Wellhead cutting and forming device and construction method thereof

Abstract

The invention discloses a wellhead cutting and forming device and a construction method thereof. The wellhead cutting and forming device comprises a cutting mechanism and a lifting mechanism. The cutting mechanism comprises a bottom plate provided with a first fastener and a cutting steel ring provided with a second fastener. A cutting edge is provided on the upper end of the cutting steel ring. Before paving the pavement structure layer, the bottom plate and the cutting steel ring are fixed above the wellhead. After paving the pavement structure layer, the pavement structure layer directly above the first fastener and the second fastener is removed. The lifting mechanism is connected with the second fastener to lift the cutting steel ring. The cutting edge performs vertical cutting on the pavement structure layer above the wellhead to form a regular wellhead with the same diameter as the wellhead ring. The lifting mechanism is then connected with the first fastener to lift the bottom plate and the pavement structure layer on the bottom plate and take them out together, so that the wellhead ring can be well fitted with the wellhead during subsequent installation, and no secondary filling of mixed materials is required, thereby ensuring the integrity of the pavement structure layer around the wellhead and avoiding settlement of the pavement around the wellhead.

Description

Technical Field

[0001] The present invention relates to the field of road construction, and more specifically, to a wellhead cutting and shaping device and a construction method thereof. Background Art

[0002] At present, in the construction of the pavement structure layer of municipal roads, the wellhead construction within the pavement range basically adopts steel plates to cover the wellhead and then lay the structure layer. After the structure layer is rolled and formed, it is manually excavated to remove the upper structure layer of the wellhead and remove the steel plate, and then the well ring is built or installed. The above-mentioned wellhead construction method will cause huge disturbance to the surrounding structure layer of the wellhead when the pavement structure layer on the wellhead is manually excavated, and the quality of the pavement around the wellhead cannot be guaranteed. At the same time, the formation of manual excavation is uneven, and the hole expansion caused by excavation is serious, which requires secondary filling of the mixture. The post-filled mixture cannot be rolled by a roller, and the integrity with the original pavement structure layer is poor, and the flatness is difficult to control. In addition, the winter in the Northeast is cold, and the alternation of spring and winter will cause the pavement structure to produce freeze-thaw cycles, which is easy to cause the wellhead to sink and the pavement around the wellhead to settle unevenly, seriously affecting the driving comfort and the quality of the pavement around the wellhead. There is currently no effective solution to achieve that the wellhead does not disturb the pavement structure layer around the wellhead in the pavement structure, and the formation is regular and does not require secondary filling. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] Another object of the present invention is to provide a wellhead cutting and forming device and a construction method thereof to solve the technical problem in the prior art that the forming construction of the wellhead cannot ensure the quality and stability of the road surface structure around the wellhead.

[0005] In order to achieve these purposes and other advantages according to the present invention, a wellhead cutting and shaping device is provided, comprising:

[0006] A cutting mechanism, comprising a bottom plate fixed horizontally above the wellhead and a cutting steel ring, the bottom plate being a circular structure, the cutting steel ring being sleeved on the outer circumference of the bottom plate and being slidably connected to the bottom plate, the length of the cutting steel ring being vertically greater than the length of the bottom plate, a cutting edge being arranged at the upper end of the cutting steel ring, a plurality of first fasteners being fixed at the edge of the upper surface of the bottom plate, the first fasteners being evenly distributed along the circumference of the bottom plate, a second fastener being fixed to the inner side of the cutting steel ring corresponding to each first fastener, the second fastener being sleeved outside the first fastener and the lower end of the second fastener being in contact with the upper surface of the bottom plate;

[0007] The lifting mechanism comprises a first lifting rope connected to the first fastener or the second fastener. The lifting mechanism lifts the cutting steel ring or the bottom plate by lifting the first lifting rope.

