An anchor soil pressure gauge and a support for installation of the anchor soil pressure gauge

Abstract

The utility model provides a kind of ground anchor earth pressure gauge and support for ground anchor earth pressure gauge installation, the support includes support base, main shaft, screw sleeve, screw, steel backing plate, wing plate, annular connecting groove and containing piece, and steel backing plate is equipped at one end of screw, steel backing plate is in contact with the bottom surface of containing piece, and the other end of screw is connected with screw sleeve;Screw sleeve is inserted into main shaft at one end, and relative movement between screw and screw sleeve realizes length adjustment;Main shaft is vertically connected with support base at one end;Wing plate is arranged on support base, and wing plate is evenly distributed on the circumference of main shaft, and hollow slot in axial direction is equipped on wing plate;Annular connecting groove is arranged between wing plate and containing piece, and it is in same straight line with hollow slot;Containing piece is close to / distance from wing plate by annular connecting groove;Containing piece is configured to install ground anchor earth pressure gauge.The ground anchor earth pressure gauge includes the support for ground anchor earth pressure gauge installation described above.The utility model has the beneficial effect that support length can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of directional drilling construction for oil and gas pipeline installation technology, specifically to a ground anchor soil pressure gauge and a bracket for installing the ground anchor soil pressure gauge. Background Technology

[0002] Ground anchors provide sufficient resistance to horizontal directional drilling rigs when outputting thrust (pull) force. The passive earth pressure formed by the ground anchor and the soil in front of it can roughly reflect the magnitude of the drilling rig's output traction force. They effectively help drillers and technicians avoid the quality risks of excessive stress on the drill string leading to rod breakage, or the risk of the ground anchor reaching its ultimate strength and becoming unstable, making them extremely important engineering parameters.

[0003] Currently, in the trenchless pipeline industry, there is no effective means to monitor the magnitude of passive earth pressure generated by the drilling rig's anchors. The most important method is to manually convert the hydraulic oil pressure value displayed on the instruments on the drilling rig's control panel into a table provided by the manufacturer that compares the hydraulic oil pressure value with the drilling rig's traction force.

[0004] To facilitate operators' intuitive monitoring of pressure value changes and provide a reference for subsequent operations, the vibrating wire earth pressure gauge, commonly used in slope or foundation pit engineering, is directly applied to the monitoring of anchor resistance in horizontal directional drilling rigs. However, due to differences in their force application methods and installation sequences, the following technical problems arise during use: 1) In slope engineering, a retaining wall is first constructed, then a pressure gauge is installed on the back of the retaining wall, and finally the soil is released. The soil pressure is generated by the sliding force formed by the soil's own weight, causing the soil to adhere tightly to the surface of the pressure gauge. However, in drilling rig ground anchors, the earth pressure gauge is first installed inside the ground anchor (analogous to a retaining wall), and then the complete ground anchor is formed (by pouring concrete). It is difficult to ensure that the pressure gauge's force-bearing surface is tightly attached to the natural soil interface, thus affecting the accurate acquisition of pressure magnitude by the pressure-sensitive element.

[0005] 2) In foundation pit engineering, rod-type supports are often used for active earth pressure monitoring. Because the active earth pressure is smaller than the passive earth pressure under the same geological conditions, the rod structure is sufficient to resist the earth pressure without deformation. However, the ground anchor of a horizontal directional drilling rig is subjected to extremely large instantaneous passive earth pressure during construction, and the simple rod structure is prone to buckling, exhibiting poor structural stability.

[0006] To facilitate real-time observation of the passive earth pressure on the anchor by the driller and technicians, and also for convenient monitoring from the control room, a vibrating wire earth pressure gauge is used as a pressure-sensitive element on the front of the anchor. When subjected to external force, the vibrating wire earth pressure gauge senses pressure changes through internal strain and converts this into a visible signal via a data acquisition module. However, earth pressure gauges have never been installed inside the anchors of horizontal directional drilling rigs in the industry before. In this situation, it is unclear how to fix the earth pressure gauge within the anchor. Therefore, it is necessary to design a support for the earth pressure gauge installation that can adapt to different anchor sizes and be site-adjustable. Utility Model Content

[0007] The purpose of this invention is to address at least one of the aforementioned shortcomings of the existing technology. For example, one objective of this invention is to provide an installation bracket that is adjustable in length, suitable for different anchor sizes, and structurally stable. Another objective of this invention is to provide a conveniently implemented earth pressure gauge for anchors.

