Double-hydraulic lifting machine with high synchronization precision

Abstract

The utility model relates to the technical field of lifting machines, in particular to a double-hydraulic lifting machine with high synchronization precision, which comprises a fixed seat fixedly mounted between two support columns, hydraulic cylinders are fixedly mounted on the inner sides of the support columns, hydraulic rods are arranged on the inner sides of the hydraulic cylinders, and movable blocks are fixedly mounted at the top ends of the hydraulic rods. Through rolling contact movement of a movable block, a first ball and a second ball, the movable block can drive a connecting rod and a workpiece above a supporting plate to stably ascend or descend, and the same flow of hydraulic oil is controlled through a first flow control valve and a second flow control valve; according to the device, hydraulic oil can be conveyed to the two corresponding hydraulic cylinders for synchronous work, so that the device can achieve accurate synchronous control and good speed control capacity, a workpiece can reach a designated position faster and more accurately, the waiting time and the adjusting time are shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting machine technology, specifically a dual hydraulic lifting machine with high synchronization accuracy. Background Technology

[0002] With the booming development of modern industry and the rapid progress of logistics and transportation, the demand for handling and lifting of various products is increasing, especially for the handling and precise lifting and placement of large goods. Traditional handling methods can no longer meet the requirements of efficient and safe production. Therefore, various material lifting equipment has emerged in the market, aiming to reduce manual labor intensity and improve work efficiency. Among them, the dual hydraulic lift has been widely used in industrial production due to its advantages such as strong load-bearing capacity and simple operation.

[0003] In existing technologies, such as the "A High-Synchronization-Precision Dual Hydraulic Lifting Machine" with Chinese Patent No. CN221876501U, the lifting process uses dual synchronous hydraulic valves to achieve synchronous lifting of dual hydraulic lifting cylinders by a single power oil pump. During the lifting process, the lifting speed of the dual hydraulic cylinders can basically meet the production requirements. When the workpiece falls, the oil pump supply is stopped, and the valves are directly controlled by two oil circuits to ensure the speed difference of the synchronous falling of the dual cylinders, ensuring that the two ends of the workpiece fall synchronously and meeting the production needs.

[0004] In the aforementioned prior art, hydraulic oil is returned under the gravity of the workpiece by controlling the valve, which ensures that the two ends of the workpiece descend synchronously. However, it cannot control the precise synchronization of the lifting or lowering of the dual hydraulic cylinders when different workpieces have different gravity. Moreover, the speed cannot be well controlled during the lifting or lowering process. Utility Model Content

[0005] The purpose of this invention is to provide a dual hydraulic lift with high synchronization accuracy, featuring precise synchronization and speed control.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual hydraulic lift with high synchronization accuracy, comprising a fixed base fixedly installed between two support columns, a hydraulic cylinder fixedly installed on the inner side of each support column, a hydraulic rod provided on the inner side of each hydraulic cylinder, a movable block fixedly installed at the top of each hydraulic rod, a sliding groove provided on the inner side of each support column, a plurality of first ball bearings and a plurality of second ball bearings respectively provided on the inner side of the sliding groove, the movable block rollingly contacting both the first ball bearings and the second ball bearings, a fixed plate fixedly installed between the two support columns, a second connecting seat fixedly installed on the top of the fixed plate, a first connecting seat fixedly installed on the top of the second connecting seat, a hydraulic tank fixedly installed on the outer side of each support column, and a first flow control valve and a second flow control valve fixedly installed above the hydraulic tank.

[0007] For ease of protection, in a preferred embodiment of this utility model of a dual hydraulic lift with high synchronization accuracy, a connecting rod is fixedly installed on one side of the movable block, a support plate is fixedly installed at the bottom end of the connecting rod, and a rubber pad is fixedly installed on the upper surface of the support plate.

[0008] To facilitate lifting operations, in a preferred embodiment of this utility model of a dual hydraulic lift with high synchronization accuracy, a first hydraulic pump is fixedly installed on the top of the hydraulic tank, a first oil supply pipe is installed at the output end of the first hydraulic pump, and one end of the first oil supply pipe is fixedly installed with the first connecting seat.

[0009] To facilitate lifting operations, in a preferred embodiment of this utility model of a dual hydraulic lift with high synchronization accuracy, first hydraulic pipes are fixedly installed on both the left and right sides of the first connecting seat, and one end of the first hydraulic pipe is fixedly installed at the bottom of the hydraulic cylinder.

[0010] To facilitate the lowering operation, in a preferred embodiment of this utility model of a dual hydraulic lift with high synchronization accuracy, a second hydraulic pump is fixedly installed on the top of the hydraulic tank, a second oil supply pipe is installed at the output end of the second hydraulic pump, and one end of the second oil supply pipe is fixedly installed with the second connecting seat.

[0011] To facilitate the lowering operation, in a preferred embodiment of this utility model of a dual hydraulic lift with high synchronization accuracy, a second hydraulic pipe is fixedly installed on both the left and right sides of the second connecting seat, and one end of the second hydraulic pipe is fixedly installed at the top position of the hydraulic cylinder.

