Photographing auxiliary device for structure bottom inspection

Abstract

The invention relates to the technical field of structure inspection equipment, and discloses a photographing auxiliary device for structure bottom inspection, which comprises a carrying tool, a camera and a connecting arm, the connecting arm is bent when used, the two ends, away from each other, of the connecting arm are connected with the carrying tool and the camera respectively, and a receding cavity allowing an inspection structure to enter is formed between the two ends, away from each other, of the connecting arm. According to the invention, the balance between the flexibility and economy of the structure bottom inspection work can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of structural inspection equipment, and in particular to a photographing auxiliary device for structural bottom inspection. Background Art

[0002] Structural inspection plays a vital role in the engineering field. It not only provides the necessary basis for the use, maintenance and reinforcement of the structure, but also can detect potential safety hazards at an early stage, thereby improving the safety and service life of the overall structure. Commonly used inspection methods such as personnel surveys are usually combined with different tools to meet the needs of different inspection conditions.

[0003] Commonly used inspection tools usually include bridge inspection vehicles, articulated boom trucks, stairs and drones. Bridge inspection vehicles and articulated boom trucks are suitable for large-span structures, large structural dimensions, high net depths and complex bottom environments. These tools can provide greater flexibility and operating space, but their structures are complex and costly, and they are not cost-effective in small structure inspections, and they cannot be deployed in small spaces. Stairs are suitable for simple structures, low net depths and good bottom environments, but when the structure is large or the net depth is high, the length of the stairs is limited, making it difficult to reach the inspection site and difficult to meet the needs. Although drones can achieve more flexible shooting in complex environments and are suitable for situations where the structure has a high net depth and a complex environment, they have higher costs and shorter flight times, are less economical and are not suitable for long-term operations.

[0004] Therefore, existing conventional inspection methods have certain limitations when encountering situations where the structure size is small and the inspection environment is complex, making it difficult to balance the flexibility and economy of the bottom structure inspection work. Summary of the invention

[0005] In order to improve the balance between flexibility and economy of structure bottom inspection work, the present application provides a photography auxiliary device for structure bottom inspection.

[0006] The present application provides a photographing auxiliary device for bottom inspection of a structure, which adopts the following technical solution: A photography auxiliary device for inspecting the bottom of a structure comprises: a backpack, a connecting arm and a camera; the connecting arm is bent when in use, and two ends of the connecting arm that are far away from each other are respectively connected to the backpack and the camera, and a clearance cavity is formed between the two ends of the connecting arm for the inspection structure to enter.

[0007] By adopting the above technical solution, the connecting arm can extend one end of the connecting arm with the camera to the bottom of the structure through the yield cavity, and then the inspector can carry the backpack on his back and walk to move, so as to drive the connecting arm and the camera to move together, and realize flexible and economical inspection of the bottom of the structure without using complex and costly bridge inspection vehicles, articulated boom vehicles and other equipment. Inspectors can easily enter small structures with complex inspection environments, which improves the flexibility and convenience of inspection and reduces the cost of inspection.

[0008] Optionally, the camera can rotate on its own.

[0009] By adopting the above technical solution, the camera can further enhance the flexibility and comprehensiveness of the inspection. Inspectors can control the rotation of the camera to take photos of the bottom of the structure at different angles, thereby improving the efficiency and accuracy of the inspection.

[0010] Optionally, the connecting arm comprises a first rod, a second rod and a third rod connected in sequence, one end of the first rod away from the second rod is connected to the backpack, and one end of the third rod away from the second rod is connected to the camera; the first rod and the second rod and the second rod and the third rod are both hingedly arranged, so that the connecting arm can be deformed to a folded storage state and an unfolded use state; When the connecting arm is in a folded storage state, the first rod, the second rod and the third rod are overlapped with each other; when the connecting arm is in an unfolded use state, the second rod is bent relative to the first rod and the third rod.

[0011] By adopting the above technical solution, the connecting arm can be folded to reduce its volume when not in use for easy carrying, and unfolded to form a clearance cavity for the inspection structure to enter when in use, thereby improving the flexibility and economy of the photography auxiliary device in complex inspection environments.

[0012] Optionally, the extension length of the second rod can be adjusted.

