Multifunctional maintenance trolley suitable for flow channel of hydropower station

Abstract

The invention relates to the technical field of hydropower stations, in particular to a multifunctional maintenance trolley suitable for a hydropower station runner. Comprising a trolley support installed on a hydropower station runner, a distance adjusting mechanism, a lifting adjusting mechanism, a maintenance detection mechanism and a sliding adjusting mechanism are installed on the trolley support, and the distance adjusting mechanism comprises a horizontal adjusting lead screw, a telescopic support and a horizontal locking switch; the lifting adjusting mechanism comprises a vertical adjusting lead screw, a vertical locking switch and a walking wheel. The maintenance detection mechanism comprises a mounting seat and a maintenance probe; the sliding adjusting mechanism comprises a sliding wheel, a telescopic rod, a reset spring and an inclined supporting frame. Through the spacing adjusting mechanism, the lifting adjusting mechanism, the overhauling detection mechanism and the sliding adjusting mechanism, the multifunctional overhauling device can accurately reach different overhauling positions, and the multifunctional overhauling requirement under the complex environment of a hydropower station runner is fully met.

Description

Technical Field

[0001] The present invention relates to the technical field of hydropower stations, and particularly relates to a multi-functional maintenance trolley applicable to the flow channels of hydropower stations. Background Art

[0002] During the operation stage of a hydropower station, the flow channel is a core component, and its condition is directly related to the stable operation of the power station. Therefore, regular maintenance work needs to be carried out. At present, most of the flow channels of hydropower stations are large U-shaped landslide structures with inclined surfaces, which pose great challenges to the maintenance work. In the traditional maintenance mode, maintenance personnel need to hang ropes to detect the side walls of the flow channel, with extremely low efficiency, and the personnel are suspended at high altitudes, increasing the safety risk sharply. To overcome this problem, technical personnel in the industry have actively tried. For example, the crawler-type bidirectional adjustable angle maintenance lifting platform for the flow channel of a hydropower station with the Chinese patent publication number CN117963802A provides an auxiliary maintenance idea and can assist in the maintenance of the flood discharge channel of a hydropower station. However, this solution still has deficiencies. Due to the inclined and complex structure of the side wall of the flow channel, it is still difficult for maintenance personnel to attach and operate in some areas, forming maintenance blind spots, resulting in the actual condition of the flow channel not being fully explored, and posing a hidden danger to the safe operation of the hydropower station. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art and provide a multi-functional maintenance trolley applicable to the flow channels of hydropower stations, so as to solve the problems of low efficiency, personnel danger and inability to attach and maintain some side walls in the existing maintenance methods of hydropower station flow channels, and meet the multi-functional maintenance requirements in the complex environment of hydropower station flow channels.

[0004] The technical solution adopted by the present invention is as follows: A multi-functional maintenance trolley applicable to the flow channels of hydropower stations includes a trolley support installed on the flow channel of a hydropower station. A spacing adjustment mechanism, a lifting adjustment mechanism, a maintenance detection mechanism and a sliding adjustment mechanism are installed on the trolley support, wherein: The spacing adjustment mechanism is located at the upper end of the trolley support and includes a horizontal adjustment lead screw, a telescopic support and a horizontal locking switch. The horizontal adjustment lead screw penetrates through the telescopic support and the trolley support, and the spacing between the telescopic support and the trolley support is adjusted through the horizontal adjustment lead screw. The horizontal locking switch is used to lock the relative position of the telescopic support and the trolley support; The lifting adjustment mechanism is located at the upper end of the trolley support and includes a vertical adjustment lead screw, a vertical locking switch and a walking wheel. The vertical adjustment lead screw penetrates through the trolley support and is connected to the walking wheel. The walking wheel drives the trolley support to walk along the bank of the flow channel of the hydropower station; the vertical locking switch is used to lock the relative position of the trolley support and the walking wheel; The maintenance detection mechanism is located inside the middle part of the trolley support. It includes a mounting seat and a maintenance probe. The mounting seats are arranged on the trolley support at intervals, and a maintenance probe is provided on the mounting seat. The maintenance probe is arranged towards the outer wall of the hydropower station runner and is used to detect the damage degree of the hydropower station runner. The sliding adjustment mechanism is located at the bottom end of the trolley support. It includes a sliding wheel, a telescopic rod, a return spring and a diagonal support frame. The sliding wheel abuts against the outer wall of the hydropower station runner. One end of the telescopic rod is equipped with a sliding wheel, and the other end of the telescopic rod is movably arranged inside the trolley support through the return spring. A diagonal support frame is also arranged on the outer side of the bottom of the trolley support.

