Force measuring bridge support and force measuring method

Abstract

The invention discloses a force measuring bridge support and a force measuring method, and relates to the field of bridge supports, the force measuring bridge support comprises a base, telescopic sleeves are fixedly connected to the four corners of the base, the ends of the telescopic sleeves are fixedly connected with the bottom surface of an upper base, the force measuring bridge support further comprises a stress movable assembly, a middle block is movably arranged between the upper base and the base, and the middle block is fixedly connected with the upper base. A first notch is formed in the middle block, and the interior of the first notch is rotationally connected with a first oblique traction plate and a second oblique traction plate through short rods. And a support assembly. According to the invention, an upper seat is pressed down under stress and moves downwards, at the moment, two transverse V-shaped inclined traction plates are stressed to push a connecting block I and a connecting block II to move oppositely, a spring main body is stressed to deform, and two displacement sensors in the connecting block I and the connecting block II move; and when the distance between the two displacement sensors changes, the monitoring of the deformation of the bridge under pressure can be judged according to the rule of the change of the distance between the two displacement sensors.

Description

Technical Field

[0001] The invention relates to the field of bridge bearings, and in particular to a force measuring bridge bearing and a force measuring method. Background Art

[0002] The bridge bearing is an important component of the bridge structure. It not only bears the weight of the bridge, but is also responsible for transferring loads and adapting to bridge deformation, ensuring the stability and safety of the bridge structure. At the same time, it reduces the stress of the superstructure and ensures the safety of the bridge structure. The bridge bearing is located in the "throat" part of the bridge. The force changes on the bridge bearing can effectively reflect the overall structural state of the bridge. Timely feedback of this state to the bridge and highway maintenance personnel can enable the staff to understand the bridge status in time, deal with dangerous bridges in time, and reduce the occurrence of accidents.

[0003] The existing Chinese patent authorization announcement number: CN118422567A discloses a basin-type support bearing for bridge monitoring, which relates to the technical field of bridge monitoring, including a lower fixing mechanism and an upper fixing mechanism, and also including a supporting mechanism and a limiting mechanism. The supporting mechanism includes a traction spring and a displacement sensor, a movable seat is installed at one end of the traction spring, and the displacement sensor is arranged on the inner side of one end of the traction spring. A traction plate is installed between the top of the movable seat and the bottom of the lower fixing mechanism. The limiting mechanism includes a limiting plate, and four limiting plates are respectively arranged on both sides of the outer wall at both ends of the lower fixing mechanism, and the inner wall of the limiting plate is plugged with a limiting rod. The invention enables the four movable seats to move under the action of pressure through the support plate, and the displacement sensor can detect the displacement of the movable seat. The rotating limiting plate can clamp and limit the limiting rod, so that the fixed bottom plate and the support plate can be stably connected, so that the device can stably monitor the deformation of the bridge.

[0004] The above-mentioned bridge bearings also have the following problems when in use: the elastic potential energy of the springs in the above-mentioned bridge bearings weakens after a long period of use, which may eventually lead to poor use of the entire bearing, and the installation position of the above-mentioned springs is relatively fixed, which makes it inconvenient to replace new springs later.

[0005] Therefore, it is necessary to invent a force measuring bridge support and a force measuring method to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a force measuring bridge bearing and a force measuring method to solve the problem proposed in the above-mentioned background technology that the elastic potential energy of the spring in the above-mentioned bridge bearing is weakened after a long period of use, which may eventually lead to poor use effect of the entire bearing, and the installation position of the above-mentioned spring is relatively fixed, which makes it inconvenient to replace a new spring later.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a force measuring bridge support and a force measuring method, comprising a base, wherein the four corners of the base are fixedly connected with telescopic sleeves, and the ends of the telescopic sleeves are fixedly connected to the bottom surface of the upper seat, and further comprising: The force-bearing movable assembly is provided with two symmetrical groups, an intermediate block is movably provided between the upper seat and the base, and a notch 1 is provided inside the intermediate block, and the inside of the notch 1 is rotatably connected with the oblique traction plate 1 and the oblique traction plate 2 through a short rod, and the other ends of the oblique traction plate 1 and the oblique traction plate 2 are respectively movably connected with the notch 2 preset inside the upper seat and the base through a short rod; Support assembly, the ends of the two intermediate blocks are fixedly connected to the connecting block one and the connecting block two by screws respectively, and the connecting block one and the connecting block two are movably sleeved together, and a spring structure is movably installed between the connecting block one and the connecting block two.

