All -round camera for building

Abstract

This invention belongs to the field of camera technology, and particularly relates to a special omnidirectional camera for construction, comprising an annular housing, a hemispherical glass cover fixedly connected to the lower end of the annular housing, a cover fixedly connected to the upper end of the annular housing, a connecting cylinder coaxially fixedly connected to the upper end of the cover and communicating with the annular housing, a rotating ring rotatably connected to the inner peripheral wall of the annular housing, a U-shaped frame fixedly connected to the inner side of the rotating ring, a rotating shaft block fixedly connected to the lower end of the U-shaped frame, the lower end of the rotating shaft block penetrating through the center of the inner bottom wall of the glass cover and rotatably connected thereto, and a camera body installed inside the U-shaped frame. The advantages are: this invention integrates multiple functions such as monitoring, self-cleaning, and anti-tangling within a limited space, which can significantly improve the continuous working capability and image quality of construction site monitoring systems, and has high practical value and promising prospects for promotion.

Description

Technical Field

[0001] This invention relates to the field of camera technology, and in particular to a special omnidirectional camera for building applications. Background Technology

[0002] Cameras are increasingly used in the construction industry for real-time monitoring of site safety, construction progress, equipment status, and personnel activities. Construction site environments are typically harsh, with large amounts of dust, mud, rainwater, and other pollutants that easily adhere to the surface of camera housings, leading to blurred images and reduced monitoring effectiveness. This is especially true for fixed cameras, whose lens orientation is limited, making it difficult to provide comprehensive coverage of the complex and ever-changing construction site.

[0003] In existing technologies, camera cleaning largely relies on regular manual wiping or the addition of simple wiper mechanisms. However, manual cleaning is inefficient and poses safety hazards, while ordinary automatic cleaning mechanisms are often simple in structure and have limited cleaning effects, making it difficult to cope with the high intensity and diverse types of pollution at construction sites. In addition, to achieve all-around monitoring, some cameras use a pan-tilt-zoom (PTZ) structure, but after prolonged operation, the cables are prone to tangling, and the cleaning mechanism during rotation may conflict with the lens's field of view, affecting the continuity of monitoring.

[0004] To address the above issues, we propose a special omnidirectional camera for buildings. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing a special omnidirectional camera for buildings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a building-specific omnidirectional camera, comprising an annular housing, a hemispherical glass cover fixedly connected to the lower end of the annular housing, a shell cover fixedly connected to the upper end of the annular housing, a connecting cylinder coaxially fixedly connected to the upper end of the shell cover and communicating with the annular housing, a rotating ring rotatably connected to the inner peripheral wall of the annular housing, a U-shaped frame fixedly connected to the inner side of the rotating ring, a rotating shaft block fixedly connected to the lower end of the U-shaped frame, the lower end of the rotating shaft block penetrating through the center of the inner bottom wall of the glass cover and rotatably connected thereto, a camera body installed inside the U-shaped frame, and a conduit provided above the camera body, the conduit penetrating the shell cover and extending into the connecting cylinder; The annular shell is equipped with a cleaning mechanism, which includes a rotating sleeve rotatably connected to a connecting cylinder. A first scraper and a second scraper are provided on the outer side of the annular shell. A collar is rotatably sleeved at one end of the rotating shaft block located outside the glass cover. The lower end of the first scraper is fixedly connected to the rotating shaft block, and the lower end of the second scraper is fixedly connected to the collar. A first connecting rod is fixedly connected between the upper end of the first scraper and the rotating sleeve. The upper end of the second scraper is connected to the rotating sleeve through a sliding mechanism. A rubber scraper that fits against the glass cover is fixedly connected to the inner side of the first scraper, and a sponge scraper that fits against the glass cover is fixedly connected to the inner side of the second scraper.

[0007] In the aforementioned omnidirectional camera for building applications, the rotating sleeve is provided with gear teeth, and a first motor is fixedly installed at the lower end of the shell cover. The output end of the first motor passes through the shell cover and is coaxially fixedly connected to a first gear. The first gear meshes with the rotating sleeve through its gear teeth.

[0008] In the aforementioned omnidirectional camera for building applications, an annular groove is provided on the rotating shaft block and inside the collar. A torsion spring is provided in the annular groove, with one end of the torsion spring fixedly connected to the annular groove and the other end fixedly connected to the inner wall of the collar.

