Rail transit prefabricated U-shaped beam static load test system

Abstract

The utility model relates to the technical field of rail transit prefabricated U-shaped beam static load test detection, and particularly discloses a rail transit prefabricated U-shaped beam static load test system which comprises a concrete base, two sets of piers arranged below the concrete base, sensors arranged on the two sets of piers, two sets of bases arranged on the concrete base, and a U-shaped beam arranged on the two sets of bases. The concrete base is provided with a gate-type reaction frame, the U-shaped beam is located in the gate-type reaction frame, the gate-type reaction frame comprises a cross beam, the cross beam comprises a first beam body and a second beam body, and the second beam body is provided with two sets of auxiliary pressure applying mechanisms used for detecting the U-shaped beam; the technical problem that when an existing load test system detects a U-shaped beam, vertical pressure cannot be applied to a web of the U-shaped beam, and therefore the test result of the U-shaped beam is affected is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit prefabricated U type roof beam load detection technical field, specifically disclose rail transit prefabricated U type roof beam static load test system. BACKGROUND

[0002] With the development of the times, more and more cities have rail transit, and the distance of rail transit is also longer and longer, in the construction of rail transit, a large number of prestressed concrete prefabricated U type roof beams are used, and after the U type roof beam is manufactured, load test needs to be carried out for quality inspection to determine whether the prefabricated U type roof beam structure quality meets the standard.

[0003] The existing load test system usually uses a door type counterforce frame to exert pressure on the U type roof beam to simulate the situation of the vehicle on the U type roof beam in use when detecting the U type roof beam, and the existing door type counterforce frame can only exert vertical downward pressure on the bottom plate of the U type roof beam, but cannot exert vertical pressure on the web of the U type roof beam, so that the real situation of the U type roof beam cannot be obtained when the load test is carried out, thereby affecting the detection result of the test U type roof beam. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a rail transit prefabricated U type roof beam static load test system to solve the technical problem that the existing load test system cannot exert vertical pressure on the web of the U type roof beam when detecting the U type roof beam, thereby affecting the detection result of the test U type roof beam.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a rail transit prefabricated U type roof beam static load test system, which comprises a concrete base, two groups of piers are arranged below the concrete base, sensors are arranged on the two groups of piers, two groups of bases are arranged on the concrete base, and a U type roof beam is placed on the two groups of bases; a door type counterforce frame is arranged on the concrete base, the U type roof beam is located in the door type counterforce frame, the door type counterforce frame comprises a cross beam, the cross beam comprises a first beam body and a second beam body, and two groups of auxiliary pressure exerting mechanisms for detecting the U type roof beam are arranged on the second beam body. When in use, the staff carries out load test on the U type roof beam through the door type counterforce frame, and the door type counterforce frame can carry out load detection on the bottom plate and the web of the U type roof beam, so that the detection of the U type roof beam is more comprehensive, the data of the detection result is sufficient, and the accuracy of the detection result is ensured.

[0006] Further, the auxiliary pressure applying mechanism comprises a movable block, a hinge seat is hinged to the movable block, a rectangular block is arranged on the hinge seat, a second jack is fixedly connected to the rectangular block, a third jack is arranged on the fixed seat, a fixed end of the third jack is fixedly connected to the fixed seat, and a telescopic end is fixedly connected to the movable block; a buckle is arranged on the movable block. The auxiliary pressure applying mechanism can detect the U-shaped beam web, thereby simulating different pressures applied to the U-shaped beam in use, and more truly simulating the state of the U-shaped beam in use, thereby ensuring the accuracy of the detection result.

[0007] Further, a first jack is arranged on each of the two groups of first beam bodies, a fixed end of the first jack is fixedly connected to the first beam body, and a telescopic end is in contact with the U-shaped beam; a lifting device is arranged between the second beam body and the two groups of first beam bodies. The first jack can perform a traditional load test on the U-shaped beam, and the lifting device can control the height of the second beam body, thereby ensuring that the auxiliary pressure applying mechanism can be moved to a suitable position.

[0008] Further, a plurality of groups of sliding mechanisms are arranged in the base, the sliding mechanism comprises a second matching block, a first matching block is slidably arranged on the second matching block, a universal ball is fixedly connected to the first matching block, and the universal ball, the first matching block and the second matching block are slidably clamped in the base; the first matching block and the second matching block are both in a stepped shape, and the first matching block cooperates with the second matching block. The sliding mechanism can make it more convenient and fast for the worker to move the U-shaped beam, thereby improving the speed of moving the U-shaped beam.

