O-shaped ring replacement tool for maintenance of stroke indicator

Abstract

The utility model discloses an O-shaped ring replacement tool for maintenance of a stroke indicator, which belongs to the technical field of indicator maintenance tools, and comprises an extractor, a limiter and an entering device, the extractor comprises a clamping handle, an extraction clamp is integrally formed at the top end of the clamping handle, the limiter comprises a limiting base, an adjusting structure is arranged at the top end of the limiting base, and the limiting base is provided with a clamping groove. The positioning device comprises a positioning rod, a movable groove is formed in the top end of the positioning rod, a fixing plate is arranged in an inner cavity of the movable groove, a clamping groove is formed in the top end of the fixing plate, a fixing rod is integrally formed at the bottom end of the fixing plate, and a telescopic structure is arranged at the top end of the outer surface of the positioning rod. Therefore, the time spent on replacing the O-shaped ring of the stroke indicator is shortened, the phenomenon of air leakage of the lower part caused by indirect damage to the equipment main body is avoided, the maintenance cost increase caused by damage to the pressure regulator main body is avoided, the maintenance efficiency of the formed indicator is improved, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of indicator maintenance tools, in particular to an O-ring replacement tool for travel indicator maintenance. Background Art

[0002] Since 1998, American Fisher 1098 pressure regulators have been widely used throughout Beijing's urban areas, accounting for over 85% of pressure regulating stations. During routine maintenance, we discovered frequent leaks in the travel indicator area of ​​these regulators. This is because the O-ring in this area has lost its sealing function due to wear and tear. This allows gas to leak into the atmosphere, posing an extremely dangerous hazard and requiring prompt replacement.

[0003] When replacing O-rings, tools such as clamping handles are usually used to install and remove them. Due to the limited operating space, each removal and installation takes a long time, sometimes even several hours. In addition, inappropriate tools can only be used for brute force during the removal process, which indirectly damages the main body of the equipment and makes the equipment unable to meet its required precision requirements. Even if a new sealing ring is replaced, leakage will still occur. If the main body of the pressure regulator is damaged, the maintenance cost will increase, resulting in great waste! At the same time, it also seriously affects work efficiency and increases work intensity.

[0004] According to the announcement number: CN216707197U, a clamping handle includes a clamping assembly and a self-locking mechanism, the clamping assembly includes a first tweezers blade and a second tweezers blade, one end of the first tweezers blade and one end of the second tweezers blade are connected to each other, and the distance between the other end of the first tweezers blade and the other end of the second tweezers blade can be adjusted to clamp the product; the self-locking mechanism includes a bending arm, a connecting rod and an elastic member clamped between the first tweezers blade and the second tweezers blade, one end of the connecting rod is connected to the first tweezers blade, and the other end passes through the first elastic member and the second tweezers blade, the bending arm is rotatably connected to the other end of the connecting rod, the bending arm abuts against the second tweezers blade, when the bending arm is rotated to the locking position, the first tweezers blade and the second tweezers blade are locked in the clamping position, and when the bending arm is rotated to the initial position, the first tweezers blade and the second tweezers blade are reset to the initial position. The clamping handle of the utility model is simple to operate, and the product can be clamped or released by simply rotating the bending arm to the corresponding position, avoiding finger fatigue.

[0005] According to the clamping handle introduced above, when replacing the O-ring, due to reasons such as the narrow operating space, each disassembly and installation takes a long time. In addition, the inappropriate tool can only be used by brute force during the disassembly process, which indirectly causes damage to the main body of the equipment, making the equipment unable to meet the required precision requirements. Even if a new sealing ring is replaced, the lower leakage phenomenon will still occur. Moreover, if the main body of the pressure regulator is damaged, the maintenance cost will increase, and the work efficiency and intensity will be seriously affected. Therefore, it is necessary to propose an O-ring replacement tool for travel indicator maintenance. Utility Model Content

[0006] The purpose of the present utility model is to provide an O-ring replacement tool for travel indicator maintenance. The O-ring can be quickly removed by inserting the extractor into the hole of the indicator cover. During installation, the limiter is taken and inserted from the other end of the hole in the indicator cover to limit the installation position of the O-ring, and the O-ring is placed on the inserter and fixed. The O-ring is placed in the hole of the indicator cover by the inserter, and the other end of the inserter is used to push the O-ring into the placement groove of the indicator cover to complete the replacement, thereby shortening the time required for replacing the O-ring of the travel indicator, avoiding indirect damage to the equipment body causing air leakage below, avoiding damage to the regulator body causing increased maintenance costs, improving the maintenance efficiency of the indicator, reducing work intensity, and then solving the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an O-ring replacement tool for travel indicator maintenance, comprising an extractor, a limiter and a positioner, the extractor comprising a clamping handle, the top end of the clamping handle being integrally formed with a removal clamp, the removal clamp being L-shaped, the limiter comprising a limiting base, the top end of the limiting base being provided with an adjustment structure for adjusting the limiting height of the O-ring, the top end of the adjustment structure being provided with a support column, the positioner comprising a positioning rod, the top end of the positioning rod being provided with a movable groove, the inner cavity of the movable groove being provided with a fixing plate, the top end of the fixing plate being provided with a card groove for fixing the O-ring, the bottom end of the fixing plate being integrally formed with a fixing rod, and the top end of the outer surface of the positioning rod being provided with a telescopic structure for extending and retracting the fixing plate.