[0009] In the aforementioned omnidirectional camera for building applications, the sliding mechanism includes two arc-shaped limiting frames fixedly connected to the outer circumferential surface of the rotating sleeve and spaced apart vertically. A sliding rod is slidably connected between the two limiting frames, and a slider is fixedly connected to the sliding rod. A second connecting rod is fixedly connected between the slider and the second scraper.

[0010] In the aforementioned omnidirectional building camera, a mounting plate is fixedly connected to the upper end of the connecting cylinder, and four right-angle positioning frames arranged in a rectangular pattern are fixedly connected to the upper end of the mounting plate.

[0011] In the aforementioned omnidirectional building camera, a rotating ring concentrically connected to the lower end of the mounting plate is rotatably connected to the connecting cylinder. The outer circumference of the rotating ring is provided with gear teeth. A second motor is fixedly mounted on the upper end of the mounting plate. The output end of the second motor passes through the mounting plate and is coaxially fixedly connected to a second gear. The second gear meshes with the rotating ring through its gear teeth. A telescopic rod is fixedly connected to the lower end of the rotating ring at a position corresponding to the second scraper. An end plate is fixedly connected to the lower end of the telescopic rod. A spring is fixedly connected between the end plate and the rotating ring. A push rod is fixedly connected to the lower end of the end plate. The lower end of the push rod has a rubber spherical surface. A slanted groove corresponding to the push rod's position is opened on the right side of the upper end of the second connecting rod. A contact block is fixedly connected to the lower end of the end plate at a position to the right of the push rod. An electric telescopic rod is fixedly mounted on the outer circumference of the connecting cylinder. A trapezoidal push block is fixedly connected to the telescopic end of the electric telescopic rod, and the push block corresponds to the contact block.

[0012] In the aforementioned omnidirectional building camera, an annular liquid storage tank is provided at the upper end of the annular housing. A rotating opening is provided at the upper end of the housing cover and at the corresponding position of the liquid storage tank. An annular ring is rotatably connected inside the rotating opening. A liquid pump is fixedly installed at the upper end of the annular ring. The upper end of the liquid pump is fixedly connected to a second connecting rod. The liquid inlet end of the liquid pump is connected to an inlet pipe. The end of the inlet pipe away from the liquid pump passes through the annular ring and extends to the liquid storage tank. The liquid outlet end of the liquid pump is connected to an outlet pipe. The end of the outlet pipe away from the liquid pump extends along the second scraper to above the sponge scraper. The impeller shaft of the liquid pump extends out of the liquid pump and is coaxially fixedly connected to a roller. An annular rolling pad is fixedly connected to the upper end of the housing cover. The roller and the rolling pad are in rolling contact.

[0013] Compared with existing technologies, the advantages of this invention are: This invention utilizes a dual-scraper cleaning mechanism (rubber scraper and sponge scraper) to simultaneously clean the glass cover surface while the camera rotates and monitors the process. The sponge scraper, combined with an automatic liquid supply system (liquid tank, pump, and outlet pipe), continuously applies cleaning fluid, achieving a deep cleaning process of "dry scraping followed by wet wiping," effectively removing stubborn stains such as dust and mud. The liquid pump is mechanically driven by the camera's rotation, requiring no additional electricity and ensuring energy efficiency and reliability. The entire cleaning process is fully automated, significantly reducing the frequency and cost of manual maintenance, making it particularly suitable for high-dust construction environments.

[0014] The camera body achieves omnidirectional rotation within its annular housing via a rotating ring and U-shaped frame. Controlled by a first motor, this periodic rotation provides omnidirectional monitoring while preventing cable tangling through reciprocating motion. The first and second scraper bars in the cleaning mechanism are maintained at a fixed angle by torsion springs, ensuring they remain outside the camera lens's field of view and do not obstruct the monitoring view during cleaning. Simultaneously, the second motor, push rod, and inclined groove allow for independent rotation and reset of the second scraper bar, enabling targeted, localized cleaning. The electric telescopic rod and push block ensure the cleaning mechanism avoids interference when the camera rotates in the opposite direction, guaranteeing that monitoring and cleaning operations do not interfere with each other.

