Connecting joint between spiral anchor and spiral anchor drilling machine and construction method of connecting joint

Abstract

The invention discloses a connecting joint between a spiral anchor and a spiral anchor drilling machine and a construction method of the connecting joint. Two circular arc welding plates and two square welding plates are arranged on a bottom plate of a joint head; the two circular arc welding plates are symmetrically arranged, the two square welding plates are symmetrically arranged, the circular arc welding plates and the square welding plates are sequentially arranged in a surrounding mode, and rotating shafts are arranged on the oppositely-arranged circular arc welding plates; the glenoid fossa comprises a second steel welding plate, a third steel welding plate and two first steel welding plates, the second steel welding plate and the third steel welding plate are oppositely arranged, and the two first steel welding plates are oppositely arranged; in order to enable the spiral anchor to rotate by 90 degrees, the lower end of the third steel welding plate is shorter than the first steel welding plate and the second steel welding plate; u-shaped welding plates are welded to the inner sides of the two first steel welding plates, and U-shaped grooves are formed in the U-shaped welding plates. The two ends of the rotating shaft extend out of the circular arc welding plate and are arranged in a U-shaped groove of the U-shaped welding plate. The construction efficiency can be improved, manpower resource consumption is reduced, mechanical and large-scale construction is facilitated, and the method is safe, reliable and wide in application range.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transmission and transformation engineering, and particularly relates to a connection joint between a screw anchor and a screw anchor drilling rig. This connection joint can improve construction efficiency, reduce human resource consumption, facilitate mechanized and large-scale construction, is safe and reliable, has a wide application range, and can be used on all current domestic screw anchor construction machinery. Background Art

[0002] A screw anchor foundation is an anchoring structure mainly composed of components such as a screw anchor and an upper bearing platform, which mainly utilizes deep soil to resist the acting force of the upper structure. This foundation is mainly made of steel components and is prefabricated in a factory, with stable foundation quality. The foundation is constructed by machinery, with fewer construction procedures and simple construction, and can significantly reduce or avoid the use of concrete materials, thus greatly shortening the construction period.

[0003] At the present stage, the commonly used screw anchor construction machinery usually connects the power head and the screw anchor through a flange or bolts to transmit torque. The power of the power head is provided by construction machinery (which can be modified from an excavator, a rotary drilling rig, etc.). The internal gear set of the power head converts oil pressure into torque and outputs it to the connection part between the bottom end of the power head and the screw anchor.

[0004] However, due to the fact that the mast in the existing screw anchor construction machinery cannot be laid flat, the screw anchor can only be installed vertically during installation, and there are great difficulties during installation. When installing the existing screw anchor, it is necessary to first use a crane to erect the screw anchor and hoist it to the designed position, and then workers carry out aerial operations to connect the screw anchor and the power head of the construction machinery before construction can be carried out. However, the screw anchor body is very heavy, and the hoisting process is very unsafe. The hoisting process has high requirements for the crane driver, and it is also difficult to improve the construction efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to solve the problems such as difficult installation and high requirements for hoisting during the construction of existing screw anchors. Therefore, a connection joint between a screw anchor and a screw anchor drilling rig is provided to realize that the entire installation process is on the ground without aerial operations, improving construction efficiency and construction safety factor.

[0006] To solve the above problems, the present invention is realized through the following technical solutions: A connection joint between a screw anchor and a screw anchor drilling rig includes two parts: a joint head and a joint socket; The joint head includes a bottom plate, on which two arc welding plates and two square welding plates are provided; among them, the two arc welding plates are symmetrically arranged, the two square welding plates are symmetrically arranged, the arc welding plates and the square welding plates are sequentially enclosed, and a rotating shaft is provided on the relatively arranged arc welding plates; The glenoid fossa includes a second steel welding plate, a third steel welding plate and two first steel welding plates. Among them, the second steel welding plate and the third steel welding plate are arranged oppositely, and the two first steel welding plates are arranged oppositely; the lower end of the third steel welding plate should be shorter than the first steel welding plate and the second steel welding plate; and U-shaped welding plates are welded on the inner sides of the two first steel welding plates, and U-shaped grooves are arranged inside the U-shaped welding plates. Both ends of the rotating shaft extend out of the arc welding plate and are placed in the U-shaped groove of the U-shaped welding plate.

[0007] The rotating shaft is composed of a hollow runner, a nut and a pin shaft. Among them, a nut is welded at the center of the hollow runner, and a pin shaft is arranged at the center of the hollow runner.

[0008] Square welding plate stiffening ribs are respectively arranged on the outer sides of the two square welding plates.

[0009] Steel welding plate stiffening ribs are arranged on the outer sides of the second steel welding plate, the third steel welding plate and the two first steel welding plates.

