Concrete pole stress testing device

Abstract

The utility model relates to the technical field of testing devices, in particular to a concrete pole stress testing device which comprises a first bottom plate and a second bottom plate which are fixedly installed on the ground through expansion bolts, and the top face of the first bottom plate is fixedly connected with a clamping seat poured by concrete. The concrete pole clamping device has the advantages that a concrete pole body is placed between the clamping frames, and the clamping frames are driven by the first hydraulic cylinders to clamp and fix one end of a pole; and then the movable frame slides to the position below the electric pole detection end, the locking bolts are unscrewed according to the height of the electric pole, the height of the adjusting plate in the adjusting frame is adjusted, and the clamp base and the upper clamp are attached to the surface of the electric pole and fixed through the bolts. At the moment, the clamp seat is connected with the tension sensor through the steel wire rope to form a stable supporting and tension transmission structure. According to the design, additional stress generated by the electric pole due to the gravity of the electric pole is avoided, it is ensured that the electric pole is in a horizontal stable state in the testing process, and the accuracy of stress detection data is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a stress testing device for cement poles. Background Technology

[0002] The cement pole stress testing device is a key piece of equipment in the power engineering field used to assess the structural safety of cement poles. It is primarily used to detect the stress distribution and load-bearing capacity of the pole under actual working conditions. Its core function is to determine whether there are structural defects or performance risks by simulating the axial pressure, bending moment, and torque loads that the pole experiences during service, combined with stress data collected by sensors. The device typically consists of a loading system, a stress measurement system, a displacement monitoring module, and a control unit: the loading system applies loads to the pole via hydraulic or mechanical means; the stress measurement system uses sensors such as strain gauges and stress meters to capture changes in internal stress within the pole; and the displacement monitoring module simultaneously records the pole's deformation data. During the production process, the testing device can be used for quality sampling inspections of cement poles to ensure that products meet design standards; during the operation and maintenance phase, regular inspections of in-service poles can promptly detect stress anomalies caused by aging, corrosion, or external damage, providing data support for the safe operation of power infrastructure.

[0003] Current mainstream cement pole stress testing devices generally adopt a "one-end clamping, one-end pulling" loading method, that is, fixing one end of the pole with clamping components and applying load to the other end with pulling components. However, this structural design has a significant drawback: during the test, the clamped end of the pole is suspended in the air. Due to the lack of additional support structure, the pole's own weight will cause the tested end to sag. This additional stress caused by gravity not only interferes with the accuracy of the test data but may also cause the stress distribution to deviate from the actual working conditions, leading to biased test results. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a stress testing device for cement poles to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a stress testing device for cement poles, comprising a first base plate and a second base plate fixedly installed on the ground by expansion bolts. A concrete clamping seat is fixedly connected to the top surface of the first base plate. Mounting plates are cast in concrete on both sides of the clamping seat. A first hydraulic cylinder is fixedly connected to the outer side of each mounting plate. A clamping frame is fixedly connected to the output end of each first hydraulic cylinder. A cement pole body is disposed between the two clamping frames. A U-shaped frame is fixedly connected to the top surface of the second base plate, and the inner wall of the U-shaped frame is fixedly connected to... A second hydraulic cylinder is connected, and an electric winch is fixedly connected to the output end of the second hydraulic cylinder. A steel wire rope is fixedly connected to the drive part of the electric winch. A tension sensor is fixedly connected to the end of the steel wire rope away from the electric winch. A movable frame is slidably connected to the top surface of the second base plate. An adjustment frame is fixedly connected to the top surface of the movable frame. An adjustment plate is slidably connected to the inner wall of the adjustment frame. A clamp seat is fixedly connected to the top of the adjustment plate. An upper clamp is fixedly installed on the top of the clamp seat by bolts. The clamp seat and the upper clamp are connected between the main body clamp seat and the upper clamp seat of the cement pole. The clamp seat is fixedly connected to the detection end of the tension sensor by a steel wire rope.

[0007] Preferably, one side of the adjustment frame is threaded with a locking bolt, and the screw portion of the locking bolt is in contact with the adjustment plate.

[0008] Preferably, from any of the above solutions, T-shaped clamping plates are fixedly connected to both the left and right sides of the upper clamp, and both T-shaped clamping plates are slidably connected to the clamping seat.

