Anchor clamp for amplifying anchoring force and method of using the same

Abstract

The present invention discloses an anchor clamp for amplifying anchoring force and a method for using the same, wherein the anchor clamp comprises: a clamping unit, a force transmission unit and an anchoring force amplifying unit; wherein the clamping unit is fixedly arranged around the outside of the anchor; the force transmission unit is fixedly arranged at the bottom end of the clamping unit; the anchoring force amplifying unit is fixedly arranged on a side of a plurality of the clamping units away from the anchor; after the clamping unit preliminarily clamps the anchor, the static load test pulling force is transmitted to the clamping unit and the anchoring force amplifying unit through the force transmission unit, so as to amplify the anchoring force and enable the anchor clamp to further clamp the anchor, and after the pulling force disappears, the force transmission unit and the anchoring force amplifying unit become invalid, thereby facilitating the disassembly of the anchor clamp, which not only improves the clamping effect and structural stability of the anchor clamp, simplifies the maintenance and replacement process, enhances the adaptability to complex work sites, but also further improves the safety and economy of the anchor clamp.

Description

Technical Field

[0001] The present invention belongs to the technical field of fastening equipment, and more specifically, relates to an anchor rod clamp for amplifying anchoring force and a method of using the same. Background Art

[0002] The anchor pile static load test and the pile pullout static load test are two field test methods used to evaluate the bearing performance of pile foundations. These tests are essential to ensure that the pile foundation design in building and infrastructure projects meets safety and functional requirements. By simulating the stress conditions of the pile foundation under actual working conditions, these tests provide important data on the bearing capacity and settlement behavior of the pile foundation. During the traditional static load test, the test pile is placed in a predetermined position and a vertical load or an upward tension is applied through the loading device. At the same time, the surrounding anchor piles are used to fix the test pile to prevent it from moving during the loading process. During the test, the bearing characteristics and settlement curve of the pile foundation are evaluated by measuring the settlement of the pile top or monitoring the relationship between the displacement and tension of the pile top to provide data that directly reflects the performance of the pile foundation under actual engineering conditions.

[0003] In the prior art, a Chinese patent application with document number CN113152539A discloses a prefabricated pile static pull-out load test device and method. In the patent, the pile has a pull-out steel bar extending from the end face. The pile static pull-out load test device includes a reaction device and a loading device. The reaction device includes a support platform and a first pier. The loading device includes an anchor plate, a jack and a pull-out steel bar locking structure. The pull-out steel bar locking structure includes a fixing member, a first anchor beam, a second anchor beam and a connecting member. The second anchor beam is erected on the first anchor beam. There is a spacing between two adjacent second anchor beams for the pull-out steel bar to extend. The fixing member is used to be fixedly connected to the pull-out steel bar. The fixing member is tightly pressed against the two adjacent second anchor beams. The connecting member is used to connect the anchor plate and the first anchor beam.

[0004] The pile pull-out static load test device of the Chinese patent application with document number CN113152539A is suitable for pull-out piles of various types and diameters and has a large test load range. It does not require welding, is flexible to assemble, and is easy to install. It shortens the test preparation time and improves the success rate of the pull-out test. However, it still cannot solve the following problems existing in the static load test: First, when the main reinforcement arrangement of the on-site anchor piles is ever-changing, it is difficult to pass all the main reinforcements through the platform holes; second, during the pulling or static load application process, when the tension or load is large, the clamp and the anchor rod or steel hinge wire will produce a large sliding displacement, resulting in a decrease in the success rate of the pull-out test; third, after the static load test is completed, devices such as anchors still firmly clamp the steel hinge wire, resulting in difficulty in disassembly and reducing construction efficiency. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides an anchor clamp for amplifying the anchoring force and a method for using the same, wherein the static load test pulling force is transmitted to the clamping unit and the anchoring force amplifying unit through a force transmission unit, thereby amplifying the anchoring force and allowing the anchor clamp to further clamp the anchor, and after the pulling force disappears, the force transmission unit and the anchoring force amplifying unit become invalid, thereby facilitating the disassembly of the anchor clamp, which not only improves the clamping effect and structural stability of the anchor clamp, simplifies the maintenance and replacement process, enhances the adaptability to complex work sites, but also further improves the safety and economy of the anchor clamp.

