Fabricated rock-soil body in-situ load test device

Abstract

The utility model discloses an assembly type rock-soil body in-situ load test device which comprises an upper force transmission assembly, a lower force transmission assembly and a hydraulic device connected between the upper force transmission assembly and the lower force transmission assembly, and the upper force transmission assembly and the lower force transmission assembly respectively comprise a plurality of force transmission units which are sequentially connected. Two ends of the force transmission unit are connected with a male flange plate and a female flange plate, an outer ring of the male flange plate is connected with a guide convex part, an outer ring of the female flange plate is correspondingly provided with a guide groove, the outer ring of the male flange plate is connected with a round hole, and the outer ring of the female flange plate is correspondingly connected with a waist-shaped hole. Matched connection of the male flange plates and the female flange plates of the two adjacent force transmission units is facilitated by arranging the guide convex parts and the guide grooves which are matched with each other, assembly errors caused by machining and production can be increased due to the fact that the kidney-shaped holes are matched with the round holes, and therefore installation is more convenient and faster.

Description

Technical Field

[0001] This utility model relates to the technical field of in-situ load testing devices, and in particular to a prefabricated in-situ load testing device for soil and rock masses. Background Technology

[0002] The physical and mechanical parameters of rock mass are the basic data for geotechnical engineering. If accurate values ​​are not obtained, the strength design, deformation verification, and stability requirements of any rock mass project cannot be accurately designed and evaluated. Therefore, most engineering specifications include safety factors to increase safety assurance.

[0003] The strength and deformation characteristics of soil and rock masses are typically obtained through laboratory compression tests or in-situ load tests. Soil and rock masses are formed through long-term geological changes, and under external forces, their mechanical properties exhibit heterogeneity, discontinuity, anisotropy, and inelasticity. Therefore, the most direct and reliable way to obtain their mechanical properties is through in-situ load tests. In-situ load tests preserve the natural structure and environmental conditions of soil and rock masses as much as possible, ensuring that the measured mechanical parameters are accurate and valuable for engineering reference.

[0004] Existing technology, such as the prefabricated in-situ load testing device for soil and rock disclosed in patent application number CN202220342962.5, includes an upper force transmission component, a lower force transmission component, and a hydraulic device located between the two. The upper force transmission component is connected at both ends to an upper top plate and an upper pressure plate, respectively, while the lower force transmission component is connected at both ends to a lower pressure plate and a lower top plate, respectively. The upper and lower force transmission components are each composed of one or more force transmission units connected together. The force transmission units, the force transmission components and the upper pressure plate, and the force transmission components and the lower pressure plate are connected by detachable fastening devices. A first protection device and a second protection device are installed around the hydraulic device. This device can be installed and fixed on-site, is easy to disassemble, greatly reduces testing time, and is convenient for reuse. The number of force transmission components can be adjusted to meet the height requirements of the on-site testing environment. The dual protection devices ensure the safety of the hydraulic device and the entire device during the test, preventing accidents.

[0005] Although the above design adopts modular force transmission components and a dual protection structure, it still has the following technical defects: due to the need for manual on-site installation, the flange connection of the force transmission unit needs to be repeatedly adjusted, the installation time is long, and the manual alignment efficiency is low. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a prefabricated in-situ load testing device for soil and rock masses, which enables rapid docking and installation of the force transmission unit.

[0007] According to a first aspect of the present invention, a prefabricated in-situ load testing device for soil and rock includes an up-force transmission component, a down-force transmission component, and a hydraulic device connected between the up-force transmission component and the down-force transmission component. Both the up-force transmission component and the down-force transmission component include a plurality of force transmission units connected in sequence. Both ends of the force transmission unit are connected to a male flange and a female flange. A guide protrusion is connected to the outer ring of the male flange, and a guide groove is correspondingly opened on the outer ring of the female flange. A round hole is connected to the outer ring of the male flange, and a waist-shaped hole is correspondingly connected to the outer ring of the female flange.

[0008] The prefabricated in-situ load testing device for soil and rock according to the present utility model has at least the following beneficial effects: by setting matching guide protrusions and guide grooves, it is convenient for the male flange and female flange of two adjacent force transmission units to match and connect with each other, and the presence of waist-shaped holes with round holes can increase the assembly error caused by processing and production, thereby making installation more convenient and faster.

[0009] According to some embodiments of this utility model, a snap-fit ​​block is fixedly connected to the side end of the pipe body of the male flange, and a first insertion hole is opened at the side end of the snap-fit ​​block; a slot and a sliding groove communicating with the slot are opened on the inner wall of the pipe body of the female flange, the slot is adapted to the snap-fit ​​block, the snap-fit ​​block is adapted to the sliding groove, a second insertion hole is opened at the side end of the female flange, a pin is inserted into the second insertion hole of the female flange, one end of the pin is inserted into the slot, and a connecting plate is fixedly connected to the other end of the pin away from the female flange, and a spring is fixedly connected between the connecting plate and the female flange.