[0015] The camera adopts a modular design, with its main structure integrated into a ring-shaped housing and connecting cylinder. Externally, it achieves quick and secure installation via a mounting plate and right-angle positioning bracket, adapting to various mounting surfaces in architectural settings (such as walls and brackets). All moving parts (such as the rotating sleeve and rotating ring) are driven by gears, ensuring stable power transmission. The linkage design between the cleaning mechanism and the camera is rational, utilizing mechanical structures to achieve multi-functional coordination, reducing reliance on electrical components and lowering the failure rate. The liquid storage tank has a replenishment port for easy filling and replacement of cleaning fluid, simplifying maintenance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of a building-specific omnidirectional camera proposed in this invention; Figure 2 This is a stereoscopic view of another perspective of a building-specific omnidirectional camera proposed in this invention; Figure 3 This is a partial three-dimensional view of a building-specific omnidirectional camera proposed in this invention; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the cleaning mechanism in a building-specific omnidirectional camera proposed in this invention; Figure 6 This is a schematic diagram of the structure of the camera body in a building-specific omnidirectional camera proposed in this invention; Figure 7 This is a schematic diagram of the mounting plate in a building-specific omnidirectional camera proposed in this invention; Figure 8 for Figure 7 Enlarged structural diagram at point B; Figure 9 This is a cross-sectional view of the rotating shaft block in a building-specific omnidirectional camera proposed in this invention.

[0017] In the diagram: 1. Annular shell, 2. Glass cover, 3. Shell cover, 4. Connecting cylinder, 5. Rotating ring, 6. U-shaped frame, 7. Rotating shaft block, 8. Camera body, 9. Conduit, 10. Rotating sleeve, 11. First scraper, 12. Second scraper, 13. Collar ring, 14. First connecting rod, 15. Limiting frame, 16. Sliding rod, 17. Second connecting rod, 18. Rubber scraper strip, 19. Sponge scraper strip, 20. First gear, 21. Annular groove, 22. Torsion spring, 23. Mounting plate, 24. Right angle positioning frame, 25. Rotating ring, 26. Second motor, 27. Second gear, 28. Telescopic rod, 29. End plate, 30. Spring, 31. Push rod, 32. Inclined groove, 33. Contact block, 34. Electric telescopic rod, 35. Push block, 36. Liquid storage tank, 37. Annular ring, 38. Liquid pump, 39. Roller, 40. Liquid inlet pipe, 41. Liquid outlet pipe. Detailed Implementation

[0018] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] Reference Figures 1-9A special omnidirectional camera for construction includes an annular housing 1. A hemispherical glass cover 2, made of transparent tempered glass, is fixedly connected to the lower end of the annular housing 1 for protection. A cover 3 is fixedly connected to the upper end of the annular housing 1. A connecting cylinder 4, communicating with the annular housing 1, is coaxially fixedly connected to the upper end of the cover 3. A rotating ring 5 is rotatably connected to the inner circumferential wall of the annular housing 1. A U-shaped frame 6 is fixedly connected to the inner side of the rotating ring 5. A rotating shaft block 7 is fixedly connected to the lower end of the U-shaped frame 6. The lower end of the rotating shaft block 7 passes through the center of the inner bottom wall of the glass cover 2 and is rotatably connected to it. A camera body 8 is installed inside the U-shaped frame 6. The camera body 8 is existing technology and is used for environmental monitoring in construction. The camera body 8 can rotate omnidirectionally within the annular housing 1 through the rotating ring 5, thereby monitoring in all directions. A conduit 9 is provided above the camera body 8. The conduit 9 passes through the cover 3 and extends into the connecting cylinder 4. The conduit 9 is used for the protection of the wiring of the camera body 8 and to prevent cable tangling during rotation. A mounting plate 23 is fixedly connected to the upper end of the connecting cylinder 4. Four right-angle positioning brackets 24 arranged in a rectangular pattern are fixedly connected to the upper end of the mounting plate 23 for the installation and fixing of this camera.

[0020] The annular housing 1 is provided with a cleaning mechanism, which includes a rotating sleeve 10 rotatably connected to the connecting cylinder 4. The rotating sleeve 10 is provided with gear teeth. A first motor is fixedly installed at the lower end of the housing cover 3. The output end of the first motor passes through the housing cover 3 and is coaxially fixedly connected to a first gear 20. The first gear 20 meshes with the rotating sleeve 10 through its gear teeth. The first motor can drive the first gear 20 to rotate the rotating sleeve 10.

