Self-propelled aerial work platform

Abstract

This utility model provides a self-propelled lifting platform, comprising four columns. Each column has a top frame, an outwardly extending U-shaped support platform at the bottom, and a connecting frame in the middle. The connecting frame has a working opening and an upper / lower opening at its upper and lower ends, respectively. Multiple slide rails are located inside the four columns between the top frame and the U-shaped support platform, and the platform body slides on these rails. The top of the U-shaped support platform has a lifting traction component for controlling the lifting of the platform body, and the bottom has a self-driving walking mechanism. By setting a connecting frame between the four columns and forming working and upper / lower openings at the top and bottom of the connecting frame, combined with the opening structure of the U-shaped support platform, the platform body can be easily accessed and operated by equipment and personnel through the upper and lower openings when lowered to the ground. This effectively solves the problem of existing scissor lift platforms still having a certain height after being fully lowered, causing inconvenience in loading and unloading equipment.

Description

Technical Field

[0001] This utility model relates to the field of aerial work platforms, and in particular to a self-propelled lifting work platform. Background Technology

[0002] Lifting welding work platforms are important auxiliary equipment widely used in industrial manufacturing, construction, and equipment maintenance. They primarily provide operators with a safe and stable high-altitude working environment while facilitating the carrying and use of various welding equipment and other construction tools. Currently, most lifting work platforms on the market adopt a scissor-lift structure design, which has advantages such as structural stability, high load-bearing capacity, and smooth lifting, thus finding widespread application in many scenarios.

[0003] However, existing scissor lift platforms still have a certain height even when fully lowered, which affects the ease of use of the equipment. Specifically, when the platform is lowered to its lowest position, there is still a gap between its bottom and the ground, making it difficult to push or move welding equipment or other heavy construction equipment onto the platform. This design flaw not only increases the workload of manual handling but may also lead to reduced work efficiency and even safety hazards. Therefore, a self-propelled lifting platform is proposed to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a self-propelled lifting work platform to solve the problem that existing scissor lift work platforms still have a certain height when fully lowered, making it difficult for welding equipment or other heavy construction equipment to be pushed or moved onto the platform smoothly.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a self-propelled lifting work platform, including four columns, a top frame at the top of the four columns, an outwardly extending U-shaped support platform at the bottom, and a connecting frame in the middle that is interconnected. The upper and lower ends of the connecting frame form a working opening and an upper and lower opening, respectively. Multiple slide rails located inside the four columns are provided between the top frame and the U-shaped support platform. The platform body is slidably mounted on the slide rails. The top of the U-shaped support platform is provided with a lifting traction component for controlling the lifting of the platform body, and the bottom is provided with a self-driven walking mechanism.

[0006] In the preferred embodiment, the slide rail includes support seats symmetrically arranged on the inner sides of the top frame and the U-shaped support platform, and a slide rod is provided between the two support seats.

[0007] In the preferred embodiment, the platform body includes a main platform, the top of which is provided with an inverted L-shaped sliding connection part that is slidably fitted onto a slide rod, and the top of the main platform is provided with a guardrail.

[0008] In the preferred embodiment, the bottom of the main work surface is provided with an extension platform that can extend from the work opening;

[0009] The extension platform includes slides symmetrically arranged at the two edges of the bottom of the main platform, with an extension platform slidably arranged between the two slides. The sides of the slides are provided with sliding limit grooves, and the sides of the extension platform are provided with sliding limit wheels that slide in cooperation with the sliding limit grooves.

[0010] When the extended platform is directly below the main platform, the sliding limit wheel is located in the middle of the sliding limit groove;

[0011] The extension table also includes a sliding drive mechanism that controls the extension table surface to extend from the front or rear of the main table surface.

[0012] In a preferred embodiment, the sliding drive mechanism includes symmetrically arranged bearing seats below two slides, with the bearing seats located in the middle of the slides. A rotating shaft is rotatably arranged between the two bearing seats, and a transmission gear is arranged on the rotating shaft. A rack that meshes with the transmission gear is arranged at the bottom of the extended platform. A drive device is arranged at the top of the main platform, and a transmission belt assembly is arranged between the drive device and the end of the rotating shaft.

