Endoscope snake structure with adjustable pitch function

Abstract

The application belongs to the technical field of endoscope snake bone, and provides an endoscope snake bone structure with adjustable spacing function, which comprises an endoscope snake bone composed of multiple snake bone rings and a connecting mechanism; two adjacent snake bone rings are rotationally connected through a rotating shaft; a movable groove is formed on the surface of the snake bone ring; a fixed arc plate is fixedly connected to the middle part of the front side and the rear side of the inner wall of the snake bone ring; and the other end of the fixed arc plate is rotationally connected with a rotating arc plate. The endoscope snake bone structure with adjustable spacing function is characterized in that: by pulling one end of the steel wire rope, the steel wire rope is tightened through the connection of the steel wire rope; after the one end of the steel wire rope is loosened, the steel wire rope is retracted and moved; the tension of the steel wire rope is adjusted; the spacing between the multiple snake bone rings is adjusted; the multiple snake bone rings are moved in a turning direction; and the movable groove is formed, so that the use range of the endoscope of the snake bone structure is expanded, and the endoscope is convenient for use in the detection of cracks of a steam turbine.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of endoscope snake bone, and particularly relates to an endoscope snake bone structure with adjustable spacing function. BACKGROUND

[0002] Steam turbine parts are numerous, most of which are in a harsh environment of high temperature and high pressure, and the performance of the material itself is required to be high, and the surface defects of the material are also required to be strictly controlled. After the surface defects of the workpiece are subjected to tensile, shear, bending and fatigue stress, etc., they may become cracks, and even crack initiation points. Therefore, such defects should be found as soon as possible and eliminated in time.

[0003] Because the naked eye cannot directly detect the surface of hidden parts such as the interior of the steam turbine, pipes and assembly, an industrial endoscope with the characteristics of small volume, easy to carry, long observation distance, small diameter and direct observation plays an important role in the detection of steam turbines. The endoscope can detect cracks, peeling, pull lines, scratches, dents, bumps, spots, corrosion, incomplete welding, welding leakage, excess material, assembly defects and the like of the steam turbine.

[0004] The snake bone is a component structure of the endoscope, and the active space of the snake bone structure of the endoscope is limited, which leads to certain limitations in the use of the endoscope, and is not conducive to the detection of cracks in the steam turbine. For this reason, an endoscope snake bone structure with adjustable spacing is proposed. SUMMARY

[0005] The present application provides an endoscope snake bone structure with adjustable spacing function, which aims to solve the problem that the active space of the snake bone structure of the endoscope is limited, which leads to certain limitations in the use of the endoscope, and is not conducive to the detection of cracks in the steam turbine.

[0006] The present application is implemented as follows: an endoscope snake bone structure with adjustable spacing function, comprising an endoscope snake bone composed of a plurality of snake bone rings and a connecting mechanism.

[0007] The two adjacent snake bone rings are rotatably connected through a rotating shaft, and the surface of the snake bone ring is provided with a movable groove;

[0008] The front side and the rear side of the middle part of the inner wall of the snake bone ring are fixedly connected with fixed arc plates, the other end of the fixed arc plate is rotatably connected with a rotating arc plate, the other end of the rotating arc plate abuts against the inner wall of the snake bone ring, and when the other end of the rotating arc plate abuts against the inner wall surface of the snake bone ring, an integral rope passing ear is formed by the fixed arc plate and the inner wall surface of the snake bone ring.

[0009] The lower part of the front side and the rear side of the inner wall of the snake bone ring is fixedly connected with a containing box, the inner cavity of the containing box is slidably provided with a moving plate, the bottom of the moving plate and the bottom of the inner wall of the containing box are fixedly connected with a spring, the top of the moving plate is fixedly connected with a clamping plate, the other end of the clamping plate is pullably extended to the outside of the containing box, the surface of the rotating arc plate is provided with a bayonet that is matched with the clamping plate, and the clamping plate is clamped in the bayonet when the other end of the rotating arc plate abuts against the inner wall surface of the snake bone ring.