[0010] It also includes motors. There are 2 motors in total, which are respectively welded on the second steel welding plate and the third steel welding plate; the motors have controllable steel shafts, and the steel shafts are controlled by the motors. When the drill presses down, the steel shafts contract; when the drill is lifted, the steel shafts of the motors extend into the reserved holes on the screw anchor.

[0011] The middle bottom plate of the joint head is connected to the screw anchor sleeve and the torque sensor; a top plate is arranged at the top of the glenoid fossa, and the top plate is connected to the power head through a sleeve.

[0012] A construction usage method of the above connection joint includes the following steps: S1: Insert the joint head into the U-shaped groove of the U-shaped welding plate, slide the joint head along the U-shaped groove to the bottom of the groove, and connect the connection joint to the power head of the construction machinery. S2: Rotate the joint head 90° around the rotating shaft, and connect the screw anchor to the bottom plate of the joint head. S3: Use the screw anchor construction machinery to slowly and evenly pull the screw anchor from the ground. When the position of the reserved hole on the screw anchor coincides with the position of the steel shaft on the motor, control the motor to extend the steel shaft and lock the positions of the screw anchor and the joint head to prevent the joint head from coming out. S4: Lift the screw anchor to the construction position. After centering, control the motor to retract the steel shaft, screw the screw anchor to the design elevation, and remove the connection joint from the screw anchor to complete the construction of the screw anchor.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The screw anchor connected by the connecting joint can slide up and down and can rotate 90°. In actual construction, the connecting joint can be connected to the screw anchor sleeve when the screw anchor is placed horizontally; as the construction machinery is lifted upward, the screw anchor connected by the connecting joint can rotate 90° and turn to the vertical position. The present invention can improve construction efficiency, reduce human resource consumption, facilitate mechanized and large-scale construction, is safe and reliable, has a wide application range, and can be used on all current domestic screw anchor construction machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the joint head A and the joint socket B of the present invention arranged vertically; Figure 2 It is a structural diagram of the joint head A and the joint socket B of the present invention connected coaxially; Figure 3 It is a schematic diagram of the working state of the connecting joint of the present invention; Figure 4 It is Figure 3 Schematic diagram of the 1-1 cross-section of; Figure 5 It is a structural diagram of the joint head A of the present invention; Figure 6 It is Figure 5 Schematic diagram of the 2-2 cross-section of; Figure 7 It is a structural diagram of the rotating shaft of the present invention; Figure 8 It is a schematic diagram of the screw anchor construction machinery provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0017] Such as Figure 1 — Figure 3As shown in the figure, a connecting joint between a screw anchor and a screw anchor drilling rig includes two parts: a joint head A and a joint socket B.

[0018] As Figure 5 , Figure 6 shown in the figure, the joint head A includes a bottom plate 1, on which two arc welding plates 2 and two square welding plates 3 are provided; among them, the two arc welding plates 2 are symmetrically arranged, the two square welding plates 3 are symmetrically arranged, the arc welding plates 2 and the square welding plates 3 are surrounded in sequence, and a rotating shaft 5 is provided on the relatively arranged arc welding plates 2.

[0019] As Figure 7 shown in the figure, the rotating shaft 5 is composed of a hollow runner 5a, a nut 5b and a pin shaft 5c. Among them, the nut 5b is welded at the center of the hollow runner 5a, and the pin shaft 5c is provided at the center of the hollow runner 5a. It should be noted that the size of the nut 5b is slightly larger than that of the pin shaft 5c.

[0020] Furthermore, square welding plate stiffening ribs 4 are respectively provided on the outer sides of the two square welding plates 3.

[0021] As Figure 4 shown in the figure, the joint socket B includes a second steel welding plate 9c, a third steel welding plate 9b and two first steel welding plates 9a. Among them, the second steel welding plate 9c and the third steel welding plate 9b are relatively arranged, and the two first steel welding plates 9a are relatively arranged; in order to enable the screw anchor to rotate 90°, the lower end of the third steel welding plate 9b should be shorter than the first steel welding plate 9a and the second steel welding plate 9c by a certain distance. And U-shaped welding plates 7 are welded on the inner sides of the two first steel welding plates 9a, and U-shaped grooves are provided in the U-shaped welding plates 7.

[0022] Furthermore, steel welding plate stiffening ribs 8 are provided on the outer sides of the second steel welding plate 9c, the third steel welding plate 9b and the two first steel welding plates 9a.

