A digging device for a gas riser installation sleeve

Abstract

A kind of excavating device for gas riser sleeve installation, including cylinder, handle and drilling claw, drilling claw is located at the lower end of cylinder, handle is located at the upper end of cylinder, the cylinder is made of two half circular tubes, the adjacent side of one side of two half circular tubes is hinged by hinged shaft, and the adjacent side of other side is connected by locking device cooperation.This utility model provides a gas riser sleeve installation device, compared with traditional manual excavation mode, with the following remarkable beneficial effects:1, high operating efficiency;2, small excavation amount;3, safe and reliable;4, convenient operation;5, good comprehensive benefit;6, strong applicability.

Description

Technical Field

[0001] This utility model belongs to the field of gas pipeline construction, specifically a digging device for adding a sleeve to a gas riser. Background Technology

[0002] As a crucial section connecting the underground gas pipeline network in courtyards to the indoor gas pipeline network, the safe operation of gas risers directly affects the stability of the entire gas supply system and the safety of users' gas consumption. According to the "Code for Design of Urban Gas Supply" (GB50028-2006), when gas inlet pipes pass through building foundations, walls, or pipe trenches, they must be installed in sleeves, and the impact of settlement should be considered, with compensation measures taken when necessary. In recent years, with the increasing age of urban gas pipeline networks, the lack of sleeve protection for risers constructed in earlier periods has become increasingly prominent, posing safety hazards such as riser subsidence, leakage, and even breakage due to ground settlement.

[0003] Currently, the conventional construction method for installing sleeves on existing risers in the industry mainly relies on manual excavation. The specific process includes: using tools such as pneumatic picks and shovels to break down the concrete pavement or hardened layer, excavating a working pit with a diameter of approximately 0.6 meters, exposing the riser, installing the sleeve, and finally backfilling to restore the pavement. This approach has the following problems: 1. Low work efficiency: Manual excavation takes a long time, with an average of 102 minutes per operation, far exceeding the department's stipulated time limit of 100 minutes, which seriously affects the progress of the project; 2. Excessive excavation area: Traditional methods often require excavating a large working area to facilitate manual operation, which not only damages the road structure and increases restoration costs, but also causes significant disturbance to the surrounding environment. 3. High safety risks: During manual excavation, tools are highly susceptible to bumping and scratching the anti-corrosion layer of the riser pipe, causing damage to the anti-corrosion layer and creating new corrosion hazards. Furthermore, large-scale foundation pits also pose certain operational safety risks. 4. Poor economic efficiency: The operation requires a lot of manpower, and the road surface demolition and restoration costs are high, resulting in a high overall cost for single-point construction.

[0004] Therefore, there is an urgent need for a specialized tool that can significantly reduce the excavation area, improve work efficiency, reduce safety risks, and is easy to operate, in order to meet the standardization and efficiency requirements of gas riser sleeve installation. Utility Model Content

[0005] This utility model provides an excavation device for installing a sleeve on a gas riser, in order to solve the defects in the prior art.

[0006] This utility model is achieved through the following technical solution: A digging device for installing a sleeve on a gas riser includes a cylinder, a handle, and a drilling claw. The drilling claw is located at the lower end of the cylinder, and the handle is located at the upper end of the cylinder. The cylinder is composed of two semi-circular tubes. The adjacent sides of one side of the two semi-circular tubes are hinged by a hinge shaft, and the adjacent sides of the other side are connected by a locking device.

[0007] As described above, a gas riser sleeve installation excavation device includes a locking device comprising two semi-cylinders. The upper ends of the semi-cylinders are respectively fixedly installed with the semi-cylinders, and the two semi-cylinders can form a cylinder. The outer circumference of the cylinder is provided with external threads, and a nut is installed in the threaded fit.

