CN214373216U - Suspension type bridge displacement detection device - Google Patents

Abstract

The utility model relates to a road detection device technical field discloses a suspension type bridge displacement detection device, including the balancing weight, the balancing weight top is equipped with the suspension connection spare that is used for connecting the bridge, the balancing weight bottom is equipped with displacement detection module, displacement detection module has two parts that can take place relative displacement, and one of them part is connected with the balancing weight, and another part is connected with the ground stiff end, has the inductive element who converts the straight line displacement volume into the signal of telecommunication in displacement detection module. This application is through installing displacement detection module under the balancing weight to be connected the balancing weight with the bridge through hanging the connecting piece, make displacement detection module can be used for the detection of bridge displacement, and guarantee the stability of testing process and the accuracy of testing result under the effect of balancing weight.

Description

Suspension type bridge displacement detection device

Technical Field

The application relates to the technical field of road detection devices, in particular to a suspension type bridge displacement detection device.

Background

The deflection deformation of the bridge is an important parameter for evaluating the health condition of the bridge, the static and dynamic deflection values of the bridge need to be accurately measured in the aspects of bridge detection, dangerous bridge reconstruction, new bridge acceptance and the like, along with the technical progress, a plurality of detection methods exist at present, and a collimation laser detection method with higher precision is commonly used. However, since the laser beam is easy to shake due to reasons such as atmospheric turbulence, the requirement for the detection environment is high when the collimated laser detection method is used, and in practice, since the bridge is often erected in places with severe environments such as river surfaces, valleys and the like, the environmental interference is large, and more accurate data can be obtained by detecting for multiple times, so that the detection efficiency is low. The deflection deformation detection is substantially used for detecting the displacement of the bridge in the direction perpendicular to the axis, the traditional LVDT displacement detection module has high detection precision on the displacement, and the bridge cannot be used due to the fact that the height of the bridge cannot be matched with the length of the displacement detection module.

SUMMERY OF THE UTILITY MODEL

In order to solve prior art's the problem that can't be applied to bridge amount of deflection detection with current displacement detection module, this application provides a suspension type bridge displacement detection device.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

the utility model provides a suspension type bridge displacement detection device, includes the balancing weight, the balancing weight top is equipped with the suspension connection spare that is used for connecting the bridge, the balancing weight bottom is equipped with displacement detection module, displacement detection module has two parts that can take place relative displacement, and one of them part is connected with the balancing weight, and another part is connected with the ground stiff end, has the sensing element who converts the straight line displacement volume into the signal of telecommunication in displacement detection module.

The displacement of the bridge generally refers to the linear displacement of the center of gravity of the cross section along the vertical direction of the axis when the bridge is bent and deformed, so that the displacement detection of the bridge generally refers to the linear displacement of the bridge in the vertical direction. The existing detection methods include a precision level method, a total station method, a collimated laser detection method and the like, wherein the detection result of the collimated laser detection method is accurate and becomes a common method in practical application, and the measurement precision is seriously influenced by the light beam jitter caused by the emission of laser spots and atmospheric turbulence, so that when the detection method is applied, the requirement on the environment is high, and more time is consumed to obtain the measurement data with smaller environmental interference factors.

The displacement detection module is a detection device which has high measurement precision and is not easily interfered by environmental factors, and the displacement detection module consisting of two parts of relative displacement is a displacement sensor or a linear sensor, so that the displacement detection module cannot be applied because the structural volume and the using method of the displacement detection module are difficult to match with those of a bridge. Specifically, in the conventional displacement sensor or linear sensor, the displacement sensor or linear sensor is disposed at a position where a relative distance changes, for example, a relative displacement exists between two components, two ends of the displacement sensor or linear sensor are respectively contacted with the two components, a change in the distance between the two components causes a link in the displacement detection module and an iron core in the housing to move, and a sensing element in the housing senses the movement of the iron core and converts the movement into a corresponding electrical signal. Or when measuring the displacement of a single component, one end of the displacement sensor or linear sensor is fixed and kept unchanged, and the other end is abutted against the component generating the displacement. In general, the generation of displacement is synchronized with the movement of the displacement sensor or linear sensor linkage. Because the whole length of the existing displacement sensor or linear sensor is limited, the displacement sensor or linear sensor can only be applied to the position with a small gap at the detected position in order to ensure the detection precision. For the detection of the displacement of the bridge in the vertical direction, on one hand, the distance between the bridge and the ground is too long, so that the displacement detection module is difficult to fix between the bridge and the ground, and on the other hand, the displacement at the center of the bridge is difficult to detect, so that the bridge pier is difficult to be used as a fixed point, and the conventional displacement detection module cannot be directly used for bridge detection.

