Lifting device with chain drive

Abstract

This utility model relates to the field of lifting equipment technology, specifically disclosing a lifting device with a chain transmission mechanism. The inner walls of the frame are vertically provided with guide rail grooves. Upper and lower rotating shafts are rotatably installed between the top and bottom walls of the frame, with upper and lower sprockets fixedly fitted near their respective ends. The lifting platform includes a lifting frame, guide wheels rotatably installed on the top and bottom of the two side walls of the lifting frame and rolling along the guide rail grooves, adjusting pulleys slidably engaged with the top and bottom ends of the two side walls of the lifting frame in a horizontal direction, and tensioning screws for adjusting the horizontal position of the adjusting pulleys. The outer end of the adjusting pulleys is provided with rollers that roll vertically along the inner wall of the guide rail groove. Chains are connected between the top and bottom ends of the two side walls of the lifting frame, with the top and bottom of the chains passing over the upper and lower sprockets respectively. A power component for driving the upper rotating shaft is provided at the top of the frame. This design effectively solves the problems of unstable movement and inconvenient leveling of the lifting platform in lifting equipment.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a lifting device with a chain transmission mechanism. Background Technology

[0002] In locations such as thermal power plants, smelters, cement plants, ports, and mines, bulk materials such as coal, coke, and ore are often transported by train. Bulk materials transported by train are generally unloaded using tippers. When a tipper is in operation, the heavily loaded cars entering the tipper must be separated from the cars behind them before the tipping operation can begin. The separation of the train cars is typically performed by uncoupling equipment, and after unloading, recoupling equipment is used to re-couple them. In practice, both the uncoupling and recoupling equipment need to be mounted on a lifting device for easy vertical adjustment.

[0003] In practical applications, existing lifting equipment often has the following drawbacks: The equipment is difficult to maintain stable lifting and lowering for extended periods in high dust concentration working environments.

[0004] Lifting platforms are prone to swaying left and right during the lifting process.

[0005] The level of the lifting platform is not easy to adjust. Utility Model Content

[0006] The purpose of this utility model is to provide a lifting device with a chain drive mechanism to solve the problem that the lifting platform in current lifting equipment is difficult to move smoothly and is not easy to adjust horizontally.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lifting device with a chain drive mechanism, comprising a frame and a lifting platform. The inner walls of the frame are vertically provided with guide rail grooves. An upper rotating shaft and a lower rotating shaft are rotatably mounted between the top and bottom walls of the frame. Lower sprockets and upper sprockets are respectively fixedly fitted near their respective ends on the lower and upper rotating shafts. The lifting platform includes a lifting frame, guide wheels rotatably mounted on the top and bottom of the two side walls of the lifting frame and rolling along the guide rail grooves, adjusting pulleys slidably engaged with the top and bottom ends of the two side walls of the lifting frame in a horizontal direction, and tensioning screws for adjusting the horizontal position of the adjusting pulleys. The outer end of the adjusting pulleys is provided with rollers that roll vertically along the inner wall of the guide rail grooves. Chains are connected between the top and bottom ends of the two side walls of the lifting frame, with the top and bottom ends of the chains passing over the upper and lower sprockets respectively. A power component for driving the upper rotating shaft to rotate is provided at the top of the frame.

[0008] Preferably, the lifting frame has locking blocks on both sides of its top and bottom ends, the adjusting pulley includes a C-shaped part, the inner end of the C-shaped part is slidably engaged with the locking block in the horizontal direction, the two ends of the roller's central shaft are respectively rotatably sleeved on the front and rear walls of the outer end of the C-shaped part's inner cavity, the middle part of the inner wall of the C-shaped part is provided with a threaded hole that matches the threaded engagement of the tensioning screw, and the end of the tensioning screw is rotatably sleeved on the locking block.

[0009] Preferably, a worm gear reducer is fixed in the middle of the top surface of the inner cavity of the frame, and a motor with a power output shaft fixedly connected to the worm of the worm gear reducer is fixed on the rear wall of the worm gear reducer. The middle part of the upper rotating shaft is fixedly sleeved in the central cavity of the worm wheel of the worm gear reducer.

