Adjustable three-point supporting frame for high-speed railway roadbed detection

Abstract

The utility model provides an adjustable high-speed railway roadbed detection three-point support frame, which comprises a mounting mechanism, a support rod and a measuring arm, the mounting mechanism comprises a fixed seat and a limiting frame, and the top of the fixed seat is provided with a mounting groove. The supporting rod and the measuring arm of the three-point supporting frame are of an integrated structure, the supporting rod is installed between the fixing base and the limiting frame through the ball, the limiting frame is blocked on the outer side of the ball under the elastic force of the spring, the three-point supporting frame can be conveniently and rapidly installed and disassembled through installation mechanisms such as the fixing base and the limiting frame, and operation is easy and convenient; according to the three-point supporting frame, the displacement sensor can be fixedly installed conveniently through the fixing ring and the second fastening knob, the displacement sensor is adjusted through the fixing ring and the installation plate, a measuring rod of the displacement sensor can make contact with the top of the measuring datum cross beam conveniently, follow-up settlement detection is facilitated, and the practicability of the three-point supporting frame can be improved.

Description

Technical Field

[0001] This utility model relates to the field of high-speed railway subgrade coefficient detection technology, specifically an adjustable high-speed railway subgrade detection three-point support frame. Background Technology

[0002] High-speed railway subgrade is the fundamental structure in high-speed railway engineering that supports the fixed track, transmits track gravity and the dynamic forces of trains, and is a prerequisite for ensuring the safe and stable operation of trains. Controlling the quality of high-speed railway subgrade filling is an important guarantee for effectively managing the subgrade's bearing capacity and settlement deformation. The subgrade coefficient is a key control indicator in the testing of subgrade fill compaction quality, reflecting the compressibility of the soil surface under plane pressure.

[0003] The method for testing the subgrade coefficient of high-speed railway subgrade is as follows: A bearing plate is placed on top of the test point of the high-speed railway subgrade, and a pressure sensor is installed at the center of the top of the bearing plate. A pressure cylinder is installed on the top of the pressure sensor, and the pressure cylinder is magnetically fixed to the loading vehicle through a magnetic connector at its top. The pressure cylinder applies a load to the bearing plate, and the settlement under different loads is measured by a displacement sensor. The subgrade coefficient is calculated based on the load and settlement. In this process, a three-point support frame is required to fix the displacement sensor and other equipment. The existing three-point support frame usually includes an L-shaped accessory, a measuring arm, a measuring reference frame, and a support beam. The installation requires assembly of each part, which is relatively complicated and reduces the efficiency of high-speed railway subgrade testing, resulting in low practicality.

[0004] Therefore, this utility model provides an adjustable three-point support frame for high-speed railway subgrade inspection, which typically includes an L-shaped accessory, a measuring arm, a measuring reference frame, and a support beam. The installation requires assembling the various parts, which is relatively complicated and reduces the efficiency of high-speed railway subgrade inspection, resulting in low practicality. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an adjustable three-point support frame for high-speed railway subgrade testing, thereby solving the problems mentioned in the background. The support rod and measuring arm of this utility model are integrated into one structure, which facilitates quick installation of the three-point support frame through the installation mechanism. Installation and disassembly are simple and convenient, thus improving the practicality of the three-point support frame.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable three-point support frame for high-speed railway subgrade testing, comprising an installation mechanism, a support rod, and a measuring arm. The installation mechanism includes a fixed base and a limiting frame. The top of the fixed base has an installation groove. The support rod is L-shaped, with a ball fixedly mounted at one end of the support rod corresponding to the installation groove. One end of the limiting frame is slidably mounted inside the bottom of the fixed base, and the top end of the limiting frame is limited to the outside of the ball. The measuring arm is rotatably mounted at the top of the support rod. The measuring arm includes an installation plate and a fixing ring, with the fixing ring fixedly connected to one end of the installation plate. A reinforcing sleeve is fixedly mounted on the outer side of the upper end of the support rod.

[0007] Furthermore, the ball is snapped into the inside of the mounting groove, and a spring is fixedly installed between the inner end of the limiting frame and the inner wall of the fixing seat.