Consequently, this scheme sets up the balancing weight at displacement detection module top, utilizes to hang the connecting piece and hangs balancing weight and displacement detection module in the bridge below to displacement detection module's both ends can support respectively and lean on ground and balancing weight, and when moving down of vertical direction takes place for the bridge, displacement detection module is compressed, and its inner member produces the linear displacement, and is converted into the signal of telecommunication.

Further, displacement detection module includes the shell, be equipped with the iron core in the shell, iron core end connection has the connecting rod that extends to the shell outward along the shell axis, connecting rod and iron core are for the reciprocating linear motion of inductive element along the axis direction, the inductive element converts the removal of iron core into the signal of telecommunication.

This scheme has carried out further injecing to displacement detection module's structure, and under the initial condition, the bottom of connecting rod supports and leans on fixed point or the reference point on ground, and when the downward displacement takes place for the bridge, because hang connecting piece length unchangeable, then the whole length of displacement detection module shortens, and the connecting rod takes place linear displacement, and the connecting rod changes for inductive element's position, and inductive element converts linear displacement signal into the signal of telecommunication.

Further, the hanging connecting piece is a hard connecting rod, and two ends of the connecting rod are respectively detachably and fixedly connected with the bridge and the balancing weight. The suspension connecting piece in this scheme is the shaft-like of stereoplasm, can avoid balancing weight and displacement detection module's swing. It is worth to be noted that if the height of the measured object such as a bridge is high, a plurality of hard connecting rods can be connected in a threaded mode from head to tail, and therefore the requirement for high-altitude measurement is met.

Further, the suspension connecting piece is a flexible rope. The suspension connecting piece in this scheme is the rope, and it is more convenient to accomodate, simultaneously, when the weight of balancing weight is enough big, also can improve displacement detection module's stability.

Furthermore, a rope winding mechanism is arranged in the balancing weight, and a through hole matched with the hanging connecting piece is formed in the center of the top surface of the balancing weight; one end of the hanging connecting piece is fixedly connected with the rope winding mechanism, and the other end of the hanging connecting piece penetrates through the through hole and is positioned outside the balancing weight. This scheme sets up to flexible suspension connection spare, sets up the wiring mechanism that is used for the shrink suspension connection spare in the balancing weight, and the length of rope is adjusted to the length that can be as required during the use, has improved and has accomodate and the convenience of use.

Further, the rope winding mechanism comprises a rotating shaft which is rotatably installed in the counterweight block, a hanging connecting piece is wound on the rotating shaft, and the rotating shaft is in transmission connection with a driving motor.

Further, the axis of the rotating shaft is perpendicular to the suspension direction of the suspension connecting piece. The pivot is horizontal in this scheme, makes its axis perpendicular with the direction that the suspension connection spare hung outside the balancing weight, can guarantee the pivot and rotate and hang the uniformity that the connection spare extends or shortens. Specifically, taking the vertical arrangement mode of the axis of the rotating shaft as an example, when the rotating shaft is vertically placed, the hanging connecting piece still can slide out of the rotating shaft and extend under the condition that the rotating shaft is static, and the length fixity of the hanging connecting piece cannot be ensured.

Furthermore, one end of the hanging connecting piece, which is positioned outside the balancing weight, is fixedly connected with a hook.

