Hand-cranking lifting platform ladder

Abstract

The utility model relates to the technical field of hand cranking elevators, and provides a hand cranking lifting platform ladder which comprises an adjusting base, a top supporting plate is installed at the top end of the adjusting base, a shielding plate is further installed on the outer side wall of the top supporting plate, and the shielding plate is rotationally connected to the outer side wall of the top supporting plate. The bottom end of the outer side wall of the adjusting base is further provided with a hinge rod, the top end of the outer side wall of the adjusting base is further rotationally connected with an adjusting stair, the adjusting stair and the hinge rod are rotationally connected together, and the top of the adjusting stair is fixedly connected with a side wall baffle. The worm and the worm wheel are matched with the gear and the rack for transmission, the lifting efficiency of the lifting platform is improved, the self-locking function in the lifting process is achieved, and the safety of the platform is further enhanced. Compared with traditional chain transmission, hydraulic transmission and other modes, the transmission mechanism is lower in noise, lower in energy consumption and longer in service life, and better meets the requirements for environmental protection and energy conservation.

Description

Technical Field

[0001] This utility model relates to the field of hand-cranked elevator technology, specifically a hand-cranked lifting platform elevator. Background Technology

[0002] Aluminum alloy lifting platforms are widely used as efficient and convenient lifting tools in industrial production, construction, and routine maintenance. These platforms typically feature a compact structure, light weight, high load-bearing capacity, and ease of operation, meeting the needs of operations at various heights. However, existing technologies for aluminum alloy lifting platforms still have some areas for improvement.

[0003] Firstly, in terms of structural design, the stability and safety of some aluminum alloy lifting platforms need improvement. Especially when performing high-altitude operations, if the platform's structural design is unreasonable or the materials used for key components are inappropriate, the platform may sway or even overturn during lifting, posing a threat to the safety of workers.

[0004] Secondly, existing aluminum alloy lifting platforms mostly use a single transmission method, such as chain drive or hydraulic drive. These transmission methods are prone to wear and jamming during long-term use, affecting the normal operation of the lifting platform. At the same time, some transmission methods also have disadvantages such as high noise and high energy consumption, which are detrimental to environmental protection and energy conservation.

[0005] To address the problems raised in the background art, those skilled in the art have proposed a hand-cranked lifting platform ladder. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a hand-cranked lifting platform ladder, which solves the problems of wear and jamming that easily occur during long-term use in the prior art, affecting the normal operation of the lifting platform.

[0007] A hand-cranked lifting platform ladder includes an adjustable base, a top support plate installed at the top of the adjustable base, a baffle plate installed on the outer side wall of the top support plate, the baffle plate being rotatably connected to the outer side wall of the top support plate, a hinge rod installed at the bottom end of the outer side wall of the adjustable base, an adjustable staircase being rotatably connected to the top of the outer side wall of the adjustable base, the adjustable staircase being rotatably connected to the hinge rod, and a side wall baffle plate being fixedly connected to the top of the adjustable staircase.

[0008] An adjustment mechanism is provided between an adjustment base and a top support plate. The adjustment mechanism includes a fixed base, which is installed at the bottom end of the top support plate. A sliding rack is installed at the bottom end of the fixed base, and a storage box is sleeved on the outer side of the sliding rack.

[0009] Preferably, a connecting gear is installed on the inner side of the storage box, the outer wall of the connecting gear is meshed with the sliding rack, and a worm gear is also provided on the inner wall of the sliding rack.

[0010] Preferably, the inner walls of the worm gear and the connecting gear are rotatably connected to a connecting rod, which is installed on the inner wall of the sliding rack to support the rotation of the connecting gear and the worm gear.

[0011] Preferably, the inner sidewall of the sliding rack is rotatably connected to a worm gear, the worm gear is meshed with a worm wheel, the outer sidewall of the worm gear is fixedly connected to a transmission rod, and the outer sidewall of the transmission rod is fixedly connected to a rotating handle.

[0012] Preferably, the connecting gear drives the sliding rack to slide up and down by rotating, and the legs of the adjusting base can extend and retract, allowing the sliding rack to extend and retract, thus driving the adjusting base to slide.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By using a worm gear and rack and pinion transmission, not only is the lifting efficiency of the lifting platform improved, but a self-locking function is also achieved during the lifting process, further enhancing the platform's safety. Compared to traditional chain drives and hydraulic drives, the transmission mechanism of this patent has lower noise, lower energy consumption, and a longer service life, making it more in line with environmental protection and energy-saving requirements.

[0015] 2. By using the linkage pedals, the stair steps can change angles as the platform rises and falls, always remaining parallel to the platform, providing users with a more convenient and comfortable operating experience. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This utility model Figure 1 Schematic diagram of the central adjustment mechanism;

[0018] Figure 3 This utility model Figure 2 A schematic diagram of the cross-sectional structure.