[0013] In the preferred embodiment, the guardrail includes two fixed guardrails symmetrically arranged at the top edges of the main platform. A movable guardrail is located between the two fixed guardrails at the top of the extended platform. The movable guardrail is fixed to the two edges of the extended platform in the direction of extension and contraction via connecting seats at its bottom. Multiple sliding support rods are provided on the inner side of the fixed guardrails. Sliding sleeve shafts that are slidably fitted onto the outside of the corresponding sliding support rods are provided on the outer side of the movable guardrails. Telescopic grooves corresponding to the extension and contraction direction of the connecting seats are provided on both the front and rear sides of the main platform. An opening and closing door is provided on the side of the movable guardrail located at the opening of the U-shaped support platform.

[0014] In the preferred embodiment, the inverted L-shaped sliding connection includes a vertical plate disposed on the main platform, and a sliding sleeve that is fitted onto the outside of the slide rod is disposed on the top of the vertical plate.

[0015] In the preferred embodiment, a row of pin holes is provided above the slide bar;

[0016] The sliding sleeve has a through hole corresponding to any pin hole, and an electric latch is installed at one end of the through hole so that it can pass through any pin hole.

[0017] In the preferred embodiment, an expansion box is provided at the other end of the through hole to cover it, a photoelectric sensor is provided on the pin of the electric latch, and a receiver corresponding to the photoelectric sensor is provided on the inner wall of the expansion box.

[0018] In the preferred embodiment, the lifting and traction assembly includes two symmetrically arranged lifting and traction units. Each lifting and traction unit includes a winch mounted on a U-shaped support platform. A guide wheel is provided on the top of the top frame. The traction rope on the winch is wound around the guide wheel and connected to the lifting lug on the platform body.

[0019] This utility model provides a self-propelled lifting work platform. By setting a connecting frame between four columns, and forming working openings and upper and lower openings at the top and bottom of the connecting frame respectively, combined with the opening structure design of the U-shaped support platform, the platform body can be conveniently accessed and operated by equipment and personnel through the upper and lower openings when it is lowered to the ground. This effectively solves the problem that existing scissor lift platforms still have a certain height after being fully lowered, which makes it inconvenient to load and unload equipment. At the same time, the lifting traction component set at the bottom of the platform body can realize the stable lifting control of the platform body. Combined with the self-driven walking mechanism, the entire device has good mobility and operational flexibility, and is suitable for rapid deployment and continuous operation in various complex working conditions. In addition, an extension platform that can extend from the working opening is set at the bottom of the main platform, which can expand the high-altitude operation range. It is particularly suitable for welding and construction scenarios with limited space or requiring long-distance operation, significantly improving work efficiency and adaptability. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is a structural diagram of the external frame of this utility model;

[0023] Figure 3 This is a connection structure diagram of the traction device and the main body of the platform of this utility model;

[0024] Figure 4 This is a structural diagram of the main body of the platform of this utility model;

[0025] Figure 5 This is an exploded structural diagram of the main body of the platform of this utility model;

[0026] Figure 6 This is a utility model Figure 6 Another perspective on the structure diagram.

[0027] Figure 7 This is a structural diagram of the connection between the slide rod and the inverted L-shaped sliding connection part of this utility model;

[0028] Figure 8 This is a utility model Figure 7 Partial structural sectional view.

[0029] In the diagram: 1. Column; 2. Top frame; 3. U-shaped support platform; 4. Connecting frame; 5. Working opening; 6. Upper and lower openings; 7. Slide rail; 701. Support base; 702. Slide rod; 703. Pin hole; 8. Platform body; 80. Main platform; 80. Telescopic groove; 801. Inverted L-shaped sliding connection; 81. Vertical plate; 810. Sliding sleeve; 811. Electric pin; 812. Through hole; 813. Extension box; 814. Photoelectric sensor; 815. Receiver; 816. Lifting lug; 82. Extension platform; 83. Slide rail; 830. Extension 831. Platform; 832. Sliding limit groove; 833. Sliding limit wheel; 834. Shaft; 835. Transmission gear; 836. Rack; 837. Drive device; 838. Transmission belt assembly; 839. Guardrail; 84. Fixed guardrail; 840. Movable guardrail; 841. Connecting seat; 842. Sliding support rod; 843. Sliding sleeve shaft; 844. Opening and closing door; 845. Lifting and traction assembly; 901. Winch; 902. Guide wheel; 903. Traction rope; 10. Self-driving walking mechanism. Detailed Implementation