[0008] Preferably, the first fastener is a first U-shaped ring structure with an opening facing downward, and both ends of the first fastener are respectively fixed to the edges of the upper surface of the base plate, and one end of the second fastener facing the center of the base plate is a second U-shaped ring structure with an opening facing downward, and the lower ends of the second U-shaped rings extend horizontally outward radially toward the base plate to form horizontal portions, and the outer ends of each horizontal portion are respectively fixedly connected to the inner side walls of the cutting steel ring at the corresponding position, and the bottom of the horizontal portion is tightly attached to the upper surface of the base plate, and the first U-shaped ring is located between the two horizontal portions of the corresponding second fastener.

[0009] Preferably, the cross-section of the first fastener in the horizontal plane is an arc-shaped structure with a curvature consistent with that of the cutting steel ring, and the first fastener is arranged close to the inner side wall of the cutting steel ring and is slidably connected to the cutting steel ring.

[0010] Preferably, the lifting mechanism also includes a truck crane, a balancing hanger, and a second lifting rope for connecting the hook of the truck crane and the balancing hanger. A lifting ring is respectively provided on the balancing hanger corresponding to each of the first fasteners, and each lifting ring is connected to the corresponding first fastener or the second fastener through one of the first lifting ropes.

[0011] Preferably, the balancing hanger is arranged directly above the surface layer above the wellhead, the lifting ring is arranged horizontally and the connection point with the first lifting rope is located directly above the corresponding second fastener.

[0012] The present invention also provides a wellhead cutting and forming construction method, comprising the following steps:

[0013] S1. Before paving the pavement structure layer, fix the bottom plate and the cutting steel ring above the wellhead, the bottom plate cover is set above the wellhead, the cutting steel ring is set outside the bottom plate, and the position information of the first fastener and the second fastener is recorded;

[0014] S2, paving the pavement structure layer, after paving is completed, locating the positions of the first fastener and the second fastener, and then removing the pavement structure layer directly above the first fastener and the second fastener;

[0015] S3, using a first lifting rope to connect the second fastener of the cutting steel ring to the lifting mechanism, and then using the lifting mechanism to lift the cutting steel ring upward, so that the cutting edge of the cutting steel ring vertically cuts the pavement structure layer above the wellhead to form a wellhead;

[0016] S4. After the cutting is completed and the cut steel ring is lifted out, the connection between the first lifting rope and the second fastener is released and the first lifting rope is connected to the first fastener. The base plate is lifted upward by the lifting mechanism and taken out together with the pavement structure layer on the base plate, and then the well ring is installed.

[0017] Preferably, in step S1, after fixing the base plate and cutting the steel ring, the coordinates of the first fastener and the second fastener are recorded by an RTK instrument, and after the pavement structure layer is paved and rolled, the positions of the first fastener and the second fastener are located by the RTK instrument.

[0018] Preferably, in step S2, the pavement structure layer directly above the first fastener and the second fastener is removed by manual planing.

[0019] Preferably, in step S1, the cutting diameter of the cutting steel ring is consistent with the outer diameter of the well ring.

[0020] The present invention has at least the following beneficial effects:

[0021] (1) Good operability: No professional training is required. It is only necessary to fix the cutting mechanism before paving the pavement structure layer, and connect the cutting mechanism with the lifting mechanism with the first lifting rope after the pavement structure is rolled.

[0022] (2) Good construction quality: This device can be used together with a paver to ensure the quality of the pavement structure layer paving and rolling. At the same time, it can cut out a regular hole with the same diameter as the well ring, so that the well ring and the wellhead fit well and there is no need to fill the mixture for the second time. This ensures the integrity of the pavement structure layer around the wellhead, avoids settlement of the pavement around the wellhead, improves the driving comfort of vehicles, extends the service life of the road, and reduces the occurrence of traffic accidents.

[0023] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a main structural diagram of the present invention when lifting and cutting a steel ring;

[0025] Figure 2 This is a main structural diagram of the present invention when the base plate is lifted;

[0026] Figure 3 It is a top view of the cutting mechanism of the present invention;

[0027] Figure 4 for Figure 3 AA section structure diagram of the cutting mechanism;

[0028] Figure 5 It is a top view of the balance hanger of the present invention.

