Urban gas engineering safety protection device

Abstract

The utility model discloses a safety protection device for urban gas engineering. The safety protection device comprises a base, a seat body stabilizing device arranged on the base and a pipeline protection device arranged at the top of the base. The seat body stabilizing devices are respectively vertical to the base; the pipeline protection device comprises a protection sleeve, at least two mounting frames and radial clamping mechanisms, wherein the mounting frames and the radial clamping mechanisms are correspondingly arranged. The mounting frame is positioned between the two adjacent seat body stabilizing devices which are transversely arranged; the opening of the radial clamping mechanism can be freely contracted; and the protective sleeve is sleeved outside the two adjacent gas pipes. By means of the protection sleeve, connection between every two adjacent gas pipelines is achieved; the radial clamping mechanisms are arranged at the two ends of the protective sleeve correspondingly, the protective sleeve is clamped in the radial direction, and therefore the stability of connection between the protective sleeve and the two adjacent gas pipelines is improved; the problem that in the prior art, an urban gas engineering safety protection device cannot effectively clamp a pipeline when the pipeline is installed is solved.

Description

Technical Field

[0001] The present application relates to a safety protection device for urban gas engineering, and belongs to the technical field of gas engineering protection devices. Background Art

[0002] Since the gas pipeline has a long transmission distance and the installed pipeline is easily damaged by weather or environmental influences, it is necessary to use safety protection devices to strengthen the protection of the pipeline sections that are easily damaged.

[0003] At present, pipeline safety protection devices on the market are used by welding the pipeline to make the pipeline one-piece. The disadvantage of this solution is that it is directly welded to the gas pipeline, which is easy to wear the gas pipeline. At the same time, it cannot be clamped during operation, resulting in inconvenience in operation. Utility Model Content

[0004] In view of this, the present application provides a safety protection device for urban gas engineering, which is used to solve the problem that the above-mentioned prior art uses welding to form the pipeline in one piece, resulting in the inability to quickly disassemble the pipeline after it is damaged. The specific solution is:

[0005] A city gas engineering safety protection device comprises: a base, a base body stabilizing device arranged on the base, and a pipeline protection device arranged on the top of the base;

[0006] The seat body stabilizing devices are arranged in a plurality of intervals, and the seat body stabilizing devices are respectively perpendicular to the base and threadedly connected to the base;

[0007] The pipeline protection device includes a protective sleeve, and at least two corresponding mounting frames and radial clamping mechanisms;

[0008] The mounting frame is annular in structure as a whole, and is arranged at intervals along the extension direction of the base. The mounting frame is located between two adjacent base body stabilizing devices arranged transversely, and the mounting frame is installed on the base;

[0009] The radial clamping mechanism is located on the outward side of the mounting frame, and the opening of the radial clamping mechanism can be freely contracted;

[0010] The protective sleeve is sleeved outside two adjacent gas pipes, and the two ends of the protective sleeve are respectively inserted into the two radial clamping mechanisms.

[0011] Preferably, the seat stabilizing device comprises a rotating rod;

[0012] A tension block is arranged at one end of the rotating rod facing the mounting surface, and the other end of the rotating rod passes through the base and is located above the base. The rotating rod moves along the vertical direction of the base, and an opening section is arranged on the outer sleeve of the rotating rod;

[0013] The opening section is installed below the base;

[0014] The tension block is connected to the rotating rod, and the rotating rod rotates downward or upward along the vertical direction of the base, driving the tension block to move up and down along the opening section to achieve the opening or contraction of the opening section. Preferably, a positioning rod is provided on the outer sleeve of one end of the rotating rod located above the base, and the positioning rod is extended, and an operating part is provided on the end of the rotating rod located above the base;

[0015] The positioning rod is located between the operating portion, the opening section and the base, and the bottom end of the positioning rod is connected to the base;

[0016] The positioning rod is threadedly connected to the rotating rod.

[0017] Preferably, a second washer is provided between the positioning rod and the operating portion, and a first washer is provided between the positioning rod and the base;

[0018] The first washer is sleeved outside the positioning rod, the first washer is installed on the base, and the inner side and the outer side of the first washer abut against the positioning rod and the base respectively;

[0019] The second washer is sleeved outside the rotating rod, and two ends of the second washer respectively abut against the operating portion and the positioning rod.

[0020] Preferably, the operating portion is a cross-ring structure.

