A rock mass strength in-situ test anchor pile counterforce device convenient to expand and set up

Abstract

The application provides a rock mass strength in-situ test anchor pile counterforce device convenient to expand and support, and belongs to the technical field of rock mass strength test equipment. The rock mass strength in-situ test anchor pile counterforce device convenient to expand and support comprises a main beam, two auxiliary beams movably connected to the upper parts of the two ends of the main beam, and an anchor pile mechanism arranged on the auxiliary beams. The device can conveniently expand the beam body structure to adapt to different loads, thereby adapting to the in-situ test requirements of different rock mass strengths in the construction process, does not need to be special and dedicated, greatly reduces the construction cost, improves the test efficiency, and promotes the completion of the project with high quality and high efficiency.

Description

Technical Field

[0001] This application relates to the technical field of rock mass strength testing equipment, and more specifically, to a rock mass strength in-situ testing anchor pile reaction device that is easy to expand and support. Background Technology

[0002] In-situ rock mass strength testing anchor pile reaction devices are important experimental facilities for obtaining the shear strength parameters of corresponding rock masses. Among them, anchor pile type in-situ testing reaction devices are commonly used, especially the planar arrangement bearing plate type. The beams of common planar arrangement bearing plate type in-situ testing anchor pile reaction devices are generally welded from steel sections and steel plates of a certain specification. After hoisting and anchoring, force is applied through telescopic drive components (usually hydraulic jacks) to obtain the reaction force, which is then applied to the rock mass sample to complete the in-situ rock mass strength test. Unless remanufactured, it is generally difficult to change the structure and load-bearing capacity of the reaction device beam.

[0003] However, due to the varying locations and types of rock masses used in in-situ testing, the compressive strength of the rock mass also differs. Therefore, different magnitudes of force are often required when conducting in-situ reaction force tests on rock mass strength. Traditionally, for in-situ testing of rock masses with different strengths, beams with varying bearing capacities need to be fabricated specifically for a particular point or area of ​​rock mass. This not only increases investment and management costs and time but also adds to the construction difficulty of in-situ rock mass strength testing, severely reducing project efficiency and schedule. Therefore, there is an urgent need to develop an easily expandable and variable-load-bearing anchor pile reaction force device for in-situ rock mass strength testing. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a rock mass strength in-situ testing anchor pile reaction device that is easy to expand and install. This device can conveniently expand the beam structure to accommodate different loads, thereby meeting the in-situ testing needs of different rock mass strengths during construction. It eliminates the need for dedicated testing sites, greatly reducing construction costs, improving testing efficiency, and promoting the high-quality and efficient completion of projects.

[0005] This application is implemented as follows:

[0006] This application provides a rock mass strength in-situ testing anchor pile reaction device that is easy to expand and support, including...

[0007] Main beam;

[0008] The two secondary beams are respectively movably connected above both ends of the main beam;

[0009] Anchor pile mechanism is installed on the sub-beam.

[0010] In one embodiment of this application, the main beam includes a main support beam, a connecting assembly, a main extension beam, and a main fastening assembly. Two main support beams and one or more main extension beams are arranged in parallel and spaced apart. The main extension beam is disposed between two main support beams. The two main support beams are movably connected by a plurality of pairs of connecting assemblies correspondingly disposed on their upper and lower sides. The main fastening assembly is disposed on the connecting assembly and passes through the connecting assembly and the main extension beam, fixing the main extension beam between the connecting assemblies. A first connecting block is disposed in the middle of the upper side of the main support beam, and two first locking blocks are symmetrically disposed in the middle of the lower side of the main support beam.

[0011] In one embodiment of this application, the connecting assembly includes a first connecting plate and a second connecting plate. One end of the first connecting plate and one end of the second connecting plate are respectively fixedly connected to two main support beams. The other end of the second connecting plate slides through the other end of the first connecting plate. The first connecting plate has two first limiting grooves symmetrically opened on its inner side and two second limiting grooves symmetrically opened on its two sides. The second connecting plate has two first protrusions symmetrically arranged on its inner side, and the first protrusions pass through the first limiting grooves. The other end of the second connecting plate has two first wing plates symmetrically arranged on its two sides, and the first wing plates pass through the second limiting grooves.

[0012] In one embodiment of this application, the upper and lower middle parts of the main extension beam are respectively provided with first grooves.

[0013] In one embodiment of this application, the main fastening assembly includes a first pin, a first handle, and a first nut. A plurality of first pins are arranged side by side at even intervals below the first handle. The first pins pass through the middle of the first connecting plate, the middle of the second connecting plate, and both sides of the main extension beam, and are fixed to the first connecting plate, the second connecting plate, and the main extension beam by the first nut located at their lower ends. A first abutment is provided on the lower side of one end of the first handle, and the first abutment abuts against the upper side of one of the second connecting plates.

