Self-walking U-shaped hydraulic scissor lifting platform

Abstract

The application discloses a self-walking U-shaped hydraulic scissor lifting platform, which comprises a chassis, a walking assembly, a lifting assembly and a power assembly, the walking assembly is installed above the chassis through the lifting assembly, the power assembly is movably installed below the chassis, the chassis is in a U-shaped structure, the walking assembly comprises a left platform, a right platform and a middle platform, the left platform, the right platform and the middle platform form a U-shaped structure, and the opening direction of the U-shaped structure of the chassis is the same as the opening direction of the U-shaped structure of the walking assembly. The U-shaped chassis and the walking assembly are adopted, the AIS equipment to be overhauled can be surrounded from three sides, the height of the walking assembly is adjusted through the lifting assembly, and two people can work together, so that the number of personnel is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to a self-propelled U-shaped hydraulic scissor lift platform, belonging to the technical field of power maintenance equipment. Background Technology

[0002] Current AIS (Air Insulated Switchgear) equipment relies on air and insulators to insulate live parts from ground and between phases. Busbars are exposed and directly contact the air. Circuit breakers can be porcelain-column type or tank type, using porcelain bushings as the equipment casing and external insulation. Its characteristics include a large external insulation distance and a large footprint. AIS equipment is mostly installed outdoors at a certain height above the ground. When periodic maintenance is required, ladders or scaffolding are often used on-site. Measures must be taken to ensure the stability of the maintenance platform, requiring multiple people to work together, with high safety management requirements, time-consuming and labor-intensive, resulting in low work efficiency.

[0003] The existing lifting platforms mostly have rectangular working areas, which cannot surround the AIS equipment and are inconvenient for maintenance operations; moreover, some lifting platforms are not powered and cannot quickly reach the work area, requiring multiple people to work together.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a self-propelled U-shaped hydraulic scissor lift platform. This invention adopts a U-shaped chassis and walking components, which can surround the AIS equipment being inspected on three sides. At the same time, the height of the walking components can be adjusted by the lifting components, which facilitates two-person collaborative work, thereby reducing the number of personnel and improving work efficiency.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution: This invention discloses a self-propelled U-shaped hydraulic scissor lift platform, which includes a chassis, a traveling assembly, a lifting assembly, and a power assembly. The walking assembly is mounted on top of the chassis via a lifting assembly; the power assembly is movably mounted below the chassis. The chassis has a U-shaped structure; the walking assembly includes a left platform, a right platform, and a middle platform, which together form a U-shaped structure; the opening direction of the U-shaped structure of the chassis is the same as the opening direction of the U-shaped structure of the walking assembly.

[0007] Furthermore, the two top ends of the U-shaped structure on the chassis are respectively provided with rod grooves. The chassis is equipped with a stabilizer bar, one end of which is connected to a bar groove at one end, and the other end of which is connected to a bar groove at another end.

[0008] Furthermore, the chassis is also equipped with multiple hydraulic outriggers on its outer side.

[0009] Furthermore, the power assembly includes a front wheel, a steering drive wheel, a hydraulic brake, and a steering cylinder; The front wheels are mounted on the lower front of the chassis; the front wheels are connected to hydraulic brakes to brake the lifting platform. The steering power wheel is movably mounted on the rear lower part of the chassis via a rotating sleeve; the steering power wheel is connected to the steering cylinder to realize the steering and power supply of the lifting platform.

[0010] Furthermore, the number of steering power wheels is two; a bogie with a span length equal to that of the two steering power wheels is installed between the two steering power wheels; One end of the steering cylinder is hinged to the chassis, and the other end is hinged to the bogie. By controlling the extension and retraction of the steering cylinder, the two steering wheels can be driven to steer.

[0011] Furthermore, the steering power wheel includes a hydraulic motor, a wheel, and a wheel frame. The wheel frame connects the bogie and the rotating sleeve. The hydraulic motor is fixedly mounted on the wheel frame, and the wheel is connected to the rotating shaft of the hydraulic motor.

[0012] Furthermore, the lifting assembly includes two outer supports, two inner supports, and a lifting cylinder; two inner supports are installed between the two outer supports, and a lifting cylinder is installed between the two inner supports. One end of the bottom of the inner support is slidably connected to the opening groove of the chassis, and the other end of the bottom of the inner support is hinged to the chassis; the two ends of the top of the inner support are connected to the walking assembly; by controlling the operation of the lifting cylinder, one end of the bottom of the inner support can be driven to slide in the opening groove, thereby driving the scissor lift of the outer support and the inner support to realize the lifting of the walking assembly.