[0021] Preferably, the radial clamping mechanism comprises three radial adjustment rods;

[0022] The three radial adjustment rods are arranged circumferentially around the protective sleeve, and the three radial adjustment rods are respectively installed in the mounting frame, and one end of the adjacent radial adjustment rods is movably connected in sequence to form a triangular locking opening;

[0023] The end of the protective sleeve is inserted into the triangular locking opening;

[0024] The triangular locking opening is located on the outer end surface of the mounting frame, and the triangular locking opening is sleeved on the outer side of the protective sleeve. The triangular locking opening clamps the protective sleeve by contraction or opening.

[0025] Preferably, the outer ends of the mounting frame are respectively provided with a first annular limiting plate and a second annular limiting plate;

[0026] The first annular limiting plate and the second annular limiting plate are respectively abutted against two end surfaces of the triangular locking opening, and the first annular limiting plate is threadedly connected to the protective sleeve;

[0027] The second annular limiting plate is located on a side of the triangular locking opening facing the mounting frame, and a rubber ring is provided on a side of the second annular limiting plate facing away from the triangular locking opening;

[0028] The rubber ring is sleeved on the protection sleeve, and the rubber ring abuts against the second annular limiting plate.

[0029] Preferably, a sliding groove is provided on one side of the radial adjustment rod facing the triangular locking opening;

[0030] A sliding block is respectively arranged at one end of the radial adjustment rod pointing to the sliding slot of the adjacent radial adjustment rod; and the sliding block is slidably connected with the sliding slot.

[0031] Preferably, the slider and the slide groove are provided with corresponding limiting holes;

[0032] A limiting latch is arranged in the limiting hole, and the slider is fixed in the sliding groove correspondingly through the limiting latch.

[0033] Preferably, the base comprises two bottom plates horizontally arranged along the axial direction of the protective sleeve, and an axial adjustment member and a connecting member located between the two bottom plates;

[0034] The connecting member comprises a connecting plate and a connecting groove, and the connecting plate and the connecting groove are respectively located on two opposite sides of the two bottom plates;

[0035] One side of the connecting plate is mounted on any one side of the two opposite sides of the two bottom plates, the connecting groove is correspondingly arranged on the other side, and the other side of the connecting plate is inserted into the connecting groove;

[0036] The axial adjustment members are provided in two groups, and the two groups of axial adjustment members are correspondingly arranged on both sides of the connecting plate and the connecting groove; the axial adjustment members include a sliding rod and a limiting sliding groove;

[0037] The sliding rod and the limiting sliding groove are arranged on both sides of the connecting rod and the connecting groove;

[0038] The slide bar and the limiting slide groove are respectively located on two opposite sides of the two bottom plates, and the limiting slide groove is embedded in any one opposite side of the two bottom plates;

[0039] One end of the slide bar is correspondingly arranged on the other side opposite to the two bottom plates, and the other end of the slide bar is slidably connected in the limiting slide groove.

[0040] The beneficial effects of this application include:

[0041] The protective sleeve provided in the present application can effectively avoid the problem of pipeline wear caused by direct operation on the gas pipeline while realizing the connection between two adjacent gas pipelines, thereby realizing the protection of the pipeline connection. By arranging radial clamping mechanisms at both ends of the protective sleeve, the protective sleeve is clamped in the forward direction, thereby improving the stability of the connection between the protective sleeve and the two adjacent gas pipelines; and solves the problem in the prior art that the safety protection device of the urban gas project cannot be effectively clamped when installing the pipeline.

[0042] The present application improves the stability of the device in the vertical direction by providing a seat stabilizing device;

[0043] The radial adjustment mechanism is provided to achieve the stability of the radial clamping of the device;

[0044] The stability of the clamping in the axial direction is achieved by means of the provided adjustment assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the structure of a city gas engineering safety protection device for this application;

[0046] Figure 2 This is a schematic diagram of the structure of a connection component in a city gas engineering safety protection device of the present application;

[0047] Figure 3 This is a schematic diagram of the structure of an adjustment component in a city gas engineering safety protection device of the present application;

[0048] Figure 4 This is a schematic diagram of the positions of a first limiting ring, a second limiting ring and a radial adjustment mechanism of a mounting frame in a city gas engineering safety protection device of the present application;

[0049] Figure 5 This is a structural schematic diagram of a seat stabilization mechanism in a city gas engineering safety protection device of the present application.