[0013] By adopting the above technical solution, the extendable length of the second rod can further enhance the adaptability and flexibility of the device. The inspector can adjust the length of the second rod according to actual needs to adjust the size of the clearance cavity so that the device can adapt to structures of different thicknesses and sizes.

[0014] Optionally, the third rod member includes a plurality of adjustment rods slidably mounted in sequence, and a first elastic member is provided between two adjacent sections of the adjustment rod. The first elastic member provides an elastic force for the adjustment rod at one end away from the second rod member to move in a direction away from the second rod member, and an adjustment member is provided between the first rod member and the third rod member, and the adjustment member is used to adjust the relative positions between the adjustment rods.

[0015] By adopting the above technical solution, the combination of the adjustment rod, the first elastic member and the adjustment member enables the camera to adjust its position within a certain range, thereby reducing the need for inspectors to walk and move, thereby improving the stability of the captured image.

[0016] Optionally, the adjusting member includes an adjuster and a pull rope, the adjuster is rotatably connected to the first rod, one end of the pull rope is rolled up on the adjuster, and one end of the pull rope away from the adjuster is connected to the adjusting rod farthest from the second rod among all the adjusting rods.

[0017] By adopting the above technical solution, through the combination of the adjuster and the pull rope, the inspector can conveniently control the third rod to adjust the length during inspection, so as to improve the convenience of adjusting the length of the third rod.

[0018] Optionally, the backpack includes a back frame and shoulder straps, the back frame has two shoulder straps, and the two shoulder straps are respectively connected to opposite sides of the backpack; a bracket is connected between the back frame and the first rod, and the first rod and the bracket are detachably connected.

[0019] By adopting the above technical solution, the inspector carries the backpack on his back by means of the shoulder straps, and the convenience of storing the device and replacing parts is improved by means of the detachable connection between the bracket and the first rod.

[0020] Optionally, the bracket has a movable part extending into the back frame, the movable part moves in the back frame along the height direction of the back frame, the back frame has a second elastic member that gives the movable part an elastic force to move downward, and the back frame also has a positioning mechanism for adjusting the position of the movable part in the height direction of the back frame.

[0021] By adopting the above technical solution, the combination of the movable part of the bracket and the second elastic member enables the inspector to adjust the height of the camera after putting on the backpack, thereby adjusting the distance between the camera and the bottom of the structure to achieve the required shooting distance, so as to improve the clarity and accuracy of the shooting.

[0022] Optionally, the positioning mechanism includes A position adjustment seat, mounted on a side of the back frame away from the support; A winding wheel, rotatably connected to the back frame; A traction rope, one end of which is connected to the moving part and the other end of which is wound on the winding wheel; and An operating shaft has one end threadedly connected to the position adjustment seat and extending out of the position adjustment seat, and the other end opposite thereto slides in the winding wheel along the axial direction of the winding wheel.

[0023] By adopting the above technical solution, the inspector can realize the retraction and extension of the traction rope and the up and down movement of the moving part by rotating the operating shaft, thereby improving the efficiency of adjustment.

[0024] Optionally, the positioning mechanism also includes A sliding seat, axially sliding in the operating shaft along the operating shaft, and capable of coaxially rotating in the operating shaft; A gripping rod connected to the sliding seat and extending radially along the operating shaft to the outside of the operating shaft and opposite to the end of the adjusting seat; and A third elastic member is installed in the operating shaft and connected to the sliding seat to give the sliding seat an elastic force to move toward the adjustment seat; Among them, the operating shaft is provided with a first sliding groove for the grip rod to slide along its own axial direction, and the operating shaft is provided with a second sliding groove for the grip rod to slide at one end of the first sliding groove away from the back frame, and the second sliding groove extends circumferentially along the operating shaft; the end of the adjustment seat away from the back frame is provided with a plurality of anti-rotation grooves for the grip rod to resist against along the circumference of the operating shaft.

