Automatic turning stair of watering cart

Abstract

The utility model provides an automatic turning stair for a watering cart, which is characterized in that a working platform is arranged at the tail part of a frame of the watering cart, a protective fence is arranged on the working platform, a turning ladder assembly is hinged on the working platform, and a passage convenient for operators to go up and down is reserved between the protective fence and the working platform. The working platform is provided with a driving assembly enabling the turnover ladder assembly to rotate, the driving assembly can drive the turnover ladder assembly to rotate to be matched with the guardrail to achieve closing and opening of the channel, and the turnover ladder assembly can be driven by the driving assembly to rotate to be flush with the guardrail to form an integral protective fence structure with the guardrail. The overturning ladder assembly can be prevented from being exposed out of the vehicle body, certain potential safety hazards are avoided while attractiveness is affected, the effective blocking effect on the side wall of the operation platform is achieved, and the safety of maintenance operation of operators is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rotating staircase equipment, specifically to an automatic rotating staircase for a sprinkler truck. Background Technology

[0002] Water sprinkler trucks, also known as multi-functional greening sprinkler trucks, are used for cleaning roads, sanitation, dust control, watering, and spraying pesticides in urban areas, large factories, military units, and parks to beautify the environment. As important special vehicles in municipal sanitation, fire emergency response, and other fields, operators often need to climb the onboard stairs to the top water tank or equipment platform for maintenance and cleaning.

[0003] Traditional water truck stairs mostly adopt fixed or simple folding structures. These stairs can only enable operators to go up and down, but when folded, they protrude outside the vehicle body, affecting the vehicle's passability. Furthermore, they cannot be linked with other functions of the vehicle when not in operation. As a result, the stairs only serve the function of enabling operators to go up and down the water truck equipment platform. When not in use, they are also exposed on the outside of the water truck, affecting its appearance and having a relatively limited function. Utility Model Content

[0004] In view of this, the present invention provides an automatic tilting ladder for a sprinkler truck. By cooperating the tilting ladder frame with the guardrail on the working platform, it not only does not occupy the external space of the vehicle, but also works with the guardrail to protect and block the working platform, increasing the functionality and safety performance of the tilting ladder frame, and making it safer and more aesthetically pleasing.

[0005] To solve the above-mentioned technical problems, this utility model provides an automatic tilting ladder for a sprinkler truck. A work platform is welded to the rear of the sprinkler truck frame, and a guardrail is welded to the work platform. A tilting ladder is also hinged to the work platform via a hinge shaft. A passageway for operators to access the platform is provided between the guardrail and the work platform. A drive component is provided on the work platform to rotate the tilting ladder. The drive component can drive the tilting ladder to rotate and cooperate with the guardrail to close or open the passageway. This utility model can drive the tilting ladder to rotate until it is flush with the guardrail, forming an integral protective enclosure structure. This not only avoids the tilting ladder being exposed outside the vehicle body, affecting aesthetics and posing certain safety hazards, but also effectively blocks the side walls of the work platform, greatly increasing the safety of operators during maintenance work. Furthermore, the drive component can drive the tilting ladder to rotate and rest it on the ground, making it easier and more convenient for operators to access the work platform, greatly increasing the safety performance and functionality of the protective ladder.

[0006] The work platform is also equipped with two hinge seats, which are located on the side walls of the work platform on both sides of the passage. Each hinge seat is hinged with a flip plate. The hinge shaft passes through the hinge seat and the flip plate. Both ends of the hinge shaft are equipped with retaining rings to prevent the hinge shaft from slipping out of the hinge hole connecting the hinge seat and the flip plate. Each flip plate has a through hole with the axes of the two through holes coinciding. The drive assembly includes a rotating rod inserted between the two through holes. One end of the rotating rod is located on the outside of the flip plate and is equipped with a rotating handle. Turning the rotating handle can rotate the rotating rod around the through hole.

[0007] The operating platform has a limit groove, and the frame of the sprinkler truck has a clearance groove for the rotating handle to pass through. The clearance groove provides suitable clearance space for the rotation of the rotating handle. The other end of the rotating rod is fitted with a protective sleeve, which is made of non-slip and wear-resistant rubber or plastic. The protective sleeve is used to prevent the rotating rod from slipping out of the through hole when it moves along the axial direction under the pulling action of the rotating handle, thus limiting the axial movement of the rotating rod. The rotating handle is located on the side of the limit groove. Pushing or pulling the rotating handle can pull the rotating rod to slide along the axial direction of the through hole. Twisting the rotating handle can rotate the rotating rod until it is locked into the limit groove.

