High strain sensor installation auxiliary device capable of rapidly and accurately positioning

Abstract

The utility model discloses a high-strain sensor installation auxiliary device capable of rapidly and accurately positioning. The high-strain sensor installation auxiliary device comprises a rhombic frame centering mechanism, a positioning connecting rod and a sensor installation positioning mechanism with telescopic performance. The rhombic frame centering mechanism frames the top end of a pile foundation and is tightly attached to the periphery of a pile body, a set of opposite side edges of the rhombic frame centering mechanism are respectively provided with a connecting part capable of sliding and positioning along the side edges, the two ends of the positioning connecting rod are hinged to the connecting parts on the two sides respectively, and the upper end of the sensor installing and positioning mechanism is installed on the connecting parts. The device is simple in structure and convenient to operate, positioning is achieved without calculation, the effect of accurate positioning is achieved directly through structural design, and efficiency is high; pile heads or pile caps with different pile diameters can be tightly attached to the rhombic frame structure, and the distance between the mounting position of the sensor and the pile top can be controlled through the telescopic rectangular pipe structure. And by utilizing the telescopic characteristic of the hinge structure, the folding storage can be easily realized.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation detection equipment, in particular to a high-strain sensor installation auxiliary device capable of rapid and accurate positioning. Background Art

[0002] At present, the means of testing the bearing capacity of pile bodies mainly include static load test and high strain method. The static load test has a large pile load and has strict requirements on the ground bearing capacity and space size of the site. Relatively speaking, the high strain method has smaller equipment, convenient and efficient testing, low cost, and is becoming more and more widely used.

[0003] The high strain method is a method that uses a heavy hammer to apply an impact pulse on the top of the pile and propagate it downward along the pile body to stimulate the soil resistance on the pile side and pile end, and then analyzes and calculates the pile foundation bearing capacity through the wave signal received by a pair of strain sensors and a pair of acceleration sensors installed symmetrically on the pile side. The high strain method detection has very strict requirements on the installation of sensors. Whether the sensor is installed in a standardized manner will directly affect the quality of the high strain detection signal.

[0004] At present, in actual operation, inspection personnel usually mark the hole positions for sensor installation by visual estimation or measurement with a ruler, and then drill holes and bury sensors. This makes it difficult to ensure that the accuracy of the sensor installation position meets the requirements of the specifications, which in turn affects the accuracy of data collection and reduces the accuracy of the test results. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a high strain sensor installation auxiliary device that can quickly and accurately position, thereby overcoming the problems of the prior art that the positioning accuracy is poor and it is difficult to achieve symmetrical installation.

[0006] The utility model is realized through the following technical scheme: a high-strain sensor installation auxiliary device that can quickly and accurately position, including a diamond frame centering mechanism, a positioning connecting rod and a sensor installation positioning mechanism with telescopic performance; the diamond frame centering mechanism frames the top of the pile foundation and is close to the surrounding of the pile body, and a group of pairs of side edges of the diamond frame centering mechanism are respectively provided with connecting parts that can slide and position along the side edges, the two ends of the positioning connecting rod are respectively hinged on the connecting parts on both sides, and the upper end of the sensor installation positioning mechanism is installed on the connecting parts.

[0007] The sensor installation positioning mechanism can adjust the position of the sensor; the diamond frame centering mechanism can be applied to piles of different diameters; the coordination of the positioning link and the connecting parts can make the sensor installation positioning mechanism close to the pile body of the pile foundation