[0008] As described above, a gas riser casing installation excavation device has several through slots on the front side of one side of the semi-circular pipe. A connecting block is movably installed in the through slot. The connecting block is located in the through slot and has a through hole. A hinge shaft is located in the through hole. The hinge shaft is fixedly connected to the left semi-circular pipe, and the connecting block is fixedly connected to the right semi-circular pipe.

[0009] As described above, a gas riser casing installation excavation device has a coaxial annular flange fixed at the upper end of the cylinder. The inner diameter of the annular flange is the same as the inner diameter of the cylinder, and the annular flange is divided into left and right parts along with the semi-circular pipe.

[0010] As described above, a gas riser casing installation excavation device is provided, wherein the handle and the cylinder are connected by a threaded connection, and several short pipes with internal threads are fixedly installed on the cylinder corresponding to the handle. The end of the handle near the short pipe is provided with an external thread, which is connected to the short pipe by a threaded connection.

[0011] As described above, a gas riser casing installation excavation device has a coaxial helical blade fixedly arranged on the inner circumference of the cylinder, and the helical blade is divided into left and right parts along with the semi-circular pipe.

[0012] As described above, in a gas riser casing installation excavation device, the inner diameter of the spiral blade is 4-6 cm wider than the outer diameter of the riser pipe.

[0013] The advantages of this utility model are: Compared with the traditional manual excavation method, the gas riser sleeve installation device provided by this utility model has the following significant advantages: 1. High work efficiency: The use of specialized drilling equipment can quickly complete excavation, shorten construction time, improve construction efficiency, and meet the work time requirements; 2. Small excavation volume: Only a working hole with a diameter of about 10cm is needed around the riser, reducing the excavation area by about 97%, which greatly reduces the damage to the road surface and the cost of repair. 3. Safe and reliable: The cylinder structure can isolate the drilling claw from the riser pipe body, effectively avoiding damage to the anti-corrosion layer during construction and eliminating secondary safety hazards; 4. Easy to operate: The device is lightweight (about 1kg) and can be operated by one person, reducing labor intensity and manpower requirements, and improving the work experience; 5. Excellent overall benefits: It significantly reduces the cost of construction at a single point, while shortening the construction period, reducing disturbance to residents, and improving both economic and social benefits; 6. Strong applicability: Simple structure, low cost, suitable for various road conditions, and easy to promote and use in the gas industry. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Sectional view along line AA; Figure 3 This is a cross-sectional structural schematic diagram of the present invention; Figure 4 yes Figure 1 Enlarged view of section I; Figure 5 yes Figure 2 A magnified view of section II.

[0016] Reference numerals: 1. Cylinder, 2. Handle, 3. Drilling claw, 20. Semi-cylinder, 21. Nut, 30. Through slot, 31. Connecting block, 32. Through hole, 40. Circular flange, 50. Short pipe, 60. Helical blade. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] An excavation device for installing a casing on a gas riser, such as Figure 1 , 2As shown in Figures 3, 4, and 5, the device includes a cylinder 1, a handle 2, and drilling claws 3. The drilling claws 3 are located at the lower end of the cylinder 1, and the handle 2 is located at the upper end of the cylinder 1. Several handles 2 are provided and are evenly distributed circumferentially along the upper outer periphery of the cylinder 1. Several drilling claws 3 are also provided and are evenly distributed circumferentially at the lower end of the cylinder 1. The drilling claws 3 and the sleeve 1 are an integral structure. The cylinder 1 is composed of two semi-circular tubes, which are symmetrical from left to right. Adjacent sides on one side of the two semi-circular tubes are hinged together by a hinge shaft, and adjacent sides on the other side are connected by a locking device. Compared with the traditional manual excavation method, the gas riser sleeve installation device provided by this utility model has the following significant advantages: 1. High work efficiency: The use of specialized drilling equipment can quickly complete excavation, shorten construction time, improve construction efficiency, and meet the work time requirements; 2. Small excavation volume: Only a working hole with a diameter of about 10cm is needed around the riser, reducing the excavation area by about 97%, which greatly reduces the damage to the road surface and the cost of repair. 3. Safe and reliable: The cylinder structure can isolate the drilling claw from the riser pipe body, effectively avoiding damage to the anti-corrosion layer during construction and eliminating secondary safety hazards; 4. Easy to operate: The device is lightweight (about 1kg) and can be operated by one person, reducing labor intensity and manpower requirements, and improving the work experience; 5. Excellent overall benefits: It significantly reduces the cost of construction at a single point, while shortening the construction period, reducing disturbance to residents, and improving both economic and social benefits; 6. Strong applicability: Simple structure, low cost, suitable for various road conditions, and easy to promote and use in the gas industry; When using this utility model, the locking device unlocks the restriction on the two semi-circular tubes, allowing the two semi-circular tubes to rotate along the hinge axis. The cylinder 1 rotates open, and the cylinder 1 is fitted onto the outer circumference of the riser. The locking device then connects the two semi-circular tubes together, maintaining the state of the cylinder 1. Then, the handle 2 is used to press down on the cylinder 1, simultaneously causing the cylinder 1 to rotate along its axis, allowing the drilling claw 3 to drill a hole in the ground until the drilling depth of the cylinder 1 is appropriate, generally 50cm. Then, the cylinder 1 is pulled upwards, causing the soil between the inner side of the cylinder 1 and the outer side of the riser to move out of the hole with the cylinder 1. If soil remains in the hole, other tools are used to clean up the remaining soil.

