Lifting mechanism

Abstract

The utility model belongs to the technical field of lifting mechanisms, and particularly relates to a lifting mechanism which comprises a foundation track, a lifting platform located at one end of the foundation track, supports located on the two sides of the lifting platform and a lifting assembly installed on the supports and driving the lifting platform to ascend and descend. The lifting platform is provided with a platform track in butt joint with the foundation track. The lifting assembly is used for driving the lifting platform to descend to the platform track to be in butt joint with the foundation track and driving the lifting platform to ascend to the preset height to stop after the material loading trolley moves to the platform track along the foundation track. The lifting platform is matched with an external cutting mechanism to cut a workpiece, the rail of the lifting platform is in butt joint with the foundation rail, the material carrying trolley moves to the lifting platform from the foundation rail, the lifting platform is driven to ascend and descend through a speed reducer and a worm and gear structure, the movement stability is high, and the lifting platform is suitable for driving the large-mass workpiece to move.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting mechanisms, and more specifically, relates to a lifting mechanism. Background Art

[0002] During the production and manufacturing process, it is necessary to cut workpieces. The existing cutting process is to manually place the workpieces at the designated cutting points through manual operation. For workpieces with large mass, small lifting cranes are also needed to transport the workpieces to the designated cutting points. The labor intensity is high and the work efficiency is very low, resulting in low cutting quality.

[0003] Therefore, a lifting mechanism that can solve the above problems is needed. Summary of the Utility Model

[0004] Aiming at the defects of the prior art, the utility model provides a lifting mechanism. By controlling the lifting of the lifting platform, the trolley carrying the workpiece on the lifting platform is driven to move up and down, and cooperating with an external cutting mechanism, the cutting of the workpiece is realized. The lifting platform is provided with platform tracks for docking and transferring with the foundation tracks, so that the material-carrying trolley can move from the foundation tracks to the lifting platform. The lifting platform is driven to lift through a reducer, a transmission rod and a worm and worm gear structure, with high movement stability and suitable for driving workpieces with large mass.

[0005] The utility model provides a lifting mechanism, including foundation tracks, a lifting platform located at one end of the foundation tracks, supports located on both sides of the lifting platform, and lifting components installed on the supports and driving the lifting platform to lift;

[0006] The lifting platform is provided with platform tracks for docking with the foundation tracks; the lifting components are used to drive the lifting platform to descend until the platform tracks are docked with the foundation tracks, and after the material-carrying trolley moves along the foundation tracks to the platform tracks, drive the lifting platform to rise to a predetermined height and stop.

[0007] Furthermore, there are 2 supports and 2 foundation tracks. The 2 supports are installed on the fixed platform at intervals. The lifting platform is located between the 2 supports and is arranged adjacent to one end of the 2 foundation tracks. There are 2 lifting components, and each lifting component is correspondingly installed on 1 support.

[0008] Furthermore, the plane projection trajectory lines of the platform tracks and the foundation tracks are located on the same straight line.

[0009] Further, each of the lifting components includes a motor, a speed reducer, a transmission rod, and a lifting seat; the speed reducer is installed on the top of the support, the speed reducer has an input end and two output ends, the motor is connected to the input end of the speed reducer, there are 2 transmission rods, one end of each transmission rod is correspondingly connected to the two output ends of the speed reducer, and the other end of each transmission rod is meshed and connected to 1 lifting seat respectively.

[0010] Further, the transmission rod and the lifting seat adopt worm and worm wheel transmission.

[0011] Further, the lifting seat includes a worm connected to the transmission rod and a worm wheel meshed with the worm.

[0012] Further, each of the lifting components further includes a lead screw; the worm wheel of the lifting seat is sleeved on the lead screw, and the bottom of the lead screw is fixedly connected to the lifting platform.

[0013] Further, the lifting platform is of a rectangular structure, connection bodies are symmetrically arranged on the outer sides of the four corners of the rectangular structure, and each connection body is fixedly connected to the bottom of 1 lead screw respectively; a plurality of vertical guide rails are arranged on the support, and each connection body is slidably connected to the corresponding vertical guide rail.

[0014] Further, a damping rubber pad is arranged at the bottom of the connection body.

[0015] Further, the speed reducer adopts a two-way output speed reducer.

