A protective device for a hydraulic lifting platform

Abstract

This utility model relates to the field of hydraulic lifting platform technology, specifically a safety device for a hydraulic lifting platform. It includes a mobile vehicle body, a lifting frame mounted on the top of the mobile vehicle body, a lifting platform mounted on the upper end of the lifting frame, a guardrail fixedly installed on the side of the top of the lifting platform, and a door panel hinged to one side of the guardrail. This safety device for a hydraulic lifting platform, through the coordinated use of the mobile vehicle body, lifting frame, lifting platform, guardrail, door panel, automatic telescopic rod, electric telescopic rod, shield, opening, safety net, servo motor, threaded rod, track, fixed plate, and adjusting block, provides convenience and safety for workers performing high-altitude maintenance operations. After workers board the lifting platform, the guardrail and door panel form a protective barrier to prevent falls from height. The height and lateral position of the shield are flexibly adjustable, with the height adjustment accommodating personnel of different heights.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic lifting platform technology, specifically a protective device for hydraulic lifting platforms. Background Technology

[0002] A hydraulic lifting platform is a type of lifting machinery used for vertically transporting people or goods. It also refers to equipment used for vertical transport in logistics systems such as factories and automated warehouses. The lifting platform is often equipped with various horizontal conveying devices as connecting devices for conveyor lines at different heights. It is generally hydraulically driven, hence the name hydraulic lifting platform.

[0003] Chinese Patent No. CN220432214U discloses a hydraulic lifting platform that increases the friction between the personnel or goods carried on the lifting platform and the lifting platform through an anti-slip device, and switches states according to different construction environments, thereby improving the adaptability and practicality of the device; it includes a base plate, traveling wheels, lifting frame, first hydraulic cylinder and lifting platform; and includes a positioning device, protective device, connecting device, auxiliary device and anti-slip device.

[0004] Regarding the aforementioned technologies, this device has some shortcomings. In actual use, the lifting platform only takes measures to prevent slippage, while no protective structures are installed on its sides and top. This poses a high safety risk to workers when they are working on the lifting platform, which is extremely unsafe. Therefore, it is necessary to provide a protective device for hydraulic lifting platforms to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a protective device for a hydraulic lifting platform to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A safety device for a hydraulic lifting platform, comprising:

[0008] The mobile vehicle body has a lifting frame on its top, a lifting platform at the upper end of the lifting frame, a guardrail fixedly installed on the side of the top of the lifting platform, a door panel hinged to one side of the guardrail, a latch between the door panel and the guardrail, and a track fixedly installed on the back of the lifting platform, with a threaded rod rotatably installed inside the track.

[0009] An adjusting block is fitted on the outer wall of the threaded rod, and the adjusting block is slidably installed on the track. A fixing plate is fixedly installed on the top of the adjusting block, and an electric telescopic rod is fixedly installed on the top of the fixing plate. A limit plate is fixedly installed on the drive end of the electric telescopic rod, and a shielding plate is provided on the top of the limit plate.

[0010] A servo motor is fixedly installed at one end of the track, and the drive end of the servo motor passes through the track and extends into the interior of the track, where it is fixedly connected to one end of the threaded rod.

[0011] Preferably, a positioning box is fixedly installed on the top of the limiting plate, and an insertion hole adapted to the positioning box is opened on the rear side of the top of the baffle plate. The baffle plate is slidably inserted into the outer wall of the positioning box through the insertion hole. Positioning blocks are slidably inserted into both ends of the positioning box. A spring is fixedly installed between the two positioning blocks at one end inside the positioning box. A through groove is opened on the top of the positioning box. An operating rod is fixedly installed on the top of the opposite ends of the two positioning blocks. The positioning box passes through the through groove and extends to the top of the positioning box.

[0012] Preferably, the top of the shield is provided with an opening, and a protective net is fixedly installed inside the opening.

[0013] Preferably, the top of the fixing plate is fixedly installed with automatic telescopic rods on both sides of the electric telescopic rod, and the telescopic end of the automatic telescopic rod is fixedly connected to the bottom of the limiting plate.

[0014] Preferably, a toolbox is fixedly installed on the inner surface of the guardrail, and several partitions are fixedly installed inside the toolbox.

[0015] Preferably, an auxiliary ladder is fixedly installed on one side of the mobile vehicle body, and an anti-slip mat is adhered to the top of the lifting platform.