[0008] The diamond frame centering mechanism includes a pair of first connecting rods in opposite positions, a pair of second connecting rods in opposite positions, and a pair of third connecting rods; the two first connecting rods and the two second connecting rods are connected by hinges to form a diamond frame, and the two first connecting rods are located on opposite sides of the diamond frame; first cylindrical pins are respectively provided at both ends of the first connecting rod, and a first slide groove penetrating the opposite side of the first connecting rod is provided in the extension direction of the first connecting rod; first pin holes are respectively provided at both ends of the second connecting rod, and a second slide groove penetrating the opposite side of the second connecting rod is provided in the extension direction of the second connecting rod; a second pin hole is provided at one end of the third connecting rod, and a second slide groove penetrating the opposite side of the third connecting rod is provided in the extension direction of the other part The first pin holes at both ends of the second connecting rod are respectively inserted into the first cylindrical pins of the two first connecting rods to form a hinge connection, and the second pin holes of the two third connecting rods are respectively inserted into the first cylindrical pin of the same first connecting rod, and the third sliding grooves of the two third connecting rods are respectively inserted into the first cylindrical pin of the same first connecting rod on the other side and can slide along it, and the two third connecting rods are cross-stacked up and down; the upper section of the first cylindrical pin is sleeved with a blind hole nut, and one end of the third connecting rod with a second pin hole is clamped between the first connecting rod and the blind hole nut; the connecting component can be slidably arranged in the second sliding groove. The diamond frame formed by the four connecting rods can freely control the expansion and contraction of the diamond frame by grasping any diagonal hinge point and moving it, so that the frame can fit closely to the pile body of different pile diameters. When the four connecting rods of the diamond frame are close to the pile side and tangent to the cylindrical pile side, according to the geometric knowledge: the center of the diamond inscribed circle is the intersection of the diamond diagonal lines, and the center of the pile top circular section can be determined by the intersection of the two third connecting rods. The blind hole nut cooperates with the first cylindrical pin and is fixed by tightening the four blind hole nuts to prevent the diamond frame structure from loosening and causing inaccurate positioning.

[0009] A positioning block is provided at the intersection of the two third connecting rods. The cross-section of the positioning block is a square, and four cylindrical legs are provided at the four corners of its bottom surface. The four legs are correspondingly inserted into the inner corners of the cross where the two third connecting rods intersect, thereby fixing the positioning block; a second cylindrical pin is provided at the center position of the top surface of the positioning block. When the first connecting rod and the second connecting rod of the rhombus frame are in close contact with the pile circumference (pile body), the second cylindrical pin corresponds to the center position of the circular cross section of the pile top.

[0010] The connecting component includes a connecting piece, a first nut and a second nut; a third cylindrical pin is provided at the lower part of the connecting piece, and a positioning bolt is provided at the upper part thereof; a thread is provided at the lower section of the positioning bolt, the positioning bolt is passed through the second slide groove from bottom to top, and the first nut is installed on the threaded section of the positioning bolt; the outer diameter of the first nut is larger than the diameter of the short side of the second slide groove, and the diameter of the lower part of the connecting piece is larger than the diameter of the short side of the second slide groove; the third cylindrical pin passes through the upper end of the sensor installation and positioning mechanism and is tightened with the second nut to realize a hinge connection.

[0011] A third pin hole is provided at one end of the positioning link, and a fourth slide groove is provided in the extension direction of the remaining part to penetrate the opposite side thereof; the upper section of the positioning bolt of the connecting component on one side is inserted into the third pin hole, and the upper section of the positioning bolt of the connecting component on the other side is inserted into the fourth slide groove; the second cylindrical pin is inserted into the fourth slide groove.

[0012] The sensor installation and positioning mechanism comprises a telescopic tube and a sensor positioning and mounting plate; the upper end of the telescopic tube is connected to the connecting component through a hinge, and the sensor positioning and mounting plate is installed at the lower end of the telescopic tube.

[0013] The telescopic tube is a telescopic rectangular tube, including an inner rectangular tube and an outer rectangular tube, the outer rectangular tube is sleeved on the outer periphery of the inner rectangular tube and can slide along the inner rectangular tube; a fastening bolt is provided on the outer rectangular tube, and the fastening bolt tightens or loosens the tube wall of the inner rectangular tube; the surface of the inner rectangular tube is provided with scales extending along the length direction of the tube.

[0014] The sensor positioning mounting plate includes a strain sensor mounting plate and an acceleration sensor mounting plate. The strain sensor mounting plate is fixedly connected to the outer rectangular tube. The acceleration sensor mounting plate is hinged to the strain sensor mounting plate, so that the acceleration sensor mounting plate can be rotated around the hinge to make it close to the side surface of the circular pile.

[0015] The strain sensor mounting plate is vertically provided with two first drilling positioning holes, and the acceleration sensor mounting plate is centrally provided with a second drilling positioning hole; the two first drilling positioning holes coincide with the axis of the telescopic rectangular tube, and the center of the line connecting the two first drilling positioning holes and the center of the second drilling positioning hole are located on the same horizontal line.

