A vehicle-mounted telescopic ladder
By using wear-resistant sliding plates and positioning pin holes in the vehicle elevator, the problems of inconvenient storage and noise of the vehicle elevator are solved, achieving compact storage and flexible positioning, and improving user experience and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU HONGYU SPECIAL VEHICLE CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-30
AI Technical Summary
Existing vehicle-mounted elevators are inconvenient to store, have serious noise problems, and affect the comfort of drivers and passengers.
The design incorporates wear-resistant sliding plates spaced between fixed and extended ladders, along with positioning pin holes and pins, enabling zero-gap sliding and flexible positioning, eliminating collision noise, and adapting to various climbing scenarios.
It achieves compact storage of vehicle-mounted elevators, eliminates vibration and collision noise, and improves user experience and applicability.
Smart Images
Figure CN224432424U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of telescopic ladder technology, and in particular to a vehicle-mounted telescopic ladder. Background Technology
[0002] With the continuous increase in car ownership, the portability and practicality of in-vehicle tools are receiving increasing attention. In-vehicle ladders, as a common tool for car owners to assist in climbing in special situations, are traditionally either fixed-length straight ladders or telescopic ladders with extensions secured by mechanical clips. However, existing technologies have the following shortcomings:
[0003] Inconvenient storage: Fixed-length ladders take up a lot of space in the vehicle, and the retraction operation of telescopic ladders is often complicated and difficult to store compactly, resulting in low utilization of the vehicle's interior space.
[0004] Noise issue: During vehicle operation, the moving parts of the telescopic ladder are prone to collision due to vibration, generating noise and affecting the comfort of the ride.
[0005] To address these pain points, a new type of vehicle-mounted telescopic ladder has emerged. This solution utilizes a unique fixed ladder and extension ladder sleeve structure combined with a wear-resistant sliding plate to achieve zero-gap sliding and eliminate collision noise. Simultaneously, the innovative positioning pin hole and positioning pin design gives the ladder flexible and precise positioning capabilities, enabling it to better adapt to different climbing scenarios and significantly improving the practicality and user experience of the vehicle-mounted ladder. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, this utility model discloses a vehicle-mounted telescopic ladder.
[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:
[0008] A vehicle-mounted telescopic ladder includes:
[0009] Fixed ladder;
[0010] An extension ladder, which is movably fitted at the bottom of the fixed ladder;
[0011] Abrasion-resistant sliding plates are installed between fixed ladders and extension ladders, and multiple plates are spaced apart; they are used to maintain zero-gap sliding between the fixed ladders and extension ladders.
[0012] The positioning pin hole is located on the wear-resistant sliding plate surface, and the top of the extension ladder is provided with a through hole that can correspond to and coincide with the positioning pin hole;
[0013] The positioning pin is installed at the top of the extension ladder; when the positioning pin passes through the through hole of the extension ladder and is inserted into the corresponding positioning pin hole, it restricts the relative movement of the extension ladder and the fixed ladder.
[0014] Preferably, the ladder rods are fixed, and there are two of them spaced apart;
[0015] Fixed ladder crossbars are multiple crossbars spaced apart between two fixed ladder crossbars.
[0016] Preferably, there are two extended ladder rods spaced apart; the extended ladder rods have a C-shaped structure, and the two extended ladder rods are respectively movably sleeved on the two fixed ladder rods;
[0017] An extension ladder crossbar group consists of multiple crossbars spaced apart; each crossbar group contains two crossbars, which together with two extension ladder bars form a frame structure.
[0018] Preferably, wear-resistant sliding plates are installed at the four corners of the fixed ladder rod, and the surface and end face of the wear-resistant sliding plates avoid corresponding contact with the inside of the extension ladder rod.
[0019] Preferably, the fixed ladder rod is provided with an upward limiting seat.
[0020] Preferably, a first lower limit baffle is fastened to the bottom of the fixed ladder rod, and a second lower limit baffle is fastened to the top of the extended ladder rod, the surface of the second lower limit baffle being able to contact the surface of the first lower limit baffle.