[0013] Furthermore, a left sleeve is welded to the front side of the left platform, and a right sleeve corresponding to the left sleeve is welded to the front side of the right platform. The left sleeve is provided with an axially movable left shaft; the right sleeve is provided with an axially movable right shaft; by controlling the inward axial movement of the left shaft and / or the right shaft, the stability of the U-shaped structure of the walking assembly is achieved.

[0014] Furthermore, one side of the middle platform is movably connected to the left platform via a ball joint, and the other side of the middle platform is movably connected to the right platform via a telescopic shaft and a self-aligning sliding bearing. The telescopic shaft can slide within the inner hole of the self-aligning sliding bearing to adapt to changes in the angle of the ball joint.

[0015] Furthermore, a bottom anti-collision strip and a lifting ring are installed on the inner side of the U-shaped structure of the chassis; A left anti-collision strip is installed on the inner side of the left platform; a left guardrail is installed on the left platform. A right anti-collision strip is installed on the inner side of the right platform; a right guardrail is installed on the right platform. The inner side of the central platform is equipped with a central anti-collision strip; the central platform is equipped with a central guardrail.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: This invention uses a U-shaped chassis and a walking assembly, which can surround the AIS equipment being inspected on three sides. At the same time, a lifting assembly is used to adjust the height of the walking assembly, which facilitates two-person collaborative work, thereby reducing the number of personnel and improving work efficiency.

[0017] On the one hand, the present invention has a lifting ring and a bottom anti-collision strip welded on the inner side of the chassis to prevent damage to the work platform during the lifting process; on the other hand, the chassis is also equipped with a stabilizing bar to prevent deformation of the U-shaped chassis during the lifting process.

[0018] The chassis of this invention is equipped with multiple sets of hydraulic outriggers on its outer side, which can provide a large support distance and support force, ensuring the stability of the platform during use.

[0019] The walking assembly of the present invention has a platform on one side that is movably connected to the left platform via a ball joint, and on the other side that is movably connected to the right platform via a telescopic shaft and a self-aligning sliding bearing. This can reduce the resistance caused by the asynchrony of the left and right platforms due to manufacturing and installation errors, and make the mechanism run smoothly. Attached Figure Description

[0020] Figure 1 This is a three-dimensional rendering of the present invention; Figure 2 This is a magnified view of a portion of the three-dimensional effect of the present invention; Figure 3 This is the front view of the present invention; Figure 4 This is a cross-sectional view (AA) of the present invention; Figure 5 This is a top view of the present invention; Figure 6 This is a bottom view of the present invention; Figure 7 This is a CC sectional view of the bottom view of the present invention; In the diagram: 1. Chassis; 1a. Lifting ring; 1b. Bottom anti-collision strip; 1c. Hydraulic outrigger; 1d. Rotating sleeve; 1e. Rod groove; 1f. Opening groove; 2. Steering drive wheel; 2a. Hydraulic motor; 2b. Wheel; 2c. Wheel frame; 3. Bogie; 4. Steering cylinder; 5. Left platform; 5a. Left guardrail; 5b. Left anti-collision strip; 5c. Left sleeve; 5d. Left axle; 6. Right platform; 6a. Right guardrail; 6b. Right anti-collision strip; 6c. Right sleeve; 6d. Right axle; 7. Middle platform; 7a. Middle guardrail; 7b. Middle anti-collision strip; 7c. Ball joint; 7d. Self-aligning sliding bearing; 7e. Telescopic shaft; 8. Escalator; 9. Stabilizer bar; 10. External support; 11. Internal support; 12. Lifting cylinder; 13. Front wheel; 13a. Brake; 14. Safety door. Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] This embodiment discloses a self-propelled U-shaped hydraulic scissor lift platform, such as... Figure 1 and Figure 3 As shown, the lifting platform includes a chassis 1, a traveling assembly, a lifting assembly, and a power assembly. The walking assembly is mounted on top of the chassis 1 via a lifting assembly; the power assembly is movably mounted below the chassis 1. The chassis 1 has a U-shaped structure; the walking assembly includes a left platform 5, a right platform 6 and a middle platform 7, which together form a U-shaped structure; the opening direction of the U-shaped structure of the chassis 1 is the same as the opening direction of the U-shaped structure of the walking assembly.

