Spiral anchor drilling machine and spiral anchor connector thereof

Abstract

The invention relates to a spiral anchor drilling machine and a spiral anchor connector thereof, the upper end of the spiral anchor connector is provided with a connector connecting structure connected with a torque output end, and the spiral anchor connector and a power head are provided with polished rod section penetrating holes for a polished rod section of a spiral anchor to penetrate in the vertical direction; the bottom of the spiral anchor connector is a force transmission head pressing the corresponding spiral anchor disc downwards, and the lower end face of the force transmission head is a connector spiral face used for being matched with the upper side spiral face of the spiral anchor disc of the spiral anchor in a matched and contact mode. The circumferential end face of the force transmission head is used for being matched with the circumferential end face of the upper end of the spiral anchor disc in an abutting mode so as to drive the spiral anchor to be screwed forward through the spiral anchor connector. The technical problem that in the prior art, a power head is far away from a spiral anchor disc, so that a polished rod section is prone to bending deformation when being twisted is solved.

Description

Technical Field

[0001] This invention relates to the field of power construction, and in particular to a spiral anchor drilling machine and its spiral anchor connector. Background Technology

[0002] During the construction of high-voltage transmission lines, it is inevitable that they will pass through areas with relatively soft geology, such as silt and sand. Spiral anchors are widely used in these areas as the foundation support for the towers.

[0003] Existing technologies for spiral anchor construction include Figures 1-2 As shown: During use, a spiral anchor is screwed into the foundation using a spiral anchor drilling rig. The spiral anchor drilling rig includes a drilling column 1, on which a power head 2 is mounted for vertical movement. The power head 2 is driven by a lifting drive mechanism and can move up and down along the column. The power head has a torque output end, which is usually driven by a gear ring. The power head includes at least two drive motors arranged circumferentially, and the motor shaft of the drive motor is equipped with a motor shaft gear that meshes with the gear ring. The spiral anchor 4 includes an anchor rod 5, on which multiple spiral anchor discs 6 are arranged at intervals. The number of spiral anchor discs 6 is usually 3 to 5. The spiral anchor disc is composed of a 360-degree spiral blade plate. The upper and lower axial surfaces of the spiral blade plate are spiral surfaces. The upper circumferential end face 7 and the lower circumferential end face 8 of the spiral blade plate are staggered.

[0004] The anchor bolt includes a smooth rod section 3 located on the uppermost spiral anchor plate. The length of the smooth rod section 3 accounts for about one-third of the total length of the anchor bolt. In use, the upper end of the smooth rod section is connected to the anti-rotation power head. The power head rotates the anchor bolt, and an axial force is generated between the spiral anchor plate and the foundation during the rotation, thereby causing the anchor bolt and the power head to move downward as a whole. When the spiral anchor is drilled to the specified depth, the connection between the anchor bolt and the power head is removed, and the bottom of the tower or other support is fixed to the upper end of the anchor bolt. The force between the spiral anchor plate and the foundation is used to ensure the foundation bearing capacity of the spiral anchor.

[0005] The existing spiral anchor construction has the following problems: when the power head drives the upper end of the anchor rod to rotate to drive the spiral anchor to rotate, the length of the smooth rod section is relatively long, which causes the smooth rod section to be easily bent and deformed, not only affecting the construction quality of the spiral anchor, but also causing a reverse force on the power head, which also aggravates the damage of the power head; in the process of drilling the spiral anchor in the foundation, in the ideal state, that is, the spiral anchor disc does not slip with the soil layer, the spiral anchor advances axially by one pitch of the spiral anchor disc when it rotates one round, so as to reduce the disturbance to the soil layer in the process of rotating in, but in the prior art, the power head moves downward with the downward movement of the spiral anchor when working, the power head cannot provide sufficient downward pressure to the spiral anchor, which causes the spiral anchor disc to slip with the soil layer in the process of rotating in, which is not conducive to the guarantee of the bearing capacity of the spiral anchor foundation after drilling. SUMMARY

[0006] The technical problems to be solved by the present application are to provide a spiral anchor drilling machine to solve the technical problem that the power head is far away from the spiral anchor disc, causing the smooth rod section to be easily bent and deformed when being twisted, and to provide a spiral anchor connector used in the spiral anchor drilling machine.