[0021] The outer side of the annular housing 1 is provided with a first scraper 11 and a second scraper 12. The end of the rotating shaft block 7 located outside the glass cover 2 is rotatably sleeved with a collar 13. The lower end of the first scraper 11 is fixedly connected to the rotating shaft block 7, and the lower end of the second scraper 12 is fixedly connected to the collar 13. The upper end of the first scraper 11 is fixedly connected to the rotating sleeve 10 with a first connecting rod 14. The upper end of the second scraper 12 is connected to the rotating sleeve 10 through a sliding mechanism. Both the first scraper 11 and the second scraper 12 rotate with the rotation of the rotating sleeve 10. When the rotating sleeve 10 rotates, the rotating shaft block 7 also rotates under the connecting action of the first scraper 11, thereby causing the camera body 8 located inside the annular housing 1 to rotate together. As can be seen from the above settings, the monitoring position of the camera body 8 can be controlled by the first motor. It should be noted that the first motor is a stepper motor, which can control the camera body 8 to rotate periodically. Each rotation angle is 90 degrees, and after rotating one revolution, it rotates in the opposite direction to the initial position, and then rotates periodically again. This ensures that the wiring of the camera body 8 will not get tangled and ensures that the camera body 8 can effectively perform all-round monitoring of the surrounding environment.

[0022] A rubber scraper 18 that fits against the glass cover 2 is fixedly connected to the inner side of the first scraper 11, and a sponge scraper 19 that fits against the glass cover 2 is fixedly connected to the inner side of the second scraper 12. Both the rubber scraper 18 and the sponge scraper 19 are used for cleaning the surface of the glass cover 2. When the first motor drives the camera body 8 to rotate, the first scraper 11 and the second scraper 12 rotate synchronously, thereby using the rubber scraper 18 and the sponge scraper 19 to scrape off and clean the dust on the surface of the glass cover 2.

[0023] An annular groove 21 is provided on the rotating shaft block 7 and inside the collar 13. A torsion spring 22 is provided in the annular groove 21. One end of the torsion spring 22 is fixedly connected to the annular groove 21 and the other end is fixedly connected to the inner wall of the collar 13. It should be noted that the angle between the first scraper 11 and the second scraper 12 is 90 degrees. The setting of the torsion spring 22 ensures that the angle between the first scraper 11 and the second scraper 12 remains unchanged when not affected by a certain external force. The lens of the camera body 8 is positioned between the two, so that when the camera body 8 is rotated, the first scraper 11 and the second scraper 12 do not affect the viewing angle of the camera body 18.

[0024] The sliding mechanism includes two arc-shaped limiting frames 15 fixedly connected to the outer circumference of the rotating sleeve 10 and spaced vertically. A sliding rod 16 is slidably connected between the two limiting frames 15. A slider is fixedly connected to the sliding rod 16, and a second connecting rod 17 is fixedly connected between the slider and the second scraper 12. The sliding mechanism allows the second scraper 12 to rotate along the limiting frame 15 with the collar 13 as the center. In the initial state, the second connecting rod 17 is located at the rightmost end. When rotated clockwise, the torsion spring 22 is twisted. The second connecting rod 17 is positioned higher than the first connecting rod 14.

[0025] The lower end of the mounting plate 23 is rotatably connected to a rotating ring 25 concentrically set with the connecting cylinder 4. The outer circumference of the rotating ring 25 is provided with gear teeth. The upper end of the mounting plate 23 is fixedly mounted with a second motor 26. The output end of the second motor 26 passes through the mounting plate 23 and is coaxially fixedly connected with a second gear 27. The second gear 27 meshes with the rotating ring 25 through its gear teeth. The lower end of the rotating ring 25 is fixedly connected with a telescopic rod 28 at the corresponding position of the second scraper 12. The lower end of the telescopic rod 28 is fixedly connected with an end plate 29. A spring 30 is fixedly connected between the end plate 29 and the rotating ring 25. The lower end of the end plate 29 is fixedly connected with a push rod 31. The lower end of the push rod 31 is provided with a rubber ball surface. The upper right side of the second connecting rod 17 is provided with an inclined groove 32 corresponding to the position of the push rod 31. Specifically, the staff can remotely control the second motor 26 to drive the rotating ring 25 to rotate clockwise one revolution via the second gear 27. During the rotation, the push rod 31 rotates into the inclined groove 32, and the friction generated by the two pushes the second connecting rod 17, causing the second scraper 12 to rotate clockwise through the sliding mechanism. During the rotation, the sponge scraper 19 cleans the glass cover 2 once. When the second scraper 12 rotates to the leftmost position, the push rod 31 slides relative to the inclined groove 32 under the action of the pushing force. The push rod 31 moves upward, and the compression spring 30 causes the telescopic rod 28 to retract, thus sliding past the second connecting rod 17 and returning to the initial position after completing one revolution. The second scraper 12 then rotates counterclockwise under the action of the torsion spring 22, returning to the initial position.

