Bridge preloading observation device based on BIM

Abstract

The application belongs to the technical field of observation devices, and particularly relates to a bridge pre-pressing observation device based on BIM, which comprises a total station based on BIM and a lens, one side of the total station is provided with the lens, a BIM module is fixedly installed at the top of the total station, a sleeve ring is fixedly installed on the side of the total station close to the lens, a notch is formed at the top of the sleeve ring, and an end cover is rotatably connected in the notch of the sleeve ring, the end cover in the notch of the sleeve ring is rotated, the end cover is rotated towards the direction of the elastic film and the base, the elastic film is continuously extruded by the end cover, the elastic film is extruded and can extrude and slide the sliding rod through air pressure, the sliding rod moves towards the direction of the lens with the cleaning pad, the cleaning pad is no longer restricted after leaving the notch of the sleeve ring, the cleaning pad is expanded and enlarged at this time, the contact area with the lens is increased, and the lens is cleaned through the downward movement of the sliding rod.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of observation devices, and particularly relates to a bridge pre-pressing observation device based on BIM. BACKGROUND

[0002] Before a bridge is installed and used, the bridge needs to be pre-pressed, and the change of the bridge during pre-pressing is recorded, so as to play a role in real-time recording and observation. When the bridge pre-pressing is observed, a total station with a BIM module needs to be used to observe the change of the bridge pre-pressing in real time.

[0003] A patent of Chinese patent application CN107576306A discloses a bridge support pre-pressing observation device, which comprises a beam plate. The bridge support pre-pressing observation device has a simple structure. By manually rotating a first disc by one circle, a worm is rotated by one circle. The worm is engaged with a worm wheel, so that the worm wheel is rotated by a small distance, so that a winding reel is rotated by a small distance. The movable panel is moved upward by a small distance through a steel wire rope. By reversing the first disc, the movable panel can be moved downward, so that the effect of fine adjustment is achieved.

[0004] In view of the above and the prior art, the inventors believe that the following defects often exist: When the total station is used to observe the pre-pressed bridge, the total station needs to be placed on one side of the bridge for a long time. Since there are many dusts and impurities on the scene during the pre-pressing of the bridge, the environment is harsh. After the total station is placed for a long time, the lens surface of the total station will be covered with dust and impurities. The traditional total station does not have a lens cleaning mechanism, so that the accuracy of observation is affected.

[0005] Therefore, the application provides a bridge pre-pressing observation device based on BIM. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the bridge pre-press observation device based on BIM, comprising a total station and a lens based on BIM, the total station is provided with the lens on one side, and the BIM module is fixedly installed on the top of the total station; the total station is fixedly installed with a collar on the side close to the lens, the top of the collar is provided with a notch, the notch of the collar is rotatably connected with an end cover, the total station is fixedly installed with an elastic film on one side close to the lens, the bottom of the elastic film is fixedly installed with a base, the base is fixedly connected with the total station away from the elastic film, the base and the elastic film form a closed cavity, the inner wall of the base is sealingly and slidably connected with a sliding rod, the two ends of the sliding rod are respectively located in the cavity and the collar, the bottom of the sliding rod is fixedly installed with a cleaning pad, the surface of the sliding rod is fixedly sleeved with a spring, and the other end of the spring is fixedly connected with the base; when the total station is used to observe the pre-pressed bridge, the total station needs to be placed on one side of the bridge for a long time, since there are many dust and impurities on site and the environment is bad when the bridge is pre-pressed, the surface of the lens on the total station will be covered with dust and impurities after the total station is placed for a long time, and the traditional total station does not have a lens cleaning mechanism, thereby affecting the accuracy of observation, in the working process of the present application, the end cover in the notch of the collar is rotated, so that the end cover is rotated towards the elastic film and the base, the elastic film is continuously extruded by the end cover, the elastic film is extruded by the air pressure to extrude the sliding rod, so that the sliding rod moves towards the lens with the cleaning pad, the cleaning pad is no longer restricted after leaving the notch of the collar, at this time, the cleaning pad (which can be a flexible sponge material) expands and becomes larger, thereby increasing the contact area with the lens, and cooperating with the downward movement of the sliding rod, thereby wiping and cleaning the lens, when the end cover extrudes the elastic film and rotates towards the lens, the end cover and the lens form a ninety-degree angle, the end cover is fixed by friction and will not fall back, and when the end cover no longer extrudes the elastic film, the spring in the base resets the sliding rod and the cleaning pad, thereby realizing cleaning of the lens, and meanwhile, the observation of the lens is not disturbed.