[0008] To achieve the above objectives, this utility model provides a bracket for installing a ground anchor earth pressure gauge. The bracket may include a bracket base, a main shaft, a lead screw sleeve, a lead screw, a steel pad, a wing plate, an annular connecting groove, and a receiving component. One end of the lead screw is provided with a steel pad, which contacts the bottom surface of the receiving component. The other end of the lead screw is connected to the lead screw sleeve. One end of the lead screw sleeve is inserted into the main shaft, allowing relative movement between the lead screw and the lead screw sleeve to adjust its length. One end of the main shaft is perpendicularly connected to the bracket base. Wing plates are disposed on the bracket base and are evenly distributed around the circumference of the main shaft, with axially oriented perforated grooves on the wing plates. The annular connecting groove is disposed between the wing plate and the receiving component, and is aligned with the perforated grooves. The receiving component can move closer to / away from the wing plate via the annular connecting groove. The receiving component is configured to install the ground anchor earth pressure gauge.

[0009] According to one or more exemplary embodiments of one aspect of the present invention, a locking nut is provided on the lead screw, the entire inside of the lead screw sleeve is threaded, the lead screw is rotated into the lead screw sleeve through the thread, and after determining the length, the locking nut is rotated to fix the lead screw.

[0010] According to one or more exemplary embodiments of one aspect of the present invention, the receiving member may include a pressure plate slot, push-in screws and a base plate, wherein the pressure plate slot has a cutout; a plurality of push-in screws are evenly arranged in the circumferential direction of the pressure plate slot, and the base plate is fixed to the bottom of the pressure plate slot.

[0011] According to one or more exemplary embodiments of one aspect of the present invention, the pressure plate slot may be provided with a wire-passing groove, which is configured to allow a cable to pass through and extend to the ground.

[0012] According to one or more exemplary embodiments of one aspect of the present invention, the bottom surface of the base plate may be provided with a perforated plate, and the two ends of the annular connecting groove may be respectively provided with a top fixing bolt and a bottom fixing bolt. One end of the annular connecting groove is connected to the perforated plate through the top connecting bolt, and the other end is connected to the hollow groove through the bottom fixing bolt.

[0013] According to one or more exemplary embodiments of one aspect of the present invention, the length of the wing plate may be no less than 2 / 3 of the length of the main shaft.

[0014] According to one or more exemplary embodiments of one aspect of the present invention, a plurality of bolt holes may be evenly distributed in the circumferential direction of the bracket base.

[0015] According to one or more exemplary embodiments of one aspect of the present invention, the lead screw sleeve may include a straight rod section and a stepped section, the diameter of the straight rod section may be smaller than the diameter of the stepped section, the straight rod section is inserted into the spindle; the stepped section is connected to the lead screw.

[0016] According to one or more exemplary embodiments of one aspect of the present invention, the material of the spindle may include carbon steel.

[0017] Another aspect of this utility model provides a ground anchor soil pressure gauge, which may include a soil pressure gauge body and a bracket for installing the ground anchor soil pressure gauge as described above, wherein the soil pressure gauge body is disposed within a receiving member.

[0018] Compared with the prior art, the beneficial effects of this utility model include at least one of the following: (1) The bracket provided by this utility model can adjust the length of the bracket to ensure that it can adapt to ground anchors of different sizes.

[0019] (2) The bracket provided by this utility model has a certain structural strength and does not yield or deform under horizontal compressive force.

[0020] (3) The earth pressure gauge provided by this utility model has a stable overall structure and can adjust its own structural dimensions according to different construction requirements. Attached Figure Description

[0021] The above and other objects and / or features of this utility model will become clearer from the following description taken in conjunction with the accompanying drawings, wherein: Figure 1 An isometric view of the support structure of an exemplary embodiment of the present invention is shown; Figure 2 A side view of the support structure of an exemplary embodiment of the present invention is shown; Figure 3 A structural plan view of the bracket of an exemplary embodiment of the present invention is shown; Figure 4 A plan view of a lead screw sleeve according to an exemplary embodiment of the present invention is shown; Figure 5 A side view of a lead screw sleeve of an exemplary embodiment of the present invention is shown; Figure 6 An isometric view of a lead screw sleeve according to an exemplary embodiment of the present invention is shown.