[0008] Preferably, the two groups of force-bearing movable components are symmetrically arranged with reference to the central axis of the upper seat and the base as the symmetry axis.

[0009] Preferably, an arc surface is provided at the opening of the second notch close to one side of the middle block, so as to ensure that the movement of the two groups of oblique traction plates arranged in a transverse "V" shape is not affected by the size of the opening of the second notch.

[0010] Preferably, the oblique traction plate 1 and the oblique traction plate 2 are arranged in a transverse "V" shape, and a notch is provided at the lower end of the oblique traction plate 1, and the notch is movably connected to the upper end of the oblique traction plate 2; The lower end of the oblique traction plate 1 and the upper end of the oblique traction plate 2 are rotatably connected to a short rod fixedly connected to the inner wall of the notch 1, so that when the upper seat is forced to move downward, the two groups of oblique traction plates are forced to push the connecting block 1 and the connecting block 2 to move.

[0011] Preferably, a movable groove is provided inside the connecting block 1, and the inner wall of the movable groove is in contact with the outer wall of the connecting block 2 to achieve a sliding connection.

[0012] Preferably, the top and bottom of the connecting block 2 are fixedly connected with a limiting plate, and the limiting plate moves inside the limiting grooves preset at the top and bottom of the connecting block 1, and the limiting grooves are connected to the movable grooves, so as to ensure the stability of the activities of the connecting block 1 and the connecting block 2; The inner wall of the movable groove and the end wall of the connecting block 2 located inside the movable groove are fixedly connected with displacement sensors, and the two displacement sensors are on the same straight line. In this way, when the upper seat is pressed downward to cause the connecting block 1 and the connecting block 2 to move, the distance value between the two displacement sensors changes, thereby monitoring the pressure condition of the bridge bearing.

[0013] Preferably, the spring structure includes a spring main body, and the two ends of the spring main body are respectively fixedly connected with a columnar block and a threaded block, and the columnar block moves inside a columnar groove preset inside the middle block, the columnar groove is connected to the movable groove, and the threaded block is threadedly connected to the threaded groove preset inside the second connecting block, which is convenient for subsequent maintenance and replacement of the spring main body.

[0014] The present invention also provides a force measuring method for a force measuring bridge bearing, and the above force measuring bridge bearing is used for monitoring, and the specific operation steps are as follows: Step 1: The upper seat is pressed downward by force and moves downward, and the two oblique traction plates are forced to push the connecting block 1 and the connecting block 2 to move toward each other, and at this time, the spring body is deformed by force; Step 2: The two displacement sensors inside the connection block 1 and the connection block 2 move, and the distance between the two displacement sensors changes; Step 3: Based on the change rule of the distance between the two displacement sensors, the deformation of the bridge under pressure can be monitored, that is, pressure detection can be performed.