[0026] A contact block 33 is fixedly connected to the lower end of the end plate 29 and to the right of the push rod 31. An electric telescopic rod 34 is fixedly installed on the outer circumference of the connecting cylinder 4. A push block 35 with a trapezoidal cross-section is fixedly connected to the telescopic end of the electric telescopic rod 34. The push block 35 and the contact block 33 are positioned correspondingly. The arrangement of the push block 35 and the electric telescopic rod 34 allows the electric telescopic rod 34 to extend when the camera completes a full-range periodic rotation and rotates back to the initial position. The inclined surface of the push block 35 contacts the contact block 33 and pushes it upward, thereby driving the end plate 29 to move upward. This moves the lower end of the push rod 31 to above the second connecting rod 17, so that the second connecting rod 17, which rotates in the opposite direction with the camera body 8, will not be contacted or affected by the push rod 31, ensuring effective reset.

[0027] An annular liquid storage tank 36 is provided at the upper end of the annular shell 1. A rotating opening is provided at the upper end of the shell cover 3 at the corresponding position of the liquid storage tank 36. An annular ring 37 is rotatably connected inside the rotating opening. A liquid pump 38 is fixedly installed at the upper end of the annular ring 37. The upper end of the liquid pump 38 is fixedly connected to the second connecting rod 17. The liquid inlet end of the liquid pump 38 is connected to a liquid inlet pipe 40. The end of the liquid inlet pipe 40 away from the liquid pump 38 passes through the annular ring 37 and extends to the liquid storage tank 36. The liquid outlet end of the liquid pump 38 is connected to a liquid outlet pipe 41. The liquid outlet pipe 41 is located away from the liquid pump. One end of pump 38 extends along the second scraper 12 to above the sponge scraper 19. The impeller shaft of pump 38 extends out of pump 38 and is coaxially fixedly connected to roller 39. An annular rolling pad is fixedly connected to the upper end of the cover 3. Roller 39 rolls in contact with the rolling pad. Specifically, the liquid storage tank 36 is used to store glass cleaner. In dusty construction environments, dust and impurities easily adhere to the glass cover 2, affecting the monitoring effect. The cleaning liquid can effectively remove dust and dirt, ensuring the cleanliness of the glass cover 2 surface for a certain period of time. During the rotation of the camera body 8, roller 39 rotates in contact with the rolling pad, thereby driving the impeller to rotate even without power. This causes pump 38 to automatically draw out the cleaning liquid from the liquid storage tank 36 and discharge it onto the sponge scraper 19, wetting the sponge scraper 19 and attaching it with the cleaning liquid. Thus, during the sliding contact with the surface of the glass cover 2, the cleaning work can be effectively completed, removing stubborn stains and ensuring the monitoring effect.

[0028] The annular ring 37 is provided with an exhaust port. When the roller 39 rotates in the reverse direction, air is introduced into the liquid storage tank 36, and the exhaust port effectively expels the air. The annular housing 1 is provided with a replenishment port for replenishing cleaning fluid.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A special-purpose all-around camera for buildings, comprising a ring-shaped casing (1), characterized in that, The lower end of the annular shell (1) is fixedly connected to a hemispherical glass cover (2), the upper end of the annular shell (1) is fixedly connected to a shell cover (3), the upper end of the shell cover (3) is coaxially fixedly connected to a connecting cylinder (4) communicating with the annular shell (1), a rotating ring (5) is rotatably connected to the inner circumferential wall of the annular shell (1), a U-shaped frame (6) is fixedly connected to the inner side of the rotating ring (5), a rotating shaft block (7) is fixedly connected to the lower end of the U-shaped frame (6), the lower end of the rotating shaft block (7) penetrates the center position of the inner bottom wall of the glass cover (2) and is rotatably connected to it, a camera body (8) is installed inside the U-shaped frame (6), a wire tube (9) is provided above the camera body (8), the wire tube (9) penetrates the shell cover (3) and extends into the connecting cylinder (4); The annular shell (1) is provided with a cleaning mechanism, which includes a rotating sleeve (10) rotatably connected to the connecting cylinder (4). The annular shell (1) is provided with a first scraper (11) and a second scraper (12) on the outside. The rotating shaft block (7) is rotatably sleeved with a collar (13) at one end outside the glass cover (2). The lower end of the first scraper (11) is fixedly connected to the rotating shaft block (7), and the lower end of the second scraper (12) is fixedly connected to the collar (13). The upper end of the first scraper (11) is fixedly connected to the rotating sleeve (10) with a first connecting rod (14). The upper end of the second scraper (12) is connected to the rotating sleeve (10) through a sliding mechanism. The inner side of the first scraper (11) is fixedly connected with a rubber scraper (18) that fits against the glass cover (2), and the inner side of the second scraper (12) is fixedly connected with a sponge scraper (19) that fits against the glass cover (2).

