Double-motor four-chain lifting mechanism

Abstract

The utility model discloses a double-motor four-chain lifting mechanism, which relates to the technical field of lifting mechanisms and comprises a fixed frame, a lifting frame and two groups of oppositely arranged driving mechanisms. The driving mechanism comprises an output shaft, a bearing seat and a transmission chain wheel group; the transmission chain wheel group comprises a driving chain wheel, a driven chain wheel, a rotary chain, a lifting chain and a chain wheel seat; the bearing seat and the sprocket seat are arranged at the upper end of the mechanism mounting frame, the output shaft is rotatably mounted on the bearing seat, the driving sprocket is fixedly mounted on the output shaft, and the driven sprocket is rotatably mounted on the sprocket seat. A rotary chain is connected with the two chain wheels to form a closed-loop transmission system, two ends of the rotary chain are connected through chain connecting blocks, and a chain tensioner is arranged on the inner side of the lifting frame. The driving device drives the output shaft to rotate and drives the lifting frame to move up and down along the fixed frame. The mechanism is transversely installed to save longitudinal space, a four-chain transmission structure disperses loads, system stability and reliability are improved, and safety risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a double-motor four-chain lifting mechanism. Background Art

[0002] In the current field of industrial automation, as a key device, the lifting mechanism is widely used in various material handling, production line automation and specific places. With the rapid development of the new energy vehicle industry, as an important infrastructure for electric vehicle energy replenishment, the efficient utilization of the internal space of the battery swapping station and the improvement of the rapid battery swapping technology have become the focus of the industry's attention.

[0003] At present, the lifting mechanisms applied to battery swapping stations mostly adopt a single-motor single-chain structure. In the process of lifting large or heavy objects, this structure often has greater problems such as insufficient power and poor stability. Moreover, in a specific environment such as a battery swapping station, due to the need to frequently and quickly lift and lower heavy objects such as battery packs, and the space resources are extremely precious, the existing lifting mechanisms are difficult to meet the requirements of high efficiency, compactness and stability.

[0004] Therefore, there is an urgent need for a new type of lifting mechanism that can achieve efficient and stable lifting in a limited space. Summary of the Utility Model

[0005] The main technical problem to be solved by the utility model is to provide a double-motor four-chain lifting mechanism. The driving mechanism is horizontally installed, which can greatly save the longitudinal distance and realize the lifting of heavy objects in a compact space. The four-chain transmission structure effectively disperses the load, improves the overall stability and reliability of the system, and reduces the safety risks caused by faults such as the breakage of a single chain.

[0006] To solve the above technical problem, a technical solution adopted by the utility model is:

[0007] A double-motor four-chain lifting mechanism, comprising a fixed frame, a lifting frame and a driving mechanism. The lifting frame is slidably connected to the inner side of the fixed frame. The upper end of the fixed frame includes a mechanism mounting frame for installing the lifting mechanism. There are two groups of the driving mechanisms arranged on the same plane, and the two groups of the driving mechanisms are arranged in opposite directions.

[0008] The driving mechanism includes an output shaft, a bearing seat, and a transmission sprocket set; the transmission sprocket set includes a driving sprocket, a driven sprocket, a rotary chain, a lifting chain, and a sprocket seat. The bearing seat and the sprocket seat are respectively arranged at two ends of the upper end of the mechanism mounting frame. The output shaft is rotatably installed in the bearing seat, the driving sprocket is fixedly installed on the output shaft, the driven sprocket is rotatably installed in the sprocket seat, the driving sprocket is connected to the driven sprocket through the rotary chain, and both ends of the rotary chain are connected through a chain connecting block. A chain tensioner is arranged inside the lifting frame, one end of the lifting chain is connected to the chain connecting block, and the other end is connected to the chain tensioner; the driving device drives the output shaft to rotate to enable the transmission sprocket set to drive the lifting frame to move up and down along the fixed frame.

[0009] Further, slide rails are arranged in the inner side of the fixed frame in the height direction. A connecting seat is arranged at the top of the lifting frame. A slider is arranged on one side of the connecting seat facing the slide rail, and the slider is slidably connected to the slide rail.

[0010] Further, a sensor assembly is further included. The sensor assembly includes a high-position sensor and a low-position sensor, and an induction piece is correspondingly arranged on the connecting seat.

[0011] Further, a limiting block is arranged on the outer side of the lifting frame.

[0012] Further, two sets of transmission sprocket sets of each driving mechanism are symmetrically arranged, and the sprocket set of one driving mechanism is arranged between the two sprocket sets of the other driving mechanism.

