Adjustable mechanism for clamping well lid

Abstract

The utility model provides an adjustable mechanism for clamping a well lid, which relates to the technical field of well lid production and comprises a bottom plate, through holes are formed in two side walls of the bottom plate, internal thread bushings are rotatably connected to the interiors of the through holes, one ends of the internal thread bushings extend to the outside of the bottom plate, and the other ends of the internal thread bushings extend to the outside of the bottom plate. A plurality of inner threaded sleeves are arranged on the bottom plate, threaded rods are connected between the inner walls of the multiple inner threaded sleeves in a threaded mode, one ends of the multiple threaded rods correspondingly extend to the inner side of the bottom plate, and spherical sleeves are fixed to one ends of the multiple threaded rods. Then internal thread sleeves on the two sides of the bottom plate are rotated through inner hexagonal sleeves correspondingly, internal screws are driven to stretch out and draw back when the internal thread sleeves rotate, and contact clamping plates can be pushed to the outer surface of the well lid needing to be clamped through stretching out and drawing back of the screws till the contact clamping plates are pressed on the outer surface of the well lid; therefore, multi-point contact can be completed on the outer surface of the well lid to form a constraint surface, and the well lid can be fixed more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover production, in particular to an adjustable mechanism for clamping a manhole cover. Background Art

[0002] Manhole covers are used to cover deep wells on roads or in homes to prevent people or objects from falling. They can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. according to the material. They are generally round. They can be used in green belts, sidewalks, motorway lanes, docks, alleys, etc.

[0003] At present, after the stainless steel manhole cover is cast, it needs to be clamped by a clamping device, and the manhole cover needs to be punched and polished. However, since the outer surface of the manhole cover is curved, the existing clamping equipment uses two fixed-size pressure claws to clamp the manhole cover at two points. The point contact will result in a smaller clamping area and the two clamping claws only constrain the manhole cover in two directions, which makes the clamping of the manhole cover unstable and it is easy to shake during processing. Utility Model Content

[0004] In order to solve the existing technical problems, the utility model provides an adjustable mechanism for clamping a manhole cover. In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0005] An adjustable mechanism for clamping a manhole cover comprises a base plate, both side walls of the base plate are provided with through holes, a plurality of the through holes are rotatably connected to the inside with internal threaded sleeves, one ends of the plurality of internal threaded sleeves extend to the outside of the base plate, a plurality of screws are threadedly connected between the inner walls of the internal threaded sleeves, one ends of the plurality of screws extend to the inner side of the base plate accordingly, a spherical sleeve is fixed to one end of the plurality of screws, and a plurality of hexagonal guide sleeves are equidistantly fixed to the inner walls of both sides of the base plate.

[0006] Optionally, the plurality of hexagonal guide sleeves are correspondingly located at one end of the through hole, and the outer surfaces of the plurality of screw rods close to one end of the spherical sleeve are correspondingly fitted with the inner wall of the hexagonal guide sleeve.

[0007] Optionally, inner walls of the plurality of through holes are provided with annular grooves, and outer surfaces of the plurality of internally threaded sleeves are fixed with limiting rings that are slidably engaged in the annular grooves.

[0008] Optionally, an external hexagonal ring is fixed to the outer surface of each of the plurality of internal threaded sleeves near one end edge, and an internal hexagonal sleeve engaging with the external hexagonal ring is disposed on the outer side of the base plate.

[0009] Optionally, a side opening penetrating to the interior is formed on the outer surface of one side of the multiple spherical sleeves, a sphere is arranged inside the multiple spherical sleeves, a connecting plate extending from the side opening to the outside is fixed to the outer surface of the multiple spheres, and a contact clamp is fixed to one end of the multiple connecting plates.

[0010] Optionally, a plurality of grooves are equidistantly formed on the inner bottom surface of the bottom plate, a through opening is formed on the inner bottom surfaces of the plurality of grooves extending through the bottom of the bottom plate, and guide rollers are rotatably connected between the inner walls on both sides of the plurality of grooves.

[0011] Optionally, guide platforms are fixed to both the front and rear sides of the base plate.

[0012] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0013] 1. In the utility model, the manhole cover to be processed is first placed inside the base plate, and then the internal threaded sleeves on both sides of the base plate are rotated respectively through the internal hexagonal sleeves. When the internal threaded sleeves rotate, the internal screw rods are driven to expand and contract. Through the expansion and contraction of the screw rods, the contact clamping plate can be pushed toward the outer surface of the manhole cover to be clamped until it is pressed on the outer surface of the manhole cover, so that multi-point contact can be completed on the outer surface of the manhole cover to form a constraint surface, making the fixation of the manhole cover more stable.