[0029] Explanation of the markings in the specification: 1. base plate, 2. cutting steel ring, 3. cutting edge, 4. first fastener, 5. second fastener, 6. lifting mechanism, 7. first lifting rope, 8. second U-shaped ring, 9. horizontal part, 10. truck crane, 11. balancing hanger, 12. second lifting rope, 13. lifting ring, 14. pavement structure layer. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0031] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] like Figure 1-5 As shown, the present invention provides a wellhead cutting and shaping device, comprising:

[0033] A cutting mechanism, comprising a bottom plate 1 and a cutting steel ring 2 fixed horizontally above a wellhead, the bottom plate 1 being a circular structure, the cutting steel ring 2 being sleeved on the outer circumference of the bottom plate 1 and being slidably connected to the bottom plate 1, the length of the cutting steel ring 2 being vertically greater than the length of the bottom plate 1, a cutting edge 3 being provided at the upper end of the cutting steel ring 2, a plurality of first fasteners 4 being fixed at the edge of the upper surface of the bottom plate 1, the first fasteners 4 being evenly distributed along the circumference of the bottom plate 1, a second fastener 5 being fixed to the inner side of the cutting steel ring 2 corresponding to each first fastener 4, the second fastener 5 being sleeved outside the first fastener 4 and the lower end of the second fastener 5 being in contact with the upper surface of the bottom plate 1;

[0034] The lifting mechanism 6 comprises a first lifting rope 7 for connecting with the first fastener 4 or the second fastener 5 . The lifting mechanism 6 lifts the cutting steel ring 2 or the base plate 1 by lifting the first lifting rope 7 .

[0035] The pavement structure layer 14 above the wellhead is cut by using a wellhead cutting and forming device. Before the pavement structure layer 14 is paved, the bottom plate 1 and the cutting steel ring 2 are covered and initially fixed above the wellhead, so that the cutting steel ring 2 is sleeved outside the bottom plate 1, and the positions of the bottom plate 1, the cutting steel ring 2, and the corresponding first fastener 4 and second fastener 5 are located and recorded, that is, the cutting mechanism is first embedded, and the cutting device is cast into two parts, the cutting steel ring 2 and the bottom plate 1, using a 1 cm thick steel plate. A cutting edge 3 is made on the top of the cutting steel ring 2 for subsequent cutting of the wellhead forming part. The cutting diameter of the cutting edge 3, that is, the distance between the cutting position of the cutting edge 3 and the axis of the wellhead, is kept consistent with the outer diameter of the wellhead. The first fastener 4 and the bottom plate 1 are cast as an integral structure, and the second fastener 5 and the inner wall of the cutting steel ring 2 are cast as an integral structure to ensure the connection strength; then the pavement structure layer 14 is paved. After the paving is completed, the positions of the first fastener 4 and the second fastener 5 are located, and then as shown in Figure 1 As shown, the pavement structure layer 14 directly above the first fastener 4 and the second fastener 5 is removed, the first lifting rope 7 is first connected to the second fastener 5 of the cutting steel ring 2, and then the first lifting rope 7 is connected to the driving end of the lifting mechanism 6, and the cutting steel ring 2 is lifted upward by the lifting mechanism 6, so that the cutting edge 3 of the cutting steel ring 2 cuts the pavement structure layer 14 located above the wellhead vertically from bottom to top to form a wellhead. In order to ensure the connection strength and improve the cutting stability, the first lifting rope 7 is preferably a steel wire rope. After the cutting of the cutting steel ring 2 is completed, the cutting steel ring 2 is taken out and removed, and the connection between the first lifting rope 7 and the second fastener 5 is released. Figure 2 As shown, the first lifting rope 7 is connected to the first fastener 4, and then the bottom plate 1 is lifted upward by the lifting mechanism 6, and the bottom plate 1 is taken out together with the pavement structure layer 14 on the bottom plate 1, and the wellhead is cut and formed, and then the well ring is installed. After calculation, it is found that the cylindrical cement-stabilized gravel with a diameter of 1.7m and a thickness of 20cm weighs 0.736t, and the cylindrical steel plate with a diameter of 1.7m and a thickness of 1cm weighs 0.178t, and the total weight is 0.914t. The lifting mechanism 6 can be fully lifted by a truck crane 10 with a weight of more than 5t.