[0025] By adopting the above technical solution, the combination of the grip rod, the sliding seat and the third elastic member enables the operating shaft to be automatically locked in the anti-rotation groove when no rotation is required, thereby reducing the occurrence of accidental rotation.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. The photography auxiliary device has a simple structure, low manufacturing cost, and is easy to use. It can replace bridge inspection vehicles and articulated boom vehicles to inspect the bottom of structures when the structure size is small and the inspection environment is complex, effectively improving the inspection efficiency and quality; 2. The device adopts a foldable connecting arm design, which can be transformed between the folded storage state and the unfolded use state, making it easy to carry and use and adapt to a variety of inspection environments; 3. The camera can rotate by itself to improve the flexibility of taking pictures at the bottom of the structure and meet the inspection needs in complex environments at the bottom of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of Embodiment 1 of the present application; Figure 2is a schematic diagram of an exploded structure of a bracket and a first rod member in an embodiment of the present application; Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 4 is a schematic diagram of the explosion structure of the second rod in the first embodiment of the present application; Figure 5 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle; Figure 6 is a perspective view of the third rod in the first embodiment of the present application; Figure 7 yes Figure 1 Schematic diagram of the enlarged structure at C in the middle; Figure 8 It is a structural diagram of Embodiment 2 of the present application; Fig. 9 is a perspective view of the backpack in the second embodiment of the present application; Fig.10 It is a structural schematic diagram of the position adjustment mechanism after the position adjustment seat is cut in the second embodiment of the present application; Fig.11 yes Fig.10 Schematic diagram of the enlarged structure at D in the middle.

[0028] Description of reference numerals: 1. backpack; 101. backpack frame; 1011. vertical rod; 1012. diagonal rod; 102. shoulder strap; 2. camera; 3. connecting arm; 31. first rod; 32. second rod; 321. hinged rod; 322. connecting rod; 33. third rod; 331. adjusting rod; 4. clearance cavity; 5. first elastic member; 6. adjusting member; 61. adjuster; 62. drawstring; 7. bracket; 71. first connecting rod; 72. second connecting rod; 73 , the third connecting rod; 8, the moving part; 9, the adjusting mechanism; 91, the adjusting seat; 92, the winding wheel; 93, the traction rope; 94, the operating shaft; 941, the matching section; 942, the connecting section; 95, the sliding seat; 96, the gripping rod; 97, the third elastic member; 10, the second elastic member; 11, the first sliding groove; 12, the second sliding groove; 13, the anti-rotation groove; 14, the limiting rod; 15, the waist-shaped hole; 16, the positioning convex; 17, the limiting seat; 18, the moving groove; 19, the convex strip. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-11 This application is described in further detail.

[0030] Embodiment 1: The present application embodiment discloses a photographing auxiliary device for bottom inspection of a structure. Figure 1The photo assisting device for inspecting the bottom of a structure comprises a backpack 1, a bracket 7, a connecting arm 3 and a camera 2. The bracket 7 is connected to one side of the backpack 1, and two ends of the connecting arm 3 that are far from each other are connected to the bracket 7 and the camera 2.

[0031] When in use, the connecting arm 3 is in a U-shaped structure to form a clearance cavity 4 for the structure to be inspected to enter. The end of the connecting arm 3 connected to the camera 2 is placed at the bottom of the structure, and the end of the connecting arm 3 connected to the bracket 7 is placed above the structure. The inspector wears the backpack 1 on his back, and the movement of the inspector drives the connecting arm 3 to move, thereby moving the position of the camera 2 to take pictures of the bottom of the structure.

[0032] Reference Figure 1 and Figure 2 Specifically, the backpack 1 includes a back frame 101 and a shoulder strap 102. The back frame 101 is used to support the entire photography auxiliary device, and the shoulder strap 102 is used to fix the backpack 1 on the user. The back frame 101 can be made of a lightweight alloy material, such as an aluminum alloy or a magnesium alloy, to reduce the total weight of the device. There are two shoulder straps 102, and the two shoulder straps 102 are respectively connected to the opposite sides of the back frame 101 to ensure that the device is evenly distributed on the user's shoulders, thereby improving comfort and stability. The shoulder strap 102 can be made of nylon webbing or polypropylene webbing to ensure its strength and durability. In addition, in order to improve comfort, soft pads, such as EVA foam or silicone pads, can be added to reduce the pressure of the shoulder strap 102 on the hand.

