Heavy load lifting and shifting machine

Abstract

The utility model relates to technical fields especially relates to a heavy load jacking moves the carrier, including host frame, controller, lift frame, conveying roller, bearing seat and transmission shaft etc., be equipped with lift frame on host frame, the right side of lift frame front part is installed with the controller, the left and right sides of lift frame upper portion are all horizontally arranged type rotationally connected with conveying roller, the both sides of host frame top are all horizontally arranged type installed with a plurality of bearing seat, and the transmission shaft is rotationally sleeved between horizontal corresponding bearing seat. The utility model discloses a structure that motor drive transmission shaft drives cam follower to rotate in the guiding connecting plate, realizes the accurate linear lifting movement of rotation movement. Cam profile can be designed according to need, thereby can set up and adjust jacking stroke flexibly, overcomes the fixed eccentric wheel lifting mechanism stroke of prior art's shortcoming, reaches the effect that can adapt to the accurate requirement of different finishing process to jacking height.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a heavy-duty lifting and transferring machine. Background Technology

[0002] Hot-rolled ribbed steel bars are a key material in building and engineering structures. After rolling, the semi-finished product requires finishing processes, including cooling, straightening, and length-cutting. In this finishing process, a lifting and transferring mechanism is essential for efficiently and smoothly transferring groups of steel bars to different work lines or conveying equipment. The core function of this mechanism is to smoothly lift the steel bar group from its current position and precisely transfer it to the subsequent work station via roller conveyors. The stability and reliability of its operation directly affect the production efficiency of the finishing line and the surface quality of the finished steel bars.

[0003] For example, the lifting chain finishing table disclosed in CN201020527753 includes a roller conveyor, a finishing table, and a chain track. The roller conveyor is driven by a roller drive with pulleys. The chain track consists of chains perpendicular to the roller conveyor and arranged on the lifting bars of the finishing table. A motor drives a drive shaft, and a sprocket on the drive shaft drives the chains. The roller conveyor has concave inlets for the chains to insert into the roller conveyor. An eccentric wheel is provided at the lower end of the finishing table. The eccentric wheel is driven by a motor and drives the lifting of the finishing table to form a lifting device for the finishing table. Although... The aforementioned comparative document has the advantages of convenient and quick rebar classification, high production efficiency, and neat and non-twisted finished rebar. However, the lifting stroke of the eccentric wheel in this structure is fixed and cannot be adjusted, lacking flexibility and making it difficult to adapt to the precise requirements of different finishing processes for the lifting height. Its lifting guide relies solely on the eccentric wheel itself, which is prone to jamming or tilting of the finishing table when subjected to eccentric load, affecting stability. Furthermore, the entire transmission chain structure is complex, involving multiple stages of transmission such as motor, eccentric wheel, and finishing table, occupying a large space and with scattered maintenance points, which restricts the improvement of equipment reliability and maintenance efficiency.

[0004] Therefore, there is an urgent need for a heavy-duty lifting and transferring machine. Utility Model Content

[0005] In order to overcome the shortcomings of existing eccentric wheel lifting mechanisms, such as fixed and non-adjustable stroke, poor resistance to eccentric loads, and poor maintainability due to complex transmission chains, this utility model provides a heavy-duty lifting and transferring machine.

[0006] Technical Solution: A heavy-duty lifting and transferring machine includes a main frame, a controller, a lifting frame, conveyor rollers, bearing seats, a drive shaft, a cam follower, a guide connecting plate, a motor, a sprocket drive assembly, a mounting plate, a proximity sensor, and a sensing plate. The lifting frame is mounted on the main frame. The controller is fixedly installed on the front right side of the lifting frame. Conveyor rollers are horizontally arranged and rotatably connected to the upper left and right sides of the lifting frame. Multiple bearing seats are horizontally arranged and fixedly installed on the front and rear sides of the top of the main frame. A drive shaft is rotatably sleeved between corresponding horizontal bearing seats. A cam follower is fixedly installed on the right end of the drive shaft. Each cam follower on the lifting frame is fixedly connected to a guide connecting plate, and the cam follower slides with the corresponding guide connecting plate. A motor is fixedly installed on the right side of the middle of the lifting frame, and the motor has a reducer. A sprocket drive group is provided between the two drive shafts and the motor output shaft through a chain coupling. A mounting plate is fixedly sleeved on the left side of the rear drive shaft. The upper left and right sides of the mounting plate are slidably connected to proximity sensors through arc-shaped sliding grooves. A sensing plate is rotatably sleeved on the right side of the rear drive shaft at the proximity sensor. The controller is electrically connected to the motor, proximity sensor and sensing plate.

[0007] In addition, it is particularly preferred that the main frame also includes guide supports, with guide supports symmetrically distributed and fixedly installed on both the left and right sides of the top of the main frame.

[0008] In addition, it is particularly preferred that the lift also includes guide wheels, with guide wheels distributed in a front-to-back rotatable manner on both the left and right sides of the lower part of the lift frame, and each guide wheel slidingly engaging with a corresponding guide support.

[0009] Furthermore, it is particularly preferred that the front proximity sensor is equipped with a low-point sensor and the rear proximity sensor is equipped with a high-point sensor.