[0007] To solve the above technical problems, the technical scheme of a spiral anchor drilling machine in the present application is as follows:

[0008] A spiral anchor drilling machine, comprising a drilling machine stand column, a power head movably mounted on the drilling machine stand column, the power head being driven by a power head lifting mechanism, the power head having a torque output end, the spiral anchor drilling machine further comprising a spiral anchor connector for realizing the transmission connection between the torque output end and the spiral anchor, the upper end of the spiral anchor connector having a connector connecting structure connected with the torque output end, the spiral anchor connector and the power head having a smooth rod section hole through which the smooth rod section of the spiral anchor passes in the up-down direction, the bottom of the spiral anchor connector being a force head for pressing the corresponding spiral anchor disc, the lower end surface of the force head being a connector spiral surface for adaptively contacting and cooperating with the upper spiral surface of the spiral anchor disc, and the circumferential end surface of the force head being used for abutting and cooperating with the upper end circumferential end surface of the spiral anchor disc to positively rotate in through the spiral anchor connector.

[0009] Further, the spiral anchor connector is composed of two connector petals arranged in sequence in the circumferential direction, and the two connector petals are detachably connected through transverse bolts.

[0010] Further, the upper end of the spiral anchor connector is provided with a connector flange, and the connector flange is detachably connected with the torque output end through vertical bolts.

[0011] Further, a torque sensor and a pressure sensor are arranged on the force transmission path of the power head and the spiral anchor.

[0012] Further, the circumferential end surface of the transmission head is provided with a reverse protrusion for abutting and cooperating with the lower end circumferential end surface of the spiral anchor disc to rotate the spiral anchor disc reversely when the spiral anchor connector reversely rotates.

[0013] The technical scheme of the spiral anchor connector in the application is as follows:

[0014] The spiral anchor connector of the spiral anchor drilling machine, the upper end of the spiral anchor connector is provided with a connector connecting structure for connecting with the torque output end of the power head, the spiral anchor connector is provided with a rod section through hole for the rod section of the spiral anchor to pass through in the up-down direction, the bottom of the spiral anchor connector is a transmission head for pressing the spiral anchor disc, the lower end surface of the transmission head is a connector spiral surface for abutting and cooperating with the upper side spiral surface of the spiral anchor disc of the spiral anchor disc, and the circumferential end surface of the transmission head is used for abutting and cooperating with the upper end circumferential end surface of the spiral anchor disc to rotate the spiral anchor disc forwardly through the spiral anchor connector.

[0015] Further, the spiral anchor connector is composed of two connector petals arranged in sequence in the circumferential direction, and the two connector petals are detachably connected through horizontal bolts.

[0016] Further, the upper end of the spiral anchor connector is provided with a connector flange, and the connector flange is detachably connected with the torque output end through vertical bolts.

[0017] Further, the transmission head is further provided with a rod connecting structure for detachably connecting with the upper end of the rod section of the spiral anchor.

[0018] Further, the circumferential end surface of the transmission head is provided with a reverse protrusion for abutting and cooperating with the lower end circumferential end surface of the spiral anchor disc to rotate the spiral anchor disc reversely when the spiral anchor connector reversely rotates.

[0019] The beneficial effects of the application are as follows: in the application, the rod section of the anchor rod is passed out from the rod section through hole of the spiral anchor connector and the power head from bottom to top, the connector spiral surface of the lower end of the transmission head is abutted and cooperated with the upper end surface of the spiral anchor disc closest to the position, the circumferential end surface of the transmission head is abutted and cooperated with the upper end circumferential end surface of the spiral anchor disc, the power head outputs torque and presses the spiral anchor disc under the driving of the power head lifting mechanism, the pressing force of the power head is transmitted to the spiral anchor disc through the connector spiral surface, the output torque of the power head is transmitted to the spiral anchor disc through the circumferential end surface of the transmission head, so that the spiral anchor is rotated, and in the application, the torsion position of the spiral anchor is closer to the lower end of the spiral anchor, so that the technical problem that the rod section is easily deformed by torsion in the prior art can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the present disclosure exemplary embodiments will become more apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present disclosure are illustrated by way of example and not limitation in which like reference numerals represent similar, or corresponding parts wherein:

