Weighing mechanism of vertical dynamic balancing machine

Abstract

The present invention relates to the technical field of dynamic balancing machines. Disclosed is a weighing mechanism of a vertical dynamic balancing machine, comprising a base, a support frame, a horizontal locating plate, a mounting base, and support plates, wherein adjustment blocks are fixedly mounted on four edge sides of the mounting base; the horizontal locating plate is provided as a square-loop structure; the mounting base is located on the inner side of the horizontal locating plate, and the mounting base is not in contact with the horizontal locating plate; the four adjustment blocks are all located below the horizontal locating plate. The present invention achieves rapid measurement of the weight of a part to be measured to facilitate a weighting or de-weighting operation on a workpiece. When dynamic balance testing is continued after weighing has been completed, the mounting base can be jacked up and adjusted to a horizontal state by using jacking assemblies in conjunction with the adjustment blocks, so that a dynamic balance testing mechanism on the mounting base can be kept horizontal, thereby ensuring the precision of dynamic balance detection. Moreover, the adjustment blocks can be fixed by means of pressing rings and the horizontal locating plate, so that the mounting base is kept stable.

Description

Weighing mechanism of a vertical dynamic balancing machine Technical Field

[0001] This invention relates to the field of dynamic balancing machine technology, specifically a weighing mechanism for a vertical dynamic balancing machine. Background Technology

[0002] A balancing machine is a device specifically designed to measure the magnitude and phase position of imbalance in a rotating object. During rotation, if the center of mass of a rotor does not coincide with its axis of rotation, centrifugal force is generated. This centrifugal force caused by imbalance leads to unnecessary vibrations in the rotor bearings, which not only increases noise but may also accelerate bearing wear, thus significantly reducing product performance and expected lifespan. Therefore, it is crucial to perform precise balancing correction using a balancing machine before the product leaves the factory.

[0003] Vertical dynamic balancing machines specifically refer to balancing machines designed with a vertically mounted drive spindle. They are widely used for balancing various components that do not have an integrated spindle. These machines typically consist of a chassis containing a dynamic balancing mechanism. A workpiece clamping part is located at the top of the dynamic balancing mechanism, extending from the top of the chassis to secure the workpiece to be tested. The balancing mechanism is then activated, causing the workpiece to rotate for dynamic balancing testing.

[0004] Before conducting dynamic balancing tests on rotors, weight measurement is typically required to ensure test accuracy. During dynamic balancing, the workpiece is weighted or unweighted based on real-time data to optimize its balance. However, in existing production processes, weighing and dynamic balancing tests are often two separate steps performed on different equipment. This not only requires operators to physically transfer and switch operations between the two processes, reducing testing efficiency, but also increases operational complexity and potential error risks.

[0005] To improve production efficiency and simplify operations, the weighing mechanism is integrated directly into the balancing machine to weigh the entire weight of the dynamic balancing mechanism and the part under test, enabling continuous weight measurement and dynamic balancing testing on a single device. However, this integration faces two main technical challenges: First, since the weighing end of the weighing mechanism is typically extendable, mounting the dynamic balancing mechanism above it may lead to instability in the dynamic balancing mechanism, affecting the accuracy and repeatability of the testing process. Second, vibrations generated by the dynamic balancing mechanism during testing may be transmitted to the weighing mechanism, affecting the performance and lifespan of the load cell.

[0006] Therefore, it is necessary to provide a weighing mechanism for a vertical dynamic balancing machine to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a weighing mechanism for a vertical dynamic balancing machine, which enables rapid measurement of the weight of the part to be tested, so as to facilitate the addition or removal of weight from the workpiece, and can ensure the accuracy of dynamic balancing detection.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a weighing mechanism for a vertical dynamic balancing machine, comprising a base, a support frame, a horizontal positioning plate, a mounting base, and a support plate. Adjusting blocks are fixedly installed on all four sides of the mounting base. The horizontal positioning plate is configured with a U-shaped structure. The mounting base is located inside the horizontal positioning plate and does not contact it. All four adjusting blocks are located below the horizontal positioning plate. The horizontal positioning plate is mounted on the support frame, and the bottom end of the support frame is connected to the ground. A mounting seat is fixedly installed on the top of the base. A weighing sensor is mounted on the mounting seat, and a weighing pan is fixedly installed on the weighing end of the weighing sensor. The bottom end of the mounting base extends into the weighing pan, and a gap is provided between the four walls of the mounting base and the inner wall of the weighing pan, so that when the mounting base rises, it does not contact the weighing pan. A support plate is fixedly installed on the support frame, and multiple lifting components are provided on the support plate, each positioned directly below a plurality of adjusting blocks.