[0014] In one embodiment of this application, the secondary beam includes a secondary support beam, a splicing assembly, a secondary extension beam, and a secondary fastening assembly. Two secondary support beams and one or more secondary extension beams are arranged in parallel with spacing between them. The secondary extension beams are disposed between two secondary support beams. The two secondary support beams are movably connected by a plurality of pairs of splicing assemblies disposed on their upper and lower sides. The secondary fastening assembly is disposed on the splicing assembly and passes through the splicing assembly and the secondary extension beam, fixing the secondary extension beam between the splicing assemblies. A second connecting block is disposed in the middle of the upper side of the secondary support beam, and two second locking blocks are symmetrically disposed in the middle of the lower side of the secondary support beam.

[0015] In one embodiment of this application, the splicing assembly includes a third connecting plate and a fourth connecting plate. One end of the third connecting plate and one end of the fourth connecting plate are respectively fixedly connected to two auxiliary support beams. The other end of the fourth connecting plate slides through the other end of the third connecting plate. The third connecting plate has two symmetrically arranged third limiting grooves on its inner side and four symmetrically arranged fourth limiting grooves on its two sides. The fourth connecting plate has two symmetrically arranged second protrusions on its inner side, which correspondingly pass through the third limiting grooves. The other end of the fourth connecting plate has two symmetrically arranged second wing plates on its two sides, which correspondingly pass through the fourth limiting grooves.

[0016] In one embodiment of this application, the upper and lower middle parts of the secondary extension beam are respectively provided with second grooves.

[0017] In one embodiment of this application, the secondary fastening assembly includes a second pin, a second handle, and a second nut. A plurality of second pins are arranged side by side at even intervals below the second handle. The second pins pass through the middle of the third connecting plate, the middle of the fourth connecting plate, and both sides of the secondary extension beam, and are fixed to the third connecting plate, the fourth connecting plate, and the secondary extension beam by means of the second nut located at their lower ends. A second abutment is provided on the lower side of one end of the second handle, and the second abutment abuts against the upper side of one of the fourth connecting plates.

[0018] In one embodiment of this application, the anchor pile mechanism includes a pad, an anchor rod, and an anchor plate. A plurality of the pads are disposed between a plurality of the splicing components, and the upper end of the anchor rod passes through the space between the secondary extension beams and is anchored to the pad through the anchor plate.

[0019] In one embodiment of this application, the in-situ rock mass strength testing anchor pile reaction device, which is easy to expand and support, further includes...

[0020] The first adjustment and limiting mechanism is installed on the main beam;

[0021] The second adjustment and limiting mechanism is provided on the sub-beam, and the two sub-beams are respectively movably connected to the upper ends of the main beam through the second adjustment and limiting mechanism.

[0022] In one embodiment of this application, the first adjustment and limiting mechanism includes a first housing, a first connecting member, a first double-ended lead screw, and a first limiting block. The main support beam and the main extension beam pass through the interior of the first housing. The first connecting member is fixedly connected to the upper middle part of the interior of the first housing. The first double-ended lead screw rotatably passes through both ends of the upper middle part of the first housing and the middle part of the first connecting member. The two main support beams are connected to the upper interior of the first housing via the first double-ended lead screw. A plurality of first limiting blocks are evenly arranged in the middle of the inner side of the first connecting plate and correspond to the first groove.

[0023] In one embodiment of this application, two sets of fifth limiting grooves are symmetrically opened on the bottom side inside the first housing, and the first locking block is disposed in the fifth limiting groove; the threads at both ends of the first double-ended lead screw are arranged in opposite directions and their ends are respectively threaded through the two first connecting blocks; a first handwheel is provided at both ends of the first double-ended lead screw.

[0024] In one embodiment of this application, the second adjustment and limiting mechanism includes a second housing, a second connecting member, a second double-ended lead screw, and a second limiting block. The secondary support beam and the secondary extension beam pass through the interior of the second housing. The second connecting member is fixedly connected to the upper middle part of the interior of the second housing. The second double-ended lead screw rotatably passes through both ends of the upper middle part of the second housing and the middle part of the second connecting member. The two secondary support beams are connected to the upper interior of the second housing via the second double-ended lead screw. A plurality of second limiting blocks are evenly arranged in the middle of the inner side of the third connecting plate and are correspondingly arranged with the second groove.

[0025] In one embodiment of this application, two sets of sixth limiting grooves are symmetrically opened on the bottom side inside the second housing, and the second locking block is disposed in the sixth limiting groove; the threads at both ends of the second double-ended lead screw are arranged in opposite directions and their ends are respectively threaded through the two second connecting blocks; a second handwheel is provided at both ends of the second double-ended lead screw; two sets of seventh limiting grooves are symmetrically opened on the bottom side outside the second housing, and a third locking block is slidably disposed inside the seventh limiting groove, and the third locking block is connected to the middle of the bottom side outside the second housing by a spring.