[0050] List of parts and reference numerals:

[0051] 1. Base; 2. Seat body stabilizing device; 3. Limiting slide groove; 4. Slide rod; 5. Connecting groove; 6. Mounting frame; 7. Protective sleeve; 8. Rubber ring; 9. Second annular limiting plate; 10. First radial adjusting rod; 11. Second radial adjusting rod; 12. Third radial adjusting rod; 13. Slide groove; 14. External thread; 15. First annular limiting plate; 16. Sliding block; 17. Latch; 18. Connecting plate; 19. Elastic block; 20. Operating part; 21. Second washer; 22. Opening section; 23. Limiting groove; 24. Tension block; 25. Rotating rod; 26. First washer; 27. Positioning rod; DETAILED DESCRIPTION

[0052] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0053] According to the attached Figure 1-5 A city gas engineering safety protection device shown includes: a base 1, a base body stabilizing device 2 arranged on the base 1, and a pipeline protection device arranged on the top of the base 1;

[0054] The seat stabilizing devices 2 are arranged at intervals, and the seat stabilizing devices 2 are respectively perpendicular to the base. In this embodiment, four seat stabilizing devices 2 are arranged, and the four seat stabilizing devices 2 are respectively located at the four corners of the entire base 1; the four seat stabilizing devices 2 are respectively installed on the top of the base 1 by bolts / screws, but not limited to them;

[0055] The pipeline protection device comprises a protection sleeve 7, and at least two corresponding mounting frames 6 and a radial clamping mechanism;

[0056] The mounting frame 6 is annular in structure as a whole, and is arranged at intervals along the extension direction of the base 1 (that is, arranged along the axial direction of the gas pipeline), and is located between two adjacent seat body stabilizing devices 2 arranged laterally, and is installed on the base;

[0057] The radial clamping mechanism is located on the outward side of the mounting frame 6, and the opening of the radial clamping mechanism can be freely contracted;

[0058] The protection sleeve 7 is sleeved outside the two adjacent gas pipes and is sealedly connected to the two adjacent gas pipes. Both ends of the protection sleeve 7 are respectively inserted into the two radial clamping mechanisms.

[0059] Furthermore, the seat stabilizing device 2 includes a rotating rod 25;

[0060] The rotating rod 25 has a tension block 24 at one end facing the mounting surface, and the other end of the rotating rod 25 passes through the base 1 and is located above the base. The rotating rod 25 moves along the vertical direction of the base. The rotating rod 25 is perpendicular to the base 1, and an opening section 22 is provided on the outer sleeve of the end of the rotating rod 25 located below the base.

[0061] The top end of the opening section 22 is installed below the base 1, and a plurality of axial limit grooves 23 are provided at one end of the opening section 22 facing the installation surface (the end facing downward), and the limit grooves 23 divide the bottom end of the opening section 22 into an expandable tensioning end;

[0062] The tensioning block 24 is located directly below the opening section 22. The tensioning block 24 is fixedly connected to the rotating rod 25. The rotating rod 25 rotates downward or upward along the vertical direction of the base 1, driving the tensioning block 24 to move up and down along the opening section 22. When the rotating rod 25 rises, it will also drive the tensioning block 24 into the interior of the opening section 22. At the same time, the specifications of the opening section 22 and the tensioning block 24 are the same. After the tensioning block 24 slides into the interior of the opening section 22, the opening section 22 will be driven to open by the inward squeezing force. The opening of the opening section 22 increases the contact area with the mounting surface, thereby improving stability.

[0063] Furthermore, a positioning rod 27 is provided on the outer sleeve of one end of the rotating rod 25 located above the base 1, and the positioning rod is extended out, and an operating part 20 is provided on one end of the rotating rod 25 located above the base 1;

[0064] The operating part 20 is a disc-shaped structure, and the operating part 20 is fixedly connected to the top of the rotating rod 25. A cross groove is provided on the top of the operating part 20. That is, the operating part 20 is a cross-ring structure as a whole. When the city gas project is used for a long time, it will shake. At this time, the personnel can rotate the cross ring to drive the rotating rod 25 to rotate, so as to drive the tension block 24 to slide on the limit groove 23 opened by the opening section 22, so that the tension block 24 can drive the limit groove 23 to open. Further, when the city gas project is used, the stability of the fixed frame can be improved to ensure the overall safety of the engineering facilities.

[0065] The positioning rod 27 is located between the operating portion 20 and the base 1, and the bottom end of the positioning rod 27 is fixedly connected to the base 1;

[0066] The positioning rod 27 is threadedly connected to the rotating rod 25 .

