Upper and lower boarding ladder for overhead working truck and overhead working truck

Abstract

The utility model belongs to the technical field of overhead working trucks, and particularly discloses a boarding ladder for getting on and off an overhead working truck and the overhead working truck. The climbing ladder mainly comprises a fixing frame, a turnover ladder and a fixing shaft, the fixing frame comprises a side plate, horizontal supporting rods and inclined supporting rods, one end of each horizontal supporting rod is fixedly connected with the corner position of the side plate, and one inclined supporting rod is arranged above each horizontal supporting rod in the inclined direction; mounting holes are formed in the horizontal supporting rod and the turnover ladder, the fixing shaft penetrates through the mounting holes to achieve connection of the fixing frame and the turnover ladder, the turnover ladder can rotate relative to the fixing frame through the fixing shaft, and a handrail is further arranged on the inclined supporting rod. The climbing ladder can rotate around the fixing shaft relative to the fixing frame through the overturning ladder, the overturning ladder can be stored and folded under the condition that the climbing ladder is not used, the space utilization rate is increased, and meanwhile the safety in the driving process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work vehicles, in particular to an aerial work vehicle getting on and off ladder and an aerial work vehicle. Background Art

[0002] Aerial work platforms require operators to frequently ascend and descend the work platform during use. Large aerial work platforms are typically equipped with a ladder for access, and the design of the ladder needs to be flexible and adaptable to the overall layout of the vehicle, ensuring both ease of access and safety while maintaining the platform both in and out of operation.

[0003] At present, the ladders used for getting on and off aerial work vehicles are generally fixed structures. Although this type of design is simple in structure, it cannot be adjusted, and may greatly reduce space utilization, aesthetics, and convenience during actual use.

[0004] To this end, the utility model provides an aerial work vehicle getting on and off ladder and an aerial work vehicle. Utility Model Content

[0005] The purpose of the utility model is to provide an aerial work vehicle getting on and off ladder and an aerial work vehicle, which can realize the storage and closure of the ladder during driving, thereby improving space utilization and driving safety.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] A step-up ladder for aerial work vehicles, comprising a fixed frame, a tilting ladder and a fixed shaft;

[0008] The fixing frame includes a side panel, a horizontal support rod and an oblique support rod, wherein the side panel is vertically arranged, the horizontal support rod is horizontally arranged, and one end of the horizontal support rod is fixedly connected to the corner position of the side panel, and two horizontal support rods are provided, and the two horizontal support rods are symmetrically arranged about the central axis of the side panel, and an oblique support rod is arranged obliquely above each horizontal support rod, one end of the oblique support rod is fixedly connected to the side panel, and the other end of the oblique support rod is fixedly connected to the other end of the horizontal support rod;

[0009] A first mounting hole is formed at the other end of the horizontal support rod, a second mounting hole is formed at the top of the flip ladder, the fixed shaft passes through the first mounting hole and the second mounting hole, and the flip ladder can rotate relative to the fixed frame around the fixed shaft;

[0010] The oblique support rod is also provided with an armrest.

[0011] Preferably, the tilt ladder comprises two supporting uprights and a plurality of steps, wherein the two supporting uprights are arranged in parallel and symmetrically, the plurality of steps are arranged between the two supporting uprights at equal intervals, and the steps and the supporting uprights are perpendicular to each other;

[0012] A group of bending rods are fixedly connected to the top ends of the two supporting uprights. A second mounting hole is provided on the bending rods. The two bending rods are connected by a fixing plate. Limiting columns are provided at both ends of the top surface of the fixing plate.

[0013] Preferably, both ends of the bottom surface of the fixing plate are provided with a limit assembly, the limit assembly is used to prevent the flip ladder from automatically unfolding due to vibration in the closed state, and the limit assembly includes a U-shaped plate, a stretching rod, a fixing pin and a spring;

[0014] The U-shaped plate is fixedly connected to the bottom surface of the fixed plate, and both ends of the U-shaped plate are provided with through holes, and one end of the stretching rod passes through the through holes in sequence;

[0015] The fixing pin is inserted into the stretching rod, the spring is arranged on the stretching rod, and the spring abuts against the fixing pin.

[0016] Preferably, an anti-slip pad is provided on the pedal, wherein the anti-slip pad is made of rubber material.

[0017] Preferably, two first mounting holes are provided on the horizontal support rod.

[0018] Preferably, the outer contour of the armrest is in an inverted V shape, one end of the bottom of the armrest is connected to the oblique support rod, and the other end of the bottom of the armrest is connected to the horizontal support rod.