[0014] 2. In the utility model, when the internal threaded sleeve is rotated, in order to prevent the screw and the internal threaded sleeve from rotating synchronously, the outer surface of one end of the screw close to the spherical sleeve is fitted with the inner wall of the hexagonal guide sleeve, so that the screw can be constrained to prevent the synchronous rotation phenomenon when the internal threaded sleeve rotates. A sphere is arranged inside the spherical sleeve, and the contact clamp is connected to the sphere through a connecting plate, so that when the contact clamp contacts the outer surface of the manhole cover, the contact inclination angle between the contact clamp and the outer surface of the manhole cover can be adjusted by rotating the sphere, so that the contact clamp can better fit the outer surface of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0016] Figure 1 The utility model provides a top-view three-dimensional structural schematic diagram of an adjustable mechanism for clamping a manhole cover;

[0017] Figure 2 The utility model provides a bottom-up stereoscopic structural diagram of an adjustable mechanism for clamping a manhole cover;

[0018] Figure 3 The utility model provides a schematic diagram of a cross-sectional three-dimensional structure of a bottom plate in an adjustable mechanism for clamping a manhole cover;

[0019] Figure 4 For this utility model Figure 3 Magnified view at A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Base plate; 2. Guide platform; 3. Hexagon socket; 4. Groove; 5. Guide roller; 6. Screw; 7. Spherical sleeve; 8. Contact clamp; 9. Through-hole; 10. External hexagonal ring; 11. Through hole; 12. Annular groove; 13. Limiting ring; 14. Hexagon socket guide sleeve; 15. Sphere; 16. Side opening; 17. Connecting plate; 18. Internal threaded sleeve.

[0022] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] The utility model will now be described in further detail with reference to the accompanying drawings.

[0024] Embodiment 1, as Figure 1-4 As shown, the utility model provides a technical solution of an adjustable mechanism for clamping a manhole cover: it includes a base plate 1, both side walls of the base plate 1 are provided with through holes 11, the interiors of multiple through holes 11 are rotatably connected with internal threaded sleeves 18, one ends of multiple internal threaded sleeves 18 extend to the outside of the base plate 1, screws 6 are threadedly connected between the inner walls of the multiple internal threaded sleeves 18, one ends of multiple screws 6 extend to the inner side of the base plate 1 accordingly, spherical sleeves 7 are fixed at one ends of multiple screws 6, and multiple hexagonal guide sleeves 14 are equidistantly fixed to the inner walls of both sides of the base plate 1.

[0025] The effect achieved by the entire embodiment 1 is that when using the present device, the manhole cover to be processed is placed inside the base plate 1, and then the internal threaded sleeves 18 on both sides of the base plate 1 are rotated respectively through the internal hexagonal sleeves 3. When the internal threaded sleeves 18 rotate, the internal screw 6 is driven to extend and retract. Through the extension and retraction of the screw 6, the contact clamping plate 8 can be pushed toward the outer surface of the manhole cover to be clamped until it is pressed onto the outer surface of the manhole cover, thereby completing multi-point contact on the outer surface of the manhole cover to form a constraint surface, making the fixation of the manhole cover more stable.

[0026] Embodiment 2, as Figure 1-4As shown, multiple hexagonal guide sleeves 14 are correspondingly located at one end of the through hole 11, the outer surfaces of multiple screws 6 are close to one end of the spherical sleeve 7 and are correspondingly fitted with the inner wall of the hexagonal guide sleeve 14, the inner walls of multiple through holes 11 are provided with annular grooves 12, the outer surfaces of multiple internal threaded sleeves 18 are fixed with limit rings 13 that slide and engage in the annular groove 12, the outer surfaces of multiple internal threaded sleeves 18 are fixed with external hexagonal rings 10 near one end edge, the outer side of the bottom plate 1 is provided with internal hexagonal sleeves 3 that engage with the external hexagonal ring 10, and multiple spherical sleeves 18 are provided with internal hexagonal sleeves 3 that engage with the external hexagonal ring 10. The outer surface of one side of the sleeve 7 is provided with a side opening 16 that penetrates to the interior, and the interior of the multiple spherical sleeves 7 is provided with a sphere 15. The outer surfaces of the multiple spheres 15 are fixed with connecting plates 17 that extend from the side opening 16 to the outside, and one end of the multiple connecting plates 17 is fixed with a contact clamping plate 8. The inner bottom surface of the bottom plate 1 is provided with multiple grooves 4 at equal intervals, and the inner bottom surfaces of the multiple grooves 4 are provided with through openings 9 that penetrate to the bottom of the bottom plate 1. Guide rollers 5 are rotatably connected between the inner walls of both sides of the multiple grooves 4, and guide platforms 2 are fixed on the front and rear sides of the bottom plate 1.

