A bridge deflection detection device

Abstract

The present invention discloses a bridge deflection detection device, comprising: a deflectometer body; a connecting mechanism, the connecting mechanism being detachably connected to the bottom of the deflectometer body; and a rotating base rotatably connected to the connecting mechanism, the lower portion of the rotating base having a plurality of supporting legs; wherein the connecting mechanism also comprises a mounting shell and a rotation limiting assembly arranged in the mounting shell, the rotation limiting assembly being used to limit the relative rotation of the connecting mechanism and the rotating base, one end of the rotation limiting assembly being oriented toward the bottom of the deflectometer body, so that after changing the connection position between the deflectometer and the body connecting mechanism, the end of the rotation limiting assembly away from the deflectometer body can be moved out or inserted into a limiting groove provided in the rotating base. The bridge deflection detection device of the present invention avoids the relative rotation of the deflectometer body and the rotating base, drives the rotation limiting assembly to act on the rotating base through the lower portion of the deflectometer body, and can also make the overall structure more simplified.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge detection devices, and in particular relates to a bridge deflection detection device. Background Art

[0002] At present, the traditional measurement methods of bridge deflection mainly include: leveling and total station measurement. The traditional leveling and total station measurement methods use surveying instruments such as levels and total stations to set up detection benchmarks and several measurement points, introduce the elevation data of the reference benchmarks, and perform measurements manually.

[0003] Deflectometer is an instrument used to measure deflection. It can measure the change in vertical distance of an object above it at any angle. It is mainly used for the measurement of static and dynamic deflection of bridges, acceptance and appraisal of completed bridges, and inspection of special bridges such as military floating bridges and suspension bridges.

[0004] Authorization announcement number CN211477551U discloses a bridge deflection detection device, such as Figure 1 As shown, a support is installed at the bottom of the deflection meter body. The support is designed to be able to rotate on the upper part of the rotating base. By inserting the chuck into the fixed cavity, the support is prevented from rotating or shaking. The bridge deflection detection device does not need to be assembled and fixed with bolts, which effectively improves the work efficiency and speed. At the same time, it is also simpler and more convenient to disassemble later.

[0005] Its defect is that although the insertion of the clamp into the fixed cavity can prevent the deflection meter body from rotating relative to the rotating base, a number of balls are arranged in the lower support of the rotating base, and the balls are located between the upper support and the lower support. Therefore, the rotating base itself has the characteristic of rotating along its own axis. However, it does not take technical means to limit the rotation of the upper support relative to the lower support, resulting in that when the staff actually use this equipment, rotation will still occur after adjusting the angle, affecting the accuracy of the deflection detection. Summary of the invention

[0006] In order to solve the technical problem that the upper support relative to the lower support in the existing bridge deflection detection device rotates, which affects the accuracy of deflection detection when the device is actually used to measure deflection, the present invention provides a bridge deflection detection device. By designing a rotation limiting component inside the installation shell, the relative rotation of the connecting mechanism and the rotating base is limited, so that in actual use, the stability of the bridge deflection detection device can be improved and the relative rotation of the deflectometer body and the rotating base can be avoided. The present invention drives the rotation limiting component to act on the rotating base through the lower part of the deflection meter body, and can also make the overall structure simpler.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A bridge deflection detection device, comprising:

[0009] Deflectometer body;

[0010] A connecting mechanism, the connecting mechanism is detachably connected to the bottom of the deflectometer body; and a rotating base rotatably connected to the connecting mechanism, the lower part of the rotating base has a plurality of supporting legs;

[0011] Among them, the connecting mechanism also includes an installation shell and a rotation limiting component arranged in the installation shell, and the rotation limiting component is used to limit the relative rotation of the connecting mechanism and the rotating base. One end of the rotation limiting component faces the bottom of the deflection meter body, so that after changing the connection position of the deflection meter and the body connecting mechanism, the end of the rotation limiting component away from the deflection meter body can be moved out or stuck into the limit groove opened in the rotating base.

[0012] Furthermore, the rotation limiting assembly includes a rotation limiting column and a rotation limiting spring. The cross-section of the rotation limiting column is a polygonal structure. The end of the rotation limiting column away from the deflection meter body has a rotation limiting head. The rotation limiting column passes through the rotation limiting spring. The rotation limiting spring applies a force to the rotation limiting column away from the limiting groove.