[0010] According to some embodiments of this utility model, the spring is a tension spring.

[0011] According to some embodiments of the present invention, the first socket and the second socket have the same diameter, and the pin is adapted to the first socket and the second socket.

[0012] According to some embodiments of the present invention, when the first socket is aligned with the second socket, the circular hole is aligned with the oblong hole.

[0013] According to some embodiments of the present invention, the male flange is connected to the female flange by bolts that pass through the round hole and the oblong hole in sequence, and a nut is threaded onto the portion of the bolt that protrudes from the oblong hole.

[0014] According to some embodiments of the present invention, when the male flange and the female flange are connected, a buffer pad is provided between the male flange and the female flange.

[0015] According to some embodiments of the present invention, the guide groove is an annular groove.

[0016] According to some embodiments of the present invention, there are at least two guide protrusions that are evenly spaced apart. When the male flange and the female flange are paired and connected, the guide protrusions are connected to the guide grooves.

[0017] According to some embodiments of the present invention, the guide protrusion is an annular protrusion structure adapted to the guide groove. When the male flange and the female flange are paired and connected, the guide protrusion is connected in the guide groove.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of the force transmission unit of the prefabricated in-situ load testing device for soil and rock in an embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram of the male flange of the assembled in-situ load testing device for soil and rock in an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the male flange of the prefabricated in-situ load testing device for soil and rock mass according to another embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the mother flange of the assembled in-situ load testing device for soil and rock in an embodiment of this utility model.

[0024] 100. Force transmission unit; 200. Male flange; 210. Guide protrusion; 220. Round hole; 230. Snap-fit ​​block; 231. First insertion hole; 300. Female flange; 310. Guide groove; 320. Waist-shaped hole; 331. Slot; 332. Slide groove; 333. Second insertion hole; 340. Pin; 350. Connecting plate; 360. Spring. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the prefabricated in-situ load testing device for soil and rock according to an embodiment of the present invention includes an up-force transmission component (not shown in the figure), a down-force transmission component (not shown in the figure), and a hydraulic device (not shown in the figure) connecting the up-force transmission component and the down-force transmission component. Both the up-force transmission component and the down-force transmission component include a plurality of force transmission units 100 connected in sequence. Both ends of the force transmission unit 100 are connected to a male flange 200 and a female flange 300. A guide protrusion 210 is connected to the outer ring of the male flange 200, and a guide groove 310 is correspondingly opened on the outer ring of the female flange 300. A round hole 220 is connected to the outer ring of the male flange 200, and a waist-shaped hole 320 is correspondingly connected to the outer ring of the female flange 300.

[0030] In actual use, by setting the matching guide protrusion 210 and guide groove 310, the male flange 200 and female flange 300 of two adjacent force transmission units 100 can be matched and connected to each other, thereby enabling the force transmission unit 100 to be quickly connected and installed. The presence of the oblong hole 320 and the round hole 220 can increase the assembly error caused by processing and production, thus making the installation more convenient and faster.

[0031] In some specific embodiments of this utility model, it may also have the following additional technical features: a snap-fit ​​block 230 is fixedly connected to the side end of the pipe body of the male flange 200, and a first insertion hole 231 is opened on the side end of the snap-fit ​​block 230; a slot 331 and a sliding groove 332 communicating with the slot 331 are opened on the inner wall of the pipe body of the female flange 300, the slot 331 is adapted to the snap-fit ​​block 230, the snap-fit ​​block 230 is adapted to the sliding groove 332, a second insertion hole 333 is opened on the side end of the female flange 300, a pin 340 is inserted into the second insertion hole 333 of the female flange 300, one end of the pin 340 is inserted into the slot 331, and the other end of the pin 340 away from the female flange 300 is fixedly connected to a connecting plate 350, and a spring 360 is fixedly connected between the connecting plate 350 and the female flange 300.

[0032] Specifically, the pipe body of the male flange 200 is smaller than that of the female flange 300. Through the above design, the pipe body of the male flange 200 can be inserted into the female flange 300, thereby completing the connection between the snap-fit ​​block 230 and the slide groove 332.

[0033] In some specific embodiments of this utility model, it may also have the following additional technical features: the spring 360 is a tension spring 360.

[0034] In some specific embodiments of this utility model, it may also have the following additional technical features: the diameter of the first socket 231 and the second socket 333 is the same, and the pin 340 is adapted to the first socket 231 and the second socket 333.

[0035] In some specific embodiments of this utility model, it may also have the following additional technical features: when the first socket 231 is aligned with the second socket 333, the round hole 220 is aligned with the oblong hole 320.

[0036] In some specific embodiments of this utility model, it may also have the following additional technical features: the male flange 200 is connected to the female flange 300 by bolts (not shown in the figure) that pass through the round hole 220 and the oblong hole 320 in sequence, and a nut (not shown in the figure) is threaded on the part of the bolt that passes through the oblong hole 320.