[0008] Preferably, the side of the end cover away from the lens is rotatably connected with a roller, and the top of the sliding rod is fixedly installed with an arc-shaped guide block; in the working process, when the end cover rotates, the roller rotates together, the roller and the arc-shaped guide block on the top of the sliding rod are in contact, the arc-shaped guide block plays a guiding role, so that the sliding rod can better slide towards the lens, and the roller also plays a role of reducing friction, facilitating extrusion of the elastic film by the end cover.

[0009] Preferably, the elastic film and the base cavity preloaded with water, the surface of the sliding rod is provided with a guide hole, the guide hole through the sliding rod, the guide hole outlet is fixedly installed with an arc-shaped guide plate; when working, because the elastic film and the base cavity preloaded with water, when the elastic film is extruded and the sliding rod slides, the water outlet of the guide hole is outside the cavity, and the water inlet of the guide hole is in the cavity, so the water in the cavity flows into the water inlet of the guide hole, and then flows out through the water outlet of the guide hole, and cooperates with the arc-shaped guide plate to guide the flow, so that the water is sprayed to the cleaning pad and the lens, and the cleaning pad and the lens are wetted, thereby assisting the cleaning of the lens; when the sliding rod is reset by the spring, the water inlet and the water outlet of the guide hole are in the cavity, so that the water flow cannot flow out, thereby reducing the waste of water flow and saving water resources.

[0010] Preferably, the inside of the sliding rod is provided with a connecting hole, a plurality of water outlets are arranged at the bottom of the connecting hole, the top end of the connecting hole is communicated with the guide hole, the bottom end of the connecting hole extends into the inside of the cleaning pad, and the inside of the connecting hole is connected with an electric control valve; the sleeve ring corresponding to the bottom end of the sliding rod is provided with a press switch matched with the electric control valve; when working, after the cleaning pad works for a long time, more impurities will be adhered to the surface of the cleaning pad, and some impurities will enter the inside of the cleaning pad and be difficult to clean, thereby affecting the subsequent cleaning effect of the cleaning pad; at this time, when the cleaning pad is dirty, the amplitude of the rotating end cover is controlled, the sliding rod moves downward to the press switch (not shown in the figure) and is extruded, the electric control valve is opened, the water flow in the guide hole flows into the connecting hole, and then flows out from the inside to the outside of the cleaning pad, thereby washing the cleaning pad from the inside to the outside, and improving the cleanliness of the cleaning pad and the subsequent use effect.

[0011] Preferably, one side of the total station close to the lens is fixedly provided with a heating wire in a cavity formed by a base and an elastic film, the guide block is made of magnetic material, the inner wall of the base is fixedly provided with an elastic rope, and the other end of the elastic rope is fixedly provided with an agitating block made of magnetic material; in operation, when the total station is used in cold weather, frost will exist on the surface of the lens of the total station, at this time, the heating wire in the cavity is started to heat the water in the cavity, when the sliding rod moves with the guide block, since the guide block and the agitating block are made of magnetic material, the guide block will attract the agitating block when moving, so that the agitating block moves towards the guide block, and the agitating block will agitate the water in the cavity when moving, so that the water in the cavity can be uniformly heated, avoiding the situation that the water around the heating wire is heated, while the water far away is difficult to heat; after the hot water in the cavity is sprayed out, the frost on the lens can be quickly melted, and the cleaning pad can be softened, avoiding the situation that the frost on the lens and the frozen cleaning pad scratch the lens, and the lens is protected.

[0012] Preferably, the cleaning pad and the sliding rod are fixedly connected through an L-shaped welding block, the inside of the cleaning pad is fixedly provided with a hollow elastic block, and the cross section of the lens is inclined; in operation, by setting the lens to be inclined, when the cleaning pad is cleaned, the cleaning pad is continuously extruded, and the cleaning pad extrudes the elastic block in the inside at the same time, so that the elastic block drives the cleaning pad to deform, thereby expanding the cleaning area and achieving better cleaning effect; since the cleaning pad is continuously extruded, the water in the inside is also extruded and flows away, so that the dirty water in the inside is extruded; when the cleaning pad is extruded, the L-shaped welding block between the sliding rod and the cleaning pad plays a limiting role, preventing the cleaning pad from deforming towards the periphery, so that the water in the cleaning pad is better extruded; when the water in the cleaning pad is extruded and reset, since the cleaning pad is in a dry state, the cleaning pad can absorb the residual water on the lens when being reset, thereby facilitating subsequent observation of the lens and reducing the influence of the residual water on observation of the lens.