[0013] Furthermore, the cross section of the rotation limiting head is a polygonal structure, and one end of the rotation limiting head away from the limiting groove has a chamfer.

[0014] Further, one end of the mounting shell is a rotating end rotatably connected to the rotating base, and the end of the mounting shell away from the rotating end is a connecting end, and the connecting mechanism further includes a driving assembly, a transmission assembly and an execution assembly, and the connecting end is provided with a connecting groove, the driving assembly is rotatably connected to the mounting shell, and the driving assembly is in transmission cooperation with the transmission assembly, the transmission assembly is connected to the execution assembly, and the execution assembly partially extends into the connecting groove;

[0015] Among them, one end of the driving component is an operating end extending out of the mounting shell, so that when the operating end of the driving component is operated, the part of the actuator located in the connecting groove can fix the deflectometer body in the connecting groove.

[0016] Furthermore, the driving assembly includes a rotating screw rod, which passes through a driving hole opened on the mounting shell, and the rotating screw rod is connected to the mounting shell through a bearing. A rotating disk is fixed to one end of the rotating screw rod, and the rotating disk is arranged outside the mounting shell.

[0017] Furthermore, there are two transmission assemblies which are symmetrically arranged on both sides of the mounting shell. The transmission assembly includes a threaded sleeve, a rotating rod and a pillar fixed on the mounting shell. The rotating screw is threadedly connected to the threaded sleeve, the middle part of the rotating rod is hinged to the pillar, one end of the rotating rod is hinged to the threaded sleeve, and the other end is hinged to the actuator, so that the threaded sleeve can move along the axis direction of the rotating screw after the rotating screw is rotated.

[0018] Furthermore, there are two actuators and both are limit rods. The length direction of the limit rods is parallel to the axis direction of the rotating screw. One end of the limit rod is hinged to the rotating rod, and the other end extends into the connecting groove, and the limit rod can move with the rotation of the rotating rod.

[0019] Furthermore, at least two rotating heads are fixed to the bottom of the mounting shell, and the rotating heads are in a "T"-shaped structure, with the end of the rotating head away from the mounting shell being a large end, and the large end extends into an annular groove formed on the rotating base.

[0020] Furthermore, a connecting head is fixed at the bottom of the deflectometer body, and a plurality of grooves are distributed on the side of the connecting head along the height direction, and the grooves correspond to the ends of the limiting rod.

[0021] Compared with the prior art, the beneficial effects of this solution are:

[0022] 1. In the bridge deflection detection device of the present invention, the bottom of the deflectometer body is detachably connected to the connecting mechanism, the connecting mechanism is rotatably connected to the rotating base, the connecting mechanism includes a mounting shell and a rotation-limiting assembly arranged in the mounting shell, and by changing the connection position between the deflectometer and the body connecting mechanism, the relative rotation of the rotating base and the connecting mechanism can be limited by the rotation-limiting assembly, thereby avoiding the relative rotation of the deflectometer body and the rotating base, and the rotation-limiting assembly is driven by the lower part of the deflectometer body to act on the rotating base, which can also make the overall structure more simplified;

[0023] 2. Under preferred conditions, the bridge deflection detection device of the present invention is equipped with a driving assembly in the installation shell, and the driving assembly drives the transmission assemblies symmetrically arranged on both sides of the installation shell to work. The transmission assembly transmits power to the actuator assembly, so that the actuator assembly partially extends into the connecting groove, thereby clamping the deflection meter body, and the deflection meter body can be easily installed on the connecting mechanism, or removed from the deflection meter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an existing bridge deflection detection device;

[0025] Figure 2 It is a front view of the bridge deflection detection device of the present invention;

[0026] Figure 3 It is a cross-sectional view of the connection mechanism of the bridge deflection detection device of the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0028] The reference numerals are:

[0029] Deflectometer body 1, connecting head 11, groove 12, connecting mechanism 2, mounting shell 21, rotating head 211, connecting groove 212, rotation limiting column 22, spring 221, rotation limiting head 23, rotating screw 24, rotating disk 241, bearing 242, transmission assembly 25, threaded sleeve 251, rotating rod 252, support column 253, limiting rod 26, rotating base 3, limiting groove 31, supporting leg 4. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, the deflectometer body 1 of the existing bridge deflection detection device is rotatably mounted on the rotating base 3, and can be rotated around the rotating base 3 in the horizontal plane to facilitate adjustment of the direction. The deflectometer body 1 itself can adjust the pitch angle, which is a prior art. The defect of the existing bridge deflection detection device is that the rotating base 3 includes an upper support and a lower support, and a plurality of balls are arranged in the lower support, and the balls are located between the upper support and the lower support, so the upper support and the lower support can rotate relative to each other, and cannot be fixed at a certain angle, resulting in that when the staff actually use this device, after adjusting the angle, it will still rotate and affect the accuracy of the deflection detection.