[0010] The inner side of the moving plate is movably extended to the outside of the containing box, and the inner side of the moving plate is fixedly connected with a fixed plate.

[0011] The connecting mechanism comprises two steel wires, the front side and the rear side of the endoscope snake bone cavity are provided with the two steel wires respectively, one end of the steel wire is pullably extended to the outside of the endoscope snake bone, and the other end of the steel wire is sequentially fixedly connected with the rope penetrating ear inside the same side of the snake bone ring and the rope penetrating ear inside the same side of the last snake bone ring cavity along one end to the other end of the endoscope snake bone.

[0012] Preferably, the middle part of the front side and the rear side of the inner wall of the snake bone ring is fixedly connected with a support frame rod inside the rope penetrating ear, and a rotating drum is rotatably sleeved on the support frame rod.

[0013] Preferably, the inner side of the containing box is provided with a movable port for the movement of the moving plate, and the inner side of the moving plate extends to the outside of the containing box through the inside of the movable port.

[0014] Preferably, the inner wall surface of the containing box is provided with a sliding groove for the sliding of the moving plate.

[0015] Preferably, one end of the steel wire is fixedly connected with a connecting box, the inner cavity of the connecting box is rotatably provided with a cross rod, one end of the cross rod extends to the outside of the connecting box, the surface of the cross rod is fixedly sleeved with a rope winding roller, the surface of the rope winding roller is wound with a connecting rope having one end fixedly connected with the surface of the rope winding roller, and the other end of the connecting rope is pullably extended to the outside of the connecting box.

[0016] Preferably, the other end of the connecting rope is fixedly connected with a hanging ring, and one end of the cross rod is fixedly connected with a rotating handle.

[0017] Preferably, the other end of the connecting box is rotatably extended to the outside of the connecting box, the other end of the cross rod is fixedly connected with a fixed disc, the fixed disc is provided with a bolt, and the side of the connecting box close to the fixed disc is provided with a plurality of clamping grooves matched with the bolt.

[0018] Preferably, the plurality of said card slots are evenly spaced and arranged in a ring around the shaft of said crossbar.

[0019] Advantages

[0020] Compared with the prior art, the endoscope snake bone structure with adjustable spacing function has the following beneficial effects: by pulling one end of the steel wire rope, the steel wire rope is tightened through the connection of the steel wire rope, after loosening one end of the steel wire rope, the steel wire rope moves back, the tension of the steel wire rope is adjusted, the spacing between the plurality of snake bone rings is adjusted, the plurality of snake bone rings are moved in the direction, the use range of the endoscope of the snake bone structure is expanded through the movable groove, the detection work of the steam turbine crack is facilitated, and when the steel wire rope is perforated, the movable plate is pulled to drive the clamping plate to retract, the clamping plate is pulled out from the inside of the card hole, the rotating arc plate is opened, the threading space is increased, the steel wire rope is conveniently threaded, the assembly operation of the snake bone is facilitated, and the connecting rope is conveniently adjusted in length. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a top view of the structure of the application;

[0022] Figure 2 It is a structure diagram of the fixed arc plate and the rotating arc plate in the application;

[0023] Figure 3 It is a structure diagram of the application; Figure 1 It is a local enlarged view of A in the application;

[0024] Figure 4 It is a local enlarged view of B in the application; Figure 2

[0025] Figure 5 It is a structure diagram of the connecting box and the crossbar in the application.

