Lifting device of load lifting platform

Abstract

The utility model provides a lifting device of a load lifting platform, which comprises a rack, a load platform and a lifting mechanism, the load platform and the lifting mechanism are arranged on the rack, the lifting mechanism comprises a plurality of first transmission chains, and the upper ends and the lower ends of the first transmission chains are fixedly connected with the upper side and the lower side of the rack respectively; the loading platform is respectively provided with a plurality of groups of symmetrically arranged first transmission chain wheels corresponding to the first transmission chains, and the first transmission chains sequentially wind around the first transmission chain wheels and are meshed with the first transmission chain wheels; a driving motor is arranged on the loading platform, and one first transmission chain wheel is connected with the output end of the driving motor. The lifting device of the load lifting platform has the advantages of being scientific in design, stable in lifting, small in no-load and heavy-load height error and the like, and is suitable for lifting and transporting goods in various factories.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting mechanism, specifically to a lifting device of heavy lifting platform. BACKGROUND

[0002] In order to facilitate the goods lifting transportation in factory area, the factory usually sets up goods elevator or lifting platform for production. For example: China patent CN217323263U discloses a large heavy lifting scissor type lifting platform, China patent CN119797216A discloses a kind of building machinery material elevator for easy use etc. However, the lifting range of scissor type lifting platform in China patent CN217323263U is limited by scissor structure, and the lower limit position of scissor mechanism will also rise with the higher upper limit height of lifting;The material elevator structure of China patent CN119797216A is to set lifting pulley on the top of heavy lifting platform, and the stability of the lifting mechanism is poor, and the problem of goods position not being centered is more serious.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. UTILITY MODEL CONTENT

[0004] The utility model aims at the deficiency of prior art, and provides a kind of lifting device of heavy lifting platform.

[0005] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0006] A kind of lifting device of heavy lifting platform, including rack, heavy lifting platform and lifting mechanism set on rack, lifting mechanism includes several first transmission chains, the upper end and the lower end of first transmission chain are fixedly connected with the upper side and the lower side of rack respectively;Heavy lifting platform corresponds each first transmission chain and is provided with several groups of symmetrically arranged first transmission sprocket, and first transmission chain is sequentially wound through each first transmission sprocket and is engaged with each first transmission sprocket;Driving motor is provided on heavy lifting platform, and one of first transmission sprocket is connected with the output end of driving motor.

[0007] First transmission sprocket includes main drive sprocket and driven sprocket, the bottom of heavy lifting platform is provided with two transmission shafts, and second transmission sprocket is arranged on two transmission shafts respectively, and two second transmission sprockets are connected by second transmission chain between two second transmission sprockets, and second transmission chain is annular chain;The output end of driving motor and one of transmission shafts are drivingly connected, and transmission shaft is drivingly connected with main drive sprocket on the both sides of heavy lifting platform respectively.

[0008] The main transmission sprocket is provided with a one-way limiting mechanism on each side, and the main transmission sprocket is in transmission connection with the transmission shaft; the one-way limiting mechanism comprises a ratchet wheel and a pawl corresponding to the ratchet wheel, the pawl and the ratchet wheel are in engagement, and the transmission shaft is in threaded connection with the ratchet wheel; the sidewall of the ratchet wheel is provided with a friction plate corresponding to the main transmission sprocket.

[0009] The transmission shaft is provided with a guide wheel at each end, and a vertical rail is arranged on the rack, and the guide wheels move up and down along the vertical rail.

[0010] The vertical rail is an H-shaped steel, and the guide wheels are tangent to the inner wall of the H-shaped steel.

[0011] The load platform is in overall cubic structure, the lower side of the load platform extends an installation plate, the transmission shaft is in rotary connection with the installation plate, and the side of the load platform extends an installation shaft, and the installation shaft is in rotary connection with the transmission sprocket.

[0012] Compared with the prior art, the lifting device of the load lifting platform has the advantages of scientific design, stable lifting, small height error under no load and heavy load, and is suitable for cargo lifting and transportation in various factory areas. Specifically, the load platform is provided with a plurality of symmetrical sprockets engaged with the chain on the rack, and under the driving of the motor, the sprocket rotates to drive the load platform to lift, which is stable during lifting and is not easy to tilt, and the height error under no load and heavy load is small. In addition, the guide wheel and the H-shaped steel are arranged in cooperation to further improve the stability during lifting. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the utility model.

[0014] Figure 2 is a bottom view structural schematic diagram of the utility model.

[0015] Figure 3 is a side view structural schematic diagram of the lifting mechanism in the utility model.

[0016] Figure 4 is a partial enlarged schematic diagram of the utility model. Figure 1

[0017] In the figure: 1. rack; 2. first transmission chain; 3. first transmission sprocket; 4. second transmission sprocket; 5. load platform; 6. driving motor; 7. transmission shaft; 8. second transmission chain; 9. main transmission sprocket; 10. slave transmission sprocket; 11. ratchet wheel; 12. pawl; 13. friction plate; 14. guide wheel. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be further described in detail through specific embodiments. ​

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0020] like Figures 1-4 As shown, a lifting device for a load-bearing lifting platform includes a frame 1, a load-bearing platform 5 mounted on the frame 1, and a lifting mechanism. The lifting mechanism includes several first transmission chains 2. Referring to the attached diagram, each first transmission chain is elongated, and its upper and lower ends are fixedly connected to the upper and lower sides of the frame 1, respectively. The load-bearing platform 5 is provided with several symmetrically arranged first transmission sprockets 3 corresponding to each first transmission chain 2. Each first transmission chain 2 sequentially passes around and meshes with each first transmission sprocket 3. A drive motor 6 is mounted on the load-bearing platform 5, and one of the first transmission sprockets 3 is connected to the output end of the drive motor 6. Specifically, in this embodiment, four first transmission chains are provided, and four sets of first transmission sprockets are also provided accordingly.