[0008] Preferably, the outer side wall of the clamping handle is provided with anti-slip vertical lines, and the anti-slip vertical lines are provided in several groups, and the several groups of anti-slip vertical lines are all located at the top end of the clamping handle.

[0009] Preferably, the adjustment structure includes a threaded column and a threaded sleeve, the top end of the threaded column is fixedly connected to the bottom end of the support column, the outer surface of the threaded column is threadedly connected to the inner cavity of the threaded sleeve, and the threaded sleeve is plugged and fixed to the surface of the limiting base.

[0010] Preferably, a hidden groove is provided on the lower surface of the limiting base, the inner cavity of the hidden groove is communicated with the inner cavity of the threaded sleeve, and the bottom end of the threaded column is fixedly connected with a button block, which is located in the inner cavity of the hidden groove.

[0011] Preferably, the outer surface of the button block is provided with anti-skid bumps, and the anti-skid bumps are provided in several groups, and the anti-skid bumps in several groups are distributed around the center of the circle on the outer surface of the button block.

[0012] Preferably, the telescopic structure includes a lifting seat, which is located in the inner cavity of the movable groove. A positioning groove is provided on the surface of the lifting seat. A spring is provided in the inner cavity of the positioning groove. A steel ball is provided at the other end of the spring. A positioning hole adapted to the steel ball is provided on the outer surface of the positioning rod, and the positioning hole is engaged with the steel ball.

[0013] Preferably, both ends of the lifting seat are fixedly connected with sliders, the inner side wall of the movable groove is provided with a notch adapted to the slider, and the slider is slidably connected to the inner cavity of the notch of the movable groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides an O-ring replacement tool for travel indicator maintenance. The extractor is inserted into the hole of the indicator cover, and the O-ring can be quickly removed. When installing, the limiter is taken and inserted from the other end of the hole in the indicator cover to limit the installation position of the O-ring, and the O-ring is placed on the inserter and fixed. The O-ring is placed in the hole of the indicator cover by the inserter, and the other end of the inserter is used to push the O-ring into the placement groove of the indicator cover to complete the replacement, thereby shortening the time required for replacing the O-ring of the travel indicator, avoiding indirect damage to the equipment body causing air leakage below, avoiding damage to the regulator body causing increased maintenance costs, improving the maintenance efficiency of the formed indicator, and reducing work intensity.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the overall tool of the utility model;

[0018] Figure 2 This is a schematic structural diagram of a partial cross-section of the limiter of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the side view of the extractor of the present invention;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the in-place device of the utility model.

[0021] In the figure: 1. Clamping handle; 2. Removal clamp; 3. Limiting base; 4. Adjustment structure; 41. Threaded column; 42. Threaded sleeve; 5. Support column; 6. Positioning rod; 7. Movable groove; 8. Fixed plate; 9. Card slot; 10. Fixed rod; 11. Telescopic structure; 111. Lifting seat; 112. Positioning groove; 113. Spring; 114. Steel ball; 115. Positioning hole; 12. Anti-slip vertical stripes; 13. Hidden groove; 14. Button block; 15. Anti-slip bump; 16. Slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model provides an O-ring replacement tool for travel indicator maintenance, including an extractor, a limiter and an inserter. The extractor includes a clamping handle 1, the top of the clamping handle 1 is integrally formed with a removal clamp 2, and the removal clamp 2 is L-shaped. The limiter includes a limiting base 3, the top of the limiting base 3 is provided with an adjustment structure 4 for adjusting the limiting height of the O-ring, the top of the adjustment structure 4 is provided with a support column 5, the inserter includes a positioning rod 6, the top of the positioning rod 6 is provided with a movable groove 7, the inner cavity of the movable groove 7 is provided with a fixing plate 8, the top of the fixing plate 8 is provided with a card groove 9 for fixing the O-ring, the bottom end of the fixing plate 8 is integrally formed with a fixing rod 10, and the top of the outer surface of the positioning rod 6 is provided with a telescopic structure 11 for making the fixing plate 8 telescopic.