[0006] In order to achieve the above-mentioned object, the present invention provides an anchor clamp for amplifying anchoring force, comprising: a clamping unit, a force transmission unit and an anchoring force amplifying unit, wherein:

[0007] The clamping unit is used to directly clamp the anchor rod, and comprises a clamping piece and a fulcrum; a plurality of the clamping pieces are fixedly arranged on both sides of the anchor rod; the fulcrum is fixedly arranged at the middle part of the outer side of the clamping piece;

[0008] The force transmission unit is used to transmit the static load test pulling force to the clamping unit and the anchoring force amplification unit, and includes a force transmission ring and a base; the force transmission ring is fixedly sleeved on the anchor rod and fixedly arranged at the bottom end of the clip; the base is fixedly sleeved on the anchor rod and fixedly arranged at the bottom end of the force transmission ring;

[0009] The anchoring force amplification unit is used to convert the static load test pulling force transmitted by the force transmission unit into a horizontal thrust on the anchor rod, and comprises: a first tension ring, a first lever, a second tension ring, a second lever and a latch; the first tension ring and the second tension ring are both fixedly mounted on the outside of the clip and located below the fulcrum, and the first tension ring is inserted into the second tension ring from the left side; the first lever is fixedly mounted inside the first tension ring; the second lever is fixedly mounted inside the second tension ring; the latch is fixedly mounted between the first tension ring and the second lever, so as to conveniently realize the stable mounting of the anchoring force amplification unit on the outside of the clip, and realize the convenient disassembly of the anchor rod clamp after completing the static load test.

[0010] Furthermore, the base includes: a base body, a groove and a first fixed shaft; the base body is fixed at the bottom end of the force transmission ring; the groove is fixed at the upper end of the middle part of the base; a plurality of the first fixed shafts pass through both sides of the upper end of the base body and are fixed inside the groove.

[0011] Furthermore, the lower ends of the first lever and the second lever both fall into the groove, and the first lever is rollingly connected to the first fixed shaft on the left side, and the second lever is rollingly connected to the first fixed shaft on the right side.

[0012] Furthermore, the inner diameter of the force transmission ring is larger than the outer diameter of the anchor rod and smaller than the sum of the thickness of the two clips and the outer diameter of the anchor rod, and the outer diameter of the force transmission ring is smaller than the distance between the two first fixed axes.

[0013] Furthermore, the first tension ring includes: a first side plate, a first tension frame, a first protrusion and a second protrusion; the first side plate is fixedly arranged on the left side of the left clip; the first protrusion is fixedly arranged on the upper side of the two ends of the right side of the first side plate; the second protrusion is fixedly arranged on the lower side of the two ends of the right side of the first side plate; the upper ends of the brackets at both ends of the first tension frame are respectively fixedly connected to the bottom end of the first protrusion, and the bottom ends of the brackets at both ends are respectively fixedly connected to the upper end of the second protrusion, and the right crossbeam fits the right clip.

[0014] Furthermore, the second tension ring includes: a second side plate, a second tension frame and a third tension frame; the second side plate is fixedly arranged on the right side of the right clip; two ends of the second tension frame are respectively fixedly connected to the upper sides of the left ends of the second side plate and the left crossbeam fits the left clip; two ends of the third tension frame are respectively fixedly connected to the lower sides of the left ends of the second side plate and the left crossbeam fits the left clip.

[0015] Furthermore, the second lever includes: a second lever body and a second movable shaft, the second lever body is vertically fixed inside the second tension ring and an arc-shaped slide groove is fixed on the inner side of the middle part thereof; the second movable shaft is fixed at the upper ends of both ends of the third tension frame and is movably connected to the third tension frame, and is adapted to the arc-shaped slide groove on the inner side of the middle part of the second lever body; a fifth protrusion is fixed on the middle part of the outer side of the second movable shaft and a plurality of sixth protrusions are fixed on the upper and lower sides of the fifth protrusion.

[0016] Furthermore, the vertical distance between the second tension frame and the third tension frame is adapted to the height of the first tension frame.

[0017] Further, the first lever includes a first lever body and a first movable shaft, the first lever body is vertically fixed inside the first tension ring and an arc-shaped slide groove is fixed on the inner side of the middle part thereof; the two ends of the first movable shaft are respectively movably connected to the square through holes at the front end and the rear end of the first tension ring and are fixed inside the first tension ring, which are adapted to the arc-shaped slide groove on the inner side of the middle part of the first lever body; a third protrusion is fixed on the middle part of the outer side of the first movable shaft and a plurality of fourth protrusions are fixed on the upper and lower sides of the third protrusion.