[0013] The beneficial effects of the application are as follows:

[0014] 1. The bridge pre-press observation device based on BIM provided by the application, by rotating the end cover in the gap of the sleeve ring, the end cover is rotated towards the elastic film and the base, the elastic film is continuously extruded by the end cover, after being extruded, the elastic film can extrude the sliding rod through air pressure, the sliding rod will move towards the lens with the cleaning pad, after the cleaning pad leaves the gap of the sleeve ring, it is no longer restricted, at this time, the cleaning pad (which can be flexible sponge material) expands and becomes larger, thereby increasing the contact area with the lens, and cooperating with the downward movement of the sliding rod, thereby wiping and cleaning the lens, when the end cover extrudes the elastic film, and rotates back towards the lens, the end cover and the lens form a ninety-degree angle, the end cover is fixed by friction and will not fall back, and when the end cover no longer extrudes the elastic film, the spring in the base resets the sliding rod and the cleaning pad, thereby realizing cleaning of the lens without interfering with the observation of the lens.

[0015] 2. The bridge pre-press observation device based on BIM provided by the application, when the end cover rotates, the roller rotates together, the roller and the arc-shaped guide block on the top of the sliding rod are in contact, the arc-shaped guide block plays a guiding role, so that the sliding rod can better slide towards the lens, and the roller also plays a role in reducing friction, facilitating the extrusion of the end cover on the elastic film. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is a schematic view of the three-dimensional structure of the total station in the application;

[0018] Figure 2 is a schematic view of the structure at A of the application; Figure 1

[0019] Figure 3 is a sectional view of the elastic film in the application;

[0020] Figure 4 is a schematic view of the local structure of the end cover in the application;

[0021] Figure 5 is a schematic view of the structure at B of the application; Figure 3

[0022] Figure 6 is a sectional view of the sliding rod in the application;

[0023] Figure 7 is a sectional view of the rectangular plate in the application;

[0024] Figure 8 is a schematic view of the structure at C of the application; Figure 7

[0025] Figure 9 ​​​is a sectional view of the welding block in embodiment two of the present application.

[0026] In the figure: 1, total station; 2, lens; 3, BIM module; 4, collar; 5, end cover; 6, elastic film; 7, base; 8, sliding rod; 9, cleaning pad; 10, spring; 11, roller; 12, guide block; 13, guide hole; 14, guide plate; 15, connecting hole; 16, electric control valve; 19, heating wire; 20, stirring block; 21, elastic rope; 22, rectangular plate; 23, sliding block; 24, fixed block; 25, sunshade cloth; 26, clamping groove; 27, clamping block; 28, water guide cotton; 29, protective sleeve; 30, extrusion block; 31, sliding plate; 33, sliding groove; 34, swing rod; 35, filter screen; 37, welding block; 38, elastic block. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments. Embodiment one

[0028] As Figures 1 to 8As shown, the bridge pre-press observation device based on BIM provided by the embodiment of the application comprises a total station 1 based on BIM and a lens 2, the total station 1 is provided with the lens 2 on one side, and a BIM module 3 is fixedly installed on the top of the total station 1; a sleeve ring 4 is fixedly installed on the side of the total station 1 close to the lens 2, a notch is formed in the top of the sleeve ring 4, an end cover 5 is rotatably connected in the notch of the sleeve ring 4, an elastic film 6 is fixedly installed on one side of the total station 1 close to the lens 2, a base 7 is fixedly installed on the bottom of the elastic film 6, and the base 7 is fixedly connected with the total station 1 away from the elastic film 6, the base 7 and the elastic film 6 form a closed cavity, a sliding rod 8 is sealingly and slidably connected with the inner wall of the base 7, the two ends of the sliding rod 8 are respectively located in the cavity and the sleeve ring 4, a cleaning pad 9 is fixedly installed on the bottom of the sliding rod 8, a spring 10 is fixedly sleeved on the surface of the sliding rod 8, and the other end of the spring 10 is fixedly connected with the base 7; when the total station 1 is used to observe the pre-press bridge, the total station 1 needs to be placed on one side of the bridge for a long time, since there are many dust and impurities on the scene and the environment is bad when the bridge is pre-pressed, the surface of the lens 2 on the total station 1 will be covered with dust and impurities after the total station 1 is placed for a long time, and the traditional total station 1 does not have a mechanism for cleaning the lens 2, thereby affecting the accuracy of observation, in the working process of the application, the end cover 5 in the notch of the sleeve ring 4 is rotated, the end cover 5 is rotated towards the elastic film 6 and the base 7, the end cover 5 continuously extrudes the elastic film 6, the elastic film 6 is extruded and can extrude the sliding rod 8 through air pressure, the sliding rod 8 moves towards the lens 2 with the cleaning pad 9, the cleaning pad 9 is no longer restricted after leaving the notch of the sleeve ring 4, at this time, the cleaning pad 9 (which can be a flexible sponge material) expands and becomes larger, thereby increasing the contact area with the lens 2, and cooperating with the downward movement of the sliding rod 8, thereby wiping and cleaning the lens 2, when the end cover 5 extrudes the elastic film 6 and rotates towards the lens 2, the end cover 5 and the lens 2 form a ninety-degree angle, the end cover 5 is fixedly connected through friction and will not fall back, and when the end cover 5 no longer extrudes the elastic film 6, the spring 10 in the base 7 resets the sliding rod 8 and the cleaning pad 9, thereby realizing the cleaning of the lens 2, and meanwhile, the observation of the lens 2 is not disturbed.