[0022] Explanation of key figure labels: 1-Accommodation component, 2-Wire groove, 3-Push-in screw, 4-Top fixing bolt, 5-Annular connecting groove, 6-Screw rod, 7-Locking nut, 8-Screw rod sleeve, 9-Main shaft, 10-Wing plate, 11-Bolt hole, 12-Bracket base, 13-Hollow slot, 14-Lower fixing bolt, 15-Steel pad, 16-Hole plate. Detailed Implementation

[0023] In the following description, an anchored earth pressure gauge and a bracket for installing the anchored earth pressure gauge will be described in detail with reference to exemplary embodiments.

[0024] In the description of this application, it should be understood that the terms "upper," "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Exemplary Example 1 This exemplary embodiment provides a bracket for installing a ground anchor earth pressure gauge.

[0027] Figure 1 An isometric view of the support structure of an exemplary embodiment of the present invention is shown; Figure 2 A side view of the support structure of an exemplary embodiment of the present invention is shown; Figure 3 A structural plan view of the bracket of an exemplary embodiment of the present invention is shown; Figure 4A plan view of a lead screw sleeve according to an exemplary embodiment of the present invention is shown; Figure 5 A side view of a lead screw sleeve of an exemplary embodiment of the present invention is shown; Figure 6 An isometric view of a lead screw sleeve according to an exemplary embodiment of the present invention is shown below. Figures 1-6 This exemplary embodiment describes a bracket for mounting a ground anchor earth pressure gauge.

[0028] like Figure 1 As shown in Figure 2, the bracket for installing the ground anchor earth pressure gauge mainly includes a bracket base 12, a main shaft 9, a lead screw sleeve 8, a lead screw 6, a steel pad 15, and a receiving component 1. One end of the lead screw 6 is provided with a steel pad 15, and the lead screw 6 is connected to the steel pad 15, for example, by welding. The steel pad 15 at one end of the lead screw 6 enhances the punching shear strength when the lead screw 6 contacts the receiving component 1, preventing the receiving component 1 from being punctured under excessive force. The other end of the lead screw 6 is connected to the lead screw sleeve 8, one end of which is inserted into the main shaft 9. The lead screw 6 and the lead screw sleeve 8 can move relative to each other to achieve length adjustment. One end of the main shaft 9 is vertically connected to the bracket base 12, and the main shaft 9 can be welded to the bracket base 12. The main shaft 9 can be welded to the center of the bracket base 12. Specifically, the support base may include a flat flange with a diameter of 0.35~0.5m and a thickness of 1cm, such as a flat flange with a diameter of 0.37m, 0.44m, or 0.47m and a thickness of 1cm; or a steel plate with a thickness of 1cm can be machined into a circular cross-section with a hole diameter of approximately 1cm as the support base. Of course, this utility model is not limited to this; other flat flanges or steel plates can also be used as the support base as long as the construction requirements are met. Meanwhile, the main shaft may be made of seamless steel pipe with a length of 0.8~1.0m and a diameter of 30~40mm, such as a seamless steel pipe with a length of 0.84m, 0.9m, or 0.96m and a diameter of 33mm, 36mm, or 37mm. The material of the seamless steel pipe may include high-strength steel, such as 45# steel. Furthermore, the lead screw may include an M20 coarse-thread lead screw with a length of 0.5~0.6m (outer diameter 20mm, pitch 2.5mm, standard workpiece).

[0029] One end of the lead screw sleeve 8 is inserted into the main shaft 9. The lead screw sleeve 8 and the main shaft 9 can be fixedly connected, for example, by welding. The entire inner wall of the lead screw sleeve 8 is threaded. Here, the wall thickness of the lead screw sleeve 8 can be 8~10mm, for example, 8.3mm, 9mm or 9.6mm; the length of the lead screw sleeve 8 can be 0.3~0.4m, for example, 0.34m, 0.36m or 0.38m; the thread depth is 2.5mm, and the thread pitch can be 2.5mm. The lead screw 6 is inserted into the lead screw sleeve 8 by rotating the thread. After determining the length, the locking nut 7 is rotated and tightened to fix the lead screw 6. The locking nut can be M20.

