Heavy workpiece lifting system

Abstract

The utility model discloses a heavy workpiece lifting system which comprises a machine frame, a lifting workbench used for loading heavy workpieces is installed on the machine frame, and the lifting workbench is connected with a lifting driving assembly. The rack is further provided with a guide assembly used for guiding lifting of the lifting workbench. The lifting driving assembly and the guide assembly are arranged to lift a heavy workpiece, lifting stability is improved, and meanwhile horizontal movement of an air cylinder is converted into vertical lifting movement of the lifting workbench through cooperation of a horizontal sliding table, a rolling pulley and a sliding guide face in the lifting driving assembly. The occupied space of the lifting system is reduced, meanwhile, the power consumption of the air cylinder is reduced, and the problems that an existing heavy workpiece lifting system is large in occupied space and low in stability and accuracy are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a heavy workpiece lifting system. Background Art

[0002] Heavy-duty lifting systems are typically used to lift and move heavy workpieces or cargo, such as large machinery and heavy goods. These systems operate primarily based on hydraulic or pneumatic transmission principles. When the system receives a lift command, the power element activates, converting mechanical energy into hydraulic or pneumatic energy. Control elements then adjust the flow, pressure, and direction of the oil or gas, generating thrust or pull from the actuators to lift and move the workpiece.

[0003] Although the existing heavy workpiece lifting systems have met the needs of industrial production, construction and other fields for heavy workpiece lifting to a certain extent, they still have some defects, such as insufficient material strength or wear resistance, which may cause the system to experience wear, deformation and other problems during long-term use; or some systems may have unreasonable structural designs, with overly complex and redundant structures, resulting in reduced system efficiency; or the lifting system may have insufficient stability when lifting with heavy loads or at high speeds, causing the system to shake or tilt.

[0004] Especially for heavy workpieces such as large engine workpieces, the fixed-point assembly equipment for large engine workpieces requires a large amount of plane space, and the overall height of the lifting equipment is limited by the use environment. If the structural design is too complicated and has high space requirements, it cannot be suitable for all heavy workpieces.

[0005] Furthermore, the lifting process requires precise workpiece height. If stability issues occur during the lifting process, the lifting height accuracy of the workpiece can be easily affected. Currently, the power drive mechanism of a lifting system typically moves up and down to lift the workpiece, requiring high power and high system strength. Sufficient support is required to support heavy workpieces; otherwise, lifting stability cannot be guaranteed.

[0006] Chinese Patent No. 2023220395268 discloses an auxiliary tool for moving heavy workpieces, comprising a bracket for hoisting parts, the bottom end surface of the part being pre-opened with a bottom groove for easy grasping, the bottom of the bracket being provided with movable rollers, the upper portion of the bracket being provided with a support frame for hoisting parts, the top of the support frame being laterally provided with a hoisting rod, the end of the hoisting rod being connected to a gripper for hooking and clamping the parts. This utility model solves the problem of heavy parts being transported, which can only be hoisted using a gantry crane due to their weight. Hoisting using a gantry crane requires two or more skilled workers to operate, indirectly increasing labor costs. However, its structure is relatively complex, occupies a large space, and there is no guide system for positioning during the lifting process, which cannot guarantee the stability of the workpiece lifting and the accuracy of the lifting height. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a heavy workpiece lifting system, which can solve the problems of the existing heavy workpiece lifting system that the system occupies a large space and has low stability and accuracy.

[0008] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0009] A heavy workpiece lifting system comprises a frame, a lifting workbench for loading heavy workpieces is mounted on the frame, and the lifting workbench is connected to a lifting drive assembly; the frame is also mounted with a guide assembly for guiding the lifting workbench to move up and down.

[0010] The above-mentioned heavy workpiece lifting system, the lifting drive assembly includes a cylinder installed on the frame through a cylinder mounting seat, the cylinder is connected to the horizontal slide located under the lifting workbench, the slide is slidably connected to the slide rail on the frame, and a rolling pulley mounting seat for installing a rolling pulley is provided on the top of the slide; it also includes support platforms symmetrically arranged on both sides of the bottom of the lifting workbench, and the support platforms are provided with sliding guide surfaces that are slidably connected to the rolling pulley to facilitate lifting the workbench.

[0011] The above-mentioned heavy workpiece lifting system has the sliding guide surface tilted downward, and a support platform connected to the upper end of the sliding guide surface is provided with a bent in-situ slot that is equipped with a rolling pulley in the initial position, and the lower end of the sliding guide surface is connected to the horizontal surface of the support platform.

[0012] The above-mentioned heavy workpiece lifting system, the guide assembly includes guide columns arranged at the four corners of the bottom of the lifting workbench, the bottom of the guide column passes through the frame, and the top surface of the frame is provided with a guide sleeve that is slidably fitted with the guide column.

[0013] In the above-mentioned heavy workpiece lifting system, a positioning piece for positioning the workpiece is provided on the top surface of the lifting workbench.

