Micro torque weight loading system

Abstract

The present invention relates to a micro-torque weight loading system, comprising a precision moving module and a weighing pan, wherein the precision moving module is fixedly connected to a mounting base plate through an L-shaped fixing plate, the precision moving module is connected to a right-end hanger fixing plate through a hanger connecting seat, the right-end hanger fixing plate is connected to a left-end hanger fixing plate through a lower weight hanging plate and an upper weight hanging plate, micro-weights are placed in the grooves of the lower weight hanging plate and the upper weight hanging plate respectively; the lower weight loading rod and the upper weight loading rod of the weighing pan are fixedly connected to the top fixing rod of the weighing pan through the left fixing rod and the right fixing rod of the weighing pan respectively, the top fixing rod of the weighing pan is suspended on a light hook, the light hook is installed on a plumb pressing block, and the upper end of the plumb pressing block is fixedly connected to a thin steel strip. The micro-torque weight loading system of the present invention has a stable and reliable structure, good loading effect, and can effectively improve the micro-torque loading accuracy.

Description

Technical Field

[0001] The invention relates to a torque calibration system, in particular to a micro-torque weight loading system. Background Art

[0002] Torque is one of the key parameters of equipment power performance. In recent years, with the rapid development of my country's industrial level, accurate measurement of torque has become increasingly important. Especially in the fields of science and technology such as aerospace and aviation, higher requirements are placed on torque measurement. Moreover, there are more and more studies on torque measurement in China, and many achievements have been made. The torque calibration range basically covers the needs of the industrial field. The torque calibration range is as small as mNm level and as large as hundreds of kNm level, which can basically meet the torque measurement needs of various power systems.

[0003] However, the existing inertial navigation platform has played an extremely important role, but the accurate measurement of the output torque of its core component, the micro-gyro motor, is a difficult problem. The main shaft output torque of the micro-gyro motor is below the mNm level, and some are even at the μNm level. In addition, in important fields such as the moon landing project, unmanned spacecraft, and deep submersibles (7000m), a large number of micro-machines, liquid pendulums, electromagnetic pendulums, micro-motors, micro-power devices and other equipment are used, and the μNm-level torque needs to be tested and calibrated. Domestic aerospace research institutes have conducted research on micro-torque measurement devices, using air bearings as support and torque dampers to balance the tiny swing of the force arm, which can complete the full measurement of the gyro motor, but the measurement accuracy is not high. Developed countries abroad have also conducted some research, but the accuracy is not high.

[0004] Therefore, it is necessary to develop a new type of micro-torque weight loading system that adopts fully automatic loading and unloading, which can improve the accuracy of micro-torque calibration and has great promotion and application value. Summary of the invention

[0005] In order to overcome the problem that micro torque is difficult to calibrate and improve the reliability and accuracy of micro torque calibration, the present invention provides a micro torque weight loading system.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a micro-torque weight loading system, including a precision moving module and a weighing pan, the precision moving module is fixedly connected to the mounting base plate through an L-shaped fixing plate, the precision moving module is connected to the right-end hanger fixing plate through a hanger connecting seat, the right-end hanger fixing plate is connected to the left-end hanger fixing plate through a lower weight hanging plate and an upper weight hanging plate, and micro-weights are placed in the grooves of the lower weight hanging plate and the upper weight hanging plate respectively; the lower weight loading rod and the upper weight loading rod of the weighing pan are fixedly connected to the top fixing rod of the weighing pan through the left-end fixing rod and the right-end fixing rod of the weighing pan respectively, the top fixing rod of the weighing pan is suspended on a lightweight hook, the lightweight hook is installed on a vertical pressing block, and the upper end of the vertical pressing block is fixedly connected to a thin steel belt.

[0007] Furthermore, during operation, the tiny weights are respectively placed in the grooves of the lower weight hanging plate and the upper weight hanging plate, and the precision moving module moves downward to place the tiny weights of the lower weight hanging plate and the upper weight hanging plate on the lower weight loading rod and the upper weight loading rod, thereby applying the weight of the tiny weights to the thin steel strip to form a tiny torque loading; on the contrary, the precision moving module moves upward to hang the tiny weights on the lower weight loading rod and the upper weight loading rod on the grooves of the lower weight hanging plate and the upper weight hanging plate, thereby removing the weight of the tiny weights from the thin steel strip to form a tiny torque unloading.

[0008] Furthermore, the thin steel strip and the plane where the lightweight hook is located are in a cross structure.

[0009] Furthermore, the thin steel strip is made of stainless steel, has a width of 12.7 mm and a thickness of 0.02 mm, and the lightweight hook is made of titanium alloy TA10.

[0010] Furthermore, the upper weight hanging plate and the lower weight hanging plate are made of 7075 aluminum alloy.