The beneficial effect of this application is: this application is through installing displacement detection module under the balancing weight to be connected the balancing weight with the bridge through hanging the connecting piece, make displacement detection module can be used for the detection of bridge displacement, and guarantee the stability of testing process and the accuracy of testing result under the effect of balancing weight.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic front view of the present application;

FIG. 2 is a perspective view of the present application;

FIG. 3 is a schematic view of the roping arrangement according to the application;

fig. 4 is a schematic diagram of an application of the present application.

In the figure: 1-suspension connection; 2-a balancing weight; 3-a displacement detection module; 301-a housing; 302-connecting rod; 4-a rotating shaft; 5-driving the motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

as shown in fig. 1 and 2, a suspension type bridge displacement detection device comprises a balancing weight 2, a suspension connecting member 1 for connecting a bridge is arranged at the top of the balancing weight 2, a displacement detection module 3 is arranged at the bottom of the balancing weight 2, the displacement detection module 3 has two parts capable of generating relative displacement, one part is connected with the balancing weight 2, the other part is connected with a ground fixed end, and an induction element for converting a linear displacement into an electric signal is arranged in the displacement detection module 3.

During the use, select or set up fixed reference point in the suitable position in bridge below, and this reference point needs to be the entity, chooses for use the suitable suspension connecting piece 1 of length to connect the measuring point and the balancing weight 2 of bridge respectively with the both ends of suspension connecting piece 1, hang balancing weight 2 and displacement detection module 3 in the bridge below through suspension connecting piece 1, make the movable contact among the displacement detection module 3 keep in touch or fixed connection with the reference point, and suspension connecting piece 1 keeps the tensioning state all the time. When the bridge is displaced, the distance between the measuring point and the reference point is reduced or increased, the movable contact in the displacement detection module 3 generates equivalent displacement, and meanwhile, the sensor converts the displacement into an electric signal in a data form, so that the displacement of the bridge is reflected. It should be noted that, in order to reduce the measurement error, it is necessary to take into account environmental factors when reading data before and after measurement, and to calculate the amount of change in the length of the suspension link 1 due to temperature, humidity, and temperature/humidity.

It is worth to say that, the effect of hanging connecting piece 1 is to make displacement detection module 3 reach the reference point, and the connection between hanging connecting piece 1 and balancing weight 2 includes modes such as fixed connection and removable connection. For the detection of different bridges, the distance between the measuring point on the bridge and the fixed reference point may be different, and therefore, the length of the suspension connection member 1 needs to be adjusted, or the suspension connection member 1 is connected additionally, or the suspension connection member 1 is replaced. It needs to notice very much, hang connecting piece 1 in this application not only indicate conventional flexible suspension connecting piece 1, to some comparatively abominable circumstances of testing environment, can also keep stable state after in order to make displacement detection module 3 reach the reference point, hang connecting piece 1 and still can adopt the stereoplasm pole, its both ends respectively with balancing weight 2 and bridge fixed connection.

In addition, the arrangement of the balancing weight 2 can increase the overall weight of the device, when the device is hung below a bridge, the gravity center can be reduced, and the stability of the displacement detection module 3 is improved; the counterweight 2 is heavy enough to keep the suspension connection member 1 in a tensioned state all the time.

Example 2:

in this embodiment, further optimization and limitation are performed on the basis of embodiment 1.

As shown in fig. 2, the displacement detecting module 3 includes a housing 301, an iron core is disposed in the housing 301, a connecting rod 302 extending outward from the housing 301 along an axis of the housing 301 is connected to an end of the iron core, and the connecting rod 302 and the iron core linearly reciprocate along the axis with respect to an inductive element, which converts the movement of the iron core into an electrical signal.

Example 3:

in this embodiment, further optimization and limitation are performed on the basis of embodiment 1.

The suspension connecting piece 1 is a hard connecting rod, and two ends of the connecting rod are respectively detachably and fixedly connected with the bridge and the balancing weight 2. The suspension connecting piece 1 in the embodiment adopts a hard connecting rod, and during use, the stability of the balancing weight and the displacement detection module can be ensured to the greatest extent, so that the swinging of the balancing weight and the displacement detection module is prevented. However, since bridges are often high in height, in order to improve the portability of the present application, the connecting rod may be configured as a telescopic structure or a structure in which a plurality of rods are detachably connected at the head.