[0033] The back frame 101 adopts a frame structure, including two vertical rods 1011 and two oblique rods 1012. The two vertical rods 1011 are parallel to each other and extend vertically when in use. The two oblique rods 1012 are cross-arranged into an X shape and are integrally formed. The two ends of each oblique rod 1012 that are far away from each other are respectively fixed on the two vertical rods 1011 to connect the two vertical rods 1011.

[0034] The bracket 7 includes a first connecting rod 71, a second connecting rod 72 and a third connecting rod 73 whose ends are connected in sequence. The first connecting rod 71 is parallel to the vertical rod 1011 and is fixedly connected to one side of one of the vertical rods 1011. The second connecting rod 72 is perpendicular to the first connecting rod 71 and extends in the horizontal direction. The third connecting rod 73 extends in the horizontal direction and is perpendicular to the first connecting rod 71 and the second connecting rod 72 at the same time. The length extension direction of the third connecting rod 73 is parallel to the plate surface formed by the back frame 101. After the inspector puts on the backpack 1, the second connecting rod 72 extends to the front side of the inspector, and the third connecting rod 73 is located at the side of the inspector and extends away from the inspector.

[0035] Reference Figure 1The connecting arm 3 includes a first rod 31, a second rod 32, and a third rod 33 connected in sequence. The end of the first rod 31 away from the second rod 32 is connected to the third connecting rod 73, and the end of the third rod 33 away from the second rod 32 is connected to the camera 2. The first rod 31 and the second rod 32, as well as the second rod 32 and the third rod 33 are both hinged, so that the connecting arm 3 can be folded and stored and unfolded for use.

[0036] When the connecting arm 3 is deformed to the folded storage state, the first rod 31, the second rod 32 and the third rod 33 are close to each other and overlap. When the connecting arm 3 is deformed to the unfolded state, the first rod 31 and the third rod 33 are parallel to each other, and the second rod 32 is perpendicular to both the first rod 31 and the second rod 32.

[0037] Reference Figure 2 and Figure 3 , wherein the first rod 31 is in the shape of a hollow square tube, and the material can be stainless steel or carbon fiber tube to balance the lightness and strength of the rod. The end of the first rod 31 away from the second rod 32 is sleeved on the third connecting rod 73, so that the first rod 31 and the third connecting rod 73 extend in the same straight line direction. A quick disassembly mechanism is used between the first rod 31 and the third connecting rod 73 to achieve a detachable connection, which is convenient for storing and organizing the device. For example, a bolt-nut matching connection method or a snap-on connection method can be used. In this embodiment, it is preferred to use a bolt-nut matching connection method, specifically, the bolt is simultaneously passed through the first rod 31 and the third connecting rod 73 and the nut is tightened on the thread.

[0038] Reference Figure 3 and Figure 4 The second rod 32 includes a hinge rod 321 and a connecting rod 322. Both the hinge rod 321 and the connecting rod 322 are in the shape of a hollow square tube. There are two connecting rods 322. The two connecting rods 322 are parallel to each other and fixed at one end and separated from each other at the other end. The connecting rods 322 are in the shape of a hollow square tube. Figure 1 The hinged rods 321 also have two hinged rods 321, which correspond to the two connecting rods 322 one by one. One end of the two hinged rods 321 slides in the corresponding connecting rods 322 along the straight direction of the connecting rods 322, and one end of the two hinged rods 321 away from the connecting rods 322 is hinged to one end of the first rod 31 away from the bracket 7 and one end of the third rod 33 away from the camera 2 through pins.

[0039] Reference Figure 3 and Figure 5A limit rod 14 is provided between the first rod 31 and the connected hinge rod 321, and between the third rod 33 and the connected hinge rod 321. Taking the connection between the first rod 31 and the hinge rod 321 as an example, one end of the limit rod 14 is hinged to the hinge rod 321 through a pin, and the other end of the limit rod 14 has a limit protrusion extending into the first rod 31. The first rod 31 is provided with a waist-shaped hole 15 along its length direction for the limit protrusion to slide. When the hinge rod 321 rotates relative to the first rod 31, the limit protrusion slides in the waist-shaped hole 15. When the angle between the hinge rod 321 and the first rod 31 is a right angle, the limit protrusion moves to one end of the waist-shaped hole 15 close to the hinge rod 321 to limit the hinge rod 321 from continuing to rotate to expand the angle between the hinge rod 321 and the first rod 31, thereby limiting the adjustment angle between the hinge rod 321 and the first rod 31.