[0019] Preferably, baffles are provided between the horizontal support rods.

[0020] Preferably, a reinforcement plate is provided between the oblique support rods.

[0021] The invention discloses an aerial work vehicle, wherein the aerial work vehicle is provided with the above-mentioned aerial work vehicle getting on and off ladder.

[0022] The beneficial effects of the utility model are as follows:

[0023] The utility model provides an aerial work vehicle boarding and disembarking ladder and an aerial work vehicle, wherein the ladder can be rotated relative to a fixed frame around a fixed axis by the ladder being turned over, and can be stored and folded when the ladder is not in use, thereby improving space utilization and improving safety during driving. The ladder of the utility model maintains the stability of the ladder in the unfolded state by adding a limit column, which facilitates workers to get on and off the vehicle and ensures the personal health and safety of the workers. At the same time, by adding a limit component, the ladder can be prevented from automatically unfolding due to vehicle body vibration in the folded state, thereby ensuring safety during driving.

[0024] When the climbing ladder of the utility model is in the unfolded state, the climbing ladder angle is selected and set appropriately, thereby improving the convenience and comfort of workers getting on and off the vehicle while ensuring safety; when the climbing ladder of the utility model is in the folded state, the appearance of the climbing ladder and the aerial vehicle is unified, thereby improving the aesthetics of the whole machine; more importantly, in the folded state, the climbing ladder of the utility model has a greater advantage in space utilization than the traditional climbing ladder. During driving, the climbing ladder occupies less space and has a higher driving safety;

[0025] The utility model has a simple overall structure, an ingenious design, and a low subsequent maintenance cost, and is highly practical and universal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of the utility model's climbing ladder in an unfolded state;

[0027] Figure 2 This is a structural diagram of the utility model ladder in a folded state;

[0028] Figure 3 This is a side view of the utility model ladder in the unfolded state, wherein the arrow indicates the flipping direction;

[0029] Figure 4 This is a front view of the utility model ladder in the unfolded state;

[0030] Figure 5 This is a schematic structural diagram of the fixing frame of the present utility model;

[0031] Figure 6 This is a front view of the flip ladder of the present invention;

[0032] Figure 7 A perspective view of the flip ladder of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the limit assembly of the present utility model;

[0034] Figure 9 This is a schematic structural diagram of the fixed shaft of the present utility model;

[0035] Among them, 1-fixed frame; 11-side plate, 12-horizontal support rod, 121-first mounting hole; 13-oblique support rod, 14-handrail, 15-baffle;

[0036] 2- flip ladder: 21- support pole, 22- pedal, 23- bending rod, 231- second mounting hole; 24- fixing plate, 25- limiting column;

[0037] 26-Limiting assembly: 261-U-shaped plate, 262-stretching rod, 263-fixing pin, 264-spring;

[0038] 3-Fix the axis. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] Combine Figures 1 to 9 As shown, the utility model provides an aerial work vehicle access ladder and an aerial work vehicle. The ladder can rotate relative to the fixed frame 1 around the fixed axis 3 via the tilting ladder 2. When the ladder is not in use, the tilting ladder 2 can be stored and folded, thereby improving space utilization and safety during operation. The utility model ladder mainly includes structural components such as the fixed frame 1, the tilting ladder 2, and the fixed axis 3.

[0042] Combine Figure 1 and Figure 5As shown, the fixing frame 1 includes related structural components such as side panels 11, horizontal support rods 12 and oblique support rods 13, wherein the side panels 11 are arranged vertically, the horizontal support rods 12 are arranged horizontally, and one end of the horizontal support rod 12 is fixedly connected to the corner position of the side panels 11. There are two horizontal support rods 12, which are symmetrically arranged about the central axis of the side panels 11 and are both fixedly connected to the corners of the side panels 11. An oblique support rod 13 is arranged obliquely above each horizontal support rod 12, one end of the oblique support rod 13 is fixedly connected to the side panels 11, and the other end of the oblique support rod 13 is fixedly connected to the other end of the horizontal support rod 12. Combined with Figure 1 and Figure 5 As shown, a stable triangular structure is formed between the oblique support rods 13, the horizontal support rods 12 and the side panels 11, which improves the overall stability of the fixing frame 1. A reinforcement plate is provided between one end of the two oblique support rods 13 to increase the stability of the fixing frame 1.