[0067] Furthermore, a second washer 21 is provided between the positioning rod 27 and the operating portion 20, and a first washer 26 is provided between the positioning rod 27 and the base 1;

[0068] The first washer 26 is sleeved outside the positioning rod, and the first washer 26 is installed on the base, and the inner side and the outer side of the first washer 26 abut against the positioning rod 27 and the base 1 respectively;

[0069] The second washer 21 is sleeved outside the rotating rod 25 , and two ends (ie, two end surfaces) of the second washer 21 abut against the bottom end of the operating portion 20 and the top end of the positioning rod 27 respectively.

[0070] Further, the radial clamping mechanism includes three radial adjustment rods;

[0071] The three radial adjustment rods are arranged circumferentially around the protective sleeve, and the three radial adjustment rods are respectively installed in the mounting frame, and one end of the adjacent radial adjustment rods is movably connected in sequence to form a triangular locking opening;

[0072] The end of the protective sleeve 7 is inserted into the triangular locking opening;

[0073] The triangular locking opening is located on the outer end surface of the mounting frame, and the triangular locking opening is sleeved on the outer side of the protective sleeve 7 . The triangular locking opening can clamp the protective sleeve 7 by contraction or opening.

[0074] In this embodiment, the three radial adjustment rods specifically include a first radial adjustment rod 10, a second radial adjustment rod 11 and a third radial adjustment rod 12;

[0075] The first radial adjustment rod 10, the second radial adjustment rod 11 and the third radial adjustment rod 12 are circumferentially arranged around the protective sleeve 7 to form a triangular locking opening, wherein the first radial adjustment rod 10, the second radial adjustment rod 11 and the third radial adjustment rod 12 are respectively provided with a slide groove 13 on one side of the protective sleeve 7 facing the locking opening; one end of the slide groove of the first radial adjustment rod 10 pointing to the second radial adjustment rod 11, one end of the slide groove of the third radial adjustment rod 12 pointing to the first radial adjustment rod 10, and one end of the second radial adjustment rod 11 pointing to the third radial adjustment rod 12 are respectively provided with a slider 16 adapted to the shape and size of the corresponding slide groove; wherein the slider 16 is respectively hinged to the corresponding first radial adjustment rod 10, the second radial adjustment rod 11 and the third radial adjustment rod 12; each slider is slidably connected to the corresponding slide groove, and the size of the triangular locking opening formed by the first radial adjustment rod 10, the second radial adjustment rod 11 and the third radial adjustment rod 12 is adjusted through the sliding connection of the slider in each slide groove, so as to achieve further clamping between the protective sleeve and the gas pipe.

[0076] Further, the mounting frame 6 is a mounting frame; the mounting frame is located between two adjacent seat body stabilizing mechanisms arranged transversely, the mounting frame is installed on the top of the base, and the outer end of the mounting frame (that is, the side opposite to the two mounting frames) is respectively provided with a first annular limiting plate 15 and a second annular limiting plate 9;

[0077] The first annular limiting plate 15 and the second annular limiting plate 9 are both sleeved on the portion of the protective sleeve 7 extending out of the mounting frame, the first annular limiting plate 15 and the second annular limiting plate 9 are respectively abutted against two end surfaces of the triangular locking opening, and the first annular limiting plate 15 is threadedly connected to the protective sleeve 7;

[0078] The protection sleeve 7 is provided with an external thread 14, and the inner side of the first annular limiting plate 15 is provided with an internal thread matching the external thread 14;

[0079] The second annular limiting plate 9 is located on the side of the triangular locking opening facing the mounting frame 6, and a rubber ring 8 is provided on the side of the second annular limiting plate 9 facing away from the triangular locking opening; the rubber ring 8 is located on the inner side of the mounting frame 6, and the rubber ring 8 is sleeved on the protective sleeve 7, and the rubber ring 8 abuts against the second annular limiting plate 9. The first annular limiting plate 15 and the second annular limiting plate 9 are clamped on both sides of the triangular locking opening to prevent the triangular locking opening from axial displacement;

[0080] Furthermore, the slider 16 and the slide slot 13 are provided with limiting holes correspondingly;

[0081] A limiting pin is arranged in the limiting hole, and the two ends of the limiting pin 17 are respectively inserted into the limiting hole of the slider 16 and the limiting hole of the slide groove 13, so as to fix the slider in the corresponding slide groove after the position of the triangular locking mouth is adjusted appropriately.