[0014] The above-mentioned heavy workpiece lifting system is also provided with an in-position switch on the frame located on one side of the lifting workbench for detecting whether the workpiece is lifted into position; a detection column is installed on the frame, and a detection switch seat for installing the in-position switch is provided on the top of the detection column.

[0015] In the above-mentioned heavy workpiece lifting system, a height detection component for detecting the lifting height of the workbench is also provided under the lifting workbench; the height detection component includes a jacking detection block, a first proximity switch indicating that it has been lowered into place when corresponding to the jacking detection block, and a second proximity switch indicating that it has been raised into place when corresponding to the jacking detection block; the jacking detection block is arranged at the bottom end of the jacking detection rod, and the jacking detection rod is installed at the bottom of the lifting workbench; the second proximity switch and the first proximity switch are arranged side by side on the mounting bracket on the frame, and the mounting bracket is arranged close to the end of the lifting workbench where the jacking detection block is installed.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is as follows.

[0017] The utility model provides a heavy workpiece lifting system, which lifts the heavy workpiece by arranging a lifting drive component and a guide component, thereby improving the lifting stability. At the same time, the lifting drive component converts the horizontal movement of the cylinder into the vertical lifting movement of the lifting workbench through the cooperation of the horizontal slide, rolling pulley and sliding guide surface, thereby reducing the space occupied by the lifting system and the power consumption of the cylinder, thereby solving the problems of the existing heavy workpiece lifting system that the space occupied is large and the stability and accuracy are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the specific structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0020] Among them: 1. Frame, 2. Lifting workbench, 3. Support platform, 4. Guide column, 5. Guide sleeve, 6. Positioning piece, 7. Sliding guide surface, 8. Rolling pulley, 9. Rolling pulley mounting seat, 10. Sliding table, 11. Slide rail, 12. Cylinder, 13. Cylinder mounting seat, 14. In-situ slot, 15. Detection column, 16. Detection switch seat, 17. Lifting detection rod, 18. Lifting detection block. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] A heavy workpiece lifting system, such as Figures 1 to 2As shown, it includes a frame 1, on which a lifting workbench 2 for loading heavy workpieces is installed. The lifting workbench 2 is connected to a lifting drive assembly, which can drive the lifting workbench 2 and the heavy workpiece to lift upward.

[0023] The frame 1 is provided with a guide assembly for guiding the lifting platform 2 to be raised and lowered. The guide assembly includes guide posts 4 arranged at the four corners of the bottom of the lifting platform 2. The bottom of the guide posts 4 passes through the frame 1. The top surface of the frame 1 is provided with a guide sleeve 5 that is slidably fitted with the guide posts 4.

[0024] The lifting drive assembly includes a cylinder 12, which is installed on the frame 1 through a cylinder mounting seat 13. The movable end of the cylinder 12 is connected to the horizontal slide 10 located under the lifting workbench 2. The slide 10 is slidably assembled with the slide rail 11 on the frame 1. A sliding roller mounting seat 9 for mounting a sliding roller 8 is provided at the top of the slide 10.

[0025] Support platforms 3 are symmetrically arranged on both sides of the bottom of the lifting workbench 2. A sliding guide surface 7 is provided on the support platform 3, which is slidingly connected to the rolling pulley 8. The sliding guide surface 7 is tilted downward. A bent in-situ slot 14 is provided on the support platform 3 connected to the upper end of the sliding guide surface 7, which is equipped with the rolling pulley 8. The lower end of the sliding guide surface 7 is connected to the horizontal surface of the support platform 3.

[0026] A positioning member 6 for positioning the workpiece is also provided on the top of the lifting workbench 2, which can accurately complete the installation of the workpiece.

[0027] A position switch for detecting whether the workpiece is lifted into position is also provided on the frame 1 located on one side of the lifting workbench 2. A detection column 15 is installed on the frame 1, and the position switch is installed on a detection switch seat 16 provided on the top of the detection column 15.

[0028] A height detection component for detecting the lifting height of the lifting workbench is also provided below the lifting workbench 2 . The height detection component includes a lifting detection block 18 , a first proximity switch 19 , and a second proximity switch 20 .

[0029] The jacking detection block 18 is arranged at the bottom end of the jacking detection rod 17 , and the jacking detection rod 17 is installed at the bottom end of the lifting workbench 2 .

[0030] The second proximity switch 20 and the first proximity switch 19 are respectively mounted on mounting brackets on the frame 1 , and the second proximity switch 20 is located above the first proximity switch 19 . The mounting bracket is arranged near the end of the lifting platform 2 where the jacking detection block 18 is mounted.

[0031] When the lifting detection block 18 corresponds to the second proximity switch 20, it indicates that the lifting platform 2 has risen to its position and the next operation can be carried out; when the lifting detection block 18 corresponds to the first proximity switch 19, it indicates that the lifting platform 2 has descended to its position. At this time, the rolling pulley 8 is in the original position slot 4.

