Metal wire passing bolt for gas meter

Abstract

The utility model relates to the field of gas meter accessories, and discloses a metal wire passing bolt for a gas meter, which comprises a bolt body, the top end of the bolt body is fixedly connected with a mounting plate, the outer wall of the bolt body penetrates through and is in threaded connection with a nut, and the top end of the mounting plate is fixedly connected with a hexagon bolt head. A fastening mechanism is arranged in the hexagon bolt head and comprises a wire passing hole, the wire passing hole is formed in the inner wall of the hexagon bolt head, the inner wall of the wire passing hole makes contact with a steel wire, a wire fixing groove is formed in the middle of the outer wall of the hexagon bolt head, and a mounting groove is formed in the inner wall, located below the wire fixing groove, of the hexagon bolt head. According to the bolt, the wire passing hole, the steel wire, the wire fixing groove, the mounting groove, the sliding plate, the stop lever and the spring are arranged, so that the steel wire penetrates through the wire passing hole and can be located in the inner area of the stop lever, it is guaranteed that after the bolt is loosened, the steel wire cannot deform greatly, and the fixing effect on the bolt body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of gas meter accessories, in particular to a metal thread-passing bolt for a gas meter. Background Art

[0002] A gas meter, also known as a gas meter or gas meter, is a device used to measure and record the amount of gas (such as natural gas, coal gas, etc.) used. It is usually installed in the gas pipeline system of residential, commercial or industrial sites, and accurately measures the flow and consumption of gas through mechanical or electronic devices.

[0003] In daily life, for the sake of safety and stability, gas meters are often fixed with bolts. Since bolts may become loose after long-term use, in order to prevent the bolts from loosening, small holes are often opened on the heads of the bolts so that a strong and slightly flexible low-carbon steel wire can pass through the small holes. The steel wire is passed through the small holes on all the bolt heads in a specific direction, and finally a closed wire chain is formed. When this group of bolts encounters loads or vibrations during operation, if some of the bolts want to loosen, the steel wire connected in series is like a tight string, which can limit the free rotation of the bolts.

[0004] The existing bolts connected in series by means of metal wires can limit the free rotation of the bolts. However, in actual use, the steel wire is often outside the bolts and it is often difficult to fully tighten the interface with the bolts. Therefore, a metal wire bolt for a gas meter is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a metal wire-passing bolt for a gas meter, aiming to improve the problem of being troublesome when disassembling the gas meter in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a metal wire-passing bolt for a gas meter, comprising a bolt body, the top end of the bolt body is fixedly connected to a mounting plate, the outer wall of the bolt body passes through and is threadedly connected with a nut, the top end of the mounting plate is fixedly connected to a hexagonal bolt head, a fastening mechanism is arranged inside the hexagonal bolt head, the fastening mechanism comprises a wire-passing hole, the wire-passing hole is arranged on the inner wall of the hexagonal bolt head, the inner wall of the wire-passing hole contacts with a steel wire, a wiring groove is arranged in the middle part of the outer wall of the hexagonal bolt head, the inner wall of the hexagonal bolt head below the wiring groove is arranged with a mounting groove, the inner wall of the mounting groove is slidably connected with a slide plate, the top end of the slide plate is fixedly connected with a baffle rod, the bottom end of the slide plate is elastically connected to the inner wall of the mounting groove by a spring, and a downward moving component is arranged on the outside of the slide plate.

[0007] As a further description of the above technical solution:

[0008] The downward moving assembly includes a connecting rod, the rear end of the connecting rod is fixedly connected to the outer wall of the slide, the front end of the connecting rod is fixedly connected to a pressure plate, the top end of the mounting plate is rotatably connected to a fixing block, the inner wall of the pressure plate and the fixing block in the same vertical position is provided with a fixing groove, and the inner wall of the hexagonal bolt head and the connecting rod in the same vertical position is provided with a sliding groove.

[0009] As a further description of the above technical solution:

[0010] A gasket is fixedly connected to the bottom end of the mounting plate, and the gasket is made of soft rubber.