[0009] Preferably, in any of the above embodiments, a guide rod is fixedly connected to the bottom surface of the clamp seat, a guide sleeve is fixedly connected to the top surface of the movable frame, and the guide rod and the guide sleeve are slidably connected.

[0010] Preferably, in any of the above solutions, the bottom surface of the electric winch is fixedly connected with a plurality of symmetrically arranged limiting plates, and the plurality of limiting plates are slidably connected to the U-shaped frame.

[0011] Preferably, in any of the above solutions, each clamping frame has two symmetrically arranged connecting rods fixedly connected to the side near the first hydraulic cylinder, the first hydraulic cylinder is located between the two connecting rods, and both connecting rods are slidably connected to the mounting plate.

[0012] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0013] 1. This device effectively solves the problem of pole sagging at the testing end by using a support structure consisting of a movable frame, an adjusting frame, and a clamp seat. During testing, the main body of the cement pole is first placed between the clamping frames, and the clamping frames are driven by the first hydraulic cylinder to clamp and fix one end of the pole. Then, the movable frame is slid to below the pole testing end, and the locking bolts are loosened according to the pole height. The height of the adjusting plate within the adjusting frame is adjusted so that the clamp seat and the upper clamp are in contact with the pole surface and fixed with bolts. At this time, the clamp seat is connected to the tension sensor through a steel wire rope, forming a stable support and tension transmission structure. This design avoids the additional stress generated by the pole's own weight, ensuring that the pole remains horizontally stable during the test and significantly improving the accuracy of stress detection data.

[0014] 2. The device optimizes the testing process and enhances structural reliability through multiple limiting and sliding structural designs. During the loading phase, the limiting plate on the bottom of the electric winch slides with the U-shaped frame to ensure the stability of the tension direction; the clamping frame slides with the mounting plate via a connecting rod, ensuring that the thrust of the first hydraulic cylinder is evenly transmitted to the pole. Simultaneously, the guide rod on the bottom of the clamp seat engages with the guide sleeve on the top of the moving frame, facilitating quick adjustment of the support position; the T-shaped clamp plate of the upper clamp slides with the clamp seat, simplifying the installation and disassembly steps of the clamp. These structural elements work together to reduce pre-test debugging time and avoid measurement errors caused by component movement, enabling operators to complete stress testing of cement poles more efficiently and safely. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the assembly of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the clamping base of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the electric winch of this utility model;

[0018] Figure 4 This is an exploded structural diagram of the clamp seat of this utility model.

[0019] In the diagram: 1-First base plate, 2-Second base plate, 3-Clamping seat, 4-Mounting plate, 5-First hydraulic cylinder, 6-Clamping frame, 7-Main body of cement pole, 8-U-shaped frame, 9-Second hydraulic cylinder, 10-Electric winch, 11-Wire rope, 12-Moving frame, 13-Adjusting frame, 14-Adjusting plate, 15-Clamping seat, 16-Upper clamp, 17-Locking bolt, 18-T-shaped clamping plate, 19-Guide rod, 20-Guide sleeve, 21-Limiting plate, 22-Connecting rod, 23-Tension sensor. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0021] like Figures 1 to 4 As shown, a stress testing device for cement poles includes a first base plate 1 and a second base plate 2 fixedly installed on the ground by expansion bolts. A concrete clamping seat 3 is fixedly connected to the top surface of the first base plate 1. Mounting plates 4 are cast in concrete on both sides of the clamping seat 3. A first hydraulic cylinder 5 is fixedly connected to the outer side of each mounting plate 4. A clamping frame 6 is fixedly connected to the output end of each first hydraulic cylinder 5. A cement pole body 7 is positioned between two clamping frames 6. A U-shaped frame 8 is fixedly connected to the top surface of the second base plate 2. A second hydraulic cylinder 9 is fixedly connected to the inner wall of the U-shaped frame 8. The output end of the second hydraulic cylinder 9 is fixedly... An electric winch 10 is fixedly connected to the main body of the cement pole 7. A steel wire rope 11 is fixedly connected to the drive unit of the electric winch 10. A tension sensor 23 is fixedly connected to the end of the steel wire rope 11 away from the electric winch 10. A movable frame 12 is slidably connected to the top surface of the second base plate 2. An adjustment frame 13 is fixedly connected to the top surface of the movable frame 12. An adjustment plate 14 is slidably connected to the inner wall of the adjustment frame 13. A clamp seat 15 is fixedly connected to the top of the adjustment plate 14. An upper clamp 16 is fixedly installed on the top of the clamp seat 15 by bolts. The clamp seat 15 and the upper clamp 16 are connected between the main body of the cement pole 7. The clamp seat 15 is fixedly connected to the detection end of the tension sensor 23 by a steel wire rope.

