A lifting platform anti-falling mechanism
By designing a fall-proof mechanism including hook outer plate, hook inner plate, intermediate clamp and chain fixture fixing plate, the problem of insufficiently sensitive fall-proof device in the prior art is solved, and a more effective fall-proof effect is achieved.
Patent Information
- Application Number
- CN202421478192.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The chain and hook of the existing lifting platform anti-falling device are integrated mechanisms and are not easy to rotate, resulting in insufficient protection movement and ineffective prevention of falling.
An anti-fall mechanism including hook outer plate, hook inner plate, intermediate clamp and chain fixing plate is designed. The gap is formed through the intermediate clamp, so that the chain fixing plate can rotate freely, and the sensitivity of anti-falling action is improved.
It realizes that the anti-falling action is sufficiently sensitive when falling, which can effectively prevent the falling of the lifting and lowering work platform, significantly improving the anti-falling effect.
Smart Images
Figure CN222744031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting equipment, in particular to an anti-falling mechanism for a lifting work platform. Background Art
[0002] A lifting platform is a lifting machine that transports people or objects vertically. It also refers to equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often equipped with various flat conveying equipment as a connecting device for conveyor lines at different heights. The free lifting characteristics of the lifting platform have been widely used in municipal maintenance, cargo transportation at docks and logistics centers, construction and other fields. For large projects and high-rise buildings, the use of construction lifting platforms is particularly important; it can greatly improve productivity and save labor time. People's comprehensive requirements for the performance, efficiency, load capacity, energy saving, maintenance and other aspects of the lift are also getting higher and higher. When the lift is lifting, a mechanical brake device needs to be used to ensure lifting safety and prevent the platform from falling accidentally.
[0003] In order to prevent the lifting platform from accidentally falling due to mechanical failure or other reasons, relevant technicians have developed some anti-fall devices. However, these anti-fall devices generally use a plate to weld a chain fixing sleeve, and the anti-fall chain itself has a certain rigidity and is not easy to twist, resulting in the chain and the hook body being an integrated mechanism and not easy to rotate. When a fall occurs, the protection action is not sensitive enough and the purpose and effect of anti-fall cannot be achieved. Utility Model Content
[0004] In order to solve the above problems, the inventor has developed a fall prevention mechanism for a lifting work platform based on his rich experience in the field of lifting equipment technology.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lifting work platform anti-falling mechanism, including a lifting work platform body and an anti-falling mechanism, the anti-falling mechanism is movably connected to the lifting work platform body, the anti-falling mechanism includes a hook outer plate, a hook inner plate, an intermediate splint and a chain clamp fixing plate, the lifting work platform body is provided with a first rotating pin, the hook outer plate is connected to the lifting work platform body through the first rotating pin, the outer side surface of the hook outer plate is welded to the inner side surface of the intermediate splint, the outer side surface of the intermediate splint is welded to the inner side surface of the hook inner plate, the chain clamp fixing plate is movably connected to the hook outer plate and the hook inner plate, and the lifting work platform body is also provided with a limit block for limiting the rotation of the hook outer plate.
[0006] Furthermore, a rectangular slot is provided on the upper half of the chain clamp fixing plate, a first connecting hole is provided on the lower half of the chain clamp fixing plate, the bottom of the chain clamp fixing plate is semicircular, the hook outer plate is in a "Z" shape, a second connecting hole and a third connecting hole are respectively provided at both ends of the hook outer plate, a fourth connecting hole is provided at one end of the hook inner plate, and a second rotating pin is inserted into the fourth connecting hole, the second connecting hole and the first connecting hole.
[0007] Furthermore, one end of the hook outer plate close to the second connecting hole is flat, and one end of the hook outer plate close to the third connecting hole is cone-shaped, and the third connecting hole is connected to the lifting work platform body through a first rotating pin.
[0008] Furthermore, due to the arrangement of the middle clamping plate, a gap is formed between the hook outer plate and the hook inner plate, and the chain clamp fixing plate can rotate freely in the gap.