[0027] The effect achieved by the entire embodiment 2 is that, when the internal threaded sleeve 18 is rotated, in order to prevent the screw 6 from rotating synchronously with the internal threaded sleeve 18, the outer surface of one end of the screw 6 close to the spherical sleeve 7 is fitted with the inner wall of the hexagonal guide sleeve 14, so that the screw 6 can be constrained to prevent the synchronous rotation phenomenon when the internal threaded sleeve 18 rotates. A sphere 15 is arranged inside the spherical sleeve 7, and the contact clamp 8 is connected to the sphere 15 through a connecting plate 17, so that when the contact clamp 8 contacts with the outer surface of the manhole cover, the contact inclination angle between the contact clamp 8 and the outer surface of the manhole cover can be adjusted by rotating the sphere 15, so that the contact clamp 8 can better fit with the outer surface of the manhole cover.

[0028] Working principle: When using this device, first place the manhole cover to be processed inside the bottom plate 1, and then use the inner hexagonal sleeve 3 to rotate the internal threaded sleeves 18 on both sides of the bottom plate 1 respectively. When the internal threaded sleeve 18 rotates, it will drive the internal screw 6 to expand and contract. Through the expansion and contraction of the screw 6, the contact clamping plate 8 can be pushed toward the outer surface of the manhole cover to be clamped until it is pressed on the outer surface of the manhole cover, so that multi-point contact can be completed on the outer surface of the manhole cover to form a constraint surface, making the fixation of the manhole cover more stable. When rotating the internal threaded sleeve 18, in order to prevent the screw 6 from being The sleeve 18 rotates synchronously, and the outer surface of one end of the screw 6 close to the spherical sleeve 7 is fitted with the inner wall of the hexagonal guide sleeve 14, so that the screw 6 can be constrained to prevent synchronous rotation when the internal threaded sleeve 18 rotates. A sphere 15 is arranged inside the spherical sleeve 7, and the contact clamping plate 8 is connected to the sphere 15 through a connecting plate 17, so that when the contact clamping plate 8 contacts the outer surface of the manhole cover, the contact inclination angle between the contact clamping plate 8 and the outer surface of the manhole cover can be adjusted by rotating the sphere 15, so that the contact clamping plate 8 can better fit the outer surface of the manhole cover.

[0029] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. An adjustable mechanism for clamping a manhole cover, comprising a bottom plate (1), characterized in that: Through holes (11) are provided on both side walls of the base plate (1), and a plurality of internal threaded sleeves (18) are rotatably connected inside the through holes (11), and one end of each of the internal threaded sleeves (18) extends to the outside of the base plate (1). Screw rods (6) are threadedly connected between the inner walls of the internal threaded sleeves (18), and one end of each of the screw rods (6) extends to the inner side of the base plate (1), and a spherical sleeve (7) is fixed to one end of each of the screw rods (6). A plurality of internal hexagonal guide sleeves (14) are equidistantly fixed to the inner walls of both sides of the base plate (1).

2. The adjustable mechanism for clamping a manhole cover according to claim 1, characterized in that: The plurality of hexagonal guide sleeves (14) are each correspondingly located at one end of the through hole (11), and the outer surfaces of the plurality of screw rods (6) close to one end of the spherical sleeve (7) are each correspondingly fitted with the inner wall of the hexagonal guide sleeve (14).

3. The adjustable mechanism for clamping a manhole cover according to claim 2, characterized in that: The inner walls of the plurality of through holes (11) are each provided with an annular groove (12), and the outer surfaces of the plurality of internal thread sleeves (18) are each fixed with a limiting ring (13) which is slidably engaged in the annular groove (12).

4. The adjustable mechanism for clamping a manhole cover according to claim 1, characterized in that: An external hexagonal ring (10) is fixed to the outer surface of each of the plurality of internal threaded sleeves (18) near one end edge, and an internal hexagonal sleeve (3) engaging with the external hexagonal ring (10) is arranged on the outer side of the base plate (1).

5. The adjustable mechanism for clamping a manhole cover according to claim 1, characterized in that: The outer surfaces of one side of the plurality of spherical sleeves (7) are each provided with a side opening (16) penetrating to the inside, the interior of the plurality of spherical sleeves (7) is each provided with a sphere (15), the outer surfaces of the plurality of spheres (15) are each fixed with a connecting plate (17) extending from the side opening (16) to the outside, and one end of the plurality of connecting plates (17) is each fixed with a contact clamp (8).

6. The adjustable mechanism for clamping a manhole cover according to claim 1, characterized in that: The bottom surface of the bottom plate (1) is provided with a plurality of grooves (4) at equal intervals, the bottom surfaces of the plurality of grooves (4) are provided with through openings (9) penetrating to the bottom of the bottom plate (1), and guide rollers (5) are rotatably connected between the inner walls on both sides of the plurality of grooves (4).

7. The adjustable mechanism for clamping a manhole cover according to claim 1, characterized in that: Guide platforms (2) are fixed on both the front and rear sides of the bottom plate (1).

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