[0008] A baffle is installed on the outside of the rotating rod. The baffle is located inside the tilting ladder frame and is welded together with the tilting ladder frame. The tilting ladder frame is a frame structure and includes vertical beams and horizontal beams. The horizontal beams and vertical beams are welded together. Anti-slip foot pedals are installed on the horizontal beams. The anti-slip foot pedals are made of plastic material with anti-slip protrusions. The anti-slip foot pedals can greatly increase the safety of workers going up and down the tilting ladder. The inside of the baffle is provided with a slot, and the outside of the rotating rod is provided with a locking strip that matches the slot.

[0009] The guardrail is also equipped with a protective panel on its side wall, which has multiple ventilation holes.

[0010] The diameter of the rotating handle is larger than the diameter of the rotating shaft. An extension sleeve is fitted on the outside of the rotating handle. The front end of the extension sleeve is a flexible tube, such as a rubber tube or a plastic tube, and the rear end of the extension sleeve is a rigid tube, such as a stainless steel tube. An anti-slip gripping part is also provided on the outside of the extension sleeve. The anti-slip gripping part is made of anti-slip and wear-resistant rubber material.

[0011] Both the guardrail and the flip ladder are equipped with pins. The guardrail is equipped with a latch that matches the pin. The latch is hinged to the pin on the guardrail and can rotate along the pin on the guardrail to engage with the pin on the flip ladder.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. This utility model can hinge the tilting ladder frame to the working platform at the rear of the sprinkler truck frame. When in use, it can be tilted down to facilitate the operation of the sprinkler truck for workers to get on and off. After use, it can be rolled up to form a whole with the guardrail, thus achieving a safety protection function for the working platform. This solves the problem of the traditional tilting ladder frame being exposed outside the vehicle body, affecting the driving safety and overall aesthetics.

[0014] 2. This utility model can enhance the overall strength of the flip ladder frame by fixing the baffle inside the flip ladder frame together with the flip ladder frame. It also makes it easy to achieve the operation of easy and convenient folding and releasing by the snap-fit ​​action of the baffle and the rotating rod, which pushes the baffle and the flip ladder frame to rotate at the same time. The operation is safer and more convenient.

[0015] 3. This utility model can block the gaps in the guardrail and the tilting ladder by using the combination of the baffle and the protective plate, which can prevent tools from falling off the operating platform and injuring passers-by or damaging the tools when workers enter the operating platform for maintenance work, thus reducing safety hazards.

[0016] 4. This utility model can extend the rotating handle by using an extension sleeve, which is more labor-saving and convenient for people of different heights to lower and fold the flip ladder. It is safer and more portable. When not in use, the extension sleeve can be inserted into the rotating handle to reduce the space occupied, making it more aesthetically pleasing.

[0017] 5. This utility model can connect the tilting ladder and the guardrail by using the cooperation of the pins on the tilting ladder and the latches on the guardrail. After the operator enters the work platform and retracts the tilting ladder, and when the vehicle is driving normally, the latches can be rotated into the pins to connect the tilting ladder and the guardrail as one unit. This greatly improves the overall protective performance and the stability of the tilting ladder, and makes the operation safer and more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the automatic tilting staircase of the sprinkler truck of this utility model;

[0019] Figure 2 This is a side view of the automatic tilting staircase of the sprinkler truck of this utility model;

[0020] Figure 3 This utility model Figure 2 Sectional view at point AA;

[0021] Figure 4 This utility model Figure 3 Enlarged view at point B in the middle;

