Quick-change type pressure gauge movement

Abstract

The utility model discloses a quick-change type pressure gauge movement which comprises an upper clamping plate, a lower clamping plate, supporting columns, a limiting nail, a shaft gear, a sector gear, a hairspring, a rotating shaft and a pulling piece. The upper clamping plate and the lower clamping plate are fixedly installed through the two supporting columns to form a space, and the shaft gear and the rotating shaft are riveted in the space between the upper clamping plate and the lower clamping plate; the shaft gear and the rotating shaft can rotate freely, the sector gear is riveted to the rotating shaft, one end of the sector gear is in meshing transmission with the shaft gear, the other end of the sector gear is connected with the pull piece, a U-shaped groove is formed in the middle of the pull piece, the tail end of the pull piece is a semicircular flat cutting end and is provided with a round hole, and the end of one end of the shaft gear extends out of the upper clamping plate. The automatic positioning device has the advantages that the automatic positioning device is simple and clear in structure, light, novel and accurate in positioning, and the movement can be quickly and conveniently replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure gauge movement, and in particular relates to a quick-change pressure gauge movement. Background Art

[0002] Pressure gauges are widely used across various industries. As their widespread use continues to deepen, the functional requirements for various instruments are constantly evolving. As a key component of pressure gauges, pressure gauge movements must also be continuously updated to meet these requirements and meet the diverse needs of users. The existing φ40 pressure gauge movement, with its complex structure, low positioning accuracy, and cumbersome replacement, does not meet customer requirements. A lightweight, accurate, and quick-to-change movement is needed. Utility Model Content

[0003] In order to overcome the above technical problems existing in the prior art, the purpose of the present invention is to provide a quick-change pressure gauge movement that is quick and convenient to replace.

[0004] The utility model provides a quick-change pressure gauge movement, including an upper splint, a lower splint, a pillar, a limit pin, a shaft gear, a fan gear, a hairspring, a rotating shaft, and a pull tab. The upper splint and the lower splint are fixedly installed by two pillars to form a space. The shaft gear and the rotating shaft are riveted in the space between the upper splint and the lower splint. The shaft gear and the rotating shaft can rotate freely. The fan gear is riveted on the rotating shaft. One end of the fan gear is engaged with the shaft gear for transmission, and the other end is connected to the pull tab. A U-shaped groove is provided in the middle of the pull tab, and the tail end of the pull tab is a semicircular flat-cut end and is provided with a circular hole. The end of one end of the shaft gear extends out of the upper splint, and the protruding end of the shaft gear has a taper. A limit pin is riveted on the lower splint.

[0005] The protruding end of the shaft gear has a taper of 1:30 and a taper length of 4.5 mm.

[0006] The pull tab is connected to the tail end of the sector gear through a rivet. The pull tab can rotate freely around the rivet. The tail end of the sector gear is in a U-shaped hook shape.

[0007] A circular groove is provided on the pillar close to the shaft gear, the inner ring of the hairspring is riveted on the shaft gear, and the end of the outer ring of the hairspring is riveted in the circular groove of the pillar.

[0008] The upper splint and the lower splint are type, and set symmetrically up and down.

[0009] The quick-change pressure gauge movement provided by the utility model has the beneficial effects of being simple and clear in structure, light and novel, being provided with limiting pins for accurate positioning, and being quick and convenient in movement replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0011] Figure 2 yes Figure 1 AA section view;

[0012] Figure 3 It is a schematic diagram of the structure of the circular sealing component;

[0013] Figure 4 It is a schematic diagram of the side structure of the circular sealing component;

[0014] Note in the figure:

[0015] 1. Lower plate; 2. Support; 3. Limit pin; 4. Shaft gear; 5. Sector gear; 6. Hairspring; 7. Rotating shaft; 8. Pull tab; 9. Rivet; 10. Upper plate; 11. U-shaped groove; 12. Round hole; 13. Round sealing component; 14. Locating pin. DETAILED DESCRIPTION

[0016] The quick-change pressure gauge movement provided by the present invention will be described in detail below with reference to the accompanying drawings and in combination with an embodiment.

