installation, low-thickness and long-stroke telescopic platform

Abstract

The invention relates to the technical field of airport ground equipment, in particular to a short-installation, low-thickness and long-stroke telescopic platform which comprises a fixed platform, a movable platform, a telescopic platform, an extension assembly, a movable bottom beam, a movable oil cylinder, a telescopic oil cylinder and a platform cross beam. Through cooperative use of the fixed platform, the movable platform, the telescopic platform, the extension assembly, the movable bottom beam, the movable oil cylinder, the telescopic oil cylinder and the platform cross beam, the requirement for the operation function of left-right and front-back movement of the operation platform can be met, and meanwhile the requirement for bearing of large heavy objects can be met; the whole vehicle can meet the requirement for the lower platform height and the larger platform telescopic operation stroke, in addition, due to the fact that the platform is short, the length of the whole vehicle can be reduced, the good turning trafficability is achieved, the requirement for the high performance of the whole vehicle can be better met, and the problems that an existing food vehicle operation platform cannot be lower in height, and the working efficiency is poor are solved. And the turning trafficability is difficult to be better.

Description

Technical Field

[0001] The invention relates to the technical field of airport ground equipment, and in particular to a short-mounted, low-thick, long-stroke telescopic platform. Background Art

[0002] The food truck's operating platform is fixed at the front of the refrigerated compartment and above the cab, and will automatically slide down to be flush with the floor as the compartment is lifted. When the compartment is lowered to the bottom, the platform is limited by the door frame at the bottom and does not interfere with the cab, staying on top of the cab.

[0003] As airport aircraft food trucks need to meet the needs of more and more domestic regional aircraft operations, the low cabin doors require a lower platform operating height. However, the modification of most commercial chassis cabs is difficult. In order to meet the operational needs, the food truck compartment platform needs to move left and right, and also needs to be extended front and back. It must also meet the requirements of heavy loads to ensure sufficient safety factors. The movable structure accounts for a large proportion, and the platform structure frame is thick. Because the platform can only be arranged on the top of the cab, sufficient clearance must be reserved between the bottom of the platform and the chassis cab, so the platform height is difficult to lower.

[0004] Since the food operation platform requires a lower structural frame thickness and a longer telescopic operation stroke, and at the same time, the carriage platform cannot be too long to avoid affecting the vehicle's turning performance (channel circle diameter), the movable platform should be as short as possible and the forward extension design should be small, based on the above requirements, the market needs a short, low-thick, long-stroke telescopic platform. Summary of the invention

[0005] The purpose of the present invention is to provide a short-sleeved, low-thickness, long-stroke telescopic platform. In addition to meeting the basic left-right movement and front-back telescopic operating functions, it achieves a lower structural frame thickness, a longer telescopic operating stroke, and a shorter platform length, while also meeting the demand for carrying larger heavy objects.

[0006] To achieve the above-mentioned objectives, the present invention provides a short-mounted, low-thick, long-stroke telescopic platform, comprising a fixed platform, a mobile platform, a telescopic platform, an extension assembly, a mobile bottom beam, a mobile cylinder, a telescopic cylinder and a platform crossbeam, the mobile platform being arranged at the bottom of the fixed platform, the telescopic platform being arranged in the mobile platform frame, the extension assembly being arranged outside the telescopic platform, the mobile bottom beam being arranged at the lower front side of the fixed platform, the tail end of the mobile cylinder being fixed to the right side beam at the bottom of the fixed platform, the rod end being connected to the mobile platform, the telescopic cylinder being arranged on a side of the mobile bottom beam close to the telescopic platform, an anti-collision rubber cylinder being installed on the front side of the platform crossbeam, and the rear side being hinged to the front crossbeam of the telescopic platform.

[0007] Wherein, a channel steel guide rail is arranged at the bottom of the fixed platform as a reinforcing cross beam.

[0008] Wherein, a support roller is arranged at the rear end cross beam of the mobile platform, and the support roller is in contact with the inside of the channel steel guide rail to support the mobile platform in a vertical direction.

[0009] Among them, limiting rollers are fixed at both ends of the tail of the mobile platform to prevent the mobile platform from moving backward. The limiting rollers are also arranged behind the middle beam of the mobile platform and contact the rear side of the middle beam of the fixed platform to achieve the purpose of limiting forward in the horizontal direction.