[0029] The end cover 5 is rotatably connected with a roller 11 away from the lens 2, and an arc-shaped guide block 12 is fixedly installed on the top of the sliding rod 8; in the working process, when the end cover 5 rotates, the roller 11 rotates together, the roller 11 and the arc-shaped guide block 12 on the top of the sliding rod 8 are in contact, the arc-shaped guide block 12 plays a guiding role, so that the sliding rod 8 can better slide towards the lens 2, and the roller 11 also plays a role in reducing friction, facilitating the extrusion of the end cover 5 on the elastic film 6.

[0030] The cavity composed of the elastic film 6 and the base 7 is preloaded with water, the surface of the sliding rod 8 is provided with a flow guide hole 13, the flow guide hole 13 penetrates through the sliding rod 8, and the water outlet of the flow guide hole 13 is fixedly provided with an arc-shaped guide plate 14; in operation, since the cavity composed of the elastic film 6 and the base 7 is preloaded with water, when the elastic film 6 is extruded and the sliding rod 8 slides, the water inlet of the flow guide hole 13 is outside the cavity, and the water outlet of the flow guide hole 13 is inside the cavity, so that the water in the cavity flows in through the water inlet of the flow guide hole 13, flows out through the water outlet of the flow guide hole 13, and is guided by the arc-shaped guide plate 14, so that the water is sprayed to the cleaning pad 9 and the lens 2, the cleaning pad 9 and the lens 2 are wetted, and the lens 2 is assisted to be cleaned; when the sliding rod 8 is reset by the spring 10, the water inlets and outlets of the flow guide hole 13 are both inside the cavity, so that the water flow cannot flow out, thereby reducing the waste of water flow and saving water resources.

[0031] The inside of the sliding rod 8 is provided with a connecting hole 15, the bottom of the connecting hole 15 is provided with a plurality of water outlets, the top end of the connecting hole 15 communicates with the flow guide hole 13, the bottom end of the connecting hole 15 extends into the inside of the cleaning pad 9, the inside of the connecting hole 15 is connected with an electric control valve 16, and the sleeve ring 4 corresponding to the bottom end of the sliding rod 8 is provided with a press switch matched with the electric control valve 16; in operation, after the cleaning pad 9 works for a long time, more impurities are adhered to the surface of the cleaning pad 9, and some impurities enter the inside of the cleaning pad 9 and are difficult to clean, thereby affecting the subsequent cleaning effect of the cleaning pad 9; at this time, by setting the above structure, when the cleaning pad 9 is dirty, the amplitude of the rotating end cover 5 is controlled, the sliding rod 8 moves downward to the press switch (not shown in the figure) and is extruded, the electric control valve 16 is opened, the water flow in the flow guide hole 13 flows into the connecting hole 15, and then flows out from the inside to the outside of the cleaning pad 9, so that the cleaning pad 9 can be washed from the inside to the outside, and the cleanliness and subsequent use effect of the cleaning pad 9 are improved.