[0018] Another aspect of the present invention provides a method for using an anchor rod clamp to amplify the anchoring force, which is implemented by using the anchor rod clamp as described above, and comprises the following steps:

[0019] S1: Check whether the anchor rod clamp is intact; clean the anchor rod clamping area;

[0020] S2: sequentially sleeve the base and the force transmission ring on the anchor rod clamping area, and make the base stably contact with the pulling force generating device;

[0021] S3: inserting the first lever into the first tension ring, inserting the second lever into the second tension ring, then inserting the first tension ring into the second tension ring from the left side, and sleeve the first tension ring and the second tension ring on the clamping area;

[0022] S4: placing the two clips opposite to each other and moving them downward along the anchor rod until the bottom end of the clip passes through the first tension ring and the second tension ring and contacts the upper end of the force transmission ring, inserting the pin between the first tension ring and the second lever, so that the anchoring force amplification unit pre-clamps the clip;

[0023] S5: after repeating steps S1 to S4 to complete the installation of the anchor rod clamps on all the anchor rods, start the static load test device to perform a static load test;

[0024] S6: After the static load test is completed, the pin is pulled out and the anchor clamp is disassembled in an orderly manner.

[0025] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0026] 1. The anchor rod clamp of the present invention transmits the static load test pulling force to the clamping unit and the anchoring force amplification unit through the force transmission unit, thereby realizing anchoring force amplification so that the anchor rod clamp further clamps the anchor rod, and after the pulling force disappears, the force transmission unit and the anchoring force amplification unit become invalid, thereby facilitating the disassembly of the anchor rod clamp, which not only improves the clamping effect and structural stability of the anchor rod clamp, simplifies the maintenance and replacement process, enhances the adaptability to complex work sites, and further improves the safety and economy of the anchor rod clamp.

[0027] 2. The anchor rod clamp of the present invention inserts the pin between the second lever and the first tension ring so that the first tension ring and the second tension ring pre-compress the clip, thereby conveniently realizing that the anchoring force amplification unit is stably sleeved on the outside of the clip.

[0028] 3. The anchor rod clamp of the present invention blocks excessive upward movement of the base through the force transmission ring, thereby avoiding damage to the anchoring force amplification unit and the clip and increasing the service life of the anchor rod clamp. At the same time, the upward thrust formed by the static load test pulling force transmitted by the force transmission ring cooperates with the anti-slip stripes on the inner side of the clip to further enhance the friction and gripping force between the clip and the anchor rod.

[0029] 4. The anchor rod clamp of the present invention increases friction by adding anti-slip stripes on the inner side of the clamping piece that match the ribs or spiral patterns on the outer side of the anchor rod, thereby further providing additional stability and safety during the clamping process.

[0030] 5. The anchor clamp of the present invention applies additional anchoring force on both sides of the clip through the tension ring and the lever, thereby improving the overall stability of the structure, helping to provide additional safety protection for the project, resisting displacement or loosening that may be caused by factors such as environmental changes, load fluctuations or unexpected impacts, and ensuring the long-term safety of the anchoring structure. In addition, this reinforcement measure can also reduce the need for maintenance and repair, extend the service life of the device, and reduce long-term operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an anchor rod clamp according to an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of the assembly of the force transmission unit according to an embodiment of the present invention;

[0033] Figure 3 It is a schematic structural diagram of a first tension ring and a first lever according to an embodiment of the present invention;

[0034] Figure 4 It is a schematic diagram of assembling the first tension ring and the first lever according to an embodiment of the present invention;

[0035] Figure 5 It is a schematic structural diagram of a second tension ring and a second lever according to an embodiment of the present invention;

[0036] Figure 6 It is a schematic diagram of assembling the second tension ring and the second lever according to an embodiment of the present invention;

[0037] Figure 7 This is a structural schematic diagram of an anchoring force amplification unit according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of assembling a clip according to an embodiment of the present invention;

[0039] Fig. 9 This is a schematic diagram of the assembly of the latch according to an embodiment of the present invention;

[0040] Fig.10The present invention is a schematic diagram of the steps of using the anchor clamp according to an embodiment of the present invention.