[0017] Example

[0018] Reference Figure 1-Figure 2 The quick-change pressure gauge movement of this embodiment includes an upper splint 10, a lower splint 1, a pillar 2, a limit pin 3, a shaft gear 4, a sector gear 5, a hairspring 6, a rotating shaft 7, and a pull tab 8. The upper splint 10 and the lower splint 1 are fixedly installed by two pillars 2 to form a space. The shaft gear 4 and the rotating shaft 7 are riveted in the space between the upper splint 10 and the lower splint 1, and the shaft gear 4 and the rotating shaft 7 can rotate freely. The sector gear 5 is riveted on the rotating shaft 7, one end of the sector gear 5 is engaged with the shaft gear 4 for transmission, and the other end is connected to the pull tab 8. A U-shaped groove 11 is provided in the middle of the pull tab 8, and the tail end of the pull tab 8 is a semicircular flat cut end and is provided with a circular hole 12. The end of one end of the shaft gear 4 extends out of the upper splint 10, and the protruding end of the shaft gear 4 has a taper. The limit pin 3 is riveted on the lower splint 1, which can limit the installation position of the movement.

[0019] The protruding end of the shaft gear 4 has a taper of 1:30 and a taper length of 4.5 mm.

[0020] The pull tab 8 is connected to the tail end of the sector gear 5 through a rivet 9. The pull tab 8 can rotate freely around the rivet 9. The tail end of the sector gear 5 is in a U-shaped hook shape.

[0021] A circular groove is provided on the pillar 2 near the shaft gear 4, the inner ring of the hairspring 6 is riveted to the shaft gear 4, and the end of the outer ring of the hairspring 6 is riveted into the circular groove of the pillar 2, thereby eliminating the tooth side clearance.

[0022] The upper splint 10 and the lower splint 1 are type, and set symmetrically up and down.

[0023] When installing the quick-change pressure gauge movement, refer to Figure 1-Figure 4 First, weld the circular seal component 13 of the existing technology to the pressure gauge spring, position the limit pin on the lower splint, fix the movement with screws through the holes of the two pillars, align the semicircular flat end of the pull-piece with the beveled surface of the circular seal, and insert the positioning pin 14 into the circular hole of the pull-piece. During operation, the circular seal drives the pull-piece to rotate, but it cannot fall out of the groove of the positioning pin. The pull-piece and the circular seal of the existing movement are riveted together by rivets. When replacing, it is necessary to punch out the rivets before replacing. After the movement is replaced, it is necessary to rivet it with new rivets. When disassembling and replacing the movement of the present application, it is only necessary to use a screwdriver to unscrew the screws that fix the movement. The pull-piece can be removed by turning it to a certain angle and completely separated from the circular seal. Assembly, maintenance and replacement are very convenient. The working process after the movement is installed is the same as that of the existing movement, that is, the pressure gauge spring tube is displaced through the circular seal connecting rod, driving the fan gear and the shaft gear to engage in transmission, and the pointer on the tapered part of the upper end of the shaft gear rotates to indicate the value.

Claims

1. A quick-change pressure gauge movement, characterized by: It includes an upper splint, a lower splint, a pillar, a limit pin, a shaft gear, a sector gear, a hairspring, a rotating shaft, and a pull tab. The upper splint and the lower splint are fixedly installed by two pillars to form a space. The shaft gear and the rotating shaft are riveted in the space between the upper splint and the lower splint. The shaft gear and the rotating shaft can rotate freely. The sector gear is riveted on the rotating shaft. One end of the sector gear is engaged with the shaft gear for transmission, and the other end is connected to the pull tab. A U-shaped groove is provided in the middle of the pull tab, and the tail end of the pull tab is a semicircular flat cut end and is provided with a circular hole. The end of one end of the shaft gear extends out of the upper splint, and the protruding end of the shaft gear has a taper. A limit pin is riveted on the lower splint.

2. The quick-change pressure gauge movement according to claim 1, characterized in that: The protruding end of the shaft gear has a taper of 1:30 and a taper length of 4.5 mm.

3. The quick-change pressure gauge movement according to claim 1, characterized in that: The pull tab is connected to the tail end of the sector gear through a rivet. The pull tab can rotate freely around the rivet. The tail end of the sector gear is in a U-shaped hook shape.

4. The quick-change pressure gauge movement according to claim 1, characterized in that: A circular groove is provided on the pillar close to the shaft gear, the inner ring of the hairspring is riveted on the shaft gear, and the end of the outer ring of the hairspring is riveted in the circular groove of the pillar.

5. The quick-change pressure gauge movement according to claim 1, characterized in that: The upper splint and the lower splint are type, and set symmetrically up and down.

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