[0023] In the present invention, the rotation and sliding of the screw anchor are mainly realized through the U-shaped welding plates 7 in the joint head A and the joint socket B. There are two U-shaped welding plates 7, which are respectively welded on two opposite first steel welding plates 9a without openings. The joint head A has a rotating shaft 5, and the pin shaft 5c at both ends of the rotating shaft 5 extends out of the arc welding plates 2 and is placed in the U-shaped groove of the U-shaped welding plate 7. In this way, the pin shaft 5c can slide up and down along the U-shaped groove in the U-shaped welding plate 7. When the pin shaft 5c in the joint head A slides to the bottom of the U-shaped groove, the pin shaft 5c can drive the joint head A to rotate 90°, that is, the screw anchor can rotate 90° around the pin shaft 5c, and the horizontal installation of the screw anchor on the ground can be realized. After the installation is completed, the construction machinery is lifted to drive the screw anchor to stand upright slowly.

[0024] Better yet, in actual engineering applications, when the screw anchor is pressed down, the upper steel welding plate of the socket B and the joint head A bear the force together. At this time, the joint head A is not easily disengaged and no other treatment is required. When the screw anchor is pulled up, all the self-weight is borne by the joint head A. At this time, the joint head A is extremely easy to slip off, posing a certain safety hazard. When encountering this problem in actual engineering, the method of manual monitoring is often adopted, that is, when it is found that it has come off, the screw anchor is immediately lowered and reassembled. The present invention adds a motor 10, as Figure 4 shown. There are a total of 2 motors 10, which are respectively welded to the second steel welding plate 9c and the third steel welding plate 9b. The motor 10 has a controllable steel shaft, which is controlled by the motor 10. When the drill is pressed down, the controllable steel shaft can contract. When the drill is lifted, in order to prevent the joint head A from coming off, the steel shaft of the motor 10 extends into the reserved hole on the screw anchor to lock the screw anchor and assist in bearing the force. Therefore, as an improvement of the technical solution, the motor 10 etc. are only provided to lock the screw anchor, assist in bearing the force, and prevent the joint head A from coming off, and can also be replaced with similar structures such as spring buckles and hinges.

[0025] Furthermore, the bottom plate 1 in the joint head A is connected to the screw anchor sleeve 11 and the torque sensor; a top plate 12 is provided at the top of the socket B, and the top plate 12 is connected to the power head 14 through a sleeve 13.

[0026] The principle of the present invention is: The mast in the existing screw anchor construction machinery cannot be laid flat, and the screw anchor can only be installed vertically during installation, which causes great difficulties during installation. When installing the existing screw anchor, it is necessary to first use a crane to erect the screw anchor and hoist it to the designed position, and then workers perform aerial operations to connect the screw anchor to the power head of the construction machinery. After adopting the present invention, the connecting joint described in the present invention can be connected to the screw anchor sleeve when the screw anchor is horizontally placed; as the construction machinery is lifted upward, the screw anchor connected by the connecting joint can rotate 90° and turn to the vertical position.

[0027] Furthermore, the construction usage method of the connecting joint includes the following steps: S1: Insert the joint head A into the U-shaped groove of the U-shaped welding plate 7, slide the joint head A along the U-shaped groove to the bottom of the groove, and connect the connecting joint to the upper power head 14 of the construction machinery; S2: Rotate the joint head A 90° around the pin shaft 5c, and use connectors, bolts, etc. to connect the screw anchor to the bottom plate 1 of the joint head A; S3: Use the screw anchor construction machinery to slowly and evenly lift the screw anchor from the ground. When the position of the reserved hole on the screw anchor coincides with the position of the steel shaft on the motor 10, control the motor 10 to extend the steel shaft to lock the positions of the screw anchor and the joint head A and prevent the joint head A from coming off; S4: Lift the screw anchor to the construction position. After centering, control the motor to retract the steel shaft, screw the screw anchor to the designed elevation, and remove the connecting joint from the screw anchor to complete the construction of the screw anchor.

[0028] As an improvement of the technical solution, the motor 10 described in the present invention is only used to clamp the spiral anchor, assist in force, and prevent the joint head A from falling out. It can also be replaced by similar spring buckles, hinges and other structures.

[0029] It should be noted that the present invention can adopt a new type of spiral anchor construction machinery modified from a rotary drilling rig, such as Figure 8 As shown, it includes a rotary drilling rig 101, and a drilling rig pole 104 is arranged on one side of the rotary drilling rig 101; wherein a pulley block 105 is arranged on the top of the drilling rig pole 104; The rotary drilling rig 101 is provided with a frame 102, a winch 103 is provided on the frame 102, a steel strand 106 is wound around the winch 103, the steel strand 106 coming out of the winch 103 passes through a pulley block 105 and is connected to a power head 14, and a spiral anchor 108 is provided below the power head 14.

[0030] During the drilling process of the spiral anchor 108 , in order to better screw the spiral anchor 108 into the soil, the machine should be able to apply a certain pressure to the spiral anchor 108 .