[0012] To facilitate the control of a constant hydraulic oil flow rate, in a preferred embodiment of this invention, a dual hydraulic lift with high synchronization accuracy, the first oil supply pipe is installed corresponding to the first flow control valve, and the second oil supply pipe is installed corresponding to the second flow control valve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] Through the rolling contact motion between the movable block and the first and second ball bearings, the movable block can smoothly lift or lower the workpiece above the connecting rod and support plate. The first and second flow control valves control the hydraulic oil flow at the same rate, enabling the hydraulic oil to be delivered to the corresponding two hydraulic cylinders for synchronous operation. This allows the device to achieve precise synchronous control and good speed control, thus enabling the workpiece to reach the designated position faster and more accurately, reducing waiting and adjustment time, and improving work efficiency. Attached Figure Description

[0015] Figure 1 This is the right-hand perspective view of the present invention.

[0016] Figure 2 This is a left-side perspective view of the structural structure of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Support column; 2. Fixed seat; 3. Hydraulic cylinder; 4. Connecting rod; 5. Support plate; 6. Hydraulic rod; 7. First connecting seat; 8. First hydraulic pipe; 9. Second connecting seat; 10. Second hydraulic pipe; 11. First flow control valve; 12. Second flow control valve; 13. Hydraulic tank; 14. First hydraulic pump; 15. Second hydraulic pump; 16. First oil supply pipe; 17. Second oil supply pipe; 18. Fixed plate; 19. Rubber pad; 20. Movable block; 21. Slide groove; 22. First ball bearing; 23. Second ball bearing. Detailed Implementation

[0019] Please see Figures 1 to 3 A dual hydraulic lift with high synchronization accuracy includes a fixed base 2 fixedly installed between two support columns 1. A hydraulic cylinder 3 is fixedly installed on the inner side of the support column 1. A hydraulic rod 6 is provided on the inner side of the hydraulic cylinder 3. A movable block 20 is fixedly installed at the top of the hydraulic rod 6. A sliding groove 21 is opened on the inner side of the support column 1. Multiple first balls 22 and multiple second balls 23 are respectively provided on the inner side of the sliding groove 21. The movable block 20 rolls in contact with the first balls 22 and the second balls 23. A fixed plate 18 is fixedly installed between the two support columns 1. A second connecting seat 9 is fixedly installed on the top of the fixed plate 18. A first connecting seat 7 is fixedly installed on the top of the second connecting seat 9. A hydraulic tank 13 is fixedly installed on the outer side of the support column 1. A first flow control valve 11 and a second flow control valve 12 are fixedly installed on the top of the hydraulic tank 13.

[0020] In this embodiment: by setting the first ball 22 and the second ball 23, the rolling contact movement between the movable block 20 and the first ball 22 and the second ball 23 is facilitated, so that the movable block 20 can drive the workpiece above the connecting rod 4 and the support plate 5 to be lifted or lowered smoothly, reducing the resistance of the movable block 20 in the slide groove 21 and better maintaining balanced movement. By setting the first flow control valve 11 and the second flow control valve 12, the hydraulic oil can be controlled to have the same flow rate, so that the hydraulic oil can be delivered to the corresponding two hydraulic cylinders 3 for synchronous operation. This allows the device to have precise synchronous control and good speed control capabilities, so that the workpiece can reach the designated position faster and more accurately, reducing waiting time and adjustment time and improving work efficiency.

[0021] As a technical optimization of this utility model, a connecting rod 4 is fixedly installed on one side of the movable block 20, a support plate 5 is fixedly installed at the bottom end of the connecting rod 4, and a rubber pad 19 is fixedly installed on the upper surface of the support plate 5.

[0022] In this embodiment, by setting the rubber pad 19, the workpiece can be prevented from being subjected to hard compression when it is placed above the support plate 5, thus enabling better lifting of the workpiece.

[0023] As a technical optimization of this utility model, a first hydraulic pump 14 is fixedly installed on the top of the hydraulic tank 13, and a first oil supply pipe 16 is installed at the output end of the first hydraulic pump 14. One end of the first oil supply pipe 16 is fixedly installed with the first connecting seat 7. A first hydraulic pipe 8 is fixedly installed on both the left and right sides of the first connecting seat 7, and one end of the first hydraulic pipe 8 is fixedly installed at the bottom of the hydraulic cylinder 3.

[0024] In this embodiment: by setting a first hydraulic pump 14, the first hydraulic pump 14 can draw the hydraulic oil in the hydraulic tank 13 into the first oil delivery pipe 16, and deliver it to the first connecting seat 7 through the first oil delivery pipe 16. The first connecting seat 7 delivers the hydraulic oil to the hydraulic cylinder 3 through the first hydraulic pipe 8, which drives the hydraulic rod 6 to rise and drives the movable block 20 to perform lifting operations along the slide groove 21, which can perform lifting operations on workpieces of different weights.