[0026] The beneficial effects of this application are as follows: This application provides an in-situ rock mass strength testing anchor pile reaction device that is easy to expand and support. When in use, after preparing a test site at a suitable location in the rock mass to be tested, two rows of anchor holes are drilled on the base of the test site on both sides. Two temporary support piers are installed within the area of ​​the two rows of anchor holes. Then, the anchor pile mechanism is set in the anchor holes and cement mortar is poured in. After the cement mortar dries completely, the surface of the test rock mass is cleaned, a layer of cement slurry is laid, and then a rigid bearing plate is placed on top. The bearing plate is then lightly tapped to squeeze out excess cement slurry, making the bearing plate parallel to the test surface. A jack should then be placed on the bearing plate, with the center of pressure of the jack coinciding with the center of the bearing plate. Finally, an integral I-shaped structure consisting of a main beam and two secondary beams is used. The main beam is hoisted and erected on two temporary support piers, with the center of the top of the jacks aligned with the middle of the main beam. The upper end of the anchor pile mechanism is anchored to the secondary beam. Finally, other related system equipment is installed. The main beam and secondary beam can be pre-installed before erection or adjusted and expanded after erection to adapt to the testing bearing capacity requirements of different rock masses. After the arrangement is completed, in-situ rock mass strength reaction force testing can begin. This allows the main beam and secondary beam to be combined into a whole, which is more convenient for hoisting and arrangement than traditional methods. The bearing capacity of the main beam and secondary beam can be expanded and changed according to different rock mass strength testing needs. The main beam and secondary beam structure can be reused, eliminating the need to repeatedly manufacture anchor pile reaction force device beams with different indicators, reducing construction costs and difficulty, and improving project efficiency and progress. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of an in-situ rock mass strength testing anchor pile reaction device that is easy to expand and support, provided by an embodiment of this application.

[0029] Figure 2 A schematic diagram of the main beam structure provided for an embodiment of this application;

[0030] Figure 3 A schematic diagram of the main support beam, connecting components, main extension beam, main fastening components, and first box structure provided for embodiments of this application;

[0031] Figure 4 A schematic diagram of the main support beam structure provided for an embodiment of this application;

[0032] Figure 5A schematic diagram of the main extension beam structure provided for an embodiment of this application;

[0033] Figure 6 Schematic diagram of the connecting component and main fastening component provided for embodiments of this application;

[0034] Figure 7 A schematic diagram of the structure of the first connecting plate, the second connecting plate, the first pin, the first handle, the first stop block, and the first nut provided for the embodiments of this application;

[0035] Figure 8 Exploded view of the connecting assembly and main fastening assembly provided in the embodiments of this application;

[0036] Figure 9 A schematic diagram of the first adjustment and limiting mechanism provided for the embodiments of this application;

[0037] Figure 10 A schematic diagram of the structure of the first housing, the fifth limiting groove, the first connecting member, the first double-ended lead screw, and the first handwheel provided for the embodiments of this application;

[0038] Figure 11 A schematic diagram of the sub-beam structure provided for the embodiments of this application;

[0039] Figure 12 A schematic diagram of the sub-beam and the second adjustment and limiting mechanism provided for the embodiments of this application;

[0040] Figure 13 A schematic diagram of the secondary support beam structure provided for an embodiment of this application;

[0041] Figure 14 A schematic diagram of the secondary extension beam structure provided for an embodiment of this application;

[0042] Figure 15 A schematic diagram of the splicing assembly and secondary fastening assembly provided for embodiments of this application;

[0043] Figure 16 A three-dimensional structural diagram of the third connecting plate, fourth connecting plate, secondary extension beam, second pin, second handle, and second nut provided for the embodiments of this application;

[0044] Figure 17 Exploded view of the splicing assembly and secondary fastening assembly provided for embodiments of this application;

[0045] Figure 18 A schematic diagram of the anchor pile mechanism provided for the embodiments of this application;

[0046] Figure 19 A schematic diagram of the second adjustment and limiting mechanism provided for the embodiments of this application;

[0047] Figure 20 A schematic diagram of the structure of the second housing, the sixth limiting groove, the seventh limiting groove, the second connecting member, the second double-ended lead screw, the second handwheel, the third locking block, and the spring provided for the embodiments of this application.