[0021] Figure 1 is a structural schematic diagram of a spiral anchor drilling machine in the prior art of the present application;

[0022] Figure 2 is an enlarged view of A in Figure 1 ;

[0023] Figure 3 is a use state diagram of one embodiment of the present application;

[0024] Figure 4 is an enlarged view of B in Figure 3 ;

[0025] Figure 5 is an enlarged view of B in Figure 4 ;

[0026] Figure 6 is a cooperation schematic diagram of the power head and the spiral anchor connector in Figure 4 ;

[0027] Figure 7 is a structural schematic diagram of the spiral anchor connector in Figure 6 ;

[0028] Figure 8 is a side view of Figure 7 ;

[0029] Figure 9 is a top view of Figure 7 ;

[0030] Figure 10 is a transmission schematic diagram of the power head, the spiral anchor connector and the upper end of the polished rod section in the present application;

[0031] Figure 11 is a cooperation schematic diagram of the spiral anchor connector and the upper end of the polished rod section in Figure 10 ;

[0032] 1, drill stand; 2, power head; 3, polished rod section; 4, screw anchor; 5, anchor rod; 6, screw anchor disc; 7, upper end circumferential end face of screw anchor disc; 8, lower end circumferential end face of screw anchor disc; 9, anchor rod connecting hole; 10, screw anchor connecting head; 11, pressure sensor; 12, torque sensor; 13, gear ring; 14, driving motor; 15, vertical bolt; 16, torque output flange; 17, connecting head flange; 18, power transmission head; 19, transverse bolt; 20, reverse protrusion; 21, circumferential end face of power transmission head; 22, lower end face of power transmission head; 23, connecting head petal; 24, power transmission head connecting hole; 25, polished rod section perforation; 26, transmission pin shaft. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0034] It should be noted that, unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0035] An embodiment of a screw anchor drilling rig in the present application is shown in Figures 3-11 The drilling rig stand 1 is shown, and the power head 2 is movably assembled on the drilling rig stand 1 in a guided manner. The power head 2 is driven by a power head lifting mechanism, and the power head 2 has a torque output end. The torque output end includes a gear ring 13 with a rotation axis that is consistent with the lifting direction of the power head. The power head includes three driving motors 14 that are arranged at intervals in the circumferential direction. The motor shaft of the driving motor 14 is provided with a motor shaft gear that meshes with the gear ring for transmission. The above all belong to the prior art and will not be described in detail here.

[0036] The torque output end further includes a torque output flange 16 that is fixed coaxially to the lower end of the gear ring. The torque output flange 16 is provided with bolt perforations.

[0037] The screw anchor drill machine further comprises a screw anchor connector 10 for achieving the transmission connection between the torque output end and the screw anchor. The screw anchor 4 is a prior art, and the screw anchor comprises a screw anchor rod 5, a plurality of screw anchor discs 6 are arranged on the screw anchor rod 5 in intervals, the screw anchor disc is composed of a screw blade plate, the upper and lower axial plate faces of the screw blade plate are helical surfaces, and the upper end circumferential end face 7 of the screw blade plate and the lower end circumferential end face 8 of the screw blade plate are arranged in a staggered manner. The screw anchor rod comprises a polished rod section 3 located at the upper end of the uppermost screw anchor disc, and the upper end of the polished rod section 3 is provided with a screw anchor rod connecting hole 9 for torque input. In the embodiment, there are three screw anchor rod connecting holes, and the three screw anchor rod connecting holes are arranged in parallel in the up-down direction and penetrate the upper end of the polished rod section in the radial direction.