[0011] As a further description of the above technical solution:

[0012] The distance between the blocking rod and the inner wall of the wiring groove is slightly larger than the diameter of the steel wire, and the distance between two blocking rods is larger than twice the diameter of the steel wire.

[0013] As a further description of the above technical solution:

[0014] The portion of the steel wire that is not in contact with the inner wall of the wire-passing hole or the wire-fixing groove is formed by twisting two strands of steel wire into a steel wire with a larger diameter.

[0015] As a further description of the above technical solution:

[0016] The horizontal position of the pressing plate does not exceed the horizontal position of the mounting plate.

[0017] As a further description of the above technical solution:

[0018] The fixing block is in the shape of a cylinder, and the edge of the fixing block is provided with a protrusion with a rounded end.

[0019] As a further description of the above technical solution:

[0020] The shape of the fixing groove is completely consistent with that of the fixing block, and the size of the fixing groove is slightly larger than that of the fixing block.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by arranging the wire hole, the steel wire, the wire groove, the installation groove, the slide plate, the stop rod and the spring, the steel wire can pass through the wire hole and can be in the inner area of ​​the stop rod after the installation is completed, ensuring that when the bolt is loosened and the steel wire is pulled, the steel wire can be blocked by the stop rod and cannot undergo a large deformation, thereby ensuring the fixing effect of the bolt body.

[0023] 2. In the utility model, by setting the connecting rod, the pressure plate, the fixed block, the fixed groove and the sliding groove, it is ensured that during the installation and removal of the steel wire, the blocking rod can be moved downward and the downward state of the blocking rod is kept unchanged, thereby ensuring that during the installation and removal of the steel wire, the blocking rod is not easy to cause obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional view of the overall structure of the utility model;

[0026] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional view of the overall structure of the utility model;

[0027] Figure 4 It is a schematic diagram of a three-dimensional cross-sectional view of the overall structure of the utility model;

[0028] Figure 5 For the utility model Figure 4 A schematic diagram of the enlarged three-dimensional structure of part A.

[0029] Legend:

[0030] 1. Bolt body; 2. Mounting plate; 3. Washer; 4. Nut; 5. Hexagonal bolt head; 6. Fastening mechanism; 61. Wire hole; 62. Steel wire; 63. Wire groove; 64. Mounting groove; 65. Slide plate; 66. Stop rod; 67. Spring; 68. Lowering assembly; 681. Connecting rod; 682. Pressure plate; 683. Fixing block; 684. Fixing groove; 685. Slide groove. DETAILED DESCRIPTION

[0031] 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.

[0032] Reference Figure 1 - Figure 3The utility model provides an embodiment: a metal wire-passing bolt for a gas meter, comprising a bolt body 1, a mounting plate 2 is fixedly connected to the top of the bolt body 1, the diameter of the mounting plate 2 is larger than the diameter of the bolt body 1, a washer 3 is fixedly connected to the bottom end of the mounting plate 2, the material of the washer 3 is soft rubber, and the washer 3 is a circular ring with a through hole having a diameter consistent with the diameter of the bolt body 1 in the middle, through the setting of the washer 3, it is ensured that after the bolt body 1 is tightened, the nut 4 can be tightly attached to the flange without a wedge gap in the middle, the outer wall of the bolt body 1 passes through and is threadedly connected with the nut 4, after tightening, the bolt body 1 exposes zero to three pitches of the nut 4, and the number of pitches exposed by the bolt body 1 after tightening is set to ensure compliance with the requirements of SYIT0460-2018SY / T 0460-2018 "Technical Specifications for Construction of Natural Gas Purification Equipment and Pipeline Installation Engineering", the top of the mounting plate 2 is fixedly connected to a hexagonal bolt head 5, and the shape of the hexagonal bolt head 5 is a hexagonal prism.