[0016] The distance between the centers of the two first drilling positioning holes is 80 mm. The first drilling positioning hole protrudes outward from the strain sensor mounting plate to form a cylindrical positioning hole perpendicular to the mounting plate, and the second drilling positioning hole protrudes outward from the acceleration sensor mounting plate to form a cylindrical positioning hole perpendicular to the mounting plate. The protruding design of the two drilling positioning holes and the hole diameter are adapted to the drill bit, which can constrain and guide the drilling, making it difficult for the drilling process to deviate, and ensuring that the drilling hole is perpendicular to the pile side surface.

[0017] Compared with the prior art, the advantages of the utility model are: the device does not require the aid of precision electronic equipment for measurement, nor does it require additional oil or electric assistance. It has a simple structure, is easy to operate, does not require positioning through calculations, and can directly achieve precise positioning through structural design, with high efficiency. The diamond frame structure can be retracted to fit closely to pile heads or pile caps of different pile diameters, and the telescopic rectangular tube structure can be used to control the distance between the sensor installation position and the pile top, which has a wide range of applicability. The device is provided with hinge structures in many places, and the telescopic characteristics of the hinge structure can be used to easily fold and store it, taking up little space and making it easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the utility model when working;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram of position 24;

[0020] Figure 3 for Figure 1 A partial enlarged schematic diagram of position 25;

[0021] Figure 4 This is a schematic diagram of the structure of the embodiment of the utility model after the pile foundation is removed;

[0022] Figure 5 This is a schematic diagram of the structural decomposition of the diamond frame centering mechanism of the embodiment of the utility model;

[0023] Figure 6 This is a structural schematic diagram of a diamond frame centering mechanism according to an embodiment of the utility model;

[0024] Figure 7 This is a structural schematic diagram of a sensor installation and positioning mechanism according to an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure decomposition of the sensor installation and positioning mechanism of the embodiment of the utility model;

[0026] Fig. 9 A top view of the embodiment of the utility model when working;

[0027] Fig.10It is a schematic diagram of the structure of the embodiment of the utility model after folding.

[0028] Meanings of reference numerals in the figure: 1. diamond frame centering mechanism; 11. first connecting rod; 111. first cylindrical pin; 112. first slide groove; 12. second connecting rod; 121. first pin hole; 122. second slide groove; 13. third connecting rod; 131. second pin hole; 132. third slide groove; 14. gasket; 15. blind hole nut; 16. positioning block; 161. support leg; 162. second cylindrical pin; 2. sensor installation positioning mechanism; 21. inner Rectangular tube; 22, outer rectangular tube; 23, fastening bolt; 24, connecting part; 241, connecting piece; 242, first nut; 243, second nut; 244, positioning bolt; 25, sensor positioning mounting plate; 251, strain sensor mounting plate; 252, acceleration sensor mounting plate; 253, first drilling positioning hole; 254, second drilling positioning hole; 3, positioning connecting rod; 31, third pin hole; 32, fourth slide groove; 4, pile foundation. DETAILED DESCRIPTION

[0029] The content of the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Example

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" in the embodiments of the utility model and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figures 1 to 10 , which is a high-strain sensor installation auxiliary device that can be quickly and accurately positioned, including a diamond frame centering mechanism 1, a positioning link 3 and a sensor installation positioning mechanism 2 with telescopic performance; the diamond frame centering mechanism 1 frames the top of the pile foundation 4 and is close to the surrounding of the pile body, and a group of pairs of side edges of the diamond frame centering mechanism 1 are respectively provided with connecting parts 24 that can slide and position along the side edges, the two ends of the positioning link 3 are respectively hinged on the connecting parts 24 on both sides, and the upper end of the sensor installation positioning mechanism 2 is installed on the connecting part 24.

[0034] The sensor installation positioning mechanism 2 can adjust the position of the sensor; the diamond frame centering mechanism 1 can be applied to pile foundations 4 of different pile diameters; the positioning link 3 and the connecting component 24 can make the sensor installation positioning mechanism 2 close to the pile body of the pile foundation 4

