Load loading device of cantilever bridge fabrication machine

Abstract

The utility model discloses a cantilever bridge fabrication machine load loading device, which belongs to the technical field of bridge construction equipment performance detection, and comprises a cantilever bridge fabrication machine, a hydraulic rod used for testing the load force of the cantilever bridge fabrication machine is fixedly arranged at the bottom of the cantilever bridge fabrication machine, and the hydraulic rod is fixed by adjusting the angle of a rotating block and driving a top block to rotate by a driving motor II. The hydraulic rod shakes at different amplitudes and frequencies; meanwhile, a first driving motor enables a sliding plate to move up and down, the flow speed of hydraulic oil is controlled, a hydraulic rod shakes, and various complex working conditions possibly encountered in the bridge building and using process can be highly restored, such as wind power, earthquake force and unbalanced loads in the construction process; therefore, the anti-seismic performance and the structural stability of the cantilever bridge fabrication machine are detected more comprehensively and accurately, more reliable data support is provided for performance evaluation of the cantilever bridge fabrication machine, and engineering hidden dangers and safety accidents caused by inaccurate detection are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of performance detection of bridge construction equipment, in particular to a load loading device for a cantilever bridge-building machine. Background Art

[0002] In modern bridge construction, cantilever bridge-building machines are widely used in the construction of large-span bridges due to their unique construction advantages. During the construction process, cantilever bridge-building machines need to bear various complex loads, including their own structural weight, the weight of newly poured concrete, the weight of construction equipment and personnel, and the forces generated by natural factors such as wind loads and earthquake forces. The size and distribution of these loads directly affect the structural stability and construction safety of the cantilever bridge-building machine.

[0003] At present, the traditional cantilever bridge-building machine performance testing method is relatively simple, mostly relying on experience and a small amount of on-site measurement. For example, when testing the load-bearing capacity of the cantilever bridge-building machine, it is often simply observed whether the cantilever bridge-building machine has obvious deformation or abnormal sound under a certain construction load, and lacks accurate measurement and analysis of key performance indicators such as its internal stress distribution and dynamic response. This testing method has great limitations and cannot accurately evaluate the performance of the cantilever bridge-building machine under various complex working conditions;

[0004] As bridge construction develops towards larger spans and higher difficulty, the performance requirements for cantilever bridge-building machines are becoming increasingly higher. If a cantilever bridge-building machine fails due to insufficient performance during construction, it will not only cause project delays and increase construction costs, but may also cause serious safety accidents and threaten the lives of construction workers. Therefore, the utility model provides a cantilever bridge-building machine load loading device to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a load loading device for a cantilever bridge-building machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a cantilever bridge-building machine, a hydraulic rod for testing the load force of the cantilever bridge-building machine is fixedly installed at the bottom of the cantilever bridge-building machine, the top of the hydraulic rod is slidably connected to a clamping structure for fixing the hydraulic rod under the cantilever bridge-building machine, the top of the hydraulic rod is fixedly connected to a top block, the top of the top block is rotatably connected to a rotating block, and the shaking amplitude of the hydraulic rod is adjusted by adjusting the angle of the rotating block, a storage box for storing hydraulic oil is fixedly installed on one side of the hydraulic rod, the inner cavity of the storage box is slidably connected to a sliding plate for adjusting the internal volume of the storage box, and the sliding plate slides up and down in the inner cavity of the storage box to control the oil outlet speed inside the hydraulic rod, so that the hydraulic rod shakes to simulate more complex stress conditions.

[0007] Furthermore, the inner cavity of the rotating block is rotatably connected to a screw for fixing the angle of the rotating block, the top of the rotating block is fixedly connected to a connecting rod, the outer wall of the connecting rod is fixedly connected to a spring for shock absorption, the bottom of the top block is fixedly connected to a square fixing plate, and the inner cavity of the square fixing plate is fixedly installed with a motor 2 for driving the top block to rotate.

[0008] Furthermore, the inner cavity of the storage box is rotatably connected to a rotating plate, one side of the rotating plate is rotatably connected to a pull rod for pulling the sliding plate up and down, the top of the sliding plate is fixedly connected to a clamping block, and the clamping block is rotatably connected to the outer wall of the pull rod through a bearing.

