A hydraulic engineering anchor rod pulling test device

Abstract

The utility model discloses a water conservancy project anchor rod draws test device, include: base, direction adjusting ball, jack, pull rod subassembly and displacement measurement subassembly, the base center is provided with the spherical recess and long hole for the anchor rod to pass through, and the base sets up on the bottom plate, direction adjusting ball rotation is arranged in the spherical recess of base, the jack is connected with direction adjusting ball through the bearing plate, pull rod subassembly is located on the bottom plate, and pull rod subassembly is matched with the jack, displacement measurement subassembly is located on the bottom plate of the other side, and displacement measurement subassembly is matched with the anchor rod. The water conservancy project anchor rod draws test device of the utility model can adapt to the situation that the exposed anchor rod and the concrete surface are not perpendicular, guarantees the stress direction and the anchor rod direction parallel, improves the precision of measurement and the convenience of operation simultaneously. Through the setting of pull rod subassembly, can effectively guarantee the jack and the exposed anchor rod axial coincidence, avoided the drawing error of traditional device because of the direction inconsistency.

Description

Technical Field

[0001] This utility model belongs to the field of anchorage testing technology, specifically relating to a pull-out test device for anchor bolts in water conservancy projects. Background Technology

[0002] In hydraulic engineering, anchor pull-out tests are an important method for evaluating anchoring performance. Existing anchor pull-out testing equipment has the following drawbacks:

[0003] (1) During the actual operation of the anchor pull-out test, you may encounter an inclined hole anchor rod that is not perpendicular to the concrete surface. If you simply use a bearing plate as a base, the base will not fit the concrete surface, resulting in inconsistent stress. During the test, the stressed anchor rod will gradually become perpendicular to the concrete surface, causing the jack to extend too much, making the operation more difficult and risky.

[0004] (2) Existing equipment relies on dial indicators and magnetic bases for displacement measurement. These devices are cumbersome to operate, are prone to falling off during the pulling process, and are prone to errors, especially in high-precision testing.

[0005] (3) If a horizontal anchor rod is encountered, the jack of the anchor rod puller will be pressed against the anchor rod by gravity, which will also cause the jack and the anchor rod to be out of sync. The axis of the puller that does not meet the specification requirement should be concentric with the axis of the rod body, which can easily lead to mechanical errors and thus affect the accuracy of the puller results. Utility Model Content

[0006] To address the aforementioned problems, embodiments of this utility model propose a hydraulic engineering anchor pull-out test device.

[0007] This utility model relates to a hydraulic engineering anchor pull-out testing device, comprising: a base, wherein a spherical groove and an elongated hole are provided at the center of the base for the anchor rod to pass through, and the base is mounted on a base plate; a directional adjustment ball, which is rotatably disposed in the spherical groove of the base; a jack, which is connected to the directional adjustment ball through a pressure plate; a tie rod assembly, which is located on the base plate on one side of the base and cooperates with the jack; and a displacement measuring assembly, which is located on the base plate on the other side of the base and cooperates with the anchor rod.

[0008] The directional adjustment ball has a through hole that runs through the directional adjustment ball axially and communicates with the elongated hole of the base. The top opening of the directional adjustment ball has a boss that extends outward to cooperate with the pressure plate.

[0009] A pressure plate is provided above the directional adjustment ball. The pressure plate has a through hole at its center. The pressure plate is sleeved around the outer perimeter of the boss above the directional adjustment ball. A pair of clamping plates are fixedly installed on the inner wall of the boss. The clamping plates are symmetrically arranged on both sides of the anchor rod. The clamping plates are long bars with a circular arc cross-section. The directional adjustment ball, the pressure plate, and the clamping plates are integrally formed.

[0010] A limit handle is installed on one side of the outer shell of the jack, and the limit handle cooperates with the pull rod assembly.

[0011] The pull rod assembly includes a limit hook that cooperates with the limit handle. The limit hook is fixed on the pull rod. The bottom of the pull rod is rotatably connected to the base plate. The pull rod is located on the side closer to the jack. On the side away from the jack, a rotating sleeve is provided with its top rotatably connected to the pull rod. A support rod is connected to the bottom of the rotating sleeve. The bottom of the support rod is rotatably connected to the base plate.

[0012] The top of the rotating sleeve is rotatably connected to the pull rod via screw two and a rotating shaft. The bottom of the rotating sleeve is connected to the support rod via screw one. The external threads on the outer surfaces of screw one and screw two have opposite directions of rotation. The interior of the rotating sleeve is hollow, and the interior of the rotating sleeve has internal threads that respectively mate with the external threads of screw one and screw two. Screw one is fixedly connected to the support rod or integrally formed.