[0041] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-anchor rod, 2-clip, 3-fulcrum, 4-force transmission ring, 5-base, 501-base body, 502-groove, 503-first fixed axis, 6-first tension ring, 601-first side plate, 602-first tension frame, 603-first protrusion, 604-second protrusion, 7-first lever, 701-first lever body, 702-first movable axis, 702a-third protrusion, 702b-fourth protrusion, 8-second tension ring, 801-second side plate, 802-second tension frame, 803-third tension frame, 9-second lever, 901-second lever body, 902-second movable axis, 902a-fifth protrusion, 902b-sixth protrusion, 10-pin. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] like Figures 1 to 9 As shown, an embodiment of the present invention provides an anchor clamp for amplifying anchoring force, comprising: a clamping unit, a force transmission unit and an anchoring force amplifying unit; wherein the clamping unit is fixedly arranged around the outside of the anchor 1; the force transmission unit is fixedly arranged at the bottom end of the clamping unit; the anchoring force amplifying unit is fixedly arranged on a side of several clamping units away from the anchor 1; after the clamping unit preliminarily clamps the anchor 1, the static load test pulling force is transmitted to the clamping unit and the anchoring force amplifying unit through the force transmission unit, so as to achieve anchoring force amplification so that the anchor clamp further clamps the anchor 1, and after the pulling force disappears, the force transmission unit and the anchoring force amplifying unit fail, thereby facilitating the disassembly of the anchor clamp, which not only improves the clamping effect and structural stability of the anchor clamp, simplifies the maintenance and replacement process, enhances the adaptability to complex work sites, and further improves the safety and economy of the anchor clamp.

[0044] Specifically, Figure 1 , Figure 8 and Fig. 9 As shown, the clamping unit is used to directly clamp the anchor rod 1, and comprises: a clamping piece 2 and a fulcrum 3;

[0045] The clips 2 are fixedly arranged on both sides of the anchor rod 1 and have anti-slip stripes fixedly arranged on the inner side, and the whole is an arc-shaped tile; a plurality of the clips 2 can clamp and fix the anchor rod 1;

[0046] Preferably, the anti-slip stripes match the ribs or spirals on the outer side of the anchor rod 1 to increase friction, thereby providing additional stability and safety during the clamping process;

[0047] The fulcrum 3 is fixedly arranged at the middle of the outer side of the clip 2, and is a block with one side being arc-shaped as a whole, and the arc-shaped side matches the curvature of the outer side of the clip 2; the fulcrum 3 can stably transmit the anchoring force amplified by the anchoring force amplification unit to the clip 2, so as to further firmly clamp the anchor rod 1;

[0048] Specifically, Figure 1 and Figure 2 As shown, the force transmission unit is fixedly arranged at the bottom end of the clamping unit, and is used to transmit the pulling force of the static load test to the clamping unit and the anchoring force amplification unit, and comprises: a force transmission ring 4 and a base 5;

[0049] The force transmission ring 4 is a hollow ring as a whole, which is fixedly sleeved on the anchor rod 1 and fixedly arranged at the bottom end of the clip 2, and is used to prevent the base 5 from excessively moving upward, avoid damage to the anchor force amplification unit and the clip 2, and increase the service life of the anchor rod clamp. At the same time, the force transmission ring 4 transmits the upward thrust formed by the static load test pulling force and cooperates with the anti-slip stripes on the inner side of the clip 2 to further enhance the friction and gripping force between the clip 2 and the anchor rod 1;

[0050] The base 5 is fixedly sleeved on the anchor rod 1 and fixedly arranged at the bottom end of the force transmission ring 4, and is used to stably transmit the static load test pulling force to the anchoring force amplification unit, and includes: a base body 501, a groove 502 and a first fixed shaft 503;

[0051] The base body 501 is fixedly arranged at the bottom end of the force transmission ring 4, and is a concave block as a whole, and is used to bear the pulling force of the static load test;

[0052] The groove 502 is fixedly arranged at the middle upper end of the base 5 and is in a square shape as a whole, and is used to accommodate and limit the bottom end of the anchoring force amplification unit, thereby ensuring the stability of the anchor rod clamp structure and improving the safety of the clamping process;