[0010] Preferably, the top surface of the C-shaped component is provided with an elongated hole extending laterally, and the top surface of the elevator is provided with a positioning screw hole corresponding to the elongated hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model relates to a lifting device with a chain transmission mechanism, which drives the lifting platform to move vertically up and down through sprockets and chains, eliminating the need for complex steering mechanisms and saving equipment space. In addition, the chain transmits power through the meshing of chain links and sprockets, which has the advantage of being less prone to slippage compared to belt drives, and can maintain a precise movement trajectory and speed. The metal chain has a compact structure, low friction loss during transmission, and high transmission efficiency, so as to ensure that the lifting equipment can work for a long time in complex working conditions such as high dust, oil, high and low temperatures, and has a long maintenance cycle.

[0012] 2. In the lifting device with chain transmission mechanism involved in this utility model, the guide wheel cooperates with the guide rail groove, and the roller in the adjusting pulley contacts the inner wall of the rail groove. By adjusting the adjusting pulley to slide horizontally along the lifting frame, it is easy to adjust the overall horizontal state of the lifting platform, thereby making it easy to ensure that the entire lifting platform can move vertically stably. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the lifting platform of this utility model; Figure 4 This is a three-dimensional structural diagram of the adjusting pulley of this utility model.

[0014] In the diagram: 1-Frame; 1.1-Guide rail groove; 2-Lower rotating shaft; 2.1-Lower sprocket; 3-Upper rotating shaft; 3.1-Upper sprocket; 4- Worm gear reducer; 5-Motor; 6-Lifting platform; 6.1-Lifting frame; 6.1.1-Clamping block; 6.2-Guide wheel; 6.3-Adjusting pulley; 6.3.1-C-shaped part; 6.3.2-Roller; 6.3.3-Threaded hole; 6.4-Tensioning screw; 7-Chain. Detailed Implementation

[0015] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a lifting device with a chain transmission mechanism, wherein guide rail grooves 1.1 are provided vertically on both sides of the inner cavity of the frame 1, and an upper rotating shaft 3 and a lower rotating shaft 2 are rotatably installed between the two sides of the top and bottom of the frame 1, and a lower sprocket 2.1 and an upper sprocket 3.1 are respectively fixedly fitted near the two ends of the lower rotating shaft 2 and the upper rotating shaft 3.

[0017] The lifting platform 6 includes a lifting frame 6.1, guide wheels 6.2 rotatably mounted on the top and bottom of both sides of the lifting frame 6.1 and rolling along the guide rail groove 1.1, adjusting pulleys 6.3 slidably engaged with the top and bottom of both sides of the lifting frame 6.1 in the horizontal direction, and tensioning screws 6.4 for adjusting the horizontal position of the adjusting pulleys 6.3. The adjusting pulley 6.3 has a roller 6.3.2 at its outer end that rolls vertically along the inner wall of the guide rail groove 1.1. The lifting frame 6.1 has locking blocks 6.1.1 on both sides of its top and bottom ends. The adjusting pulley 6.3 includes a C-shaped part 6.3.1, the inner end of which slides horizontally into the locking block 6.1.1. The roller 6.3.2's central shaft ends are rotatably fitted onto the front and rear walls of the outer end of the C-shaped part 6.3.1's inner cavity. The C-shaped part 6.3.1 has a threaded hole 6.3.3 in the middle of its inner wall that matches the threaded engagement of the tension screw 6.4, and the end of the tension screw 6.4 is rotatably fitted onto the locking block 6.1.1. This allows for easy adjustment of the horizontal sliding position of the C-shaped part 6.3.1 relative to the locking block 6.1.1 by rotating the tension screw 6.4, thus facilitating the overall horizontal adjustment of the lifting platform 6. To further secure the adjusted pulley 6.3, the top surface of the C-shaped component 6.3.1 has an elongated hole extending laterally, and the top surface of the lifting frame 6.1 has a corresponding positioning screw hole. Fastening bolts are installed in the elongated hole and the positioning screw hole to firmly fix the C-shaped component 6.3.1 to the lifting frame 6.1. The rear wall of the lifting frame 6.1 is used to assemble and connect the unhooking equipment, rehooking equipment, and other working parts. The bottom of the frame 1 is also equipped with a traveling mechanism to facilitate the horizontal movement of the frame 1 carrying the working parts along the ground rail platform.