[0043] Combine Figure 2 and Figure 7 As shown, a first mounting hole 121 is provided at the other end of the horizontal support rod 12, and a second mounting hole 231 is provided at the top of the flip ladder 2. The fixed shaft 3 can pass through the first mounting hole 121 and the second mounting hole 231 to realize the connection between the fixed frame 1 and the flip ladder 2, and the flip ladder 2 can rotate relative to the fixed frame 1 around the fixed shaft 3. During driving, the flip ladder 2 can be stored and closed to reduce space occupancy and improve driving safety.

[0044] Combine Figure 5 As shown, two first mounting holes 121 are provided on the horizontal support rod 12, and two fixing shaft 3 mounting holes of two positioning sizes are reserved in advance, which can allow the flip ladder 2 to be installed inside or outside to adapt to the requirements of different vehicle widths.

[0045] Combine Figure 2 and Figure 5 As shown, a handrail 14 is also provided on the diagonal support rod 13, providing a convenient grip for workers when getting on and off the vehicle or climbing the ladder. The outer contour of the handrail 14 is an inverted V-shape, with one end of the handrail 14 connected to the diagonal support rod 13 and the other end of the handrail 14 connected to the horizontal support rod 12. The handrail 14, the horizontal support rod 12, and the diagonal support rod 13 form a triangular structure, which improves the stability and safety of the worker's grip.

[0046] Combine Figure 6 and Figure 7As shown, the tilt ladder 2 mainly includes two support posts 21 and multiple steps 22. The two support posts 21 are arranged parallel and symmetrically, and the multiple steps 22 are arranged at equal intervals between the two support posts, and the steps 22 are perpendicular to the support posts 21. The steps 22 are provided with anti-slip pads made of rubber material. The addition of the anti-slip pads can increase the friction between the soles of the workers' feet and the steps 22, improving the safety of the workers when getting on and off the vehicle.

[0047] Combine Figure 7 As shown, a set of bending rods 23 are fixedly connected to the top of the two supporting uprights 21. The bending rods 23 are provided with second mounting holes 231. The second mounting holes 231 are used to assemble the fixed frame 1 and the flip ladder 2. The opposite bending rods 23 are connected by a fixing plate 24. The top ends of the fixing plate 24 are provided with limit posts 25, and the limit posts 25 extend out of the ends of the fixing plate 24. Figure 1 、 Figure 3 as well as Figure 4 As shown, when the climbing ladder is in the unfolded state, the reversible ladder 2 rotates to a certain angle around the fixed axis 3 relative to the fixed frame 1, and the limit column 25 contacts the bottom of the horizontal support rod 12, thereby preventing the reversible ladder 2 from continuing to rotate, ensuring the stability of the staff when getting on and off the vehicle. It should also be noted that due to the structural characteristics of the bending rod 23 and the limit column 25, when the climbing ladder is in the unfolded state, the reversible ladder 2 is not perpendicular to the fixed frame 1, that is, the angle between the support column 21 of the reversible ladder 2 and the horizontal support rod 12 of the fixed frame 1 is 100 degrees, as shown in FIG. Figure 3 As shown in the figure, setting a safer and more comfortable climbing angle can improve the convenience and comfort of workers getting on and off the vehicle while ensuring safety.

[0048] Combine Figure 8As shown, both ends of the bottom surface of the fixed plate 24 are provided with limit assemblies 26. The limit assemblies 26 are used to prevent the retractable ladder 2 from automatically expanding due to vibration when in the closed state, thereby ensuring safety during operation. The limit assemblies 26 include structural components such as a U-shaped plate 261, a tension rod 262, a fixing pin 263, and a spring 264. The U-shaped plate 261 is fixedly connected to the bottom surface of the fixed plate 24. Both ends of the U-shaped plate 261 have through holes. The tension rod 262 has an L-shaped structure, and one end of the tension rod 262 extends through the through holes. The fixing pin 263 is inserted into the tension rod 262, and the tension rod 262 is provided with a spring 264 that abuts the fixing pin 263. When the ladder is in the closed state, the spring 264 abuts the fixing pin 263, allowing the end of the tension rod 262 to extend through the through hole and be located between the handrails 14, thereby preventing the retractable ladder 2 from automatically expanding due to vibration during operation. When the ladder needs to be unfolded, the stretching rod 262 is pulled outward, the fixing pin 263 compresses the spring 264 , the stretching rod 262 is separated from the handrail 14 , and the turnover ladder 2 can rotate around the fixed axis 3 .

[0049] Combine Figure 5 As shown, a barrier plate 15 is provided between the horizontal support bars 12 for easy access by workers, facilitating transitions when entering and exiting the vehicle. The present invention also provides an aerial work vehicle equipped with the aforementioned aerial work vehicle access ladder. The ladder's mounting bracket 1 is bolted to the aerial work vehicle's underframe structural beams and serves as the base of the entire ladder.