[0010] Furthermore, it is particularly preferred that the conveyor rollers be made of high-cobalt hard alloy.

[0011] In addition, it is particularly preferred that the bottom of the main frame is provided with multiple support legs.

[0012] In addition, it is particularly preferred that the lifting frame is made of high-strength steel.

[0013] Furthermore, it is particularly preferred that the cam follower is made of high-carbon chromium bearing steel.

[0014] This utility model has the following advantages: 1. By employing a structure where a motor drives a transmission shaft through a sprocket transmission group, thereby causing a cam follower to rotate within a guide connecting plate, this utility model achieves the conversion of rotational motion into precise linear lifting motion. The cam profile can be designed as needed, allowing for flexible setting and adjustment of the lifting stroke. This overcomes the shortcomings of existing eccentric wheel lifting mechanisms where the stroke is fixed and cannot be adjusted, achieving the effect of adapting to the precise lifting height requirements of different finishing processes.

[0015] 2. This utility model provides stable auxiliary support and forced guidance for the lifting process by setting guide wheels at the lower part of the lifting frame and rolling them along the track of the guide support on the main frame. This design overcomes the shortcomings of the prior art, which relies solely on the eccentric wheel itself for guidance and has poor resistance to eccentric loads. It achieves the effect of ensuring the smooth vertical movement of the lifting frame even under heavy load or eccentric load conditions, effectively preventing jamming or tilting.

[0016] 3. This utility model integrates the motor, sprocket drive assembly, drive shaft, and cam follower into a simple transmission system, replacing the complex transmission chain composed of a motor, eccentric wheel, and multi-stage connecting rods. This integrated design overcomes the shortcomings of existing technologies where complex transmission chains lead to poor maintainability, achieving the effects of compact structure, high transmission efficiency, and easy maintenance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is an exploded view of the bearing housing, drive shaft, and motor components of this utility model.

[0019] Figure 3 This is an exploded view of the lifting frame, guide wheels, and conveyor rollers of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the guide support, lifting frame, and guide wheels of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the mounting plate, proximity sensor, and sensing plate of this utility model.

[0022] The above-mentioned figures include the following reference numerals: 1. Main frame, 101. Controller, 2. Guide support, 3. Lifting frame, 4. Guide wheel, 5. Conveyor roller, 6. Bearing seat, 7. Drive shaft, 71. Cam follower, 72. Guide connecting plate, 8. Motor, 9. Chain drive assembly, 10. Mounting plate, 11. Proximity sensor, 12. Sensing plate. Detailed Implementation

[0023] Example: A heavy-duty lifting and transferring machine, such as Figure 1-5As shown, the system includes a main frame 1, a controller 101, a lifting frame 3, conveyor rollers 5, bearing seats 6, a drive shaft 7, a cam follower 71, a guide connecting plate 72, a motor 8, a sprocket drive assembly 9, a mounting plate 10, a proximity sensor 11, and a sensing plate 12. The lifting frame 3 is mounted on the main frame 1. The lifting frame 3 is made of high-strength steel. The controller 101 is fixedly mounted on the front right side of the lifting frame 3. Conveyor rollers 5, made of high-cobalt hard alloy, are horizontally arranged and rotatably connected to the upper left and right sides of the lifting frame 3. Multiple bearing seats 6, made of high-cobalt hard alloy, are horizontally arranged and fixedly mounted on the top front and rear sides of the main frame 1. A drive shaft 7 is rotatably fitted between corresponding horizontal bearing seats 6. A cam follower 71, made of high-carbon chromium bearing steel, is fixedly mounted on the right end of the drive shaft 7. The corresponding bearing seats 6 on the lifting frame 3... Each cam follower 71 is fixedly connected to a guide connecting plate 72, and each cam follower 71 slides in cooperation with the corresponding guide connecting plate 72. A motor 8 is fixedly installed on the right side of the middle part of the lifting frame 3, and the motor 8 is equipped with a reducer. A sprocket drive group 9 is provided between the two drive shafts 7 and the output shaft of the motor 8 through a chain coupling. A mounting plate 10 is fixedly sleeved on the left side of the rear drive shaft 7. The upper left and right sides of the mounting plate 10 are slidably connected to proximity sensors 11 through arc-shaped sliding grooves. A low point sensor is provided on the front proximity sensor 11, and a high point sensor is provided on the rear proximity sensor 11. A sensing plate 12 is rotatably sleeved on the right side of the rear drive shaft 7 at the proximity sensor 11. The controller 101 is electrically connected to the motor 8, the proximity sensor 11 and the sensing plate 12. Multiple support feet are provided at the bottom of the main frame 1.

[0024] like Figure 2 and Figure 4 As shown, it also includes guide supports 2. The guide supports 2 are installed on the left and right sides of the top of the main frame 1 in a symmetrical manner and are installed by screws.

[0025] like Figures 3-4 As shown, it also includes guide wheels 4. The lower left and right sides of the lifting frame 3 are connected to guide wheels 4 in a front-to-back distributed rotational manner. The guide wheels 4 are all slidably engaged with the corresponding guide supports 2. The guide supports 2 provide guidance and limit functions for the guide wheels 4.