[0009] Furthermore, the clamping structure includes a base shell, which is fixedly connected to the top of the hydraulic rod. Both ends of the base shell are slidably connected to two bent plates, and are clamped on the inner mold longitudinal beam or outer mold longitudinal beam of the cantilever bridge building machine through the two bent plates to fix the position of the hydraulic rod.

[0010] Furthermore, the inner cavity of the base shell is rotatably connected to a gear, and the inner cavity of the base shell is slidably connected to two racks for pushing the two bent plates to slide simultaneously, and the two racks are symmetrically distributed at both ends of the gear and meshed with the gear.

[0011] Furthermore, the bottom of the hydraulic rod is fixedly connected to a support plate, the inner cavity of the support plate is rotatably connected to a threaded nail, and the threaded nail penetrates the support plate to fix the hydraulic rod to a relatively hard ground foundation, a special test platform or other stable support structure under the cantilever bridge-building machine.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By adjusting the angle of the rotating block and fixing it, the driving motor 2 drives the top block to rotate, causing the hydraulic rod to shake with different amplitudes and frequencies; at the same time, the driving motor 1 moves the sliding plate up and down to control the flow rate of the hydraulic oil, causing the hydraulic rod to shake. This can highly restore various complex working conditions that may be encountered during bridge construction and use, such as wind force, earthquake force, and unbalanced loads during construction, and thus more comprehensively and accurately detect the seismic performance and structural stability of the cantilever bridge-building machine, providing more reliable data support for the performance evaluation of the cantilever bridge-building machine, and effectively avoiding engineering hazards and safety accidents caused by inaccurate detection.

[0014] 2. By setting the bent plate in the clamping structure, the outer wall of the cantilever bridge machine can be quickly clamped through the transmission of gears and racks, which is convenient for the installer to flexibly adjust the position of the hydraulic rod within a certain range to meet different test requirements. At the same time, the support plate and threaded nails at the bottom of the hydraulic rod can firmly fix the hydraulic rod on the bearing foundation to ensure that the hydraulic rod will not move during the test. This flexible fixing and installation method not only improves the efficiency of the test, but also ensures the stability of the test process, allowing the entire test work to proceed more smoothly and reducing the test cost and time consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the whole load loading device of a cantilever bridge-building machine;

[0016] Figure 2 This is a structural diagram of a hydraulic rod in a load loading device of a cantilever bridge-building machine;

[0017] Figure 3 It is a structural cross-sectional view of a rotating plate in a load loading device of a cantilever bridge-building machine;

[0018] Figure 4 This is a structural diagram of a bent plate in a load loading device of a cantilever bridge-building machine.

[0019] In the figure: 1. cantilever bridge-building machine; 2. hydraulic rod; 3. clamping structure; 4. top block; 5. rotating block; 6. storage box; 7. sliding plate; 201. support plate; 202. threaded nail; 301. base shell; 302. bent plate; 303. gear; 304. rack; 501. connecting rod; 502. square fixing plate; 503. motor two; 504. screw; 505. circular shell one; 506. circular shell two; 507. spring; 601. rotating plate; 602. pull rod; 603. clamping block; 604. extension shell; 605. motor one; 607. oil inlet pipe; 608. oil supply pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1: Please refer to Figure 1 to Figure 4A cantilever bridge-building machine load loading device comprises a cantilever bridge-building machine 1, a hydraulic rod 2 for testing the load force of the cantilever bridge-building machine 1 is fixedly installed at the bottom of the cantilever bridge-building machine 1, a clamping structure 3 for fixing the hydraulic rod 2 under the cantilever bridge-building machine 1 is slidably connected to the top of the hydraulic rod 2, and the clamping structure 3 can be quickly fixed to the outer wall of the cantilever bridge-building machine 1 or removed from the outer wall of the cantilever bridge-building machine 1, so that the installer can flexibly adjust the position of the hydraulic rod 2 within a certain range, a top block 4 is fixedly connected to the top of the hydraulic rod 2, a rotating block 5 is rotatably connected to the top of the top block 4, and the hydraulic rod 2 can be adjusted by adjusting the angle of the rotating block 5. 2 shaking amplitude, thereby simulating that in the actual bridge construction and use process, the cantilever bridge-building machine 1 may be subjected to forces from different directions, including wind force, earthquake force and unbalanced loads during the construction process, etc., to more realistically test the structural stability and bearing capacity of the cantilever bridge-building machine 1 under various working conditions. A storage box 6 for storing hydraulic oil is fixedly installed on one side of the hydraulic rod 2. The inner cavity of the storage box 6 is slidably connected with a sliding plate 7 for adjusting the internal volume of the storage box 6. The sliding plate 7 slides up and down in the inner cavity of the storage box 6 to control the oil outlet speed inside the hydraulic rod 2, so that the hydraulic rod 2 shakes to simulate more complex force conditions.