[0011] Furthermore, the upper weight hanging plate is 28mm±0.05mm away from the bottom plane of the lower weight hanging plate. The upper weight hanging plate has 10 step planes, each of which has a groove in the middle. The groove is open with an angle of 33°. From right to left, each step plane first decreases by 4mm, the 6th step is 2mm lower than the 5th plane, and then each step plane increases by 4mm.

[0012] Furthermore, the tiny weight is made of titanium alloy TA10 rod with a diameter of φ3mm and a weight of 10mg. Its structure is in a convex shape, with the left and right sides of the top forming an angle of 30° with the horizontal direction, and the length of the middle horizontal part of the top is 3±0.1mm.

[0013] The present invention has the following effects:

[0014] 1. The micro-torque weight loading system of the present invention has a stable and reliable structure;

[0015] 2. The micro-torque weight loading system of the present invention has good loading effect and can effectively improve the micro-torque loading accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the micro-torque weight loading system of the present invention;

[0017] Figure 2 is a top view of the micro-torque weight loading system of the present invention;

[0018] Figure 3 This is the main view of the installation position of the thin steel belt and the lightweight hook;

[0019] Figure 4 It is a front view of a weight rack consisting of an upper weight hanging plate and a lower weight hanging plate;

[0020] Figure 5 This is the main view of the upper weight hanging plate;

[0021] Figure 6 It is the front view of the tiny weight;

[0022] In the figure, 1. thin steel strip, 2. plumb clamping block, 3. light hook, 4. L-shaped fixing plate, 5. precision moving module, 6. lower weight loading rod, 7. lower weight hanging plate, 8. left end bracket fixing plate, 9. upper end weight hanging plate, 10. left end fixing rod of weighing pan, 11. top fixing rod of weighing pan, 12. right end fixing rod of weighing pan, 13. upper end weight loading rod, 14. bracket connecting seat, 15. right end bracket fixing plate, 16. tiny weight, 17. mounting base, 18. M5×12 hexagon socket head screw, 19. M3×10 hexagon socket head screw, 20. M3×12 hexagon socket head screw. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1 , Figure 2As shown, the micro-torque weight loading system of the present invention includes a thin steel strip 1, a plumb pressing block 2, a lightweight hook 3, an L-shaped fixing plate 4, a precision moving module 5, a lower weight loading rod 6, a lower weight hanging plate 7, a left-end hanger fixing plate 8, an upper weight hanging plate 9, a left-end fixing rod 10 of a weighing pan, a top fixing rod 11 of a weighing pan, a right-end fixing rod 12 of a weighing pan, an upper weight loading rod 13, a hanger connecting seat 14, a right-end hanger fixing plate 15, a micro weight 16, a mounting base 17, an M5×12 hexagon socket head screw 18, an M3×10 hexagon socket head screw 19, and an M3×12 hexagon socket head screw 20.

[0025] The thin steel belt 1 is fixed to the upper end of the vertical clamping block 2, the lightweight hook 3 is installed on the vertical clamping block 2, the top fixing rod 11 of the scale pan is suspended on the lightweight hook 3, the left end fixing rod 10 of the scale pan and the right end fixing rod 12 of the scale pan are respectively installed on the top fixing rod 11 of the scale pan, the lower end weight loading rod 6 and the upper end weight loading rod 13 are respectively fixed to the left end fixing rod 10 of the scale pan and the right end fixing rod 12 of the scale pan, the L-shaped fixing plate 4 is fixed to the precision moving module 5 by four M3×10 hexagon socket head screws 19, and the L-shaped fixing plate 4 is fixed to the precision moving module 5 by four M5×12 hexagon socket head screws 19. The cylindrical head screw 18 is installed on the mounting base 17, the bracket connection seat 14 is installed on the precision moving module 5, the right end bracket fixing plate 15 is fixed on the bracket connection seat 14 by two M3×12 hexagon socket cylindrical head screws 20, the lower end weight hanging plate 7 and the upper end weight hanging plate 9 are respectively installed on the right end bracket fixing plate 15, the left end bracket fixing plate 8 is respectively connected with the lower end weight hanging plate 7 and the upper end weight hanging plate 9, and the small weights 16 are respectively placed in the grooves of the lower end weight hanging plate 7 and the upper end weight hanging plate 9, so as to realize the precise loading of small torque;

[0026] like Figure 3 As shown, a novel micro-torque weight loading system, the plane where the thin steel strip 1 and the light hook 3 are located is a cross structure, the thin steel strip 1 is made of stainless steel, with a width of 12.7mm and a thickness of 0.02mm, and the light hook (3) is made of titanium alloy TA10;

[0027] like Figure 4 , Figure 5 As shown, a new type of micro-torque weight loading system, the upper weight hanging plate 9 and the lower weight hanging plate 7 are made of 7075 aluminum alloy, the bottom planes of the two are 28mm±0.05mm apart, the upper weight hanging plate 9 has 10 step planes, each plane has a groove in the middle, the groove is open, and the angle is 33°, from right to left, each step plane first decreases by 4mm, the 6th step is 2mm lower than the 5th plane, and then each step plane increases by 4mm;

[0028] As shown in Figure 6, a new type of micro-torque weight loading system is shown. The micro-weight 16 is made of titanium alloy TA10 rod with a diameter of φ3mm and a weight of 10mg. Its structure is in a convex shape, with the left and right sides of the top forming an angle of 30° with the horizontal direction, and the length of the middle horizontal part of the top is (3±0.1)mm.