[0016] The beneficial effects of the present utility model are as follows:

[0017] First, the lifting platform and the foundation track of the present utility model are provided with docking platform tracks, so that the trolley carrying the workpiece moves along the foundation track to the designated position of the track of the lifting platform for cutting process, and then returns to the foundation track along the track of the lifting platform after cutting, which shortens the production line, makes the overall structure compact, effectively saves the production and manufacturing space, drives the trolley carrying the workpiece to move up and down through the lifting component, and the external cutting mechanism does not need to move, and only needs to control the lifting platform to realize the cutting of the workpiece, with simple manufacturing and high movement stability;

[0018] Second, in the preferred implementation mode, the lead screw and the lifting seat of the present utility model adopt worm and worm wheel power transmission, which has a large torque and reverse locking function. During the lifting process, when the motor stops or fails, it can ensure that the transmission rod is located at the current movement position of the lifting seat, prevent the lifting platform from sliding down, and avoid the workpiece from falling and damaging the lifting equipment;

[0019] Thirdly, in the preferred implementation, there are 2 lifting components in the present utility model. Each lifting component includes 2 lead screws. Connection bodies are symmetrically arranged on the outer sides of the four corners of the lifting platform. The 4 connection bodies are respectively connected to the 4 lead screws. Through 4-point fixation, and at the same time, vertical guide rails are arranged on the outer sides of the 4 lead screws, so that the lifting platform has high movement stability during the ascending and descending processes and always maintains a horizontal posture, avoiding workpiece skew during the process of cutting the workpiece. Since the lifting components are fixed on the supports, and the supports are positioned with the platform through the guide rails, there will be no jitter.

[0020] Fourthly, in the preferred implementation, a damping rubber pad is arranged at the bottom of the connection body of the present utility model to prevent the hard contact between the lifting platform and the ground when it descends. Brief Description of the Drawings

[0021] Figure 1 is a three-dimensional structure diagram of the lifting mechanism of the embodiment of the present utility model;

[0022] Figure 2 is Figure 1 a partial enlarged view of A in

[0023] Figure 3 is Figure 1 a partial enlarged view of B in

[0024] Wherein, 1 - support; 2 - foundation track; 3 - lifting platform; 30 - platform track; 31 - connection body; 4 - lead screw; 5 - motor; 6 - reducer; 7 - transmission rod; 8 - lifting seat. Detailed Embodiment

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present application, the following will further elaborate on the present application in detail with reference to the drawings and embodiments.

[0026] The orientation terms such as up, down, left, right, front and back in the present application document are based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationships may also change accordingly. Therefore, it cannot be understood as a limitation to the protection scope.

[0027] In the present application, the terms "installation", "connection", "engagement", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection or a connection that can communicate with each other, a direct connection, an indirect connection through an intermediate medium, a connection inside two components, or an interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] Refer to the attached drawings of the specificationFigures 1-3 The utility model records a lifting mechanism, including a fixed platform, a foundation track 2 installed on the fixed platform, a lifting platform 3 located at one end of the foundation track 2, a support 1 located on both sides of the lifting platform 3, and a lifting component installed on the support 1 and driving the lifting platform 3 to move up and down.

[0029] The lifting platform 3 is provided with a platform track 30 which is docked with the foundation track 2. The lifting assembly is used to drive the lifting platform 3 down to the platform track 30 to dock with the foundation track 2, and after the loading trolley moves along the foundation track 2 to the platform track 30, it drives the lifting platform 3 carrying the loading trolley to rise to a predetermined height and stop.

[0030] Specifically, there are two supports 1 and two foundation rails 2. The two supports 1 are installed at intervals on the fixed platform. The two foundation rails 2 and the lifting platform 3 are located between the two supports 1. The two foundation rails 2 are set at intervals. The lifting platform 3 is set close to one end of the two foundation rails 2. The horizontal projection trajectory lines of the platform rail 30 and the foundation rail 2 are on the same straight line, so that when the lifting platform 3 descends to the specified position, the platform rail 30 and the foundation rail 2 are tightly connected.

[0031] There are two lifting assemblies, each of which is installed on a support 1. The lifting assembly includes a screw 4, a motor 5, a reducer 6, a transmission rod 7 and a lifting seat 8.

[0032] Reducer 6 is mounted on top of support 1 via a connecting block. It has one input and two outputs. It utilizes a bidirectional output reducer, comprising a power input shaft, a gear sleeved around one end of the power input shaft, a planetary reduction assembly meshing with the gear, a first shaft connected at one end to the output end of the planetary reduction assembly, a first bevel gear sleeved around the other end of the first shaft, second and third bevel gears meshing with both ends of the first bevel gear, and second and third shafts connected to the second and third bevel gears, respectively. The second and third shafts are coaxially arranged as the power output shaft of reducer 6.

[0033] The output shaft of the motor 5 is drivingly connected to the power input shaft of the reducer 6, which is used to drive the reducer 6 to rotate. There are two transmission rods 7, one end of each transmission rod 7 is respectively mounted on the second and third rotating shafts of the reducer 6 through a coupling, and the other end of each transmission rod 7 is meshed with a lifting seat 8.

[0034] The lifting seat 8 is connected in a worm gear structure, and the lifting seat 8 includes a housing, a worm mounted inside the housing, and a worm wheel meshing with the worm. The worm is connected to the transmission rod 7 through a coupling, and the inner ring of the worm wheel is provided with trapezoidal teeth.

[0035] The lead screw 4 is a trapezoidal lead screw, which is vertically arranged. The worm gear of the lifting seat 8 is sleeved on the lead screw 4, and the bottom of the lead screw 4 is fixedly connected to the lifting platform 3.