[0022] Figure 5This is a structural diagram showing the position of part of the vehicle frame and the automatic tilting staircase on the vehicle frame of the water sprinkler truck of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 100, frame; 110, working platform; 111, limiting groove; 120, guardrail; 130, protective plate; 131, ventilation hole; 200, tilting ladder; 201, vertical beam; 202, horizontal beam; 203, anti-slip foot pedal; 204, baffle; 205, slot; 206, locking strip; 300, passage; 400, hinge seat; 500, tilting plate; 600, through hole; 700, drive assembly; 710, rotating rod; 711, protective sleeve; 720, rotating handle; 721, extension sleeve; 722, anti-slip gripping part; 800, pin; 900, latch. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0025] like Figure 1-4As shown: This embodiment provides an automatic tilting staircase for a sprinkler truck, including a working platform 110 welded to the rear of the sprinkler truck frame 100. The working platform 110 is composed of an aluminum alloy profile frame and aluminum alloy plates welded together. Multiple light-removal holes are provided on the aluminum alloy plates. A guardrail 120 is welded onto the working platform 110, made of stainless steel pipe or stainless steel profile. A tilting ladder frame 200 is also hinged to the working platform 110 via a hinge shaft. Spring clips are provided at both ends of the hinge shaft to prevent axial movement. A passage 300 is reserved between the guardrail 120 and the working platform 110 to facilitate the operator's access. This passage 300 can accommodate a 200kg person and its width is generally designed to be 80-1.5 meters. The working platform 110 is equipped with a mechanism for tilting... The drive assembly 700 for rotating the ladder frame 200 can drive the ladder frame 200 to rotate and cooperate with the guardrail to close and open the passage 300. This utility model can drive the ladder frame 200 to rotate until it is flush with the guardrail, thus forming an integral protective enclosure structure with the guardrail. This not only avoids the ladder frame 200 being exposed outside the vehicle body, which affects the aesthetics and poses certain safety hazards, but also effectively blocks the side wall of the work platform 110, greatly increasing the safety of maintenance personnel. At the same time, the drive assembly 700 can drive the ladder frame 200 to rotate until it rests on the ground, making it easier and more convenient for operators to get on and off the work platform 110, greatly increasing the safety performance and functionality of the protective ladder frame.

[0026] According to one embodiment of the present invention, such as Figure 1-4As shown, the work platform 110 is also welded with two hinge seats 400, located on the side walls of the work platform 110 on both sides of the passage 300. Each hinge seat 400 is hinged with a flip plate 500. The hinge shaft passes through the hinge seat 400 and the flip plate 500. Both ends of the hinge shaft are equipped with retaining rings to prevent the hinge shaft from slipping out of the hinge hole connecting the hinge seat 400 and the flip plate 500. Each flip plate 500 has a through hole 600 located above the hinge hole. The axes of the two through holes 600 coincide. The drive assembly 700 includes the two through holes 600. A rotating rod 710 is interspersed, with one end of the rotating rod 710 located on the outside of the flip plate 500 and mounted on the rotating handle 720. Turning the rotating handle 720 allows the rotating rod 710 to rotate around the through hole 600. In this invention, the operator can hold the rotating handle 720 and pull the rotating rod 710 along the axis of the through hole 600 to a suitable position. Then, by turning the rotating handle 720, the rotating rod 710 and the flip plate 500, along with the flip ladder 200, can be rotated around the hinge part with the hinge seat 400 to a suitable angle, enabling convenient lowering and folding of the flip ladder 200, making the operation more convenient and efficient.

[0027] Another embodiment of the drive assembly 700 is that the drive assembly 700 is electrically driven and electrically connected to the controller in the control room of the sprinkler truck. The drive assembly 700 is a telescopic push rod hinged at the bottom of the frame 100 and located near the tilting ladder 200. The telescopic push rod can be any of the electric push rod, pneumatic push rod, or hydraulic push rod in the prior art. A rain shield is provided under the frame 100, and the telescopic push rod is located under the rain shield. If necessary, a waterproof telescopic push rod can be selected. The fixed end of the telescopic push rod is hinged at the bottom of the frame 100, and the output end of the telescopic push rod is hinged on the tilting plate 500 of the tilting ladder 200. The extension and retraction of the output rod of the telescopic push rod are used to realize the folding and release of the tilting ladder 200.

[0028] According to another embodiment of the present invention, such as Figure 1 and Figure 2As shown, a limiting groove 111 is provided on the working platform 110, and a clearance groove is provided on the frame 100 of the sprinkler truck for the rotating handle 720 to pass through. The clearance groove provides suitable clearance space for the rotation of the rotating handle 720, so that the rotating handle 720 can smoothly rotate the tilting ladder 200 to the appropriate release and retraction position. A protective sleeve 711 is fitted on the other end of the rotating rod 710. The protective sleeve 711 is made of non-slip and wear-resistant rubber or plastic material. The protective sleeve 711 is used to prevent the rotating rod 710 from slipping out of the through hole 600 when it moves along the axial direction under the pulling action of the rotating handle 720, thereby limiting the axial movement of the rotating rod 710. The rotating handle 720 is located in the limiting groove 111. On the other side of 11, pushing and pulling the rotating handle 720 can pull the rotating rod 710 to slide along the axis of the through hole 600. Turning the rotating handle 720 can rotate the rotating rod 710 until it is engaged in the limiting groove 111. This utility model can use the pushing and rotating handle 720 to smoothly engage the rotating handle 720 in the limiting groove 111, thereby limiting the rotation of the rotating rod 710 and preventing the tilting ladder 200 from falling automatically. Moreover, by pulling the rotating handle 720, it can be pulled out of the limiting groove 111, and then the rotating handle 720 can be used to smoothly lower the tilting ladder 200, making the operation more convenient and safer.