[0032] A heating wire 19 is fixedly installed on the side of the total station 1 near the lens 2. The heating wire 19 is located in the cavity formed by the base 7 and the elastic membrane 6. The guide block 12 is made of magnetic material. An elastic rope 21 is fixedly installed on the inner wall of the base 7, and a magnetic stirring block 20 is fixedly installed at the other end of the elastic rope 21. During operation, when the total station 1 is used in cold weather, frost may accumulate on the surface of the lens 2. At this time, the heating wire 19 in the cavity is activated, causing the heating wire 19 to heat the water in the cavity. When the sliding rod 8 moves with the guide block 12, the guide block 1... 2 and the stirring block 20 are made of magnetic material, so when the guide block 12 moves, it will attract the stirring block 20, causing the stirring block 20 to move in the direction of the guide block 12. When the stirring block 20 moves, it will stir the water in the cavity, so that the water in the cavity can be heated evenly, avoiding the situation where the water around the heating wire 19 is heated while the water further away is difficult to heat. When the hot water in the cavity is sprayed out, it will quickly melt the frost on the lens 2 and soften the cleaning pad 9 at the same time, preventing the frost on the lens 2 and the frozen cleaning pad 9 from scratching the lens 2, thus protecting the lens 2. Example 2

[0033] like Figure 9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the cleaning pad 9 and the sliding rod 8 are fixedly connected by an "L"-shaped welding block 37. A hollow elastic block 38 is fixedly installed inside the cleaning pad 9, and the cross-section of the lens 2 is inclined. During operation, by setting the lens 2 in an inclined position, when the cleaning pad 9 cleans the lens 2, the cleaning pad 9 is also continuously squeezed. When the cleaning pad 9 is squeezed, it will simultaneously apply pressure to the internal elastic block 38, causing the elastic block 38 to drive the cleaning pad 9 to deform, thereby expanding the cleaning area and achieving a better cleaning effect. After being continuously squeezed, the internal water of the cleaning pad 9 will be squeezed out and flow away, thus squeezing out the dirty water inside. When the cleaning pad 9 is squeezed, the "L"-shaped welding block 37 installed between the sliding rod 8 and the cleaning pad 9 plays a limiting role, preventing the cleaning pad 9 from deforming in all directions, so that the water inside the cleaning pad 9 can be squeezed out better. When the water inside the cleaning pad 9 is squeezed out and returns to its original position, since the cleaning pad 9 is in a dry state, the cleaning pad 9 can absorb the residual water on the lens 2 when it returns to its original position, thereby facilitating the subsequent observation of the lens 2 and reducing the impact of residual water on the observation of the lens 2.

[0034] The working principle is that the end cover 5 in the gap of the sleeve ring 4 is rotated to the direction of the elastic film 6 and the base 7, so that the end cover 5 continuously extrudes the elastic film 6. After the elastic film 6 is extruded, it can be extruded by air pressure to slide the slide rod 8, so that the slide rod 8 moves to the direction of the lens 2 with the cleaning pad 9. After the cleaning pad 9 leaves the gap of the sleeve ring 4, it is no longer restricted. At this time, the cleaning pad 9 (which can be flexible sponge material) expands and becomes larger, thereby increasing the contact area with the lens 2, and cooperating with the downward movement of the slide rod 8, thereby wiping and cleaning the lens 2. When the end cover 5 extrudes the elastic film 6 and rotates to the direction of the lens 2, the end cover 5 and the lens 2 form a 90-degree angle. The end cover 5 is fixed by friction and will not fall back. When the end cover 5 no longer extrudes the elastic film 6, the spring 10 in the base 7 resets the slide rod 8 and the cleaning pad 9, thereby realizing the cleaning of the lens 2 without interfering with the observation of the lens 2. When the end cover 5 rotates, it drives the roller 11 to rotate, so that the roller 11 contacts the arc-shaped guide block 12 on the top of the slide rod 8. The arc-shaped guide block 12 guides the slide rod 8 to slide better to the direction of the lens 2. At the same time, the roller 11 can reduce friction to facilitate the extrusion of the elastic film 6 by the end cover 5. Because the cavity composed of the elastic film 6 and the base 7 is preloaded with water, when the elastic film 6 is extruded and the slide rod 8 slides, the water outlet of the flow guide hole 13 is outside the cavity, and the water inlet of the flow guide hole 13 is inside the cavity. Therefore, the water in the cavity flows into the water inlet of the flow guide hole 13 and flows out of the water outlet of the flow guide hole 13, and cooperates with the arc-shaped guide plate 14 to guide the flow, so that the water sprays to the cleaning pad 9 and the lens 2, thereby wetting the cleaning pad 9 and the lens 2, and assisting in cleaning the lens 2. When the slide rod 8 is reset by the spring 10, the water inlet and outlet of the flow guide hole 13 are both in the cavity, so the water flow cannot flow out, thereby reducing water waste and saving water resources. After the cleaning pad 9 works for a long time, its surface will adhere to more impurities, and some impurities will enter the inside of the cleaning pad 9 and be difficult to clean, thereby affecting the subsequent cleaning effect of the cleaning pad 9. At this time, by setting the above structure, when the cleaning pad 9 is dirty, the amplitude of rotating the end cover 5 is controlled to move the slide rod 8 to the press switch (not shown in the figure) and extrude it, so that the electric control valve 16 is opened, so that the water flow in the flow guide hole 13 flows from the connecting hole 15 to the outside of the cleaning pad 9, thereby flushing the cleaning pad 9 from the inside to the outside, thereby improving the cleanliness of the cleaning pad 9 and the subsequent use effect.When the total station 1 is used in cold days, frost will exist on the surface of the lens 2 of the total station 1, at this time, the heating wire 19 in the cavity is started, so that the heating wire 19 heats the water in the cavity, when the sliding rod 8 moves with the guide block 12, because the guide block 12 and the stirring block 20 are magnetic materials, so that the guide block 12 will attract the stirring block 20 when moving, so that the stirring block 20 moves to the direction of the guide block 12, the stirring block 20 will stir the water in the cavity when moving, so that the water in the cavity can be uniformly heated, avoiding the situation that the water around the heating wire 19 has been heated, and the water far away is difficult to heat, when the hot water in the cavity is sprayed out, it can quickly melt the frost on the lens 2, and soften the cleaning pad 9, avoiding the situation that the frost on the lens 2 and the frozen cleaning pad 9 scratch the lens 2, playing a role of protecting the lens 2.