[0040] Reference Figure 1 and Figure 4 In addition, the two connecting rods 322 are provided with a plurality of holes for the bolts to pass through at evenly spaced intervals along the vertical direction, and the end of the hinge rod 321 close to the connecting rod 322 is also provided with a hole for the bolts to pass through. When the hinge rod 321 moves relative to the connecting rod 322, its own holes can be aligned with different holes on the connecting rod 322, and then bolts are passed through the hinge rod 321 and the connecting rod 322 at the same time and locked with nuts, so that the relative position between the hinge rod 321 and the connecting rod 322 can be adjusted, and then the distance between the first rod 31 and the third rod 33 can be adjusted, so that the photo-taking auxiliary device can adapt to structures with different extension heights.

[0041] Reference Figure 5 and Figure 6 The third rod 33 adopts a multi-section telescopic structure, including a plurality of adjustment rods 331 in the shape of a square tube with a hollow interior, each section adopts a sliding sleeve arrangement, and between two adjacent adjustment rods 331, an adjustment rod 331 close to the hinge rod 321 is slidably sleeved with an adjustment rod 331 away from the hinge rod 321. A first elastic member 5 is installed between any two adjacent adjustment rods 331, and the first elastic member 5 is a spring. In the two adjacent adjustment rods 331, the first elastic member 5 is installed in the adjustment rod 331 close to the hinge rod 321, and one end of the first elastic member 5 is connected to the inner wall of one end of the adjustment rod 331 close to the hinge rod 321, and the other end of the first elastic member 5 is connected to the other adjustment rod 331, so as to give the adjustment rod 331 away from the hinge rod 321 an elastic force to move in a direction away from the hinge rod 321, so that the third rod 33 is in an extended state. In this embodiment, the adjustment rod 331 has three sections.

[0042] Reference Figure 5 and Figure 7In this embodiment, a positioning protrusion 16 is fixed on the outer wall of the end of the adjusting rod 331 away from the hinge rod 321, and a positioning groove (not shown in the figure) is recessed outward on the inner wall of the end of the adjusting rod 331 close to the hinge, and the adjusting rod 331 has a certain deformation ability. Among the two adjacent hinge rods 321, the adjusting rod 331 away from the hinge rod 321 is moved toward the hinge rod 321, and the positioning protrusion 16 is pressed into the positioning groove of the adjacent adjusting rod 331, so that the two adjacent adjusting rods 331 are relatively positioned, and the third rod 33 is in a retracted state. In other embodiments, a spring latch structure can also be used to position the retracted adjacent adjusting rods 331.

[0043] Reference Figure 2 and Figure 7 In addition, there is an adjustment member 6 between the first rod 31 and the third rod 33. The adjustment member 6 is used to drive the third rod 33 to contract, and the inspector can adjust the length of the third rod 33 in real time through the adjustment member 6 after wearing the backpack 1. Specifically, the adjustment member 6 includes an adjuster 61 and a pull rope 62. The adjuster 61 can be a manual pull rope 62 adjuster 61, or an electric adjuster 61. In this embodiment, the manual pull rope 62 adjuster 61 is preferred. The adjuster 61 is rotatably connected to the upper surface of the first rod 31 near the back frame 101, and the rotation axis of the adjuster 61 extends vertically. One end of the pull rope 62 is rolled up on the adjuster 61, and the other end of the pull rope 62 extends to the outer wall of the adjustment rod 331 farthest from the hinge rod 321. The first rod 31, the hinge rod 321 and the adjustment rod 331 are all provided with a limit seat 17 for the pull rope 62 to slide through, so as to guide the movement of the pull rope 62.

[0044] During the inspection, the inspector rotates the handle on the adjuster 61 to reel in or unreel the pull rope 62. When the pull rope 62 is reeled in, it drives the adjusting rods 331 to move toward each other to achieve the contraction of the third rod 33. Therefore, the inspector can move the camera 2 to shoot different positions of the bottom of the structure by adjusting the position of the third rod 33 at the original position.