[0015] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. In the present invention, the upper seat is pressed downward by force, and the upper seat moves downward. At this time, the two oblique traction plates in a transverse "V" shape are forced to push the connecting block 1 and the connecting block 2 to move toward each other. At this time, the spring body is deformed by force, and the two displacement sensors inside the connecting block 1 and the connecting block 2 are active, and the distance between the two displacement sensors changes. According to the law of the change of the distance between the two displacement sensors, the monitoring of the deformation of the bridge under pressure can be judged; 2. At the same time, the spring body needs to be repaired and maintained after being used for a long time to ensure the smooth use of the entire support. At this time, the threaded block is rotated to make the threaded block rotate out of the original matching threaded groove. Subsequently, the columnar block can be directly removed from the matching columnar groove, and then the spring body can be removed for maintenance and replacement. The replacement of small parts can directly extend the overall service life of the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 It is an exploded view of the overall structure of the present invention; Figure 3It is a three-dimensional diagram of the internal structure of the base and the upper seat (partially cut away) of the present invention; Figure 4 It is an exploded view of the connection structure of the force-bearing movable component and the supporting component of the present invention; Figure 5 A three-dimensional diagram of the internal structure of the connection block 1 (partially cut away) of the present invention; Figure 6 It is an exploded view of the connection structure between the oblique traction plate and the middle block of the present invention.

[0018] Description of reference numerals: 1. Base; 2. Upper seat; 3. Telescopic sleeve; 4. Force-bearing movable component; 401. Middle block; 402. Notch 1; 403. Notch 2; 404. Arc surface; 405. Short rod; 406. Oblique traction plate 1; 407. Oblique traction plate 2; 408. Notch; 5. Support component; 501. Connecting block 1; 502. Connecting block 2; 503. Movable groove; 504. Limiting plate; 505. Limiting groove; 506. Spring structure; 5061. Spring body; 5062. Columnar block; 5063. Columnar groove; 5064. Threaded block; 5065. Threaded groove; 6. Screw; 7. Displacement sensor. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] The present invention provides Figure 1-6 A force measuring bridge support and a force measuring method shown in the figure include a base 1, four corners of the base 1 are fixedly connected with telescopic sleeves 3, and the ends of the telescopic sleeves 3 are fixedly connected to the bottom surface of the upper base 2, and also include: The force-bearing movable assembly 4 is provided with two symmetrical groups, an intermediate block 401 is movably provided between the upper seat 2 and the base 1, and a notch 402 is provided inside the intermediate block 401, and the inside of the notch 402 is rotatably connected with an oblique traction plate 1 406 and an oblique traction plate 2 407 through a short rod 405, and the other ends of the oblique traction plate 1 406 and the oblique traction plate 2 407 are respectively movably connected with the notch 2 403 preset inside the upper seat 2 and the base 1 through the short rod 405; The ends of the two intermediate blocks 401 of the support assembly 5 are fixedly connected to the connecting block 1 501 and the connecting block 2 502 respectively by screws 6, and the connecting block 1 501 and the connecting block 2 502 are movably connected together, and a spring structure 506 is movably installed between the connecting block 1 501 and the connecting block 2 502.

[0021] The two groups of force-bearing movable components 4 are symmetrically arranged with reference to the central axis of the upper seat 2 and the base 1 as the symmetry axis.

[0022] An arc surface 404 is provided at the opening of the notch 403 near the middle block 401, so as to ensure that the movement of the two sets of oblique traction plates arranged in a horizontal "V" shape is not affected by the opening size of the notch 403, thereby ensuring smooth force movement of the oblique traction plate 1 406 and the oblique traction plate 2 407.

[0023] The oblique traction plate 1 406 and the oblique traction plate 2 407 are arranged in a transverse "V" shape, and a notch 408 is provided at the lower end of the oblique traction plate 1 406, and the notch 408 is movably connected to the upper end of the oblique traction plate 2 407, so as to ensure smooth force movement of the oblique traction plate 1 406 and the oblique traction plate 2 407; The lower end of the oblique traction plate 1 406 and the upper end of the oblique traction plate 2 407 are rotatably connected to the short rod 405 fixedly connected to the inner wall of the notch 1 402, so that when the upper seat 2 is forced to move downward, the two groups of oblique traction plates arranged in a horizontal "V" shape can be forced to push the connecting block 1 501 and the connecting block 2 502 to move.

[0024] A movable groove 503 is provided inside the first connecting block 501 , and the inner wall of the movable groove 503 is in contact with the outer wall of the second connecting block 502 to achieve a sliding connection.