[0021] Preferably, the extension ladder is equipped with legs, and the supporting surface of the legs is provided with rubber pads.
[0022] Preferably, the top of the fixed ladder is equipped with a hook; the bottom of the extension ladder is equipped with an anti-slip mat.
[0023] By adopting the technical solution described above, this utility model has the following beneficial effects:
[0024] (1) The wear-resistant sliding plates installed between the fixed ladder and the extension ladder of this utility model can achieve zero-gap sliding between the two, avoiding noise caused by collision during telescopic sliding operation or storage. Especially during vehicle operation, after the extension ladder or fixed ladder is firmly fixed, noise caused by vibration and collision can be effectively prevented, greatly optimizing the user experience.
[0025] (2) The design of the positioning pin hole on the wear-resistant sliding plate surface of this utility model and the through hole and positioning pin at the top of the extension ladder can restrict the relative movement between the extension ladder and the fixed ladder. By inserting the positioning pin into different positioning pin holes, the relative position relationship between the fixed ladder and the extension ladder can be flexibly adjusted, thereby adapting to different heights and increasing the applicability of the telescopic ladder.
[0026] (3) The present invention further enables the wear-resistant sliding plate to be installed at the four corners of the fixed ladder rod, and its plate surface and end face respectively contact the inner surface of the extended ladder rod to ensure zero gap contact state. Adjacent wear-resistant sliding plates are arranged in an up-down staggered manner, reducing the number of plates used. At the same time, the wear-resistant sliding plate is made of polytetrafluoroethylene, which has good wear resistance and self-lubrication, further ensuring the smoothness of relative sliding.
[0027] (4) The cooperation between the upper limit seat on the fixed ladder rod and the first lower limit baffle and the second lower limit baffle at the top of the extension ladder rod respectively limits the travel of the fixed ladder and the extension ladder when they are retracted to the shortest state and extended to the longest state, preventing accidental separation and improving the safety of use. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of this utility model;
[0029] Figure 2 This is a sectional view of the extended ladder;
[0030] Figure 3 A schematic diagram of the cross-section of the extended ladder;
[0031] Figure 4 for Figure 1 Top view.
[0032] In the diagram: 1. Fixed ladder; 1-1. Fixed ladder bar; 1-2. Fixed ladder crossbar; 2. Extension ladder; 2-1. Extension ladder bar; 2-2. Extension ladder crossbar assembly; 3. Wear-resistant sliding plate; 4. Locating pin hole; 5. Locating pin; 6. Upper limit seat; 7. First lower limit baffle; 8. Second lower limit baffle; 9. Support leg; 10. Hook; 11. Anti-slip mat. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0034] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] Example 1:
[0037] Combined with appendix Figures 1-4 A vehicle-mounted telescopic ladder includes a fixed ladder 1, an extension ladder 2, and a wear-resistant sliding plate 3. The extension ladder 2 is movably fitted onto the bottom of the fixed ladder 1. This design allows the extension ladder 2 to be pulled out relative to the fixed ladder 1, thus extending its length. Conversely, when storage is needed, the fixed ladder 1 can be easily inserted into the extension ladder 2, thereby shortening its length and reducing space occupancy.
[0038] A wear-resistant sliding plate 3 is installed between the fixed ladder 1 and the extension ladder 2, and multiple wear-resistant sliding plates 3 are arranged at intervals. Their core function is to maintain a zero-gap sliding state between the fixed ladder 1 and the extension ladder 2. Because the fit between the fixed ladder 1 and the extension ladder 2 achieves a zero-gap standard, the fixed ladder 1 and the extension ladder 2 will not collide with each other during telescopic sliding operations or when stored, thus eliminating noise. Especially during vehicle operation, simply securing the extension ladder 2 or the fixed ladder 1 firmly can prevent collisions due to vibration, thereby eliminating noise and significantly optimizing the user experience.