[0013] Further, the driving device includes a driving motor. The output end of the driving motor is connected with a speed reducer, and the output end of the speed reducer is connected to the output shaft.

[0014] The beneficial technical effects of the present utility model are:

[0015] First, through the structural design of double motors and four chains, the power output of the lifting mechanism is significantly enhanced. The double motors work synchronously, which can not only effectively improve the speed of lifting heavy objects, but also maintain a more stable operation state during the lifting process, effectively avoiding the problems of insufficient power and jitter of the single-motor single-chain structure under heavy loads. It is more suitable for occasions such as battery swapping stations that require efficient and stable lifting of heavy objects such as battery packs.

[0016] Second, the structural design with the drive mechanism installed horizontally greatly saves the longitudinal space, enabling the entire lifting mechanism to function within a compact space. This is more suitable for places with limited space such as battery swap stations. The double-motor and four-chain drive structure effectively distributes the load, improves the overall stability and reliability of the system, and reduces the safety risks caused by faults such as single-chain breakage.

[0017] Third, the mechanism integrates a sensor assembly, including a high-position sensor and a low-position sensor, which can monitor the position status of the lifting frame in real time. When the lifting frame reaches the preset high or low position, the sensor will immediately send a signal to achieve automatic stop or deceleration through the control system, effectively preventing safety accidents caused by overtravel or out-of-control. In addition, the design of the limit block also provides additional safety protection for the system, further reducing the fault risk.

[0018] Fourth, in addition to being applicable to new energy vehicle battery swap stations, this lifting mechanism can also be widely used in other occasions that require efficient and stable lifting of heavy objects. For example, in scenarios such as material handling on industrial production lines and cargo stacking in warehousing and logistics centers, this lifting mechanism can play its unique advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is Figure 1 another perspective of

[0021] Figure 3 is the structural schematic diagram of the drive mechanism of the present utility model (including the mechanism mounting frame);

[0022] Figure 4 is Figure 3 another perspective of

[0023] Figure 5 is the structural schematic diagram of the single-side drive mechanism (excluding the mechanism mounting frame and the rotary chain);

[0024] Figure 6 is the structural schematic diagram of the fixed frame (excluding the mechanism mounting frame);

[0025] Figure 7 is the connection structural schematic diagram of the fixed frame and the lifting frame (excluding the mechanism mounting frame and the drive mechanism);

[0026] Figure 8 is the structural schematic diagram of the lifting frame;

[0027] The markings of each part in the drawings are as follows:

[0028] Reference numerals:

[0029] 1. Fixed frame; 11. Mechanism mounting frame; 12. Slide rail;

[0030] 2. Lifting frame; 21. Chain tensioner; 22. Connecting seat; 221. Slide block; 222. Inductive sheet; 23. Limit block;

[0031] 3. Driving mechanism; 31. Output shaft; 32. Bearing seat; 33. Driving sprocket; 34. Driven sprocket; 35. Rotary chain; 351. Guide sprocket; 36. Lifting chain; 37. Sprocket seat; 38. Chain connecting block; 39. Driving device; 391. Driving motor; 392. Reducer;

[0032] 4. Sensor assembly; 41. High - level sensor; 42. Low - level sensor. Specific implementation mode

[0033] In order to be able to more clearly understand the technical means of the present utility model and implement it in accordance with the content of the specification, the following combines the drawings and embodiments to further describe in detail the specific implementation mode of the present utility model. The following embodiments are used to illustrate the present utility model, but do not limit the scope of the present utility model.

[0034] This specific embodiment discloses in detail a double - motor four - chain lifting mechanism, as Figures 1 to 8 shown, including a fixed frame 1, a lifting frame 2 and two sets of oppositely arranged driving mechanisms 3. These components work together to achieve efficient, stable and compact heavy - object lifting in a limited space.

[0035] Inside the fixed frame 1, slide rails 12 are installed along the height direction. These slide rails provide stable guidance and support for the lifting frame 2. A connecting seat 22 is provided at the top of the lifting frame 2. On the side of the connecting seat facing the slide rail, a slide block 221 is installed. The slide block is slidably connected to the slide rail 12 to ensure the smooth movement of the lifting frame in the vertical direction. In addition, a limit block 23 is installed on the outside of the lifting frame 2. The limit block is equivalent to a program fault protection. When the lifting frame reaches the preset low position, it will abut against the upper surface of the lower load - bearing frame (not shown in the drawings) to prevent it from moving further down and play a limiting role.