[0009] Furthermore, the first connection hole, the second connection hole, the third connection hole and the fourth connection hole have the same hole diameter.
[0010] Furthermore, the chain used by the lifting work platform is installed in a chain clamp, and the chain clamp is connected to the rectangular slot by welding.
[0011] Furthermore, the limit block is made of carbon steel and is welded to the lifting work platform body.
[0012] The inventors need to explain that, in the present application document, the outer side refers to the side facing the operator, and the inner side refers to the side facing away from the operator.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model combines the hook outer plate, the hook inner plate and the middle plate into one piece, and the middle plate is located between the hook outer plate and the hook inner plate. Due to the setting of the middle plate, a gap is formed between the hook outer plate and the hook inner plate, and the gap allows the chain clamp fixing plate to rotate freely. When a fall occurs, the anti-fall action of the utility model is sensitive enough, and can achieve a better anti-fall purpose and effect.
[0014] The utility model has a simple structure and is easy to manufacture, and can be widely used in the fields of building construction, municipal maintenance, docks, logistics center cargo transportation, etc., and can create better economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the hook outer plate.
[0016] Figure 2 Schematic diagram of the hook inner plate.
[0017] Figure 3 Schematic diagram of the middle splint.
[0018] Figure 4 Schematic diagram of the chain clamp fixing plate.
[0019] Figure 5 It is the front view of the utility model.
[0020] Figure 6 It is a left view of the utility model.
[0021] Figure 7 It is a schematic diagram of the combination of the hook outer plate and the first rotating pin.
[0022] Figure 8 This is a schematic diagram of the utility model when the chain is not broken.
[0023] Fig. 9 It is a schematic diagram of the use of the utility model when the chain is broken.
[0024] Legend: 1. Hook outer plate, 101. Second connecting hole, 102. Third connecting hole, 2. Hook inner plate, 201. Fourth connecting hole, 3. Middle splint, 4. Chain clamp fixing plate, 401. Rectangular slot, 402. First connecting hole, 5. Lifting work platform body, 6. Chain, 7. Limit block, 8. First rotating pin, 9. Second rotating pin. DETAILED DESCRIPTION
[0025] The embodiments of the present patent are described in detail below. In the description of the present patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present patent.
[0026] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0027] like Figure 1-9As shown, a lifting work platform anti-falling mechanism includes a lifting work platform body 5 and an anti-falling mechanism, the anti-falling mechanism is movably connected to the lifting work platform body 5, the anti-falling mechanism includes a hook outer plate 1, a hook inner plate 2, an intermediate splint 3 and a chain clamp fixing plate 4, the lifting work platform body 5 is provided with a first rotating pin 8, the hook outer plate 1 is connected to the lifting work platform body 5 through the first rotating pin 8, the outer side surface of the hook outer plate 1 is welded to the inner side surface of the intermediate splint 3, the outer side surface of the intermediate splint 3 is welded to the inner side surface of the hook inner plate 2, the chain clamp fixing plate 4 is movably connected to the hook outer plate 1 and the hook inner plate 2, and the lifting work platform body 5 is also provided with a limit block 7 for limiting the rotation of the hook outer plate 1.
[0028] In this embodiment, a rectangular slot 401 is provided on the upper half of the chain clamp fixing plate 4, a first connecting hole 402 is provided on the lower half of the chain clamp fixing plate 4, the bottom of the chain clamp fixing plate 4 is semicircular, the hook outer plate 1 is in a "Z" shape, and a second connecting hole 101 and a third connecting hole 102 are respectively provided at both ends of the hook outer plate 1, and a fourth connecting hole 201 is provided at one end of the hook inner plate 2, and a second rotating pin 9 is inserted into the fourth connecting hole 201, the second connecting hole 101 and the first connecting hole 402.
[0029] In this embodiment, the end of the hook outer plate 1 close to the second connection hole 101 is flat, and the end of the hook outer plate 1 close to the third connection hole 102 is cone-shaped. The third connection hole 102 is connected to the lifting work platform body 5 through the first rotating pin 8.