[0024] When removing, insert the clamping handle 1 into the through hole of the indicator cover, and the removal clamp 2 fits with the O-ring. The O-ring is removed by controlling the removal clamp 2 through the clamping handle 1. When installing, first take the limit base 3 and insert the support column 5 from the other end of the through hole of the indicator cover, so that the support column 5 supports the other end of the O-ring mounting groove in the indicator cover, and then place the O-ring on the fixing plate 8 and fix it through the slot 9. Then take the positioning rod 6 and place the O-ring in the through hole of the indicator cover, and finally flip the positioning rod 6 and push the O-ring into the mounting groove inside the indicator cover through the fixing rod 10 at the other end to complete the installation, thereby shortening the time required to replace the O-ring of the stroke indicator, avoiding indirect damage to the equipment body causing air leakage below, avoiding damage to the voltage regulator body causing increased maintenance costs, improving the maintenance efficiency of the formed indicator, and reducing work intensity.

[0025] The outer wall of the clamping handle 1 is provided with anti-slip vertical grooves 12, and several groups of anti-slip vertical grooves 12 are provided. Several groups of anti-slip vertical grooves 12 are located at the top of the clamping handle 1. Through the setting of the anti-slip vertical grooves 12, the friction between the maintenance personnel's hand and the clamping handle 1 is increased, and the stability of holding the clamping handle 1 is improved.

[0026] The adjustment structure 4 includes a threaded column 41 and a threaded sleeve 42. The top end of the threaded column 41 is fixedly connected to the bottom end of the support column 5. The outer surface of the threaded column 41 is threadedly connected to the inner cavity of the threaded sleeve 42. The threaded sleeve 42 is plugged and fixed to the surface of the limit base 3. Through the threaded connection between the threaded column 41 and the threaded sleeve 42, the threaded column 41 can drive the top support column 5 to move up and down when it rotates, so that the limit height of the support column 5 can be adjusted according to the position of the O-shaped mounting groove.

[0027] A hidden groove 13 is provided on the lower surface of the limit base 3. The inner cavity of the hidden groove 13 is connected to the inner cavity of the threaded sleeve 42. The bottom end of the threaded column 41 is fixedly connected to a button block 14. The button block 14 is located in the inner cavity of the hidden groove 13. The button block 14 is hidden by the hidden groove 13, which improves the stability of the limit base 3 in supporting the indicator cover. The setting of the button block 14 facilitates the maintenance personnel to rotate the threaded column 41 in a new way.

[0028] The outer surface of the button block 14 is provided with anti-slip bumps 15, and the anti-slip bumps 15 are provided in several groups. Several groups of anti-slip bumps 15 are distributed around the center of the circle on the outer surface of the button block 14. Through the provision of the anti-slip bumps 15, the friction between the maintenance personnel's hands and the button block 14 is increased, avoiding slipping during rotation.

[0029] The telescopic structure 11 includes a lifting seat 111, which is located in the inner cavity of the movable groove 7. A positioning groove 112 is provided on the surface of the lifting seat 111. A spring 113 is provided in the inner cavity of the positioning groove 112. A steel ball 114 is provided at the other end of the spring 113. A positioning hole 115 adapted to the steel ball 114 is provided on the outer surface of the positioning rod 6. The positioning hole 115 is engaged with the steel ball 114. There are two groups of positioning holes 115, which are respectively located at the top and bottom ends of the movable groove 7. Press The steel ball 114 moves out of the inner cavity of the positioning hole 115, canceling the positioning of the lifting seat 111. At this time, the fixing plate 8 is pushed by hand to move the lifting seat 111 downward. When the lifting seat 111 drives the steel ball 114 to move to the position of the bottom positioning hole 115, the spring 113 pushes the steel ball 114 to move to the inner cavity of the positioning hole 115, so that the lifting seat 111 is fixed at the position of the bottom end of the movable groove 7, completing the contraction of the fixing plate 8, avoiding the collision of the fixing plate 8 with external objects, resulting in a decrease in the accuracy of the card slot 9.

[0030] Sliders 16 are fixedly connected to both ends of the lifting base 111. The inner wall of the movable groove 7 is provided with a notch adapted to the slides 16. The slides 16 are slidably connected to the inner cavity of the notch of the movable groove 7. The slides 16 cooperate with the notch of the movable groove 7 to support both ends of the lifting base 111 to prevent the angle of the lifting base 111 from shifting when the lifting base 111 moves up and down.