[0031] The pressurization type adopted by the present invention is jack-type pressurization, that is, a jack 112 is arranged on the top of the power head 14, the cylinder part of the jack 112 is fixed on the side of the drilling rig upright 104, and the oil pipe of the jack 112 is against the top of the power head 14. In this way, power is applied to the power head through the jack 112, thereby applying pressure to the spiral anchor 108. This type of pressurization has the greatest pressure, so the application range is also relatively wide, but the modification has requirements for the drilling rig model, and the amount of pressure applied depends on the tonnage of the jack 112. The jack 112 can be provided by the rotary drilling rig 101, or it can be newly installed. Since the position of the power head 14 after modification is lower than the original drilling rig power head, the jack 112 after modification needs to ensure that the range is sufficient, and the jack oil pipe should also be extended or replaced accordingly.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the scope of protection of the present invention.

Claims

1. A connection joint between a spiral anchor and a spiral anchor drilling rig, characterized in that: It consists of two parts: the articular head (A) and the articular socket (B); The joint head (A) comprises a base plate (1), on which two circular arc welding plates (2) and two square welding plates (3) are arranged; wherein the two circular arc welding plates (2) are symmetrically arranged, and the two square welding plates (3) are symmetrically arranged, the circular arc welding plates (2) and the square welding plates (3) are sequentially surrounded, and a rotating shaft (5) is arranged on the circular arc welding plates (2) arranged opposite to each other; The joint socket (B) comprises a second steel welding plate (9c), a third steel welding plate (9b) and two first steel welding plates (9a), wherein the second steel welding plate (9c) and the third steel welding plate (9b) are arranged opposite to each other, and the two first steel welding plates (9a) are arranged opposite to each other; the lower end of the third steel welding plate (9b) should be shorter than the first steel welding plate (9a) and the second steel welding plate (9c); and U-shaped welding plates (7) are welded to the inner sides of the two first steel welding plates (9a), and a U-shaped groove is arranged in the U-shaped welding plate (7); Both ends of the rotating shaft (5) extend out of the circular arc welding plate (2) and are placed in the U-shaped groove of the U-shaped welding plate (7).

2. The connection joint between a spiral anchor and a spiral anchor drilling rig according to claim 1, characterized in that: The rotating shaft (5) is composed of a hollow rotating wheel (5a), a nut (5b) and a pin (5c), wherein a nut (5b) is welded at the center of the hollow rotating wheel (5a), and a pin (5c) is arranged at the center of the hollow rotating wheel (5a).

3. The connection joint between a spiral anchor and a spiral anchor drilling rig according to claim 1, characterized in that: Square welding plate stiffening ribs (4) are respectively arranged on the outer sides of the two square welding plates (3).

4. The connection joint between a spiral anchor and a spiral anchor drilling rig according to claim 1, characterized in that: Steel welding plate stiffening ribs (8) are arranged on the outer sides of the second steel welding plate (9c), the third steel welding plate (9b) and the two first steel welding plates (9a).

5. The connection joint between a spiral anchor and a spiral anchor drilling rig according to claim 1, characterized in that: It also includes a motor (10), wherein two motors (10) are welded to the second steel welding plate (9c) and the third steel welding plate (9b) respectively; the motor (10) has a controllable steel shaft, which is controlled by the motor (10); when the drilling rig is pressed down, the steel shaft contracts; when the drilling rig is lifted up, the steel shaft of the motor (10) extends to the reserved hole on the spiral anchor.

6. The connection joint between a spiral anchor and a spiral anchor drilling rig according to claim 1, characterized in that: The bottom plate (1) of the joint head (A) is connected to a spiral anchor sleeve (11) and a torque sensor; a top plate (12) is provided on the top of the joint socket (B), and the top plate (12) is connected to a power head (14) via a sleeve (13).

7. A method for constructing and using the connecting joint according to any one of claim 6, characterized in that: The steps include: S1: inserting the joint head (A) into the U-shaped groove of the U-shaped welding plate (7), sliding the joint head (A) along the U-shaped groove to the bottom of the groove, and connecting the connecting joint to the power head (14) of the construction machine; S2: Rotate the joint head (A) 90° around the rotation axis (5), and connect the screw anchor to the base plate (1) of the joint head (A); S3: Use a screw anchor construction machine to pull the screw anchor up from the ground at a uniform and slow speed, and when the position of the reserved hole on the screw anchor coincides with the position of the steel shaft on the motor (10), control the motor (10) to extend the steel shaft, lock the position of the screw anchor and the joint head (A), and prevent the joint head (A) from falling out; S4: lift the spiral anchor to the construction position, and after centering, control the motor to retract the steel shaft, screw the spiral anchor to the designed elevation, remove the connecting joint from the spiral anchor, and complete the spiral anchor construction.

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