[0022] As an optional technical solution of this utility model, a locking bolt 17 is threadedly connected to one side of the adjustment frame 13. The screw part of the locking bolt 17 is in contact with the adjustment plate 14. When it is necessary to adjust the position of the clamp seat 15 according to the actual height of the cement pole body, simply loosen the locking bolt 17 to flexibly adjust the height of the adjustment plate 14 in the adjustment frame 13. After adjusting to the appropriate position, tighten the locking bolt 17 to lock the adjustment plate 14 securely, ensuring that the clamp seat 15 remains fixed during the stress test and preventing the test accuracy from being affected by loosening.

[0023] As an optional technical solution of this utility model, T-shaped clamping plates 18 are fixedly connected to both the left and right sides of the upper clamp 16. Both T-shaped clamping plates 18 are slidably connected to the clamping seat 15. During installation, the T-shaped clamping plates 18 are simply pushed into the corresponding grooves of the clamping seat 15 to quickly complete the positioning of the upper clamp 16. Then, it can be tightly clamped to the main body of the cement pole by fixing with bolts. Disassembly can be performed by reversing the operation. This design simplifies the operation process, improves the assembly efficiency of the testing device, and also ensures the stability and reliability of the connection between the upper clamp 16 and the clamping seat 15.

[0024] As an optional technical solution of this utility model, a guide rod 19 is fixedly connected to the bottom surface of the clamp seat 15, and a guide sleeve 20 is fixedly connected to the top surface of the moving frame 12. The guide rod 19 and the guide sleeve 20 are slidably connected. When it is necessary to adjust the horizontal position of the clamp seat 15 to adapt to the main body of cement poles of different lengths, the cooperation between the guide rod 19 and the guide sleeve 20 can ensure that the clamp seat 15 slides smoothly, avoids deviation or shaking, and enables the clamp seat 15 to move quickly and accurately to the required position. It also remains stable during the test, which enhances the reliability of the entire support structure and improves the accuracy of the stress test results.

[0025] As an optional technical solution of this utility model, the bottom surface of the electric winch 10 is fixedly connected with several symmetrically arranged limiting plates 21. The limiting plates 21 are all slidably connected to the U-shaped frame 8. When the electric winch 10 applies tension to the main body of the cement pole for stress testing, the sliding cooperation between the limiting plates 21 and the U-shaped frame 8 can prevent the electric winch 10 from deviating or shaking, so that the tension is transmitted evenly and stably to the main body of the cement pole along the preset direction, avoiding changes in the direction of tension or uneven force due to changes in the position of the electric winch 10, thereby improving the reliability of the stress test data.

[0026] As an optional technical solution of this utility model, each clamping frame 6 has two symmetrically arranged connecting rods 22 fixedly connected to the side near the first hydraulic cylinder 5. The first hydraulic cylinder 5 is located between the two connecting rods 22, and both connecting rods 22 are slidably connected to the mounting plate 4. This structural design allows the thrust of the first hydraulic cylinder 5 to be transmitted more evenly to the clamping frame 6. When clamping and fixing the main body of the cement pole, the sliding cooperation between the two connecting rods 22 and the mounting plate 4 plays a guiding and limiting role, ensuring that the clamping frame 6 moves smoothly under the drive of the first hydraulic cylinder 5.

[0027] A stress testing device for cement poles, the working principle of which is as follows:

[0028] 1): During testing, the main body 7 of the cement pole is placed between the clamping frames 6, and the clamping frames 6 are driven by the first hydraulic cylinder 5 to clamp and fix one end of the pole.

[0029] 2): Slide the moving frame 12 to below the pole detection end, loosen the locking bolt 17 according to the pole height, adjust the height of the adjusting plate 14 in the adjusting frame 13, so that the clamp seat 15 and the upper clamp 16 are in contact with the pole surface and fixed with bolts.

[0030] 3) The clamp 15 is connected to the tension sensor 23 via a steel wire rope, forming a stable support and tension transmission structure. This design avoids the additional stress caused by the pole's own weight, ensuring that the pole remains horizontally stable during the test.