[0010] The center beam of the mobile platform is welded with high-strength seamless rectangular tubes to reduce the frame thickness of the mobile platform.

[0011] The movable bottom beam and the bottom side beams of the fixed platform are fixed by bolting, and a long wear-resistant nylon plate is laid on the upper part of the movable bottom beam.

[0012] Among them, the middle beam of the mobile platform is sleeved on the outside of the mobile bottom beam of the fixed platform. After the mobile platform is installed, the inner bottom of the middle beam of the mobile platform contacts the upper surface of the nylon plate on the mobile bottom beam, which provides vertical support for the middle part of the mobile platform.

[0013] The short-mounted, low-thick, long-stroke telescopic platform of the present invention can meet the operating function requirements of left and right, front and back movement of the working platform and can also bear larger heavy objects through the coordinated use of the fixed platform, the mobile platform, the telescopic platform, the extension assembly, the mobile bottom beam, the mobile cylinder, the telescopic cylinder and the platform cross beam. In addition, the whole vehicle can achieve lower platform height requirements and larger platform telescopic operating stroke requirements. In addition, since the platform is shorter, the length of the whole vehicle can be reduced, achieving better turning passability, so as to better serve the high performance requirements of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of a short-mounted, low-thickness, long-stroke telescopic platform according to the first embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of the connection between the platform crossbeam and the anti-collision rubber cylinder according to the first embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram of the connection between the telescopic oil cylinder and the movable bottom beam according to the first embodiment of the present invention.

[0018] Figure 4It is a schematic structural diagram of a wear-resistant nylon plate installed on a movable bottom beam in the first embodiment of the present invention.

[0019] In the figure: 101-fixed platform, 102-mobile platform, 103-telescopic platform, 104-extension component, 105-mobile bottom beam, 106-mobile cylinder, 107-telescopic cylinder, 108-platform beam, 109-channel steel guide rail, 110-limiting roller, 111-support roller, 112-wear-resistant nylon plate, 113-anti-collision rubber cylinder, 114-mobile roller, 115-personnel anti-fall guardrail, 116-telescopic folding guardrail. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0021] First embodiment:

[0022] See also Figures 1 to 4 The present invention provides a short-mounted, low-thickness, long-stroke telescopic platform, including a fixed platform 101, a mobile platform 102, a telescopic platform 103, an extension component 104, a mobile bottom beam 105, a mobile cylinder 106, a telescopic cylinder 107 and a platform cross beam 108.

[0023] In this embodiment, through the coordinated use of the fixed platform 101, the mobile platform 102, the telescopic platform 103, the extension component 104, the mobile bottom beam 105, the mobile cylinder 106, the telescopic cylinder 107 and the platform cross beam 108, the operating function requirements of the working platform for left and right, front and back movement can be met, and at the same time, it can meet the requirements of carrying larger heavy objects. In addition, it can meet the requirements of lower platform height and larger operating stroke, and can also meet the requirements of lower front and back telescopic movement and better turning passability, and better serve the high performance requirements of the whole vehicle, which solves the technical problems that the existing food truck compartment platform cannot realize the requirements of left and right, front and back operating functions, and cannot meet the requirements of carrying larger heavy objects.

[0024] Among them, the mobile platform 102 is arranged at the bottom of the fixed platform 101, the telescopic platform 103 is arranged in the frame of the mobile platform 102, the extension component 104 is arranged outside the telescopic platform 103, the mobile bottom beam 105 is arranged on the lower front side of the fixed platform 101, the tail end of the mobile cylinder 106 is fixed to the right side beam at the bottom of the fixed platform 101, and the rod end is connected to the mobile platform 102, the telescopic cylinder 107 is arranged on the side of the mobile bottom beam 105 close to the telescopic platform 103, the front side of the platform cross beam 108 is installed with an anti-collision rubber cylinder 113, and the rear side is hinged to the front cross beam of the telescopic platform 103, so that during the telescopic process, the angle of the platform cross beam 108 can be fine-tuned to meet the angle adjustment with the aircraft cabin door, and the mobile platform 102 is driven to move left and right by the telescopic action of the mobile cylinder 106, so that the inner and outer sleeves of the mobile platform 102 can be driven to move, so as to ensure that the thickness of the platform structure frame is reduced and sufficient bearing capacity is guaranteed at the same time.