[0035] The diamond frame centering mechanism 1 includes a pair of first connecting rods 11 in opposite positions, a pair of second connecting rods 12 in opposite positions, and a pair of third connecting rods 13; the two first connecting rods 11 and the two second connecting rods 12 are connected by hinges to form a diamond frame, and the two first connecting rods 11 are located on opposite sides of the diamond frame; first cylindrical pins 111 are respectively provided at both ends of the first connecting rod 11, and a first slide groove 112 penetrating the opposite side of the first connecting rod 11 is provided in the extension direction of the first connecting rod 11; first pin holes 121 are respectively provided at both ends of the second connecting rod 12, and a second slide groove 122 penetrating the opposite side of the second connecting rod 12 is provided in the extension direction of the second connecting rod 12; a second pin hole 131 is provided at one end of the third connecting rod 13, and a third pin hole 131 penetrating the opposite side of the other part is provided in the extension direction of the third connecting rod 13 The first pin holes 121 at both ends of the second connecting rod 12 are respectively inserted into the first cylindrical pins 111 of the two first connecting rods 11 to form a hinge connection, and the second pin holes 131 of the two third connecting rods 13 are respectively inserted into the first cylindrical pin 111 of the same first connecting rod 11, and the third sliding grooves 132 of the two third connecting rods 13 are respectively inserted into the first cylindrical pin 111 of the same first connecting rod 11 on the other side and can slide along it, and the two third connecting rods 13 are cross-stacked up and down; the upper part of the first cylindrical pin 111 is sleeved with a blind hole nut 15, and one end of the third connecting rod 13 with the second pin hole 131 is clamped between the first connecting rod 11 and the blind hole nut 15; the connecting component 24 is slidably arranged in the second sliding groove 122. The rhombus frame formed by the four connecting rods can freely control the size of the rhombus frame by grasping any diagonal hinge point and moving, so that the frame can be closely attached to the pile body of different pile diameters. When the four connecting rods of the diamond frame are close to the pile side and tangent to the cylindrical pile side, according to the geometric knowledge: the center of the diamond inscribed circle is the intersection of the diamond diagonal lines, and the center of the pile top circular section can be determined by the intersection of the two third connecting rods 13. The blind hole nut 15 cooperates with the first cylindrical pin 111, and is fixed by tightening the four blind hole nuts 15, which can prevent the diamond frame structure from loosening and causing inaccurate positioning, and can also keep the first connecting rod 11 and the second connecting rod 12 always tangent to the pile body. In this embodiment, the first connecting rod 11 and the second connecting rod 12 are connecting rods of equal length, and the four connecting rods that form the diamond frame can be connected to a pair of sensor installation positioning mechanisms 2 below through the slide grooves of any group of parallel connecting rods. In this embodiment, a gasket 14 is installed between the connection position of the third connecting rod 13 and the second connecting rod 12, and the thickness of the gasket 14 is slightly larger than that of the third connecting rod 13, so that the intersection of the upper and lower third connecting rods 13 does not contact, avoiding friction between the two when sliding.

[0036] A positioning block 16 is provided at the intersection of the two third connecting rods 13. The cross section of the positioning block 16 is square, and four cylindrical legs 161 are provided at the four corners of its bottom surface. The four legs 161 are correspondingly inserted into the inner corners of the cross where the two third connecting rods 13 intersect, so as to fix the positioning block 16; a second cylindrical pin 162 is provided at the center position of the top surface of the positioning block 16. When the first connecting rod 11 and the second connecting rod 12 of the rhombus frame are in close contact with the pile circumference (pile body), the second cylindrical pin 162 corresponds to the center position of the circular cross section of the pile top.

[0037] The connecting component 24 includes a connecting piece 241, a first nut 242 and a second nut 243; a third cylindrical pin is provided at the lower part of the connecting piece 241, and a positioning bolt 244 is provided at the upper part thereof; the lower section of the positioning bolt 244 is provided with threads, the positioning bolt 244 is inserted into the second slide groove 122 from bottom to top, and the first nut 242 is installed on the threaded section of the positioning bolt 244; the outer diameter of the first nut 242 is larger than the diameter of the short side of the second slide groove 122, and the diameter of the lower part of the connecting piece 241 is larger than the diameter of the short side of the second slide groove 122; the third cylindrical pin passes through the upper end of the sensor installation positioning mechanism 2 and is tightened with the second nut 243 to realize the hinge connection. In this embodiment, loosening the second nut 243, allowing the telescopic rectangular tube to naturally swing to a vertical state under the action of gravity, and then tightening the second nut 243 can prevent the rectangular tube from swinging during drilling. After the sensor installation and positioning mechanism 2 is adjusted to slide to a suitable position, the position of the sensor installation and positioning mechanism 2 is fixed by tightening the first nut 242 ; and the rectangular telescopic tube can be prevented from swinging by tightening the second nut 243 .

