Bridge column pile critical dynamic load test equipment

Abstract

The utility model discloses bridge column pile critical dynamic load test equipment, which relates to the technical field of bridge construction, and comprises a device main body, a first inhaul cable, a second inhaul cable, a connecting block and a sliding block, the bottom of the device main body is provided with rollers, and the top of the device main body is provided with a first winch; the first winch is connected with the connecting block through a first inhaul cable, a testing ball is arranged at the bottom of the connecting block, the second winch drives the second inhaul cable to be wound, then the second inhaul cable can pull the testing ball to move backwards, the testing ball is attracted and fixed by the electromagnet, and the testing ball is clamped and fixed by disconnecting a buckle for connecting the testing ball with the second inhaul cable. The electromagnet power supply is switched off, the test ball loses magnetism and is fixed and swings through the two first inhaul cables, so that the surface of the column pile is impacted for testing, the distance between the two sides of the test ball is controlled through the two first inhaul cables with the same length in the swinging process of the test ball, and the test ball is prevented from deviating from a test point in the swinging process.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a critical dynamic load testing device for bridge column piles. Background Technique

[0002] There are three types of dynamic loads, including impact loads: the action time is extremely short and irregular, vibration loads: having periodicity, and complex loads. Bridge column piles need to be subjected to impact loads to ensure that the quality meets the standards. After retrieval, the patent with the authorization number of CN221148377U discloses a building curtain wall impact resistance testing device. Although the device immediately starts the pneumatic telescopic rod after the test ball collides and rebounds with the building curtain wall, so that the protection plate rises quickly, and then the test ball and the building curtain wall can be separated, avoiding the repeated impact of the test ball on the building curtain wall and affecting its test accuracy, improving its practicability. However, when the test ball impacts the test point, it swings through a cable. Since the cable swings when the test ball swings, the impact point of the test ball is not easy to control, resulting in the impact point being prone to deviation, thereby affecting the test accuracy. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a critical dynamic load testing device for bridge column piles, which solves the problem that the impact point of the existing test device is not easy to control during the impact test, resulting in easy errors in test data as mentioned in the background technique.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A critical dynamic load testing device for bridge column piles includes a device main body, a first cable, a second cable, a connecting block and a slider. The bottom of the device main body is installed with rollers, and the top of the device main body is installed with a first winch. The first winch is connected to the connecting block through the first cable. A test ball is arranged at the bottom of the connecting block. The other end of the test ball is connected to one end of the second cable, and the other end of the second cable is connected to the second winch, and the second winch is installed at the bottom of the other end of the device main body. The driving device and the electromagnet of this device are both electrically connected to an external controller.

[0005] Preferably, there are two first cables, and the two first cables are respectively connected to both ends of the top of the connecting block. The lengths of the two first cables are equal, and each first cable corresponds to a first winch. When the test ball deviates to one side during the swinging process, the first cable on the other side will hold the test ball to prevent the test ball from deviating.

[0006] Preferably, a buckle is provided at the bottom of the connecting block, and the bottom of the connecting block is connected to the top of the test ball through the buckle. One side of the test ball is connected to one end of the second cable through another buckle, so that the test ball can be easily replaced through the buckle, and test balls of different weights and sizes can be replaced according to actual measurements.

[0007] Preferably, the second cable is slidably connected to the surface of the pulley. The pulley is installed at one end of the bottom of the slider, and an electromagnet is provided on one side of the pulley. The electromagnet is fixedly installed at the bottom of the slider. The inside of the slider is threadedly connected to the threaded rod. One end of the threaded rod is rotatably connected to the fixed block, and the fixed block is welded to the surface of the device body. The other end of the threaded rod is sleeved outside the output end of the driving motor. The driving motor is installed on the surface of the device body. By driving the threaded rod to rotate by the driving motor, the slider can be driven to move back and forth while the threaded rod rotates, thereby adjusting the fixing position of the electromagnetic sticker on the test ball.

