Longitudinal beam bearing performance detection device for bridge expansion joint

Abstract

The utility model relates to the technical field of bridge engineering, in particular to a longitudinal beam bearing performance detection device for a bridge expansion joint, which comprises a base, an air cylinder arranged on the right upper end wall of the base, and a lower pressing block mounted on the right upper end wall of the base and in transmission with the air cylinder. A side penetrating opening for a longitudinal beam part to penetrate through is formed in the end wall of the left side of the machine base in a penetrating mode, a clamping opening is formed in the lower right end wall of the machine base, a rectangular bottom plate is arranged at the position, close to the end wall of the clamping opening, of the machine base, and a buckle matched with the clamping opening is arranged on the bottom end wall of the bottom plate. According to the utility model, the four bayonets are symmetrically arranged on the bottom end wall of the base in pairs, so that when the bottom plate is clamped with the base through the buckles, the bottom plate has a transverse placement state and a longitudinal placement state, and is matched with the longitudinally arranged lower pressing block and the upper end face of the longitudinal beam to carry out large-range and small-node detection, and the bearing resistance of the whole or local small nodes of the longitudinal beam is detected.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a device for testing the load-bearing capacity of longitudinal beams for bridge expansion joints. Background Technology

[0002] Bridge engineering refers to the work process of bridge surveying, design, construction, maintenance and inspection, as well as the science and engineering technology that studies this process. It is a branch of civil engineering. In bridge engineering, longitudinal beams are used when constructing bridge expansion joints. Before the longitudinal beams are put into use, their load-bearing capacity is tested. This testing device is used to test the load-bearing capacity of bridge longitudinal beams.

[0003] When testing longitudinal beams used in bridge engineering, the beams are placed in a press machine, and a pressure block is pressed down on the beam using a cylinder in the machine to test the beam's load-bearing capacity. However, since the longitudinal beams are objects of varying lengths and widths, when the pressure block is long, although it fits well with the upper surface of the beam, it is impossible to test the resistance of small nodes of the beam under stress, resulting in an incomplete testing effect. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the load-bearing capacity of longitudinal beams used in bridge expansion joints.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for testing the load-bearing capacity of longitudinal beams for bridge expansion joints includes a base, a cylinder mounted on the upper right end wall of the base, and a lower pressure block mounted on the upper right end wall of the base that drives the cylinder. A side through-hole for passing through the longitudinal beam is provided on the left end wall of the base, and a latch is provided on the lower right end wall of the base. A rectangular base plate is provided on the end wall of the base near the latch, and a buckle adapted to the latch is installed on the bottom end wall of the base plate. A support for supporting the longitudinal beam is fixed on the upper end wall of the base plate, and a seat groove for mounting the longitudinal beam is provided on the top end wall of the support.

[0007] Preferably, the side opening is rectangular, and the height of the bottom wall of the side opening is the same as the height of the seat groove at the top wall of the support.

[0008] Preferably, there are four checkpoints, and the checkpoints are arranged symmetrically in pairs.

[0009] Preferably, there are two buckles, and the base plate is engaged with the machine base through the buckles and latches. At the same time, the length of the lower pressure block is equal to the distance between the two supports on the base plate, and the width of the lower pressure block is less than half of the distance between the two supports on the base plate.

[0010] Preferably, the two symmetrical latches on the machine base are engaged with the buckles on the base plate, so that the two supports on the base plate are placed horizontally in the machine base.

[0011] Preferably, the two longitudinally symmetrical latches of the base are engaged with the snap fasteners of the base plate, so that the two supports on the base plate are longitudinally placed in the base.

[0012] This utility model has at least the following beneficial effects:

[0013] Four symmetrically arranged latches in pairs are located on the bottom wall of the base, allowing the base plate to be placed in both horizontal and vertical positions when it is snapped into place with the base. In conjunction with the longitudinally arranged pressure block, the upper surface of the longitudinal beam is subjected to large-scale and small-node testing to detect the overall or local small-node load-bearing capacity of the longitudinal beam. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 for Figure 1 A diagram showing the buckles and latches at the base plate;

[0017] Figure 3 for Figure 1 A top view of the support;

[0018] Figure 4 for Figure 1 A top-down view of the checkpoint.

[0019] In the diagram: 1. Base; 2. Cylinder; 3. Lower pressure block; 4. Side through-hole; 5. Clamp; 6. Base plate; 7. Buckle; 8. Support; 9. Seat groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for a testing device for the load-bearing capacity of longitudinal beams used in bridge expansion joints:

[0022] like Figure 1-4 As shown, the longitudinal beam bearing capacity testing device for bridge expansion joints includes a base 1, a cylinder 2 installed on the upper right end wall of the base 1, and a lower pressure block 3 installed on the upper right end wall of the base 1 that is driven by the cylinder 2. A side through-hole 4 for passing through the longitudinal beam is provided on the left end wall of the base 1. The side through-hole 4 is rectangular and the height of the bottom end wall of the side through-hole 4 is the same as the height of the seat groove 9 at the top end wall of the support 8.