[0038] The upper end of the screw anchor connector has a connector connecting structure connected with the torque output end. In the embodiment, the connector connecting structure is a connector flange 17, and the connector flange 17 is detachably connected with the torque output end flange 16 through vertical bolts 15.

[0039] The screw anchor connector 10 and the power head have a polished rod section through hole 25 for the polished rod section of the screw anchor to pass through in the up-down direction. The bottom of the screw anchor connector is a force transmission head 18 for pressing the corresponding screw anchor disc, and the lower end face 22 of the force transmission head is a connector helical surface for adaptively contacting and cooperating with the upper helical surface of the screw anchor disc of the screw anchor. The circumferential end face 21 of the force transmission head is used for abutting and cooperating with the upper end circumferential end face 7 of the screw anchor disc to make the screw anchor rotate forward through the screw anchor connector.

[0040] In the embodiment, the screw anchor connector is composed of two connector petals 23 arranged in sequence in the circumferential direction. The circumferential span of each connector petal 23 is 180 degrees, and the two connector petals 23 are detachably connected through horizontal bolts 19. That is, one half of the connector flange is arranged on one of the connector petals, and the other half of the connector flange is arranged on the other connector petal; one half of the connector helical surface is composed of the lower end face of one of the connector petals, and the other half of the connector helical surface is composed of the lower end face of the other connector petal.

[0041] The torque sensor 12 and the pressure sensor 11 are arranged on the force transmission path between the power head and the screw anchor. Specifically, the pressure sensor 11 is arranged between the torque output end flange 16 and the connector flange 17, and the torque sensor 12 is connected in series between the ring gear 13 and the torque output end flange 16. The torque sensor 12 is used for detecting the output torque of the power head 2 to the screw anchor 4, and the pressure sensor 11 is used for detecting the pressing force of the power head 2 to the screw anchor 4.

[0042] A reversing protrusion 20 is provided at the lower end of the circumferential end face of the power transmission head. The reversing protrusion 20 is used to abut against the lower circumferential end face of the spiral anchor disc so that the spiral anchor disc rotates in the reverse direction when the spiral anchor connector rotates in the reverse direction. In this invention, forward rotation and reverse rotation are relative. Forward rotation of the power head can enable the spiral anchor to drill into the formation. When the spiral anchor is not drilling smoothly, it is occasionally necessary to reverse the power head to lift the spiral anchor and then rotate forward again. The reversing protrusion 20 is not used frequently and is not necessary. Therefore, in other embodiments of this invention, the reversing protrusion may be omitted.

[0043] The force transmission head is provided with radially penetrating force transmission head connection holes 24, which are used to cooperate with the corresponding anchor bolt connection holes 9.

[0044] When using it, firstly as Figure 3 As shown, the smooth section 3 of the anchor bolt passes through the smooth section of the power head from bottom to top. The power head descends to the uppermost auger disc, and then the auger connector is connected to the output flange, so that the lower end face of the force transmission head is in contact with the upper end face of the uppermost auger disc, and the circumferential end face of the force transmission head is in contact with the upper circumferential end face of the uppermost auger disc. The reverse protrusion is in contact with the lower circumferential end face of the uppermost auger disc. The power head rotates the auger forward through the auger connector, and at the same time, the power head actively descends to apply pressure to the upper end of the auger, thus enabling the auger to drill into the soil.

[0045] When the uppermost spiral anchor disc contacts the ground, the two connecting head flaps need to be loosened, and the reversing protrusion is moved to the upper side of the lower circumferential end face of the spiral anchor disc. Then, the power head carries the entire spiral anchor connector head upward until the force transmission head connection hole on the force transmission head corresponds to the anchor rod connection hole on the smooth section of the anchor rod. Then, the transmission pin 26 is inserted into the force transmission head connection hole 24 and the anchor rod connection hole 9 to realize the connection between the spiral anchor connector head and the anchor rod. The power head drives the entire spiral through the spiral anchor connector head.