[0048] In the diagram: 10. Main beam; 11. Main support beam; 111. First connecting block; 112. First locking block; 12. Connecting assembly; 121. First connecting plate; 1211. First limiting groove; 1212. Second limiting groove; 122. Second connecting plate; 1221. First protruding strip; 1222. First wing plate; 13. Main extension beam; 131. First groove; 14. Main fastening assembly; 141. First pin; 142. First handle; 1421. First abutment; 143. First nut; 20. Sub-beam; 21. Sub-support beam; 211. Second connecting block; 212. Second locking block; 22. Splicing assembly; 221. Third connecting plate; 2211. Third limiting groove; 2212. Fourth limiting groove; 222. Fourth connecting plate; 2221. Second protruding strip 2222, Second wing plate; 23, Secondary extension beam; 231, Secondary groove; 24, Secondary fastening assembly; 241, Secondary pin; 242, Secondary handle; 2421, Secondary abutment block; 243, Secondary nut; 30, Anchor pile mechanism; 31, Pad plate; 32, Anchor rod; 33, Anchor plate; 40, First adjustment and limiting mechanism; 41, First housing; 411, Fifth limiting groove; 42, First connecting piece; 43, First double-ended lead screw; 431, First handwheel; 44, First limiting block; 50, Second adjustment and limiting mechanism; 51, Second housing; 511, Sixth limiting groove; 512, Seventh limiting groove; 52, Second connecting piece; 53, Second double-ended lead screw; 531, Secondary handwheel; 54, Third locking block; 55, Spring; 56, Second limiting block. Detailed Implementation

[0049] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] Example

[0052] like Figure 1As shown, an in-situ rock mass strength testing anchor pile reaction device according to an embodiment of this application, which is easy to expand and support, includes a main beam 10, a secondary beam 20, an anchor pile mechanism 30, a first adjustment and limiting mechanism 40, and a second adjustment and limiting mechanism 50. The two secondary beams 20 are respectively movably connected to the upper ends of the main beam 10, forming an integral I-shaped structure for easy one-time hoisting and arrangement, unlike the traditional method of sequentially hoisting and arranging the main beam 10 and secondary beam 20 for combined debugging. The assembly-type setting method adopted in this application is more efficient, accurate, and convenient to operate. The anchor pile mechanism 30 is set on the secondary beam 20 to provide support to the secondary beam 20. The tension is provided so that when the telescopic drive pushes the main beam 10, the bottom of the main beam 10 can obtain the reaction force applied to the sample to complete the in-situ test of rock mass strength; the first adjustment and limiting mechanism 40 is set on the main beam 10 so as to symmetrically adjust the distance between the two main support beams 11 and limit the extension of the main extension beam 13; the two secondary beams 20 are respectively movably connected to the upper ends of the main beam 10 through the second adjustment and limiting mechanism 50, which can not only realize the symmetrical adjustment of the distance between the two secondary support beams 21, but also limit the extension of the secondary extension beam 23, and realize the movable connection between the secondary beams 20 and the upper end of the main beam 10.

[0053] According to some embodiments of this application, such as Figures 2-8As shown, the main beam 10 includes a main support beam 11, a connecting assembly 12, a main extension beam 13, and a main fastening assembly 14. Two main support beams 11 and one or more main extension beams 13 are arranged in parallel and spaced apart. The main extension beams 13 are located between the two main support beams 11. The two main support beams 11 are movably connected by several pairs of connecting assemblies 12 arranged on their upper and lower sides. The main fastening assembly 14 is arranged on the connecting assembly 12, passes through the connecting assembly 12 and the main extension beam 13, and fixes the main extension beam 13 between the connecting assembly 12. Reinforcing ribs or reinforcing plates can be provided on both sides of the main support beam 11 as needed. The connecting assembly 12 includes a first connecting plate 121 and a second connecting plate 122. One end of the first connecting plate 121 and one end of the second connecting plate 122 are respectively fixedly connected to the two main support beams 11. The other end of the second connecting plate 122 slides through the other end of the first connecting plate 121. The main fastening assembly 14 includes a first pin 141, a first handle 142, and a first fastening assembly 143. A nut 143 and several first pins 141 are arranged side by side at even intervals on the lower side of the first handle 142. The first pins 141 pass through the middle of the first connecting plate 121, the middle of the second connecting plate 122, and both sides of the main extension beam 13. The first connecting plate 121, the second connecting plate 122, and the main extension beam 13 are fixed by the first nut 143 at their lower ends. The number of first pins 141 and the length of the first handle 142 are set according to actual needs. The first connecting plate 121 and the second connecting plate 122 can cooperate to realize the symmetrical adjustment of the spacing between the two main support beams 11. A certain number of main extension beams 13 are inserted as needed. Then, the first handle 142 is held and the first pins 141 are inserted into the middle of the first connecting plate 121, the middle of the second connecting plate 122, and both sides of the main extension beam 13. Then, the first nut 143 is used from the lower end to fix the first connecting plate 121, the second connecting plate 122, and the main extension beam 13. Thus, a stable integrated structure of the expandable main beam 10 can be realized.

