Mechanical balance for metrological verification

Abstract

The utility model belongs to the technical field of mechanical balances, and particularly relates to a mechanical balance for metrological verification, which comprises a detection table. A limiting mechanism is arranged on the inner side of the detection table, an adjusting mechanism is arranged on the side face of the detection table, a detection mechanism is arranged on the top side of the detection table, the limiting mechanism comprises a supporting plate, mounting bases are symmetrically and rotationally mounted at the two ends of a connecting rod, a threaded cylinder is fixed to one end of each mounting base, and a threaded rod is rotationally inserted into the inner side of each threaded cylinder in a penetrating mode. A to-be-measured object is placed on the surface of the object placing disc on one side, the object placing disc rotates around the mounting base under the cooperation of the mounting base, and the sleeves are pushed to slide on the sliding rod under the cooperation of the sliding base at the same time, so that the to-be-measured object is measured. At the moment, the weight is placed on the surface of the storage disc on the other side until the connecting rod is in the horizontal position, the storage disc cannot incline in the measurement process, and the problem that the measurement result of the balance is inaccurate due to inclination of the tray is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical balances, in particular to a mechanical balance for measurement and verification. Background Art

[0002] A mechanical balance is a traditional tool used to measure the weight of an object. It uses a mechanical balance method, and the indication mechanically represents the mass of the object. When the weights and the object are placed on the platforms on both sides of the balance, the mass of the object is measured until the object and the weights reach a state of equilibrium.

[0003] The announcement number is CN215338517U. The invention discloses an easy-to-assemble mechanical balance for metrology and calibration. The main body is a base, a tray is symmetrically arranged on the top of the base, a fixed seat is symmetrically arranged between the bottom of the tray and the base, a supporting base is arranged at the four corners of the bottom side of the base, and a fixed block is arranged on the bottom side of the supporting base. A telescopic groove is opened on the bottom side of the supporting base, a telescopic block is arranged on the inside of the telescopic groove, and the telescopic block is connected to the inner wall of the telescopic groove by threaded cooperation. A movable block is fixed on the top of the supporting base. Through the structure of the supporting base, the tilt state of the balance can be changed during use, thereby preventing the balance placement area from being uneven and causing inaccurate balance measurement results.

[0004] The above-mentioned easy-to-assemble mechanical balance for metrology and calibration still has problems. During the use of the balance, the tray will tilt, causing the center of gravity of objects on its surface to change, and objects are easy to fall from the surface of the tray, and the measurement results are inaccurate. Therefore, a mechanical balance for metrology and calibration is proposed. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, the tray of the balance on the market will tilt during use, causing the center of gravity of the object on its surface to change, the object is easy to fall from the surface of the tray, and the measurement result is inaccurate. The utility model proposes a mechanical balance for metrology verification.

[0006] The technical solution adopted by the utility model to solve its technical problem is: the mechanical balance for metrology verification described in the utility model includes a detection platform; a limiting mechanism is arranged on the inner side of the detection platform, an adjustment mechanism is arranged on the side of the detection platform, a detection mechanism is arranged on the top side of the detection platform, and a support plate is fixed on the top side of the detection platform.

[0007] Preferably, the limiting mechanism includes a supporting plate, a connecting rod is rotatably mounted on the side surface of the supporting plate through a bearing, mounting seats are symmetrically rotatably mounted on both ends of the connecting rod, a threaded barrel is fixed at one end of the mounting seat, a threaded rod is rotatably inserted into the inner side of the threaded barrel, a placing plate is arranged on the top end of the threaded rod, a sliding rod is fixed to the bottom inner end of the detection platform, sleeves are slidably mounted on both ends of the sliding rod through a sliding seat, the bottom end of the threaded rod is slidably inserted into the inner side of the sleeve, the top end of the threaded rod is rotatably connected to the placing plate through a limiting seat, and a base is mounted on the bottom side of the detection platform, and the placing plate is always moved in a direction perpendicular to the detection platform through the structure of the threaded barrel and the sleeve to prevent it from tilting and causing objects to fall, thereby causing inaccurate measurement results.

