Limiting plug of well lid lock

Abstract

The utility model discloses a well lid lock limiting plug which comprises an upper lid body, a first abutting strip and a second abutting strip, the first abutting strip and the second abutting strip are formed at the lower end of the upper lid body, an abutting block is installed between the first abutting strip and the second abutting strip and can move up and down, and the first abutting strip and the second abutting strip can move up and down. A first inclined face is formed on the inner side of the first abutting strip, a second inclined face is formed on the inner side of the second abutting strip, and the two sides of the abutting block abut against the first inclined face and the second inclined face respectively. A guide rod is installed between the abutting block and the upper cover body, the lower end of the guide rod is fixedly connected with the abutting block, the upper end of the guide rod is movably inserted into the upper cover body, and the guide rod is sleeved with a pre-tightening spring. Compared with the prior art, according to the well lid lock limiting plug, the pre-tightening spring can abut against the first abutting strip and the second abutting strip, so that the limiting plug is installed more stably, and the stability of a limiting plug product is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of well lid, concretely relates to a well lid lock limiting plug. BACKGROUND

[0002] Well lid is used for covering deep well in road or home, prevents people or objects from falling. According to material, it can be divided into metal well lid, high-strength fiber cement concrete well lid, resin well lid and so on. Generally, it is round. It can be used in green belt, sidewalk, motorway and so on. The existing well lid as shown in patent CN111456102A is locked and fixed together with well seat through fixed bolt, then end cover is covered to prevent the loosening of fastening bolt. But the end cover will be detached and fail due to the vibration of well lid caused by vehicles driving through in the long-term use, and then the fastening bolt is loosened and fails.

[0003] In view of the above defects in the prior art, the present application is developed. SUMMARY

[0004] The main purpose of the utility model is to provide a well lid lock limiting plug, which has the advantages of stable connection and good stability.

[0005] In order to achieve the above purpose, the solution of the utility model is as follows:

[0006] A well lid lock limiting plug, comprising an upper cover body, a first abutting strip and a second abutting strip, the first abutting strip and the second abutting strip are formed at the lower end of the upper cover body, an abutting block is movably installed between the first abutting strip and the second abutting strip, a first inclined surface is formed on the inner side of the first abutting strip, a second inclined surface is formed on the inner side of the second abutting strip, the two sides of the abutting block are respectively abutted on the first inclined surface and the second inclined surface; a guide rod is installed between the abutting block and the upper cover body, the lower end of the guide rod is fixedly connected with the abutting block, the upper end of the guide rod is movably inserted into the upper cover body, a pre-tightening spring is sleeved on the guide rod.

[0007] Further, a guide hole is formed on the upper cover body, the guide rod is movably inserted into the guide hole, the upper end of the pre-tightening spring is abutted on the lower end edge of the guide hole, and the lower end of the pre-tightening spring is abutted on the abutting block.

[0008] Further, the outer walls of the first abutting strip and the second abutting strip are respectively formed with inclined surfaces which are contracted inward from top to bottom.

[0009] Further, the lower end of the first abutting strip is formed with a first clamping block for abutting against the well seat, and the lower end of the second abutting strip is formed with a second clamping block for abutting against the well seat.

[0010] Further, a sinking groove is formed on the upper cover body, and the sinking groove is formed on the upper end of the guide hole.

[0011] Further, a pull ring is installed on the upper end of the guide rod, and the pull ring is installed in the sinking groove.

[0012] Further, a gap groove for allowing the end of a bolt is formed on the lower end of the upper cover body.

[0013] Further, a prompt line is formed on the upper end surface of the upper cover body.

[0014] Further, the upper cover body, the first abutting strip and the second abutting strip are integrally formed.

[0015] After the above structure is adopted, the well lid lock limiting plug has at least the following beneficial effects:

[0016] I. When used, the guide rod is pulled to move the abutting block upward against the resistance of the pre-tightening spring, and then the limiting plug is inserted into the mounting hole reserved on the well lid and well seat, at this time, the first abutting strip and the second abutting strip extend into the well lid, the guide rod is loosened after being installed in place, the guide rod moves downward together with the abutting block, the abutting block or spreads the first inclined surface and the second inclined surface, so that the first abutting strip and the second abutting strip abut against the inner wall of the mounting hole reserved on the well seat, so that the fastening bolt between the well lid and the well seat can be prevented from being offset into the side mounting hole and fail, the pre-tightening spring can continuously provide downward pressure to the abutting block, and the first abutting strip and the second abutting strip can be firmly abutted on the inner wall of the mounting hole of the well seat, so that the stability of the product is greatly improved.