[0026] In the figure: 1, steel wire rope; 2, rotating shaft; 3, movable groove; 4, snake bone ring; 5, hanging ring; 6, card slot; 7, fixed arc plate; 8, rotating arc plate; 9, support frame rod; 10, rotating drum; 11, containing box; 12, movable plate; 13, spring; 14, movable port; 15, clamping plate; 16, card port; 17, fixed plate; 18, sliding slot; 19, connecting rope; 20, connecting box; 21, crossbar; 22, rope winding roller; 23, handle; 24, fixed disc; 25, bolt. DETAILED DESCRIPTION

[0027] ​In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0028] Please refer to Figures 1-3 The present application provides a technical scheme: an endoscope snake bone structure with adjustable spacing function, comprising an endoscope snake bone composed of a plurality of snake bone rings 4 and a connecting mechanism; two adjacent snake bone rings 4 are rotationally connected through a rotating shaft 2, and the surface of the snake bone ring 4 is provided with a movable groove 3; the middle part of the front side and the rear side of the inner wall of the snake bone ring 4 is fixedly connected with a fixed arc plate 7.

[0029] The other end of the fixed arc plate 7 is rotationally connected with a rotating arc plate 8, and the other end of the rotating arc plate 8 abuts against the inner wall of the snake bone ring 4. When the other end of the rotating arc plate 8 abuts against the inner wall surface of the snake bone ring 4, it forms a complete rope passing ear with the fixed arc plate 7 and the inner wall surface of the snake bone ring 4.

[0030] The lower part of the front side and the rear side of the inner wall of the snake bone ring 4 is fixedly connected with a containing box 11, and the inner cavity of the containing box 11 is slidably provided with a moving plate 12. The bottom of the moving plate 12 and the bottom of the inner wall of the containing box 11 are fixedly connected with a spring 13.

[0031] The top of the moving plate 12 is fixedly connected with a clamping plate 15, and the other end of the clamping plate 15 extends to the outside of the containing box 11. The surface of the rotating arc plate 8 is provided with a bayonet 16 matched with the clamping plate 15. When the other end of the rotating arc plate 8 abuts against the inner wall surface of the snake bone ring 4, the clamping plate 15 is clamped in the inside of the bayonet 16.

[0032] During the movement of the moving plate 12, the spring 13 is deformed to generate a spring force, and the spring force pushes the clamping plate 15 to move to the outside of the containing box 11 through the connection of the moving plate 12.

[0033] After the other end of the rotating arc plate 8 abuts against the inner wall surface of the snake bone ring 4, a complete rope passing ear is formed. After the clamping plate 15 is inserted into the inside of the bayonet 16, the rope passing ear can be fixed, so that the rope passing ear is more stable after the rope is passed.

[0034] After the clamping plate 15 is pulled out of the inside of the bayonet 16, the rotating arc plate 8 can be rotated to open, increasing the rope passing space of the rope passing ear.

[0035] The inner side surface of the moving plate 12 movably extends to the outside of the containing box 11, and the inner side surface of the moving plate 12 is fixedly connected with a fixed plate 17.

[0036] During the movement of the fixed plate 17, the moving plate 12 can be moved together.

[0037] The connecting mechanism comprises two steel wires 1, which are respectively arranged on the front side and the rear side of the endoscope snake bone inner cavity. One end of the steel wire 1 is pullably extended to the outside of the endoscope snake bone. The other end of the steel wire 1 is fixedly connected in sequence along one end to the other end of the endoscope snake bone through the same side of the inner hole of the plurality of snake bone rings 4 and the inner hole of the same side of the inner cavity of the last snake bone ring 4.

[0038] Pulling one end of the steel wire 1, the steel wire 1 is connected and tightened. After loosening one end of the steel wire 1, the steel wire 1 is retracted and moved. The tension of the steel wire 1 is adjusted to adjust the distance between the plurality of snake bone rings 4, move the plurality of snake bone rings 4, and expand the use range of the endoscope of the snake bone structure through the opening of the movable groove 3, which is beneficial to the detection of the steam turbine crack.

[0039] When the steel wire 1 is perforated, the moving plate 12 can be pulled to retract the clamping plate 15. After the clamping plate 15 is pulled out of the inner hole of the clamping hole 16, the rotating arc plate 8 can be opened to increase the threading space, so that the steel wire 1 can be easily threaded and the snake bone assembly operation is facilitated.