[0030] Several wing plates 10 can be evenly arranged in the circumferential direction of the main shaft 9, such as Figure 3 As shown, for example, four wing plates 10 are provided. The thickness of the wing plates can be 6~8mm, such as 6.3mm, 7mm or 7.6mm. The wing plates 10 are located at one end of the main shaft near the support base and are welded to the support base 12. Figure 1 As shown in Figure 2, an axially oriented perforated groove 13 may be provided on the wing plate 10. For example, a straight groove with a width of 8-10 mm may be cut on the wing plate 10 as the perforated groove 13. Here, the partial perforation design of the wing plate 10 can reduce the overall weight of the structure. In addition, the perforated groove 13 can also provide space for bolt fixing of the annular connecting groove 5.

[0031] The annular connecting groove 5 may be longitudinally disposed between the wing plate 10 and the base plate and aligned with the hollow groove, allowing the receiving component to move closer to or further away from the wing plate via the annular connecting groove. The number of annular connecting grooves 5 corresponds to the number of wing plates 10; for example, four annular connecting grooves may be provided to match the number of wing plates. The width of the annular connecting groove 5 may be the same as the width of the hollow groove 13. For example, a steel plate with a thickness of 4-6 mm may be used to process an annular connecting groove with a net width of 8-10 mm and a length that is 1.5 times the length of the wing plate.

[0032] The housing can be configured to mount a ground anchor earth pressure gauge.

[0033] In this exemplary embodiment, as Figure 1 , 2 As shown in Figure 3, the receiving component 1 may include a pressure plate slot, an jacking screw 3, and a base plate. The pressure plate slot has a notch as a cable passage 2 for the cable of the earth pressure gauge's metal pressure plate to pass through. Several jacking screws 3 are evenly distributed circumferentially in the pressure plate slot. The base plate is fixed to the bottom of the pressure plate slot. The width of the cable passage can be 1 cm. Here, the pressure plate slot can be made of a steel pipe ring with a length of 1.5~2 cm, such as 1.7 cm, 1.8 cm, or 1.9 cm, and a wall thickness of 10 mm. The base plate is fixed to the bottom of the pressure plate slot and can be made of a circular steel plate with a diameter of 0.2~0.3 m, such as 0.22 m, 0.24 m, or 0.26 m, and a thickness of 1 cm. The steel pipe ring can have the same diameter as the base plate. Specifically, the jacking screw can be threaded using a tap matched with an M2 copper screw, and then the M2 copper screw can be inserted from the outside in as the jacking screw.

[0034] In this exemplary embodiment, as Figure 1As shown in Figure 2, the bottom surface of the base plate may be provided with a perforated plate 16. The cross-section of the perforated plate 16 may be an inverted "arch-shaped" structure, and the spacing between the holes at the center of the structure may be 6~8mm. One end of the annular connecting groove 5 may be located inside the perforated plate 16 and locked by the top fixing bolt 4, thereby fixing the annular connecting groove 5 to the base plate. The other end of the annular connecting groove 6 may be locked to the hollow groove 13 of the wing plate 10 by the lower fixing bolt 14. The size of the top fixing bolt 4 and the lower fixing bolt 14 may be determined according to the specific dimensions of the perforated plate 16 and the annular connecting groove 5.

[0035] During the length adjustment process of the lead screw 6, the receiving part 1, along with the lower perforated plate 16, also needs to rotate. It is difficult to ensure that the perforated plate 16 and the wing plate 10 are on the same straight line. Installing a reinforcing member between the wing plate 10 and the base plate can ensure that the perforated plate 16 and the wing plate 10 are on the same straight line, so that the receiving part 1 is not affected by the change in the rotation position of the lead screw 6, and can ultimately provide sufficient support for the receiving part 1. Specifically, after the lead screw 1 is adjusted to a suitable length, the annular connecting grooves 5 in four directions can be installed in sequence, and the fixed position of the annular connecting grooves 5 on the wing plate 10 can be adjusted so that the fixed height of the annular connecting grooves 5 is adapted to the length of the lead screw 6. Then, the base plate is locked to the annular connecting grooves 5 by the top fixing bolts 4. At this time, the steel pad 15 is in contact with the base plate, and the steel pad 15 provides support for the base plate.

[0036] In this exemplary embodiment, the length of the wing plate may be no less than 2 / 3 of the length of the main shaft.

[0037] In this exemplary embodiment, as Figure 1 , 2 As shown in Figure 3, the bracket base may have several bolt holes 11 evenly distributed in the circumferential direction.