[0022] See also Figure 2-3The inner cavity of the rotating block 5 is rotatably connected with a screw 504 for fixing the angle of the rotating block 5, and the screw 504 penetrates the rotating block 5 and is threadedly connected to the inner cavity of the top block 4, so that when the angle of the rotating block 5 needs to be fixed, as the screw 504 is continuously screwed into the top block 4, the pressure applied to the rotating block 5 gradually increases, so that the friction between the rotating block 5 and the top block 4 increases, thereby limiting the rotation of the rotating block 5 and fixing its angle. The top of the rotating block 5 is fixedly connected with a connecting rod 501, and the outer wall of the connecting rod 501 is fixedly connected with a spring 507 for shock absorption. The tops of the connecting rod 501 and the spring 507 are both fixedly connected to the bottom of the clamping structure 3, and the bottom of the top block 4 is fixedly connected with a square fixing plate 502, and the bottom of the square fixing plate 502 is fixedly connected to the top of the hydraulic rod 2. The spring 507 is provided with The four arrays are on the top of the square fixed plate 502, and the inner cavity of the square fixed plate 502 is fixedly installed with a motor 2 503 for driving the top block 4 to rotate. Specifically, the output shaft of the motor 2 503 is fixedly connected to the bottom of the top block 4, and then by driving the motor 2 503 to drive the top block 4 to rotate, if the rotating block 5 is in a tilted state, the top block 4 will apply a lateral force to the hydraulic rod 2 through the tilted rotating block 5, thereby driving the hydraulic rod 2 to shake, and through this shaking effect, the complex external forces that the cantilever bridge-building machine 1 is subjected to in actual work can be more accurately simulated. At the same time, by controlling the speed and direction of the motor 2 503, the hydraulic rod 2 can produce shaking of different frequencies and amplitudes, more realistically restoring the dynamic load borne by the bridge structure, and then comprehensively testing the seismic performance and structural stability of the cantilever bridge-building machine 1.

[0023] More specifically, the top of the square fixed plate 502 is fixedly connected to a circular shell 1 505, and the outer wall of the circular shell 1 505 is rotatably connected to a circular shell 2 506. There are two circular shells 506 in total, and the two circular shells 506 are fixed together by bolts to form a circular shell, which then cooperates with the circular shell 1 505 to form a protective structure, which plays a multi-faceted protective role on the top block 4. The top of a circular shell 2 506 is fixedly connected to the bottom of the clamping structure 3. For example, during the test process, dust, debris, etc. may enter the device and affect the normal operation of the equipment. The circular shell 1 505 and the circular shell 2 506 can block these external debris and prevent them from contacting the top block 4 and the connection parts between the top block 4 and the rotating block 5, etc., to avoid problems such as jamming and wear caused by the entry of debris.

[0024] See also Figure 2-3The inner cavity of the storage box 6 is rotatably connected to a rotating plate 601 through a bearing, and one side of the rotating plate 601 is rotatably connected to a pull rod 602 for pulling the sliding plate 7 up and down through an axle rod, and the top of the sliding plate 7 is fixedly connected to a clamping block 603, and the clamping block 603 is rotatably connected to the outer wall of the pull rod 602 through a bearing. Specifically, an oil inlet pipe 607 is fixedly connected to the bottom of the storage box 6, and an oil supply pipe 608 is fixedly connected to one side of the oil inlet pipe 607, and one end of the oil supply pipe 608 is fixedly connected to the top of the storage box 6, and the other end of the oil supply pipe 608 passes through the square fixed plate 502 and is fixedly connected to the top of the hydraulic rod 2, and the outer wall of the storage box 6 is fixedly connected to an extension shell 604, and the inner cavity of the extension shell 604 is fixedly installed with a The motor 601 rotates 605, and the motor 605 passes through the storage box 6 and is rotatably connected to the rotating plate 601, and then the output shaft of the driving motor 605 drives the rotating plate 601 to rotate, so that the rotating plate 601 pulls the pull rod 602 through the bearing to rotate, and in the process of rotation, drives the sliding plate 7 to move up and down continuously to control the flow rate of the hydraulic oil outflow. The change in flow rate will cause the internal pressure of the hydraulic rod 2 to be unstable, thereby causing the hydraulic rod 2 to shake. In addition, by controlling the motor 605, the moving speed of the sliding plate 7 can be adjusted, and then the shaking frequency of the hydraulic rod 2 can be adjusted, so as to simulate the vibration load borne by the bridge structure under different conditions, and further improve the performance test of the cantilever bridge-building machine 1 under complex stress conditions.