[0013] The displacement measuring component includes a directional component mounted on the base plate. The directional component is located on the other side of the jack. The top of the directional component is connected to the displacement scale via a connecting rod. The displacement scale has scale markings.

[0014] The displacement scale is also connected to the anchor rod via a displacement plate. One end of the displacement plate is fastened to the end of the anchor rod via a magnetic cover plate, and the other end is connected to the displacement scale via a collar.

[0015] The steering assembly includes inner balls that are fixedly connected to the base plate and the connecting rod respectively. The outer surface of the inner balls is covered with hemispherical grooves. The two inner balls are connected by an arc-shaped outer clamp. There are two sets of arc-shaped outer clamps, which are symmetrically arranged on both sides of the two inner balls.

[0016] The arc-shaped outer clamp is integrally formed from two arc-shaped clamps and a connecting plate. The two arc-shaped clamps are located on both sides of the connecting plate, and the interior of the arc-shaped clamps is filled with hemispherical protrusions that match the hemispherical grooves on the inner sphere surface. Each connecting plate has a threaded hole in the middle, and the two sets of connecting plates are connected by bolts.

[0017] The beneficial effects of this utility model are that the hydraulic engineering anchor pull-out testing device can adapt to situations where the exposed anchor is not perpendicular to the concrete surface, ensuring that the force direction is parallel to the anchor direction, while improving measurement accuracy and ease of operation. Through the design of the pull rod assembly and the direction adjustment ball, the device effectively ensures that the jack and the exposed anchor are coaxial, avoiding pull-out errors caused by inconsistent directions in traditional devices. Furthermore, the displacement measuring assembly replaces the traditional dial indicator and magnetic base, not only improving measurement accuracy but also making the measurement process simpler and faster. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the hydraulic engineering anchor pull-out test device of this utility model.

[0019] Figure 2 This is a bottom view of the hydraulic engineering anchor pull-out test device of this utility model.

[0020] Figure 3 This is a schematic diagram of the direction adjustment ball of this utility model.

[0021] Figure 4 This is a schematic diagram showing the position of the clamping plate of this utility model.

[0022] Figure 5 This is a structural schematic diagram of the base of this utility model.

[0023] Figure 6 This is a schematic diagram of the rotating sleeve of this utility model.

[0024] Figure 7 This is a schematic diagram of the displacement scale of this utility model.

[0025] Figure 8 This is a schematic diagram of the orientation component of this utility model.

[0026] Figure 9 This is a schematic diagram of the arc-shaped outer clamp of this utility model.

[0027] Figure 10 This is a schematic diagram of the displacement plate of this utility model.

[0028] Figure label:

[0029] Base 1; elongated hole 101; spherical groove 102; directional adjustment ball 2; boss 201; pressure plate 3; jack 4; limit handle 401; clamping plate 402; anchor rod 5; tie rod assembly 6; tie rod 601; limit hook 602; rotating sleeve 603; support rod 604; rotating shaft 605; screw one 606; screw two 607; displacement measuring device 7; connecting rod 701; displacement scale 702; scale graduation 703; displacement plate 8; magnetic cover plate 801; collar 802; directional adjustment assembly 9; inner ball 901; arc-shaped outer clamping plate 92; bolt 903; hemispherical small groove 904; connecting plate 905; arc-shaped clamp 906; hemispherical small protrusion 907. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] like Figures 1-10 As shown, the hydraulic engineering anchor pull-out test device of this utility model includes: a base 1, a direction adjustment ball 2, a jack 4, a tie rod assembly 6, and a displacement measurement assembly 7. The center of the base 1 is provided with a spherical groove 102 for the anchor rod 5 to pass through and an elongated hole 101. The elongated hole 101 is set through the spherical groove 102, and the base 1 is fixedly mounted on the base plate by bolts. The base plate is in close contact with the concrete surface and can be firmly fixed to the concrete surface by expansion bolts.

[0032] An elongated hole 101 is opened at the center of the base 1, penetrating both the base 1 and the base plate. Specifically, the elongated hole 101 allows the base 1 to accommodate anchor rods 5 with an angle between the anchor rod 5 and the concrete normal within the range of 0°-45°, providing strong adaptability and meeting the requirements of anchor rod processes under different design and construction conditions. This ensures that pull-out tests can be carried out smoothly in complex environments. The clearance between the base 1 and the directional adjustment ball 2 is controlled at 0.1-0.2mm, and the lubrication between the two provides a buffering and protective function.