[0045] Reference Figure 7 Furthermore, the camera 2 supports the self-rotation function and can rotate freely 360 degrees. The adjustment rod 331 is connected to the base of the camera 2 through a U-shaped frame, and the rotation axis of the camera 2 is parallel to the length extension direction of the adjustment rod 331. The camera 2 adopts wireless transmission technology such as WiFi or Bluetooth, and the camera 2 can be controlled by a mobile phone to shoot and rotate.

[0046] The implementation principle of the photographing auxiliary device for bottom inspection of the structure in the embodiment of the present application is as follows: first, the backpack 1 and the connecting arm 3 are assembled through the bracket 7, and the connecting arm 3 is in an unfolded state, and then the third rod 33 is moved to the bottom of the structure. Then the inspector puts on the backpack 1, and moves on the top of the structure to drive the camera 2 to move and shoot the situation at the bottom of the structure. The inspector controls the rotation of the camera 2 through the mobile phone, and adjusts the length of the third rod 33 by rotating the regulator 61 to flexibly control the shooting range.

[0047] Embodiment 2: The difference between the embodiment of the present application and the first embodiment is that the bracket 7 in the embodiment of the present application can be adjusted in position along the height direction of the vertical rod 1011.

[0048] Reference Figure 8 and Fig. 9 A moving part 8 is fixed on the side of the first connecting rod 71 close to the vertical rod 1011, and the side of the moving part 8 away from the first connecting rod 71 is in a dovetail shape with a width gradually increasing away from the first connecting rod 71. A moving groove 18 is opened on the side of the vertical rod 1011 for the moving part 8 to enter and slide up and down.

[0049] A second elastic member 10 is installed in the movable groove 18 of the vertical rod 1011. The second elastic member 10 is a spring whose axis extends along the height direction of the vertical rod 1011. One end of the second elastic member 10 is connected to the inner top wall of the movable groove 18, and the other end of the second elastic member 10 is connected to the upper surface of the movable part 8. The second elastic member 10 gives the movable part 8 an elastic force to move downward, so that the movable part 8 is in contact with the inner bottom wall of the movable groove 18 under the condition of no other external force and is simultaneously subjected to the gravity of the connecting arm 3, the gravity of the bracket 7 and the elastic force of the second elastic member 10.

[0050] Reference Fig. 9 and Fig.10 In order to drive the bracket 7 to adjust its position along the height direction of the vertical rod 1011, a positioning mechanism 9 is provided between the vertical rod 1011 where the bracket 7 is not installed and the moving part 8. Specifically, the positioning mechanism 9 includes a positioning seat 91, a winding wheel 92, a traction rope 93 and an operating shaft 94.

[0051] Among them, the adjusting seat 91 is fixed on the outer wall of the vertical rod 1011 which is not connected to the bracket 7. The adjusting seat 91 is in the shape of a square rod, and the length extension direction of the adjusting seat 91 is parallel to the length extension direction of the second connecting rod 72. The end of the adjusting seat away from the vertical rod 1011 extends toward the front of the shoulder strap 102.

[0052] The reel 92 is rotatably connected to the position adjustment seat 91, and the rotation axis of the reel 92 is parallel to the length direction of the position adjustment seat 91, and the reel 92 is located at one end of the position adjustment seat 91 close to the vertical rod 1011. One end of the traction rope 93 is reeled on the reel 92, and the other end of the traction rope 93 extends in sequence through the vertical rod 1011 close to the position adjustment seat 91, the oblique rod 1012, and the vertical rod 1011 away from the position adjustment seat 91, and then extends to the moving groove 18, passes through the second elastic member 10, and is fixed to the upper surface of the moving part 8.

[0053] The operating shaft 94 is in the shape of a circular shaft, and the operating shaft 94 slides in the position adjustment seat 91, and the axial direction of the operating shaft 94 is parallel to the length extension direction of the position adjustment seat 91. The operating shaft 94 includes a matching section 941 and a connecting section 942 in sequence along its own axial direction. The matching section 941 is inserted into the winding wheel 92, and a convex strip 19 is fixed on the outer wall of the matching section 941 along its own axial direction, and a concave groove for the convex strip 19 to press against and slide along the axial direction of the matching section 941 is provided on the inner wall of the winding wheel 92. The connecting section 942 is located outside the winding wheel 92 and is threadedly connected to the position adjustment seat 91, and the end of the spiral selection away from the matching section 941 extends in a direction away from the vertical rod 1011 to the end of the position adjustment seat 91 away from the vertical rod 1011.