[0023] The technical concept of this invention is as follows: a U-shaped chassis 1 and a walking assembly are used, which can surround the AIS equipment being inspected on three sides. At the same time, a lifting assembly is used to adjust the height of the walking assembly, which facilitates two-person collaborative work, thereby reducing the number of personnel and improving work efficiency.

[0024] like Figure 1 and Figure 4 As shown, the chassis 1 has a U-shaped structure with an opening on three sides. Multiple sets of lifting rings 1a are installed on the inner side of the U-shaped structure. The center of gravity of the lifting platform is located within the area enclosed by the multiple sets of lifting rings 1a, ensuring that the wire rope will not come into contact with the traveling components or other parts when the lifting platform is being lifted. A bottom anti-collision strip 1b is also provided on the inside of the U-shaped structure to protect the equipment being repaired.

[0025] The U-shaped structure on the chassis 1 has rod grooves 1e at its two ends. A stabilizing rod 9 is provided on the chassis 1. One end of the stabilizing rod 9 is connected to the rod groove 1e at one end, and the other end of the stabilizing rod 9 is connected to the rod groove 1e at the other end. When hoisting the equipment, the stabilizing rod 9 is fixed in the stabilizing rod groove 1e with screws to prevent the chassis 1 from deforming due to instability.

[0026] like Figure 3 As shown, the outer side of the chassis 1 is also equipped with multiple hydraulic outriggers 1c. This increases the support distance of the platform, making it more stable during maintenance operations.

[0027] The power assembly includes a front wheel 13, a steering drive wheel 2, a hydraulic brake 13a, and a steering cylinder 4; the front wheel 13 is mounted on the lower front of the chassis 1; as shown Figure 6 As shown, the front wheel 13 is connected to the hydraulic brake 13a to brake the lifting platform; during maintenance, the hydraulic brake 13a is engaged to prevent the platform from shifting due to slope or center of gravity.

[0028] The steering power wheel 2 is movably mounted on the lower rear of the chassis 1 via the rotating sleeve 1d; the steering power wheel 2 is connected to the steering cylinder 4 to realize the steering and power supply of the lifting platform.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, there are two front wheels 13 and two steering wheels 2; the rear of the chassis 1 is provided with two rotating sleeves 1d, which are respectively hinged to the two steering wheels 2.

[0030] A steering power wheel 2 includes a hydraulic motor 2a, a wheel 2b and a wheel frame 2c. The wheel frame 2c is connected to the bogie 3 and the rotating sleeve 1d. The hydraulic motor 2a is fixedly mounted on the wheel frame 2c, and the wheel 2b is connected to the rotating shaft of the hydraulic motor 2a.

[0031] A bogie 3, with a span equal to that of the two steering wheels 2, is installed between them. One end of a steering cylinder 4 is hinged to the chassis 1, and the other end is hinged to the bogie 3. By controlling the extension and retraction of the steering cylinder 4, the two steering wheels 2 can be driven to steer. When the steering cylinder 4 extends or retracts, it drives the two steering wheels 2 to steer via the bogie 3. When the chassis 1 is moving, it is powered by the two rear steering wheels 2.

[0032] Two sets of identical lifting components are also provided between the chassis 1 and the walking assembly. One set of lifting components connects the chassis 1 and the left platform 5, and the other set of lifting components connects the chassis 1 and the right platform 6.

[0033] like Figure 3 , Figure 4 and Figure 7As shown, a lifting assembly includes two outer supports 10, two inner supports 11, and a lifting cylinder 12; two inner supports 11 are installed between the two outer supports 10, and a lifting cylinder 12 is installed between the two inner supports 11. One end of the bottom of the inner support 11 is slidably connected to the opening groove 1f of the chassis 1, and the other end of the bottom of the inner support 11 is hinged to the chassis 1; the two ends of the top of the inner support 11 are connected to the walking component; by controlling the operation of the lifting cylinder 12, one end of the bottom of the inner support 11 can be driven to slide in the opening groove 1f, thereby driving the scissor lift of the outer support 10 and the inner support 11 to realize the lifting of the walking component.

[0034] like Figure 1 As shown, a middle platform 7 connects the left platform 5 and the right platform 6. Safety doors 14 are located at the front ends of both the left platform 5 and the right platform 6; these doors must not be opened during scissor lift operations. When the lifting platform is in a low position, access to either the left platform 5 or the right platform 6 can be achieved via two escalators 8 connected to the U-shaped chassis 1.