[0033] The directional adjustment ball 2 is rotatably disposed in the spherical groove 102 of the base 1. The directional adjustment ball 2 has a through hole that extends axially through it and communicates with the elongated hole 101 of the base 1. A boss 201, which mates with the pressure plate 3, extends outward from the top opening of the directional adjustment ball 2. In other words, the directional adjustment ball 2 can rotate within the spherical groove 102. The rotatable connection between the directional adjustment ball 2 and the base 1 ensures the strength and stability of force transmission. By adjusting the directional adjustment ball 2, the angle between its top opening and the elongated hole 101 can be adjusted.

[0034] A pressure plate 3 is installed above the directional adjustment ball 2. The pressure plate 3 has a through hole at its center. The inner diameter of the through hole is slightly larger than the outer diameter of the boss. The pressure plate 3 is sleeved around the boss 201 above the directional adjustment ball 2. Two clamping plates 402 are also symmetrically fixedly installed on the inner wall of the boss 201. The clamping plates 402 are long strips with a circular arc cross section. The clamping plates 402, the directional adjustment ball 2 and the pressure plate 3 are integrally formed structures, that is, the clamping plates 402, the directional adjustment ball 2 and the pressure plate 3 are fixedly connected to improve the overall strength.

[0035] Jack 4 is fitted onto the outside of clamping plate 402. Jack 4 is connected to directional adjusting ball 2 via pressure plate 3. Jack 4 is installed on pressure plate 3 by bolts. The length of clamping plate 402 is greater than half the length of the inner wall of jack 4.

[0036] A limit handle 401 is installed on one side of the outer shell of the jack 4. The limit handle 401 cooperates with the pull rod assembly 6. By adjusting the pull rod assembly 6, the direction of the jack 4 can be adjusted so that the jack 4 is coaxial with the anchor rod 5.

[0037] The tie rod assembly 6 is located on the base plate on one side of the base 1, and the tie rod assembly 6 is engaged with the jack 4; by adjusting the tie rod assembly 6 to make it parallel to the jack 4, the axis of the jack 4 is made to coincide with the axis of the anchor rod 5.

[0038] The pull rod assembly 6 includes a limit hook 602 that cooperates with the limit handle 401. The limit hook 602 is fixed on the pull rod 601. The bottom of the pull rod 601 is rotatably connected to the base plate through a rotating shaft 605. When installing the jack 4, the limit hook 602 can be hooked onto the limit handle 401 of the jack 4 by rotating the jack 4 and the pull rod 601.

[0039] A tie rod 601 is located on the side closer to the jack 4. On the side farther from the jack 4, a rotating sleeve 603 is rotatably connected to the tie rod 601 at its top. A support rod 604 is connected to the bottom of the rotating sleeve 603, and the bottom of the support rod 604 is rotatably connected to the base plate. A U-shaped tie rod limiting frame is provided on the base plate between the tie rod 601 and the support rod 604. The tie rod limiting frame is fixed to the base plate, and a guide groove for the tie rod 601 to move is provided in the middle of the frame. The tie rod 601 can only move within the guide groove in the middle of the frame. The tie rod limiting frame ensures that the tie rod 601 can only move on the plane of the guide groove, which is also in the same plane as the anchor rod 5. Therefore, by adjusting the tie rod 601, the axis of the jack 4 and the axis of the anchor rod 5 can be quickly aligned, ensuring that the jack 4 and the anchor rod 5 are coaxial and preventing the weight of the jack 4 from being entirely applied to the anchor rod 5 due to gravity.

[0040] The movable angle of the lever 601 is compatible with the rotation angle of the directional adjustment ball 2. The strength of the base 1 and the directional adjustment ball 2 is not less than the maximum output strength of the jack 4.

[0041] The top of the rotating sleeve 603 is connected to the pull rod 601 via the second screw 607 and the rotating shaft 605. The bottom of the rotating sleeve 603 is connected to the support rod 604 via the first screw 606. The first screw 606 and the support rod 604 are fixedly connected or integrally formed. The external threads on the outer surfaces of the first screw 606 and the second screw 607 have opposite directions of rotation. The interior of the rotating sleeve 603 is hollow, and the interior of the rotating sleeve 603 has internal threads that respectively mate with the external threads of the first screw 606 and the second screw 607.

[0042] The extension lengths of screw 606 and screw 607 can be adjusted by rotating the rotating sleeve 603, thus adjusting the direction of the pull rod 601. The axis direction of the jack 4 can then be adjusted by the limit hook 602 and the limit handle 401 to make it coincide with the axis of the anchor rod 5.