[0025] Secondly, a channel steel rail 109 is provided at the bottom of the fixed platform 101 as a reinforcing crossbeam, and a supporting roller 111 is provided at the tail end crossbeam of the mobile platform 102. The supporting roller 111 contacts the inside of the channel steel rail 109 to support the mobile platform 102 in the vertical direction.

[0026] Again, limiting rollers 110 are fixed at both ends of the tail of the mobile platform 102 to prevent the mobile platform 102 from moving backward. The limiting rollers 110 are also arranged behind the middle beam of the mobile platform 102 and contact the rear side of the middle beam of the fixed platform 101 to achieve the purpose of limiting forward in the horizontal direction.

[0027] At the same time, the middle beam of the mobile platform 102 is welded with high-strength seamless rectangular tubes to reduce the frame thickness of the mobile platform 102. The mobile bottom beam 105 and the bottom side beams of the fixed platform 101 are fixed by bolting. A long wear-resistant nylon plate 112 is laid on the upper part of the mobile bottom beam 105. The middle beam of the mobile platform 102 is sleeved on the outer side of the mobile bottom beam 105 of the fixed platform 101. After the mobile platform 102 is installed, the inner bottom of the middle beam of the mobile platform 102 is in contact with the upper surface of the nylon plate on the mobile bottom beam 105, which provides vertical support for the middle part of the mobile platform 102.

[0028] In addition, the fixed platform 101 is configured with 4 groups of movable rollers 114, and the movable rollers 114 are limited in the front slide rail groove of the fixed platform 101. Personnel anti-fall guardrails 115 are set on both sides of the fixed platform 101, and a telescopic folding guardrail 116 is set in the front. The telescopic folding guardrail 116 moves with the movable platform 102 to ensure full-stroke protection. By configuring 4 groups of movable rollers 114 on the fixed platform 101, the fixed platform 101 can only slide up and down, so that the entire working platform can only move up and down as a whole.

[0029] In addition, the movable platform 102 is paved with a patterned aluminum plate, and the patterned aluminum plate is flush with the bottom plate of the fixed platform 101 .

[0030] Finally, the front part of the middle beam of the mobile platform 102 is welded with left and right opposite first bearing guides, the left and right extension components 104 respectively have single-sided rollers built into the first bearing guides, and the rollers on the back of the extension components 104 are built into the second bearing guides of the telescopic platform 103. By welding left and right opposite first bearing guides on the front part of the middle beam of the mobile platform 102, the left and right extension components 104 respectively have single-sided rollers built into the first bearing guides, and the C-shaped structure is adopted, so as to prevent the mobile platform 102 from sliding out from the side, and the rollers on the back of the extension components 104 are built into the second bearing guides of the telescopic platform 103 (the telescopic platform 103 The second bearing guides in the frame structure are both externally arranged with the C openings on both sides facing outwards, and the rollers on both sides of the extension component 104 are built into the first bearing guides and the second bearing guides of the mobile platform 102 and the telescopic platform 103, so that they can act as a transition extension support between the mobile platform 102 and the telescopic platform 103 to ensure the large stroke displacement of the telescopic platform 103. When the telescopic cylinder 107 is retracted, it will drive the telescopic platform 103 to retract, and the extension component 104 will follow the telescopic platform 103 to retract, and be sandwiched between the first bearing guides and the second bearing guides of the mobile platform 102 and the telescopic platform 103 to maintain a smaller structural space.