[0035] In addition to the connection points between the platforms, a left guardrail 5a is installed on the left platform 5; a right guardrail 6a is installed on the right platform 6; and a middle guardrail 7a is installed on the middle platform 7. The inner left guardrail 5a, right guardrail 6a, or middle guardrail 7a can be raised or lowered within a certain range to facilitate maintenance work. Meanwhile, in the U-shaped area formed by the left platform 5, right platform 6, and middle platform 7, a left anti-collision strip 5b is installed on the inner side of the left platform 5, a right anti-collision strip 6b is installed on the inner side of the right platform 6, and a middle anti-collision strip 7b is installed on the inner side of the middle platform 7 to prevent damage to the maintenance equipment. In this embodiment, the left anti-collision strip 5b, right anti-collision strip 6b, and middle anti-collision strip 7b are made of plastic.

[0036] like Figure 5 As shown, a left sleeve 5c is welded to the front side of the left platform 5, and a right sleeve 6c corresponding to the left sleeve 5c is welded to the front side of the right platform 6; both the left sleeve 5c and the right sleeve 6c are provided with transverse grooves.

[0037] The left sleeve 5c contains an axially movable left shaft 5d; the right sleeve 6c contains an axially movable right shaft 6d; both the left shaft 5d and the right shaft 6d are covered with plastic to protect them, and the end of the left shaft 5d inside the left sleeve 5c is provided with a limiting screw to prevent the left shaft 5d from completely detaching from the left sleeve 5c; the end of the right shaft 6d inside the right sleeve 6c is provided with a limiting screw to prevent the right shaft 6d from completely detaching from the right sleeve 6c; by controlling the inward axial movement of the left shaft 5d and / or the right shaft 6d, the stability of the U-shaped structure of the walking assembly is achieved.

[0038] Specifically, before the lifting assembly begins to rise, the left axis 5d and the right axis 6d are moved inwards towards the U-shaped opening to close it, thus providing a safety precaution during operation and preventing the work platform from tipping over.

[0039] Due to manufacturing and installation errors, the two lifting components may become asynchronous. Direct connection between the left and right platforms 6 and the middle platform 7 could lead to excessive resistance during lifting mechanism operation or even failure of the platform connection points. Figure 3 As shown, one side of the middle platform 7 is movably connected to the left platform 5 via a ball joint 7c, and the other side of the middle platform 7 is movably connected to the right platform 6 via a telescopic shaft 7e and a self-aligning sliding bearing 7d. The telescopic shaft 7e can slide in the inner hole of the self-aligning sliding bearing 7d to adapt to the angle change of the ball joint 7c, thereby avoiding the resistance caused by misalignment between the left platform 5 and the right platform 6 due to manufacturing and assembly errors of the lifting components, so that the mechanism runs smoothly.

[0040] In summary, the present invention has a lifting ring 1a welded to the inside of the U-shaped chassis 1 to prevent damage to the work platform during the lifting process; The stabilizing bar 9, fixed in the U-shaped chassis 1, can prevent possible deformation of the U-shaped chassis 1 during the lifting process; Multiple sets of hydraulic outriggers 1c on the outside of the U-shaped chassis 1 can provide a large support distance and support force, ensuring the stability of the platform during use.

[0041] The outer guardrails of the left platform 5, right platform 6 and middle platform 7 can protect the safety of workers inside the platform, while the inner guardrails can be raised and lowered within a certain range to facilitate maintenance work. When the lifting platform is in operation, the left shaft 5d inside the left sleeve 5c and the right shaft 6d inside the right sleeve 6c cooperate to prevent the platform from tipping over. The plastic anti-collision strip on the inner side of the U-shape can prevent damage to the equipment being repaired.