[0046] The torque sensor detects the torque on the helical anchor in real time, and the pressure sensor detects the pressure on the helical anchor in real time. In order to avoid the helical anchor disc from slipping on the soil, the helical anchor disc causes minimal disturbance to the soil, so that when the helical anchor rotates one revolution, the helical anchor advances axially by the pitch of one helical anchor disc. This process is also called ideal advance.

[0047] It needs to be guaranteed that: F / T = (1 + μ * tgɑ0) / (μ - tgɑ0) / R0

[0048] In the formula, F represents the downward pressure exerted by the power head on the helical anchor, which is measured by a pressure sensor;

[0049] T represents the output torque of the power head to the helical anchor, which is measured by a torque sensor;

[0050] μ represents the friction coefficient of the upper and lower axial plate surfaces of the helical anchor disc;

[0051] ɑ0 represents the helix angle of the helical anchor disc force helix of the soil layer;

[0052] R0 represents the helix radius of the helical anchor disc force helix of the soil layer.

[0053] In the formula,

[0054]

[0055] wherein r represents the anchor rod radius, and R represents the radius of the helical blade disc.

[0056] ɑ0 is obtained by the following formula:

[0057] tgɑ0 = (2*Pi*R0) / H

[0058] In the formula, Pi represents the circular constant, and H represents the pitch of the helical anchor disc.

[0059] The downward pressure of the anchor rod changes with the drilling torque, and the anchor rod is rotated and drilled into the helical anchor without causing large disturbance to the soil above the helical anchor disc, i.e. the soil layer. The downward pressure F of the anchor rod increases with the increase of the drilling torque F of the anchor rod, and the relationship is as shown in the above figure F / T, otherwise the phenomenon of slipping will occur, i.e. the condition of "only rotation without drilling".

[0060] The derivation of F / T is as follows:

[0061] The helical blade with a blade edge is subjected to a normal pressure in contact with the soil, which is called the soil force F0. The helical blade has a corresponding helix angle ɑ at different radial positions, tgɑ = (2*Pi*R) / H, and the helix angle of the helical blade at the anchor rod is the smallest, and the helix angle of the helical blade at the maximum diameter is the largest. Assuming that the force of the soil acting vertically on the helical blade is uniform, the soil force F0 acts on a helix line with a helix radius R0 on the helical blade, which is defined as the soil force helix line, and the corresponding helix angle of the force helix line is called the force helix angle ɑ0. The soil force F0 acts vertically on the soil force helix line, and generates a friction force f0 = F0*μ on the helical blade.

[0062] That is, during the drilling process of the helical anchor rod, the soil force F0 acts vertically on the soil force helix line with a radius R0 on the helical blade, and the friction force f0 generated by the soil force F0 and the helical blade.

[0063] The anchor rod radius r, the maximum radius R of the helical blade, and the pitch H of the helical blade.

[0064] From the anchor radius r to the maximum radius R of the helical blade, the helix angle of the helical blade changes continuously, and the radius R0 of the helical line of the soil resultant force acting on the helical blade is equal to the area of ​​the helical line formed by the circle with anchor radius r and the circle with radius R0 of the soil resultant force helical line. That is:

[0065]

[0066] When the helical anchor is subjected to a thrust F = F z Propulsion torque T = F x When R0 is reached, the helical anchor bolt operates under the assumed ideal spiraling state in uniform soil.

[0067] Summarizing the above assumptions, we get:

[0068] The vertical component of the resultant force on the soil is: F1 = F0 * cosα0.

[0069] The horizontal component of the resultant force of the soil mass is: F2 = F0 * sinɑ0;

[0070] The perpendicular component of the frictional force is: f1 = F0 * μ * sinα0.

