A folding turntable ladder

Abstract

The utility model relates to engineering machinery technical field, the utility model provides a kind of folding turnover ladder, including first ladder frame and second ladder frame, first ladder frame one end is connected with the connecting plate hinged with frame, connecting plate is provided with the clamping groove of cooperation with the edge of frame clamping, first ladder frame other end is hinged with second ladder frame, and the end surface of second ladder frame hinged end is provided with the anti-collision pad block of contact with the end surface of first ladder frame, locking seat is provided on first ladder frame, locking tongue is provided on second ladder frame with locking seat cooperation for folding second ladder frame is fixed on the first ladder frame, by the setting of first ladder frame, second ladder frame and connecting plate, the convenient connection and foldable storage of folding turnover ladder and frame are realized, space is greatly saved, the convenience of transportation and storage is improved, and by the cooperation structure of locking seat and locking tongue, the reliable locking of first ladder frame and second ladder frame after folding is realized, accidental unfolding under folding state is avoided, and the safety in use process is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and more specifically, to a folding and flipping ladder. Background Technology

[0002] In the field of construction machinery, small wheeled steel grabbers, as a type of equipment commonly used for material grabbing and handling, often require a structural design that balances operational flexibility with space compactness. However, the ease of design of the equipment's loading and unloading area has long been neglected, especially the access for personnel, which directly affects the equipment's daily maintenance and operational efficiency.

[0003] Currently, small wheeled steel grabbers on the market, due to their compact upper structure and small overall size, do not come equipped with a dedicated ladder. When maintenance or repairs are required on the top of the upper structure, operators can only climb onto the machine from one side. This method not only lacks a stable support structure but also requires climbing in a narrow space, causing great inconvenience to maintenance personnel and posing certain safety hazards, making it difficult to meet the requirements for efficient and safe operation. Utility Model Content

[0004] The purpose of this utility model is to provide a folding and flipping ladder, which solves the problem of inconvenience in loading small wheeled steel grabbers.

[0005] This utility model is achieved through the following technical solution: a folding and flipping ladder, including a first ladder frame and a second ladder frame. One end of the first ladder frame is connected to a connecting plate that is hinged to the frame. The connecting plate is provided with a slot that engages with the edge of the frame. The other end of the first ladder frame is hinged to the second ladder frame. An anti-collision pad is provided on the end face of the hinged end of the second ladder frame, which contacts the end face of the first ladder frame. A lock seat is provided on the first ladder frame. A lock tongue is provided on the second ladder frame that engages with the lock seat to fix the folded second ladder frame to the first ladder frame.

[0006] Furthermore, the second ladder is hinged with a support cylinder, and a telescopic frame is movably sleeved inside the support cylinder. The telescopic frame has a connecting hole, and the support cylinder has several adjustment holes evenly spaced along its length. A pin passes through the adjustment holes and the connecting holes to fix the position of the telescopic frame relative to the support cylinder.

[0007] Furthermore, a fixing hole is provided on the support cylinder, and a bolt is threaded through the fixing hole to connect with the second ladder frame to fix the folded support cylinder to the second ladder frame.

[0008] Furthermore, the lock base includes two lock cylinders arranged opposite each other, with a stop ball inside the lock cylinder and a spring between the stop ball and the lock cylinder. The stop balls in the two lock cylinders are arranged facing each other, and the lock tongue has a bent protruding structure and is elastically engaged between the stop balls of the two lock cylinders.

[0009] Furthermore, shock-absorbing rubber pads are installed inside the card slot.

[0010] Furthermore, both the first and second ladders include a footboard and uprights connected to both ends of the footboard, with anti-slip holes provided on the footboard.

[0011] Furthermore, the connecting plate is bolted to the upright, and reinforcing ribs are welded between the connecting plates.

[0012] This utility model has at least the following advantages and beneficial effects:

[0013] (1) By setting up the first ladder, the second ladder and the connecting plate, the folding and flipping ladder and the frame are conveniently connected and can be folded and stored, which saves space and improves the convenience of transportation and storage. The lock seat and the lock tongue are combined to achieve reliable locking of the first ladder and the second ladder after folding, avoiding accidental unfolding in the folded state and enhancing the safety during use.