[0037] In some specific embodiments of this utility model, it may also have the following additional technical features: when the male flange 200 and the female flange 300 are connected, a buffer pad (not shown in the figure) is provided between the male flange 200 and the female flange 300. By providing a buffer pad, the local concentrated stress can be better distributed to the entire device when the whole is under pressure.

[0038] In some specific embodiments of this utility model, it may also have the following additional technical features: the guide groove 310 is an annular groove.

[0039] refer to Figure 2 As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: there are at least two guide protrusions 210 and they are evenly spaced apart. When the male flange 200 and the female flange 300 are paired and connected, the guide protrusions 210 are connected in the guide grooves 310.

[0040] refer to Figure 3 As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: the guide protrusion 210 is an annular protrusion structure adapted to the guide groove 310. When the male flange 200 and the female flange 300 are paired and connected, the guide protrusion 210 is connected in the guide groove 310.

[0041] Through the above design, after the snap-fit ​​block 230 is placed into the slide groove 332 and the guide protrusion 210 is aligned with the guide groove 310, the pin 340 is pulled out of the slot 331 while the male flange 200 is rotated until the snap-fit ​​block 230 enters the slot 331. The pin 340 is released, and under the pulling force of the spring 360, the pin 340 is reset and passes through the second insertion hole 333 and the first insertion hole 231 in sequence. The pin 340 is then engaged with the snap-fit ​​block 230. The quick positioning between adjacent force transmission units 100 is achieved through the guide protrusion 210 and the guide groove 310, the snap-fit ​​block 230 and the slot 331, and the pin 340 and the first insertion hole 231 and the second insertion hole 333. The combination of the round hole 220 and the oblong hole 320 has a higher assembly tolerance, thus enabling quick assembly and installation, especially when multiple force transmission units 100 need to be connected.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A prefabricated in-situ load testing device for soil and rock, comprising an upper force transmission component, a lower force transmission component, and a hydraulic device connected between the upper force transmission component and the lower force transmission component, wherein both the upper force transmission component and the lower force transmission component comprise a plurality of force transmission units (100) connected in sequence, characterized in that, The force transmission unit (100) is connected to a male flange (200) and a female flange (300) at both ends. A guide protrusion (210) is connected to the outer ring of the male flange (200), and a guide groove (310) is correspondingly opened on the outer ring of the female flange (300). A round hole (220) is connected to the outer ring of the male flange (200), and a waist-shaped hole (320) is correspondingly connected to the outer ring of the female flange (300).

2. The prefabricated in-situ load testing device for soil and rock mass according to claim 1, characterized in that, A snap-fit ​​block (230) is fixedly connected to the side end of the pipe body of the male flange (200), and a first insertion hole (231) is opened on the side end of the snap-fit ​​block (230); a slot (331) and a sliding groove (332) communicating with the slot (331) are opened on the inner wall of the pipe body of the female flange (300), the slot (331) is adapted to the snap-fit ​​block (230), and the snap-fit ​​block (230) is adapted to the sliding groove (332). A second insertion hole (333) is provided on the side end of the flange (300). A pin (340) is inserted into the second insertion hole (333) of the female flange (300). One end of the pin (340) is inserted into the slot (331). The other end of the pin (340) away from the female flange (300) is fixedly connected to a connecting plate (350). A spring (360) is fixedly connected between the connecting plate (350) and the female flange (300).

3. The prefabricated in-situ load testing device for soil and rock mass according to claim 2, characterized in that, The spring (360) is a tension spring (360).

4. The prefabricated in-situ load testing device for soil and rock mass according to claim 3, characterized in that, The first socket (231) and the second socket (333) have the same diameter, and the pin (340) is adapted to the first socket (231) and the second socket (333).

5. The prefabricated in-situ load testing device for soil and rock mass according to claim 4, characterized in that, When the first socket (231) is aligned with the second socket (333), the round hole (220) is aligned with the waist-shaped hole (320).

6. The prefabricated in-situ load testing device for soil and rock mass according to claim 5, characterized in that, The male flange (200) is connected to the female flange (300) by bolts that pass through the round hole (220) and the oblong hole (320) in sequence, and a nut is threaded onto the part of the bolt that protrudes from the oblong hole (320).

7. The prefabricated in-situ load testing device for soil and rock mass according to claim 1, characterized in that, When the male flange (200) and the female flange (300) are connected, a buffer pad is provided between the male flange (200) and the female flange (300).

8. The prefabricated in-situ load testing device for soil and rock mass according to claim 1, characterized in that, The guide groove (310) is an annular groove.

9. The prefabricated in-situ load testing device for soil and rock mass according to claim 8, characterized in that, The guide protrusions (210) are at least two and evenly spaced. When the male flange (200) and the female flange (300) are paired and connected, the guide protrusions (210) are connected in the guide grooves (310).

10. The prefabricated in-situ load testing device for soil and rock mass according to claim 8, characterized in that, The guide protrusion (210) is an annular protrusion structure adapted to the guide groove (310). When the male flange (200) and the female flange (300) are paired and connected, the guide protrusion (210) is connected in the guide groove (310).

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