[0030] like Figure 1-7 As shown, a self-propelled lifting work platform includes four columns 1. The top of the four columns 1 is provided with a top frame 2, the bottom is provided with an outwardly extending U-shaped support platform 3, and the middle is provided with a connecting frame 4 that is interconnected. This design can form a stable overall frame structure. At the same time, the upper and lower ends of the connecting frame 4 are respectively formed with a working opening 5 and an upper and lower opening 6. Meanwhile, the opening of the U-shaped support platform 3 allows one side of the upper and lower opening 6 to be unobstructed, which is convenient for equipment and personnel to enter and exit. In addition, the length of the working opening 5 can be set according to the working range to facilitate operation at different heights.

[0031] Multiple slide rails 7 located inside the four columns 1 are provided between the top frame 2 and the U-shaped support platform 3. The platform body 8 is slidably mounted on the slide rails 7. In this embodiment, there are four slide rails 7, which are distributed in pairs on both sides of the platform body 8 to ensure its stability during lifting. The top of the U-shaped support platform 3 is provided with a lifting traction component 9 to control the lifting of the platform body 8, and the bottom is provided with a self-driving walking mechanism 10.

[0032] With this design, the platform body 8 can be lowered to the ground by the lifting and traction component 9, and the equipment and personnel can enter it through the upper and lower openings 6. Then, the lifting and traction component 9 can raise it to the working height for related operations. At the same time, the self-driving walking mechanism 10 can make the whole device move on its own and adjust the working position. It should be noted that the self-driving walking mechanism 10 in this embodiment is a common technology in the field and uses a common commercially available product, so it will not be described in detail here.

[0033] In the preferred embodiment, the slide rail 7 includes support seats 701 symmetrically arranged inside the top frame 2 and the U-shaped support platform 3, and a slide rod 702 is provided between the two support seats 701.

[0034] In the preferred embodiment, the platform body 8 includes a main platform 80. The top of the main platform 80 is provided with an inverted L-shaped sliding connection part 81 that is slidably fitted onto the slide rod 702. The top of the main platform 80 is provided with a guardrail 84, which provides protection against high-altitude conditions. At the same time, the shape of the inverted L-shaped sliding connection part 81 allows the platform body 8 to be placed directly on the ground without being affected by the bottom height of the slide rod 702. It should be noted that the vertical height of the inverted L-shaped sliding connection part 81 is adapted to the height of the bottom end of the slide rod 702 from the ground.

[0035] In order to enable the platform body 8 to increase its working range under height-restricted conditions and to carry out operations outside the range of the platform body 8, an extension platform 83 that can extend from the working port 5 is provided at the bottom of the main platform 80 in this embodiment.

[0036] The extension platform 83 includes slide rails 830 symmetrically arranged at the two edges of the bottom of the main platform 80. The slide rails 830 have an L-shaped cross section. An extension platform 831 is slidably arranged between the two slide rails 830. By sliding the extension platform 831 back and forth between the two slide rails 830, the working area of ​​the main platform 80 is expanded. The side of the slide rails 830 is provided with a sliding limiting groove 832. The side of the extension platform 831 is provided with a sliding limiting wheel 833 that slides in conjunction with the sliding limiting groove 832. By sliding the sliding limiting wheel 833 in the sliding limiting groove 832, its range of motion can be limited.

[0037] It should be noted that, in order to achieve the effect of sliding back and forth, when the extended platform 831 is located directly below the main platform 80, the sliding limit wheel 833 is located in the middle of the sliding limit groove 832.

[0038] The extension table 83 also includes a sliding drive mechanism that controls the extension table 831 to extend from the front or rear side of the main table 80.

[0039] In a preferred embodiment, the sliding drive mechanism includes bearing seats 834 symmetrically arranged below two slide rails 830. The bearing seats 834 are located in the middle of the slide rails 830. A rotating shaft 835 is rotatably arranged between the two bearing seats 834. A transmission gear 836 is arranged on the rotating shaft 835. There are two transmission gears 836. A rack 837 that meshes with the transmission gear 836 is arranged at the bottom of the extended platform 831. A drive device 838 is arranged at the top of the main platform 80. A transmission belt assembly 839 is arranged between the drive device 838 and the end of the rotating shaft 835.