[0009] Further, a fourth jack is arranged between the two groups of bases, fixed blocks are fixedly connected to both ends of the fourth jack, and connecting frames are arranged on the two groups of fixed blocks; the second matching blocks arranged on the same group of bases are fixedly connected to the connecting frames. The fourth jack can control the lifting of the universal ball, thereby controlling whether the U-shaped beam is in contact with the base. When a load test is needed, the U-shaped beam is made to be in contact with the base, and when the U-shaped beam needs to be moved, the U-shaped beam is made to be in contact with the universal ball, thereby ensuring that the universal ball can always be located at a suitable position.

[0010] The working principle and beneficial effects of the present scheme are as follows:

[0011] In use, the worker first starts the fourth jack to control the sliding mechanism to lift the universal ball, then adjusts the U-shaped beam to move the U-shaped beam on the plurality of groups of universal balls until the U-shaped beam is moved to a suitable position, then controls the universal ball to descend by the fourth jack to separate the universal ball from the U-shaped beam, at this time the U-shaped beam is in contact with the base, then controls the U-shaped beam to perform a load test by the portal counter-force frame; the worker moves the U-shaped beam on the sliding mechanism to make the movement of the sliding mechanism more convenient, thereby improving the efficiency of the load test.

[0012] The worker can control the position of the auxiliary pressing mechanism to press the web of the U-shaped beam, so that the U-shaped beam can be detected more comprehensively, the result of the load detection is more comprehensive, and the accuracy of the U-shaped beam detection result is improved.

[0013] Other advantages, objects, and features of the present application will be apparent to those skilled in the art upon reading the following specification, and will be learned from the practice of the application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the embodiment;

[0015] Figure 2 It is a side view of the embodiment;

[0016] Figure 3 It is an exploded view of the embodiment;

[0017] Figure 4 It is a structural schematic view of the sliding mechanism in the embodiment;

[0018] Figure 5 It is Figure 4 It is an enlarged schematic view of A in the embodiment;

[0019] Figure 6 It is a structural schematic view of the portal reaction frame in the embodiment.

[0020] In the drawings, the following marks are used: concrete base 1, pier 2, portal reaction frame 3, cross beam 4, base 5, U-shaped beam 6, first beam body 7, second beam body 8, lifting device 9, first jack 10, movable block 11, hinged seat 12, rectangular block 13, second jack 14, buckle 15, fixed seat 16, third jack 17, fixed groove 18, universal ball 19, first matching block 20, second matching block 21, connecting frame 22, fixed block 23, limiting block 24, sliding groove 25, fourth jack 26. DETAILED DESCRIPTION

[0021] The following will be further described in detail through specific embodiments:

[0022] Embodiment

[0023] As Figures 1 to 6As shown, the rail transit prefabricated U-shaped beam 6 static load test system is disclosed, including a concrete base 1, the bottom end of the concrete base 1 is provided with a pier 2, the pier 2 is provided with a sensor, the sensor is not marked in the description of the drawings, but the sensor is a common technical means for those skilled in the art, and its structure, connection mode and use mode are well known to those skilled in the art; The concrete base 1 is provided with two groups of bases 5, the two groups of bases 5 are provided with U-shaped beams 6, the base is provided with a portal reaction frame 3, and the U-shaped beam 6 is located in the portal reaction frame 3.

[0024] The portal reaction frame 3 includes a cross beam 4, the cross beam 4 includes two groups of first beam bodies 7 and second beam bodies 8, the second beam body 8 is located between the two groups of first beam bodies 7, and the second beam body 8 and the two groups of first beam bodies 7 are provided with lifting devices 9, the lifting device 9 is a common technical means for those skilled in the art, and its structure, connection mode and use mode are well known to those skilled in the art; The two groups of first beam bodies 7 are provided with first jacks 10, the fixed end of the first jack 10 is fixedly connected to the first beam body 7 through a bolt, and the telescopic end of the first jack 10 is in contact with the U-shaped beam 6; As shown in Figure 1 、 Figure 3 and Figure 6 .