[0054] The first connecting plate 121 has two symmetrically arranged first limiting grooves 1211 on its inner side and two symmetrically arranged second limiting grooves 1212 on its two sides. The second connecting plate 122 has two symmetrically arranged first protrusions 1221 on its inner side, and the first protrusions 1221 pass through the first limiting grooves 1211. The other end of the second connecting plate 122 has two symmetrically arranged first wing plates 1222 on its two sides, and the first wing plates 1222 pass through the second limiting grooves 1212. The first protrusions 1221, together with the first limiting grooves 1211, and the first wing plates 1222, together with the second limiting grooves 1212, can ensure the accuracy and strength of the movable structure composed of the first connecting plate 121 and the second connecting plate 122 when the spacing of the main support beam 11 changes. The first protrusions 1221 are flush with the inner side of the first connecting plate 121 to ensure the stability of the inserted main extension beam 13. A first abutment 1421 is provided on the lower side of one end of the first handle 142. The first abutment 1421 abuts against the upper side of a second connecting plate 122. The function of the first abutment 1421 is to ensure the stability and strength of the movable structure composed of the first connecting plate 121 and the second connecting plate 122 after it is fixed. This prevents the first pin 141, which only passes through two second connecting plates 122 in the same group, from generating unbalanced stress on the first connecting plate 121 and the second connecting plate 122 above due to the tightening effect of the first nut 143, which would affect the stability of the structure.

[0055] According to some embodiments of this application, such as Figures 11-17As shown, the secondary beam 20 includes a secondary support beam 21, a splicing assembly 22, a secondary extension beam 23, and a secondary fastening assembly 24. Two secondary support beams 21 and one or more secondary extension beams 23 are arranged in parallel and spaced apart. The secondary extension beams 23 are located between two secondary support beams 21. The two secondary support beams 21 are movably connected by several pairs of splicing assemblies 22 correspondingly arranged on their upper and lower sides. The secondary fastening assembly 24 is arranged on the splicing assembly 22, and the secondary fastening assembly 24 passes through the splicing assembly 22 and the secondary extension beams 23, fixing the secondary extension beams 23 between the splicing assemblies 22. The splicing assembly 22 includes a third connecting plate 221 and a fourth connecting plate 222. One end of the third connecting plate 221 and one end of the fourth connecting plate 222 are respectively fixedly connected to the two secondary support beams 21, and the other end of the fourth connecting plate 222 slides through the other end of the third connecting plate 221. The secondary fastening assembly 24 includes a second pin 241, a second handle 242, and a second nut 243, and several second pins 241, 242, 243, 244, 244, 245, 246, 247, 248, 249, 240, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249 ... The pins 241 are evenly spaced side by side on the underside of the second handle 242. The second pins 241 pass through the middle of the third connecting plate 221, the middle of the fourth connecting plate 222, and both sides of the secondary extension beam 23. The third connecting plate 221, the fourth connecting plate 222, and the secondary extension beam 23 are fixed by the second nut 243 at their lower ends. The number of second pins 241 and the length of the second handle 242 are set according to actual needs. The third connecting plate 221 and the fourth connecting plate 222 can cooperate to achieve symmetrical adjustment of the spacing between the two secondary support beams 21. A certain number of secondary extension beams 23 are inserted as needed. Then, the second handle 242 is held and the second pins 241 are inserted into the middle of the third connecting plate 221, the middle of the fourth connecting plate 222, and both sides of the secondary extension beam 23. Then, the second nut 243 is used from the lower end to fix the third connecting plate 221, the fourth connecting plate 222, and the secondary extension beam 23. Thus, a stable integrated structure of the expandable secondary beam 20 can be achieved.

[0056] The third connecting plate 221 has two symmetrically arranged third limiting grooves 2211 on its inner side and four symmetrically arranged fourth limiting grooves 2212 on its two sides. The fourth connecting plate 222 has two symmetrically arranged second protrusions 2221 on its inner side, which pass through the third limiting grooves 2211. The other end of the fourth connecting plate 222 has two symmetrically arranged second wing plates 2222 on its two sides, which pass through the fourth limiting grooves 2212. The second protrusions 2221, in conjunction with the third limiting grooves 2211 and the second wing plates 2222, in conjunction with the fourth limiting grooves 2212, can ensure the accuracy and strength of the movable structure composed of the third connecting plate 221 and the fourth connecting plate 222 when the spacing of the secondary support beams 21 changes. The second protrusions 2221 are flush with the inner side of the third connecting plate 221 to ensure the stability of the inserted secondary extension beams 23. A second abutment 2421 is provided on the lower side of one end of the second handle 242. The second abutment 2421 abuts against the upper side of a fourth connecting plate 222. The function of the second abutment 2421 is to ensure the stability and strength of the movable structure composed of the fixed third connecting plate 221 and fourth connecting plate 222, and to prevent the second pin 241, which only passes through two fourth connecting plates 222 in the same group, from generating unbalanced stress on the upper group of third connecting plates 221 and fourth connecting plates 222 due to the tightening effect of the second nut 243, thus affecting the stability of the structure.