[0040] This design allows the drive unit 838 to drive the rotating shaft 835 to rotate forward or backward via the transmission belt assembly 839. This allows the extension platform 831 to extend forward or backward by utilizing the meshing relationship between the transmission gear 836 and the rack 837. It should be noted that the drive unit 838 is composed of a drive motor and a reducer, and the transmission belt assembly 839 is a synchronous belt and synchronous pulley structure or a chain and sprocket structure.

[0041] To enable the guardrail 84 to accommodate the extension and retraction of the extended platform 831, in a preferred embodiment, the guardrail 84 includes two fixed guardrails 840 symmetrically arranged at the top edges of the main platform 80. A movable guardrail 841 is located between the two fixed guardrails 840 at the top of the extended platform 831. The fixed guardrails 840 are fixed to the top of the main platform 80, while the movable guardrail 841 does not contact the main platform 80. The movable guardrail 841 is fixed to the two edges of the extended platform 831 in the direction of extension and retraction via connecting seats 842 at its bottom. In this embodiment, there are four connecting seats 842, with two on each of the two edges of the extended platform 831, and the connecting seats 842 on both sides are staggered. Multiple sliding support rods 843 are provided on the inner side of the fixed guardrail 840. In this embodiment, there are two sliding support rods 843, which are respectively set on the upper and lower sides of the fixed railing 840. The outer side of the movable railing 841 is provided with a sliding sleeve shaft 844 that is slidably fitted onto the outside of the corresponding sliding support rod 843, so that the movable railing 841 can slide between the two fixed railings 840 as the extension platform 831 extends and retracts. The front and rear sides of the main platform 80 are provided with telescopic grooves 801 corresponding to the extension and retraction direction of the connecting seat 842, so that when the movable railing 841 slides, the connecting seat 842 can slide into the corresponding telescopic groove 801 to avoid unnecessary conflict. The movable railing 841 is provided with an opening and closing door 845 on one side of the opening of the U-shaped support platform 3. The opening and closing door 845 is hinged and is provided with a corresponding door lock.

[0042] In the preferred embodiment, the inverted L-shaped sliding connection part 81 includes a vertical plate 810 disposed on the main platform 80, and a sliding sleeve 811 that is slidably fitted onto the outside of the slide rod 702 is disposed on the top of the vertical plate 810.

[0043] In the preferred embodiment, a row of pin holes 703 is provided above the slide bar 702;

[0044] The sliding sleeve 811 is provided with a through hole 813 corresponding to any pin hole 703. One end of the through hole 813 is equipped with an electric pin 812 that can pass through any pin hole 703. Thus, after reaching the working height, the electric pin 812 can be inserted into the corresponding pin hole 703 to achieve the effect of locking the corresponding height.

[0045] In the preferred embodiment, an expansion box 814 is provided at the other end of the through hole 813 to cover it, a photoelectric sensor 815 is provided on the pin of the electric latch 812, and a receiver 816 corresponding to the photoelectric sensor 815 is provided on the inner wall of the expansion box 814.

[0046] With this design, the photoelectric sensor 815 and the receiver 816 can work together to determine whether the electric latch 812 is aligned with the corresponding pin hole 703.

[0047] In the preferred embodiment, the lifting traction assembly 9 includes two symmetrically arranged lifting traction units. Each lifting traction unit includes a winch 901 mounted on a U-shaped support platform 3. A guide wheel 902 is mounted on the top of the top frame 2. The traction rope 903 on the winch 901 winds around the guide wheel 902 and connects to the lifting lug 82 on the platform body 8. In this embodiment, the lifting lug 82 is specifically mounted on the sliding sleeve 811.

[0048] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A self-propelled aerial work platform, characterized by: It includes four columns (1), with a top frame (2) at the top of the four columns (1), an outwardly extending U-shaped support platform (3) at the bottom, and a connecting frame (4) in the middle. The upper and lower ends of the connecting frame (4) form an operating opening (5) and an upper and lower opening (6), respectively. Multiple slide rails (7) located inside the four columns (1) are provided between the top frame (2) and the U-shaped support platform (3). The platform body (8) is slidably mounted on the slide rails (7). The top of the U-shaped support platform (3) is provided with a lifting traction component (9) that controls the lifting of the platform body (8), and the bottom is provided with a self-driving walking mechanism (10).