[0040] Further, the support frame rod 9 located in the inner hole of the rope ear is fixedly connected to the middle part of the front side and the rear side of the inner wall of the snake bone ring 4. The rotating drum 10 is rotatably sleeved on the support frame rod 9.

[0041] In this embodiment, when one end of the steel wire 1 is pulled, the steel wire 1 is in contact with the surface of the rotating drum 10. When the rotating drum 10 rotates, the friction of the steel wire 1 is reduced, and the plurality of snake bone rings 4 move more smoothly.

[0042] Further, the inner side of the containing box 11 is provided with a movable opening 14 for the movement of the moving plate 12. The inner side of the moving plate 12 extends to the outside of the containing box 11 through the inner hole of the movable opening 14.

[0043] Further, the inner wall surface of the containing box 11 is provided with a sliding groove 18 for the sliding of the moving plate 12.

[0044] Further, one end of the steel wire 1 is fixedly connected with a connecting box 20. The inner cavity of the connecting box 20 is rotatably provided with a horizontal rod 21. One end of the horizontal rod 21 extends to the outside of the connecting box 20. The surface of the horizontal rod 21 is fixedly sleeved with a rope winding roller 22. The surface of the rope winding roller 22 is wound with a connecting rope 19 having one end fixedly connected with the surface of the rope winding roller 22. The other end of the connecting rope 19 is pullably extended to the outside of the connecting box 20.

[0045] In this embodiment, rotating the handle 23 can drive the rope winding roller 22 to move, wind or release the connecting rope 19, adjust the length of the connecting rope 19, and facilitate the connection and use of different working equipment.

[0046] Further, the other end of the connecting rope 19 is fixedly connected with the hanging ring 5, and one end of the crossbar 21 is fixedly connected with the handle 23.

[0047] In the embodiment, the hanging ring 5 facilitates the other end of the connecting rope 19 to be connected with an external device for use, and the handle 23 is rotated to drive the winding rope roller 22 to rotate through the connection of the crossbar 21.

[0048] Further, the other end of the connecting box 20 is rotatably extended to the outside of the connecting box 20, the other end of the crossbar 21 is fixedly connected with the fixed disc 24, the fixed disc 24 is provided with the bolt 25, and the side of the connecting box 20 close to the fixed disc 24 is provided with a plurality of clamping grooves 6 matched with the bolt 25.

[0049] In the embodiment, after the handle 23 is inserted into the inside of the clamping groove 6, the fixed disc 24 is fixed, and the winding rope roller 22 is fixed through the connection of the crossbar 21.

[0050] Further, the plurality of clamping grooves 6 are evenly and circularly arranged around the axis of the crossbar 21.

[0051] In the embodiment, the plurality of clamping grooves 6 are evenly distributed, so that after the fixed disc 24 drives the bolt 25 to rotate, the bolt 25 still corresponds to the position of one clamping groove 6.

[0052] The working principle and use process of the present application are as follows: after the present application is installed, one end of the steel wire rope 1 is pulled, the steel wire rope 1 is tightened through the connection of the steel wire rope 1, after one end of the steel wire rope 1 is loosened, the steel wire rope 1 is retracted and moved, the tension of the steel wire rope 1 is adjusted, the distance between the plurality of snake bone rings 4 is adjusted, the plurality of snake bone rings 4 are moved in the direction, and the use range of the endoscope with the snake bone structure is expanded through the opening of the movable groove 3, which is beneficial to the detection of the steam turbine crack, and when the steel wire rope 1 is perforated, the moving plate 12 drives the clamping plate 15 to retract, the clamping plate 15 is pulled out from the inside of the clamping port 16, the arc plate 8 is opened, the threading space is increased, the steel wire rope 1 is conveniently threaded, and the assembly operation of the snake bone is facilitated.