[0025] The second beam body 8 is provided with two groups of auxiliary pressure applying mechanisms below, the auxiliary pressure applying mechanism includes a movable block 11, the movable block 11 is hingedly connected with a hinge seat 12, the movable block 11 limits the hinge seat 12, so that the hinge seat 12 can only rotate within a range of 90 degrees, the hinge seat 12 is provided with a rectangular block 13, the rectangular block 13 is provided with a second jack 14, the fixed end of the second jack 14 is fixedly connected to the rectangular block 13 through a bolt, the movable block 11 is slidingly connected to the second beam body 8, the movable block 11 is provided with a buckle 15, the second jack 14 can be clamped on the buckle 15, the second beam body 8 is provided with a fixed seat 16, the fixed seat 16 is provided with a third jack 17, the fixed end of the third jack 17 is fixedly connected to the fixed seat 16 through a bolt, and the telescopic end of the third jack 17 is fixedly connected to the movable block 11; As shown in Figure 2 and Figure 6 .

[0026] A plurality of sliding mechanisms are arranged in the base 5, and each sliding mechanism comprises a universal ball 19. The base 5 is provided with a sliding groove 25 and a fixing groove 18, and the sliding groove 25 and the fixing groove 18 are communicated with each other and with the outside. The communication positions are not located on the same surface of the base 5, and the two communication surfaces are perpendicular to each other. A first matching block 20 is arranged below the universal ball 19, and the universal ball 19 is fixedly connected to the first matching block 20. A second matching block 21 is arranged below the first matching block 20, and the second matching block 21 is slidably connected to the first matching block 20. The second matching block 21 is slidably clamped in the sliding groove 25. The universal ball 19 and the first matching block 20 are slidably clamped in the fixing groove 18. The first matching block 20 and the second matching block 21 are both in a stepped shape, and the connection between each step is smooth and inclined. The first matching block 20 is buckled on the second matching block 21. Figures 3 to 5 as shown.

[0027] Two groups of connecting frames 22 are arranged between the two groups of bases 5. The plurality of second matching blocks 21 arranged in the same base 5 are fixedly connected to the corresponding connecting frames 22. The two groups of connecting frames 22 are both provided with a fixed block 23. A fourth jack 26 is arranged between the two groups of fixed blocks 23. The fourth jack 26 is fixedly connected to the two groups of fixed blocks 23 at both ends. Four groups of limiting blocks 24 are arranged on the concrete base 1, and the four groups of limiting blocks 24 are arranged in a rectangular shape. Two groups of limiting blocks 24 are in contact with one group of fixed blocks 23, and the other two groups of limiting blocks 24 are in contact with the other group of fixed blocks 23. Figure 3 and Figure 4 as shown.

[0028] In specific implementation

[0029] In use, the worker first starts the fourth jack, which drives the universal ball 19 to move through the control sliding mechanism, so that the universal ball 19 is located above the base 5, then the worker moves the U-shaped beam 6 to be detected above the universal ball 19, then the worker adjusts the position of the U-shaped beam 6, so that the U-shaped beam 6 moves to the appropriate position, then the worker starts the fourth jack again, which drives the universal ball 19 to move into the base 5 through the sliding mechanism, so that the universal ball 19 is separated from the U-shaped beam 6, then the worker moves the second jack 14 to the designated position through the control portal counterforce frame 3, then the worker moves the auxiliary pressure mechanism to the appropriate height through the lifting device 9, and then simultaneously starts the first jack 10 and the auxiliary pressure mechanism to perform the load test on the U-shaped beam 6. At this time, the first jack 10 and the second jack 14 are in contact with the U-shaped beam 6 at the same time, and the pressure exerted by the first jack 10 and the second jack 14 on the U-shaped beam 6 can be controlled, so as to achieve the purpose of the load test on the U-shaped beam 6. At the same time, the sensor can collect the test data, so as to detect the real load of the U-shaped beam 6. When the current position of the U-shaped beam 6 is detected, the fourth jack is used to control the sliding mechanism again, so that the universal ball 19 is lifted, which is convenient for the worker to move the U-shaped beam 6. When the U-shaped beam 6 is moved to the designated position, the worker moves the universal ball 19 into the fixed groove 18, until all positions of the U-shaped beam 6 are subjected to the load test.