2. The self-propelled aerial work platform according to claim 1, characterized in that: The slide rail (7) includes support seats (701) symmetrically arranged inside the top frame (2) and the U-shaped support platform (3), and a slide rod (702) is provided between the two support seats (701).

3. The self-propelled aerial work platform according to claim 2, characterized in that: The platform body (8) includes a main platform (80), the top of the main platform (80) is provided with an inverted L-shaped sliding connection part (81) that is slidably fitted on the slide rod (702), and the top of the main platform (80) is provided with a guardrail (84).

4. The self-propelled aerial work platform according to claim 3, characterized in that: The bottom of the main table (80) is provided with an extension table (83) that can extend from the work port (5). The extension platform (83) includes slides (830) symmetrically arranged at the two edges of the bottom of the main platform (80), an extension platform (831) is slidably arranged between the two slides (830), a sliding limit groove (832) is provided on the side of the slide (830), and a sliding limit wheel (833) is provided on the side of the extension platform (831) to slide in cooperation with the sliding limit groove (832). When the extended platform (831) is directly below the main platform (80), the sliding limit wheel (833) is located in the middle of the sliding limit groove (832); The extension table (83) also includes a sliding drive mechanism that controls the extension table (831) to extend from the front or rear side of the main table (80).

5. The self-propelled aerial work platform according to claim 4, characterized in that: The sliding drive mechanism includes bearing seats (834) symmetrically arranged below two slides (830). The bearing seats (834) are located in the middle of the slides (830). A rotating shaft (835) is rotatably arranged between the two bearing seats (834). A transmission gear (836) is arranged on the rotating shaft (835). A rack (837) that meshes with the transmission gear (836) is arranged at the bottom of the extended platform (831). A drive device (838) is arranged at the top of the main platform (80). A transmission belt assembly (839) is arranged between the drive device (838) and the end of the rotating shaft (835).

6. The aerial work platform of claim 4 or 5, wherein: The guardrail (84) includes two fixed guardrails (840) symmetrically arranged on the top two sides of the main platform (80). The top of the extended platform (831) is provided with a movable guardrail (841) located between the two fixed guardrails (840). The movable guardrail (841) is fixed to the two edges of the extended platform (831) in the telescopic direction by the connecting seat (842) at its bottom. The inner side of the fixed guardrail (840) is provided with multiple sliding support rods (843). The outer side of the movable guardrail (841) is provided with a sliding sleeve shaft (844) that is slidably fitted outside the corresponding sliding support rod (843). The front and rear sides of the main platform (80) are provided with telescopic grooves (801) corresponding to the telescopic direction of the connecting seat (842). The movable guardrail (841) is provided with an opening and closing door (845) on the side of the opening of the U-shaped support platform (3).

7. The self-propelled aerial lift according to claim 6, wherein the rearwardly extending portion is a rearwardly extending portion of the frame. 5 The L-shaped sliding connection (81) includes a vertical plate (810) provided on the main table (80), and a sliding sleeve (811) is provided on the top of the vertical plate (810) and is slidably fitted outside the slide rod (702).

8. The self-propelled aerial work platform according to claim 7, characterized in that: A row of pin holes (703) is provided above the slide bar (702); The sliding sleeve (811) is provided with a through hole (813) corresponding to any pin hole (703), and an electric latch (812) is installed at one end of the through hole (813) so that it can pass through any pin hole (703).

9. The self-propelled aerial lift of claim 8, wherein: An expansion box (814) covering the other end of the through hole (813) is provided. A photoelectric sensor (815) is provided on the pin of the electric latch (812). A receiver (816) corresponding to the photoelectric sensor (815) is provided on the inner wall of the expansion box (814).

10. The self-propelled aerial lift according to claim 1, wherein: The lifting traction assembly (9) includes two symmetrically arranged lifting traction units. The lifting traction unit includes a winch (901) on a U-shaped support platform (3), and a guide wheel (902) on the top of the top frame (2). The traction rope (903) on the winch (901) winds around the guide wheel (902) and connects to the lifting lug (82) on the platform body (8).

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