[0023] Based on Example 1, such as Figure 1 and Figure 4 As shown, a four-way latch 5 is provided on the lower right end wall of the base 1, and the latches 5 are arranged symmetrically in pairs. A rectangular base plate 6 is provided on the end wall of the base 1 near the latch 5. A buckle 7 that matches the latch 5 is installed on the bottom end wall of the base plate 6. A support 8 for supporting the longitudinal beam is fixed on the upper end wall of the base plate 6. There are two buckles 7. The base plate 6 is engaged with the base 1 through the buckles 7 and the latch 5. At the same time, the length of the lower pressure block 3 is equal to the distance between the two supports 8 on the base plate 6, and the width of the lower pressure block 3 is less than half of the distance between the two supports 8 on the base plate 6.

[0024] Based on Example 1, such as Figure 1 and Figure 2 As shown, the top wall of the support 8 is provided with a seat groove 9 for mounting the longitudinal beam. The two symmetrical slots 5 of the machine base 1 are engaged with the buckles 7 of the base plate 6, so that the two supports 8 on the base plate 6 are placed horizontally in the machine base 1. The two symmetrical slots 5 of the machine base 1 are engaged with the buckles 7 of the base plate 6, so that the two supports 8 on the base plate 6 are placed vertically in the machine base 1.

[0025] Working principle:

[0026] The base 1 is in the shape of a concave letter. In the base 1, the lower pressure block 3, which is longer than wide, is arranged longitudinally. When the cylinder 2 drives the lower pressure block 3 to move downward, it is used to press the lower pressure block 3 against the upper end face of the longitudinal beam.

[0027] The two symmetrical latches 5 on the machine base 1 are engaged with the buckles 7 on the base plate 6, so that the two supports 8 on the base plate 6 are placed horizontally in the machine base 1. At this time, the longitudinal beam can be placed horizontally on the supports 8. The cylinder 2 drives the lower pressure block 3 to move down, so that the longitudinally arranged lower pressure block 3 presses against the upper end face of the horizontally arranged longitudinal beam, making small node contact with the upper end face of the longitudinal beam, and testing the load-bearing performance of the small-range node of the longitudinal beam.

[0028] The two symmetrical slots 5 in the longitudinal direction of the base 1 are engaged with the buckles 7 of the base plate 6, so that the two supports 8 on the base plate 6 are placed longitudinally in the base 1, and the longitudinal beam is placed longitudinally on the supports 8. The cylinder 2 drives the lower pressure block 3 to move down, so that the longitudinally arranged lower pressure block 3 presses against the upper end face of the longitudinally arranged longitudinal beam, making a large-scale contact with the upper end face of the longitudinal beam, and testing the large-scale and overall load-bearing performance of the longitudinal beam.

[0029] The two testing methods described above are used to comprehensively test the load-bearing capacity of the longitudinal beam, and the testing effect is more thorough. The seat groove 9 at the top wall of the support 8 is designed to facilitate the mounting of the longitudinal beam, while the side through-hole 4 at the side wall of the base 1 is designed so that when the longitudinal beam is mounted laterally, any excess ends can pass through the side through-hole 4 and extend out, so as to facilitate the testing of the longitudinal beam.

[0030] 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 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 longitudinal beam bearing performance detection device for bridge expansion joints, comprising a machine base (1), a pneumatic cylinder (2) arranged at the right upper end wall of the machine base (1), and a pressing block (3) installed at the right upper end wall of the machine base (1) and driven by the pneumatic cylinder (2), characterized in that, The left end wall of the base (1) is provided with a side through hole (4) for passing through the longitudinal beam, the lower right end wall of the base (1) is provided with a bayonet (5), the end wall of the base (1) near the bayonet (5) is provided with a rectangular bottom plate (6), the bottom end wall of the bottom plate (6) is provided with a buckle (7) matched with the bayonet (5), the upper end wall of the bottom plate (6) is fixedly provided with a support (8) for supporting the longitudinal beam, and the top end wall of the support (8) is provided with a seat groove (9) for loading the longitudinal beam.

2. The longitudinal beam carrying capacity detection device for bridge expansion joints according to claim 1, characterized in that, The side through hole (4) is rectangular, and the height of the bottom end wall of the side through hole (4) is the same as the height of the seat groove (9) at the top end wall of the support (8).

3. The longitudinal beam load performance detection device for bridge expansion joints according to claim 1, characterized in that, The bayonet (5) is provided with four, and the two bayonets (5) are symmetrically arranged in each group.

4. The longitudinal beam load performance detection device for bridge expansion joints according to claim 1, characterized in that, The buckle (7) is provided with two, and the bottom plate (6) is clamped with the base (1) through the buckle (7) and the bayonet (5), the length of the lower pressing block (3) is equal to the interval between the two supports (8) on the bottom plate (6), and the width of the lower pressing block (3) is less than half of the interval between the two supports (8) on the bottom plate (6).

5. The longitudinal beam load performance detection device for bridge expansion joints according to claim 1, characterized in that, The two symmetric bayonets (5) of the base (1) are clamped with the buckle (7) of the bottom plate (6), so that the two supports (8) on the bottom plate (6) are horizontally arranged in the base (1).

6. The longitudinal beam load performance detection device for bridge expansion joints according to claim 1, characterized in that, The two symmetric bayonets (5) of the base (1) are clamped with the buckle (7) of the bottom plate (6), so that the two supports (8) on the bottom plate (6) are horizontally arranged in the base (1). The two symmetric bayonets (5) of the base (1) are clamped with the buckle (7) of the bottom plate (6), so that the two supports (8) on the bottom plate (6) are horizontally arranged in the base (1).

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