[0071] The horizontal component of the frictional force is: f2 = F0 * μ * cosα0;

[0072] F = F z =F1+f1=F0*cosɑ0+F0*μ*sinɑ0

[0073] T = F x *R0=(f2-F2)*R0=(F0*μ*cosɑ0-F0*sinɑ0)*R0

[0074] In summary:

[0075] f0=F0*μ..................................................Formula 1

[0076]

[0077] tgɑ0=H / (2*Pi*R0)..........................................Formula 3

[0078] F=F0*cosɑ0+F0*μ*sinɑ0...........................Formula 4

[0079] T=(F0*μ*cosɑ0-F0*sinɑ0)*R0................................Formula 5

[0080] Formula 4 / Formula 5:

[0081] F / T=(F0*cosɑ0+F0*μ*sinɑ0) / (F0*μ*cosɑ0-F0*sinɑ0) / R0

[0082] = (1+μ*tgɑ0) / (μ-tgɑ0) / R0

[0083] Therefore, F / T = (1 + μ * tgɑ0) / (μ - tgɑ0) / R0....................Formula Six

[0084] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0085] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the devices or elements involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0086] In addition, the terms "first" or "second" and the like used in the present specification are used for terms indicating numbers or ordinal numbers only for the purpose of description, and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A screw anchor drill rig comprising a drill mast, a power head being movably mounted on the drill mast, the power head being driven by a power head lifting mechanism, the power head having a torque output, characterised in that: The screw anchor drilling machine further comprises a screw anchor connector for achieving the transmission connection between the torque output end and the screw anchor, the upper end of the screw anchor connector is provided with a connector connecting structure connected with the torque output end, the screw anchor connector and the power head are provided with a light rod section through hole for the light rod section of the screw anchor to pass through in the up-down direction, the bottom of the screw anchor connector is a force transmission head for pressing the corresponding screw anchor disc, the lower end surface of the force transmission head is a connector spiral surface for adaptively contacting and matching with the upper side spiral surface of the screw anchor disc, and the circumferential end surface of the force transmission head is used for abutting and matching with the upper end circumferential end surface of the screw anchor disc to positively rotate the screw anchor through the screw anchor connector.

2. A screw anchor drill rig according to claim 1, characterised in that: The screw anchor connector is composed of two connector petals arranged in sequence in the circumferential direction, and the two connector petals are detachably connected through transverse bolts.

3. A screw anchor drill rig according to claim 1, characterised in that: The upper end of the screw anchor connector is provided with a connector flange, and the connector flange is detachably connected with the torque output end through vertical bolts.

4. A screw anchor drill rig according to claim 1, characterised in that: Torque sensors and pressure sensors are arranged on the force transmission path between the power head and the screw anchor.

5. A screw anchor drill rig according to any one of claims 1 to 4, characterised in that: The lower end of the circumferential end surface of the force transmission head is provided with a reverse protrusion for abutting and matching with the lower end circumferential end surface of the screw anchor disc to reversely rotate the screw anchor disc when the screw anchor connector reversely rotates.

6. A screw anchor adapter for a screw anchor drill rig, characterized in that: The upper end of the screw anchor connector is provided with a connector connecting structure for connecting with the torque output end of the power head, the screw anchor connector is provided with a light rod section through hole for the light rod section of the screw anchor to pass through in the up-down direction, the bottom of the screw anchor connector is a force transmission head for pressing the corresponding screw anchor disc, the lower end surface of the force transmission head is a connector spiral surface for adaptively contacting and matching with the upper side spiral surface of the screw anchor disc, and the circumferential end surface of the force transmission head is used for abutting and matching with the upper end circumferential end surface of the screw anchor disc to positively rotate the screw anchor through the screw anchor connector.

7. A helix anchor connector according to claim 6, wherein: The screw anchor connector is composed of two connector petals arranged in sequence in the circumferential direction, and the two connector petals are detachably connected through transverse bolts.

8. A helix anchor connector according to claim 6, wherein: The upper end of the screw anchor connector is provided with a connector flange, and the connector flange is detachably connected with the torque output end through vertical bolts.

9. The helix anchor connector of claim 6, wherein: The force transmission head is further provided with a light rod connecting structure for achieving the detachable connection with the upper end of the light rod section of the screw anchor.

10. A helix anchor connector according to any one of claims 6 to 9, wherein: The lower end of the circumferential end surface of the force transmission head is provided with a reverse protrusion for abutting and matching with the lower end circumferential end surface of the screw anchor disc to reversely rotate the screw anchor disc when the screw anchor connector reversely rotates.

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