[0021] The lifting device of this heavy-duty lifting platform has advantages such as scientific design, smooth lifting, and small height error under no-load and heavy-load conditions, making it suitable for lifting and transporting goods in various factory areas. Specifically, the heavy-duty platform is equipped with multiple sets of symmetrical sprockets that mesh with chains on the frame. Driven by a motor, the sprockets rotate, thereby raising and lowering the heavy-duty platform. This not only ensures a stable lifting process and reduces the likelihood of tilting, but also minimizes height error under no-load and heavy-load conditions.

[0022] In one embodiment, the first transmission sprocket 3 includes a main transmission sprocket 9 and a driven transmission sprocket 10. Two transmission shafts 7 are provided at the bottom of the load platform 5, and a second transmission sprocket 4 is provided on each of the two transmission shafts 7. The two second transmission sprockets 4 are connected by a second transmission chain 8, which is a ring chain. The output end of the drive motor 6 is connected to one of the transmission shafts 7. The transmission shafts 7 are respectively connected to the main transmission sprockets 9 on both sides of the load platform 5, so that the drive motor can drive the first transmission sprocket.

[0023] In one of the embodiments, the main transmission sprocket 9 is provided with a one-way limiting mechanism on both sides, the main transmission sprocket 9 is in transmission connection with the transmission shaft 7, the one-way limiting mechanism comprises a ratchet wheel 11 and a pawl 12 corresponding to the ratchet wheel 11, the pawl 12 and the ratchet wheel 11 are engaged, the transmission shaft 7 is in threaded connection with the ratchet wheel 11; the side wall of the ratchet wheel 11 is provided with a friction plate 13 corresponding to the main transmission sprocket 9. Specifically, the one-way limiting mechanism adopts the common one-way limiting mode of ratchet wheel and pawl in the prior art, and the working principle is the prior art, for example: a maintenance elevator disclosed in Chinese patent CN213326617U.

[0024] In one of the embodiments, the transmission shaft 7 is provided with a guide wheel 14 at both ends, a vertical rail is arranged on the rack 1, and the guide wheel 14 moves up and down along the vertical rail, further improving the stability of the lifting process.

[0025] In one of the embodiments, the vertical rail is an H-shaped steel, and the guide wheel 14 is tangent to the inner wall of the H-shaped steel.

[0026] In one of the embodiments, the load platform 5 is a cubic structure as a whole, the lower side of the load platform 5 extends an installation plate, the transmission shaft 7 and the installation plate are in rotary connection, the side of the load platform 5 extends an installation shaft, and the transmission sprocket 10 and the installation shaft are in rotary connection, facilitating the assembly of the sprocket.

[0027] The above embodiments can be combined with each other.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them; although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific implementation of the utility model can be modified or some technical features can be replaced equivalently; without departing from the spirit of the technical solutions of the utility model, they should be covered in the technical solution range of the utility model claimed by the utility model.

Claims

1. A hoisting device of a load lifting platform, comprising a frame, a load platform arranged on the frame and a hoisting mechanism, characterized in that: The lifting mechanism comprises a plurality of first transmission chains, upper ends and lower ends of the first transmission chains are fixedly connected with upper sides and lower sides of the rack respectively, the load platform is provided with a plurality of groups of symmetrically arranged first transmission sprockets corresponding to each first transmission chain, the first transmission chains pass through each first transmission sprocket in turn and are meshed with each first transmission sprocket, and the load platform is provided with a driving motor, one of the first transmission sprockets is connected with an output end of the driving motor.

2. The hoisting device of a load elevator according to claim 1, characterized in that The first transmission sprocket comprises a main transmission sprocket and a slave transmission sprocket, the bottom of the load platform is provided with two transmission shafts, the two transmission shafts are respectively provided with second transmission sprockets, the two second transmission sprockets are connected through a second transmission chain, the second transmission chain is an annular chain, the output end of the driving motor is in transmission connection with one of the transmission shafts, and the transmission shafts are in transmission connection with the main transmission sprockets on the two sides of the load platform.

3. The hoisting device of a load elevator according to claim 2, characterized in that The two sides of the main transmission sprocket are respectively provided with one-way limiting mechanisms, the main transmission sprocket is in transmission connection with the transmission shaft, the one-way limiting mechanism comprises a ratchet wheel and a pawl corresponding to the ratchet wheel, the pawl is in meshing connection with the ratchet wheel, the transmission shaft is in screw connection with the ratchet wheel, and the side wall of the ratchet wheel is provided with a friction plate corresponding to the main transmission sprocket.

4. The hoisting arrangement of claim 3, wherein: The two ends of the transmission shaft are respectively provided with guide wheels, the rack is provided with a vertical rail, and the guide wheels move up and down along the vertical rail.

5. The hoisting arrangement of claim 4, wherein: The vertical rail is an H-shaped steel, and the guide wheels are tangent to the inner wall of the H-shaped steel.

6. The hoisting arrangement of claim 5, wherein: The load platform is in a cubic structure as a whole, the lower side of the load platform extends out a mounting plate, the transmission shaft is in rotary connection with the mounting plate, and the side of the load platform extends out a mounting shaft, and the transmission sprocket is in rotary connection with the mounting shaft.

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