[0057] According to some embodiments of this application, such as Figure 1 and Figure 18 As shown, the anchor pile mechanism 30 includes a pad plate 31, an anchor rod 32, and an anchor plate 33. Several pad plates 31 are arranged between several splicing components 22. The upper end of the anchor rod 32 passes through the secondary extension beams 23 and is anchored to the pad plate 31 through the anchor plate 33, thereby pulling the secondary beam 20. When the telescopic drive component is generally a jack that pushes the main beam 10, its bottom can obtain the reaction force applied to the sample to complete the in-situ test of rock mass strength.

[0058] According to some embodiments of this application, such as Figures 4-10As shown, the expansion and adjustment of the main beam 10 and the secondary beam 20 are directly related to the changes and adaptability of the load-bearing capacity of the reaction device. The main beam 10 and the secondary beam 20 have large self-weights and need to be arranged by hoisting. If the expansion function cannot be realized quickly, conveniently and accurately, it will still be difficult to improve the efficiency of in-situ rock mass strength testing and reduce testing costs. The first adjustment and limiting mechanism 40 is mounted on the main beam 10. The first adjustment and limiting mechanism 40 includes a first housing 41, a first connecting member 42, a first double-ended lead screw 43, and a first limiting block 44. The main support beam 11 and the main extension beam 13 pass through the interior of the first housing 41. The first connecting member 42 is fixedly connected to the upper middle part of the interior of the first housing 41. The first double-ended lead screw 43 rotatably passes through both ends of the upper middle part of the first housing 41 and the middle part of the first connecting member 42. The two main support beams 11 are connected to the upper part of the interior of the first housing 41 via the first double-ended lead screw 43. The upper and lower middle parts of the main extension beam 13 are symmetrically provided with first grooves 131. Several first limiting blocks 44 are evenly arranged in the middle of the inner side of the first connecting plate 121 and correspond to the first grooves 131. A first connecting block 111 is provided in the middle of the upper side of the main support beam 11, and two first locking blocks 112 are symmetrically arranged in the middle of the lower side of the main support beam 11. The first housing 41... Two sets of fifth limiting grooves 411 are symmetrically opened on the inner bottom side, and the first locking block 112 is set in the fifth limiting groove 411; the threads at both ends of the first double-ended screw 43 are arranged oppositely and their ends are respectively threaded through the two first connecting blocks 111; the first double-ended screw 43 is provided with a first handwheel 431 at both ends of the outside; by rotating the first double-ended screw 43 through the first handwheel 431, the distance between the two main support beams 11 can be symmetrically adjusted through the two first connecting blocks 111. When the main support beam 11 moves, the first locking block 112 can provide a limit, which is simple to operate and has high precision; the first limiting block 44, together with the first groove 131, can provide a limit for the main extension beam 13 inserted between the two main support beams 11, so that the loading of the main extension beam 13 is extremely convenient and efficient, and has high precision, ensuring the convenience and high precision of the main beam 10 and the expandability of the main beam 10, so as to realize different bearing capacities of the main beam 10 to meet the needs of the in-situ test anchor pile reaction device for different rock mass strengths.The second adjustment and limiting mechanism 50 includes a second housing 51, a second connecting member 52, a second double-ended lead screw 53, and a second limiting block 56. A secondary support beam 21 and a secondary extension beam 23 pass through the interior of the second housing 51. The second connecting member 52 is fixedly connected to the upper middle part of the interior of the second housing 51. The second double-ended lead screw 53 rotatably passes through both ends of the upper middle part of the second housing 51 and the middle part of the second connecting member 52. The two secondary support beams 21 are connected to the upper side of the interior of the second housing 51 via the second double-ended lead screw 53. Second grooves 231 are symmetrically provided on the upper and lower middle parts of the secondary extension beam 23. Several second limiting blocks 56 are evenly arranged in the middle of the inner side of the third connecting plate 221 and correspond to the second grooves 231. A second connecting block 211 is provided on the upper middle part of the secondary support beam 21, and two second locking blocks 212 are symmetrically provided on the lower middle part of the secondary support beam 21. Symmetrical openings are provided on the bottom side of the interior of the second housing 51. There are two sets of sixth limiting grooves 511, and the second locking block 212 is set in the sixth limiting groove 511; the threads at both ends of the second double-ended screw 53 are arranged oppositely and their ends are respectively threaded through the two second connecting blocks 211; the second double-ended screw 53 is provided with a second handwheel 531 at both ends of the exterior; by rotating the second double-ended screw 53 through the second handwheel 531, the distance between the two auxiliary support beams 21 can be symmetrically adjusted through the two second connecting blocks 211. When the auxiliary support beam 21 moves, the second locking block 212 can provide a limit, which is also simple to operate and highly accurate; the second limiting block 56, together with the second groove 231, can provide a limit for the auxiliary extension beam 23 inserted between the two auxiliary support beams 21, so that the loading of the auxiliary extension beam 23 is extremely convenient and efficient, ensuring the convenience and high-precision expandability of the auxiliary beam 20, and realizing different load-bearing capacities of the auxiliary beam 20 to meet the needs of the anchor pile reaction device for in-situ testing of different rock mass strengths. Two sets of seventh limiting grooves 512 are symmetrically opened on the bottom side of the second box 51. A third locking block 54 is slidably arranged inside the seventh limiting groove 512. The third locking block 54 is connected to the middle of the bottom side of the second box 51 by a spring 55. The second box 51 and the sub-beam 20 can be movably locked above the end of the main beam 10 by the third locking block 54 and the spring 55. The integrated I-shaped reaction system can be hoisted as a whole, which greatly improves the support efficiency and accuracy of the entire reaction device.