[0036] The present invention has the following technical characteristics:

[0037] (1) Good operability: No professional training is required. The cutting mechanism only needs to be fixed before paving the pavement structure layer 14, and the cutting mechanism and the lifting mechanism 6 can be connected with the first lifting rope 7 after the pavement structure is rolled.

[0038] (2) Good construction quality: This device can be used together with a paver to ensure the paving and rolling quality of the pavement structure layer 14. At the same time, it can cut out a regular hole with the same diameter as the well ring, so that the well ring and the wellhead fit well, and there is no need to fill the mixed material for the second time. This ensures the integrity of the pavement structure layer 14 around the wellhead, avoids settlement of the road surface around the wellhead, improves the driving comfort of vehicles, extends the service life of the road, and reduces the occurrence of traffic accidents.

[0039] In another technical solution, Figure 3 , Figure 5 As shown, the first fastener 4 is a first U-shaped ring structure with an opening facing downward, and both ends of the first fastener 4 are respectively fixed to the edges of the upper surface of the base plate 1, and one end of the second fastener 5 facing the center of the base plate 1 is a second U-shaped ring 8 structure with an opening facing downward, and the lower ends of the second U-shaped ring 8 respectively extend horizontally outward radially toward the base plate 1 to form horizontal portions 9, and the outer ends of each horizontal portion 9 are respectively fixedly connected to the inner side walls of the cutting steel ring 2 at the corresponding position, and the bottom of the horizontal portion 9 is tightly attached to the upper surface of the base plate 1, and the first U-shaped ring is located between the two corresponding horizontal portions 9 of the second fastener 5.

[0040] By setting the first fastener 4 as a first U-shaped ring structure and by setting the end of the second fastener 5 facing the center of the base plate 1 as a second U-shaped ring 8 structure, it is convenient to lift the first lifting rope 7 and find the lifting center to keep it stable without affecting the cutting of the cutting edge 3. By setting the horizontal part 9 of the second fastener 5 and keeping it close to the base plate 1, and limiting the first fastener 4 to the area surrounded by the horizontal part 9 of the second fastener 5, the base plate 1 and the first fastener 4 are limited, and the positions of the first fastener 4 and the second fastener 5 are relatively close, which facilitates the subsequent lifting of the first lifting rope 7.

[0041] In another technical solution, Figure 3 , Figure 5 As shown, the cross-section of the first fastener 4 in the horizontal plane is an arc-shaped structure with a curvature consistent with the cutting steel ring 2. The first fastener 4 is arranged close to the inner wall of the cutting steel ring 2 and is slidably connected to the cutting steel ring 2.

[0042] By setting the first fastener 4 as an arc structure with a certain height, the second fastener 5 of the cutting steel ring 2 can slide vertically along the outer side of the first fastener 4 for a certain distance when being vertically lifted, thereby ensuring that in the initial stage of establishing a connection between the first suspension rope 7 and the second fastener 5, the movement direction and movement stability of the entire cutting steel ring 2 are maintained, which is conducive to maintaining smooth cutting and cutting quality.

[0043] In another technical solution, Figure 1 , Figure 2 , Figure 4As shown, the lifting mechanism 6 also includes a truck crane 10, a balancing hanger 11, and a second lifting rope 12 for connecting the hook of the truck crane 10 and the balancing hanger 11. A lifting ring 13 is respectively provided on the balancing hanger 11 corresponding to each of the first fasteners 4, and each lifting ring 13 is connected to the corresponding first fastener 4 or the second fastener 5 through one of the first lifting ropes 7.

