Double-deck adjustable precision movement

Abstract

The utility model discloses a double -deck adjustable precision core of core, including upper clamping plate, middle upper clamping plate, middle lower clamping plate, lower clamping plate, be equipped with sleeve gear, sleeve pillar, upper rotating shaft between upper clamping plate and middle upper clamping plate, be equipped with axle gear, pillar, lower rotating shaft between lower clamping plate and middle lower clamping plate, the upside of upper clamping plate is equipped with adjusting plate, the both ends of adjusting plate are fixed with dial pillar respectively, the inboard of two dial pillars is equipped with two central symmetry's sliding slot, can rotate clockwise or counterclockwise through screw along axle gear hole center, reach the purpose that realizes dial adjustment, the screw passes through adjusting plate and is fixed on upper clamping plate, sleeve gear and axle gear all are fixed with hairspring, the upper rotating shaft and lower rotating shaft all rivet sector gear on, and the upper rotating shaft and lower rotating shaft can realize free rotation together with sector gear, compact structure, compactness and wear resistance are high, and it is convenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of movement technology, specifically a double-layer adjustable precision movement. Background Technology

[0002] Pressure gauges are widely used in various industries such as machinery, chemical industry, and transportation. However, the instrument mechanisms currently used in transportation and railway systems have the following drawbacks: 1. The dial is directly fixed to the clamping plate of the mechanism, making it impossible to adjust and inflexible; 2. The welding between the sealing plate and the Bourdon tube is unreliable, resulting in inflexible adjustment. Summary of the Invention

[0003] The purpose of this invention is to provide a double-layer adjustable precision movement to solve the problems mentioned in the background art.

[0004] This utility model provides a double-layer adjustable precision movement comprising an upper plate, a middle upper plate, a middle lower plate, and a lower plate. A sleeve gear, a sleeve support, and an upper rotating shaft are provided between the upper plate and the middle upper plate. A shaft gear, a support, and a lower rotating shaft are provided between the lower plate and the middle lower plate. An adjusting plate is provided on the upper side of the upper plate, and a dial support is fixed to each of the two ends of the adjusting plate. Two centrally symmetrical sliding grooves are provided on the inner sides of the two dial supports, allowing them to rotate clockwise or counterclockwise along the center of the shaft gear hole using screws. To achieve the purpose of dial adjustment, the screw passes through the adjustment plate and is fixed on the upper clamping plate. The sleeve gear has an inner hole. The lower end of the shaft gear is hinged to the lower clamping plate, and the upper end passes through the middle and lower clamping plates, the middle and upper clamping plates, the inner hole of the sleeve gear, the upper clamping plate, and the adjustment plate. Both the sleeve gear and the shaft gear are fixed with a hairspring. The support is riveted to the lower clamping plate. Sector gears are riveted on both the upper and lower rotating shafts, and the upper and lower rotating shafts can rotate freely together with the sector gears. The sector gears are connected to a pull tab.

[0005] The sleeve support and the support are both provided in pairs.

[0006] The sleeve support is fixedly connected to the upper clamp and the adjusting plate by fastening screws.

[0007] The sector gear includes a meshing part, a connecting part, and a transmission part. The meshing part is sector-shaped, and the transmission part is disc-shaped. The meshing part and the transmission part are integrally connected, and the transmission part is connected in the middle position between the meshing part and the connecting part. The connecting part is U-shaped hook-shaped.

[0008] The meshing part is provided with a triangular adjustment hole. One end of the pull tab is riveted to the connecting part of the sector gear by a rivet, and the other end is riveted to the sealing piece by a rivet, so that the pull tab can rotate freely in the truncated cone of the rivet.

[0009] The outer end of the sealing sheet is connected to the spring tube.

[0010] The sealing sheet is sheet-shaped at one end and curved at the other end, with the two sheets arranged perpendicular to each other.

[0011] The spiral spring is provided with two springs, which are fixed to the sleeve gear and the shaft gear respectively by the spring holder. The outer ends are fixed to the sleeve support and the support respectively by the groove. Both the sleeve gear and the shaft gear can rotate freely.

[0012] The double-layer adjustable precision movement provided by this utility model has the following advantages: it has a compact structure, high tightness and wear resistance. The adjustment plate allows the dial to rotate in the clockwise and counterclockwise directions, causing the pointer to move relative to the dial, thus achieving fine-tuning and calibration and improving accuracy. The sealing plate has two sheet-like ends, which are easy to weld to the spring tube, making it more robust and reliable. The adjustment is also flexible and convenient, greatly improving assembly efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 yes Figure 1 AA section view; In the diagram: 1. Support column; 2. Sleeve support column; 3. Lower clamping plate; 4. Upper clamping plate; 5. Middle and upper clamping plate; 6. Shaft gear; 7. Middle and lower clamping plate; 8. Sleeve gear; 9. Hairspring; 10. Lower rotating shaft; 11. Sector gear; 12. Rivet; 13. Pull tab; 14. Sealing plate; 15. Adjusting plate; 16. Dial support column; 17. Screw; 18. Connecting part; 19. Upper rotating shaft; 20. Slide groove. Detailed Implementation

[0014] The double-layer adjustable precision movement provided by this utility model will now be described in detail with reference to the accompanying drawings and an embodiment.