[0053] The first fixed shaft 503 passes through both sides of the upper end of the base body 501 and is fixedly arranged inside the groove 502. At the same time, the first fixed shaft 503 can rotate inside the groove 502 through bearings matched with the first fixed shaft 503 fixedly arranged on both sides of the upper end of the base body 501, and is used to stably transmit the static load test pulling force to the anchoring force amplification unit;

[0054] Preferably, the inner diameter of the force transmission ring 4 is larger than the outer diameter of the anchor rod 1 and smaller than the sum of the thickness of the two clips 2 and the outer diameter of the anchor rod 1, so that during the static load test, the force transmission ring 4 is stably located at the bottom end of the clip 2. At the same time, the outer diameter of the force transmission ring 4 is smaller than the length of the axis spacing between the two first fixed axes 503, ensuring that the force transmission unit is in stable contact with the anchoring force amplification unit.

[0055] Specifically, Figure 1 , Figures 3 to 9 As shown, the anchoring force amplification unit is used to convert the static load test pulling force transmitted by the force transmission unit into a horizontal thrust on the anchor rod 1, thereby amplifying the anchoring force and further increasing the friction between the clip 2 and the anchor rod 1; the anchoring force amplification unit includes: a first tension ring 6, a first lever 7, a second tension ring 8, a second lever 9 and a latch 10;

[0056] The first tension ring 6 is fixedly sleeved on the outside of the clip 2 and located below the fulcrum 3. It is fixedly arranged on the left side of the clip 2 as a whole, and can increase the friction between the right side clip 2 and the anchor rod 1. It includes: a first side plate 601, a first tension frame 602, a first convex block 603 and a second convex block 604;

[0057] The first side plate 601 is fixedly disposed on the left side of the left clip 2 and is used to connect other components supporting the first tension ring 6;

[0058] A plurality of first protrusions 603 are fixedly disposed on the upper sides of both ends of the right side of the first side plate 601;

[0059] A plurality of the second protrusions 604 are fixedly disposed on the lower sides of both ends of the right side of the first side plate 601;

[0060] The first tension frame 602 is a U-shaped beam as a whole, the upper ends of the two end brackets are respectively fixedly connected to the bottom ends of the first protrusions 603, the bottom ends of the two end brackets are respectively fixedly connected to the upper ends of the second protrusions 604, and the right crossbeam is attached to the right clip 2;

[0061] Preferably, the first protrusion 603 cooperates with the second protrusion 604 to stably fix the first tension frame 602 on the right side of the first side plate 601, while avoiding damage during a static load test;

[0062] Preferably, the first tension ring 6 is used to support the first lever 7, limit the first lever 7 and increase the friction between the right clip 2 and the anchor rod 1;

[0063] The first lever 7 is fixedly disposed inside the first tension ring 6, and comprises: a first lever body 701 and a first movable shaft 702;

[0064] The first lever body 701 is vertically fixed inside the first tension ring 6, and is a folded plate with a certain angle in the middle, and an arc-shaped sliding groove is fixedly provided on the inner side of the middle;

[0065] The two ends of the first movable shaft 702 are respectively movably connected to the square through holes at the front and rear ends of the first tension ring 6 and are fixed inside the first tension ring 6; the first movable shaft 702 is a cylindrical body as a whole and is adapted to the inner arc-shaped sliding groove in the middle of the first lever body 701, and a third protrusion 702a is fixedly provided in the middle of the outer side thereof, and a plurality of fourth protrusions 702b are fixedly provided on the upper and lower sides of the third protrusion 702a;

[0066] Preferably, the third protrusion 702a is movably connected to the first side plate 601 and is an arc-shaped protrusion as a whole;

[0067] Preferably, a plurality of the fourth protrusions 702b fall into the arc-shaped sliding groove inside the middle of the first lever body 701 so that the first lever body 701 and the first movable shaft 702 are fixedly connected and do not slide relative to each other;

[0068] Preferably, the lower end of the first lever body 701 falls into the groove 502, and it can rotate clockwise around the first movable axis 702 as the center under the extrusion effect of the rising of the first fixed axis 503, so that its upper end squeezes the left fulcrum 3, further increasing the friction between the left clip 2 and the anchor rod 1. At the same time, under the extrusion effect of the rising of the first fixed axis 503, the first movable axis 702 moves away from the anchor rod 1, and the third protrusion 702a squeezes the first side plate 601, thereby prompting the first tension frame 602 to squeeze the right clip 2, further increasing the friction between the right clip 2 and the anchor rod 1.