[0009] A further configuration of the present invention is as follows: the lifting assembly includes a first cylinder, a first piston, a piston rod, and a pressure ring. The first cylinder is fixedly installed on the top of the support plate. The first piston is slidably installed inside the first cylinder. The bottom end of the piston rod is fixedly connected to the first piston. The piston rod penetrates the top wall of the first cylinder. A pressure ring is fixedly fitted on the top of the piston rod. The top of the piston rod is shaped like a frustum. The bottom of the adjusting block has a groove that matches the top of the piston rod. The support plate is provided with an oil supply assembly for supplying oil to the first cylinder.

[0010] A further configuration of the present invention is as follows: the oil supply assembly includes a second cylinder, a second piston, a drive motor, and a screw. The second cylinder is fixedly installed on the top of a support plate. The second piston slides up and down inside the second cylinder. The drive motor is fixedly installed on the top of the second cylinder. A screw is fixedly installed on the output end of the drive motor. The screw passes through the second piston and is threadedly connected to the second piston. First oil supply pipes are provided on both sides of the bottom of the second cylinder. The second cylinder is connected to two first cylinders on both sides of the second cylinder through the two first oil supply pipes. The two first cylinders on both sides of the second cylinder are respectively connected to two other first cylinders through the second oil supply pipes. The first cylinder, the second cylinder, the first oil supply pipe, and the second oil supply pipe are all filled with oil. Valve assemblies are provided on both the first oil supply pipe and the second oil supply pipe.

[0011] A further configuration of the present invention is as follows: the valve assembly includes a valve housing, a valve ball, and a valve shaft; the valve shaft is rotatably connected to the valve housing; the valve ball is rotatably installed inside the valve housing; a communicating hole is provided on the valve ball; multiple valve assemblies are located on the same straight line; the valve shaft passes through the support plate; gears are fixedly installed at the bottom ends of multiple valve shafts; an electric push rod is fixedly installed at the bottom end of the support plate; a rack is fixedly connected to the output end of the electric push rod; and the rack meshes with multiple gears simultaneously.

[0012] A further feature of the present invention is that a hydraulic sensor is installed on the second cylinder, and the hydraulic sensor is electrically connected to the electric push rod through a PLC controller.

[0013] A further configuration of the present invention is as follows: a first conductive plate is embedded in the top end of the stopper rod, a wire is connected to the bottom end of the first conductive plate, the wire is electrically connected to a power source, a second conductive plate is fixedly installed in the groove at the bottom of the adjusting block, a connection interface is provided on one side of the mounting base, and the connection interface is electrically connected to the second conductive plate. When the top end of the stopper rod is inserted into the groove, the first conductive plate and the second conductive plate come into contact.

[0014] A further feature of the present invention is that an air delivery channel is provided inside the plug rod, with the top opening of the air delivery channel located at the top of the plug rod and the bottom opening of the air delivery channel located on one side of the bottom of the plug rod.

[0015] A further feature of the present invention is that a filter screen is installed at the top of the gas delivery channel.

[0016] A further feature of the present invention is that adjustable feet are installed at all four corners of the bottom end of the support frame.

[0017] A further feature of the present invention is that a level is provided on the horizontal positioning plate.