[0032] When in use, the cylinder should be adjusted so that the rolling pulley 8 is located in the original position slot 14. This is the initial position of lifting. The bottom of the heavy workpiece is installed on the lifting workbench 2 through the positioning piece 6. The cylinder 12 is started to drive the slide 10 to move horizontally toward the sliding guide surface 7. At the same time, the rolling pulley 8 moves with the slide 10.

[0033] Since the guide assembly guides the lifting platform 2 to move up and down, when the rolling pulley 8 moves along the sliding guide surface 7, the rolling pulley does not push the lifting platform 2 to move horizontally, but instead lifts the sliding guide surface 7 upward under the guide limit action of the guide assembly to complete the lifting of the lifting platform 2.

[0034] When the rolling pulley 8 moves to the horizontal plane connected to the lower end of the sliding guide surface 7, the in-place switch is triggered, and at the same time the lifting detection block 18 corresponds to the second proximity switch 20, indicating that the lifting workbench 2 and the heavy workpiece are lifted into place.

[0035] When the cylinder retracts, the rolling pulley 8 moves in the opposite direction along the sliding guide surface. At this time, the lifting workbench moves downward under the action of its own gravity. When the rolling pulley moves to the inside of the original position slot, the lifting workbench falls back to its original position. At this time, the jacking detection block 18 corresponds to the first proximity switch 19, ensuring that the lifting workbench is lowered into place.

[0036] The utility model provides a heavy workpiece lifting system, which lifts the heavy workpiece by arranging a lifting drive component and a guide component, thereby improving the lifting stability. At the same time, the lifting drive component converts the horizontal movement of the cylinder into the vertical lifting movement of the lifting workbench through the cooperation of the horizontal slide, rolling pulley and sliding guide surface, thereby reducing the space occupied by the lifting system and the power consumption of the cylinder, thereby solving the problems of the existing heavy workpiece lifting system that the space occupied is large and the stability and accuracy are low.

Claims

1. A heavy workpiece lifting system, characterized by: The invention comprises a frame (1), a lifting platform (2) for loading heavy workpieces is installed on the frame (1), and the lifting platform (2) is connected to a lifting drive assembly; the frame (1) is also equipped with a guide assembly for guiding the lifting platform (2) to be lifted and lowered; the lifting drive assembly comprises a cylinder (12) installed on the frame (1) through a cylinder mounting seat (13), the cylinder (12) is connected to a horizontal slide (10) located below the lifting platform (2), the slide (10) is slidably connected to a slide rail (11) on the frame (1), and a rolling pulley mounting seat (9) for mounting a rolling pulley (8) is provided on the top of the slide (10); and the invention also comprises a support platform (3) symmetrically arranged on both sides of the bottom of the lifting platform (2), and a sliding guide surface (7) is provided on the support platform (3) for slidingly connecting to the rolling pulley (8) to facilitate lifting the platform.

2. A heavy workpiece lifting system according to claim 1, characterized in that: The sliding guide surface (7) is tilted downward, and a support platform (3) connected to the upper end of the sliding guide surface (7) is provided with a bent in-situ slot (14) for assembling with the rolling pulley (8) at an initial position, and the lower end of the sliding guide surface (7) is connected to the horizontal surface of the support platform (3).

3. A heavy workpiece lifting system according to claim 1, characterized in that: The guide assembly includes guide columns (4) arranged at the four corners of the bottom of the lifting workbench (2), the bottom of the guide columns (4) passes through the frame (1), and a guide sleeve (5) is provided on the top surface of the frame (1) and is slidably fitted with the guide columns (4).

4. A heavy workpiece lifting system according to claim 1, characterized in that: A positioning member (6) for positioning the workpiece is provided on the top surface of the lifting workbench (2).

5. The heavy workpiece lifting system according to claim 1, characterized in that: A position switch for detecting whether the workpiece is lifted into position is also provided on the frame (1) located on one side of the lifting workbench (2); a detection column (15) is installed on the frame (1), and a detection switch seat (16) for installing the position switch is provided on the top of the detection column (15).

6. A heavy workpiece lifting system according to claim 1, characterized in that: A height detection assembly for detecting the lifting height of the workbench is also provided below the lifting workbench (2); the height detection assembly comprises a lifting detection block (18), a first proximity switch (19) indicating that the lifting workbench has reached a certain position when corresponding to the lifting detection block, and a second proximity switch (20) indicating that the lifting workbench has reached a certain position when corresponding to the lifting detection block; The jacking detection block (18) is arranged at the bottom end of the jacking detection rod (17), and the jacking detection rod (17) is installed at the bottom of the lifting workbench (2); the second proximity switch (20) and the first proximity switch (19) are arranged in parallel on a mounting bracket on the frame (1), and the mounting bracket is arranged close to the end of the lifting workbench (2) where the jacking detection block (18) is installed.

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