[0025] The top and bottom of the second connection block 502 are fixedly connected to the limiting plate 504, and the limiting plate 504 moves inside the limiting grooves 505 preset at the top and bottom of the first connection block 501, and the limiting grooves 505 are connected to the movable grooves 503, so as to ensure the stability of the movement of the first connection block 501 and the second connection block 502; The inner wall of the movable groove 503 and the end wall of the connecting block 2 502 located inside the movable groove 503 are fixedly connected with displacement sensors 7, and the two displacement sensors 7 are on the same straight line. In this way, when the upper seat 2 is pressed downward to cause the connecting block 1 501 and the connecting block 2 502 to move, the distance value between the two displacement sensors 7 changes, thereby monitoring the pressure condition of the bridge bearing.

[0026] The spring structure 506 includes a spring body 5061, and the two ends of the spring body 5061 are respectively fixedly connected with a columnar block 5062 and a threaded block 5064, and the columnar block 5062 moves inside a columnar groove 5063 preset inside the middle block 401, the columnar groove 5063 is connected to the movable groove 503, and the threaded block 5064 is threadedly connected with the threaded groove 5065 preset inside the connecting block 2 502. The threaded block 5064 is rotated to rotate the threaded block 5064 away from the threaded groove 5065 originally matched therewith, and the columnar block 5062 can be directly removed from the columnar groove 5063 matched therewith, and then the spring body 5061 can be removed for maintenance and replacement.

[0027] The present invention also provides a force measuring method for a force measuring bridge bearing, and the above force measuring bridge bearing is used for monitoring, and the specific operation steps are as follows: Step 1: The upper seat 2 is pressed downward by force and moves downward, and the two oblique traction plates are forced to push the connecting block 1 501 and the connecting block 2 502 to move toward each other, and at this time, the spring body 5061 is deformed by force; Step 2: The two displacement sensors 7 inside the connection block 1 501 and the connection block 2 502 move, and the distance between the two displacement sensors 7 changes; Step 3: According to the rule of the distance change between the two displacement sensors 7, the deformation of the bridge under pressure can be monitored, that is, pressure detection can be performed.

[0028] Working principle: When using a force measuring bridge support and a force measuring method, first, when a vehicle passes through the bridge surface, it will generate pressure on the bridge, and then the upper seat 2 is pressed down by the force. At this time, the upper seat 2 moves downward, and the two oblique traction plates 1 406 and the oblique traction plates 2 407 in a horizontal "V" shape are stressed, and the angle between the oblique traction plates 1 406 and the oblique traction plates 2 407 gradually decreases. At this time, the ends of the two sets of symmetrically arranged oblique traction plates 1 406 and the oblique traction plates 2 407 move towards each other, respectively with the two sets of oblique traction plates 1 406 and the oblique traction plates 2 407. 06 and the oblique traction plate 2 407, the connecting block 1 501 and the connecting block 2 502, which are movably connected, move toward each other at this time. The spring body 5061 in the movable groove 503 is deformed by the external force during the movement of the connecting block 1 501 and the connecting block 2 502. At this time, the two displacement sensors 7 in the connecting block 1 501 and the connecting block 2 502 move toward each other, and the distance between the two displacement sensors 7 changes. According to the law of the distance change between the two displacement sensors 7, the monitoring of the deformation of the bridge under pressure can be judged; At the same time, the spring main body 5061 needs to be repaired and maintained after being used for a long time. To ensure the smooth use of the entire support, the intermediate block 401, the connecting block 1 501 and the connecting block 2 502 that are threadedly connected by the screw 6 are separated, and the threaded block 5064 is rotated through the space of the limiting groove 505 so that the threaded block 5064 rotates out of the threaded groove 5065 that originally matched it and was located inside the connecting block 2 502. Subsequently, the columnar block 5062 can be directly taken out of the matching columnar groove 5063, and then the spring main body 5061 can be removed for maintenance and replacement. The replacement of small parts can directly extend the overall service life of the support.