[0029] During operation, the tiny weights 16 are placed on the grooves of the lower weight hanging plate 7 and the upper weight hanging plate 9 respectively, and the precision moving module 5 moves downward to place the tiny weights 16 of the lower weight hanging plate 7 and the upper weight hanging plate 9 on the lower weight loading rod 6 and the upper weight loading rod 13, thereby applying the weight of the tiny weights 16 to the thin steel strip 1, forming a tiny torque loading; on the contrary, the precision moving module 5 moves upward to hang the tiny weights 16 on the lower weight loading rod 6 and the upper weight loading rod 13 on the grooves of the lower weight hanging plate 7 and the upper weight hanging plate 9, thereby removing the weight of the tiny weights 16 from the thin steel strip 1, forming a tiny torque unloading.

[0030] The present invention utilizes the up and down movement of a precision moving module to achieve loading and unloading of tiny torques. During operation, the precise positioning of tiny weights, weight hanging plates, and weight loading rods is utilized to accurately achieve loading and unloading of tiny torques. The invention has a firm structure, high reliability, and is easy to control and operate.

Claims

1. A micro-torque weight loading system, comprising a precision moving module (5) and a weighing pan, characterized in that: The precision moving module (5) is fixedly connected to the installation base plate (17) through an L-shaped fixing plate (4); the precision moving module (5) is connected to the right end hanging frame fixing plate (15) through a hanging frame connecting seat (14); the right end hanging frame fixing plate (15) is connected to the left end hanging frame fixing plate (8) through a lower end weight hanging plate (7) and an upper end weight hanging plate (9); small weights (16) are respectively placed in the grooves of the lower end weight hanging plate (7) and the upper end weight hanging plate (9); the lower end weight loading rod (6) and the upper end weight loading rod (13) of the weighing pan are respectively fixedly connected to the top fixing rod (11) of the weighing pan through the left end fixing rod (10) of the weighing pan and the right end fixing rod (12) of the weighing pan; the top fixing rod (11) of the weighing pan is suspended on a light hook (3); the light hook (3) is installed on a vertical pressing block (2); the upper end of the vertical pressing block (2) is fixedly connected A thin steel strip (1); the thin steel strip (1) is made of stainless steel, with a width of 12.7 mm and a thickness of 0.02 mm; the light hook (3) is made of titanium alloy TA10; the upper weight hanging plate (9) and the bottom plane of the lower weight hanging plate (7) are 28 mm ± 0.05 mm apart; the upper weight hanging plate (9) has 10 stepped planes, each plane has a groove in the middle, the groove is open, and the angle is 33°; from right to left, each stepped plane first decreases by 4 mm, the sixth step is 2 mm lower than the fifth plane, and then each stepped plane increases by 4 mm; the tiny weight (16) is made of titanium alloy TA10 rod, with a diameter of φ3 mm and a weight of 10 mg; its structure is in the shape of a convex letter, the left and right sides of the top form an angle of 30° with the horizontal direction, and the length of the middle horizontal part of the top is 3 ± 0.1 mm.

2. The micro-torque weight loading system according to claim 1, characterized in that: During operation, the tiny weights (16) are placed on the grooves of the lower weight hanging plate (7) and the upper weight hanging plate (9), respectively. The precision moving module (5) moves downward to place the tiny weights (16) on the lower weight hanging plate (7) and the upper weight hanging plate (9) on the lower weight loading rod (6) and the upper weight loading rod (13), thereby applying the weight of the tiny weights (16) to the thin steel strip (1), forming a loading of a tiny torque. On the contrary, the precision moving module (5) moves upward to hang the tiny weights (16) on the lower weight loading rod (6) and the upper weight loading rod (13) on the grooves of the lower weight hanging plate (7) and the upper weight hanging plate (9), thereby removing the weight of the tiny weights (16) from the thin steel strip (1), forming an unloading of a tiny torque.

3. The micro-torque weight loading system according to claim 1, characterized in that: The plane where the thin steel strip (1) and the light hook (3) are located is in a cross structure.

4. The micro-torque weight loading system according to claim 1, characterized in that: The upper weight hanging plate (9) and the lower weight hanging plate (7) are made of 7075 aluminum alloy.

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