[0032] Therefore, the present invention provides a bridge deflection detection device, such as Figure 2 As shown, including:

[0033] Deflectometer body 1;

[0034] A connecting mechanism 2, wherein the connecting mechanism 2 is detachably connected to the bottom of the deflectometer body 1; and

[0035] A rotating base 3 rotatably connected to the connecting mechanism 2, wherein the rotating base 3 has a plurality of supporting legs 4 at the lower portion;

[0036] Among them, the connecting mechanism 2 also includes an installation shell 21 and a rotation limiting component arranged in the installation shell 21, and the rotation limiting component is used to limit the relative rotation of the connecting mechanism 2 and the rotating base 3. One end of the rotation limiting component is toward the bottom of the deflectometer body 1, so that after changing the connection position of the deflectometer and the body connecting mechanism 2, that is, changing the depth of the bottom connecting head 11 of the deflectometer body 1 in the connecting groove 212, the end of the rotation limiting component away from the deflectometer body 1 can be moved out or stuck into the limiting groove 31 opened in the rotating base 3.

[0037] According to a specific embodiment provided by the present invention, Figure 3 and Figure 4 As shown, the rotation limiting assembly includes a rotation limiting column 22 and a rotation limiting spring 221. The cross section of the rotation limiting column 22 is a polygonal structure. The end of the rotation limiting column 22 away from the deflectometer body 1 is provided with a rotation limiting head 23. The rotation limiting column 22 passes through the rotation limiting spring 221. The rotation limiting spring 221 applies a force to the rotation limiting column 22 away from the limiting groove 31. The cross section of the rotation limiting head 23 is a polygonal structure, and the end of the rotation limiting head 23 away from the limiting groove 31 is chamfered so as to better insert into the rotation limiting groove.

[0038] In this embodiment, the rotation limit assembly is arranged between the deflectometer body 1 and the rotating base 3, and is located in the installation shell 21. When the user uses the bridge deflection detection device, the support leg 4 is supported on the ground. At this time, the rotation limit column 22 is in a vertical state, that is, perpendicular to the ground. In this way, when the user needs to prevent the deflectometer body 1 from rotating, the deflectometer body 1 can be installed in a set position so that the rotation limit column 22 compresses the rotation limit spring 221, and the rotation limit head 23 is inserted into the rotation limit groove. The rotation limit groove is provided on the side of the rotating base 3 facing the rotation limit column 22, and is provided corresponding to the rotation limit column 22. Since the cross section of the rotation limit column 22 is a polygonal structure, the connection mechanism 2 is prevented from rotating relative to the rotating base 3, thereby limiting the rotation of the deflectometer body 1 in the horizontal plane. In this way, the user can only adjust the pitch angle of the deflectometer body 1 to complete the detection of the bridge deflection data.

[0039] Further, one end of the mounting housing 21 is a rotating end rotatably connected to the rotating base 3, and the end of the mounting housing 21 away from the rotating end is a connecting end. The connecting mechanism 2 further includes a driving component, a transmission component 25 and an actuator component. The connecting end is provided with a connecting groove 212. The driving component is rotatably connected to the mounting housing 21, and the driving component is in transmission cooperation with the transmission component 25. The transmission component 25 is connected to the actuator component, and the actuator component partially extends into the connecting groove 212.

[0040] One end of the driving component is an operating end extending out of the mounting shell 21 , so that when the operating end of the driving component is operated, the part of the actuator located in the connecting groove 212 can fix the deflectometer body 1 in the connecting groove 212 .

[0041] The bridge deflection detection device of the present invention is equipped with a driving assembly in the installation shell 21. By operating the operating end of the driving assembly, the driving assembly drives the transmission assembly 25 symmetrically arranged on both sides of the installation shell 21 to work. The transmission assembly 25 transmits power to the actuator assembly, so that the actuator assembly partially extends into the connecting groove 212, thereby clamping the deflection meter body 1, and the deflection meter body 1 can be easily installed on the connecting mechanism 2, or removed from the deflection meter body 1.