[0016] Preferably, the adjusting block has a threaded hole that matches the threaded rod, and the adjusting block is threadedly connected to the threaded rod through the threaded hole.

[0017] Preferably, the distance from the bottom of the positioning block to the top of the limiting plate is adapted to the thickness of the baffle plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, through the coordinated use of a mobile vehicle, lifting frame, lifting platform, guardrail, door panel, automatic telescopic rod, electric telescopic rod, shield, opening, safety net, servo motor, threaded rod, track, fixing plate, and adjusting block, brings numerous conveniences and safety guarantees to workers performing high-altitude maintenance operations. After workers board the lifting platform, the guardrail and door panel form a protective barrier to prevent falls from height. The height and lateral position of the shield are flexibly adjustable. The height adjustment can accommodate personnel of different heights, and the lateral adjustment can provide flexible protection based on the position of the personnel on the platform, and can also be moved to the side to avoid interference when repairing the upper building. Its flexible application provides reliable protection for workers, does not obstruct the maintenance work on the upper building, effectively improves the safety and efficiency of maintenance work, and is highly practical.

[0020] 2. This utility model utilizes the coordinated use of positioning blocks, operating rods, positioning boxes, through slots, springs, limiting plates, and insertion holes. The detachable design of the shielding plate makes replacement simple and convenient; workers can disassemble and assemble it by hand while standing on the ground, without the need for tools. This allows for rapid repair and replacement of the shielding plate and protective netting, reducing maintenance time and costs, ensuring the device can quickly restore its normal protective function, and guaranteeing safe and efficient use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a top view of the lifting platform in this utility model.

[0023] Figure 3 This is a cross-sectional structural diagram of the track of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the shielding plate in this utility model;

[0025] Figure 5 This is a cross-sectional view of the positioning box in this utility model.

[0026] In the diagram: 1. Mobile vehicle body; 2. Lifting frame; 3. Lifting platform; 4. Guardrail; 5. Door panel; 6. Auxiliary ladder; 7. Toolbox; 8. Divider; 9. Automatic telescopic rod; 10. Electric telescopic rod; 11. Cover plate; 12. Positioning block; 13. Operating lever; 14. Positioning box; 15. Through slot; 16. Opening; 17. Protective net; 18. Servo motor; 19. Threaded rod; 20. Track; 21. Fixing plate; 22. Adjusting block; 23. Spring; 24. Limiting plate; 25. Insertion hole. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-5 One embodiment provided by this utility model:

[0032] A safety device for a hydraulic lifting platform, comprising:

[0033] The mobile vehicle body 1 has a lifting frame 2 on its top and a lifting platform 3 on its upper end. A guardrail 4 is fixedly installed on the side of the top of the lifting platform 3. A door panel 5 is hinged to one side of the guardrail 4. A latch is provided between the door panel 5 and the guardrail 4. A track 20 is fixedly installed on the back of the lifting platform 3. A threaded rod 19 is rotatably installed inside the track 20.

[0034] An adjusting block 22 is fitted on the outer wall of the threaded rod 19, and the adjusting block 22 is slidably installed on the track 20. A fixing plate 21 is fixedly installed on the top of the adjusting block 22, and an electric telescopic rod 10 is fixedly installed on the top of the fixing plate 21. A limit plate 24 is fixedly installed on the drive end of the electric telescopic rod 10, and a baffle plate 11 is provided on the top of the limit plate 24.

[0035] A servo motor 18 is fixedly installed at one end of the track 20, and the drive end of the servo motor 18 passes through the track 20 and extends into the interior of the track 20 to be fixedly connected to one end of the threaded rod 19.

[0036] A positioning box 14 is fixedly installed on the top of the limiting plate 24. A socket 25 adapted to the positioning box 14 is opened on the rear side of the top of the baffle plate 11. The baffle plate 11 is slidably inserted into the outer wall of the positioning box 14 through the socket 25. Positioning blocks 12 are slidably inserted into both ends of the positioning box 14. A spring 23 is fixedly installed between the two positioning blocks 12 located at one end inside the positioning box 14. A through groove 15 is opened on the top of the positioning box 14. An operating rod 13 is fixedly installed on the top of the two positioning blocks 12 at opposite ends. The positioning box 14 passes through the through groove 15 and extends to the top of the positioning box 14.

