Device for simulating and measuring vertical load stress

Abstract

The utility model discloses a device for simulating and measuring vertical load stress, which comprises an upper bearing plate, a load distribution plate is arranged below the upper bearing plate, pressure guide covers are fixedly mounted at four corners of the bottom end of the upper bearing plate, annular claw buckles are fixedly mounted at four corners of the top end of the load distribution plate respectively, and a pressure measuring column is inserted into each annular claw buckle. The pressure measuring column is sleeved with a protective cylinder, the pressure measuring column is sleeved with a first spring, the first spring is arranged above the protective cylinder, and the upper bearing plate, the load distribution plate and other structures are used in cooperation, so that the device can well simulate the vertical load generated by the beam body under the driving load and the perturbation caused by the self weight of the beam body; therefore, the device can well obtain data of longitudinal compression force and transverse shear force, normal proceeding of follow-up construction work is ensured, and meanwhile the device is simple in structure, quite convenient to carry and install, low in cost and high in created economic benefit.

Description

Technical Field

[0001] This utility model relates to the field of building engineering testing instruments, specifically to a device for simulating and measuring vertical load forces. Background Technology

[0002] Bridge rubber bearings are made of multiple layers of rubber sheets and thin steel plates vulcanized and bonded together. They have sufficient vertical stiffness to reliably transfer the reaction force of the superstructure to the piers and abutments; they have good elasticity to accommodate the rotation of the beam ends; and they have a large shear deformation capacity to meet the horizontal displacement of the superstructure.

[0003] Bridge rubber bearings not only boast excellent technical performance but also feature simple construction, low cost, maintenance-free operation, easy replacement, shock absorption and isolation, and low structural height. Therefore, they are highly popular and widely used in the bridge industry.

[0004] However, since the shear force and compressive force are different for each bridge during the laying process, and the existing rubber bearings are installed directly without testing, although most of them meet the usage requirements, there are also cases where the rubber bearings are subjected to excessive shear force or compressive force after installation, resulting in deformation and damage.

[0005] Therefore, a preliminary force testing device is needed to test shear force and compressive force data. Utility Model Content

[0006] To address the aforementioned problems, this invention provides a device for simulating and measuring vertical load forces.

[0007] This utility model is achieved through the following technical solution:

[0008] A device for simulating and measuring vertical load force includes an upper bearing plate, a load distribution plate below the upper bearing plate, pressure guide covers fixedly installed at the four corners of the bottom end of the upper bearing plate, and annular claw buckles fixedly installed at the four corners of the top end of the load distribution plate. A pressure measuring column is inserted into each annular claw buckle, a protective cylinder is sleeved on the pressure measuring column, and a first spring is sleeved on the pressure measuring column. The first spring is positioned above the protective cylinder, and the top end of each first spring is fitted with the bottom end of the corresponding pressure guide cover. A support column is installed between the upper bearing plate and the load distribution plate, and a second spring is sleeved on the support column. The top end of the second spring is fitted with the bottom end of the upper bearing plate, and the bottom end of the second spring is fitted with the top end of the load distribution plate.

[0009] Preferably, several friction protrusions are fixedly installed on the top of the upper pressure plate and the bottom of the load distribution plate.

[0010] Preferably, the bottom end of the upper bearing plate and the top end of the load distribution plate are both fixedly connected to connecting rods, one end of each connecting rod is fixedly connected to a fixing plate, and a slot is fixedly installed on the side wall of each connecting rod. The support column is annular, and two crossbars are fixedly installed inside the support column. The two crossbars extend into the corresponding slots and are slidably connected to them.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: by using the combined use of structures such as the upper bearing plate and the load distribution plate, the device can effectively simulate the vertical load generated by the beam under traffic load and the deflection caused by the beam's own weight. By utilizing the failure mode that occurs under the above conditions, the device can accurately obtain data on longitudinal compressive force and transverse shear force, ensuring the normal progress of subsequent construction work. At the same time, the device has a simple structure, is very convenient to carry and install, has low cost, and creates high economic benefits. Attached Figure Description

[0012] Figure 1 This is a first-view perspective perspective view of the structure of this utility model;

[0013] Figure 2 This is a second-view perspective perspective view of the structure of this utility model.