[0038] In this exemplary embodiment, as Figure 4 , 5 As shown in example 6, the lead screw sleeve may include a straight rod section and a stepped platform, the height of which may be 1~1.5m. The diameter of the straight rod section is smaller than the diameter of the stepped platform, and the end with the smaller diameter can be inserted into the spindle, i.e., the straight rod section is inserted into the spindle. The stepped platform connects to the lead screw, and the nozzle of the spindle is connected to the stepped platform, for example, by welding. In this exemplary embodiment, the material of the spindle may include high-strength steel, such as carbon steel, for example, 45#.

[0039] The bracket installation method for the earth pressure gauge of this utility model may include the following steps: Select a flat flange with a diameter of about 0.35~0.5m and a thickness of about 1cm (or a steel plate with a thickness of 1cm can be processed into a circular cross section and a hole with a diameter of about 1cm) as the support base.

[0040] Select a seamless steel pipe approximately 0.8-1.0m long and 30-40mm in diameter, made of 45# or higher strength steel, as the main shaft of the support. Weld one end of the pipe to the center of the support base.

[0041] Four symmetrical flanges, 6-8mm thick, are welded around the spindle steel tube. The flanges can be rectangular with one end tapering, and the length of each flange is no less than 2 / 3 of the steel tube length, used to enhance the overall strength of the spindle. A straight slot (hollowed-out slot) with a width of 8-10mm and a length no less than 1 / 2 of the flange's length is cut into each flange. This structure reduces the overall weight of the support and provides space for bolt installation of the fixing positioning ring.

[0042] Select a short steel pipe section with a wall thickness of 8-10mm (a thick-walled steel pipe with a diameter of 50mm can also be used), with an outer diameter slightly larger than the outer diameter of the main spindle, and a length of approximately 0.3-0.4m. At approximately half the length, machine a straight step (step section) using a lathe, with a step height of approximately 1-1.5cm. This ensures that the smaller diameter section (straight rod section) can be inserted into the inner cylinder of the main spindle. Then, using a lathe, machine threads along the entire inner wall of the steel pipe section, with a depth of 2.5mm and a thread pitch of 2.5mm. This completes the machining of the lead screw sleeve.

[0043] Insert the smaller diameter end of the lead screw sleeve into the main shaft, and then weld it to the main shaft steel pipe at the step. At this point, the support's fixing structure is complete.

[0044] Another circular steel plate with a diameter of about 0.2-0.3m and a thickness of 1cm is used as the base plate for installing the pressure disc of the earth pressure gauge. Then, a steel pipe ring of the same diameter (about 1.5-2cm in length and about 10mm in wall thickness) is cut and welded to the base plate to form a groove (pressure disc groove). Then, a cut of about 1cm in width is made in the steel pipe ring (wire groove) for the cable of the earth pressure metal pressure disc to pass through and extend to the ground.

[0045] Four holes are symmetrically drilled around the pressure plate slot, and threads are machined using a tap and an M2 copper screw. Then, an M2 copper screw is inserted from the outside in as a push-in screw.

[0046] Four perforated plates are welded onto the base plate. The number and thickness of the perforated plates can be the same as the number of flanges. The cross-section of the perforated plates is an inverted "arch shape", with a hole of about 6-8 mm in diameter at the center.

[0047] Select a 4-6mm thick steel plate and machine an annular connecting groove with a net width of 8-10mm and a length 1.5 times the length of the flange. Use the annular connecting groove to connect the flange to the perforated plate, and use top fixing bolts to fix the annular connecting groove to the perforated plate, while using bottom fixing bolts to fix the annular connecting groove to the flange. The bolt size is selected according to the diameter of the perforated plate and the groove opening. Select a lead screw of about 0.5-0.6m in length, model: M20 coarse thread (outer diameter 20mm, pitch 2.5mm, standard workpiece), and weld one end of it to the center position of the steel pad.

[0048] Select an M20 lock nut and rotate it through the other end of the lead screw. This completes the machining of the movable end of the bracket.

[0049] The movable end of the bracket is inserted into the fixed end (screw sleeve and spindle) through the thread of the lead screw. At this time, the steel pad and the base plate come into contact, forming a central support, and the bracket is completed.

[0050] In practical use, after determining the support height of the lead screw and the appropriate position of the pressure plate slot, the current structure can be fixed first using the annular connecting groove. Then, tighten the top and bottom fixing bolts to complete the tightening of the outer reinforcement components. Next, rotate the lead screw so that the steel pad at the top of the lead screw is tightly against the bottom plate of the pressure plate slot.