[0042] One side of the middle platform 7 is movably connected to the left platform 5 via a ball joint 7c, and the other side of the middle platform 7 is movably connected to the right platform 6 via a telescopic shaft 7e and a self-aligning sliding bearing 7d. The telescopic shaft 7e can slide in the inner hole of the self-aligning sliding bearing 7d to adapt to the angle change of the ball joint 7c, thereby avoiding the resistance caused by misalignment between the left platform 5 and the right platform 6 due to manufacturing and assembly errors of the lifting components, so that the mechanism operates smoothly.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A self-propelled U-shaped hydraulic scissor lift platform, characterized in that, The lifting platform includes a chassis (1), a walking assembly, a lifting assembly, and a power assembly. The walking assembly is mounted on top of the chassis (1) via a lifting assembly; the power assembly is movably mounted below the chassis (1); The chassis (1) has a U-shaped structure; the walking assembly includes a left platform (5), a right platform (6) and a middle platform (7), which together form a U-shaped structure; the opening direction of the U-shaped structure of the chassis (1) is the same as the opening direction of the U-shaped structure of the walking assembly; The two top ends of the U-shaped structure on the chassis (1) are respectively provided with rod grooves (1e). The chassis (1) is provided with a stabilizer bar (9), one end of the stabilizer bar (9) is connected to a bar groove (1e) on the top end, and the other end of the stabilizer bar (9) is connected to another bar groove (1e) on the top end. A left sleeve (5c) is welded to the front side of the left platform (5), and a right sleeve (6c) corresponding to the left sleeve (5c) is welded to the front side of the right platform (6). The left sleeve (5c) is provided with an axially movable left shaft (5d); the right sleeve (6c) is provided with an axially movable right shaft (6d); by controlling the inward axial movement of the left shaft (5d) and / or the right shaft (6d), the stability of the U-shaped structure of the walking assembly is achieved. One side of the middle platform (7) is movably connected to the left platform (5) via a ball joint (7c), and the other side of the middle platform (7) is movably connected to the right platform (6) via a telescopic shaft (7e) and a self-aligning sliding bearing (7d). The telescopic shaft (7e) can slide in the inner hole of the self-aligning sliding bearing (7d) to adapt to the angle change of the ball joint (7c).

2. The self-propelled U-shaped hydraulic scissor lift platform according to claim 1, characterized in that, The chassis (1) is also provided with multiple hydraulic outriggers (1c) on its outer side.

3. The self-propelled U-shaped hydraulic scissor lift platform according to claim 1, characterized in that, The power assembly includes a front wheel (13), a steering power wheel (2), a hydraulic brake (13a), and a steering cylinder (4). The front wheel (13) is mounted on the lower front of the chassis (1); the front wheel (13) is connected to a hydraulic brake (13a) to brake the lifting platform; The steering power wheel (2) is movably installed on the rear lower part of the chassis (1) through the rotating sleeve (1d); the steering power wheel (2) is connected to the steering cylinder (4) to realize the steering and power supply of the lifting platform.

4. The self-propelled U-shaped hydraulic scissor lift platform according to claim 3, characterized in that, The number of steering power wheels (2) is two; a bogie (3) with a span length equal to that of the two steering power wheels (2) is installed between the two steering power wheels (2); One end of the steering cylinder (4) is hinged to the chassis (1), and the other end is hinged to the bogie (3). By controlling the extension and retraction of the steering cylinder (4), the two steering power wheels (2) can be driven to turn.

5. The self-propelled U-shaped hydraulic scissor lift platform according to claim 4, characterized in that, The steering power wheel (2) includes a hydraulic motor (2a), a wheel (2b) and a wheel frame (2c). The wheel frame (2c) is connected to the bogie (3) and the rotating sleeve (1d). The hydraulic motor (2a) is fixedly installed on the wheel frame (2c). The wheel (2b) is connected to the rotating shaft of the hydraulic motor (2a).

6. The self-propelled U-shaped hydraulic scissor lift platform according to claim 1, characterized in that, The lifting assembly includes two outer supports (10), two inner supports (11), and a lifting cylinder (12); two inner supports (11) are installed between the two outer supports (10), and a lifting cylinder (12) is installed between the two inner supports (11). One end of the bottom of the inner support (11) is slidably connected to the opening groove (1f) of the chassis (1), and the other end of the bottom of the inner support (11) is hinged to the chassis (1); the two ends of the top of the inner support (11) are connected to the walking assembly; by controlling the operation of the lifting cylinder (12), one end of the bottom of the inner support (11) can be driven to slide in the opening groove (1f), thereby driving the scissor lift of the outer support (10) and the inner support (11) to realize the lifting of the walking assembly.

7. The self-propelled U-shaped hydraulic scissor lift platform according to claim 1, characterized in that, The chassis (1) has a bottom anti-collision strip (1b) and a lifting ring (1a) installed on the inner side of the U-shaped structure. A left anti-collision strip (5b) is installed on the inner side of the left platform (5); a left guardrail (5a) is installed on the left platform (5); A right anti-collision strip (6b) is installed on the inner side of the right platform (6); a right guardrail (6a) is installed on the right platform (6); The inner side of the middle platform (7) is equipped with a middle anti-collision strip (7b); the middle platform (7) is equipped with a middle guardrail (7a).

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