[0025] Example 2: Please refer to Figure 4 , a load loading device for a cantilever bridge-building machine, which differs from Example 1 in that a clamping structure 3 includes a base shell 301, a connecting rod 501 and the top of a circular shell 506 are fixedly connected to the bottom of the base shell 301, the base shell 301 is fixedly connected to the top of a hydraulic rod 2, the bottom of the base shell 301 is fixedly connected to the top of a square fixed plate 502, the bottom of the base shell 301 is fixedly connected to the top of the circular shell 506, and two bent plates 302 are slidably connected to both ends of the base shell 301, and are clamped on the inner mold longitudinal beam or the outer mold longitudinal beam of the cantilever bridge-building machine 1 through the two bent plates 302 to fix the position of the hydraulic rod 2.

[0026] See also Figure 4The inner cavity of the base shell 301 is rotatably connected to the gear 303 through a bearing, and the inner cavity of the base shell 301 is slidably connected to two racks 304 for pushing the two bent plates 302 to slide at the same time. The two racks 304 are fixedly connected to the two bent plates 302 respectively, and the two racks 304 are symmetrically distributed at both ends of the gear 303 and meshingly connected with the gear 303. Specifically, the inner cavity of the base shell 301 is fixedly installed with a motor three for driving the gear 303 to rotate. The motor three is located above the gear 303, and the output shaft of the motor three is fixedly connected to the top of the gear 303. Then, by driving the motor three, when the gear 303 rotates, the rack 304 pushes the bent plate 302 to slide, so that the bent plate 302 is clamped on the outer wall of the cantilever bridge building machine 1 to fix the position of the hydraulic rod 2.

[0027] See also Figure 2 The bottom of the hydraulic rod 2 is fixedly connected to a support plate 201, and the inner cavity of the support plate 201 is rotatably connected to a threaded nail 202, and the threaded nail 202 penetrates the support plate 201 to fix the hydraulic rod 2 to a relatively hard ground foundation, a special test platform or other stable supporting structure under the cantilever bridge-building machine 1. When the threaded nail 202 is screwed into the bearing foundation, the friction and tightening effect of the thread are used to firmly fix the hydraulic rod 2 in the corresponding position, ensuring that the hydraulic rod 2 will not be displaced during the test, thereby ensuring the stability and accuracy of the test.

[0028] Working principle: First, according to the test requirements, the angle of the rotating block 5 on the top of the top block 4 is rotated, and the screw 504 is used to penetrate the rotating block 5 so that it is threadedly connected to the inner cavity of the top block 4. When the angle of the rotating block 5 is fixed, a circular shell 2 506 is fixed to one side of the circular shell 2 506 located at the bottom of the clamping structure 3 with a bolt, and then cooperates with the circular shell 1 505 to form a protective structure, and by driving the motor 3 to rotate the gear 303, the rack 304 is used to push the bent plate 302 to slide, so that the bent plate 302 is clamped on the outer wall of the cantilever bridge-building machine 1 to fix the position of the hydraulic rod 2, and when the threaded nail 202 is used to penetrate the support plate 201 and screwed into the bearing foundation, the friction and tightening effect of the thread are used to firmly fix the hydraulic rod 2 in the corresponding position, and when the hydraulic rod 2 is driven to retract, it is pulled The cantilever bridge-building machine 1 is tested for its load capacity and structural stability. At the same time, the motor 1 605 and the motor 2 503 are driven so that the output shaft of the motor 1 605 drives the rotating plate 601 to rotate, so that the rotating plate 601 pulls the pull rod 602 through the bearing to rotate, and during the rotation, the sliding plate 7 is driven to move up and down continuously to control the flow rate of the hydraulic oil outflow. The change in flow rate will cause the internal pressure of the hydraulic rod 2 to be unstable, thereby causing the hydraulic rod 2 to shake. When the motor 2 503 drives the top block 4 to rotate, if the rotating block 5 is in a tilted state, the top block 4 will apply a lateral force to the hydraulic rod 2 through the tilted rotating block 5, thereby driving the hydraulic rod 2 to shake, thereby more accurately simulating the complex external forces that the cantilever bridge-building machine 1 is subjected to in actual work, and then comprehensively testing the seismic resistance and structural stability of the cantilever bridge-building machine 1.