[0038] A third pin hole 31 is provided at one end of the positioning link 3, and a fourth slide groove 32 is provided in the extension direction of the remaining part to penetrate the opposite side thereof; the upper section of the positioning bolt 244 of the connecting component 24 on one side is penetrated into the third pin hole 31, and the upper section of the positioning bolt 244 of the connecting component 24 on the other side is penetrated into the fourth slide groove 32; the second cylindrical pin 162 is penetrated into the fourth slide groove 32.

[0039] The sensor installation and positioning mechanism 2 comprises a telescopic tube and a sensor positioning and mounting plate 25; the upper end of the telescopic tube is connected to the connecting component 24 through a hinge, and the sensor positioning and mounting plate 25 is installed at the lower end of the telescopic tube.

[0040] The telescopic tube is a telescopic rectangular tube, including an inner rectangular tube 21 and an outer rectangular tube 22. The outer rectangular tube 22 is sleeved on the outer periphery of the inner rectangular tube 21 and can slide along it; a fastening bolt 23 is provided on the outer rectangular tube 22, and the fastening bolt 23 tightens or loosens the tube wall of the inner rectangular tube 21; the surface of the inner rectangular tube 21 is provided with a scale extending along the tube length direction. The outer rectangular tube 22 can slide along the inner rectangular tube 21 to adjust the telescopic length of the entire sensor installation positioning mechanism 2, so that the distance between the sensor installation position and the pile top meets the specification requirements. The scale on the surface of the inner rectangular tube 21 can be conveniently used to control the telescopic range of the sensor installation positioning mechanism 2 on both sides, so that the distance between the sensor installation position on both sides and the pile top is consistent. After adjusting the telescopic length of the rectangular shrink tube, tighten the fastening bolt 23 to prevent sliding again.

[0041] The sensor positioning mounting plate 25 includes a strain sensor mounting plate 251 and an acceleration sensor mounting plate 252. The strain sensor mounting plate 251 is fixedly connected to the outer rectangular tube 22, and the acceleration sensor mounting plate 252 is hinged to the strain sensor mounting plate 251, so that the acceleration sensor mounting plate can rotate around the hinge to make it close to the side surface of the circular pile.

[0042] The strain sensor mounting plate 251 is vertically provided with two first drilled positioning holes 253, and a second drilled positioning hole 254 is centrally provided on the acceleration sensor mounting plate 252; the two first drilled positioning holes 253 coincide with the axis of the telescopic rectangular tube, and the center of the line connecting the two first drilled positioning holes 253 and the center of the second drilled positioning hole 254 are located on the same horizontal line.

[0043] The distance between the centers of the two first drilling positioning holes 253 is 80 mm. The first drilling positioning hole 253 protrudes outward from the strain sensor mounting plate 251 to form a cylindrical positioning hole perpendicular to the mounting plate, and the second drilling positioning hole 254 protrudes outward from the acceleration sensor mounting plate 252 to form a cylindrical positioning hole perpendicular to the mounting plate. The protruding design of the two drilling positioning holes and the hole diameter matching the drill bit can constrain and guide the drilling, so that the drilling process is not easy to deviate, and ensure that the drilling is perpendicular to the pile side surface.

[0044] In this embodiment, the positioning link 3 cooperates with the sensor installation positioning mechanism 2 so that the sensor installation positioning mechanisms 2 on both sides are respectively located at the two ends of the diameter of the pile top circular cross-section and are symmetrical about the pile body axis.

[0045] When the equipment of this embodiment is working, the diamond frame centering mechanism 1 frames the top of the pile foundation 4 and is close to the four sides of the pile head. The two sensor installation and positioning mechanisms 2 are installed in the slide grooves of a group of first connecting rods 11 or a group of second connecting rods 12 of the diamond frame centering mechanism 1. The third cylindrical pin of the connecting piece 241 on the upper part of the two sensor installation and positioning mechanisms 2 and the second cylindrical pin 162 of the positioning block 16 in the diamond frame centering mechanism 1 are connected by the positioning connecting rod 3, so that the two sensor installation and positioning mechanisms 2 are symmetrical about the axis of the pile foundation 4 and can slide parallel to each other.