[0008] Preferably, the adjustment mechanism includes a base, the inner center position of the base is rotatably connected to the detection platform through a bearing, a positioning hole is opened on the side of the base, a rod is slidably inserted into the inner side of the detection platform, a limiting cap is fixed at one end of the rod, a spring is fixedly connected between one side of the limiting cap and the detection platform, the spring is sleeved on the rod, one end of the rod is inserted and installed on the inner side of the positioning hole, and the rod is used in conjunction with the positioning hole, so that the detection platform can be adjusted to be parallel to the ground after the balance is placed, thereby ensuring the accuracy of the measurement structure.

[0009] Preferably, the detection mechanism includes a connecting rod, a pointer is fixed at the center position of the top side of the connecting rod, a dial is fixed at the top of the support plate, and the top of the pointer is located on one side of the dial. By using the dial and the pointer in conjunction, it is possible to directly observe whether the two ends of the balance are level, and the operation is simple and easy to use.

[0010] The utility model is beneficial in that:

[0011] 1. The utility model adopts a structural design of a mechanical balance for metrology and verification, and sets a limit mechanism to rotate the threaded rod so that the threaded rod, in cooperation with the threaded cylinder, drives the placement plates on both sides to move up and down to a suitable height. At this time, the object to be measured is placed on the surface of the placement plate on one side. At this time, the object drives the placement plate to descend, and in cooperation with the mounting seat, the placement plate rotates around the mounting seat, and at the same time drives the threaded rod to move up and down inside the sleeve, and at the same time pushes the sleeve to slide on the slide rod in cooperation with the sliding seat. At this time, the weight is placed on the surface of the placement plate on the other side until the connecting rod is in a horizontal position. The placement plate will not tilt during the measurement process, thereby solving the problem of inaccurate balance measurement results caused by the tilt of the tray.

[0012] 2. The utility model adopts the structural design of a mechanical balance for metrology and verification. By setting an adjustment mechanism, the base can be placed in the desired position. At this time, the insertion rod can be pushed to be pulled out from the inside of the positioning hole, thereby releasing the fixation between the base and the testing platform. At this time, the testing platform can be rotated to rotate inside the base until the testing platform is parallel to the ground. At this time, the spring pulls one end of the limit cap through its own elastic force, thereby pushing the insertion rod to be reinserted into the inside of a suitable positioning hole, and re-fixing the base and the testing platform to ensure that the balance can be used for normal measurement on an inclined plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure;

[0015] Figure 2 It is a side view of the three-dimensional structure of the limiting mechanism;

[0016] Figure 3 It is a sectional view of the main three-dimensional structure of the adjustment mechanism;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the testing organization;

[0018] Figure 5 It is a schematic diagram of the overall three-dimensional structure when viewed from above.

[0019] In the figure: 1. test table; 2. support plate; 3. connecting rod; 4. mounting seat; 5. threaded cylinder; 6. threaded rod; 7. limit seat; 8. storage tray; 9. sliding rod; 10. sliding seat; 11. sleeve; 12. base; 13. positioning hole; 14. insertion rod; 15. limit cap; 16. spring; 17. pointer; 18. dial; 19. rubber pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4As shown, a mechanical balance for metrology verification includes a detection platform 1; a limit mechanism is arranged inside the detection platform 1, an adjustment mechanism is arranged on the side of the detection platform 1, a detection mechanism is arranged on the top side of the detection platform 1, and a support plate 2 is fixed on the top side of the detection platform 1;