[0059] Specifically, the working principle of this in-situ rock mass strength testing anchor pile reaction device, which is easy to expand and support, is as follows: After preparing a test site at a suitable location in the rock mass to be tested, two rows of anchor holes are drilled on the base of the test site on both sides. Two temporary support piers are installed within the area of ​​the two rows of anchor holes. Then, anchor rods 32 are placed in the anchor holes and cement mortar is poured in. After the cement mortar dries completely, the surface of the test rock mass is cleaned, a layer of cement slurry is laid, and then a rigid bearing plate is placed on top. The bearing plate is then lightly tapped to squeeze out excess cement slurry, making the bearing plate parallel to the test surface. A jack should then be placed on the bearing plate, with the center of pressure of the jack coinciding with the center of the bearing plate. The device is then activated by the first handwheel 43. 1. By rotating the first double-ended lead screw 43, the distance between the two main support beams 11 can be symmetrically adjusted through the two first connecting blocks 111. When the main support beam 11 moves, the first locking block 112 provides a limit, making operation simple and highly accurate. The first limiting block 44, in conjunction with the first groove 131, provides a limit for the main extension beam 13 inserted between the two main support beams 11. 2. By rotating the second double-ended lead screw 53 through the second handwheel 531, the distance between the two main support beams 11 can be symmetrically adjusted through the two first connecting blocks 111. When the main support beam 11 moves, the first locking block 112 provides a limit, making operation simple and highly accurate. The first limiting block 44, in conjunction with the first groove 131, provides a limit for the main extension beam 13 inserted between the two main support beams 11. The main extension beam 13 between 11 provides a limit. The second box 51, along with the secondary beam 20, can be movably latched onto the end of the main beam 10 via the third locking block 54 and spring 55. Then, the integrated I-beam structure consisting of one main beam 10 and two secondary beams 20 is hoisted and the main beam 10 is erected on two temporary support piers. The center of the top of the jack is directly opposite the middle of the main beam 10. Several pads 31 are placed between several splicing components 22. The upper end of the anchor rod 32 passes between the secondary extension beams 23 and is anchored to the pads 31 via anchor plates 33, thereby holding the secondary beams 20 in place. Finally, other related system equipment is installed. The main beam 10 and secondary beams 20 can be pre-installed before erection, or... After the main beam 10 is erected, it can be adjusted and expanded to adapt to the testing bearing capacity requirements of different rock masses. After the arrangement is completed, the in-situ reaction force test of rock mass strength can be started. When the jack pushes the main beam 10, the bottom of the main beam 10 will receive the reaction force applied to the sample to complete the in-situ rock mass strength test. In this way, the main beam 10 and the secondary beam 20 can be combined into a whole, which can be hoisted and arranged more conveniently than the traditional method. The bearing capacity of the main beam 10 and the secondary beam 20 can be expanded and changed according to different rock mass strength test needs. The structure of the main beam 10 and the secondary beam 20 can be reused. It is not necessary to repeatedly make anchor pile reaction device beams with different indicators, reduce construction costs and difficulties, and improve project efficiency and progress.