[0082] During installation, the rubber ring 8 is sleeved on the outside of the protective tube sleeve so that the rubber ring 8 is located on the inner side of the mounting frame; the second annular limiting plate 9 is installed, and one end of the second annular limiting plate 9 facing the rubber ring 8 abuts against the rubber ring 8; then the radial adjustment mechanism composed of the first radial adjustment rod 10, the second radial adjustment rod 11 and the third radial adjustment rod 12 is installed, and the size of the triangular locking opening composed of the first radial adjustment rod 10, the second radial adjustment rod 11 and the third radial adjustment rod 12 is adjusted by moving each slider on the slide groove, so that the triangular locking opening is locked outside the protective tube sleeve; then the limiting pin 17 is inserted into the limiting hole on each slider 16 to fix the slider 16 on the corresponding slide groove; finally, the first annular limiting plate 15 is threadedly connected to the protective sleeve 7, and the side of the triangular locking opening facing away from the second annular limiting plate 9 is clamped.

[0083] Furthermore, the base 1 includes two bottom plates horizontally arranged along the axial direction of the protective sleeve, and an axial adjustment member and a connecting member located between the two bottom plates;

[0084] The connecting member includes a connecting plate 18 and a connecting groove 5, and the connecting plate 18 and the connecting groove 5 are respectively located on two opposite sides of the two bottom plates;

[0085] One side of the connecting plate 18 is installed on any one side of the two opposite sides of the two bottom plates, and the connecting groove 5 is correspondingly arranged on the other side, and the other side of the connecting plate 18 is inserted into the connecting groove 5;

[0086] The axial adjustment members are provided in two groups, and the two groups of axial adjustment members are correspondingly provided on both sides of the connecting plate 18 and the connecting groove 5; the axial adjustment members include a slide rod 4 and a limiting slide groove 3;

[0087] The sliding rod 4 and the limiting sliding groove 3 are arranged on both sides of the connecting rod and the connecting groove;

[0088] The slide bar 4 and the limiting slide groove 3 are respectively located on two opposite sides of the two bottom plates, and the limiting slide groove 3 is embedded in any one opposite side of the two bottom plates;

[0089] One end of the slide rod 4 is correspondingly arranged on the other side opposite to the two bottom plates and fixedly connected to the bottom plates, and the other end of the slide rod 4 is slidably connected in the limiting slide groove 3 .

[0090] Elastic blocks 19 are respectively disposed on opposite sides of the connecting plate 18, and two side walls of the connecting groove 5 are provided with bayonet holes that match the position and shape of the elastic blocks 19;

[0091] The elastic block 19 includes a spring and a block, and installation cavities are correspondingly arranged on the two opposite side walls of the connecting plate 18; the spring is located in the installation cavity, one end of the spring is fixedly connected in the installation cavity, and the other end of the spring is connected to the block, and the block is partially inserted into the installation cavity. When the spring is fully compressed, the block is squeezed and can be completely retracted into the installation cavity.

[0092] In this embodiment, the length of the connecting plate 18 inserted into the connecting groove 5 is adjusted through the sliding rod 4 and the limiting sliding groove 3, so as to adjust the connection distance between the two base plates. After the connecting plate 18 is inserted into the connecting groove 5, the elastic clamping block 19 is correspondingly engaged in the clamping groove to improve the stability of the connection between the connecting plate 18 and the connecting groove 5.

[0093] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A safety protection device for urban gas engineering, characterized in that: include: A base, a base body stabilizing device disposed on the base, and a pipeline protection device disposed on the top of the base; The seat body stabilizing devices are arranged in a plurality of intervals, and the seat body stabilizing devices are respectively perpendicular to the base and are threadedly connected to the base; The pipeline protection device includes a protective sleeve, and at least two corresponding mounting frames and radial clamping mechanisms; The mounting frame is annular in structure as a whole, and is arranged at intervals along the extension direction of the base. The mounting frame is located between two adjacent base body stabilizing devices arranged transversely, and the mounting frame is installed on the base; The radial clamping mechanism is located on the outward side of the mounting frame, and the opening of the radial clamping mechanism can be freely contracted; The protective sleeve is sleeved outside two adjacent gas pipes, and the two ends of the protective sleeve are respectively inserted into the two radial clamping mechanisms.