[0043] The displacement measuring component 7 is located on the bottom plate on the other side of the base 1, and the displacement measuring component 7 cooperates with the anchor rod 5. The amount of pull-out displacement of the anchor rod 5 is calculated by adjusting the displacement measuring device 7.

[0044] The displacement measuring component 7 includes a directional component 9 mounted on the base plate 1. The directional component 9 is located on the other side of the jack 4. The top of the directional component 9 is connected to the displacement scale 702 via a connecting rod 701. The displacement scale 702 has scale markings 703. Both the displacement scale 702 and the connecting rod 701 are cylindrical.

[0045] The displacement scale 702 is also connected to the anchor rod 5 via the displacement plate 8. One end of the displacement plate 8 is equipped with a magnetic cover 801, and the other end with a collar 802. One end of the displacement plate 8 is fastened to the end of the anchor rod 5 via the magnetic cover 801, and the other end is connected to the displacement scale 702 via the collar 802. The magnetic cover 801 has a bottle cap-like structure, that is, a cylindrical tube with an opening on one side of the flat plate. This cylindrical tube can be fastened to the top of the anchor rod 5 without falling off, improving the accuracy of displacement measurement. Furthermore, the magnetic cover 801 is made of magnets and can attract the anchor rod 5.

[0046] The inner diameter of the collar 802 is slightly larger than the outer diameter of the displacement scale 702, allowing the collar 802 to move back and forth on the displacement scale 702.

[0047] After the magnetic cover plate 801 is attached to the top of the anchor rod 5, it will move with the anchor rod 5. That is, the movement of the anchor rod 5 will drive the magnetic cover plate 801 to move. The movement of the magnetic cover plate 801 will drive the collar 802 to move through the displacement plate 8. The displacement of the anchor rod 5 can be read on the displacement scale 702.

[0048] The displacement scale 702 is lightweight, ensuring that the displacement scale 702 and the displacement plate 8 can be firmly fixed after the adjustment component 9 is tightened. The anchor rod head is magnetically connected to the displacement plate 8, which avoids the disadvantages of dial indicators such as easy detachment and counting errors.

[0049] The steering assembly 9 includes an inner ball 901 that is fixedly connected to the base plate and the connecting rod 701 respectively. The outer surface of the inner ball 901 is covered with small hemispherical grooves 904. The two inner balls 901 are connected by an arc-shaped outer clamp 902. There are two sets of arc-shaped outer clamps 902, which are symmetrically arranged on both sides of the two inner balls 901.

[0050] The arc-shaped outer clamp 902 is integrally formed from two arc-shaped clamps 906 and a connecting plate 905. The two arc-shaped clamps 906 are located on both sides of the connecting plate 905. The arc-shaped clamps 906 cooperate with the inner ball 901, and the interior of the arc-shaped clamps 906 is filled with hemispherical protrusions 907 that cooperate with the hemispherical grooves 904 on the surface of the inner ball 901. Each connecting plate 905 has a threaded hole in the middle, and the two sets of connecting plates 905 are connected by bolts 903.

[0051] By adjusting the directional component 9 to make the displacement scale 702 parallel to the anchor rod 5, once the position of the displacement scale 702 is determined, tighten the bolt 903 between the two arc-shaped outer clamps 902 so that the hemispherical protrusion 907 on the inner side of the arc-shaped clamp 906 can be inserted into the hemispherical groove 904 on the outer surface of the corresponding inner ball 901, thereby fixing the displacement scale 702.

[0052] The inner ball 901 and the arc-shaped outer clamp 902 can fit perfectly together and adapt to various angles in the space, ensuring the stability and firmness of the displacement scale 702, so that the movement of the displacement plate 8 can accurately reflect the displacement of the anchor rod.