[0031] When using a short-mounted, low-thick, long-stroke telescopic platform of this embodiment, when the food truck is in a driving state, the fixed platform 101 is lowered to the lowest position and does not interfere with the top of the cab. The rear lower space of the fixed platform 101 just covers the top of the cab, and the bottom position of the mobile platform 102 (directly below the mobile bottom beam 105) is the lowest position of the platform. It is designed in the front of the top shell of the cab, on the top of the windshield, avoiding the top shell of the cab, so as to ensure a better minimum working height of the platform. In addition, the fixed platform 101 is designed to be shorter, with a smaller forward extension, a smaller vehicle length, a smaller channel circle diameter, and a strong passing capacity. When the car body is raised, the fixed platform 101 follows the car body to rise to the operating height, the operator aligns the front end of the telescopic platform 103 with the aircraft food service door, and operates the mobile oil cylinder 106 to extend and retract, so that the mobile oil cylinder 106 pushes the mobile platform 102 to move left and right, and the mobile platform 102 is limited on the mobile bottom beam 105. Guide action. The limiting rollers 110 at both ends of the rear of the mobile platform 102 are limited and guided in the channel steel guide rails 109 of the fixed platform 101, and the front and rear guide rails jointly support the mobile platform 102 to only move left and right and carry and transport heavy objects. When the telescopic cylinder 107 is operated to extend, the telescopic platform 103 follows and extends forward. The moving rollers 114 on both sides of the left and right extension components are limited in the bearing guide rails of the mobile platform 102 and the telescopic platform 103, supporting the telescopic platform 103 to telescope with a large stroke until it approaches the aircraft food service door. At this time, the front rubber cylinder of the platform crossbeam 108 can prevent hard contact with the aircraft surface and play a buffering role. The platform crossbeam 108 can freely adjust the angle to meet the gap angle between the telescopic platform 103 and the aircraft cabin door and reduce the gap. When the docking is completed, the personnel anti-fall guardrail 115 is opened and fixed in the pin of the mobile platform 102. The telescopic folding guardrail 116 extends and follows the length of the telescopic platform 103 to achieve full-position protection.

[0032] Through the coordinated use of the fixed platform 101, the mobile platform 102, the telescopic platform 103, the extension component 104, the mobile bottom beam 105, the mobile cylinder 106, the telescopic cylinder 107 and the platform cross beam 108, the operating function requirements of the working platform for left and right, front and back movement can be met, and at the same time, it can meet the requirements of carrying larger heavy objects. In addition, it can meet the requirements of lower platform height and larger operating stroke, and can also meet the requirements of lower front and back telescopic movement and better turning passability, and better serve the high performance requirements of the whole vehicle, which solves the technical problems that the existing food truck compartment platform cannot realize the requirements of left and right, front and back operating functions, and cannot meet the requirements of carrying larger heavy objects.

[0033] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A short-mounted, low-thickness, long-travel telescopic platform, characterized in that: It includes a fixed platform, a mobile platform, a telescopic platform, an extension component, a mobile bottom beam, a mobile cylinder, a telescopic cylinder and a platform cross beam. The mobile platform is arranged at the bottom of the fixed platform, the telescopic platform is arranged in the mobile platform frame, the extension component is arranged outside the telescopic platform, the mobile bottom beam is arranged at the lower front side of the fixed platform, the tail end of the mobile cylinder is fixed to the right side beam at the bottom of the fixed platform, and the rod end is connected to the mobile platform. The telescopic cylinder is arranged on the side of the mobile bottom beam close to the telescopic platform, an anti-collision rubber cylinder is installed on the front side of the platform cross beam, and the rear side is hinged to the front cross beam of the telescopic platform.

2. The short-mounted, low-thickness, long-travel telescopic platform according to claim 1, characterized in that: A channel steel guide rail is provided at the bottom of the fixed platform as a reinforcing crossbeam.

3. The short-mounted, low-thickness, long-travel telescopic platform according to claim 2, characterized in that: A supporting roller is arranged at the rear end cross beam of the mobile platform, and the supporting roller contacts the inside of the channel steel guide rail to support the mobile platform in a vertical direction.

4. The short-mounted, low-thickness, long-travel telescopic platform according to claim 1, characterized in that: Limiting rollers are fixed at both ends of the tail of the mobile platform to prevent the mobile platform from moving backwards. The limiting rollers are also arranged behind the middle beam of the mobile platform and contact the rear side of the middle beam of the fixed platform to achieve the purpose of limiting forward in the horizontal direction.

5. The short-mounted, low-thickness, long-travel telescopic platform according to claim 1, characterized in that: The middle beam of the mobile platform is internally welded with high-strength seamless rectangular tubes to reduce the frame thickness of the mobile platform.

6. The short-mounted, low-profile, long-travel telescopic platform according to claim 5, characterized in that: The movable bottom beam and the bottom side beams of the fixed platform are fixed by bolting, and a long wear-resistant nylon plate is laid on the upper part of the movable bottom beam.

7. The short-mounted, low-profile, long-travel telescopic platform according to claim 6, characterized in that: The middle beam of the mobile platform is sleeved on the outer side of the mobile bottom beam of the fixed platform. After the mobile platform is installed, the inner bottom of the middle beam of the mobile platform contacts the upper surface of the wear-resistant nylon plate on the mobile bottom beam, providing vertical support for the middle of the mobile platform.

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