[0037] In one embodiment, the top of the shield 11 has an opening 16, and a protective net 17 is fixedly installed inside the opening 16, which effectively reduces the overall weight of the shield 11 and reduces the structural load. On the other hand, the protective net 17 can maintain the original protective function of the shield 11 and avoid risks such as falling foreign objects. The weight reduction helps to optimize the mechanical properties of the shield 11, making it more stable and reliable in actual use.

[0038] In one preferred embodiment, an automatic telescopic rod 9 is fixedly installed on both sides of the electric telescopic rod 10 at the top of the fixed plate 21, and the telescopic end of the automatic telescopic rod 9 is fixedly connected to the bottom of the limiting plate 24 to enhance the lifting stability of the limiting plate 24. It works in coordination with the electric telescopic rod 10 to accurately control the position of the limiting plate 24 and ensure the adjustment effect of the shielding plate 11.

[0039] In one embodiment, a toolbox 7 is fixedly installed on the inner surface of the guardrail 4. Several partitions 8 are fixedly installed inside the toolbox 7. The toolbox 7 is convenient for storing work tools. The partitions 8 can divide the inside of the toolbox 7 into multiple areas, making it convenient to classify and store tools, and making the use of tools more orderly and efficient.

[0040] In one preferred embodiment, an auxiliary ladder 6 is fixedly installed on one side of the mobile vehicle body 1, and an anti-slip mat is attached to the top of the lifting platform 3. The auxiliary ladder 6 facilitates workers to climb onto the lifting platform 3, and the anti-slip mat can increase friction to prevent workers from slipping on the top of the lifting platform 3 and ensure work safety.

[0041] In one embodiment, the adjusting block 22 has a threaded hole that matches the threaded rod 19, and the adjusting block 22 is threadedly connected to the threaded rod 19 through the threaded hole, so as to realize the effective conversion between the rotation of the threaded rod 19 and the lateral movement of the adjusting block 22, so that the adjusting block 22 can move stably along the track 20 and accurately adjust the position of the baffle plate 11.

[0042] In one preferred embodiment, the distance from the bottom of the positioning block 12 to the top of the limiting plate 24 is adapted to the thickness of the shielding plate 11, ensuring that the shielding plate 11 can be securely installed between the positioning block 12 and the limiting plate 24, thus ensuring the stability and reliability of the protective structure.

[0043] The working principle of this utility model is as follows: All electrical components mentioned herein are electrically connected to the power supply on the main controller and the mobile vehicle 1. The main controller can be a conventional, known device such as a computer for control, and existing publicly available power connection technologies are not detailed here. Parts not mentioned in this device are the same as or can be implemented using existing technologies. In use, the worker opens the door panel 5 and climbs to the top of the lifting platform 3 using the auxiliary ladder 6. Then, the worker operates the lifting frame 2 to drive the lifting platform 3 to lift and lower until reaching the designated maintenance position, at which point maintenance work can begin. During maintenance, the guardrail 4 and door panel 5 form a protective barrier around the worker, effectively preventing falls from height. Simultaneously, based on their standing position at the top of the lifting platform 3, the worker first activates the electric telescopic rod 10. Its drive end moves the limiting plate 24 vertically. With the cooperation of the positioning box 14, the limiting plate 24 moves the shielding plate 11 vertically until its height exceeds the worker's height. Next, the servo motor 18 is started, and its drive end drives the threaded rod 19 to rotate. Utilizing the threaded transmission between the threaded rod 19 and the adjusting block 22, and the sliding engagement between the adjusting block 22 and the track 20, the adjusting block 22 moves stably laterally along the track 20. This movement of the adjusting block 22 drives the electric telescopic rod 10, which in turn moves the shield 11 via the limiting plate 24 and the positioning box 14, positioning the shield 11 above the workers' heads to provide protection above their work area. Furthermore, the height of the shield 11 is adjustable to accommodate workers of different heights. Regarding lateral position adjustment, on the one hand, it allows for flexible adjustment of the shield 11 according to the different positions of the workers on the lifting platform 3, achieving effective protection; on the other hand, when maintenance of the upper structure is required, the shield 11 can be moved to the side to avoid interfering with the maintenance work. The flexible use of the shield 11 provides reliable protection for workers without obstructing maintenance work on the upper structure.