[0026] When this device is needed, the material is first placed on the conveyor roller 5, and then the motor 8 is started via the controller 101. The motor 8 transmits power to the sprocket drive group 9 through its own reducer. The sprocket drive group 9 synchronously transmits the rotational motion to the two drive shafts 7, enabling them to rotate synchronously. The rotation of the drive shaft 7 drives the cam follower 71 fixed to its right end to rotate together. The cam follower 71 is in close contact with and slides against the contour of the corresponding guide connecting plate 72. As the cam follower 71 continues to rotate, its special contour acts on the guide connecting plate 72, converting the rotational motion into linear lifting motion, thereby driving the entire lifting frame 3 and all its components to make vertical displacement relative to the main frame 1. During this process, the guide wheel 4 rolls along the track of the guide supports 2 fixed to the left and right sides of the top of the main frame 1, providing guidance and limiting for the lifting motion of the lifting frame 3, ensuring the linear accuracy of the motion. The equipment achieves precise control of the lifting height stroke through the induction plate 12 and the proximity sensor 11. The sensing plate 12 rotates with the drive shaft 7 and passes sequentially past the proximity sensor 11, which detects different positions of the sensing plate 12. When the sensing plate 12 rotates to a predetermined angle and triggers the high-point sensor, the signal is immediately fed back to the controller 101. The controller 101 then sends a stop command to the motor 8, the drive shaft 7 stops rotating, and the cam follower 71 stops at a specific phase. At this time, the lifting frame 3 accurately reaches the preset lifting position. After the lifting frame 3 is stably in the lifting position, the conveyor roller 5 starts to rotate under the drive of external power, transferring the material placed on it to the next station or process. After completing the transfer task, the controller 101 restarts the motor 8, driving the drive shaft 7 and the cam follower 71 to rotate in the opposite direction. The lifting frame 3 begins to descend under the action of gravity or mechanical reaction force. When the sensing plate 12 rotates to trigger the low-point sensor on the proximity sensor 11, the signal is sent back to the controller 101, and the controller 101 commands the motor 8 to stop. At this time, the lifting frame 3 accurately returns to the initial low position, and a complete work cycle ends.

Claims

1. A heavy-duty lifting and transferring machine, characterized in that: The system includes a main frame (1), a controller (101), a lifting frame (3), conveyor rollers (5), bearing seats (6), a drive shaft (7), a cam follower (71), a guide connecting plate (72), a motor (8), a sprocket drive assembly (9), a mounting plate (10), a proximity sensor (11), and a sensing plate (12). The main frame (1) is equipped with a lifting frame (3). The controller (101) is installed on the front right side of the lifting frame (3). Conveyor rollers (5) are horizontally arranged and rotatably connected on both the left and right sides of the upper part of the lifting frame (3). Multiple bearing seats (6) are horizontally arranged on both the front and rear sides of the top of the main frame (1). A drive shaft (7) is rotatably fitted between the horizontally corresponding bearing seats (6). A cam follower (71) is installed on the right end of the drive shaft (7). (3) A guide connecting plate (72) is connected to the corresponding cam follower (71). The cam follower (71) slides with the corresponding guide connecting plate (72). A motor (8) is installed on the right side of the middle part of the lifting frame (3). The motor (8) is equipped with a reducer. A sprocket drive group (9) is provided between the two drive shafts (7) and the output shaft of the motor (8) through a chain coupling. A mounting plate (10) is sleeved on the left side of the rear drive shaft (7). A proximity sensor (11) is slidably connected to the upper left and right sides of the mounting plate (10) through an arc-shaped sliding groove. A sensing plate (12) is rotatably sleeved on the right side of the rear drive shaft (7) at the proximity sensor (11). The controller (101) is electrically connected to the motor (8), the proximity sensor (11) and the sensing plate (12).

2. The heavy-duty lifting and transferring machine as described in claim 1, characterized in that: It also includes guide supports (2), and guide supports (2) are symmetrically distributed on the left and right sides of the top of the main frame (1).

3. A heavy-duty lifting and transferring machine as described in claim 2, characterized in that: It also includes guide wheels (4). The lower left and right sides of the lifting frame (3) are connected to guide wheels (4) in a front-to-back distributed rotation. The guide wheels (4) are all in sliding cooperation with the corresponding guide supports (2).

4. A heavy-duty lifting and transferring machine as described in claim 3, characterized in that: A low-point sensor is provided on the front proximity sensor (11), and a high-point sensor is provided on the rear proximity sensor (11).

5. A heavy-duty lifting and transferring machine as described in claim 4, characterized in that: The conveyor roller (5) is made of high cobalt hard alloy.

6. A heavy-duty lifting and transferring machine as described in claim 5, characterized in that: The main frame (1) has multiple support legs at the bottom.

7. A heavy-duty lifting and transferring machine as described in claim 6, characterized in that: The lifting frame (3) is made of high-strength steel.

8. A heavy-duty lifting and transferring machine as described in claim 7, characterized in that: The cam follower (71) is made of high carbon chromium bearing steel.

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