[0051] Exemplary Example 2 This exemplary embodiment provides a ground anchor earth pressure gauge.

[0052] The ground anchor earth pressure gauge mainly includes an earth pressure gauge body and a bracket for installing the ground anchor earth pressure gauge as described in Exemplary Example 1. The earth pressure gauge body can be housed within a receiving component.

[0053] In summary, the advantages of this utility model may include at least one of the following: (1) The bracket provided by this utility model can adjust the size of the bracket according to the site conditions so that the pressure-sensitive element of the pressure gauge is in close contact with the ground.

[0054] (2) The support structure provided by this utility model is simple and easy to operate, has a certain structural strength, and will not deform.

[0055] (3) The earth pressure gauge provided by this utility model is easy to operate and its own structure can be adjusted to meet the testing requirements.

[0056] Although the present invention, including a ground anchor earth pressure gauge and a bracket for installing the ground anchor earth pressure gauge, has been described above in conjunction with exemplary embodiments, those skilled in the art should understand that various modifications and changes can be made to the exemplary embodiments of the present invention without departing from the spirit and scope defined by the claims.

Claims

1. A bracket for installing a ground anchor earth pressure gauge, characterized in that, The support includes a support base, a main shaft, a lead screw sleeve, a lead screw, a steel pad, a wing plate, an annular connecting groove, and a receiving component, wherein... One end of the lead screw is equipped with a steel pad, which contacts the bottom surface of the receiving part. The other end of the lead screw is connected to the lead screw sleeve. One end of the lead screw sleeve is inserted into the main shaft, and the lead screw and the lead screw sleeve can move relative to each other to achieve length adjustment. One end of the main shaft is vertically connected to the support base. The wing plates are mounted on the support base and are evenly distributed around the main shaft. The wing plates have axially oriented perforated grooves. An annular connecting groove is located between the wing plates and the receiving component and is aligned with the perforated grooves. The receiving component can move closer to or further away from the wing plates through the annular connecting groove. The receiving component is configured to install a ground anchor earth pressure gauge.

2. The bracket for installing a ground anchor earth pressure gauge according to claim 1, characterized in that, A locking nut is provided on the lead screw, and the entire inside of the lead screw sleeve is threaded. The lead screw is inserted into the lead screw sleeve by rotating the thread, and after determining the length, the locking nut is rotated to fix the lead screw.

3. The bracket for installing a ground anchor earth pressure gauge according to claim 1, characterized in that, The receiving component includes a pressure plate slot, push-in screws, and a base plate. The pressure plate slot has a notch. Several push-in screws are evenly arranged in the circumferential direction of the pressure plate slot. The base plate is fixed to the bottom of the pressure plate slot.

4. The bracket for installing a ground anchor earth pressure gauge according to claim 3, characterized in that, The pressure plate slot is provided with a cable pass-through groove, which is configured to allow the cable to pass through and extend to the ground.

5. The bracket for installing a ground anchor earth pressure gauge according to claim 3, characterized in that, The bottom surface of the base plate is provided with a perforated plate. The two ends of the annular connecting groove are respectively provided with a top fixing bolt and a bottom fixing bolt. One end of the annular connecting groove is connected to the perforated plate through the top connecting bolt, and the other end is connected to the hollow groove through the bottom fixing bolt.

6. The bracket for installing a ground anchor earth pressure gauge according to claim 1, characterized in that, The length of the wing plate is not less than 2 / 3 of the length of the main shaft.

7. The bracket for installing a ground anchor earth pressure gauge according to claim 1, characterized in that, The support base has several bolt holes evenly distributed in the circumferential direction.

8. The bracket for installing a ground anchor earth pressure gauge according to claim 1, characterized in that, The lead screw sleeve includes a straight rod section and a stepped section. The diameter of the straight rod section is smaller than the diameter of the stepped section. The straight rod section is inserted into the spindle. The stepped section is connected to the lead screw.

9. The bracket for installing a ground anchor earth pressure gauge according to claim 1, characterized in that, The spindle is made of carbon steel.

10. A ground-anchored earth pressure gauge, characterized in that, The ground anchor earth pressure gauge includes an earth pressure gauge body and a bracket for installing the ground anchor earth pressure gauge as described in any one of claims 1 to 9, wherein the earth pressure gauge body is disposed within a receiving member.

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