[0019] In the diagram: 1. Adjustable base; 2. Baffle plate; 3. Hinge rod; 4. Adjustable staircase; 5. Side wall baffle; 6. Top support plate; 7. Fixed base; 71. Sliding rack; 72. Storage box; 74. Connecting gear; 75. Worm gear; 76. Worm; 77. Transmission rod; 78. Rotating handle. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] As attached Figure 1 To be continued Figure 3 As shown:

[0022] Example 1: This utility model provides a hand-cranked lifting platform ladder, including an adjustable base 1, a top support plate 6 installed at the top of the adjustable base 1, a baffle plate 2 installed on the outer side wall of the top support plate 6, the baffle plate 2 being rotatably connected to the outer side wall of the top support plate 6, a hinge rod 3 installed at the bottom of the outer side wall of the adjustable base 1, an adjustable staircase 4 being rotatably connected to the top of the outer side wall of the adjustable base 1, the adjustable staircase 4 being rotatably connected to the hinge rod 3, and a side wall baffle 5 being fixedly connected to the top of the adjustable staircase 4.

[0023] Specifically, the guardrail, which connects the side wall baffle 5 to the shield 2, can protect workers and prevent accidents during work.

[0024] An adjustment mechanism is disposed between the adjustment base 1 and the top support plate 6. The adjustment mechanism includes a fixed base 7, which is installed at the bottom end of the top support plate 6. A sliding rack 71 is installed at the bottom end of the fixed base 7. A storage box 72 is sleeved on the outer side of the sliding rack 71. A connecting gear 74 is installed on the inner side of the storage box 72. The outer wall of the connecting gear 74 is meshed with the sliding rack 71. A worm gear 75 is also provided on the inner wall of the sliding rack 71. The worm gear 75 and the inner wall of the connecting gear 74 are rotatably connected. A connecting rod is installed on the inner wall of the sliding rack 71 to support the rotation of the connecting gear 74 and the worm gear 75. A worm 76 is also rotatably connected to the inner wall of the sliding rack 71, and the worm 76 is meshed with the worm gear 75. A transmission rod 77 is fixedly connected to the outer wall of the worm 76, and a rotating handle 78 is fixedly connected to the outer wall of the transmission rod 77. The connecting gear 74 drives the sliding rack 71 to slide up and down by rotating. The legs of the adjusting base 1 can be extended and retracted, allowing the sliding rack 71 to extend and retract, thereby driving the adjusting base 1 to slide.

[0025] Specifically, the connection between the worm 76 and the worm wheel 75 allows the worm 76 to drive the worm wheel 75 to rotate in one direction, preventing the worm wheel 75 from causing the worm 76 to reverse when it is not under force.

[0026] As can be seen from the above, when this device is needed, firstly, by turning the handle 78, the transmission rod 77 and the worm 76 are rotated, causing the worm 76 to rotate the worm wheel 75. The rotation of the worm wheel 75 will cause the connecting gear 74 to rotate, causing the connecting gear 74 to slide up and down with the sliding rack 71. The sliding rack 71 will move up and down with the top support plate 6 through the fixed base 7, making it convenient to adjust the height of the device. After the height is adjusted, by adjusting the position of the hinge rod 3, the adjustable staircase 4 can be easily supported, allowing the adjustable staircase 4 to be adjusted to the corresponding angle.

[0027] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0028] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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 mechanical connection or an electrical connection; 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 utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hand-cranked lifting platform ladder, characterized in that: The system includes an adjustable base (1), a top support plate (6) is installed at the top of the adjustable base (1), a baffle plate (2) is installed on the outer side wall of the top support plate (6), the baffle plate (2) is rotatably connected to the outer side wall of the top support plate (6), a hinge rod (3) is installed at the bottom of the outer side wall of the adjustable base (1), an adjustable staircase (4) is rotatably connected at the top of the outer side wall of the adjustable base (1), the adjustable staircase (4) is rotatably connected to the hinge rod (3), and a side wall baffle plate (5) is fixedly connected to the top of the adjustable staircase (4). An adjustment mechanism is provided between the adjustment base (1) and the top support plate (6). The adjustment mechanism includes a fixed base (7), which is installed at the bottom end of the top support plate (6). A sliding rack (71) is installed at the bottom end of the fixed base (7), and a storage box (72) is sleeved on the outside of the sliding rack (71).

2. The hand-cranked lifting platform ladder as described in claim 1, characterized in that: A connecting gear (74) is installed on the inner side of the storage box (72). The outer side wall of the connecting gear (74) is meshed with the sliding rack (71). A worm gear (75) is also provided on the inner side wall of the sliding rack (71).

3. The hand-cranked lifting platform ladder as described in claim 2, characterized in that: The inner walls of the worm gear (75) and the connecting gear (74) are rotatably connected to a connecting rod. The connecting rod is installed on the inner wall of the sliding rack (71) to support the rotation of the connecting gear (74) and the worm gear (75).

4. The hand-cranked lifting platform ladder as described in claim 3, characterized in that: The inner wall of the sliding rack (71) is also rotatably connected to a worm (76), which is also meshed with a worm wheel (75). The outer wall of the worm (76) is also fixedly connected to a transmission rod (77), and the outer wall of the transmission rod (77) is also fixedly connected to a rotating handle (78).

5. The hand-cranked lifting platform ladder as described in claim 4, characterized in that: The connecting gear (74) drives the sliding rack (71) to slide up and down by rotating. The legs of the adjusting base (1) can extend and retract, allowing the sliding rack (71) to extend and retract, thus driving the adjusting base (1) to slide.

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