[0030] In this embodiment, due to the arrangement of the middle clamping plate 3, a gap is formed between the hook outer plate 1 and the hook inner plate 2, and the chain clamp fixing plate 4 can rotate freely in the gap.
[0031] In this embodiment, the first connection hole 402 , the second connection hole 101 , the third connection hole 102 and the fourth connection hole 201 have the same hole diameter.
[0032] In this embodiment, the chain 6 used in the lifting work platform is installed in a chain clip, and the chain clip is connected to the rectangular slot 401 by welding. Due to the limited length of the drawings, the chain clip is not drawn in the drawings of the specification, but this does not affect the understanding of the present application document by those skilled in the art. The chain clip is purchased from the market, and the technician only needs to find a chain clip of the same model as the rectangular slot 401.
[0033] In this embodiment, the material of the limit block 7 is carbon steel, and is welded to the lifting work platform body 5 .
[0034] In actual use, the utility model is installed on the chain clamp, and the chain is connected to the rectangular slot 401 by welding. When the chain is loose or broken, the chain clamp fixing plate 4 rotates around the gap formed between the hook outer plate 1 and the hook inner plate 2. At the same time, the hook outer plate 1 begins to rotate around the first rotating pin due to the influence of gravity, and the grab hook and the platform rotating pin will rotate. Under the action of the limit block 7, the grab hook outer plate 1 is prevented from rotating by the limit block 7, thereby achieving the purpose of preventing the lifting work platform body from falling. When the chain 6 is tightened, the grab hook outer plate 1 will be straightened, and the lifting work platform body will resume the rising and falling action.
[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A lifting platform anti-falling mechanism, characterized in that: It includes a lifting work platform body and an anti-falling mechanism, which is movably connected to the lifting work platform body. The anti-falling mechanism includes a hook outer plate, a hook inner plate, an intermediate splint and a chain clamp fixing plate. A first rotating pin is provided on the lifting work platform body, and the hook outer plate is connected to the lifting work platform body through the first rotating pin. The outer side surface of the hook outer plate is welded to the inner side surface of the intermediate splint, and the outer side surface of the intermediate splint is welded to the inner side surface of the hook inner plate. The chain clamp fixing plate is movably connected to the hook outer plate and the hook inner plate. A limit block for limiting the rotation of the hook outer plate is also provided on the lifting work platform body.
2. The anti-falling mechanism for a lifting work platform according to claim 1, characterized in that: A rectangular slot is provided on the upper half of the chain clamp fixing plate, a first connecting hole is provided on the lower half of the chain clamp fixing plate, the bottom of the chain clamp fixing plate is semicircular, the hook outer plate is "Z"-shaped, a second connecting hole and a third connecting hole are respectively provided at both ends of the hook outer plate, a fourth connecting hole is provided at one end of the hook inner plate, and a second rotating pin is inserted into the fourth connecting hole, the second connecting hole and the first connecting hole.
3. The anti-falling mechanism of a lifting work platform according to claim 2, characterized in that: One end of the hook outer plate close to the second connection hole is flat, and one end of the hook outer plate close to the third connection hole is cone-shaped. The third connection hole is connected to the lifting work platform body through a first rotating pin.
4. The anti-falling mechanism for a lifting work platform according to claim 2, characterized in that: Due to the arrangement of the middle clamping plate, a gap is formed between the hook outer plate and the hook inner plate, and the chain clamp fixing plate can rotate freely in the gap.
5. The anti-falling mechanism for a lifting work platform according to claim 2, characterized in that: The first connection hole, the second connection hole, the third connection hole and the fourth connection hole have the same hole diameter.
6. The anti-falling mechanism for a lifting work platform according to claim 1, characterized in that: The chain used by the lifting work platform is installed in a chain clamp, and the chain clamp is connected to the rectangular slot by welding.
7. The anti-falling mechanism for a lifting work platform according to claim 1, characterized in that: The material of the limit block is carbon steel and is welded to the lifting work platform body.