[0030] When the universal ball 19 is lifted, the fourth jack is extended to drive one set of fixed blocks 23 and the connecting frame 22 to move, the connecting frame 22 drives a plurality of sets of second matching blocks 21 to move horizontally in the sliding groove 25, the first matching block 20 slides on the second matching block 21, the second matching block 21 cooperates with the first matching block 20 through the inclined surface, the first matching block 20 moves upward in the fixed groove 18, and the first matching block 20 drives the universal ball 19 to move upward at the same time; when the second matching block 21 moves to contact the inner wall of the sliding groove 25, one of the horizontal surfaces of the first matching block 20 is attached to one of the horizontal surfaces of the second matching block 21, and the universal ball 19 is separated from the fixed groove 18, and the universal ball 19 is located above the base 5; when the universal ball 19 needs to be lowered, the fourth jack is controlled to retract, the fourth jack drives one set of fixed blocks 23 and the connecting frame 22 to move, the connecting frame 22 drives a plurality of sets of second matching blocks 21 to move, the first matching block 20 moves downward under the action of gravity, so that the first matching block 20 and the second matching block 21 always remain in contact, the first matching block 20 drives the universal ball 19 to move downward, until the universal ball 19 is completely moved into the fixed groove 18; when one of the fixed blocks 23 contacts the corresponding limiting block 24, the fourth jack drives the other set of fixed blocks 23 and the connecting frame 22 to move, until the plurality of sets of universal balls 19 are completely moved into the fixed groove 18, at this time, the bottom end of the U-shaped beam 6 directly contacts the base 5, and the U-shaped beam 6 will not easily slide relative to the base 5.

[0031] When the auxiliary pressing mechanism is used, the worker adjusts the position of the second jack 14 according to the position where the pressure needs to be applied, first needs to drive the movable block 11 and the third jack 17 to the specified position by starting the third jack 17, and the second jack 14 is always vertically downward by gravity at this time, and then the second jack 14 is started until the second jack 14 is in contact with the U-shaped beam 6 to apply pressure to the U-shaped beam 6; when the auxiliary pressing mechanism is used for load test of the U-shaped beam 6, the worker can control the position of the second jack 14, so that the second jack 14 can detect different positions of the web of the U-shaped beam 6, more comprehensively detect the U-shaped beam 6, and improve the accuracy of the detection result of the U-shaped beam 6.

[0032] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application, and these will not affect the effect and practicability of the present application.

Claims

1. A rail transit prefabricated U-shaped beam static load test system, characterized in that: Including concrete base, two groups of piers are arranged below the concrete base, sensors are arranged on the two groups of piers, two groups of bases are arranged on the concrete base, and U-shaped beams are placed on the two groups of bases; The concrete base is provided with a portal reaction frame, the U-shaped beam is located in the portal reaction frame, the portal reaction frame comprises a cross beam, the cross beam comprises a first beam body and a second beam body, two groups of auxiliary pressure applying mechanisms for detecting the U-shaped beam are arranged on the second beam body; The auxiliary pressure applying mechanism comprises a movable block and a hinged seat, the hinged seat is hinged to the movable block, a rectangular block is arranged on the hinged seat, a second jack is fixedly connected to the rectangular block, a fixed seat is arranged on the second beam body, a third jack is arranged on the fixed seat, the fixed end of the third jack is fixedly connected to the fixed seat, and the telescopic end is fixedly connected to the movable block.

2. The rail transit prefabricated U-shaped beam static load test system according to claim 1, characterized in that: First jacks are arranged on the two groups of first beam bodies, the fixed end of the first jack is fixedly connected to the first beam body, and the telescopic end is in contact with the U-shaped beam; Lifting devices are arranged between the second beam body and the two groups of first beam bodies.

3. The rail transit prefabricated U-shaped beam static load test system according to claim 2, characterized in that: A plurality of groups of sliding mechanisms are arranged in the base, the sliding mechanism comprises a second matching block, a slidable first matching block is arranged on the second matching block, a universal ball is fixedly connected to the first matching block, and the universal ball, the first matching block and the second matching block are slidingly clamped in the base; The first matching block and the second matching block are both in a stepped shape, and the first matching block cooperates with the second matching block.

4. The rail transit prefabricated U-shaped beam static load test system according to claim 3, characterized in that: A fourth jack is arranged between the two groups of bases, fixed blocks are fixedly connected to both ends of the fourth jack, and connecting frames are arranged on the two groups of fixed blocks; The second matching blocks on the bases in the same group are fixedly connected to the connecting frames.

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