[0044] A balancing hanger 11 is provided and a lifting ring 13 is provided on the balancing hanger 11 to match a second fastener 5 and a first fastener 4 provided corresponding to the second fastener 5. The balancing hanger 11 is moved to the top of the pavement structure layer 14 above the wellhead by the hook of the vehicle-mounted crane 10, so that a lifting ring 13 is located above the corresponding second fastener 5. Then, the first lifting rope 7 is connected between the lifting ring 13 and the corresponding second fastener 5. All the second fasteners 5 are connected at the same time. The second lifting rope 12 is connected to the center position of the balancing hanger 11, so that the cutting steel ring 2 is lifted in a balanced manner as a whole to ensure the cutting path and cutting quality.

[0045] In another technical solution, Figure 1 , Figure 2 , Figure 4 As shown, the balancing hanger 11 is arranged directly above the surface layer above the wellhead, the lifting ring 13 is arranged horizontally and the connection point with the first lifting rope 7 is located directly above the corresponding second fastener 5.

[0046] When the balancing hanger 11 is located directly above the wellhead, by setting the lifting ring 13 of the balancing hanger 11 directly above the second fastener 5, it is convenient to keep the first lifting rope 7 vertical when pulling the cutting steel ring 2 or the base plate 1, so as to smoothly lift the cutting mechanism and avoid hitting the pavement structure layer 14 around the wellhead.

[0047] The present invention also provides a wellhead cutting and forming construction method, comprising the following steps:

[0048] S1. Before paving the pavement structure layer 14, fix the base plate 1 and the cutting steel ring 2 above the wellhead, the base plate 1 is covered above the wellhead, the cutting steel ring 2 is sleeved outside the base plate 1, and the position information of the first fastener 4 and the second fastener 5 is recorded.

[0049] Specifically, after fixing the bottom plate 1 and the cutting steel ring 2, the coordinates of the first fastener 4 and the second fastener 5 are recorded by the RTK instrument, and after the pavement structure layer 14 is paved and rolled, the positions of the first fastener 4 and the second fastener 5 are located by the RTK instrument. The cutting diameter of the cutting steel ring 2 is kept consistent with the outer diameter of the well ring, so that the well ring is directly placed after the wellhead cutting and forming is completed, so that the well ring fits well with the wellhead, and there is no need to fill the mixed material, thereby ensuring the integrity of the pavement structure layer 14 around the wellhead.

[0050] S2, paving the pavement structure layer 14. After the paving is completed, the positions of the first fastener 4 and the second fastener 5 are located, and then the pavement structure layer 14 directly above the first fastener 4 and the second fastener 5 is removed.

[0051] Specifically, the pavement structure layer 14 directly above the first fastener 4 and the second fastener 5 is removed by manual planing. Since the area of ​​the removed pavement structure layer 14 is small, there is no need to introduce additional equipment such as drilling rigs, which improves construction efficiency and avoids disturbance of the pavement structure layer 14 around the wellhead, which is beneficial to ensuring the integrity and stability of the pavement structure layer 14 around the wellhead.

[0052] S3. Use the first lifting rope 7 to connect the second fastener 5 of the cutting steel ring 2 with the lifting mechanism 6, and then use the lifting mechanism 6 to lift the cutting steel ring 2 upward. The cutting edge 3 of the cutting steel ring 2 vertically cuts the pavement structure layer 14 located above the wellhead to form a wellhead.

[0053] S4. After the cutting is completed and the cut steel ring 2 is lifted out, the connection between the first lifting rope 7 and the second fastener 5 is released and the first lifting rope 7 is connected to the first fastener 4. The base plate 1 is lifted upward by the lifting mechanism 6, and the pavement structure layer 14 on the base plate 1 is taken out together, and then the well ring is installed.