[0046] The working process of this embodiment is:

[0047] (1) First, expand the diamond frame, put the diamond frame centering mechanism 1 on the pile head of the pile foundation 4, and then tighten the diamond frame so that the four connecting rods of the frame are in close contact with the side of the pile body, and then tighten the four blind hole nuts 15 to prevent the diamond frame from loosening.

[0048] (2) Install the positioning block 16 so that its four cylindrical legs 161 are inserted into the inner angle position of the cross where the two third connecting rods 13 intersect. Install the positioning connecting rod 3 so that the third pin hole 31 at one end thereof is inserted into the positioning bolt 244 at the top end of one sensor installation positioning mechanism 2. At the same time, the second cylindrical pin 162 on the positioning block 16 and the positioning bolt 244 at the top end of the other sensor installation positioning mechanism 2 are placed in the fourth slide groove 32 of the positioning connecting rod 3, so that the centers of the three components remain in the same straight line and the two sensor installation positioning mechanisms 2 are symmetrical about the central axis of the pile.

[0049] (3) Slide the sensor installation positioning mechanism 2 installed at one end of the pin hole of the positioning link 3 along the second slide groove 122 to move it to the tangent point between the second link 12 and the pile body. Since the two sensor installation positioning mechanisms 2 are symmetrical about the pile axis, the sensor installation positioning mechanism 2 on the other side will also be at the tangent point. Tighten the first nuts 242 on the connecting parts 24 of the two sensor installation positioning mechanisms 2 to prevent sliding again.

[0050] (4) The connecting component 24 on the upper part of the sensor installation and positioning mechanism 2 is connected to the rectangular telescopic tube below through a hinge, so that the rectangular telescopic tube below can swing to a vertical position under the action of gravity. Tighten the second nut 243 at the hinge connection to prevent the rectangular telescopic tube from swinging again. After the rectangular tube is extended and retracted so that the distance between the sensor positioning installation plate 25 at the bottom and the pile top meets the specification requirements, tighten the fastening bolt 23; then adjust the sensor installation and positioning mechanism 2 on the other side to the same length according to the scale, and tighten the fastening bolt 23 on it in the same way.

[0051] (5) The acceleration sensor mounting plates 252 on both sides are rotated to make them close to the side of the pile body, and then the construction bolts are drilled through the drilling positioning holes on the strain sensor mounting plate 251 and the acceleration sensor mounting plate 252.

[0052] (6) After drilling is completed, remove the positioning link 3, the positioning block 16 and one of the third links 13, loosen the four blind hole nuts 15 on the diamond frame centering mechanism 1 and the first nuts 242 on the two sensor installation positioning mechanism 2 connecting parts 24, collapse the diamond frame to the minimum, loosen the fastening bolts 23 on the rectangular tube to shrink the telescopic rectangular tube to the shortest length and then tighten it, then loosen the two second nuts 243, fold the sensor installation positioning mechanism 2, and make it completely collapsed together with the diamond frame. The final storage effect is as follows: Fig.10 shown.

[0053] The above detailed description is a specific description of a feasible embodiment of the utility model. The embodiment is not intended to limit the patent scope of the utility model. Any equivalent implementation or modification that does not deviate from the utility model should be included in the patent scope of this case.

Claims

1. A high strain sensor installation auxiliary device capable of rapid and accurate positioning, characterized in that: It includes a diamond frame centering mechanism, a positioning link and a sensor installation and positioning mechanism with telescopic performance; the diamond frame centering mechanism frames the top of the pile foundation and is close to the periphery of the pile body, a pair of side edges of the diamond frame centering mechanism are respectively provided with connecting parts that can slide and position along the side edges, the two ends of the positioning link are respectively hinged on the connecting parts on both sides, and the upper end of the sensor installation and positioning mechanism is installed on the connecting parts; The diamond frame centering mechanism includes a pair of first connecting rods in opposite positions, a pair of second connecting rods in opposite positions, and a pair of third connecting rods; the two first connecting rods and the two second connecting rods are connected by hinges to form a diamond frame, and the two first connecting rods are located on opposite sides of the diamond frame; first cylindrical pins are respectively provided at both ends of the first connecting rod, and a first slide groove penetrating the opposite side of the first connecting rod is provided in the extension direction of the first connecting rod; first pin holes are respectively provided at both ends of the second connecting rod, and a second slide groove penetrating the opposite side of the second connecting rod is provided in the extension direction of the second connecting rod; a second pin hole is provided at one end of the third connecting rod, and a second slide groove penetrating the opposite side of the third connecting rod is provided in the extension direction of the other part The third slide groove is passed through; the first pin holes at both ends of the second connecting rod are respectively sleeved in the first cylindrical pins of the two first connecting rods to form a hinge connection, the second pin holes of the two third connecting rods are respectively sleeved in the first cylindrical pin of the same first connecting rod, the third slide grooves of the two third connecting rods are respectively sleeved in the first cylindrical pin of the same first connecting rod on the other side and can slide along it, and the two third connecting rods are cross-stacked up and down; the upper section of the first cylindrical pin is sleeved with a blind hole nut, and one end of the third connecting rod with the second pin hole is clamped between the first connecting rod and the blind hole nut; the connecting component is slidably arranged in the second slide groove.

2. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 1 is characterized in that: A positioning block is provided at the intersection of the two third connecting rods. The cross-section of the positioning block is a square, and four cylindrical legs are provided at the four corners of its bottom surface. The four legs are correspondingly inserted into the inner corners of the cross where the two third connecting rods intersect; a second cylindrical pin is provided at the center position of the top surface of the positioning block.

3. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 2 is characterized in that: The connecting component includes a connecting piece, a first nut and a second nut; a third cylindrical pin is provided at the lower part of the connecting piece, and a positioning bolt is provided at the upper part thereof; a thread is provided at the lower section of the positioning bolt, the positioning bolt is passed through the second slide groove from bottom to top, and the first nut is installed on the threaded section of the positioning bolt; the outer diameter of the first nut is larger than the diameter of the short side of the second slide groove, and the diameter of the lower part of the connecting piece is larger than the diameter of the short side of the second slide groove; the third cylindrical pin passes through the upper end of the sensor installation and positioning mechanism and is tightened with the second nut to realize a hinge connection.

4. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 3 is characterized in that: A third pin hole is provided at one end of the positioning link, and a fourth slide groove is provided in the extension direction of the remaining part to penetrate the opposite side thereof; the upper section of the positioning bolt of the connecting component on one side is inserted into the third pin hole, and the upper section of the positioning bolt of the connecting component on the other side is inserted into the fourth slide groove; the second cylindrical pin is inserted into the fourth slide groove.

5. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 1 is characterized in that: The sensor installation and positioning mechanism comprises a telescopic tube and a sensor positioning and mounting plate; the upper end of the telescopic tube is connected to the connecting component through a hinge, and the sensor positioning and mounting plate is installed at the lower end of the telescopic tube.

6. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 5 is characterized in that: The telescopic tube is a telescopic rectangular tube, including an inner rectangular tube and an outer rectangular tube, the outer rectangular tube is sleeved on the outer periphery of the inner rectangular tube and can slide along the inner rectangular tube; a fastening bolt is provided on the outer rectangular tube, and the fastening bolt tightens or loosens the tube wall of the inner rectangular tube; the surface of the inner rectangular tube is provided with scales extending along the length direction of the tube.

7. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 6 is characterized in that: The sensor positioning mounting plate comprises a strain sensor mounting plate and an acceleration sensor mounting plate. The strain sensor mounting plate is fixedly connected to the outer rectangular tube, and the acceleration sensor mounting plate is hingedly connected to the strain sensor mounting plate.

8. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 7 is characterized in that: The strain sensor mounting plate is vertically provided with two first drilling positioning holes, and the acceleration sensor mounting plate is centrally provided with a second drilling positioning hole; the two first drilling positioning holes coincide with the axis of the telescopic rectangular tube, and the center of the line connecting the two first drilling positioning holes and the center of the second drilling positioning hole are located on the same horizontal line.

9. The high strain sensor installation auxiliary device capable of rapid and accurate positioning according to claim 8, characterized in that: The distance between the centers of the two first drilled positioning holes is 80 mm. The first drilled positioning hole protrudes outward from the strain sensor mounting plate to form a cylindrical positioning hole perpendicular to the mounting plate. The second drilled positioning hole protrudes outward from the acceleration sensor mounting plate to form a cylindrical positioning hole perpendicular to the mounting plate.

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