[0035] The above front, back, left, right, up and down are based on the drawings in the specification Figure 1 As the standard of the human observation angle, the side of the device facing the observer is defined as front, the left side of the observer is defined as left, and the like.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0037] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A bridge prestressing observation device based on BIM, comprising a BIM-based total station (1) and a lens (2), wherein the lens (2) is provided on one side of the total station (1), and a BIM module (3) is fixedly installed on the top of the total station (1); characterized in that: A collar (4) is fixedly installed on the side of the total station (1) near the lens (2). A notch is opened at the top of the collar (4). An end cap (5) is rotatably connected inside the notch of the collar (4). An elastic membrane (6) is fixedly installed on the side of the total station (1) near the lens (2). A base (7) is fixedly installed at the bottom of the elastic membrane (6). The end of the base (7) away from the elastic membrane (6) is fixedly connected to the total station (1). The base (7) and the elastic membrane (6) form a sealed cavity. A sliding rod (8) is slidably connected to the inner wall of the base (7). The two ends of the sliding rod (8) are respectively in the cavity and the collar (4). A cleaning pad (9) is fixedly installed at the bottom of the sliding rod (8). A spring (10) is fixedly sleeved on the surface of the sliding rod (8). The other end of the spring (10) is fixedly connected to the base (7). The end cap (5) is rotatably connected to a roller (11) on the side away from the lens (2), and an arc-shaped guide block (12) is fixedly installed on the top of the sliding rod (8). The cavity formed by the elastic membrane (6) and the base (7) is pre-filled with water. A guide hole (13) is opened on the surface of the sliding rod (8). The guide hole (13) passes through the sliding rod (8). An arc-shaped guide plate (14) is fixedly installed at the outlet of the guide hole (13). The sliding rod (8) has a connecting hole (15) inside. The bottom of the connecting hole (15) has multiple water outlets. The top of the connecting hole (15) is connected to the guide hole (13). The bottom of the connecting hole (15) extends into the cleaning pad (9). The connecting hole (15) is connected to an electric control valve (16). The collar (4) corresponding to the bottom of the sliding rod (8) is equipped with a push-type switch that cooperates with the electric control valve (16). A heating wire (19) is fixedly installed on the side of the total station (1) near the lens (2). The heating wire (19) is located in the cavity formed by the base (7) and the elastic membrane (6). The guide block (12) is made of magnetic material. An elastic rope (21) is fixedly installed on the inner wall of the base (7). A stirring block (20) made of magnetic material is fixedly installed at the other end of the elastic rope (21).

2. The bridge prestressing monitoring device based on BIM according to claim 1, characterized in that: The cleaning pad (9) and the sliding rod (8) are fixedly connected by an "L"-shaped welding block (37). A hollow elastic block (38) is fixedly installed inside the cleaning pad (9). The cross-section of the lens (2) is inclined.

Images