[0019] Specifically, as shown in the figure, the locking device in this embodiment includes two semi-cylinders 20. The upper ends of the semi-circular tubes are respectively fixedly installed with the semi-cylinders 20. The two semi-cylinders 20 can form a cylinder, and the outer circumference of the cylinder is provided with external threads, which are threadedly fitted with nuts 21. When the two semi-circular tubes form the cylinder 1, the two semi-cylinders 20 form a cylinder. The external threads and nuts 21 are threadedly engaged to fix the two semi-cylinders 20 together, thereby maintaining the semi-circular tubes in the state of the cylinder 1. When the nuts 21 are unscrewed from the cylinders, the semi-cylinders 20 can separate with the semi-circular tubes, and the two semi-circular tubes can rotate along the hinge axis, causing the cylinder 1 to open.

[0020] Specifically, as shown in the figure, in this embodiment, several through slots 30 are opened on the front side of the semi-circular tube on one side. A connecting block 31 is movably installed in the through slot 30. The connecting block 31 is located within the through slot 30, and neither its front nor rear sides protrude from the inner or outer wall of the cylinder 1, reducing the impact of the connecting block 31 on drilling the cylinder 1. A through hole 32 is opened on the connecting block 31, and a hinge shaft is located within the through hole 32. The through hole 32 is coaxially arranged with all the hinge shafts. The hinge shafts are fixedly connected to the semi-circular tube on the left side, and the connecting block 31 is fixedly connected to the semi-circular tube on the right side. The through slots 30 and connecting blocks 31 reduce the impact of the hinge shaft on drilling the cylinder 1.

[0021] Furthermore, as shown in the figure, the upper end of the cylinder 1 in this embodiment is fixedly provided with a coaxial annular protrusion 40. The inner diameter of the annular protrusion 40 is the same as the inner diameter of the cylinder 1. The annular protrusion 40 is divided into left and right parts along with the semicircular tube. When the cylinder 1 is opened, the left and right parts of the annular protrusion 40 move with the corresponding semicircular tubes respectively, dividing into two semicircular rings. The annular protrusion 40 can increase the structural strength of the semicircular tubes, and at the same time facilitates hammering the cylinder 1 into the soil.

[0022] Furthermore, as shown in the figure, in this embodiment, the handle 2 and the cylinder 1 are connected by a threaded connection. Several short tubes 50 with internal threads are fixedly installed on the cylinder 1 corresponding to the handle 2. The end of the handle 2 near the short tubes 50 has an external thread and is connected to the short tubes 50 by a threaded connection. The handle 2 can be detached from the cylinder 1, making it convenient for the cylinder 1 to be stored and carried.