[0031] The method of using the utility model is as follows: when disassembling, take the clamping handle 1 and insert it into the through hole of the indicator cover, and the removal clip 2 is accurately fitted with the O-ring. Then, pinch the clamping handle 1 to clamp the O-ring with the removal clip 2, and the O-ring can be taken out. When installing the O-ring, the rotating knob block 14 drives the threaded column 41 to rotate. Through the cooperation between the threaded column 41 and the threaded sleeve 42, the threaded column 41 drives the support column 5 to move up and down, so that the height of the support column 5 is adjusted according to the height of the O-ring installation groove in the indicator cover. Then, the support column 5 is inserted from the other end into the through hole of the indicator cover to support the bottom end of the installation groove.

[0032] Then, press the steel ball 114 to move out of the inner cavity of the positioning hole 115, pinch the fixing plate 8 to drive the lifting seat 111 to move upward, so that the lifting seat 111 drives the steel ball 114 to move to the positioning hole 115 position at the top, and the spring 113 rebounds to push the steel ball 114 to move to the inner cavity of the positioning hole 115 again to complete the positioning of the lifting seat 111, and then put the O-ring into the card groove 9 on the fixing plate 8 for fixing, take the positioning rod 6 and put the O-ring into the through hole of the indicator cover, and finally turn the positioning rod 6 so that the fixing rod 10 at the other end is inserted into the inner cavity of the through hole of the indicator cover, and push the O-ring to move into the installation groove through the fixing rod 10, so that the O-ring is fitted with the installation groove to complete the installation, thereby shortening the time required for replacing the O-ring of the stroke indicator, avoiding indirect damage to the equipment body causing air leakage below, avoiding damage to the regulator body causing increased maintenance costs, improving the maintenance efficiency of the indicator, and reducing work intensity.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for replacing an O-ring for maintaining a travel indicator, comprising an extractor, a stopper, and an inserter, characterized in that: The extractor comprises a clamping handle (1), the top end of the clamping handle (1) is integrally formed with a removal clamp (2), the shape of the removal clamp (2) is L-shaped, the limiter comprises a limit base (3), the top end of the limit base (3) is provided with an adjustment structure (4) for adjusting the limit height of the O-ring, the top end of the adjustment structure (4) is provided with a support column (5), the inserter comprises a positioning rod (6), the top end of the positioning rod (6) is provided with a movable groove (7), the inner cavity of the movable groove (7) is provided with a fixing plate (8), the top end of the fixing plate (8) is provided with a slot (9) for fixing the O-ring, the bottom end of the fixing plate (8) is integrally formed with a fixing rod (10), and the top end of the outer surface of the positioning rod (6) is provided with a telescopic structure (11) for making the fixing plate (8) telescopic.

2. The O-ring replacement tool for travel indicator maintenance according to claim 1, characterized in that: The outer side wall of the clamping handle (1) is provided with anti-skid vertical lines (12), and the anti-skid vertical lines (12) are provided in several groups, and the several groups of anti-skid vertical lines (12) are all located at the top end of the clamping handle (1).

3. The O-ring replacement tool for travel indicator maintenance according to claim 1, characterized in that: The adjusting structure (4) comprises a threaded column (41) and a threaded sleeve (42); the top end of the threaded column (41) is fixedly connected to the bottom end of the support column (5); the outer surface of the threaded column (41) is threadedly connected to the inner cavity of the threaded sleeve (42); and the threaded sleeve (42) is plugged and fixed to the surface of the limiting base (3).

4. The O-ring replacement tool for travel indicator maintenance according to claim 3, characterized in that: A hidden groove (13) is provided on the lower surface of the position-limiting base (3), the inner cavity of the hidden groove (13) is communicated with the inner cavity of the threaded sleeve (42), and a button block (14) is fixedly connected to the bottom end of the threaded column (41), and the button block (14) is located in the inner cavity of the hidden groove (13).

5. The O-ring replacement tool for travel indicator maintenance according to claim 4, characterized in that: The outer surface of the button block (14) is provided with anti-skid bumps (15), and the anti-skid bumps (15) are provided in a plurality of groups. The plurality of groups of anti-skid bumps (15) are distributed around the center of a circle on the outer surface of the button block (14).

6. The O-ring replacement tool for travel indicator maintenance according to claim 1, characterized in that: The telescopic structure (11) includes a lifting seat (111), the lifting seat (111) is located in the inner cavity of the movable groove (7), a positioning groove (112) is provided on the surface of the lifting seat (111), a spring (113) is provided in the inner cavity of the positioning groove (112), a steel ball (114) is provided at the other end of the spring (113), and a positioning hole (115) adapted to the steel ball (114) is provided on the outer surface of the positioning rod (6), and the positioning hole (115) is engaged with the steel ball (114).

7. The O-ring replacement tool for travel indicator maintenance according to claim 6, characterized in that: Both ends of the lifting seat (111) are fixedly connected with sliders (16), the inner side wall of the movable groove (7) is provided with a notch adapted to the slider (16), and the slider (16) is slidably connected to the inner cavity of the notch of the movable groove (7).

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