[0018] In summary, the present invention has the following beneficial effects: The present invention enables rapid measurement of the weight of the part to be tested, facilitating the addition or removal of weight from the workpiece. When performing dynamic balancing testing after weighing, the lifting assembly, in conjunction with the adjusting block, can lift and adjust the mounting base to a horizontal state, ensuring the dynamic balancing testing mechanism on the mounting base remains horizontal to guarantee the accuracy of dynamic balancing testing. Furthermore, the adjusting block is fixed in place by the pressure ring and the horizontal positioning plate, ensuring the stability of the mounting base. After the mounting base is lifted, it separates from the weighing pan, preventing vibrations generated by the dynamic balancing mechanism during the testing of the part from being transmitted to the weighing pan below. The sensor effectively extends the service life of the weighing sensor. Furthermore, the support frame and support plate support the lifting assembly, mounting base, and dynamic balancing mechanism, preventing vibrations generated during testing from being transmitted to the chassis and thus eliminating vibrations in the electronic components within the chassis, thereby extending their lifespan. Moreover, the special lifting mechanism ensures that even if the chassis is not level, the mounting base and the dynamic balancing assembly above it will automatically adjust to a level position after the lifting mechanism lifts it, guaranteeing measurement accuracy. This avoids the problem of the chassis level decreasing due to vibrations generated during prolonged measurement by the dynamic balancing mechanism, improving the equipment's detection accuracy. Attached Figure Description

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 is an enlarged structural diagram of point A in Figure 1;

[0021] Figure 3 is a structural schematic diagram of the mounting base, base, and mounting seat of the present invention;

[0022] Figure 4 is a structural schematic diagram of the support frame, support plate and horizontal positioning plate of the present invention;

[0023] Figure 5 is a structural schematic diagram of the lifting assembly, oil supply assembly and valve assembly of the present invention;

[0024] Figure 6 is a cross-sectional view of the lifting assembly of the present invention;

[0025] Figure 7 is an enlarged structural diagram of point B in Figure 6;

[0026] Figure 8 is a cross-sectional view of the oil supply assembly of the present invention;

[0027] Figure 9 is a cross-sectional view of the valve assembly of the present invention;

[0028] Figure 10 is a cross-sectional view of the adjustment block of the present invention.

[0029] In the diagram: 1. Base; 2. Mounting seat; 3. Weighing sensor; 4. Weighing pan; 5. Mounting base; 6. Adjusting block; 7. Lifting assembly; 71. First cylinder; 72. First piston; 73. Plug rod; 7301. Air supply channel; 74. Pressure ring; 8. Oil supply assembly; 81. Second cylinder; 82. Second piston; 83. Drive motor; 84. Screw; 9. Support frame; 10. Horizontal positioning plate; 11. Level; 12. Adjusting foot; 13. Support plate; 14. Chassis; 15. Filter screen; 16. First conductive sheet; 17. Wire; 18. Second conductive sheet; 19. First oil supply pipe; 20. Second oil supply pipe; 21. Valve body; 22. Valve shaft; 23. Gear; 24. Valve ball; 25. Rack; 26. Electric push rod; 27. Hydraulic sensor; 28. Connection interface. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Please refer to Figures 1-4. In this embodiment of the invention, a weighing mechanism for a vertical dynamic balancing machine includes a base 1, a support frame 9, a horizontal positioning plate 10, a mounting base 5, and a support plate 13. The base 1 is installed on the top of the machine casing 14 of the dynamic balancing machine. The mounting base 5 is used to install the dynamic balancing mechanism of the dynamic balancing machine. A clamping mechanism is provided on the dynamic balancing mechanism to clamp the part to be tested. A motor is provided on the dynamic balancing mechanism to drive the clamping mechanism to rotate, thereby driving the part to be tested to rotate. Adjusting blocks 6 are fixedly installed on all four sides of the mounting base 5. The horizontal positioning plate 10 is configured with a U-shaped structure. The mounting base 5 is located inside the horizontal positioning plate 10 and does not contact the horizontal positioning plate 10. The four adjusting blocks 6 are all located below the horizontal positioning plate 10. The base 1 is mounted on a support frame 9, with the bottom end of the support frame 9 connected to the ground. The top end of the base 1 is fixedly mounted with a mounting seat 2, and a weighing sensor 3 is mounted on the mounting seat 2. The weighing end of the weighing sensor 3 is fixedly mounted with a weighing pan 4. The bottom end of the mounting base 5 extends into the weighing pan 4, and there is a gap between the four sides of the mounting base 5 and the inner side wall of the weighing pan 4, so that when the mounting base 5 is raised, the mounting base 5 does not contact the weighing pan 4, so as to ensure that the weighing sensor 3 is not affected during the test. The support frame 9 is fixedly mounted with a support plate 13. There are two support plates 13, which are located on both sides of the mounting seat 2. Multiple lifting components 7 are set on the support plate 13, and the multiple lifting components 7 are respectively set directly below multiple adjusting blocks 6.