[0036] Furthermore, the lifting platform 3 is of a rectangular structure, and connecting bodies 31 are symmetrically arranged on the outer sides of the four corners of this rectangular structure. Each connecting body 31 is fixedly connected to the bottom of one lead screw 4, and the tops of the four lead screws 4 are connected to the worm gears of the corresponding lifting seats 8.

[0037] Preferably, a damping rubber pad is arranged at the bottom of the connecting body 31 to prevent the hard contact between the lifting platform 3 and the fixed platform of the lifting mechanism when the lifting platform 3 descends.

[0038] Furthermore, a plurality of vertical guide rails are arranged on the support 1, and each connecting body 31 is slidably connected to the corresponding vertical guide rail to improve the stability of the ascending and descending movements of the lifting platform.

[0039] The working principle of the lifting mechanism of the present utility model:

[0040] Firstly, the motor 5 drives the reducer 6 to rotate. The reducer 6 drives the transmission rod 7 to rotate. The transmission rod 7 drives the worm and worm gear transmission inside the lifting seat 8. The worm gear of the lifting seat 8 drives the lead screw 4 to move up and down. The motor 5 controls the lead screw 4 to rise or fall according to different clockwise and counterclockwise rotation directions. During the descending process of the four lead screws 4, the whole lifting platform 3 descends stably. When it descends to the preset position, the platform track 30 is connected to the foundation track 2, and the loading trolley travels along the foundation track 2 onto the platform track 30. When it travels to the designated position, the loading trolley is fixedly parked on the lifting platform 3. Then the motor 5 rotates in the opposite direction to control the four lead screws 4 to slowly rise, and the loading trolley slowly rises synchronously with the lifting platform 3. There is a workpiece to be cut on the loading trolley. An external workpiece cutting mechanism is arranged for the lifting mechanism. As the lifting platform 3 slowly rises, it cooperates with the cutting mechanism to complete the cutting of the workpiece.

[0041] The above are only the embodiments of the present utility model. Common knowledge such as the specific structures and characteristics known in the solutions is not described in detail here. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A lifting mechanism, characterized in that, It includes a foundation track (2), a lifting platform (3) located at one end of the foundation track (2), supports (1) located on both sides of the lifting platform (3), and a lifting assembly installed on the supports (1) and driving the lifting platform (3) to move up and down. A platform track (30) docked with the foundation track (2) is provided on the lifting platform (3); the lifting assembly is used to drive the lifting platform (3) to descend until the platform track (30) is docked with the foundation track (2), and after the material-loading trolley moves along the foundation track (2) to the platform track (30), drive the lifting platform (3) to rise to a predetermined height and stop.

2. The lifting mechanism according to claim 1, wherein There are 2 supports (1) and 2 foundation tracks (2). The 2 supports (1) are installed on the fixed platform at intervals. The lifting platform (3) is located between the 2 supports (1). The lifting platform (3) is arranged adjacent to one end of the 2 foundation tracks (2). There are 2 lifting assemblies, and each lifting assembly is correspondingly installed on 1 support (1).

3. The lifting mechanism according to claim 2, characterized in that, The plane projection trajectory lines of the platform track (30) and the foundation track (2) are located on the same straight line.

4. The lifting mechanism according to claim 2, wherein, Each lifting assembly includes a motor (5), a speed reducer (6), a transmission rod (7) and a lifting seat (8); the speed reducer (6) is installed on the top of the support (1). The speed reducer (6) has one input end and two output ends. The motor (5) is connected to the input end of the speed reducer (6). There are 2 transmission rods (7). One end of each transmission rod (7) is correspondingly connected to the two output ends of the speed reducer (6), and the other end of each transmission rod (7) is meshed and connected to 1 lifting seat (8).

5. The lifting mechanism according to claim 4, wherein The transmission rod (7) and the lifting seat (8) adopt worm and worm gear transmission.

6. The lifting mechanism according to claim 5, characterized in that, The lifting seat (8) includes a worm connected to the transmission rod (7) and a worm gear meshed with the worm.

7. The lifting mechanism according to claim 6, wherein Each lifting assembly further includes a lead screw (4); the worm gear of the lifting seat (8) is sleeved on the lead screw (4), and the bottom of the lead screw (4) is fixedly connected to the lifting platform (3).

8. The lifting mechanism according to claim 7, characterized in that, The lifting platform (3) is of a rectangular structure. Connection bodies (31) are symmetrically arranged on the outer sides of the four corners of the rectangular structure. Each connection body (31) is fixedly connected to the bottom of 1 lead screw (4); a plurality of vertical guide rails are provided on the support (1), and each connection body (31) is slidably connected to the corresponding vertical guide rail.

9. The lifting mechanism according to claim 8, characterized in that, A damping rubber pad is provided at the bottom of the connection body (31).

10. The lifting mechanism according to claim 4, characterized in that, The speed reducer (6) adopts a two-way output speed reducer.

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