[0031] In summary, this cement pole stress testing device effectively solves the problem of the pole drooping at the testing end by setting up a support structure consisting of a movable frame 12, an adjusting frame 13, and a clamp seat 15. During testing, the main body 7 of the cement pole is first placed between the clamping frames 6, and the clamping frames 6 are driven by the first hydraulic cylinder 5 to clamp and fix one end of the pole. Then, the movable frame 12 is slid below the testing end of the pole, and the locking bolt 17 is loosened according to the height of the pole. The height of the adjusting plate 14 within the adjusting frame 13 is adjusted so that the clamp seat 15 and the upper clamp 16 are in contact with the surface of the pole and fixed with bolts. At this time, the clamp seat 15 is connected to the tension sensor 23 through a steel wire rope, forming a stable support and tension transmission structure. This design avoids the additional stress generated by the pole's own weight, ensures that the pole is in a horizontal and stable state during the test, and greatly improves the accuracy of stress detection data. Through the design of multiple limiting and sliding structures, the test operation process is optimized and the structural reliability is enhanced. During the loading process, the limiting plate 21 on the bottom surface of the electric winch 10 slides with the U-shaped frame 8 to ensure the stability of the tension direction; the clamping frame 6 is slidably connected to the mounting plate 4 via the connecting rod 22, so that the thrust of the first hydraulic cylinder 5 is evenly transmitted to the pole. At the same time, the guide rod 19 on the bottom surface of the clamp seat 15 cooperates with the guide sleeve 20 on the top surface of the moving frame 12, which facilitates quick adjustment of the support position; the T-shaped clamping plate 18 of the upper clamp 16 is slidably connected to the clamp seat 15, simplifying the installation and disassembly steps of the clamp. These structures work together to reduce the debugging time before testing and avoid measurement errors caused by component shaking, enabling operators to complete the stress testing of cement poles more efficiently and safely.

Claims

1. A stress testing device for cement poles, characterized in that: The system includes a first base plate and a second base plate fixed to the ground by expansion bolts. A concrete clamping seat is fixedly connected to the top surface of the first base plate. Mounting plates are cast in concrete on both sides of the clamping seat. A first hydraulic cylinder is fixedly connected to the outer side of each mounting plate. A clamping frame is fixedly connected to the output end of each first hydraulic cylinder. A concrete pole body is positioned between two clamping frames. A U-shaped frame is fixedly connected to the top surface of the second base plate. A second hydraulic cylinder is fixedly connected to the inner wall of the U-shaped frame. The output of the second hydraulic cylinder... An electric winch is fixedly connected to one end of the pole. A steel wire rope is fixedly connected to the drive unit of the electric winch. A tension sensor is fixedly connected to the end of the steel wire rope away from the electric winch. A movable frame is slidably connected to the top surface of the second base plate. An adjustment frame is fixedly connected to the top surface of the movable frame. An adjustment plate is slidably connected to the inner wall of the adjustment frame. A clamp seat is fixedly connected to the top of the adjustment plate. An upper clamp is fixedly installed on the top of the clamp seat by bolts. The clamp seat and the upper clamp are connected to the main body clamp seat of the cement pole. The clamp seat is fixedly connected to the detection end of the tension sensor by a steel wire rope.

2. The stress testing device for cement poles according to claim 1, characterized in that: A locking bolt is threaded onto one side of the adjustment frame, and the screw portion of the locking bolt is in contact with the adjustment plate.

3. The stress testing device for cement poles according to claim 2, characterized in that: Both sides of the upper clamp are fixedly connected to T-shaped clamping plates, and both T-shaped clamping plates are slidably connected to the clamping plate seat.

4. The stress testing device for cement poles according to claim 3, characterized in that: A guide rod is fixedly connected to the bottom surface of the clamp seat, and a guide sleeve is fixedly connected to the top surface of the movable frame. The guide rod and the guide sleeve are slidably connected.

5. The stress testing device for cement poles according to claim 4, characterized in that: The bottom surface of the electric winch is fixedly connected with several symmetrically arranged limiting plates, and each of the limiting plates is slidably connected to the U-shaped frame.

6. The stress testing device for cement poles according to claim 5, characterized in that: Each clamping frame has two symmetrically arranged connecting rods fixedly connected to the side near the first hydraulic cylinder. The first hydraulic cylinder is located between the two connecting rods, and both connecting rods are slidably connected to the mounting plate.

Images