2. The all-around camera for building according to claim 1, wherein, The rotating sleeve (10) is provided with gear teeth, and the lower end of the shell cover (3) is fixedly installed with a first motor. The output end of the first motor passes through the shell cover (3) and is coaxially fixedly connected with a first gear (20). The first gear (20) meshes with the rotating sleeve (10) through its gear teeth.

3. The all-around camera for building according to claim 1, wherein, An annular groove (21) is provided on the rotating shaft block (7) and inside the collar (13). A torsion spring (22) is provided in the annular groove (21). One end of the torsion spring (22) is fixedly connected to the annular groove (21) and the other end is fixedly connected to the inner wall of the collar (13).

4. The all-around camera for building according to claim 1, wherein, The sliding mechanism includes two arc-shaped limiting frames (15) fixedly connected to the outer circumferential surface of the rotating sleeve (10) and distributed vertically at intervals. A sliding rod (16) is slidably connected between the two limiting frames (15). A slider is fixedly connected to the slider (16), and a second connecting rod (17) is fixedly connected between the slider and the second scraper (12).

5. The all-around camera for building according to claim 1, wherein, The upper end of the connecting cylinder (4) is fixedly connected to an installation plate (23), and the upper end of the installation plate (23) is fixedly connected to four right-angle positioning frames (24) arranged in a rectangular pattern.

6. The all-around camera for building according to claim 5, wherein, The lower end of the mounting plate (23) is rotatably connected to a rotating ring (25) concentrically arranged with the connecting cylinder (4). The outer circumferential surface of the rotating ring (25) is provided with gear teeth. The upper end of the mounting plate (23) is fixedly mounted with a second motor (26). The output end of the second motor (26) passes through the mounting plate (23) and is coaxially fixedly connected to a second gear (27). The second gear (27) meshes with the rotating ring (25) through its gear teeth. The lower end of the rotating ring (25) is fixedly connected to a telescopic rod (28) at the corresponding position of the second scraper (12). The lower end of the telescopic rod (28) is fixedly connected to an end plate (29). A spring (30) is fixedly connected to the rotating ring (25). A push rod (31) is fixedly connected to the lower end of the end plate (29). The lower end of the push rod (31) is provided with a rubber spherical surface. A slanted groove (32) corresponding to the position of the push rod (31) is opened on the right side of the upper end of the second connecting rod (17). A contact block (33) is fixedly connected to the lower end of the end plate (29) and to the right side of the push rod (31). An electric telescopic rod (34) is fixedly installed on the outer circumference of the connecting cylinder (4). A push block (35) with a trapezoidal cross section is fixedly connected to the telescopic end of the electric telescopic rod (34). The push block (35) and the contact block (33) are in the same position.

7. The all-around camera for building according to claim 5, wherein, The annular housing (1) has an annular liquid storage tank (36) at its upper end. The housing cover (3) has a rotating opening at its upper end and at the corresponding position of the liquid storage tank (36). An annular ring (37) is rotatably connected inside the rotating opening. A liquid pump (38) is fixedly installed at the upper end of the annular ring (37). The upper end of the liquid pump (38) is fixedly connected to the second connecting rod (17). The liquid inlet end of the liquid pump (38) is connected to a liquid inlet pipe (40). The end of the liquid inlet pipe (40) away from the liquid pump (38) is connected to the liquid inlet pipe (40). A liquid pump (38) is provided with a liquid outlet pipe (41) connected to the liquid outlet end of the liquid pump (38) and extending to the liquid storage tank (36). The end of the liquid outlet pipe (41) away from the liquid pump (38) extends along the second scraper (12) to the top of the sponge scraper (19). The impeller shaft of the liquid pump (38) extends out of the liquid pump (38) and is coaxially fixedly connected to a roller (39). An annular rolling pad is fixedly connected to the upper end of the shell cover (3). The roller (39) makes rolling contact with the rolling pad.

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