[0025] As a technical optimization of this utility model, a second hydraulic pump 15 is fixedly installed on the top of the hydraulic tank 13, and a second oil supply pipe 17 is installed at the output end of the second hydraulic pump 15. One end of the second oil supply pipe 17 is fixedly installed with the second connecting seat 9. Second hydraulic pipes 10 are fixedly installed on both the left and right sides of the second connecting seat 9, and one end of the second hydraulic pipe 10 is fixedly installed with the top position of the hydraulic cylinder 3. The first oil supply pipe 16 is installed correspondingly with the first flow control valve 11, and the second oil supply pipe 17 is installed correspondingly with the second flow control valve 12.

[0026] In this embodiment: by setting a second hydraulic pump 15, the hydraulic oil in the hydraulic tank 13 is drawn into the second oil supply pipe 17 and then transported to the second connecting seat 9 through the second oil supply pipe 17. The hydraulic oil is then transported to the hydraulic cylinder 3 through the second hydraulic pipe 10 through the second connecting seat 9, which drives the hydraulic rod 6 to descend and drives the movable block 20 to descend along the slide groove 21. This allows for the descent of workpieces of different weights.

[0027] Working principle: In use, the workpiece is placed on top of the rubber pad 19 on the support plate 5. When lifting is required, the first flow control valve 11 is adjusted to keep the hydraulic oil flow rate through the first oil supply pipe 16 constant. The first hydraulic pump 14 is started to draw hydraulic oil from the hydraulic tank 13 into the first oil supply pipe 16, and then delivers it to the first connecting seat 7. The first connecting seat 7 delivers the hydraulic oil to the hydraulic cylinder 3 through the first hydraulic pipe 8, which drives the hydraulic rod 6 to rise and moves the movable block 20 along the slide groove 21 for lifting. When lowering is required, the first flow control valve 11 is adjusted to keep the hydraulic oil flow rate through the second oil supply pipe 17 constant. With a constant hydraulic oil flow rate, the hydraulic oil in the hydraulic tank 13 is drawn into the second oil supply pipe 17 by starting the second hydraulic pump 15. The oil is then transported to the second connecting seat 9 through the second oil supply pipe 17. The hydraulic oil is then transported to the hydraulic cylinder 3 through the second hydraulic pipe 10 through the second connecting seat 9, which in turn drives the hydraulic rod 6 to descend, causing the movable block 20 to descend along the slide groove 21. Through the rolling contact movement between the movable block 20 and the first ball 22 and the second ball 23, the movable block 20 can move along the slide groove 21, causing the movable block 20 to drive the connecting rod 4 and the support plate 5 to change height. This allows the two hydraulic cylinders 3 to operate synchronously with high precision, meeting the requirements for lifting and placing logistics.

[0028] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. All electrical equipment in this utility model is powered by an external power source.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double hydraulic lifting machine with high synchronization accuracy, comprising a fixed seat (2) fixedly installed between two supporting columns (1), characterized in that: The inner side of the support column (1) is fixedly installed with a hydraulic cylinder (3), the inner side of the hydraulic cylinder (3) is provided with a hydraulic rod (6), the top end of the hydraulic rod (6) is fixedly installed with a movable block (20), the inner side of the support column (1) is provided with a sliding groove (21), the inner side of the sliding groove (21) is respectively provided with a plurality of first rolling balls (22) and a plurality of second rolling balls (23), the movable block (20) is in rolling contact with the first rolling balls (22) and the second rolling balls (23), the two support columns (1) are fixedly installed with a fixed plate (18), the top of the fixed plate (18) is fixedly installed with a second connecting seat (9), the top of the second connecting seat (9) is fixedly installed with a first connecting seat (7), the outer side of the support column (1) is fixedly installed with a hydraulic tank (13), the top of the hydraulic tank (13) is respectively fixedly installed with a first flow control valve (11) and a second flow control valve (12).

2. The dual hydraulic lift of claim 1, wherein: The side of the movable block (20) is fixedly installed with a connecting rod (4), the bottom end of the connecting rod (4) is fixedly installed with a supporting plate (5), the upper surface of the supporting plate (5) is fixedly installed with a rubber pad (19).

3. The dual hydraulic lift of claim 1, wherein: The top of the hydraulic tank (13) is fixedly installed with a first hydraulic pump (14), the output end of the first hydraulic pump (14) is installed with a first oil pipe (16), one end of the first oil pipe (16) is fixedly installed with the first connecting seat (7).

4. The dual hydraulic lift of claim 1, wherein: The left and right sides of the first connecting seat (7) are fixedly installed with a first hydraulic pipe (8), one end of the first hydraulic pipe (8) is fixedly installed with the bottom position of the hydraulic cylinder (3).

5. The dual hydraulic lift of claim 3, wherein: The top of the hydraulic tank (13) is fixedly installed with a second hydraulic pump (15), the output end of the second hydraulic pump (15) is installed with a second oil pipe (17), one end of the second oil pipe (17) is fixedly installed with the second connecting seat (9).

6. The dual hydraulic lift of claim 1, wherein: The left and right sides of the second connecting seat (9) are fixedly installed with a second hydraulic pipe (10), one end of the second hydraulic pipe (10) is fixedly installed with the top position of the hydraulic cylinder (3).

7. The dual hydraulic lift of claim 5, wherein: The first oil pipe (16) is installed corresponding to the first flow control valve (11), and the second oil pipe (17) is installed corresponding to the second flow control valve (12).

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