[0029] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a baffle 204 is fitted onto the outer side of the rotating rod 710. The baffle 204 is located inside the tilting ladder frame 200 and is welded together with the tilting ladder frame 200. The tilting ladder frame 200 is a frame structure and includes a vertical beam 201 and a horizontal beam 202. The horizontal beam 202 and the vertical beam 201 are welded together. An anti-slip foot pedal 203 is provided on the horizontal beam 202. The anti-slip foot pedal 203 is made of plastic material with anti-slip protrusions. The anti-slip foot pedal 203 can greatly increase the safety of workers going up and down the tilting ladder. A slot 205 is provided inside the baffle 204. A locking strip 206 is provided to match the slot 205. Through the cooperation of the locking strip 206 and the slot 205, the rotation of the rotating rod 710 can drive the baffle 204 and the tilting ladder 200 to rotate. The baffle 204 can be welded into the tilting ladder 200, which on the one hand achieves a firm and stable tilting effect on the tilting ladder 200, and on the other hand can effectively block and protect the gap between the crossbeam 202 and the vertical beam 201, avoiding the risk of tools falling and sliding off the work platform 110 during maintenance operations, making it safer and more convenient.

[0030] According to another embodiment of the present invention, such as Figure 1 and Figure 2As shown, a protective plate 130 is also provided on the side wall of the guardrail 120. The protective plate 130 has multiple ventilation holes 131. This utility model can facilitate the rapid flow of air through the ventilation holes 131 on the protective plate 130, which helps to reduce the wind resistance when the water truck accelerates after watering or when it needs to replenish water, thereby reducing fuel consumption to a certain extent. Moreover, it can reduce the overall weight of the work platform 110 while providing a certain level of protection.

[0031] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the diameter of the rotating handle 720 is larger than the diameter of the rotating shaft. An extension sleeve 721 is fitted on the outer side of the rotating handle 720. The front end of the extension sleeve 721 is a flexible tube, and the rear end of the extension sleeve 721 is a rigid tube. An anti-slip gripping part 722 is also provided on the outer side of the extension sleeve 721. This utility model can easily adjust the depth of the extension sleeve 721 between the front end of the extension sleeve 721 and the rotating handle 720 by designing the front end of the extension sleeve 721 as a flexible tube, so as to realize the convenient adjustment of the length of the extension sleeve 721. Moreover, the rigid tube design at the rear end of the extension sleeve 721 can enhance the strength of the rotating handle 720 during rotation. The anti-slip gripping part 722 can achieve better protection during operation, avoiding the operator's hand injury during the rotation of the rotating handle 720, making the operation more convenient and safer.

[0032] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, both the guardrail 120 and the flip ladder 200 are equipped with pins 800. The guardrail 120 is equipped with a latch 900 that matches the pins 800. The latch 900 is hinged to the pins 800 on the guardrail 120 and can rotate along the pins 800 on the guardrail 120 to engage with the pins 800 on the flip ladder 200. This utility model can achieve the formation of a protective whole between the flip ladder 200 and the guardrail when the flip ladder 200 is folded up through the cooperation of the latch 900 and the pins 800, which greatly increases the safety and stability of the flip ladder 200 after it is folded up.

[0033] How to use this utility model:

[0034] First, it needs to be clarified that the flip-up staircase involved in this utility model is mainly used on the working platform 110 of large vehicles such as water trucks. Its purpose is to facilitate workers to easily get on and off the working platform 110. Its specific length and size need to be designed according to the height of the vehicle and the width of the workers. This utility model takes the workers getting on and off the working platform 110 of the water truck as an example to describe its usage in detail. When the workers need to climb onto the operating platform, the operator first adjusts the relative length of the extension sleeve 721 and the rotating handle 720. The specific operation is as follows: pull the extension sleeve 721 downwards or push it upwards until it is easy for the operator to apply force. Then, the operator uses the push rod to rotate the latch 900 until it separates from the pin 800 on the flip ladder 200. Next, the operator pulls the extension sleeve 721, moving the rotating handle 720 and the rotating rod 710 along the axis of the through hole 600 until it avoids the limiting groove 111. Then, the operator rotates the extension sleeve 721 until the rotating handle 720 and the rotating rod 710 push the baffle 204 that is engaged with it. The tilting ladder 200, fixed together with 204, rotates around the hinge axis until it is released. Then, the operator can easily climb onto the work platform 110 along the tilting ladder 200. After the operator is on the work platform 110, the operator rotates the handle 720 in the opposite direction, which drives the lever 710 and pushes the baffle 204 that is engaged with it and the tilting ladder 200 fixed together with the baffle 204 to rotate around the hinge axis until the tilting ladder 200 is collinear with the guardrail 120. Then, the operator pushes the handle 720 inward to the appropriate position and rotates it. Once the ladder is inserted into the limiting groove 111, the operator can then carry out maintenance work. This utility model can hinge the tilting ladder 200 to the working platform 110 behind the sprinkler truck frame 100. When in use, it can be tilted down to facilitate the operator's entry and exit from the sprinkler truck. After use, it can be rolled up to form a whole with the guardrail 120 to achieve the safety protection of the working platform 110. This solves the problem that the traditional tilting ladder 200 is exposed outside the vehicle body, affecting the vehicle's driving safety and overall aesthetics.