[0033] Reference Figure 2 , Figure 3 and Figure 5 A fastening mechanism 6 is provided inside the hexagonal bolt head 5, and the fastening mechanism 6 includes a wire hole 61. The wire hole 61 passes through the center of the hexagonal bolt head 5, and the wire hole 61 is opened on the inner wall of the hexagonal bolt head 5. The inner wall of the wire hole 61 contacts with a steel wire 62, and the diameter of the steel wire 62 matches the diameter of the wire hole 61. A wiring groove 63 is opened in the middle of the outer wall of the hexagonal bolt head 5. The part of the steel wire 62 that does not contact the wire hole 61 or the inner wall of the wiring groove 63 is twisted by two strands of steel wire 62 into a steel wire 62 with a larger diameter. The twisting setting of the steel wire 62 ensures that the diameter of the part that does not contact the wire hole 61 or the wiring groove 63 is larger, and ensures that the steel wire 62 is less likely to deform.

[0034] Reference Figure 3 - Figure 5 An installation groove 64 is provided on the inner wall of the hexagonal bolt head 5 below the alignment groove 63. The shape of the installation groove 64 is annular. A slide plate 65 is slidably connected to the inner wall of the installation groove 64. A baffle 66 is fixedly connected to the top of the slide plate 65. The distance between the baffle 66 and the inner wall of the alignment groove 63 is slightly larger than the diameter of the steel wire 62. By setting the distance, it is ensured that the steel wire 62 can be fixed in the area inside the baffle 66. The bottom end of the slide plate 65 is elastically connected to the inner wall of the installation groove 64 by a spring 67. One end of the spring 67 is fixedly connected to the bottom end of the slide plate 65, and the other end of the spring 67 is fixedly connected to the inner wall of the installation groove 64.

[0035] Reference Figure 2 , Figure 4 and Figure 5, a downward moving assembly 68 is provided on the outside of the slide plate 65, and the downward moving assembly 68 includes a connecting rod 681, the rear end of the connecting rod 681 is fixedly connected to the outer wall of the slide plate 65, the outer wall of the connecting rod 681 passes through the inner wall of the hexagonal bolt head 5, and the front end of the connecting rod 681 is fixedly connected to a pressing plate 682, and the horizontal position of the pressing plate 682 does not exceed the horizontal position of the mounting plate 2. The position setting of the pressing plate 682 ensures that the pressing plate 682 is not easily pressed during normal use. The top of the mounting plate 2 is rotatably connected to a fixing block 683, and the fixing block 683 is in the shape of a cylinder, and the edge of the fixing block 683 has a protrusion with a rounded end. A fixing groove 684 is provided on the inner wall of the pressing plate 682 and the fixing block 683 at the same vertical position, and the shape of the fixing groove 684 is exactly the same as that of the fixing block 683, and the size of the fixing groove 684 is slightly larger than the size of the fixing block 683, and a sliding groove 685 is provided on the inner wall of the hexagonal bolt head 5 and the connecting rod 681 at the same vertical position.

[0036] Working principle: When in use, the staff first passes the bolt body 1 through the flange of the gas meter, and then installs the nut 4 on the outside of the bolt body 1, and makes the bolt body 1 expose zero to three pitches of the nut 4. At the same time, during the installation process, the gasket 3 is squeezed and deformed, so that the gap between the mounting plate 2 and the flange can be filled by the gasket 3 to ensure that there is no wedge gap.

[0037] After the installation is completed, the staff first presses the pressure plate 682 downward so that the fixing groove 684 passes through the fixing block 683 and then rotates the fixing block 683, so that the protrusion of the fixing block 683 rotates to the area where there is no protrusion in the fixing groove 684. Therefore, at this time, the pressure plate 682 cannot move upward under the control of the protrusion of the fixing block 683.

[0038] During the downward movement of the pressure plate 682 , the pressure plate 682 drives the connecting rod 681 to move downward, thereby driving the slide plate 65 to move downward, so that the slide plate 65 drives the blocking rod 66 to move downward, thereby ensuring that the blocking rod 66 will not affect the installation of the steel wire 62 during the installation process.