[0069] The second tension ring 8 is fixedly sleeved on the outside of the clip 2 and located below the fulcrum 3. It is fixedly arranged on the right side of the clip 2 as a whole, and can increase the friction between the left clip 2 and the anchor rod 1. It includes: a second side plate 801, a second tension frame 802 and a third tension frame 803;

[0070] The second side plate 801 is fixedly disposed on the right side of the right clamping piece 2 and is used to connect and support other components of the second tension ring 8;

[0071] The second tension frame 802 is a U-shaped beam as a whole, and its two ends are respectively fixedly connected to the upper sides of the two ends of the left side of the second side plate 801, and the left crossbeam is in contact with the left clip 2; the second tension frame 802 is used to limit the second lever 9 and increase the friction between the left clip 2 and the anchor rod 1;

[0072] The third tension frame 803 is a U-shaped beam as a whole, and its two ends are respectively fixedly connected to the lower sides of the two ends of the left side of the second side plate 801, and the left crossbeam is in contact with the left clip 2; the third tension frame 803 is used to support the latch 10, limit the second lever 9 and increase the friction between the left clip 2 and the anchor rod 1;

[0073] Preferably, the vertical distance between the second tension frame 802 and the third tension frame 803 is adapted to the height of the first tension frame 602, so that the first tension ring 6 is inserted into the second tension ring 8 from the left side, thereby improving the stability of the anchoring force amplification unit;

[0074] The second lever 9 is fixedly disposed inside the second tension ring 8, and comprises: a second lever body 901 and a second movable shaft 902;

[0075] The second lever body 901 is vertically fixed inside the second tension ring 8, and is a folded plate with a certain angle in the middle, and an arc-shaped sliding groove is fixedly provided on the inner side of the middle;

[0076] The second movable shaft 902 is fixedly disposed at the upper ends of both ends of the third tension frame 803 and is movably connected to the third tension frame 803; the second movable shaft 902 is a cylindrical body as a whole and is adapted to the inner arc-shaped slide groove in the middle of the second lever body 901, and a fifth protrusion 902a is fixedly disposed in the middle of the outer side thereof, and a plurality of sixth protrusions 902b are fixedly disposed on the upper and lower sides of the fifth protrusion 902a;

[0077] Preferably, the fifth protrusion 902a is movably connected to the second side plate 801 and is an arc-shaped protrusion as a whole;

[0078] Preferably, a plurality of the sixth protrusions 902b fall into the arc-shaped sliding groove on the inner side of the middle portion of the second lever body 901 so that the second lever body 901 and the second movable shaft 902 are fixedly connected and do not slide relative to each other;

[0079] Preferably, the lower end of the second lever body 901 falls into the groove 502, and it can rotate counterclockwise around the second movable axis 902 as the center under the extrusion effect of the rising of the first fixed axis 503, so that its upper end squeezes the right fulcrum 3, further increasing the friction between the right clip 2 and the anchor rod 1. At the same time, under the extrusion effect of the rising of the first fixed axis 503, the second movable axis 902 moves away from the anchor rod 1, and the fifth protrusion 902a squeezes the second side plate 801, thereby prompting the second tension frame 802 and the second tension frame 803 to squeeze the left clip 2, further increasing the friction between the left clip 2 and the anchor rod 1.

[0080] The latch 10 is a square latch, which is fixed between the first tension ring 6 and the second lever 9 and fixed between the second tension frame 802 and the second tension frame 803, and is used to make the first tension ring 6 and the second tension ring 8 pre-extrude the clip 2, so as to conveniently realize that the anchoring force amplification unit is stably sleeved on the outside of the clip 2, and when the static load test pull-out force reaches a certain value, under the action of the first lever 7 and the second lever 9, the distance between the first tension frame 602 and the second lever 9 is increased, so as to facilitate the pull-out of the latch 10, and realize the convenient disassembly of the anchor clamp after completing the static load test;

[0081] Preferably, when the distance between the first tension frame 602 and the second lever 9 increases, the latch 10 may not be pulled out;

[0082] Preferably, an arc-shaped groove adapted to the outer side of the clip 2 is fixedly provided on the inner side of the middle part of the left crossbeam of the first tension frame 602, the right crossbeam of the second tension frame 802 and the right crossbeam of the third tension frame 803, so as to increase the contact area with the clip 2 and extend the service life of the tension frame;

[0083] In the static load test, additional anchoring force is applied on both sides of the clip through the tension ring and the lever, thereby improving the overall stability of the structure, helping to provide additional safety for the project, resisting displacement or loosening that may be caused by environmental changes, load fluctuations or unexpected impacts, and ensuring the long-term safety of the anchoring structure. In addition, this reinforcement measure can also reduce the need for maintenance and repair, extend the service life of the device, and reduce long-term operating costs.