[0014] (2) By connecting the support tube and the telescopic frame, the ladder support length can be flexibly adjusted, which can adapt to the needs of different heights and terrains and expand the scope of application. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a folding and flipping ladder provided by this utility model.

[0016] Figure 2 This is a structural schematic diagram of a folding and flipping ladder provided by this utility model from another perspective.

[0017] Figure 3 A cross-sectional view of the hinged position between the middle support cylinder and the second ladder frame of a folding and flipping ladder provided by this utility model.

[0018] Figure 4 This is a schematic diagram showing the hinge position between the first and second ladder frames in a folding and flipping ladder provided by this utility model.

[0019] Figure 5 A side view of the locking seat in a folding and flipping ladder provided by this utility model.

[0020] Figure 6 A side view of the locking tongue in a folding and flipping ladder provided by this utility model.

[0021] Attached reference numerals: 1-First ladder frame, 11-Step, 110-Lightening hole, 12-Upright post, 2-Second ladder frame, 3-Connecting plate, 30-Slot, 31-Reinforcing rib, 4-Anti-collision pad, 5-Lock seat, 51-Lock cylinder, 52-Ball catch, 6-Lock tongue, 7-Support cylinder, 71-Telescopic frame, 72-Adjusting hole, 73-Fixing hole. Detailed Implementation

[0022] The specific implementation method is described below with reference to the accompanying drawings.

[0023] Example

[0024] like Figures 1 to 6 As shown in this embodiment, a folding and flipping ladder is disclosed, suitable for scenarios with high space utilization requirements, such as vehicles. It is convenient to carry and store, especially suitable for small wheeled steel grabbers, facilitating operators to get on and off the vehicle. Its main structure includes a first ladder frame 1 and a second ladder frame 2. One end of the first ladder frame 1 is connected to a connecting plate 3 that is hinged to the vehicle frame. The connecting plate 3 is provided with a slot 30 that engages with the edge of the vehicle frame. The other end of the first ladder frame 1 is hinged to the second ladder frame 2, and the end face of the hinged end of the second ladder frame 2 is provided with an anti-collision pad 4 that contacts the end face of the first ladder frame 1. A locking seat 5 is provided on the first ladder frame 1, and a locking tongue 6 is provided on the second ladder frame 2 that engages with the locking seat 5 to fix the folded second ladder frame 2 to the first ladder frame 1. Specifically, the folding and flipping ladder is connected to one side of the steel grabber through a hinge plate and a pin. When not in use, the folding and flipping ladder can be flipped up onto the loading platform without affecting the appearance, operation of the steel grabber, or relocation. The connecting plate 3 is L-shaped, with its inner bent side forming a slot 30. In use, the folding ladder is flipped down, allowing the slot 30 to engage with the edge of the frame, forming the ladder's fulcrum. The first ladder frame 1 and the second ladder frame 2 are angled for easy access for operators. The first ladder frame 1 and the second ladder frame 2 are hinged; when not in use, the second ladder frame 2 can be folded onto the first ladder frame 1, saving space. The anti-collision pad 4 can be made of rubber. When the second ladder frame 2 is unfolded, the anti-collision pad 4 can buffer the impact force, preventing direct contact between the ladder frame ends and causing wear, deformation, or even damage, extending the ladder's lifespan and reducing maintenance costs. Simultaneously, the anti-collision pad 4 can reduce noise from collisions, providing a quieter and more comfortable user environment. The lock seat 5 and the lock tongue 6 form a locking structure, ensuring stability in the folded state. After the ladder is folded, the lock tongue 6 and the lock seat 5 engage tightly to prevent the ladder from accidentally unfolding.