[0018] Chains 7 are connected between the top and bottom ends of both sides of the lifting frame 6.1. The top and bottom ends of the chains 7 pass over the upper sprocket 3.1 and the lower sprocket 2.1, respectively. A power component that drives the upper rotating shaft 3 to rotate is provided on the top of the frame 1. A worm gear reducer 4 is fixed in the middle of the top surface of the inner cavity of the frame 1. A motor 5 is fixed to the rear wall of the worm gear reducer 4, with the power output shaft fixedly connected to the worm of the worm gear reducer 4. The middle part of the upper rotating shaft 3 is fixedly sleeved in the center cavity of the worm wheel of the worm gear reducer 4. The motor 5 is a servo motor. The motor 5 drives the upper rotating shaft 3 to rotate through the worm gear reducer 4. The upper rotating shaft 3 drives the entire chain transmission mechanism to rotate through the upper sprocket 3.1, so that the lifting platform 6 moves up and down under the guidance of the guide wheel 6.2 and the roller 6.3.2.

[0019] It should be noted that in this article, relational terms such as first and second are only used to refer to... Distinguishing one entity or operation from another does not necessarily require or imply any such actual relationship or order between those entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting device with a chain drive mechanism, comprising a frame (1) and a lifting platform (6), characterized in that: The inner walls of the frame (1) are provided with guide rail grooves (1.1) in the vertical direction. The upper rotating shaft (3) and the lower rotating shaft (2) are rotatably installed between the two side walls at the top and bottom of the frame (1). The lower rotating shaft (2) and the upper rotating shaft (3) are respectively fixedly fitted with a lower sprocket (2.1) and an upper sprocket (3.1) near their respective ends. The lifting platform (6) includes a lifting frame (6.1), guide wheels (6.2) rotatably mounted on the top and bottom of both sides of the lifting frame (6.1) and rolling along the guide rail groove (1.1), adjusting pulleys (6.3) slidably engaged with the top and bottom of both sides of the lifting frame (6.1) in the horizontal direction, and tensioning screws (6.4) for adjusting the horizontal position of the adjusting pulleys (6.3). The outer end of the adjusting pulleys (6.3) is provided with rollers (6.3.2) that roll vertically along the inner wall of the guide rail groove (1.1). Chains (7) are connected between the top and bottom ends of the two sides of the lifting frame (6.1), and the top and bottom ends of the chains (7) pass over the upper sprocket (3.1) and the lower sprocket (2.1) respectively. The top of the frame (1) is provided with a power component that drives the upper rotating shaft (3) to rotate.

2. A lifting device with a chain drive mechanism according to claim 1, characterized in that: The lifting frame (6.1) has locking blocks on both sides of its top and bottom ends. 6.1.1), the adjusting pulley (6.3) includes a C-shaped part (6.3.1), the inner end of the inner cavity of the C-shaped part (6.3.1) is slidably engaged with the locking block (6.1.1) in the horizontal direction, the two ends of the central shaft of the roller (6.3.2) are respectively rotatably sleeved on the front and rear walls of the outer end of the inner cavity of the C-shaped part (6.3.1), the middle part of the inner side wall of the C-shaped part (6.3.1) is provided with a threaded hole (6.3.3) that matches the threaded engagement of the tensioning screw (6.4), and the end of the tensioning screw (6.4) is rotatably sleeved on the locking block (6.1.1).

3. A lifting device with a chain drive mechanism according to claim 1, characterized in that: A worm gear reducer (4) is fixed in the middle of the top surface of the inner cavity of the frame (1). A motor (5) with a power output shaft fixed to the rear wall of the worm gear reducer (4) is fixedly connected to the worm of the worm gear reducer (4). The middle part of the upper rotating shaft (3) is fixedly sleeved in the worm wheel center cavity of the worm gear reducer (4).

4. A lifting device with a chain drive mechanism according to claim 2, characterized in that: The top surface of the C-shaped component (6.3.1) is provided with an elongated hole extending laterally, and the top surface of the lifting frame (6.1) is provided with a positioning screw hole corresponding to the elongated hole.

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