[0054] Reference Figure 8 and Fig.10 After the inspector puts the back frame 101 on his back, he controls the regulator 61 with his right hand and the operating shaft 94 with his left hand, and the position adjustment seat 91 gives gravity to the left side of the back frame 101 to balance the left and right sides of the back frame 101. When the operating shaft 94 rotates and moves in a direction close to the vertical rod 1011, it drives the reel 92 to rotate together. At this time, the reel 92 reels the traction rope 93, so that the traction rope 93 pulls the moving part 8 upward to drive the connecting arm 3 to move downward. On the contrary, when the operating shaft 94 moves in a direction away from the vertical rod 1011, the reel 92 unwinds, and the moving part 8 is pushed downward by the second elastic member 10.

[0055] Reference Fig.10 and Fig.11 Furthermore, the positioning mechanism 9 further includes a sliding seat 95, a gripping rod 96 and a third elastic member 97. The sliding seat 95 is disc-shaped and slides axially along the operating shaft 94 in the connecting section 942, and the sliding seat 95 can rotate along the axis of the connecting section 942 in the connecting section 942.

[0056] The gripping rod 96 is in the shape of a round rod, and one end of the gripping rod 96 is fixed to the outer wall of the sliding seat 95, and the end of the gripping rod 96 away from the sliding seat 95 extends radially along the connecting section 942 to the outside of the connecting section 942. The connecting section 942 has a first slide groove 11 and a second slide groove 12 on its outer wall that are connected to the inner cavity of the sliding seat 95 for sliding. The first slide groove 11 extends in a direction parallel to the axial direction of the bolt section, and the second slide groove 12 is provided at one end of the first slide groove 11 away from the matching section 941 and close to one end of the connecting section 942 away from the matching section 941, and the second slide groove 12 extends from opposite sides of the first slide groove 11 along the circumferential direction of the connecting section 942. When the gripping rod 96 moves in the first slide groove 11 and the second slide groove 12, it drives the sliding seat 95 to move in the connecting section 942.

[0057] The third elastic member 97 is a spring, and the third elastic member 97 is installed in the connecting section 942. The two ends of the third elastic member 97 that are far away from each other are respectively connected to the inner cavity wall of the connecting section 942 and the sliding seat 95, so that the third elastic member 97 gives the handle 96 an elastic force to move toward the mating section 941.

[0058] A plurality of anti-rotation grooves 13 are evenly spaced along the circumference of the operating shaft 94 on the end wall of the adjustment seat 91 away from the vertical rod 1011, and the anti-rotation grooves 13 are used for the gripping rod 96 to abut against. When the gripping rod 96 slides into the first sliding groove 11, the gripping rod 96 can be pulled by the third elastic member 97 to move toward the vertical rod 1011 and abut against one of the anti-rotation grooves 13, so as to improve the stability of the gripping rod 96 and limit the rotation of the operating shaft 94.

[0059] When the traction rope 93 needs to be retracted and unreeled, the gripping rod 96 is moved into the second sliding groove 12 to limit the gripping rod 96 from sliding axially along the connecting section 942 . At this time, the operating shaft 94 can be driven to rotate by pushing the gripping rod 96 to rotate.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A photographing auxiliary device for bottom inspection of a structure, characterized in that: include: A backpack (1), a camera (2) and a connecting arm (3); the connecting arm (3) is bent when in use, and two ends of the connecting arm (3) that are away from each other are respectively connected to the backpack (1) and the camera (2), and a clearance cavity (4) for an inspection structure to enter is formed between the two ends of the connecting arm (3) that are away from each other.

2. The photographing auxiliary device for bottom inspection of a structure according to claim 1, characterized in that: The camera (2) is capable of self-rotation.