Example 4:

this embodiment provides another example of the suspension link 1 on the basis of embodiment 1.

As shown in fig. 3, the suspension connection 1 is a flexible rope. A rope winding mechanism is arranged in the balancing weight 2, and a through hole matched with the suspension connecting piece 1 is formed in the center of the top surface of the balancing weight 2; one end of the hanging connecting piece 1 is fixedly connected with the rope winding mechanism, and the other end of the hanging connecting piece penetrates through the through hole and is positioned outside the balancing weight 2. The rope winding mechanism is installed including rotating pivot 4 in the balancing weight 2, winding hangs connecting piece 1 in the pivot 4, pivot 4 is connected with driving motor 5 transmission. The axis of the rotating shaft 4 is vertical to the suspension direction of the suspension connecting piece 1.

The working principle is as follows: hang connecting piece 1 winding on pivot 4, pivot 4 rotates towards different directions and makes the partial extension or the shortening of hanging connecting piece 1 outside balancing weight 2, and the rotation of pivot 4 is provided with power by driving motor 5, and balancing weight 2 surfaces are provided with the button of control driving motor 5, and the corotation and the reversal of different button control driving motor 5. When the rotating direction of the rotating shaft 4 is the same as the winding direction of the suspension connecting piece 1, the suspension connecting piece 1 outside the balancing weight 2 can be shortened and wound on the rotating shaft 4; on the contrary, when the rotation direction of the rotating shaft 4 is opposite to the winding direction of the suspension link 1, the suspension link 1 on the rotating shaft 4 slides down.

Preferably, one end of the hanging connecting piece 1, which is positioned outside the balancing weight 2, is fixedly connected with a hook.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (8)

1. The utility model provides a suspension type bridge displacement detection device which characterized in that: including balancing weight (2), balancing weight (2) top is equipped with suspension connection spare (1) that is used for connecting the bridge, balancing weight (2) bottom is equipped with displacement detection module (3), displacement detection module (3) have two parts that can take place relative displacement, and one of them part is connected with balancing weight (2), and another part is connected with the ground stiff end, has the inductive element who converts the straight line displacement volume into the signal of telecommunication in displacement detection module (3).

2. A suspension bridge displacement detection device according to claim 1, wherein: displacement detection module (3) include shell (301), be equipped with the iron core in shell (301), iron core end connection has and extends connecting rod (302) along shell (301) axis to shell (301) outward, connecting rod (302) and iron core are along the reciprocal rectilinear movement of axis direction for the inductive element, the inductive element converts the removal of iron core into the signal of telecommunication.

3. A suspension bridge displacement detection device according to claim 1, wherein: the suspension connecting piece (1) is a hard connecting rod, and two ends of the connecting rod are respectively detachably and fixedly connected with the bridge and the balancing weight (2).

4. A suspension bridge displacement detection device according to claim 1, wherein: the suspension connecting piece (1) is a flexible rope.

5. A suspended bridge displacement detection device according to claim 4, wherein: a rope winding mechanism is arranged in the balancing weight (2), and a through hole which is matched with the hanging connecting piece (1) is arranged in the center of the top surface of the balancing weight (2); one end of the hanging connecting piece (1) is fixedly connected with the rope winding mechanism, and the other end of the hanging connecting piece penetrates through the through hole and is positioned outside the balancing weight (2).

6. A suspended bridge displacement detection device according to claim 5, wherein: the rope winding mechanism comprises a rotating shaft (4) which is rotatably installed in the balancing weight (2), the rotating shaft (4) is wound with the hanging connecting piece (1), and the rotating shaft (4) is in transmission connection with the driving motor (5).

7. A suspended bridge displacement detection device according to claim 6, wherein: the axis of the rotating shaft (4) is vertical to the hanging direction of the hanging connecting piece (1).

8. A suspension bridge displacement detection device as claimed in any one of claims 3-7, wherein: and one end of the hanging connecting piece (1) positioned outside the balancing weight (2) is fixedly connected with a hook.

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