[0050] Combine Figures 1 to 9 As shown, the present invention provides an aerial work platform access ladder and an aerial work platform. The ladder can be rotated relative to a fixed frame 1 about a fixed axis 3 by a tilting ladder 2. When the ladder is not in use, the tilting ladder 2 can be folded and stored, thereby improving space utilization and enhancing safety during operation. The ladder is provided with a stopper 25 to ensure the stability of the tilting ladder 2 in its unfolded state, facilitating access for workers and ensuring their personal health and safety. Furthermore, the stopper assembly 26 prevents the tilting ladder 2 from automatically unfolding in its folded state due to vibrations during operation, thereby ensuring safety during operation. When the ladder is unfolded, the ladder can be adjusted to a suitable angle, improving the convenience and comfort of workers getting on and off the platform while ensuring safety. When the ladder is folded, the ladder is designed to be uniform in appearance with the aerial work platform cover, enhancing the overall aesthetics of the platform. More importantly, when folded, the ladder is more space-efficient than conventional ladders, occupying less space and providing greater safety during operation. The utility model has a simple overall structure, an ingenious design, and a low subsequent maintenance cost, and is highly practical and universal.

[0051] Of course, the above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. A ladder for getting on and off an aerial work vehicle, characterized in that: It includes a fixed frame, a turning ladder and a fixed shaft; The fixing frame includes a side panel, a horizontal support rod and an oblique support rod, wherein the side panel is vertically arranged, the horizontal support rod is horizontally arranged, and one end of the horizontal support rod is fixedly connected to the corner position of the side panel, and two horizontal support rods are provided, and the two horizontal support rods are symmetrically arranged about the central axis of the side panel, and an oblique support rod is arranged obliquely above each horizontal support rod, one end of the oblique support rod is fixedly connected to the side panel, and the other end of the oblique support rod is fixedly connected to the other end of the horizontal support rod; A first mounting hole is formed at the other end of the horizontal support rod, a second mounting hole is formed at the top of the flip ladder, the fixed shaft passes through the first mounting hole and the second mounting hole, and the flip ladder can rotate relative to the fixed frame around the fixed shaft; The oblique support rod is also provided with an armrest.

2. The aerial work vehicle boarding and disembarking ladder according to claim 1, characterized in that: The tilt ladder comprises two supporting uprights and a plurality of steps, wherein the two supporting uprights are arranged in parallel and symmetrically, the plurality of steps are arranged between the two supporting uprights at equal intervals, and the steps and the supporting uprights are perpendicular to each other; A group of bending rods are fixedly connected to the top ends of the two supporting uprights. A second mounting hole is provided on the bending rods. The two bending rods are connected by a fixing plate. Limiting columns are provided at both ends of the top surface of the fixing plate.

3. The aerial work vehicle boarding and disembarking ladder according to claim 2, characterized in that: Both ends of the bottom surface of the fixed plate are provided with a limit assembly, which is used to prevent the flip ladder from automatically unfolding due to vibration in the closed state. The limit assembly includes a U-shaped plate, a stretching rod, a fixing pin and a spring; The U-shaped plate is fixedly connected to the bottom surface of the fixing plate, and through holes are provided at both ends of the U-shaped plate, and one end of the stretching rod passes through the through holes in sequence; the fixing pin is inserted into the stretching rod, and the spring is provided on the stretching rod, and the spring abuts against the fixing pin.

4. The aerial work vehicle boarding and disembarking ladder according to claim 2, characterized in that: The pedal is provided with an anti-slip pad, wherein the anti-slip pad is made of rubber material.

5. The aerial work vehicle boarding and disembarking ladder according to claim 1, characterized in that: Two first mounting holes are formed on the horizontal support rod.

6. The aerial work vehicle boarding and disembarking ladder according to claim 1, characterized in that: The outer contour of the handrail is in an inverted V shape, one end of the bottom of the handrail is connected to the oblique support rod, and the other end of the bottom of the handrail is connected to the horizontal support rod.

7. The aerial work vehicle boarding and disembarking ladder according to claim 1, characterized in that: Baffles are arranged between the horizontal support rods.

8. The aerial work vehicle boarding and disembarking ladder according to claim 1, characterized in that: Reinforcement plates are provided between the oblique support rods.

9. An aerial work vehicle, characterized in that: The aerial work vehicle is provided with the aerial work vehicle getting on and off ladder according to any one of claims 1 to 8.

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