[0023] Furthermore, as shown in the figure, in this embodiment, a coaxial helical blade 60 is fixedly provided on the inner circumference of the cylinder 1. The outer circumference of the helical blade 60 is attached and fixedly connected to the inner circumference of the cylinder 1. The helical blade 60 is divided into left and right parts along with the semi-circular tube. When the semi-circular tube forms the cylinder 1, the half-helical blades of the left and right parts form a complete helical blade 60. When the two cylinders 1 are opened, the half-helical blades of the left and right parts move and separate with the corresponding semi-circular tubes. When the helical blade 60 rotates with the cylinder 1, the helical blade 60 drills into the soil. When the cylinder 1 is pulled upward, it facilitates the removal of soil from the borehole with the cylinder 1. Alternatively, when the helical blade 60 rotates with the cylinder 1, it can generate an upward thrust on the soil, causing the soil to be discharged from the borehole, which facilitates the cleaning of the soil in the borehole.

[0024] Furthermore, as shown in the figure, the inner diameter of the spiral blade 60 in this embodiment is 4-6 cm wider than the outer diameter of the riser pipe. In this embodiment, the inner diameter of the spiral blade 60 is 4 cm wider than the outer diameter of the riser pipe. If the inner diameter of the spiral blade 60 is too small, the drill bit 3 may easily rotate to the anti-corrosion layer of the riser pipe, damaging the anti-corrosion layer and posing a certain safety hazard. If the diameter of the spiral blade 60 is too large, the internal space of the drill hole will be too large, and the riser pipe may easily sway inside the drill hole.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A digging device for gas riser installation, comprising a barrel (1), a handle (2) and a drill claw (3), the drill claw (3) is located at the lower end of the barrel (1), the handle (2) is located at the upper end of the barrel (1), characterized in that: The cylinder (1) is composed of two semi-circular tubes. The adjacent sides of the two semi-circular tubes on one side are hinged by a hinge shaft, and the adjacent sides on the other side are connected by a locking device. The locking device includes two semi-circular cylinders (20). The upper ends of the semi-circular tubes are fixedly installed with the semi-circular cylinders (20). The two semi-circular cylinders (20) can form a cylinder, and the outer circumference of the cylinder is provided with external threads, and the nuts (21) are installed in the threaded fit. Several through slots (30) are opened on the front side of one side of the semi-circular tube. A connecting block (31) is movably provided in the through slot (30). The connecting block (31) is located in the through slot (30). A through hole (32) is opened on the connecting block (31). The hinge shaft is located in the through hole (32). The hinge shaft is fixedly connected to the semi-circular tube on the left side, and the connecting block (31) is fixedly connected to the semi-circular tube on the right side.

2. A gas riser installation device according to claim 1, characterised in that: The upper end of the cylinder (1) is fixedly provided with a coaxial annular protrusion (40). The inner diameter of the annular protrusion (40) is the same as the inner diameter of the cylinder (1). The annular protrusion (40) is divided into left and right parts along with the semi-circular tube.

3. A gas riser installation device according to claim 1, characterised in that: The handle (2) is threadedly connected to the cylinder (1). Several short tubes (50) with internal threads are fixedly installed on the cylinder (1) corresponding to the handle (2). The end of the handle (2) near the short tube (50) has an external thread and is threadedly connected to the short tube (50).

4. A gas riser installation device according to claim 1, characterized in that: The inner circumference of the cylinder (1) is fixedly provided with coaxial spiral blades (60), and the spiral blades (60) are divided into left and right parts along with the semi-circular tube.

5. A gas riser installation device according to claim 4, characterised in that: The inner diameter of the spiral blade (60) is 4-6 cm wider than the outer diameter of the riser pipe.

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