[0032] Referring to Figure 1, when weighing the overall weight of the weighing pan 4, the dynamic balancing mechanism, and the part to be tested, the output end of the lifting assembly 7 is in a retracted state. At this time, the output end of the lifting assembly 7 is not in contact with the adjusting block 6, and the bottom wall of the mounting base 5 is in contact with the weighing pan 4. The weight measured by the load cell 3 is the total weight of the dynamic balancing mechanism, the part to be tested, and the weighing pan 4. Subtracting the weight of the dynamic balancing mechanism and the weighing pan 4 gives the weight of the part to be tested, thus realizing the measurement of the weight of the part to be tested, so as to facilitate the addition or removal of weight from the workpiece. When the dynamic balancing test is continued after the weighing is completed, the output end of the lifting assembly 7 is extended, so that the output end of the lifting assembly 7 contacts the adjusting block 6 and pushes the mounting base 5 upward, so that the top wall of the four adjusting blocks 6 contacts the bottom wall of the horizontal positioning plate 10, thereby making the four adjusting blocks 6 The mounting base 5 is horizontal, ensuring that the dynamic balancing testing mechanism on the mounting base 5 remains horizontal and guaranteeing the accuracy of the dynamic balancing test. The adjusting block 6 is fixed in place by the pressure ring 74 and the horizontal positioning plate 10, keeping the mounting base 5 stable. After the mounting base 5 is raised, it separates from the weighing pan 4, preventing the vibration generated by the dynamic balancing mechanism during the testing of the part from being tested from being transmitted to the weighing sensor 3 below the weighing pan 4, effectively improving the service life of the weighing sensor. Furthermore, the lifting assembly 7, the mounting base 5, and the dynamic balancing mechanism are supported by the support frame 9 and the support plate 13, preventing the vibration generated during the test from being transmitted to the chassis 14, thus preventing the electronic components inside the chassis 14 from vibrating and improving the service life of the electronic components inside the chassis 14.

[0033] In this embodiment, preferably, adjustable feet 12 are installed at the four corners of the bottom of the support frame 9. The height of the adjustable feet 12 can be adjusted to adjust the level of the U-shaped plate. The bottom of the adjustable feet 12 is fixedly connected to the ground through bolts, suction cups or other connecting structures; thereby realizing the adjustment of the level of the U-shaped plate.

[0034] In this embodiment, preferably, a level 11 is provided on the horizontal positioning plate 10. The level 11 can be used to observe whether the horizontal positioning plate 10 is horizontal, so that the levelness of the horizontal positioning plate 10 can be adjusted by adjusting the foot 12.

[0035] Referring to Figures 5-8, in this embodiment of the invention, the lifting assembly 7 includes a first cylinder 71, a first piston 72, a piston rod 73, and a pressure ring 74. The first cylinder 71 is fixedly installed on the top of the support plate 13. The first piston 72 is slidably installed inside the first cylinder 71. The bottom end of the piston rod 73 is fixedly connected to the first piston 72. The piston rod 73 penetrates the top wall of the first cylinder 71. The pressure ring 74 is fixedly fitted on the top of the piston rod 73. The top of the piston rod 73 is shaped like a frustum. The bottom of the adjusting block 6 is provided with a groove. The groove is adapted to the top of the piston rod 73, so that when the top of the piston rod 73 is inserted into the groove, the outer peripheral wall of the piston rod 73 fits against the inner peripheral wall of the groove. The support plate 13 is provided with an oil supply assembly 8 for supplying oil to the first cylinder 71.