[0060] It should be noted that the specific model and specifications of the pad 31, anchor rod 32, anchor plate 33, first double-ended screw 43 and second double-ended screw 53 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0061] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rock mass strength in-situ testing anchor pile reaction force device that is easy to expand and support, characterized in that, include Main beam (10); Sub-beams (20), the two sub-beams (20) are respectively movably connected to the upper ends of the main beam (10); An anchor pile mechanism (30) is installed on the sub-beam (20); The main beam (10) includes a main support beam (11), a connecting component (12), a main extension beam (13), and a main fastening component (14). Two main support beams (11) and one or more main extension beams (13) are arranged in parallel and spaced apart. The main extension beam (13) is arranged between two main support beams (11). The two main support beams (11) are movably connected by several pairs of connecting components (12) arranged on their upper and lower sides. The main fastening component (14) is arranged on the connecting component (12). The main fastening component (14) passes through the connecting component (12) and the main extension beam (13) and fixes the main extension beam (13) between the connecting components (12). A first connecting block (111) is arranged in the middle of the upper side of the main support beam (11), and two first locking blocks (112) are symmetrically arranged in the middle of the lower side of the main support beam (11). The connecting assembly (12) includes a first connecting plate (121) and a second connecting plate (122). One end of the first connecting plate (121) and one end of the second connecting plate (122) are respectively fixedly connected to the two main support beams (11). The other end of the second connecting plate (122) slides through the other end of the first connecting plate (121). The first connecting plate (121) has two first limiting grooves (1211) symmetrically opened on its inner side and two second limiting grooves (1212) symmetrically opened on its two sides. The second connecting plate (122) has two first protrusions (1221) symmetrically arranged on its inner side. The first protrusions (1221) pass through the first limiting grooves (1211) respectively. The other end of the second connecting plate (122) has two first wing plates (1222) symmetrically arranged on its two sides. The first wing plates (1222) pass through the second limiting grooves (1212) respectively. The main extension beam (13) has first grooves (131) symmetrically opened on the upper and lower middle parts respectively. The main fastening assembly (14) includes a first pin (141), a first handle (142), and a first nut (143). A plurality of first pins (141) are arranged side by side at even intervals on the lower side of the first handle (142). The first pins (141) pass through the middle of the first connecting plate (121), the middle of the second connecting plate (122), and both sides of the main extension beam (13). The first connecting plate (121), the second connecting plate (122), and the main extension beam (13) are fixed by the first nut (143) at its lower end. A first abutment (1421) is provided on the lower side of one end of the first handle (142). The first abutment (1421) abuts against the upper side of one of the second connecting plates (122). The sub-beam (20) includes a sub-support beam (21), a splicing assembly (22), a sub-extension beam (23), and a sub-fastening assembly (24). Two sub-support beams (21) and one or more sub-extension beams (23) are arranged in parallel and spaced apart. The sub-extension beam (23) is arranged between two sub-support beams (21). The two sub-support beams (21) are movably connected by several pairs of splicing assemblies (22) arranged on their upper and lower sides. The sub-fastening assembly (24) is arranged on the splicing assembly (22). The sub-fastening assembly (24) passes through the splicing assembly (22) and the sub-extension beam (23) and fixes the sub-extension beam (23) between the splicing assembly (22). A second connecting block (211) is arranged in the middle of the upper side of the sub-support beam (21), and two second locking blocks (212) are symmetrically arranged in the middle of the lower side of the sub-support beam (21).

2. The in-situ rock mass strength testing anchor pile reaction device according to claim 1, which is easy to expand and support, is characterized in that, The splicing assembly (22) includes a third connecting plate (221) and a fourth connecting plate (222). One end of the third connecting plate (221) and one end of the fourth connecting plate (222) are respectively fixedly connected to the two auxiliary support beams (21). The other end of the fourth connecting plate (222) slides through the other end of the third connecting plate (221). The inner side of the third connecting plate (221) has two symmetrically opened third limiting grooves (2211) and the two sides of the third connecting plate (221) have symmetrically opened fourth limiting grooves (2212). The inner side of the fourth connecting plate (222) has two symmetrically arranged second protrusions (2221), which pass through the third limiting grooves (2211). The other end of the fourth connecting plate (222) has two symmetrically arranged second wing plates (2222), which pass through the fourth limiting grooves (2212).

3. The in-situ rock mass strength testing anchor pile reaction device according to claim 2, which is easy to expand and support, is characterized in that... The secondary extension beam (23) has symmetrically provided second grooves (231) on the upper and lower middle parts respectively.

4. The in-situ rock mass strength testing anchor pile reaction device according to claim 2, which is easy to expand and support, is characterized in that, The secondary fastening assembly (24) includes a second pin (241), a second handle (242), and a second nut (243). Several second pins (241) are arranged side by side at even intervals on the lower side of the second handle (242). The second pins (241) pass through the middle of the third connecting plate (221), the middle of the fourth connecting plate (222), and both sides of the secondary extension beam (23). The second nut (243) at its lower end fixes the third connecting plate (221), the fourth connecting plate (222), and the secondary extension beam (23). A second abutment (2421) is provided on the lower side of one end of the second handle (242), and the second abutment (2421) abuts against the upper side of one of the fourth connecting plates (222).

5. The in-situ rock mass strength testing anchor pile reaction device according to claim 1, which is easy to expand and support, is characterized in that... The anchor pile mechanism (30) includes a pad (31), an anchor rod (32) and an anchor plate (33). A plurality of the pads (31) are arranged between a plurality of the splicing components (22). The upper end of the anchor rod (32) passes through the secondary extension beams (23) and is anchored to the pad (31) by the anchor plate (33).

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