[0029] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present utility model according to the technical scheme and utility model concept of the present utility model, which should be covered by the protection scope of the present utility model.

Claims

1. A cantilever bridge-building machine load loading device, comprising a cantilever bridge-building machine (1), characterized in that: A hydraulic rod (2) for testing the load force of the cantilever bridge-building machine (1) is fixedly installed at the bottom of the cantilever bridge-building machine (1); the top of the hydraulic rod (2) is slidably connected to a clamping structure (3) for fixing the hydraulic rod (2) below the cantilever bridge-building machine (1); the top of the hydraulic rod (2) is fixedly connected to a top block (4); the top of the top block (4) is rotatably connected to a rotating block (5); and the shaking amplitude of the hydraulic rod (2) is adjusted by adjusting the angle of the rotating block (5); a storage box (6) for storing hydraulic oil is fixedly installed on one side of the hydraulic rod (2); the inner cavity of the storage box (6) is slidably connected to a sliding plate (7) for adjusting the internal volume of the storage box (6); and the sliding plate (7) is used to make the hydraulic rod (2) shake to simulate more complex stress conditions.

2. A cantilever bridge construction machine load loading device according to claim 1, characterized in that: The inner cavity of the rotating block (5) is rotatably connected to a screw (504) for fixing the angle of the rotating block (5); the top of the rotating block (5) is fixedly connected to a connecting rod (501); the outer wall of the connecting rod (501) is fixedly connected to a spring (507) for shock absorption; the bottom of the top block (4) is fixedly connected to a square fixing plate (502); and the inner cavity of the square fixing plate (502) is fixedly installed with a second motor (503) for driving the top block (4) to rotate.

3. A cantilever bridge construction machine load loading device according to claim 2, characterized in that: The inner cavity of the storage box (6) is rotatably connected to a rotating plate (601), one side of the rotating plate (601) is rotatably connected to a pull rod (602) for pulling the sliding plate (7) to move up and down, and the top of the sliding plate (7) is fixedly connected to a clamping block (603), and the clamping block (603) is rotatably connected to the outer wall of the pull rod (602) via a bearing.

4. A cantilever bridge construction machine load loading device according to claim 1, characterized in that: The clamping structure (3) comprises a base shell (301), the base shell (301) being fixedly connected to the top of the hydraulic rod (2), and two ends of the base shell (301) being slidably connected to two bent plates (302), and being clamped to the inner mold longitudinal beam or the outer mold longitudinal beam of the cantilever bridge-building machine (1) through the two bent plates (302), thereby fixing the position of the hydraulic rod (2).

5. A cantilever bridge construction machine load loading device according to claim 4, characterized in that: The inner cavity of the base shell (301) is rotatably connected to a gear (303), and the inner cavity of the base shell (301) is slidably connected to two racks (304) for pushing the two bent plates (302) to slide simultaneously, and the two racks (304) are symmetrically distributed at both ends of the gear (303) and meshingly connected to the gear (303).

6. A cantilever bridge construction machine load loading device according to claim 1, characterized in that: The bottom of the hydraulic rod (2) is fixedly connected to a support plate (201), the inner cavity of the support plate (201) is rotatably connected to a threaded nail (202), and the threaded nail (202) penetrates the support plate (201) to fix the hydraulic rod (2) to a relatively hard ground foundation, a special test platform or other stable support structure below the cantilever bridge-building machine (1).

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