[0036] The oil supply assembly 8 includes a second cylinder 81, a second piston 82, a drive motor 83, and a screw 84. The second cylinder 81 is fixedly mounted on the top of the support plate 13. The second piston 82 slides up and down inside the second cylinder 81, and can only slide up and down relative to the second cylinder 81, but cannot rotate relative to it. The drive motor 83 is fixedly mounted on the top of the second cylinder 81, and the screw 84 is fixedly mounted on the output end of the drive motor 83. The screw 84 passes through the second piston 82, and the screw 84 is connected to the second piston. The second cylinder 81 is connected by a threaded connection. Both sides of the bottom of the second cylinder 81 are connected by a first oil supply pipe 19. The second cylinder 81 is connected to two first cylinders 71 on both sides of the second cylinder 81 through the two first oil supply pipes 19. The two first cylinders 71 on both sides of the second cylinder 81 are connected to two other first cylinders 71 through the second oil supply pipe 20. The first cylinder 71, the second cylinder 81, the first oil supply pipe 19 and the second oil supply pipe 20 are all filled with oil. Valve assemblies are provided on the first oil supply pipe 19 and the second oil supply pipe 20.

[0037] When the mounting base 5 needs to be lifted upwards, the drive motor 83 drives the screw 84 to rotate. When the screw 84 rotates, it drives the second piston 82 to move downwards. When the second piston 82 moves, the oil in the second cylinder 81 is input into the first cylinder 71 through the first oil supply pipe 19 and the second oil supply pipe 20, thereby driving the first piston 72 in the first cylinder 71 to move upwards. When the first piston 72 moves upwards, it drives the plunger 73 to move upwards, so that the top of the plunger 73 extends into the groove at the bottom of the adjusting block 6, thereby pushing the adjusting block 6 upwards, so that the top walls of the four adjusting blocks 6 are aligned with the horizontal positioning. The bottom walls of plate 10 are in contact with each other, so that the four adjusting blocks 6 are in a horizontal state, and the mounting base 5 is also in a horizontal state. At this time, the pressure ring 74 presses on the bottom wall of the adjusting block 6, thereby squeezing and fixing the adjusting block 6. Through the setting of the special lifting mechanism, even if the chassis 14 is not placed horizontally, after the lifting mechanism lifts the mounting base 5, the mounting base 5 and the dynamic balancing components above it can be automatically adjusted to a horizontal state to ensure measurement accuracy. This avoids the problem of the chassis 14 becoming less level due to vibration generated by the dynamic balancing mechanism during long-term measurement, and improves the detection accuracy of the equipment.

[0038] Please refer to Figures 5 and 9. In this embodiment, preferably, the valve assembly includes a valve housing 21, a valve ball 24, and a valve shaft 22. The valve shaft 22 is rotatably connected to the valve housing 21, and the valve ball 24 is rotatably installed inside the valve housing 21. The valve ball 24 has a connecting hole. When the connecting hole is horizontal, the first oil supply pipe 19 and the second oil supply pipe 20 are open. When the connecting hole is vertical, the first oil supply pipe 19 and the second oil supply pipe 20 are closed. Multiple valve assemblies are located on the same straight line. The valve shaft 22 passes through the support plate 13. Gears 23 are fixedly installed at the bottom of multiple valve shafts 22. An electric push rod 26 is fixedly installed at the bottom of the support plate 13. A rack 25 is fixedly connected to the output end of the electric push rod 26. The rack 25 meshes with multiple gears 23 simultaneously. The extension and retraction of the output of the electric push rod 26 can drive the rack 25 to move. When the rack 25 moves, it drives the gears 23 to rotate, thereby driving the valve ball 24 to rotate through the valve shaft 22, thereby controlling the opening and closing state of the valve assembly.

[0039] In this embodiment, preferably, a hydraulic sensor 27 is installed on the second cylinder 81. The hydraulic sensor 27 is electrically connected to the electric push rod 26 through a PLC controller. When the tops of multiple piston rods 73 are pressed on the adjusting block 6 and the adjusting block 6 is pressed on the horizontal positioning plate 10, the oil pressure in the second cylinder 81 gradually increases as the second piston 82 continues to move downward. When the hydraulic sensor 27 detects that the oil pressure in the second cylinder 81 is large, it controls the output end of the electric push rod 26 to extend through the PLC controller, thereby driving the gear 23 to rotate through the rack 25, causing the valve ball 24 to rotate and close the first oil supply pipe 19 and the second oil supply pipe 20. This ensures that multiple first cylinders 71 are in a closed state, preventing the piston rods 73 from rising or falling, thus ensuring the stability of the mounting base 5.