[0044] The shield 11 is mainly used to protect against falling objects. If the protective net 17 on the shield 11 is damaged, it must be replaced immediately. When replacing the shield 11, ensure the device is in an unused state. At this time, the shield 11 is lowered to its lowest position using the electric telescopic rod 10, and the lifting platform 3 is also at its lowest position. The operator stands on the ground and directly operates the two operating levers 13 on the positioning box 14, pulling them to move them relative to each other. The operating levers 13 move the two positioning blocks 12 into the positioning box 14 and compress the spring 23. Once the positioning blocks 12 are inside the positioning box 14, their limiting effect on the top of the shield 11 is released. At this point, the shield 11 is pulled upwards, causing the positioning box 14 to disengage from the insertion hole 25 on the shield 11, thus completing the disassembly of the shield 11. After the maintenance and replacement of the shield 11 and the protective net 17 are completed, the same operation method is used to put the positioning block 12 into the positioning box 14. Then, the shield 11 is snapped onto the outer wall of the positioning box 14 through the insertion hole 25. The positioning block 12 will be reset and limited to the top of the shield 11 under the elastic action of the spring 23, so that the shield 11 is firmly fixed to the outer wall of the positioning box 14 and located between the positioning block 12 and the limiting plate 24.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A guard for a hydraulic lift platform, characterized in that, It includes: A mobile vehicle body (1) is provided with a lifting frame (2) on the top of the mobile vehicle body (1). A lifting platform (3) is provided at the upper end of the lifting frame (2). A guardrail (4) is fixedly installed on the side of the top of the lifting platform (3). A door panel (5) is hinged to one side of the guardrail (4). A latch is provided between the door panel (5) and the guardrail (4). A track (20) is fixedly installed on the back of the lifting platform (3). A threaded rod (19) is rotatably installed inside the track (20). An adjusting block (22) is sleeved on the outer wall of the threaded rod (19), and the adjusting block (22) is slidably installed on the track (20). A fixing plate (21) is fixedly installed on the top of the adjusting block (22), and an electric telescopic rod (10) is fixedly installed on the top of the fixing plate (21). A limit plate (24) is fixedly installed on the driving end of the electric telescopic rod (10), and a baffle plate (11) is provided on the top of the limit plate (24). A servo motor (18) is fixedly installed at one end of the track (20), and the drive end of the servo motor (18) passes through the track (20) and extends into the interior of the track (20) to be fixedly connected to one end of the threaded rod (19).

2. A guard for a hydraulic lifting platform as claimed in claim 1, wherein: A positioning box (14) is fixedly installed on the top of the limiting plate (24). A socket (25) adapted to the positioning box (14) is opened on the rear side of the top of the shielding plate (11). The shielding plate (11) is slidably inserted into the outer wall of the positioning box (14) through the socket (25). Positioning blocks (12) are slidably inserted into both ends of the positioning box (14). A spring (23) is fixedly installed between the two positioning blocks (12) located inside the positioning box (14). A through groove (15) is opened on the top of the positioning box (14). An operating rod (13) is fixedly installed on the top of the opposite ends of the two positioning blocks (12). The positioning box (14) passes through the through groove (15) and extends to the top of the positioning box (14).

3. The guard for a hydraulic lift platform of claim 1, wherein: The top of the shield (11) has an opening (16), and a protective net (17) is fixedly installed inside the opening (16).

4. The guard for a hydraulic lift platform of claim 1, wherein: The top of the fixed plate (21) is fixedly installed with automatic telescopic rods (9) on both sides of the electric telescopic rod (10), and the telescopic end of the automatic telescopic rod (9) is fixedly connected to the bottom of the limiting plate (24).

5. The guard for a hydraulic lift platform of claim 1, wherein: A toolbox (7) is fixedly installed on the inner surface of the guardrail (4), and several partitions (8) are fixedly installed inside the toolbox (7).

6. The guard for a hydraulic lift platform of claim 1, wherein: An auxiliary ladder (6) is fixedly installed on one side of the mobile vehicle body (1), and an anti-slip mat is adhered to the top of the lifting platform (3).

7. The guard for a hydraulic lift platform of claim 1, wherein: The adjusting block (22) has a threaded hole that matches the threaded rod (19), and the adjusting block (22) is threadedly connected to the threaded rod (19) through the threaded hole.

8. The guard for a hydraulic lift platform of claim 2, wherein: The distance from the bottom of the positioning block (12) to the top of the limiting plate (24) is adapted to the thickness of the shielding plate (11).

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