[0053] In use, first place the base 1 and the base plate on the concrete surface, ensuring that the base plate is completely in contact with the contact surface, and simultaneously ensure that the anchor rod 5 passes through the elongated hole 101 in the base 1. Then, fix the base plate with expansion bolts. Next, install the directional adjustment ball 2, the clamping plate 402, and the bearing plate 3. Adjust the angle of the directional adjustment ball 2 so that it passes through the anchor rod 5. Finally, put the jack 4 on the clamping plate 402 and hang the limit hook 602 of the pull rod 601 on the limit handle 401 of the jack 4. Then, rotate the rotating sleeve 603 to adjust the angle of the pull rod 601 so that the axis of the jack 4 coincides with that of the anchor rod 5. Then, adjust the position of the directional adjustment component 9 and the displacement scale 702 so that the displacement plate 8 is perpendicular to the anchor rod 5. Put the magnetic cover plate 801 of the displacement plate 8 on the end of the anchor rod 5. Finally, tighten the bolt 903 in the directional adjustment component 9 to complete the installation of the device. During the pull-out test, the initial and final positions of the collar 802 on the displacement plate 8 are read. The difference between the two positions is the pull-out displacement of the anchor rod 5.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A hydraulic engineering anchor rod pull-out test device, characterized in that, include: The base has a spherical groove and an elongated hole at its center for the anchor rod to pass through, and the base is set on the bottom plate; A direction adjustment ball, which is rotatably disposed in a spherical groove in the base; A jack, wherein the jack is connected to a directional adjustment ball via a pressure plate; The pull rod assembly is located on the base plate on one side of the base and is used in conjunction with the jack. A displacement measuring component is located on the base plate on the other side of the base, and the displacement measuring component cooperates with the anchor rod.

2. The hydraulic engineering anchor rod pull-out test device according to claim 1, characterized in that, The directional adjustment ball has a through hole that runs through the directional adjustment ball axially and communicates with the elongated hole of the base. The top opening of the directional adjustment ball has a boss that extends outward to cooperate with the pressure plate.

3. The hydraulic engineering anchor rod pull-out test device according to claim 2, characterized in that, A pressure plate is provided above the directional adjustment ball. The pressure plate has a through hole at its center. The pressure plate is sleeved around the outer perimeter of the boss above the directional adjustment ball. A pair of clamping plates are fixedly installed on the inner wall of the boss. The clamping plates are symmetrically arranged on both sides of the anchor rod. The clamping plates are long bars with a circular arc cross-section. The directional adjustment ball, the pressure plate, and the clamping plates are integrally formed.

4. The hydraulic engineering anchor rod pull-out test device according to claim 1, characterized in that, A limit handle is installed on one side of the outer shell of the jack, and the limit handle cooperates with the pull rod assembly.

5. The hydraulic engineering anchor rod pull-out test device according to claim 4, characterized in that, The pull rod assembly includes a limit hook that cooperates with the limit handle. The limit hook is fixed on the pull rod. The bottom of the pull rod is rotatably connected to the base plate. The pull rod is located on the side closer to the jack. On the side away from the jack, a rotating sleeve is provided with its top rotatably connected to the pull rod. A support rod is connected to the bottom of the rotating sleeve. The bottom of the support rod is rotatably connected to the base plate.

6. The hydraulic engineering anchor rod pull-out test device according to claim 5, characterized in that, The top of the rotating sleeve is rotatably connected to the pull rod via screw two and a rotating shaft. The bottom of the rotating sleeve is connected to the support rod via screw one. The external threads on the outer surfaces of screw one and screw two have opposite directions of rotation. The rotating sleeve is hollow inside, and the inner wall of the rotating sleeve has internal threads that respectively mate with the external threads of screw one and screw two. Screw one is fixedly connected to the support rod or integrally formed.

7. The hydraulic engineering anchor rod pull-out test device according to claim 1, characterized in that, The displacement measuring component includes a directional component mounted on the base plate. The directional component is located on the other side of the jack. The top of the directional component is connected to the displacement scale via a connecting rod. The displacement scale has scale markings.

8. The hydraulic engineering anchor rod pull-out test device according to claim 7, characterized in that, The displacement scale is also connected to the anchor rod via a displacement plate. One end of the displacement plate is fastened to the end of the anchor rod via a magnetic cover plate, and the other end is connected to the displacement scale via a collar.

9. The hydraulic engineering anchor rod pull-out test device according to claim 7, characterized in that, The steering assembly includes inner balls that are fixedly connected to the base plate and the connecting rod respectively. The outer surface of the inner balls is covered with hemispherical grooves. The two inner balls are connected by an arc-shaped outer clamp. There are two sets of arc-shaped outer clamps, which are symmetrically arranged on both sides of the two inner balls.

10. The hydraulic engineering anchor rod pull-out test device according to claim 9, characterized in that, The arc-shaped outer clamp is integrally formed from two arc-shaped clamps and a connecting plate. The two arc-shaped clamps are located on both sides of the connecting plate, and the interior of the arc-shaped clamps is filled with hemispherical protrusions that match the hemispherical grooves on the inner sphere surface. Each connecting plate has a threaded hole in the middle, and the two sets of connecting plates are connected by bolts.

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