3. The photographing auxiliary device for bottom inspection of a structure according to claim 1, characterized in that: The connecting arm (3) comprises a first rod (31), a second rod (32) and a third rod (33) which are connected in sequence; an end of the first rod (31) away from the second rod (32) is connected to the backpack (1), and an end of the third rod (33) away from the second rod (32) is connected to the camera (2); the first rod (31) and the second rod (32) as well as the second rod (32) and the third rod (33) are hingedly arranged so that the connecting arm (3) can be deformed to a folded storage state and an unfolded use state; When the connecting arm (3) is in a folded and stored state, the first rod (31), the second rod (32) and the third rod (33) are folded together; when the connecting arm (3) is in an unfolded and used state, the second rod (32) is bent relative to the first rod (31) and the third rod (33).

4. The photographing auxiliary device for bottom inspection of a structure according to claim 3, characterized in that: The extension length of the second rod (32) can be adjusted.

5. The photographing auxiliary device for bottom inspection of a structure according to claim 3, characterized in that: The third rod (33) comprises a plurality of adjusting rods (331) which are slidably sleeved in sequence, a first elastic member (5) is provided between two adjacent adjusting rods (331), the first elastic member (5) providing an elastic force for the adjusting rod (331) at one end away from the second rod (32) to move in a direction away from the second rod (32), and an adjusting member (6) is provided between the first rod (31) and the third rod (33), the adjusting member (6) being used to adjust the relative positions of the adjusting rods (331).

6. The photographing auxiliary device for bottom inspection of a structure according to claim 5, characterized in that: The adjusting member (6) comprises an adjuster (61) and a pull rope (62), wherein the adjuster (61) is rotatably connected to the first rod (31), one end of the pull rope (62) is rolled up on the adjuster (61), and one end of the pull rope (62) away from the adjuster (61) is connected to the adjusting rod (331) farthest from the second rod (32) among all the adjusting rods (331).

7. The photographing auxiliary device for bottom inspection of a structure according to claim 3, characterized in that: The backpack (1) comprises a back frame (101) and shoulder straps (102), wherein the back frame (101) has two shoulder straps (102), and the two shoulder straps (102) are respectively connected to two opposite sides of the backpack (1); a bracket (7) is connected between the back frame (101) and the first rod (31), and the first rod (31) and the bracket (7) are detachably connected.

8. The photographing auxiliary device for bottom inspection of a structure according to claim 7, characterized in that: The bracket (7) has a movable portion (8) extending into the back frame (101), the movable portion (8) moves in the back frame (101) along the height direction of the back frame (101), the back frame (101) has a positioning mechanism (9) for adjusting the position of the movable portion (8) in the height direction of the back frame (101), and the back frame (101) has a second elastic member (10) for giving the movable portion (8) an elastic force to move downward.

9. The photographing auxiliary device for bottom inspection of a structure according to claim 8, characterized in that: The positioning mechanism (9) comprises A position adjustment seat (91) mounted on a side of the back frame (101) away from the bracket (7); A winding wheel (92) rotatably connected to the back frame (101); A traction rope (93), one end of which is connected to the moving part (8) and the other end of which is wound on the winding wheel (92); as well as An operating shaft (94) has one end threadedly connected to the position adjustment seat (91) and extending out of the position adjustment seat (91), and an opposite other end slidingly movable in the winding wheel (92) along the axial direction of the winding wheel (92).

10. The photographing auxiliary device for bottom inspection of a structure according to claim 9, characterized in that: The positioning mechanism (9) also includes A sliding seat (95) is axially slidable in the operating shaft (94) along the operating shaft (94) and is capable of coaxially rotating in the operating shaft (94); a gripping rod (96) connected to the sliding seat (95), extending radially along the operating shaft (94) to the outside of the operating shaft (94), and opposite to the end of the adjusting seat (91); and A third elastic member (97) is installed in the operating shaft (94) and connected to the sliding seat (95), and provides an elastic force for the sliding seat (95) to move in a direction close to the position adjustment seat (91); The operating shaft (94) is provided with a first sliding groove (11) along its own axial direction for the gripping rod (96) to slide, and the operating shaft (94) is provided with a second sliding groove (12) at one end of the first sliding groove (11) away from the back frame (101) for the gripping rod (96) to slide, and the second sliding groove (12) extends circumferentially along the operating shaft (94); and the end of the adjusting seat (91) away from the back frame (101) is provided with a plurality of anti-rotation grooves (13) along the circumference of the operating shaft (94) for the gripping rod (96) to abut against.

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