[0039] Furthermore, the wear-resistant sliding plate 3 has positioning pin holes 4 on its surface, and the top of the extension ladder 2 has a through hole that corresponds to the positioning pin holes 4. A positioning pin 5 is also fitted to the top of the extension ladder 2. When the positioning pin 5 passes through the through hole of the extension ladder 2 and engages with the corresponding positioning pin hole 4, the relative movement between the extension ladder 2 and the fixed ladder 1 is restricted. By inserting the positioning pin 5 into different positioning pin holes 4, the relative positional relationship between the fixed ladder 1 and the extension ladder 2 can be adjusted accordingly to adapt to different heights of the climbing surface.
[0040] In addition, the positioning pin 5 can be fixed to the extension ladder 2 by means of rope or chain, which can effectively prevent the positioning pin 5 from being lost accidentally.
[0041] Example 2:
[0042] Combined with appendix Figures 1 to 3 This paper introduces a vehicle-mounted telescopic ladder, which features a further refined design compared to Embodiment 1. Specifically, the fixed ladder 1 consists of fixed ladder rods 1-1 and fixed ladder crossbars 1-2. Two fixed ladder rods 1-1 are spaced apart, and multiple fixed ladder crossbars 1-2 are spaced apart between these two fixed ladder rods 1-1. The extension ladder 2 consists of extension ladder rods 2-1 and extension ladder crossbar groups 2-2. Two extension ladder rods 2-1 are also spaced apart and have a C-shaped structure. The two extension ladder rods 2-1 are movably fitted onto the outside of the two fixed ladder rods 1-1. The opening design of the extension ladder rods 2-1 allows the fixed ladder crossbars 1-2 to pass smoothly, thereby realizing the relative sliding function of the fixed ladder 1 and the extension ladder 2. The extension ladder crossbar group 2-2 is also set in multiple intervals. Each extension ladder crossbar group 2-2 contains two crossbars. These two crossbars, together with the two extension ladder bars 2-1, form a frame structure. This structural design can effectively ensure the overall stability and structural strength.
[0043] Furthermore, as shown in the appendix Figure 3 As shown, wear-resistant sliding plates 3 are installed at the four corners of the fixed ladder rod 1-1. The surface and end face of the wear-resistant sliding plate 3 respectively contact the inner surface of the extension ladder rod 2-1, thereby effectively ensuring a zero-gap contact state between the fixed ladder rod 1-1 and the extension ladder rod 2-1. (See attached diagram.) Figure 2 As shown, among the multiple wear-resistant sliding plates 3 on the same side of the fixed ladder rod 1-1, adjacent wear-resistant sliding plates 3 are arranged in a staggered manner, which effectively reduces the number of wear-resistant sliding plates 3 used. The wear-resistant sliding plates 3 can be made of polytetrafluoroethylene (PTFE), which has good wear resistance and self-lubricating properties, effectively ensuring the smoothness of relative sliding between the fixed ladder rod 1-1 and the extension ladder rod 2-1.
[0044] In addition, the fixed ladder rod 1-1 is equipped with an upward limiting seat 6. When the fixed ladder 1 and the extension ladder 2 are retracted to their shortest length, the top of the extension ladder rod 2-1 will contact the upward limiting seat 6, thereby limiting further shortening of the fixed ladder 1 and the extension ladder 2. Simultaneously, a first lower limiting baffle 7 is securely connected to the bottom of the fixed ladder rod 1-1, and a second lower limiting baffle 8 is securely connected to the top of the extension ladder rod 2-1. The surface of the second lower limiting baffle 8 can correspondingly contact the surface of the first lower limiting baffle 7. When the fixed ladder 1 and the extension ladder 2 are in their longest extended state, the second lower limiting baffle 8 correspondingly contacts the first lower limiting baffle 7, thereby limiting the downward travel of the extension ladder 2 and preventing accidental separation of the fixed ladder 1 and the extension ladder 2.