[0084] like Figure 1 and Fig.10 As shown, another embodiment of the present invention provides a method for using an anchor rod clamp for amplifying anchoring force, comprising the following steps:

[0085] S1: Check whether the anchor rod clamp is intact; clean the clamping area of ​​the anchor rod 1;

[0086] S2: sequentially sleeve the base 5 and the force transmission ring 4 on the clamping area of ​​the anchor rod 1, and make the base 5 stably contact with the pulling force generating device;

[0087] S3: inserting the first lever 7 into the first tension ring 6, inserting the second lever 9 into the second tension ring 8, then inserting the first tension ring 6 into the second tension ring 8 from the left side, and sleeve the first tension ring 6 and the second tension ring 8 on the clamping area;

[0088] S4: Place the two clips 2 opposite to each other and move them downward along the anchor rod 1 until the bottom end of the clip 2 passes through the first tension ring 6 and the second tension ring 8 and contacts the upper end of the force transmission ring 4, and insert the latch 10 between the first tension ring 6 and the second lever 9, so that the anchoring force amplification unit pre-clamps the clip 2;

[0089] S5: after repeating steps S1 to S4 to complete the installation of the anchor rod clamps on all the anchor rods 1, start the static load test device to perform a static load test;

[0090] S6: After the static load test is completed, the latch 10 is pulled out and the anchor clamp is disassembled in an orderly manner.

[0091] Preferably, the anchor clamp is suitable for static load testing of pile foundations including steel strands.