[0014] In the diagram: 1. Upper pressure plate; 2. Load distribution plate; 3. Pressure guide cover; 4. First spring; 5. Pressure measuring column; 6. Ring claw buckle; 7. Protective cylinder; 8. Support column; 9. Second spring; 10. Connecting rod; 11. Crossbar; 12. Fixing plate; 13. Slot. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0016] like Figure 1 , Figure 2As shown, a device for simulating and measuring vertical load force includes an upper pressure plate 1, a load distribution plate 2 below the upper pressure plate 1, pressure guide covers 3 fixedly installed at the four corners of the bottom end of the upper pressure plate 1, and annular claw buckles 6 fixedly installed at the four corners of the top end of the load distribution plate 2. A pressure measuring column 5 is inserted into each annular claw buckle 6, a protective cylinder 7 is sleeved on the pressure measuring column 5, and a first spring 4 is sleeved on the pressure measuring column 5. The first spring 4 is positioned above the protective cylinder 7, and the top end of each first spring 4 is fitted against the bottom end of the corresponding pressure guide cover 3. A support column 8 is installed between the upper pressure plate 1 and the load distribution plate 2, and a second spring 9 is sleeved on the support column 8. The top end of the second spring 9 is fitted against the bottom end of the upper pressure plate 1, and the bottom end of the second spring 9 is fitted against the top end of the load distribution plate 2. The pressure guide covers 3 are circular covers, mainly used for transmitting pressure and accurate pressure measurement. The support columns 8 are hollow and thin-walled. The steel pipes primarily provide support, while the second spring 9 provides auxiliary support. The four pressure-measuring columns 5 are made of wood with an internal pressure-resistant graphite core. The four first springs 4 connect to the pressure guide cover 3, enabling more effective force transmission. The four plastic protective sleeves prevent damage to the pressure-measuring columns 5 from rain, snow, wind, and insects such as ants. The four ring-shaped claw buckles fix the pressure-measuring columns 5 and facilitate the installation of the first springs 4. The load distribution plate 2, composed of two layers of thin steel plates sandwiching a solid wooden board, distributes the load. The specific workflow involves placing the device in a flat area between the bottom of the beam and the supporting pad, with the top of the upper pressure plate 1 in contact with the bottom of the beam. When damage occurs, the damage to the device is observed to obtain data on the transverse shear force and longitudinal compressive force, facilitating the normal progress of subsequent construction work.

[0017] Several friction protrusions are fixedly installed on the top of the upper pressure plate 1 and the bottom of the load distribution plate 2 to prevent slipping.

[0018] Connecting rods 10 are fixedly connected to the bottom of the upper pressure plate 1 and the top of the load distribution plate 2. A fixing plate 12 is fixedly connected to one end of each connecting rod 10. A slot 13 is fixedly installed on the side wall of each connecting rod 10. The support column 8 is annular. Two crossbars 11 are fixedly installed inside the support column 8. The two crossbars 11 extend into the corresponding slots 13 and slide to them. During installation, the connecting rods 10 and the fixing plates 12 are inserted into the support column 8 together. Then, the support column 8 is moved to one side so that it is snapped into the slot 13. After the upper pressure plate 1 and the load distribution plate 2 are installed, the second spring 9 is sleeved on the support column 8. The elastic force of the second spring 9 can keep the upper pressure plate 1 and the load distribution plate 2 as one unit, thus completing the installation and putting them into normal use.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for simulating the action of vertical loads, comprising an upper pressure plate (1), characterised in that: A load distribution plate (2) is provided below the upper pressure plate (1). A pressure guide cover (3) is fixedly installed at the four corners of the bottom end of the upper pressure plate (1). A ring claw buckle (6) is fixedly installed at the four corners of the top end of the load distribution plate (2). A pressure measuring column (5) is inserted into each ring claw buckle (6). A protective cylinder (7) is sleeved on the pressure measuring column (5). A first spring (4) is sleeved on the pressure measuring column (5). The first spring (4) is set above the protective cylinder (7). The top end of each first spring (4) is attached to the bottom end of the corresponding pressure guide cover (3). A support column (8) is installed between the upper pressure plate (1) and the load distribution plate (2). A second spring (9) is sleeved on the support column (8). The top end of the second spring (9) is attached to the bottom end of the upper pressure plate (1). The bottom end of the second spring (9) is attached to the top end of the load distribution plate (2).

2. The device for simulating the vertical load according to claim 1, wherein: Several friction protrusions are fixedly installed on the top end of the upper pressure plate (1) and the bottom end of the load distribution plate (2).

3. The device according to claim 1, wherein: The bottom end of the upper pressure plate (1) and the top end of the load distribution plate (2) are both fixedly connected to connecting rods (10). One end of each connecting rod (10) is fixedly connected to a fixing plate (12). A slot (13) is fixedly installed on the side wall of each connecting rod (10). The support column (8) is annular. Two crossbars (11) are fixedly installed inside the support column (8). The two crossbars (11) extend into the corresponding slots (13) and slide to them.

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