[0008] Furthermore, the limiting frame is U-shaped, and a groove is provided on the bottom wall of the upper end of the limiting frame, with the top of the sphere engaging inside the groove.

[0009] Furthermore, a connecting rod is fixedly connected between the front and rear support rods, and a fixing rod is vertically fixedly installed at the middle position of the bottom of the connecting rod.

[0010] Furthermore, fixing plates are fixedly installed on the outer walls of the front and rear reinforcing sleeves, and magnets are fixedly installed inside a section of the fixing plates on both sides.

[0011] Furthermore, one end face of the fixing plates on both sides and one end of the magnet are in the same vertical plane, and a measuring reference beam is attached to one side of the fixing plates on both the front and rear sides.

[0012] Furthermore, the other end of the mounting plate is rotatably mounted on the outer side of the top of the support rod, and a first fastening knob is screwed onto the inside of the other end of the mounting plate, with the inner end of the first fastening knob in close contact with the support rod.

[0013] Furthermore, a notch is provided inside one end of the fixing ring, and second fastening knobs are screwed into the interior of the fixing ring on both the front and rear sides. The fixing ring is positioned above the measuring reference beam.

[0014] The beneficial effects of this utility model are as follows: The adjustable high-speed railway subgrade detection three-point support frame of this utility model has an integrated structure of support rod and measuring arm. The support rod is installed between the fixed seat and the limiting frame through a ball. The limiting frame is blocked on the outside of the ball under the elastic force of the spring, which can improve the stability of the fixed seat, limiting frame and support rod. It is convenient to quickly install and disassemble the three-point support frame through the installation mechanism such as the fixed seat and limiting frame. The operation is simple and convenient. The fixed plate and magnet can set the measuring reference beam under the measuring arm. The fixed ring and the second fastening knob can be used to fix the displacement sensor. The fixed ring and the mounting plate can be used to adjust the displacement sensor, so that the measuring rod of the displacement sensor can contact the top of the measuring reference beam. This facilitates the subsequent detection of settlement and improves the practicality of the three-point support frame. Attached Figure Description

[0015] Figure 1 This is a structural diagram of an adjustable three-point support frame for high-speed railway subgrade testing according to the present invention;

[0016] Figure 2 This is a front sectional view of an adjustable three-point support frame for high-speed railway subgrade testing according to the present invention.

[0017] Figure 3 This is a structural diagram of the measuring arm of an adjustable three-point support frame for high-speed railway subgrade inspection according to this utility model;

[0018] Figure 4 This is a cross-sectional view of the installation support mechanism of an adjustable high-speed railway subgrade inspection three-point support frame according to the present invention;

[0019] Figure 5 This is a structural diagram of the installation support mechanism of an adjustable high-speed railway subgrade inspection three-point support frame according to the present invention;

[0020] Figure 6 This is a cross-sectional view of the measuring arm of an adjustable three-point support frame for high-speed railway subgrade testing according to this utility model.

[0021] In the diagram: 1. Fixed base; 2. Limiting frame; 3. Support rod; 4. Connecting rod; 5. Fixed rod; 6. Reinforcing sleeve; 7. Fixed plate; 8. Mounting plate; 9. Fixed ring; 10. First fastening knob; 11. Second fastening knob; 12. Ball; 13. Magnet; 14. Measuring reference beam; 15. Mounting groove. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 6This utility model provides a technical solution: an adjustable three-point support frame for high-speed railway subgrade testing, including an installation mechanism, a support rod 3, and a measuring arm. The installation mechanism includes a fixed base 1 and a limiting frame 2. The top of the fixed base 1 has an installation groove 15. The support rod 3 is L-shaped. A ball 12 is fixedly installed at one end of the support rod 3 corresponding to the position of the installation groove 15. One end of the limiting frame 2 is slidably installed inside the bottom end of the fixed base 1, and the top end of the limiting frame 2 is limited and installed outside the ball 12. The measuring arm is rotatably installed at the top end of the support rod 3. The measuring arm includes an installation plate 8 and a fixing ring 9. The fixing ring 9 is fixedly connected to one end of the installation plate 8. A reinforcing sleeve 6 is fixedly installed on the outer side of the upper end of the support rod 3. This three-point support frame is an integrated structure, and the support rod 3 can be quickly disassembled and installed by adjusting the movement of the limiting frame 2. The operation is simple and convenient, which can improve the practicality of the three-point support frame.