[0025] Furthermore, in specific implementation, such as Figure 2 and Figure 3As shown in the embodiment of this utility model, the second ladder frame 2 is hinged to a support cylinder 7, and a telescopic frame 71 is movably sleeved inside the support cylinder 7. The telescopic frame 71 has a connecting hole, and the support cylinder 7 has several adjusting holes 72 evenly spaced along its length. A pin passes through the adjusting holes 72 and the connecting holes to fix the position of the telescopic frame 71 relative to the support cylinder 7. Specifically, to ensure that the first ladder frame 1 and the second ladder frame 2 can be fully unfolded and to prevent the unfolded second ladder frame 2 from colliding with the ground, the bottom of the first ladder frame 1 and the second ladder frame 2 remains above the ground after unfolding, in a suspended state without lower support, resulting in unstable force and affecting the durability of the ladder. The support cylinder 7 and the telescopic frame 71 provide further support points for the folding and flipping ladder. The support angle and length of the ladder can be flexibly adjusted according to the actual usage scenario. For example, in vehicles at different heights or in different terrain environments, users can adjust the extension length of the telescopic frame 71 within the support cylinder 7, align the appropriate adjustment hole 72 with the connection hole, and insert the pin to support the telescopic frame 71 on the ground. This allows the ladder to better adapt to various usage needs, expanding its application range and improving its versatility. It should be noted that the hinge structure between the support cylinder 7 and the second ladder frame 2 includes a clamp welded to the end of the second ladder frame 2. The clamp has a through hole, through which a bolt is passed and connected to a fastening nut. The bolt serves as the hinge axis between the support cylinder 7 and the second ladder frame 2. When adjusting the support angle of the support cylinder 7 and the telescopic frame 71, the fastening nut is loosened, allowing the support cylinder 7 to rotate freely. After adjusting to the appropriate support angle, the fastening nut is rotated to clamp the clamp, locking the support angle.

[0026] Furthermore, in specific implementation, such as Figure 2 and Figure 3 As shown, the support cylinder 7 provided in this embodiment of the utility model has a fixing hole 73. A bolt passes through the fixing hole 73 and is threadedly connected to the second ladder frame 2 to fix the folded support cylinder 7 to the second ladder frame 2. When the ladder is in a folded state and needs to be stored or transported, the support cylinder 7 is firmly fixed to the second ladder frame 2, preventing the support cylinder 7 from shaking or accidentally unfolding, thus ensuring the overall compactness and stability. At the same time, this fixing method is simple to operate; simply tightening or loosening the bolts is sufficient to fix and disassemble the support cylinder 7, making it convenient and quick for users to operate under different usage conditions.

[0027] Furthermore, in specific implementation, such as Figure 5 and Figure 6As shown, the lock base 5 provided in this embodiment of the utility model includes two lock cylinders 51 arranged opposite to each other. A stop ball 52 is provided within each lock cylinder 51, and a spring is provided between the stop ball 52 and the lock cylinder 51. The stop balls 52 in the two lock cylinders 51 are arranged facing each other. The latch 6 has a bent protruding structure and is elastically engaged between the stop balls 52 of the two lock cylinders 51. Specifically, the latch 6 is formed by bending a steel sheet. When the latch 6 is inserted into the lock base 5, the stop ball 52 adapts to the insertion action of the latch 6 under the action of the spring, reducing rigid collisions. This protects both the latch 6 and the lock base 5, and makes the locking process smoother, ensuring the safety of the ladder in the folded state. At the same time, the operation is simple; the user only needs to press lightly to lock and pull to unlock, improving ease of use.

[0028] Furthermore, in a specific implementation, a shock-absorbing rubber pad is provided within the slot 30 provided in this embodiment of the present invention. When the connecting plate 3 is engaged with the edge of the frame via the slot 30, on the one hand, the shock-absorbing rubber pad can buffer the impact force transmitted from vehicle vibration to the ladder, reduce friction and wear between the ladder and the frame caused by vibration, and extend the service life of the connection between the ladder and the frame. On the other hand, the shock-absorbing rubber pad can also reduce noise caused by vibration, providing a quieter operating environment for the user. At the same time, the shock-absorbing rubber pad increases the friction between the slot 30 and the edge of the frame, making the connection more stable and preventing the ladder from loosening due to vibration during travel.