[0029] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A force measuring bridge support, comprising a base (1), characterized in that: The base (1) is fixedly connected to telescopic sleeves (3) at the four corners, and the ends of the telescopic sleeves (3) are fixedly connected to the bottom surface of the upper seat (2), and further comprises: The force-bearing movable assembly (4) is provided with two symmetrical groups, wherein an intermediate block (401) is movably provided between the upper seat (2) and the base (1), and a notch (402) is provided inside the intermediate block (401), and the inside of the notch (402) is rotatably connected to an oblique traction plate (406) and an oblique traction plate (407) via a short rod (405), and the other ends of the oblique traction plate (406) and the oblique traction plate (407) are movably connected to a notch (403) preset inside the upper seat (2) and the base (1) via a short rod (405); The support assembly (5) comprises two intermediate blocks (401) whose ends are fixedly connected to a first connecting block (501) and a second connecting block (502) respectively by screws (6), and the first connecting block (501) and the second connecting block (502) are movably sleeved together, and a spring structure (506) is movably installed between the first connecting block (501) and the second connecting block (502).

2. A force measuring bridge bearing according to claim 1, characterized in that: The two groups of force-bearing movable components (4) are symmetrically arranged with reference to the central axis of the upper seat (2) and the base (1) as the symmetry axis.

3. A force measuring bridge bearing according to claim 1, characterized in that: An arc-shaped surface (404) is provided at the opening of the second notch (403) close to the middle block (401).

4. A force measuring bridge bearing according to claim 1, characterized in that: The oblique traction plate 1 (406) and the oblique traction plate 2 (407) are arranged in a transverse "V" shape, and a notch (408) is provided at the lower end of the oblique traction plate 1 (406), and the notch (408) is movably connected to the upper end of the oblique traction plate 2 (407); The lower end of the oblique traction plate 1 (406) and the upper end of the oblique traction plate 2 (407) are rotatably connected to a short rod (405) fixedly connected to the inner wall of the notch 1 (402).

5. The force measuring bridge bearing according to claim 1, characterized in that: The connection block 1 (501) is provided with a movable groove (503) inside, and the inner wall of the movable groove (503) is in contact with the outer wall of the connection block 2 (502) to achieve a sliding connection.

6. A force measuring bridge bearing according to claim 5, characterized in that: The top and bottom of the second connecting block (502) are fixedly connected to the limiting plate (504), and the limiting plate (504) moves inside the limiting grooves (505) preset at the top and bottom of the first connecting block (501), and the limiting grooves (505) are connected to the movable grooves (503); The inner wall of the movable groove (503) and the end wall of the second connecting block (502) located inside the movable groove (503) are both fixedly connected with displacement sensors (7), and the two displacement sensors (7) are located on the same straight line.

7. A force measuring bridge bearing according to claim 1, characterized in that: The spring structure (506) comprises a spring body (5061), the two ends of the spring body (5061) being respectively fixedly connected with a columnar block (5062) and a threaded block (5064), and the columnar block (5062) is movable inside a columnar groove (5063) preset inside the middle block (401), the columnar groove (5063) is connected to the movable groove (503), and the threaded block (5064) is threadedly connected to a threaded groove (5065) preset inside the second connection block (502).

8. A force measuring method for a force measuring bridge bearing, using a force measuring bridge bearing as claimed in claims 1 to 7 for monitoring, the specific operation steps are as follows: Step 1: The upper seat (2) is pressed downward by force and moves downward, and the two oblique traction plates are forced to push the connecting block 1 (501) and the connecting block 2 (502) to move toward each other, and at this time, the spring body (5061) is deformed by force; Step 2: The two displacement sensors (7) inside the connection block 1 (501) and the connection block 2 (502) move, and the distance between the two displacement sensors (7) changes; Step 3: Based on the change rule of the distance between the two displacement sensors (7), the deformation of the bridge under pressure can be monitored, that is, pressure detection can be performed.

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