[0024] In this embodiment, the sphere 12 is snapped into the inside of the mounting groove 15. A spring is fixedly installed between the inner end of the limiting frame 2 and the inner wall of the fixing seat 1. The limiting frame 2 is U-shaped, and a groove is provided on the bottom wall of the upper end of the limiting frame 2. The top of the sphere 12 is snapped into the inside of the groove. The spring is a compression spring, and there is spring force between the limiting frame 2 and the fixing seat 1. Under the action of the spring force, the limiting frame 2 is snapped into the top of the sphere 12 through the groove. This facilitates the fixation of the sphere 12 through the cooperation of the fixing seat 1 and the limiting frame 2, which can improve the stability of the sphere 12 and facilitate the fixation of the support rod 3.

[0025] In this embodiment, a connecting rod 4 is fixedly connected between the support rods 3 on the front and rear sides. A fixing rod 5 is vertically fixedly installed at the middle position of the bottom of the connecting rod 4. The connecting rod 4 can fix the support rods 3 together, and the fixing rod 5 can provide internal support for the support rods 3 and the connecting rod 4, so as to keep the measuring arm in a horizontal state and facilitate the subsequent installation of the displacement sensor.

[0026] In this embodiment, a fixing plate 7 is fixedly installed on the outer wall of the front and rear reinforcing sleeves 6. A magnet 13 is fixedly installed inside a section of the fixing plate 7 on both sides. One end face of the fixing plate 7 on both sides and one end of the magnet 13 are in the same vertical plane. A measuring reference beam 14 is attached to one side of the fixing plate 7 on both sides. The fixing plate 7 and the magnet 13 can be used to position the measuring reference beam 14, which makes it convenient to contact the measuring rod of the displacement sensor with the top of the measuring reference beam 14, and facilitates the detection of settlement.

[0027] In this embodiment, the other end of the mounting plate 8 is rotatably mounted on the outer side of the top of the support rod 3. A first fastening knob 10 is screwed into the interior of the other end of the mounting plate 8. The inner end of the first fastening knob 10 is in close contact with the support rod 3. A notch is provided inside one end of the fixing ring 9. A second fastening knob 11 is screwed into the interior of the fixing ring 9 on both the front and rear sides. The fixing ring 9 is located above the measuring reference beam 14. By rotating the first fastening knob 10, the mounting plate 8 and the fixing ring 9 can be rotated around the top of the support rod 3. The displacement sensor can be fixedly installed inside the fixing ring 9 by the second fastening knob 11, which facilitates the adjustment of the fixing ring 9 and the displacement sensor installed inside it, so that the measuring rod of the displacement sensor can contact the top of the measuring reference beam 14.