[0022] See also Figure 2 As shown, the limiting mechanism includes a support plate 2, a connecting rod 3 is rotatably installed on the side of the support plate 2 through a bearing, and mounting seats 4 are symmetrically rotatably installed at both ends of the connecting rod 3, a threaded cylinder 5 is fixed at one end of the mounting seat 4, a threaded rod 6 is rotatably inserted into the inner side of the threaded cylinder 5, and a storage tray 8 is arranged on the top of the threaded rod 6, a sliding rod 9 is fixed to the bottom end of the inner side of the detection platform 1, and sleeves 11 are slidably installed at both ends of the sliding rod 9 through sliding seats 10, the bottom end of the threaded rod 6 is slidably inserted into the inner side of the sleeve 11, and the top of the threaded rod 6 is rotatably connected with the storage tray 8 through a limiting seat 7, and a base 12 is mounted on the bottom side of the detection platform 1; when the measurement result is inaccurate due to the tilt of the tray during operation, the detection platform 1 is fixed to the bottom end of the inner side of the detection platform 1 through the limiting seat 7. The structure of the limiting mechanism is to rotate the threaded rod 6 so that, with the cooperation of the threaded cylinder 5, it drives the storage trays 8 on both sides to rise and fall to a suitable height. At this time, the object to be measured is placed on the surface of the storage tray 8 on one side. At this time, the object drives the storage tray 8 to descend, and with the cooperation of the mounting seat 4, the storage tray 8 rotates around the mounting seat 4, and at the same time drives the threaded rod 6 to rise and fall on the inside of the sleeve 11, and at the same time pushes the sleeve 11 to slide on the slide rod 9 with the cooperation of the sliding seat 10. At this time, the weight is placed on the surface of the storage tray 8 on the other side until the connecting rod 3 is in a horizontal position. During the measurement process, the storage tray 8 will not tilt, and always moves in a direction perpendicular to the detection platform 1 to prevent its force direction from changing, causing the object to fall from the surface of the tray, or inaccurate measurement results.

[0023] See also Figure 3As shown, the adjustment mechanism includes a base 12, the inner center position of the base 12 is rotatably connected to the detection platform 1 through a bearing, a positioning hole 13 is opened on the side of the base 12, and a rod 14 is slidably inserted into the inner side of the detection platform 1, and a limiting cap 15 is fixed at one end of the rod 14. A spring 16 is fixedly connected between one side of the limiting cap 15 and the detection platform 1, and the spring 16 is sleeved on the rod 14, and one end of the rod 14 is inserted and installed on the inner side of the positioning hole 13; when working, if the balance is placed on an uneven surface, it will be unable to measure. When there is a problem, the base 12 can be placed in the desired position by adjusting the structure of the mechanism. At this time, the insertion rod 14 can be pushed to be pulled out from the inside of the positioning hole 13, thereby releasing the fixation between the base 12 and the testing platform 1. At this time, the testing platform 1 can be rotated to rotate inside the base 12 until the testing platform 1 is parallel to the ground. At this time, the spring 16 pulls one end of the limiting cap 15 through its own elastic force, thereby pushing the insertion rod 14 to be re-inserted into the inside of the appropriate positioning hole 13, and the base 12 and the testing platform 1 are re-fixed and connected, ensuring that the balance can be used for normal measurement on the inclined plane.

[0024] See also Figure 4 As shown, the detection mechanism includes a connecting rod 3, a pointer 17 is fixed at the center position of the top side of the connecting rod 3, a dial 18 is fixed at the top of the support plate 2, and the top of the pointer 17 is located on one side of the dial 18; when working, when encountering the problem that the balance structure is complicated and inconvenient to use, through the structure of the detection mechanism, the object and the weight are placed on the surface of the storage trays 8 on both sides, and the position indicated by one end of the pointer 17 is observed. When one end of the pointer 17 is located in the middle position of the side of the dial 18, the two ends of the balance are in a horizontal state, and the mass of the weight is the mass of the object to be measured. The operation is simple and easy to use.

[0025] See also Figure 5 As shown, a rubber pad 19 is fixed to the bottom side of the base 12; during operation, when the balance is a precision instrument and is easily damaged by bumps, the base 12 is separated from the placement surface by the structure of the rubber pad 19 to prevent the base 12 from being bumped, while increasing the friction between the base 12 and the placement surface to prevent the balance from falling from a desktop or the like during use.