[0045] Example 3:
[0046] Combined with appendix Figures 1 to 2 This paper presents a vehicle-mounted telescopic ladder, which further optimizes and improves the relevant structure based on Embodiment 1 or 2. Specifically, a support leg 9 is installed at the position of the extension ladder rod 2-1, and a rubber pad is placed on the supporting surface of the support leg 9. With this design, when pedaling, the support leg 9 can contact the vehicle body, avoiding direct contact between the fixed ladder 1 or the extension ladder 2 and the vehicle body, thereby preventing damage to the vehicle body paint.
[0047] Furthermore, a hook 10 is installed at the top of the fixed ladder 1, and an anti-slip mat 11 is installed at the bottom of the extension ladder 2. The fixed ladder 1 can be suspended for use via the hook 10, while the extension ladder 2 can be used directly on the ground. In this case, the anti-slip mat 11 can effectively play an anti-slip role, thereby ensuring the overall stability.
[0048] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.
Claims
1. A vehicle-mounted telescopic ladder, characterized in that, include: Fixed ladder (1); The extension ladder (2) is movably fitted at the bottom of the fixed ladder (1); A wear-resistant sliding plate (3) is installed between the fixed ladder (1) and the extension ladder (2), and there are multiple plates spaced apart; it is used to maintain zero-gap sliding between the fixed ladder (1) and the extension ladder (2); The positioning pin hole (4) is provided on the surface of the wear-resistant sliding plate (3), and the top of the extension ladder (2) is provided with a through hole that can correspond to and coincide with the positioning pin hole (4); The positioning pin (5) is installed on the top of the extension ladder (2); when the positioning pin (5) passes through the through hole of the extension ladder (2) and is inserted into the corresponding positioning pin hole (4), it restricts the relative movement of the extension ladder (2) and the fixed ladder (1).
2. The vehicle-mounted telescopic ladder as described in claim 1, characterized in that, The fixed ladder (1) includes: Fixed ladder rods (1-1), which are two spaced apart; Fixed ladder crossbars (1-2) are multiple ones that are spaced apart between two fixed ladder crossbars (1-1).
3. The vehicle-mounted telescopic ladder as described in claim 2, characterized in that, The extension ladder (2) includes: The extension ladder rods (2-1) are two of them, spaced apart; the extension ladder rods (2-1) have a C-shaped structure, and the two extension ladder rods (2-1) are respectively movably sleeved on the outside of the two fixed ladder rods (1-1); The extension ladder crossbar group (2-2) consists of multiple crossbars spaced apart; the extension ladder crossbar group (2-2) includes two crossbars, which together with the two extension ladder bars (2-1) form a frame structure.
4. The vehicle-mounted telescopic ladder as described in claim 3, characterized in that: Wear-resistant sliding plates (3) are installed at the four corners of the fixed ladder rod (1-1). The surface and end face of the wear-resistant sliding plate (3) should not make corresponding contact with the inside of the extension ladder rod (2-1).
5. The vehicle-mounted telescopic ladder as described in claim 3, characterized in that: The fixed ladder rod (1-1) is provided with an upward limiting seat (6).
6. The vehicle-mounted telescopic ladder as described in claim 3, characterized in that: The bottom of the fixed ladder rod (1-1) is fastened with a first lower limit baffle (7), and the top of the extended ladder rod (2-1) is fastened with a second lower limit baffle (8). The surface of the second lower limit baffle (8) can contact the surface of the first lower limit baffle (7).
7. The vehicle-mounted telescopic ladder as described in claim 3, characterized in that: The extension ladder rod (2-1) is equipped with a support leg (9), and the support surface of the support leg (9) is provided with a rubber pad.
8. The vehicle-mounted telescopic ladder as described in claim 1, characterized in that: The top of the fixed ladder (1) is equipped with a hook (10); the bottom of the extension ladder (2) is equipped with an anti-slip mat (11).