[0053] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An endoscope snake structure with adjustable pitch function, characterized in that: The endoscope snake bone and connecting mechanism comprise a plurality of snake bone rings (4); Two adjacent snake bone rings (4) are rotationally connected through a rotating shaft (2), and the surface of the snake bone ring (4) is provided with a movable groove (3); The front side and the rear side of the middle part of the inner wall of the snake bone ring (4) are fixedly connected with fixed arc plates (7), the other end of the fixed arc plate (7) is rotationally connected with a rotating arc plate (8), the other end of the rotating arc plate (8) abuts against the inner wall of the snake bone ring (4), and the other end of the rotating arc plate (8) abutting against the inner wall of the snake bone ring (4) forms a complete rope passing ear with the fixed arc plate (7) and the inner wall of the snake bone ring (4); The lower part of the front side and the rear side of the inner wall of the snake bone ring (4) are fixedly connected with containing boxes (11), the inner cavity of the containing box (11) is slidably provided with a moving plate (12), the bottom of the moving plate (12) and the bottom of the inner wall of the containing box (11) are fixedly connected with a spring (13), the top of the moving plate (12) is fixedly connected with a clamping plate (15), the other end of the clamping plate (15) can be pulled out of the containing box (11), the surface of the rotating arc plate (8) is provided with a clamping hole (16) matched with the clamping plate (15), and the clamping plate (15) is clamped in the clamping hole (16) when the other end of the rotating arc plate (8) abuts against the inner wall of the snake bone ring (4); The inner side of the moving plate (12) can be movably extended to the outside of the containing box (11), and the inner side of the moving plate (12) is fixedly connected with a fixed plate (17); The connecting mechanism comprises two steel wire ropes (1), the two steel wire ropes (1) are arranged on the front side and the rear side of the inner cavity of the endoscope snake bone, one end of the steel wire rope (1) can be pulled out of the endoscope snake bone, the other end of the steel wire rope (1) is fixedly connected with the inside of the rope passing ear on the same side of the inner cavity of the last snake bone ring (4) in sequence along one end to the other end of the endoscope snake bone. One end of the steel wire rope (1) is fixedly connected with a connecting box (20), a horizontal rod (21) is rotatably arranged in the inner cavity of the connecting box (20), one end of the horizontal rod (21) extends to the outside of the connecting box (20), a rope winding roller (22) is fixedly sleeved on the surface of the horizontal rod (21), the surface of the rope winding roller (22) is wound with a connecting rope (19) having one end fixedly connected with the surface of the rope winding roller (22), the other end of the connecting rope (19) is pullably extended to the outside of the connecting box (20), the other end of the connecting rope (19) is fixedly connected with a hanging ring (5), one end of the horizontal rod (21) is fixedly connected with a rotating handle (23), the other end of the connecting box (20) is rotatably extended to the outside of the connecting box (20), the other end of the horizontal rod (21) is fixedly connected with a fixing disc (24), the fixing disc (24) is provided with bolts (25), and the side of the connecting box (20) close to the fixing disc (24) is provided with a plurality of clamping grooves (6) matched with the bolts (25).

2. The snake structure of endoscope with adjustable pitch according to claim 1, characterized in that: The inner wall of the snake bone ring (4) is fixedly connected with a support frame rod (9) located in the rope passing ear.

3. The endoscope snake structure with adjustable pitch function according to claim 1, characterized in that: The inner side of the containing box (11) is provided with a movable opening (14) for the movement of the moving plate (12), and the inner side of the moving plate (12) extends to the outside of the containing box (11) through the inside of the movable opening (14).

4. The endoscope snake structure with adjustable pitch function according to claim 1, characterized in that: The inner wall of the containing box (11) is provided with a sliding groove (18) for the sliding of the moving plate (12).

5. The endoscope snake structure with adjustable pitch function according to claim 1, characterized in that: A plurality of clamping grooves (6) are evenly and circularly arranged around the axis of the horizontal rod (21).

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