[0039] After the blocking rod 66 moves downward, the staff passes the steel wire 62 through the wire hole 61, and winds the steel wire 62 passing through the wire hole 61 around the outside of the hexagonal bolt head 5, and makes the steel wire 62 close to the inner wall of the wiring groove 63. When the two ends of the steel wire 62 are in contact, the staff rotates the two ends of the steel wire 62 to form a strand of the steel wire 62, and connects the steel wire 62 with the steel wire 62 on the other bolt body 1 to form a whole, ensuring that they can play a role of mutual restraint when some of the bolts are loose.

[0040] After the steel wire 62 is installed, the staff rotates the fixing block 683 to a position where it is in the same vertical position as the raised part of the fixing groove 684. At this time, the spring 67 drives the slide plate 65 to move upward, so the blocking rod 66 moves to the outer area of ​​the steel wire 62, thereby protecting the steel wire 62 and preventing the steel wire 62 from being deformed after being pulled. At the same time, the slide plate 65 drives the connecting rod 681 and the pressure plate 682 to move upward, so that the pressure plate 682 is reset.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal thread bolt for a gas meter, comprising a bolt body (1), characterized in that: The top end of the bolt body (1) is fixedly connected to a mounting plate (2), a nut (4) is passed through and threadedly connected to the outer wall of the bolt body (1), a hexagonal bolt head (5) is fixedly connected to the top end of the mounting plate (2), a fastening mechanism (6) is provided inside the hexagonal bolt head (5), and the fastening mechanism (6) comprises a wire hole (61), the wire hole (61) is opened on the inner wall of the hexagonal bolt head (5), and the inner wall of the wire hole (61) contacts a steel wire (62). A wiring groove (63) is provided in the middle of the outer wall of the hexagonal bolt head (5); a mounting groove (64) is provided on the inner wall of the hexagonal bolt head (5) below the wiring groove (63); a slide plate (65) is slidably connected to the inner wall of the mounting groove (64); a blocking rod (66) is fixedly connected to the top of the slide plate (65); the bottom end of the slide plate (65) is elastically connected to the inner wall of the mounting groove (64) via a spring (67); and a downward moving component (68) is provided outside the slide plate (65).

2. A metal thread bolt for a gas meter according to claim 1, characterized in that: The downward moving assembly (68) includes a connecting rod (681), the rear end of the connecting rod (681) is fixedly connected to the outer wall of the slide plate (65), the front end of the connecting rod (681) is fixedly connected to a pressure plate (682), the top end of the mounting plate (2) is rotatably connected to a fixing block (683), the inner wall of the pressure plate (682) and the fixing block (683) at the same vertical position is provided with a fixing groove (684), and the inner wall of the hexagonal bolt head (5) and the connecting rod (681) at the same vertical position is provided with a sliding groove (685).

3. The metal thread bolt for a gas meter according to claim 1, characterized in that: A gasket (3) is fixedly connected to the bottom end of the mounting plate (2), and the gasket (3) is made of soft rubber.

4. The metal thread bolt for a gas meter according to claim 1, characterized in that: The distance between the blocking rod (66) and the inner wall of the wiring groove (63) is slightly larger than the diameter of the steel wire (62), and the distance between two blocking rods (66) is larger than twice the diameter of the steel wire (62).

5. The metal thread bolt for a gas meter according to claim 1, characterized in that: The portion of the steel wire (62) that does not contact the inner wall of the wire hole (61) or the wire groove (63) is formed by twisting two strands of steel wire (62) into a steel wire (62) with a larger diameter.

6. A metal thread bolt for a gas meter according to claim 2, characterized in that: The horizontal position of the pressing plate (682) does not exceed the horizontal position of the mounting plate (2).

7. The metal thread bolt for a gas meter according to claim 2, characterized in that: The fixing block (683) is in the shape of a cylinder, and the edge of the fixing block (683) has a protrusion with a rounded end.

8. The metal thread bolt for a gas meter according to claim 2, characterized in that: The shape of the fixing groove (684) is completely consistent with that of the fixing block (683), and the size of the fixing groove (684) is slightly larger than that of the fixing block (683).

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