[0015] Example Reference Figures 1-2The double-layer adjustable precision movement of this embodiment includes an upper plate 4, a middle upper plate 5, a middle lower plate 7, and a lower plate 3. A sleeve gear 8, a sleeve support 2, and an upper rotating shaft 19 are provided between the upper plate 4 and the middle upper plate 5. A shaft gear 6, a support 1, and a lower rotating shaft 10 are provided between the lower plate 3 and the middle lower plate 7. An adjusting plate 15 is provided on the upper side of the upper plate 4. A dial support 16 is fixed to each of the two ends of the adjusting plate 15. Two centrally symmetrical sliding grooves 20 are provided on the inner sides of the two dial supports 16. These grooves can be rotated clockwise or counterclockwise along the center of the hole of the shaft gear 6 by screws 17. To achieve the purpose of dial adjustment, the screw 17 passes through the adjusting plate 15 and is fixed on the upper clamping plate. The sleeve gear 8 has an inner hole. The lower end of the shaft gear 6 is hinged to the lower clamping plate 3, and the upper end passes through the middle lower clamping plate 7, the middle upper clamping plate 5, the inner hole of the sleeve gear 8, the upper clamping plate 4, and the adjusting plate 15. Both the sleeve gear 8 and the shaft gear 6 are fixed with a hairspring 9. The support column 1 is riveted to the lower clamping plate 3. The upper rotating shaft 19 and the lower rotating shaft 10 are both riveted with sector gears 11, and the upper rotating shaft 19 and the lower rotating shaft 10 can rotate freely together with the sector gears 11. The sector gears 11 are connected to the pull tab.

[0016] Both the sleeve support 2 and the support 1 are provided in twos.

[0017] The sleeve support 2 is fixedly connected to the upper clamping plate 4 and the adjusting plate 15 by fastening screws 17.

[0018] The sector gear 11 includes a meshing part, a connecting part, and a transmission part. The meshing part is sector-shaped, and the transmission part is disc-shaped. The meshing part and the transmission part are integrally connected, and the transmission part is connected in the middle position between the meshing part and the connecting part. The connecting part 18 is U-shaped hook-shaped.

[0019] The meshing part is provided with a triangular adjustment hole. One end of the pull tab 13 is riveted to the connecting part of the sector gear 11 by a rivet 12, and the other end is riveted to the sealing piece 14 by a rivet 12, so that the pull tab 13 can rotate freely in the truncated cone of the rivet 12.

[0020] The outer end of the sealing piece 14 is connected to the spring tube.

[0021] There are two hairsprings 9. The two hairsprings 9 are fixed to the sleeve gear 8 and the shaft gear 6 respectively through the hairspring seat. The outer ends are fixed to the sleeve support 2 and the support 1 respectively through the groove. Both the sleeve gear 8 and the shaft gear 6 can rotate freely.

[0022] The working principle of the dual-layer adjustable precision movement in this embodiment is as follows: The sealing piece 14 connected by the Bourdon tube is displaced under external force, causing it to be transmitted through the pull tab 13. This drives the sector gear 11 to mesh with the sleeve gear 8 and the shaft gear 6, thus rotating the pointer fixed on the sleeve gear 8 and the shaft gear 6 to indicate the reading. In addition, the hook at the tail of the sector gear 8 and the sealing piece 14 both have a certain adjustment effect on the speed of pointer rotation. Since the dial support 16 on the adjusting plate 15 is fixed to the movement dial, when the adjusting plate rotates clockwise or counterclockwise, the relative position or value of the dial and the pointer is adjusted to correct the indication deviation and achieve the calibration purpose.

Claims

1. A double-layer adjustable precision movement, comprising an upper plate, a middle upper plate, a middle lower plate, and a lower plate, characterized in that: A sleeve gear, a sleeve support, and an upper rotating shaft are provided between the upper clamping plate and the middle upper clamping plate. A shaft gear, a support, and a lower rotating shaft are provided between the lower clamping plate and the middle lower clamping plate. An adjusting plate is provided on the upper side of the upper clamping plate. A dial support is fixed at each end of the adjusting plate. Two centrally symmetrical sliding grooves are provided on the inner sides of the two dial supports. The sleeve gear has an inner hole. The lower end of the shaft gear is hinged to the lower clamping plate, and the upper end passes through the middle lower clamping plate, the middle upper clamping plate, the inner hole of the sleeve gear, the upper clamping plate, and the adjusting plate. Both the sleeve gear and the shaft gear are fixed with a hairspring. The support is riveted to the lower clamping plate. Sector gears are riveted to both the upper and lower rotating shafts. The sector gears are connected to pull tabs.

2. The double-layer adjustable precision movement according to claim 1, characterized in that: The sleeve support and the support are both provided in pairs.

3. The double-layer adjustable precision movement according to claim 1, characterized in that: The sleeve support is fixedly connected to the upper clamp and the adjusting plate by fastening screws.

4. The double-layer adjustable precision movement according to claim 1, characterized in that: The sector gear includes a meshing part, a connecting part, and a transmission part. The meshing part is sector-shaped, and the transmission part is disc-shaped. The meshing part and the transmission part are integrally connected, and the transmission part is connected in the middle position between the meshing part and the connecting part. The connecting part is U-shaped hook-shaped.

5. The double-layer adjustable precision movement according to claim 4, characterized in that: The meshing part is provided with a triangular adjustment hole. One end of the pull tab is riveted to the connecting part of the sector gear by a rivet, and the other end is riveted to the sealing piece by a rivet, so that the pull tab can rotate freely in the truncated cone of the rivet.

6. The double-layer adjustable precision movement according to claim 5, characterized in that: The outer end of the sealing sheet is connected to the spring tube.

7. The double-layer adjustable precision movement according to claim 1, characterized in that: The spiral spring is provided in two parts. The two spiral springs are fixed to the sleeve gear and the shaft gear respectively through the spiral spring seat, and the outer ends are fixed to the sleeve support and the support respectively through the groove.

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