[0092] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0093] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0094] In this patent, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art will readily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An anchor clamp for amplifying anchoring force, characterized in that: include: Clamping unit, force transmission unit and anchoring force amplification unit, wherein: The clamping unit is used to directly clamp the anchor rod (1), and comprises a clamping piece (2) and a fulcrum (3); a plurality of the clamping pieces (2) are fixedly arranged on both sides of the anchor rod (1); the fulcrum (3) is fixedly arranged at the middle part of the outer side of the clamping piece (2); The force transmission unit is used to transmit the static load test pulling force to the clamping unit and the anchoring force amplification unit, and comprises a force transmission ring (4) and a base (5); the force transmission ring (4) is fixedly sleeved on the anchor rod (1) and fixedly arranged at the bottom end of the clamping piece (2); the base (5) is fixedly sleeved on the anchor rod (1) and fixedly arranged at the bottom end of the force transmission ring (4); The base (5) comprises: a base body (501), a groove (502) and a first fixed shaft (503); the base body (501) is fixedly arranged at the bottom end of the force transmission ring (4); the groove (502) is fixedly arranged at the middle upper end of the base (5); a plurality of the first fixed shafts (503) pass through both sides of the upper end of the base body (501) and are fixedly arranged inside the groove (502); The anchoring force amplification unit is used to convert the static load test pulling force transmitted by the force transmission unit into a horizontal thrust on the anchor rod (1), and comprises: a first tension ring (6), a first lever (7), a second tension ring (8), a second lever (9) and a latch (10); The first tension ring (6) comprises: a first side plate (601), a first tension frame (602), a first protrusion (603) and a second protrusion (604); the first side plate (601) is fixedly arranged on the left side of the left clip (2); the first protrusion (603) is fixedly arranged on the upper sides of the two ends of the right side of the first side plate (601); the second protrusion (604) is fixedly arranged on the lower sides of the two ends of the right side of the first side plate (601); the upper ends of the brackets at both ends of the first tension frame (602) are respectively fixedly connected to the bottom ends of the first protrusion (603), and the bottom ends of the brackets at both ends are respectively fixedly connected to the upper ends of the second protrusion (604), and the right crossbeam fits the right clip (2); The first lever (7) comprises a first lever body (701) and a first movable shaft (702); the first lever body (701) is vertically fixed inside the first tension ring (6) and an arc-shaped sliding groove is fixedly provided on the inner side of the middle part thereof; the two ends of the first movable shaft (702) are respectively movably connected to the square through holes at the front end and the rear end of the first tension ring (6) and are fixedly provided inside the first tension ring (6), and are adapted to the arc-shaped sliding groove on the inner side of the middle part of the first lever body (701); a third protrusion (702a) is fixedly provided on the middle part of the outer side of the first movable shaft (702) and a plurality of fourth protrusions (702b) are fixedly provided on the upper and lower sides of the third protrusion (702a); The second tension ring (8) comprises: a second side plate (801), a second tension frame (802) and a third tension frame (803); the second side plate (801) is fixedly arranged on the right side of the right clamp (2); two ends of the second tension frame (802) are respectively fixedly connected to the upper sides of the left ends of the second side plate (801), and the left crossbeam fits the left clamp (2); two ends of the third tension frame (803) are respectively fixedly connected to the lower sides of the left ends of the second side plate (801), and the left crossbeam fits the left clamp (2); The second lever (9) comprises: a second lever body (901) and a second movable shaft (902); the second lever body (901) is vertically fixed inside the second tension ring (8) and an arc-shaped sliding groove is fixedly provided on the inner side of the middle part thereof; the second movable shaft (902) is fixedly provided at the upper ends of both ends of the third tension frame (803) and is movably connected to the third tension frame (803), and is adapted to the arc-shaped sliding groove on the inner side of the middle part of the second lever body (901); a fifth protrusion (902a) is fixedly provided on the middle part of the outer side of the second movable shaft (902) and a plurality of sixth protrusions (902b) are fixedly provided on the upper and lower sides of the fifth protrusion (902a); The first tension ring (6) and the second tension ring (8) are both fixedly sleeved on the outside of the clamp (2) and located below the fulcrum (3), and the first tension ring (6) is inserted into the second tension ring (8) from the left; the first lever (7) is fixedly arranged inside the first tension ring (6); the second lever (9) is fixedly arranged inside the second tension ring (8); the lower ends of the first lever (7) and the second lever (9) both fall into the groove (502), and the first lever (7) is rollingly connected to the first fixed shaft (503) on the left, and the second lever (9) is rollingly connected to the first fixed shaft (503) on the right; the latch (10) is fixedly arranged between the first tension ring (6) and the second lever (9), so as to conveniently realize the stable sleeve of the anchoring force amplification unit on the outside of the clamp (2), and realize the convenient disassembly of the anchor rod clamp after completing the static load test.

2. The anchor clamp according to claim 1, characterized in that: The inner diameter of the force transmission ring (4) is greater than the outer diameter of the anchor rod (1) and less than the sum of the thickness of the two clips (2) and the outer diameter of the anchor rod (1); the outer diameter of the force transmission ring (4) is less than the length of the axis distance between the two first fixed axes (503).

3. The anchor clamp according to claim 1, characterized in that: The vertical distance between the second tension frame (802) and the third tension frame (803) is adapted to the height of the first tension frame (602).

4. A method for using an anchor rod clamp to amplify anchoring force, which is implemented by using the anchor rod clamp as claimed in any one of claims 1 to 3, characterized in that: The steps include: S1: Check whether the anchor rod clamp is intact; clean the anchor rod (1) clamping area; S2: sequentially sleeve the base (5) and the force transmission ring (4) on the clamping area of ​​the anchor rod (1), and ensure that the base (5) is in stable contact with the pulling force generating device; S3: inserting the first lever (7) into the first tension ring (6), inserting the second lever (9) into the second tension ring (8), then inserting the first tension ring (6) into the second tension ring (8) from the left side, and sleeve-mounting the first tension ring (6) and the second tension ring (8) in the clamping area; S4: The two clips (2) are placed opposite to each other and moved downward along the anchor rod (1) until the bottom end of the clip (2) passes through the first tension ring (6) and the second tension ring (8) and contacts the upper end of the force transmission ring (4), and the latch (10) is inserted between the first tension ring (6) and the second lever (9) so that the anchoring force amplification unit pre-clamps the clip (2); S5: after repeating steps S1 to S4 to complete the installation of the anchor rod clamps on all the anchor rods (1), start the static load test device to perform a static load test; S6: After the static load test is completed, the latch (10) is pulled out and the anchor clamp is disassembled in an orderly manner.

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