[0028] When using this adjustable high-speed railway subgrade detection three-point support frame, the fixed seat 1 is fixed to both sides of the top center of the bearing plate by welding or bonding. The setting of the fixed seat 1 does not affect the installation of the pressure sensor and pressure cylinder. Pull the limiting frame 2 to one side so that the top of the limiting frame 2 moves away from the top of the mounting groove 15. The inner end of the limiting frame 2 interacts with the fixed seat 1 to compress the spring. One end of the support rod 3 and the ball 12 are respectively installed in the mounting groove 15 on the top of the fixed seat 1 on both sides. The bottom end of the support rod 3 is flattened. The support rod 3 drives the fixed rod 5 to contact and support the top of the bearing plate through the connecting rod 4. Release The limiting bracket 2 moves its top end toward the top of the ball 12 under the elastic force of the spring, and is engaged with the top of the ball 12 through a groove, facilitating the installation and limiting of the support rod 3 through the ball 12, thereby improving the stability of the three-point support frame. Support brackets are installed at both ends of the measuring reference beam 14, and the measuring reference beam 14 is adjusted to be level using a level. Simultaneously, both ends of the measuring reference beam 14 are respectively in contact with the fixing plates 7 on the front and rear sides and the magnets 13, facilitating the positioning of the measuring reference beam 14 through the fixing plates 7 and the magnets 13. The mounting plate 8 and the fixing ring 9 are rotated at the upper end of the support rod 3, and the fixing ring 9... Adjust the device to be directly above the measuring reference beam 14 and tighten the first fastening knob 10 to secure the fixing ring 9 and the mounting plate 8. Install the displacement sensor inside the fixing ring 9, and ensure that the measuring rod of the displacement sensor contacts the top of the measuring reference beam 14. Tighten the second fastening knob 11, and the inner end of the second fastening knob 11 presses and fixes the outer wall of the displacement sensor. The support rod 3 and measuring arm of the three-point support frame are an integrated structure, which facilitates quick installation and disassembly of the three-point support frame through the mounting mechanism such as the fixing seat 1 and the limiting frame 2. The operation is simple and convenient. When the pressure cylinder presses the bearing plate, the bearing plate presses the high-speed railway subgrade, and the bearing plate drives the displacement sensor to descend through the three-point support frame. The measuring rod of the displacement sensor is pressed and moved under the action of the measuring reference beam 14, which facilitates the measurement of the settlement of the bearing plate and the subsequent calculation of the subgrade coefficient of the high-speed railway subgrade, thereby improving the practicality of the three-point support frame.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable three-point support frame for railway track inspection, comprising a mounting mechanism, a support rod (3) and a measuring arm, characterized in that, The installation mechanism includes a fixed base (1) and a limiting frame (2). The top of the fixed base (1) is provided with an installation groove (15). The support rod (3) is L-shaped. One end of the support rod (3) is fixedly provided with a ball (12) at the position corresponding to the installation groove (15). One end of the limiting frame (2) is limited and slidably installed inside the bottom end of the fixed base (1). The top end of the limiting frame (2) is limited and set outside the ball (12). The measuring arm is limited and rotatably installed at the top end of the support rod (3). The measuring arm includes an installation plate (8) and a fixing ring (9). The fixing ring (9) is fixedly connected to one end of the installation plate (8). A reinforcing sleeve (6) is fixedly provided on the outer side of the upper end of the support rod (3).

2. The adjustable railway track bed detection three-point support frame according to claim 1, characterized in that: The ball (12) is snapped into the inside of the mounting groove (15), and a spring is fixedly installed between the inner end of the limiting frame (2) and the inner wall of the fixing seat (1).

3. The adjustable railway track inspection three-point support frame according to claim 2, characterized in that: The limiting frame (2) is U-shaped, and a groove is provided on the bottom wall of the upper end of the limiting frame (2). The top of the ball (12) is engaged in the inside of the groove.

4. The adjustable railway track inspection three-point support frame according to claim 1, wherein: A connecting rod (4) is fixedly connected between the support rods (3) on the front and rear sides, and a fixing rod (5) is vertically fixedly installed at the middle position of the bottom of the connecting rod (4).

5. The adjustable railway track inspection three-point support frame according to claim 1, wherein: A fixing plate (7) is fixedly installed on the outer wall of the front and rear reinforcing sleeves (6), and a magnet (13) is fixedly installed inside a section of the fixing plate (7) on both sides.

6. The adjustable railway track inspection three-point support frame according to claim 5, characterized in that: One end face of the fixing plate (7) on both sides and one end of the magnet (13) are in the same vertical plane, and a measuring reference beam (14) is attached to one side of the fixing plate (7) on both the front and rear sides.

7. The adjustable railway track inspection three-point support frame according to claim 6, characterized in that: The other end of the mounting plate (8) is rotatably mounted on the outer side of the top of the support rod (3). The other end of the mounting plate (8) is screwed with a first fastening knob (10). The inner end of the first fastening knob (10) is in close contact with the support rod (3).

8. The adjustable railway track inspection three-point support frame according to claim 7, characterized in that: The fixed ring (9) has a notch inside one end, and a second fastening knob (11) is screwed into the interior of the fixed ring (9) on both the front and rear sides. The fixed ring (9) is located above the measuring reference beam (14).

Images