[0040] Since the dynamic balancing mechanism includes a motor, the motor needs to be powered through wire 17. Since wire 17 is connected to the power supply, when weighing the dynamic balancing mechanism and the part to be tested, the wire 17 connected to the power supply will affect the weighing accuracy. In order to solve this problem, the following embodiment is provided.

[0041] Please refer to Figures 3, 6, and 10. In this embodiment of the invention, a first conductive plate 16 is embedded in the top of the stopper rod 73, and a wire 17 is connected to the bottom of the first conductive plate 16. The wire 17 is electrically connected to the power supply. A second conductive plate 18 is fixedly installed in the groove at the bottom of the adjusting block 6. A connection interface 28 is provided on one side of the mounting base 5. The connection interface 28 is electrically connected to the second conductive plate 18. When the top of the stopper rod 73 is inserted into the groove, the first conductive plate 16 and the second conductive plate 18 come into contact. The motor on the dynamic balancing mechanism is electrically connected to the second conductive plate 18. At this time, the power supply can supply power to the motor through the wire 17, the first conductive plate 16, the second conductive plate 18, and the connection interface 28. During the weighing process, the stopper rod 73 is separated from the adjusting block 6, and the first conductive plate 16 is separated from the second conductive plate 18. This makes the weighing of the dynamic balancing mechanism and the part to be measured by the weighing sensor no longer affected by the power supply wire 17, thereby improving the weighing accuracy.

[0042] In this embodiment, preferably, a gas delivery channel 7301 is provided inside the plug rod 73. The top opening of the gas delivery channel 7301 is located at the top of the plug rod 73, and the bottom opening of the gas delivery channel 7301 is located on one side of the bottom of the plug rod 73. When the plug rod 73 moves upward, the gas above the first piston 72 is output through the gas delivery channel 7301. The top opening of the gas delivery channel 7301 is set towards the groove, so that the blown gas can act on the second conductive sheet 18. On the one hand, it can clean the second conductive sheet 18 and reduce the dust adhesion on the second conductive sheet 18. On the other hand, it can cool the second conductive sheet 18 and prevent the second conductive sheet 18 from overheating.

[0043] In this embodiment, preferably, a filter screen 15 is installed at the top of the air supply channel 7301, which can prevent dust and other impurities from entering the first cylinder 71.

[0044] The above are merely preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made in accordance with the structure, features and principles of the present invention patent application are included within the scope of the present invention patent application.

Claims

1. A weighing mechanism for a vertical dynamic balancing machine, comprising a base (1), a support frame (9), a horizontal positioning plate (10), a mounting base (5), and a support plate (13), characterized in that: Adjusting blocks (6) are fixedly installed on all four sides of the mounting base (5). The horizontal positioning plate (10) is configured as a U-shaped structure. The mounting base (5) is located inside the horizontal positioning plate (10) and does not contact the horizontal positioning plate (10). The four adjusting blocks (6) are all located below the horizontal positioning plate (10). The horizontal positioning plate (10) is installed on the support frame (9). The bottom end of the support frame (9) is connected to the ground. The top of the base (1) is fixedly installed with a mounting seat (2). A weighing device is installed on the mounting seat (2). The weighing sensor (3) has a weighing pan (4) fixedly installed at its weighing end. The bottom end of the mounting base (5) extends into the weighing pan (4), and there is a gap between the four sides of the mounting base (5) and the inner side wall of the weighing pan (4) so ​​that when the mounting base (5) is raised, the mounting base (5) does not contact the weighing pan (4). A support plate (13) is fixedly installed on the support frame (9), and multiple lifting components (7) are provided on the support plate (13). The multiple lifting components (7) are respectively located directly below the multiple adjusting blocks (6).