[0042] In another preferred embodiment, the present invention can design a transmission assembly 25 only on one side of the mounting shell 21, which can be the left side of the mounting shell 21 or the right side of the mounting shell 21. Of course, only the number is changed, and the structure of the transmission assembly 25 is not changed. Correspondingly, only one actuator is installed on the mounting shell 21, which is connected with the transmission assembly 25. The operating principle is basically the same as the structure of the symmetrically designed transmission assembly 25. The difference is that the actuator is inserted into the groove 12 of the connecting head 11 fixed at the bottom of the deflection meter body 1 from one side, and the groove 12 is distributed along the length direction of the connecting head 11. Therefore, when the connecting head 11 is pressed into the connecting groove 212, the limit head can be pressed into the limit groove 31 according to needs, or the limit head cannot be pressed into the limit groove 31.

[0043] In specific design, the connection groove 212 can be opened in the middle of the installation shell 21. The installation shell 21 is a hollow structure inside. The connection groove 212 can be a groove chamber formed by bending the wall of the installation shell 21, or it can be formed by hollowing out the outer wall of the installation shell 21.

[0044] Furthermore, the driving assembly includes a rotating screw 24, which passes through a driving hole opened on the mounting shell 21. The rotating screw 24 is connected to the mounting shell 21 through a bearing 242. A rotating disk 241 is fixed to one end of the rotating screw 24, and the rotating disk 241 is arranged outside the mounting shell 21.

[0045] According to a specific embodiment provided by the present invention, when the bridge deflection detection device is placed vertically, in a preferred state, the rotating screw 24 is in a horizontal state, so that it is convenient for the user to rotate, and the rotating disk 241 is a disk structure or an annular structure, and the driving holes are opened on the two side walls of the installation shell 21, so that the rotating screw 24 can pass through the driving holes. In the specific design, it is necessary to stagger the limit column and the rotating screw 24, that is, the limit column can be designed to deviate from the middle of the bottom wall of the installation shell 21, stagger the rotating screw 24, as long as the end of the limit column can be pressed down by the connector 11.

[0046] During the specific installation, Figure 4 As shown, the middle portion of the rotating screw rod 24 passes through the bearing 242 , and the bearing 242 is installed on the inner wall of the mounting shell 21 at the connecting groove 212 and the other side of the inner wall.

[0047] Furthermore, there are two transmission components 25 and they are symmetrically arranged on both sides of the mounting shell 21. The transmission component 25 includes a threaded sleeve 251, a rotating rod 252 and a pillar 253 fixed on the mounting shell 21. The rotating screw 24 is threadedly connected to the threaded sleeve 251, the middle part of the rotating rod 252 is hinged to the pillar 253, one end of the rotating rod 252 is hinged to the threaded sleeve 251, and the other end is hinged to the actuator, so that after the rotating screw 24 is rotated, the threaded sleeve 251 can move along the axis direction of the rotating screw 24.

[0048] According to a specific embodiment provided by the present invention, in this embodiment, the transmission assembly 25 is symmetrically arranged on both sides of the mounting shell 21, the threaded sleeve 251 has an internal thread and is threadedly connected to the rotating screw 24, the threaded sleeve 251 is hinged with a rotating rod 252 on the outside, the middle part of the rotating rod 252 is hinged to the support 253, and the other end of the rotating rod 252 is hinged to the actuator, so that after the rotating screw 24 is rotated, the two threaded sleeves 251 will move away from each other at the same time, or approach each other, and the actuator can be pried to work by rotating the rotating rod 252.

[0049] Furthermore, there are two actuators and both are limit rods 26. The length direction of the limit rod 26 is parallel to the axial direction of the rotating screw 24. One end of the limit rod 26 is hinged to the rotating rod 252, and the other end extends into the connecting groove 212. The limit rod 26 can move as the rotating rod 252 rotates.

[0050] According to a specific embodiment provided by the present invention, the execution assembly is arranged corresponding to the transmission assembly 25 , and the limit rod 26 is fixed with a limit card. When the limit rod 26 moves to a certain distance, the limit card will abut against the installation shell 21 .