[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A self-turning ladder for a water truck, a tail of a frame (100) of the water truck is provided with a working platform (110), a guardrail (120) is arranged on the working platform (110), characterized in that: The work platform (110) is also hinged with a tilting ladder (200). A passage (300) is reserved between the guardrail (120) and the work platform (110) to facilitate the operation of personnel going up and down. The work platform (110) is provided with a drive component (700) to rotate the tilting ladder (200). The drive component (700) can drive the tilting ladder (200) to rotate to cooperate with the guardrail to close and open the passage (300).

2. The automatic tipping stairway for a sprinkling truck as claimed in claim 1, wherein: The working platform (110) is provided with a hinge seat (400). There are two hinge seats (400) located on both sides of the channel (300). Each hinge seat (400) is hinged with a flip plate (500). Each flip plate (500) has a through hole (600). The axes of the two through holes (600) coincide. The drive assembly (700) includes a rotating rod (710) inserted between the two through holes (600). One end of the rotating rod (710) is located on the outside of the flip plate (500) and is provided on a rotating handle (720). Turning the rotating handle (720) can rotate the rotating rod (710) around the through hole (600).

3. The automatic tipping stairway for a sprinkling truck as claimed in claim 2, wherein: The working platform (110) has a limiting groove (111), and the other end of the rotating rod (710) is provided with a protective sleeve (711). The rotating handle (720) is located on the side of the limiting groove (111). Pushing and pulling the rotating handle (720) can pull the rotating rod (710) to slide along the axis of the through hole (600). Twisting the rotating handle (720) can rotate the rotating rod (710) until it is inserted into the limiting groove (111).

4. The automatic tilting staircase of the sprinkler truck as described in claim 2, characterized in that: A baffle (204) is provided on the outer side of the rotating rod (710). The baffle (204) is located inside the tilting ladder (200). The baffle (204) is fixedly connected to the tilting ladder (200). A slot (205) is provided inside the baffle (204). A locking strip (206) that matches the slot (205) is provided on the outer side of the rotating rod (710).

5. The automatic tipping stairway for a sprinkling truck of claim 1 wherein: The guardrail (120) is also provided with a guard plate (130) on its side wall, and the guard plate (130) has a plurality of ventilation holes (131).

6. The automatic tipping stairway for a sprinkling truck of claim 3 wherein: The diameter of the rotating handle (720) is larger than the diameter of the rotating shaft. An extension sleeve (721) is fitted on the outside of the rotating handle (720). The front end of the extension sleeve (721) is a flexible tube, and the rear end of the extension sleeve (721) is a rigid tube.

7. The automatic tipping stairway for a sprinkling truck of claim 6 wherein: The extension sleeve (721) is also provided with an anti-slip gripping part (722) on its outer side.

8. The automatic tipping stairway for a sprinkling truck of claim 1 wherein: The flip ladder (200) is a frame structure and includes vertical beams (201) and horizontal beams (202), with anti-slip foot pedals (203) provided on the horizontal beams (202).

9. The automatic tipping stairway for a sprinkling truck of claim 8 wherein: Both the guardrail (120) and the flip ladder (200) are provided with pins (800). The guardrail (120) is provided with a latch (900) that matches the pin (800). The latch (900) is hinged to the pin (800) on the guardrail (120) and can rotate along the pin (800) on the guardrail (120) to engage with the pin (800) on the flip ladder (200).

10. The automatic tipping stairway for a sprinkling truck of claim 2 wherein: The working platform (110) is welded to the rear of the frame (100) of the water truck, and the frame (100) of the water truck is provided with a clearance groove for the rotating handle (720) to pass through.

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