2. The weighing mechanism of a vertical dynamic balancing machine according to claim 1, characterized in that: The lifting assembly (7) includes a first cylinder (71), a first piston (72), a piston rod (73), and a pressure ring (74). The first cylinder (71) is fixedly installed on the top of the support plate (13). The first piston (72) is slidably installed inside the first cylinder (71). The bottom end of the piston rod (73) is fixedly connected to the first piston (72). The piston rod (73) passes through the top wall of the first cylinder (71). The pressure ring (74) is fixedly fitted on the top of the piston rod (73). The top of the piston rod (73) is set in a frustum shape. The bottom of the adjusting block (6) is provided with a groove that matches the top of the piston rod (73). The support plate (13) is provided with an oil supply assembly (8) for supplying oil to the first cylinder (71).

3. The weighing mechanism of a vertical dynamic balancing machine according to claim 2, characterized in that: The oil supply assembly (8) includes a second cylinder (81), a second piston (82), a drive motor (83), and a screw (84). The second cylinder (81) is fixedly installed on the top of the support plate (13). The second piston (82) slides up and down inside the second cylinder (81). The drive motor (83) is fixedly installed on the top of the second cylinder (81). The screw (84) is fixedly installed on the output end of the drive motor (83). The screw (84) passes through the second piston (82) and is threadedly connected to the second piston (82). (81) Both sides of the bottom are connected by a first oil supply pipe (19). The second cylinder (81) is connected to two first cylinders (71) on both sides of the second cylinder (81) through two first oil supply pipes (19). The two first cylinders (71) on both sides of the second cylinder (81) are connected to two other first cylinders (71) through a second oil supply pipe (20). The first cylinder (71), the second cylinder (81), the first oil supply pipe (19) and the second oil supply pipe (20) are all filled with oil. The first oil supply pipe (19) and the second oil supply pipe (20) are all equipped with valve assemblies.

4. The weighing mechanism of a vertical dynamic balancing machine according to claim 3, characterized in that: The valve assembly includes a valve housing (21), a valve ball (24), and a valve shaft (22). The valve shaft (22) is rotatably connected to the valve housing (21). The valve ball (24) is rotatably installed inside the valve housing (21). A connecting hole is provided on the valve ball (24). Multiple valve assemblies are located on the same straight line. The valve shaft (22) passes through the support plate (13). Gears (23) are fixedly installed at the bottom ends of multiple valve shafts (22). An electric push rod (26) is fixedly installed at the bottom end of the support plate (13). A rack (25) is fixedly connected to the output end of the electric push rod (26). The rack (25) meshes with multiple gears (23) simultaneously.

5. The weighing mechanism of a vertical dynamic balancing machine according to claim 4, characterized in that: A hydraulic sensor (27) is installed on the second cylinder (81), and the hydraulic sensor (27) is electrically connected to the electric push rod (26) through a PLC controller.

6. The weighing mechanism of a vertical dynamic balancing machine according to claim 2, characterized in that: The top end of the stopper (73) is embedded with a first conductive plate (16), and the bottom end of the first conductive plate (16) is connected to a wire (17). The wire (17) is electrically connected to the power supply. A second conductive plate (18) is fixedly installed in the groove at the bottom of the adjusting block (6). A connection interface (28) is provided on one side of the mounting base (5). The connection interface (28) is electrically connected to the second conductive plate (18). When the top end of the stopper (73) is inserted into the groove, the first conductive plate (16) and the second conductive plate (18) come into contact.

7. The weighing mechanism of a vertical dynamic balancing machine according to claim 6, characterized in that: The piston rod (73) has an air supply channel (7301) inside. The top opening of the air supply channel (7301) is located at the top of the piston rod (73), and the bottom opening of the air supply channel (7301) is located on one side of the bottom of the piston rod (73).

8. The weighing mechanism of a vertical dynamic balancing machine according to claim 7, characterized in that: A filter screen (15) is installed at the top of the gas delivery channel (7301).

9. The weighing mechanism of a vertical dynamic balancing machine according to claim 1, characterized in that: Adjustable feet (12) are installed at the four corners of the bottom of the support frame (9).

10. The weighing mechanism of a vertical dynamic balancing machine according to claim 1, characterized in that: A level (11) is provided on the horizontal positioning plate (10).

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