[0054] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Wellhead cutting and forming device, It is characterized in that include: A cutting mechanism, comprising a bottom plate fixed horizontally above the wellhead and a cutting steel ring, the bottom plate being a circular structure, the cutting steel ring being sleeved on the outer circumference of the bottom plate and being slidably connected to the bottom plate, the length of the cutting steel ring being vertically greater than the length of the bottom plate, a cutting edge being arranged at the upper end of the cutting steel ring, a plurality of first fasteners being fixed at the edge of the upper surface of the bottom plate, the first fasteners being evenly distributed along the circumference of the bottom plate, a second fastener being fixed to the inner side of the cutting steel ring corresponding to each first fastener, the second fastener being sleeved outside the first fastener and the lower end of the second fastener being in contact with the upper surface of the bottom plate; The lifting mechanism comprises a first lifting rope connected to the first fastener or the second fastener. The lifting mechanism lifts the cutting steel ring or the bottom plate by lifting the first lifting rope.

2. The wellhead cutting and forming device according to claim 1, It is characterized in that The first fastener is a first U-shaped ring structure with an opening facing downward, and both ends of the first fastener are respectively fixed to the edges of the upper surface of the base plate, and one end of the second fastener facing the center of the base plate is a second U-shaped ring structure with an opening facing downward, and the lower ends of the second U-shaped rings extend horizontally outward toward the radial direction of the base plate to form horizontal parts, and the outer ends of each horizontal part are respectively fixedly connected to the inner side walls of the cutting steel ring at the corresponding position, and the bottom of the horizontal part is tightly attached to the upper surface of the base plate, and the first U-shaped ring is located between the two horizontal parts of the corresponding second fastener.

3. The wellhead cutting and forming device according to claim 2, It is characterized in that The cross section of the first fastener in the horizontal plane is an arc-shaped structure with a curvature consistent with that of the cutting steel ring. The first fastener is arranged close to the inner side wall of the cutting steel ring and is slidably connected to the cutting steel ring.

4. The wellhead cutting and forming device according to claim 1, It is characterized in that The lifting mechanism also includes a truck crane, a balancing hanger, and a second lifting rope for connecting the hook of the truck crane and the balancing hanger. A lifting ring is provided on the balancing hanger corresponding to each of the first fasteners, and each lifting ring is connected to the corresponding first fastener or the second fastener through one of the first lifting ropes.

5. The wellhead cutting and forming device according to claim 4, It is characterized in that The balancing hanger is arranged directly above the surface layer above the wellhead, the lifting ring is arranged horizontally and the connection point with the first lifting rope is located directly above the corresponding second fastener.

6. Construction method of wellhead cutting and forming, It is characterized in that The steps include: S1. Before paving the pavement structure layer, fix the bottom plate and the cutting steel ring above the wellhead, the bottom plate cover is set above the wellhead, the cutting steel ring is set outside the bottom plate, and the position information of the first fastener and the second fastener is recorded; S2, paving the pavement structure layer, after paving is completed, locating the positions of the first fastener and the second fastener, and then removing the pavement structure layer directly above the first fastener and the second fastener; S3, using a first lifting rope to connect the second fastener of the cutting steel ring to the lifting mechanism, and then using the lifting mechanism to lift the cutting steel ring upward, so that the cutting edge of the cutting steel ring vertically cuts the pavement structure layer above the wellhead to form a wellhead; S4. After the cutting is completed and the cut steel ring is lifted out, the connection between the first lifting rope and the second fastener is released and the first lifting rope is connected to the first fastener. The base plate is lifted upward by the lifting mechanism and taken out together with the pavement structure layer on the base plate, and then the well ring is installed.

7. The construction method for wellhead cutting and forming as claimed in claim 6, It is characterized in that In step S1, after fixing the base plate and cutting the steel ring, the coordinates of the first fastener and the second fastener are recorded by an RTK instrument. After the pavement structure layer is paved and rolled, the positions of the first fastener and the second fastener are located by the RTK instrument.

8. The construction method for wellhead cutting and forming as claimed in claim 6, It is characterized in that In step S2, the pavement structure layer directly above the first fastener and the second fastener is removed by manual planing.

9. The construction method for wellhead cutting and forming as claimed in claim 6, It is characterized in that In step S1, the cutting diameter of the cutting steel ring is consistent with the outer diameter of the well ring.

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