[0017] II. The guide hole and the guide rod can make the abutting block move more stably, and the guide rod can provide lateral support for the pre-tightening spring, so that the pre-tightening spring is prevented from being laterally bent and deformed, and the stability of the product is further improved.

[0018] III. The sinking groove is provided, and the pull ring can be placed in the sinking groove after use, so that the flatness of the surface of the well lid is not affected.

[0019] Compared with the prior art, the well lid lock limiting plug can make the first abutting strip and the second abutting strip abut against each other by the pre-tightening spring, the installation of the limiting plug is more stable, and the stability of the limiting plug product is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the well lid lock limiting plug.

[0021] Figure 2The utility model relates to a sectional view of well lid lock limiting plug part structure.

[0022] Figure 3 It is a perspective view of a well lid lock limiting plug from another angle.

[0023] Figure 4 The utility model relates to a use state diagram of well lid lock limiting plug.

[0024] Figure 5 It is a schematic diagram of well lid.

[0025] In the drawing,

[0026] Upper cover body 1, first top bar 2, second top bar 3,

[0027] Top block 4, guide rod 5, pre-tightening spring 6, inclined plane 7,

[0028] Guide hole 11, sink groove 12, give way slot 13, prompt line 14,

[0029] First inclined plane 21, first clamping block 22,

[0030] Second inclined plane 31, second clamping block 32, pull ring 51,

[0031] Well lid 1000, well seat 2000, fastening bolt 3000, top step 2001. DETAILED DESCRIPTION

[0032] In order to further explain the technical scheme of the utility model, the utility model will be described in detail below through specific embodiments.

[0033] As Figures 1 to 5As shown, it is a kind of well lid lock limiting plug of the utility model, including upper cover body 1, first top bar 2 and second top bar 3, first top bar 2 and second top bar 3 are formed in the lower end of upper cover body 1, first top bar 2 and second top bar 3 between the movable installation of top block 4, the inside of first top bar 2 forms first slope 21, the inside of second top bar 3 forms second slope 31, the both sides of top block 4 are respectively top in first slope 21 and second slope 31;The guiding rod 5 between top block 4 and upper cover body 1 is installed, the lower end of guiding rod 5 is fixedly connected with top block 4, the upper end of guiding rod 5 can be movably inserted in upper cover body 1, pre-tightening spring 6 is sleeved on the guiding rod 5. When using, first, overcome the resistance of pre-tightening spring 6 and pull guiding rod 5 to move top block 4 upwards, then limit plug is inserted into the installation hole reserved on well lid 1000 and well seat 2000, at this time, first top bar 2 and second top bar 3 will extend into well lid 1000, after installation, guiding rod 5 is loosened, guiding rod 5 is lowered together with top block 4, top block 4 or opens first slope 21 and second slope 31, so that first top bar 2 and second top bar 3 can be toped in the inner wall of installation hole reserved in well seat 2000, so that the fastening bolt 3000 between well lid 1000 and well seat 2000 can be avoided to be offset into the side installation hole and fail, pre-tightening spring 6 can continuously provide downward pressure for top block 4, first top bar 2 and second top bar 3 can be firmly toped in the inner wall of installation hole of well seat 2000, greatly improve the stability of product.

[0034] Preferably, the upper cover body 1 is formed with a guide hole 11, the guiding rod 5 is movably inserted into the guide hole 11, the upper end of the pre-tightening spring 6 is toped with the lower end edge of the guide hole 11, and the lower end of the pre-tightening spring 6 is toped with the top block 4. By setting the guide hole 11 and the guiding rod 5, the movement of the top block 4 can be more stable, and the guiding rod 5 can provide lateral support for the pre-tightening spring 6, avoiding the lateral bending deformation of the pre-tightening spring 6, further improving the stability of the product.