2. A city gas engineering safety protection device according to claim 1, characterized in that: The seat stabilizing device comprises a rotating rod; A tension block is arranged at one end of the rotating rod facing the mounting surface, and the other end of the rotating rod passes through the base and is located above the base. The rotating rod moves along the vertical direction of the base, and an opening section is arranged on the outer sleeve of the rotating rod; The opening section is installed below the base; The tension block is connected to the rotating rod, and the rotating rod rotates downward or upward along the vertical direction of the base, driving the tension block to move up and down along the opening section to achieve the opening or contraction of the opening section.

3. A city gas engineering safety protection device according to claim 2, characterized in that: The end of the rotating rod located above the base is provided with a positioning rod on the outer sleeve, and the positioning rod is extended out, and the end of the rotating rod located above the base is provided with an operating part; The positioning rod is located between the operating portion, the opening section and the base, and the bottom end of the positioning rod is connected to the base; The positioning rod is threadedly connected to the rotating rod.

4. A city gas engineering safety protection device according to claim 3, characterized in that: A second washer is provided between the positioning rod and the operating portion, and a first washer is provided between the positioning rod and the base; The first washer is sleeved outside the positioning rod, the first washer is installed on the base, and the inner side and the outer side of the first washer abut against the positioning rod and the base respectively; The second washer is sleeved outside the rotating rod, and two ends of the second washer respectively abut against the operating portion and the positioning rod.

5. A city gas engineering safety protection device according to claim 3, characterized in that: The operating part is a cross ring structure.

6. A city gas engineering safety protection device according to claim 1, characterized in that: The radial clamping mechanism includes three radial adjustment rods; The three radial adjustment rods are arranged circumferentially around the protective sleeve, and the three radial adjustment rods are respectively installed in the mounting frame, and one end of the adjacent radial adjustment rods is movably connected in sequence to form a triangular locking opening; The end of the protective sleeve is inserted into the triangular locking opening; The triangular locking opening is located on the outer end surface of the mounting frame, and the triangular locking opening is sleeved on the outer side of the protective sleeve. The triangular locking opening clamps the protective sleeve by contraction or opening.

7. A city gas engineering safety protection device according to claim 6, characterized in that: The outer ends of the mounting frame are respectively provided with a first annular limiting plate and a second annular limiting plate; The first annular limiting plate and the second annular limiting plate are respectively abutted against two end surfaces of the triangular locking opening, and the first annular limiting plate is threadedly connected to the protective sleeve; The second annular limiting plate is located on a side of the triangular locking opening facing the mounting frame, and a rubber ring is provided on a side of the second annular limiting plate facing away from the triangular locking opening; The rubber ring is sleeved on the protection sleeve, and the rubber ring abuts against the second annular limiting plate.

8. A city gas engineering safety protection device according to claim 6, characterized in that: The radial adjustment rod is provided with a sliding groove on one side facing the triangular locking opening; A sliding block is respectively arranged at one end of the radial adjustment rod pointing to the sliding slot of the adjacent radial adjustment rod; and the sliding block is slidably connected with the sliding slot.

9. A city gas engineering safety protection device according to claim 8, characterized in that: The slider and the slide groove are provided with corresponding limited holes; A limiting latch is arranged in the limiting hole, and the slider is fixed in the sliding groove correspondingly through the limiting latch.

10. A city gas engineering safety protection device according to claim 1, characterized in that: The base comprises two bottom plates horizontally arranged along the axial direction of the protective sleeve, and an axial adjustment member and a connecting member located between the two bottom plates; The connecting member comprises a connecting plate and a connecting groove, and the connecting plate and the connecting groove are respectively located on two opposite sides of the two bottom plates; One side of the connecting plate is mounted on any one side of the two opposite sides of the two bottom plates, the connecting groove is correspondingly arranged on the other side, and the other side of the connecting plate is inserted into the connecting groove; The axial adjustment members are provided in two groups, and the two groups of axial adjustment members are correspondingly arranged on both sides of the connecting plate and the connecting groove; the axial adjustment members include a sliding rod and a limiting sliding groove; The sliding rod and the limiting sliding groove are arranged on both sides of the connecting rod and the connecting groove; The slide bar and the limiting slide groove are respectively located on two opposite sides of the two bottom plates, and the limiting slide groove is embedded in any one opposite side of the two bottom plates; One end of the slide bar is correspondingly arranged on the other side opposite to the two bottom plates, and the other end of the slide bar is slidably connected in the limiting slide groove.

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