[0026] Working principle: a mechanical balance is a traditional tool for measuring the weight of an object. It adopts a mechanical balance method, and the indication mechanically represents the mass of the object. When the weights and the object are placed on the platforms on both sides of the balance, the mass is measured until the object and the weights reach a state of equilibrium. During the use of the existing balance, the tray will tilt, resulting in a change in the center of gravity of the object on its surface. The object is easy to fall from the surface of the tray, and the measurement result is inaccurate. In order to solve this problem, a limiting mechanism and an adjusting mechanism are set to place the base 12 in the desired position. At this time, the insertion rod 14 can be pushed to be pulled out from the inside of the positioning hole 13, thereby releasing the fixation between the base 12 and the testing platform 1. At this time, the testing platform 1 can be rotated to rotate on the inside of the base 12 until the testing platform 1 is parallel to the ground. At this time, the spring 16 pulls one end of the limiting cap 15 through its own elastic force, thereby pushing the insertion rod 14 to be re-inserted into the inside of the appropriate positioning hole 13, and re-fixing the base 12 and the testing platform 1 to ensure that the balance can be used for normal measurement on the inclined plane. Then the threaded rod 6 is rotated to make it With the cooperation of the threaded cylinder 5, the storage trays 8 on both sides are driven to move up and down to a suitable height. At this time, the object to be measured is placed on the surface of the storage tray 8 on one side. At this time, the object drives the storage tray 8 to descend. With the cooperation of the mounting seat 4, the storage tray 8 is rotated around the mounting seat 4, and the threaded rod 6 is driven to move up and down inside the sleeve 11. At the same time, the sleeve 11 is pushed to slide on the slide bar 9 with the cooperation of the sliding seat 10. At this time, the weight is placed on the surface of the storage tray 8 on the other side until the connecting rod 3 is in a horizontal position. During the measurement process, the storage tray 8 will not tilt, and will always move in a direction perpendicular to the detection platform 1 to prevent its force direction from changing, causing the object to fall from the surface of the tray, or inaccurate measurement results. After placing the object and the weight on the surface of the storage tray 8 on both sides, observe the position indicated by one end of the pointer 17. When one end of the pointer 17 is located in the middle position of the side of the dial 18, the two ends of the balance are in a horizontal state, and the weight mass is the mass of the object to be measured. After the measurement is completed, the object and the weight can be removed, which solves the problem of inaccurate balance measurement results caused by the tilt of the tray.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A mechanical balance for metrology verification, characterized in that: It comprises a testing platform (1); a limiting mechanism is arranged on the inner side of the testing platform (1), an adjusting mechanism is arranged on the side of the testing platform (1), a testing mechanism is arranged on the top side of the testing platform (1), and a supporting plate (2) is fixed on the top side of the testing platform (1); The limiting mechanism comprises a support plate (2), a connecting rod (3) is rotatably mounted on the side of the support plate (2) through a bearing, mounting seats (4) are symmetrically rotatably mounted at both ends of the connecting rod (3), a threaded cylinder (5) is fixed at one end of the mounting seat (4), a threaded rod (6) is rotatably inserted into the inner side of the threaded cylinder (5), a storage plate (8) is arranged at the top of the threaded rod (6), a sliding rod (9) is fixed at the inner bottom end of the detection platform (1), and sleeves (11) are slidably mounted at both ends of the sliding rod (9) through sliding seats (10).

2. A mechanical balance for metrology verification according to claim 1, characterized in that: The bottom end of the threaded rod (6) is slidably inserted into the inner side of the sleeve (11), and the top end of the threaded rod (6) is rotatably connected to the storage plate (8) through the limit seat (7). The bottom side of the detection platform (1) is provided with a base (12).

3. A mechanical balance for metrology verification according to claim 2, characterized in that: The adjustment mechanism comprises a base (12), and the inner center position of the base (12) is rotatably connected to the detection platform (1) through a bearing.

4. A mechanical balance for metrology verification according to claim 3, characterized in that: A positioning hole (13) is provided on the side of the base (12), and an insertion rod (14) is slidably inserted into the inner side of the detection platform (1), a limiting cap (15) is fixed at one end of the insertion rod (14), and a spring (16) is fixedly connected between one side of the limiting cap (15) and the detection platform (1).

5. A mechanical balance for metrology verification according to claim 4, characterized in that: The spring (16) is sleeved on the insertion rod (14), and one end of the insertion rod (14) is inserted and installed inside the positioning hole (13).

6. A mechanical balance for metrology verification according to claim 5, characterized in that: The detection mechanism comprises a connecting rod (3), a pointer (17) is fixed at the center position of the top side of the connecting rod (3), a dial (18) is fixed at the top end of the support plate (2), and the top end of the pointer (17) is located on one side of the dial (18).

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