[0029] Furthermore, in specific implementation, such as Figure 1 and Figure 2 As shown, both the first ladder frame 1 and the second ladder frame 2 provided in this embodiment of the utility model include a footboard 11 and uprights 12 respectively connected to both ends of the footboard 11. The footboard 11 has anti-slip relief holes 110. Specifically, the design of the relief holes 110 reduces the overall weight of the ladder frame while ensuring the strength of the footboard 11, making the ladder easier to carry and operate. Simultaneously, the relief holes 110 also have an anti-slip function. When a user steps on the footboard 11, the sole of the shoe forms more friction with the edge of the relief holes 110 and the surface of the footboard 11, effectively preventing the user from slipping and improving safety. Furthermore, the presence of the relief holes 110 can also drain water to a certain extent. In humid environments, water can drain through the relief holes 110, preventing water accumulation on the surface of the footboard 11 and further enhancing the anti-slip effect. The connecting plate 3 is bolted to the uprights 12, and reinforcing ribs 31 are welded between the connecting plates 3. Specifically, the upright 12 can be made of channel steel with the opening facing inward. The connecting plate 3 is fitted into the opening of the channel steel to achieve a positioning connection. Then, the upright 12 and the connecting plate 3 are bolted together, which facilitates the assembly, maintenance and replacement of parts of the ladder. Moreover, the bolted connection can provide reliable connection strength and ensure the stability between the connecting plate 3 and the upright 12.

Claims

1. A folding and flipping ladder, characterized in that, The system includes a first ladder (1) and a second ladder (2). One end of the first ladder (1) is connected to a connecting plate (3) that is hinged to the frame. The connecting plate (3) is provided with a slot (30) that engages with the edge of the frame. The other end of the first ladder (1) is hinged to the second ladder (2). The end face of the hinged end of the second ladder (2) is provided with a collision protection pad (4) that contacts the end face of the first ladder (1). A lock seat (5) is provided on the first ladder (1). A locking tongue (6) is provided on the second ladder (2) that engages with the lock seat (5) to fix the folded second ladder (2) onto the first ladder (1).

2. A folding and flipping ladder according to claim 1, characterized in that, The second ladder (2) is hinged to a support cylinder (7), and a telescopic frame (71) is movably sleeved inside the support cylinder (7). The telescopic frame (71) has a connecting hole. The support cylinder (7) has several adjusting holes (72) evenly spaced along its length. A pin passes through the adjusting hole (72) and the connecting hole to fix the position of the telescopic frame (71) relative to the support cylinder (7).

3. A folding and flipping ladder according to claim 2, characterized in that, The support cylinder (7) has a fixing hole (73), and a bolt passes through the fixing hole (73) and is threadedly connected to the second ladder frame (2) to fix the folded support cylinder (7) onto the second ladder frame (2).

4. A folding and flipping ladder according to claim 1, characterized in that, The lock base (5) includes two lock cylinders (51) arranged opposite to each other. A ball stop (52) is limited inside the lock cylinder (51). A spring is provided between the ball stop (52) and the lock cylinder (51). The ball stop (52) inside the two lock cylinders (51) is arranged facing each other. The latch (6) is a bent protruding structure. The latch (6) is elastically engaged between the ball stop (52) of the two lock cylinders (51).

5. A folding and flipping ladder according to claim 1, characterized in that, The card slot (30) is provided with a shock-absorbing rubber pad.

6. A folding and flipping ladder according to claim 1, characterized in that, Both the first ladder (1) and the second ladder (2) include a footboard (11) and uprights (12) respectively connected to both ends of the footboard (11). The footboard (11) is provided with anti-slip relief holes (110).

7. A folding and flipping ladder according to claim 6, characterized in that, The connecting plate (3) is bolted to the upright (12), and reinforcing ribs (31) are welded between the connecting plates (3).

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