[0051] Furthermore, at least two rotating heads 211 are fixed to the bottom of the mounting shell 21 , and the rotating heads 211 are in a “T”-shaped structure, with the end of the rotating head 211 away from the mounting shell 21 being a large end, and the large end extends into the annular groove formed in the rotating base 3 .

[0052] Furthermore, a connector 11 is fixed to the bottom of the deflectometer body 1 , and a plurality of grooves 12 are distributed on the side of the connector 11 along the height direction, and the grooves 12 correspond to the ends of the limiting rod 26 .

[0053] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge deflection detection device, characterized in that: include: Deflectometer body; A connecting mechanism, the connecting mechanism is detachably connected to the bottom of the deflectometer body; as well as A rotating base rotatably connected to the connecting mechanism, wherein the lower portion of the rotating base has a plurality of supporting legs; Wherein, the connecting mechanism further comprises a mounting shell and a rotation-limiting assembly arranged in the mounting shell, the rotation-limiting assembly is used to limit the relative rotation of the connecting mechanism and the rotating base, one end of the rotation-limiting assembly is toward the bottom of the deflectometer body, so that after the connection position of the deflectometer body and the connecting mechanism is changed, the end of the rotation-limiting assembly away from the deflectometer body can be moved out of or stuck into the limiting groove provided in the rotating base; One end of the mounting shell is a rotating end rotatably connected to the rotating base, and the end of the mounting shell away from the rotating end is a connecting end. The connecting mechanism also includes a driving assembly, a transmission assembly and an execution assembly. The connecting end is provided with a connecting groove. The driving assembly is rotatably connected to the mounting shell, and the driving assembly is in transmission cooperation with the transmission assembly. The transmission assembly is connected to the execution assembly, and the execution assembly partially extends into the connecting groove. One end of the driving component is an operating end extending out of the mounting housing, so that when the operating end of the driving component is operated, the part of the actuator located in the connecting groove can fix the deflectometer body in the connecting groove; There are two actuator components, both of which are limit rods; A connector is fixed at the bottom of the deflectometer body, and a plurality of grooves are distributed on the side of the connector along the height direction. The grooves correspond to the ends of the limit rods, that is, the depth of the connector at the bottom of the deflectometer body is changed in the connecting groove.

2. A bridge deflection detection device as claimed in claim 1, characterized in that: The rotation limiting assembly includes a rotation limiting column and a rotation limiting spring. The cross-section of the rotation limiting column is a polygonal structure. The end of the rotation limiting column away from the deflectometer body has a rotation limiting head. The rotation limiting column passes through the rotation limiting spring. The rotation limiting spring applies a force to the rotation limiting column away from the limiting groove.

3. A bridge deflection detection device as claimed in claim 2, characterized in that: The cross section of the rotation limiting head is a polygonal structure, and one end of the rotation limiting head away from the limiting groove has a chamfer.

4. A bridge deflection detection device according to claim 3, characterized in that: The driving assembly includes a rotating screw rod, which passes through a driving hole opened on the mounting shell, and is connected to the mounting shell through a bearing. A rotating disk is fixed to one end of the rotating screw rod, and the rotating disk is arranged outside the mounting shell.

5. A bridge deflection detection device according to claim 4, characterized in that: There are two transmission assemblies which are symmetrically arranged on both sides of the mounting shell. The transmission assembly includes a threaded sleeve, a rotating rod and a pillar fixed to the mounting shell. The rotating screw is threadedly connected to the threaded sleeve, the middle part of the rotating rod is hinged to the pillar, one end of the rotating rod is hinged to the threaded sleeve, and the other end is hinged to the actuator, so that the threaded sleeve can move along the axis direction of the rotating screw after the rotating screw is rotated.

6. A bridge deflection detection device according to claim 5, characterized in that: The length direction of the limiting rod is parallel to the axis direction of the rotating screw rod. One end of the limiting rod is hinged to the rotating rod, and the other end extends into the connecting groove. The limiting rod can move with the rotation of the rotating rod.

7. A bridge deflection detection device according to any one of claims 4 to 6, characterized in that: At least two rotating heads are fixed at the bottom of the mounting shell, and the rotating heads are in a "T"-shaped structure. The end of the rotating head away from the mounting shell is the large end, and the large end extends into the annular groove opened on the rotating base.

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