[0008] Preferably, both ends of the slider are in sliding contact with the outer wall of the sliding rod. One end of the sliding rod is welded to the fixed block, and the other end of the sliding rod is welded to the device body. The two sliding rods can support the slider and enable the slider to move linearly and horizontally at the same time.

[0009] The utility model provides a critical dynamic load testing device for bridge column piles, which has the following beneficial effects:

[0010] (1) When the device is in use, by moving the device to one side of the column pile, the second cable is wound by the second winch, and then the second cable can pull the test ball to move backward, so that the test ball is adsorbed and fixed by the electromagnet. By disconnecting the buckle connecting the test ball and the second cable, and then disconnecting the power supply of the electromagnet, the test ball loses magnetic fixation and swings through the two first cables, thereby hitting the surface of the column pile for testing. During the swinging process of the test ball, the distances on both sides are controlled by the two first cables with equal lengths, avoiding the test ball deviating from the test point during the swinging process.

[0011] (2) For the critical dynamic load testing device for bridge column piles, the first cables are wound synchronously by the two first winches, and then the threaded rod is rotated by the driving motor. While the threaded rod rotates, the slider can be driven to move back and forth, thereby adjusting the fixing position of the electromagnetic sticker on the test ball, which is beneficial to adjusting the height of the impact point of the test ball and improving the adjustability of the device.

[0012] Therefore, the problem that the impact point of the test ball is not easy to control during the impact test of the existing test device, resulting in easy error in test data, is solved. Description of the Drawings

[0013] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 Schematic diagram of the electromagnet structure of the present utility model;

[0015] Figure 3 Front view structural schematic diagram of the present utility model;

[0016] Figure 4 Schematic diagram of the test ball structure of the present utility model;

[0017] Figure 5 Schematic diagram of the slider structure of the present utility model.

[0018] In the figure, 1 is the device main body; 2 is the roller; 3 is the first winch; 4 is the first cable; 5 is the test ball; 6 is the second cable; 7 is the second winch; 8 is the connecting block; 9 is the driving motor; 10 is the threaded rod; 11 is the fixed block; 12 is the sliding rod; 13 is the slider; 14 is the electromagnet; 15 is the pulley. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1: A critical dynamic load test device for bridge column piles, including a device main body 1, a first cable 4, a second cable 6, a connecting block 8, and a slider 13. A roller 2 is installed at the bottom of the device main body 1, and a first winch 3 is installed at the top of the device main body 1. The first winch 3 is connected to the connecting block 8 through the first cable 4. A test ball 5 is provided at the bottom of the connecting block 8. The other end of the test ball 5 is connected to one end of the second cable 6. The other end of the second cable 6 is connected to the second winch 7, and the second winch 7 is installed at the bottom of the other end of the device main body 1. There are two first cables 4, and the two first cables 4 are respectively connected to both ends of the top of the connecting block 8. The lengths of the two first cables 4 are equal, and each first cable 4 corresponds to a first winch 3. By disconnecting the buckle connecting the test ball 5 and the second cable 6, and then disconnecting the power supply of the electromagnet 14, the test ball 5 loses magnetic fixation and swings through the two first cables 4, thereby hitting the surface of the column pile for testing. During the swinging process of the test ball 5, the distances on both sides are controlled by the two first cables 4 with equal lengths, avoiding the test ball 5 deviating from the test point during the swinging process.