[0035] Preferably, as shown in Figure 1 and Figure 2 The outer walls of the first top bar 2 and the second top bar 3 are respectively formed with a slope that shrinks inward from top to bottom. In this way, the first top bar 2 and the second top bar 3 can be more conveniently inserted into the inner wall of the installation hole of the well seat 2000.

[0036] Preferably, the lower end of the first abutment bar 2 is formed with a first locking block 22 for abutting against the well base 2000, and the lower end of the second abutment bar 3 is formed with a second locking block 32 for abutting against the well base 2000. Alternatively, the well base 2000 may be provided with an abutment step 2001 or abutment surface for engaging with the first locking block 22 and the second locking block 32.

[0037] Preferably, such as Figure 2 As shown, a recessed groove 12 is also formed on the upper cover 1, and the recessed groove 12 is formed at the upper end of the guide hole 11. A pull ring 51 is installed at the upper end of the guide rod 5, and the pull ring 51 is installed in the recessed groove 12. By setting the recessed groove 12, the pull ring 51 can be placed flat in the recessed groove 12 after use, without affecting the flatness of the surface of the manhole cover 1000.

[0038] Preferably, the lower end of the upper cover 1 is further provided with a relief groove 13 for accommodating the ends of the fastening bolt 3000. This prevents the two ends of the fastening bolt 3000 from protruding and interfering with the installation of the upper cover 1.

[0039] Preferably, the upper surface of the upper cover 1 is formed with a prompting pattern 14. This allows for the convenient display of relevant prompts or warnings.

[0040] Preferably, the upper cover 1, the first abutting strip 2, and the second abutting strip 3 are integrally formed from plastic or rubber.

[0041] Compared with the prior art, this utility model uses a manhole cover lock limiting plug, which can be abutted against the first abutting bar 2 and the second abutting bar 3 by the pre-tightening spring 6, making the installation of the limiting plug more stable and greatly improving the stability of the limiting plug product.

[0042] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A pit lid lock limit plug, characterized in that, The upper cover body, the first abutting strip and the second abutting strip, the first abutting strip and the second abutting strip are formed at the lower end of the upper cover body, the abutting block is movably installed between the first abutting strip and the second abutting strip, the first inclined surface is formed in the inner side of the first abutting strip, the second inclined surface is formed in the inner side of the second abutting strip, and the two sides of the abutting block are respectively abutted against the first inclined surface and the second inclined surface; the guide rod is installed between the abutting block and the upper cover body, the lower end of the guide rod is fixedly connected with the abutting block, the upper end of the guide rod is movably inserted into the upper cover body, and the pre-tightening spring is sleeved on the guide rod.

2. A limit plug for a manhole cover lock as defined in claim 1, characterized in that The upper cover body is formed with the guide hole, the guide rod is movably inserted into the guide hole, the upper end of the pre-tightening spring is abutted against the lower end edge of the guide hole, and the lower end of the pre-tightening spring is abutted against the abutting block.

3. A limit plug for a manhole cover lock as defined in claim 1, wherein The outer walls of the first abutting strip and the second abutting strip are respectively formed with the inclined surfaces which are inwardly contracted from top to bottom.

4. A pit lid lock check plug as claimed in claim 1, wherein, The lower end of the first abutting strip is formed with the first clamping block for abutting against the well seat, and the lower end of the second abutting strip is formed with the second clamping block for abutting against the well seat.

5. A pit lid lock check plug as defined in claim 2, c h a r a c t e r i s e d in that The upper cover body is further formed with the sunken groove, and the sunken groove is formed at the upper end of the guide hole.

6. A cover lock limiting plug according to claim 5, wherein The upper end of the guide rod is installed with the pull ring, and the pull ring is installed in the sunken groove.

7. A limit plug for a manhole cover lock as defined in claim 1, wherein The lower end of the upper cover body is further formed with the clearance groove for the end portion of the clearance bolt.

8. A limit plug for a manhole cover lock as defined in claim 1, wherein The upper end surface of the upper cover body is formed with the prompt line.

9. A limit plug for a manhole cover lock as defined in claim 1, wherein The upper cover body, the first abutting strip and the second abutting strip are integrally formed.

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