[0036] Each set of drive mechanisms includes an output shaft 31, a bearing block 32, a transmission sprocket set, and a drive device 39. The output shaft is mounted on the mechanism mounting frame 11 through the bearing block, and the transmission sprocket set includes a driving sprocket 33, a driven sprocket 34, a rotary chain 35, a lifting chain 36, and a sprocket seat 37. The driving sprocket is fixedly mounted on the output shaft, and the driven sprocket is mounted on the sprocket seat. The rotary chain connects these two sprockets to form a closed-loop drive system, and one end of the lifting chain is connected to the chain connecting block 38 at the connection of both ends of the rotary chain. To maintain the tension of the chain, a chain tensioner 21 is also installed inside the lifting frame and connected to the other end of the lifting chain. The chain tensioner 21 can automatically adjust according to the slack degree of the chain to ensure the stability and reliability of the transmission. The transmission sprocket set also includes a guiding sprocket 351, which is rotatably mounted at the upper end of the fixed frame and is cooperatively connected with the rotary chain.

[0037] In terms of the drive device, this mechanism adopts a dual-motor synchronous drive method. The output end of each drive motor 391 is connected with a speed reducer 392, and the output end of the speed reducer is then connected to the output shaft. This design not only improves the smoothness of power output but also enables the entire lifting mechanism to still maintain strong power and a stable operating state under heavy loads.

[0038] To achieve real-time monitoring and control of the position of the lifting frame, the present utility model also sets up a sensor assembly 4. This assembly includes a high-position sensor 41 and a low-position sensor 42, which are respectively installed at appropriate positions on the fixed frame. An induction piece 222 is correspondingly arranged on the connecting seat 22. When the lifting frame moves to the preset high or low position, the induction piece will trigger the corresponding sensor, thereby sending a signal to the control system. After receiving the signal, the control system will immediately execute corresponding actions, such as stopping lifting or decelerating descent, etc., to ensure the safety and stability of the system.

[0039] In summary, the dual-motor four-chain lifting mechanism of the present utility model has the advantages of compact structure, strong power, stable operation, safety, and reliability. It can not only meet the requirements of efficiently and stably lifting heavy objects in space-limited places such as new energy vehicle battery swap stations but also be widely applied to other industrial fields that require heavy object lifting.

[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0041] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A double-motor four-chain lifting mechanism, characterized in that: It includes a fixed frame (1), a lifting frame (2) and a driving mechanism (3). The lifting frame is slidably connected to the inner side of the fixed frame. The upper end of the fixed frame includes a mechanism mounting bracket (11) for mounting the driving mechanism. There are two groups of the driving mechanisms arranged in the same plane, and the two groups of the driving mechanisms are arranged oppositely. The driving mechanism includes an output shaft (31), a bearing seat (32) and a transmission sprocket set. The transmission sprocket set includes a driving sprocket (33), a driven sprocket (34), a rotary chain (35), a lifting chain (36) and a sprocket seat (37). The bearing seat and the sprocket seat are respectively arranged at both ends of the upper end of the mechanism mounting bracket. The output shaft is rotatably mounted on the bearing seat. The driving sprocket is fixedly mounted on the output shaft. The driven sprocket is rotatably mounted on the sprocket seat. The driving sprocket is connected to the driven sprocket through the rotary chain, and both ends of the rotary chain are connected through a chain connecting block (38). A chain tensioner (21) is arranged on the inner side of the lifting frame. One end of the lifting chain is connected to the chain connecting block, and the other end is connected to the chain tensioner. A driving device (39) drives the output shaft to rotate to enable the transmission sprocket set to drive the lifting frame to move up and down along the fixed frame.

2. The double-motor four-chain lifting mechanism according to claim 1, wherein: A slide rail (12) is arranged in the inner side of the fixed frame in the height direction. A connecting seat (22) is arranged at the top of the lifting frame. A slider (221) is arranged on one side of the connecting seat facing the slide rail. The slider is slidably connected to the slide rail.

3. The double-motor four-chain lifting mechanism according to claim 2, wherein: It further includes a sensor assembly (4). The sensor assembly includes a high-position sensor (41) and a low-position sensor (42). An induction piece (222) is correspondingly arranged on the connecting seat.

4. A double-motor four-chain lifting mechanism according to claim 3, characterized in that: A limiting block (23) is arranged on the outer side of the lifting frame.

5. A double-motor four-chain lifting mechanism according to claim 1, characterized in that: Two groups of the transmission sprocket sets of each driving mechanism are symmetrically arranged. The sprocket set of one driving mechanism is arranged between the two sprocket sets of the other driving mechanism.

6. A double-motor four-chain lifting mechanism according to claim 1, characterized in that: The driving device includes a driving motor (391). The output end of the driving motor is connected to a speed reducer (392). The output end of the speed reducer is connected to the output shaft.

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