[0021] Embodiment 2: The second cable 6 is slidably connected to the surface of the pulley 15. The pulley 15 is installed at one end of the bottom of the slider 13, and an electromagnet 14 is provided on one side of the pulley 15. The electromagnet 14 is fixedly installed at the bottom of the slider 13. The inside of the slider 13 is threadedly connected to the threaded rod 10. One end of the threaded rod 10 is rotatably connected to the fixed block 11, and the fixed block 11 is welded to the surface of the device main body 1. The other end of the threaded rod 10 is sleeved outside the output end of the driving motor 9. The driving motor 9 is installed on the surface of the device main body 1. Both ends of the slider 13 are in sliding contact with the outer wall of the sliding rod 12. One end of the sliding rod 12 is welded to the fixed block 11, and the other end of the sliding rod 12 is welded to the device main body 1. The first cables 4 are synchronously wound by two first winches 3. Then, the threaded rod 10 is driven to rotate by the driving motor 9. While the threaded rod 10 rotates, the slider 13 can be driven to move back and forth, so as to adjust the fixed position of the electromagnetic sticker on the test ball 5, which is beneficial to adjusting the height of the impact point of the test ball 5 and improving the adjustability of the device.

[0022] Working principle: When the device is in use, the device is moved to one side of the pile. Then, the second cable 6 is wound by the second winch 7. Then, the second cable 6 can pull the test ball 5 to move backward. Then, the test ball 5 is adsorbed and fixed by the electromagnet 14. The buckle connecting the test ball 5 and the second cable 6 is disconnected. Then, the power supply of the electromagnet 14 is disconnected, so that the test ball 5 loses magnetic fixation and swings through the two first cables 4, so as to impact the surface of the pile for testing. During the swinging process of the test ball 5, the distances on both sides are controlled by the two first cables 4 with equal lengths, so as to prevent the test ball 5 from deviating from the test point during the swinging process.

[0023] The 1. device main body; 2. roller; 3. first winch; 4. first cable; 5. test ball; 6. second cable; 7. second winch; 8. connecting block; 9. driving motor; 10. threaded rod; 11. fixed block; 12. sliding rod; 13. slider; 14. electromagnet; 15. pulley of the present utility model are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0024] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0025] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard 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. A critical dynamic load test device for bridge column piles, characterized in that: It includes a device main body (1), a first cable (4), a second cable (6), a connection block (8) and a slider (13). A roller (2) is installed at the bottom of the device main body (1), and a first winch (3) is installed at the top of the device main body (1). The first winch (3) is connected to the connection block (8) through the first cable (4). A test ball (5) is provided at the bottom of the connection block (8). The other end of the test ball (5) is connected to one end of the second cable (6), and the other end of the second cable (6) is connected to the second winch (7), and the second winch (7) is installed at the bottom of the other end of the device main body (1).

2. The critical dynamic load testing device for bridge column piles according to claim 1, wherein: There are two first cables (4), and the two first cables (4) are respectively connected to both ends of the top of the connection block (8). The lengths of the two first cables (4) are equal, and each first cable (4) corresponds to a first winch (3).

3. The critical dynamic load testing device for bridge column piles according to claim 1, characterized in that: A buckle is provided at the bottom of the connection block (8), and the bottom of the connection block (8) is connected to the top of the test ball (5) through the buckle. One side of the test ball (5) is connected to one end of the second cable (6) through another buckle.

4. The critical dynamic load testing device for bridge column piles according to claim 1, wherein: The second cable (6) is in sliding connection with the surface of a pulley (15). The pulley (15) is installed at one end of the bottom of the slider (13), and an electromagnet (14) is provided on one side of the pulley (15). The electromagnet (14) is fixedly installed at the bottom of the slider (13). The inside of the slider (13) is in threaded connection with a threaded rod (10). One end of the threaded rod (10) is rotatably connected to a fixed block (11), and the fixed block (11) is welded to the surface of the device main body (1). The other end of the threaded rod (10) is sleeved outside the output end of a driving motor (9), and the driving motor (9) is installed on the surface of the device main body (1).

5. The critical dynamic load testing device for bridge column piles according to claim 1, wherein: Both ends of the slider (13) are in sliding contact with the outer wall of a slide bar (12). One end of the slide bar (12) is welded to the fixed block (11), and the other end of the slide bar (12) is welded to the device main body (1).

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