[0005] This technical solution integrates a spacing adjustment mechanism, a lifting adjustment mechanism, an inspection and detection mechanism, and a sliding adjustment mechanism on the trolley support, enabling flexible adjustment of the spacing and height between the trolley and the flow channel. It can move along the bank of the flow channel, detect the damage degree of the outer wall of the flow channel, and ensure the smooth movement and structural stability of the trolley to meet the multi-functional maintenance requirements in the complex environment of the hydropower station flow channel. Specifically, the horizontal adjustment screw converts torque into linear motion through its rotational motion. When the horizontal adjustment screw is rotated, due to the threaded fit between the screw and the telescopic support and the trolley support, it will push the telescopic support to move horizontally relative to the trolley support, thereby realizing the adjustment of the spacing between the two; the horizontal locking switch fixes the relative position of the two through bolt fastening to prevent the spacing from changing due to external forces during maintenance; the rotational motion of the vertical adjustment screw drives the connected walking wheels to move vertically; since the walking wheels are connected to the trolley support, when the walking wheels move up and down, it will change the overall height of the trolley support, realizing the lifting adjustment of the trolley in the vertical direction; the design of the walking wheels enables the trolley to walk along the bank of the hydropower station flow channel, facilitating maintenance personnel to move the trolley to different maintenance positions; the horizontal locking switch prevents the trolley from accidentally moving during maintenance by locking the relative position of the trolley support and the walking wheels; the inspection probe uses ultrasonic detection to emit ultrasonic waves to the outer wall of the hydropower station flow channel. After the ultrasonic waves encounter the flow channel wall surface, they will be reflected. The probe receives the reflected waves and analyzes parameters such as the propagation time and frequency change to judge the thickness and internal defects of the flow channel wall surface, etc., realizing the detection of the damage degree of the flow channel; the mounting seats are arranged at intervals on the trolley support to expand the detection range of the inspection probe, enabling the trolley to fully cover the outer wall of the flow channel during movement; the inspection probe is arranged facing the outer wall of the flow channel to ensure that it can directly detect the flow channel wall surface; the sliding wheels are in contact with the outer wall of the hydropower station flow channel. When the trolley moves in the flow channel, the sliding wheels can roll along the flow channel wall surface, reducing the resistance of the trolley movement; the combination of the telescopic rod and the return spring enables the sliding wheels to have a certain adaptive ability; when there are unevenness or local deformations on the flow channel wall surface, the return spring will automatically adjust the length of the telescopic rod according to the changes in the wall surface, keeping the sliding wheels always in close contact with the wall surface; the diagonal brace is arranged on the outer side of the bottom of the trolley support, and its function is to increase the overall stability of the trolley; when the trolley moves or performs maintenance operations, the diagonal brace disperses the external forces received by the trolley, preventing the trolley from tipping over or shaking due to uneven force.

[0006] In addition, the multi-functional maintenance trolley for hydropower station flow channels proposed according to the present invention above further has the following additional technical features: According to one embodiment of the present invention, the trolley bracket is arranged in an L shape, including a horizontal section that cooperates with the bank of the hydropower station flow channel, a vertical section that has a certain gap with the outer wall of the hydropower station flow channel, and a bending section that interferes with the hydropower station flow channel; the spacing adjustment mechanism is located at the inner end of the horizontal section, the lifting and lowering adjustment mechanism is located on the upper surface of the horizontal section, the maintenance and detection mechanism is located in the gap of the vertical section, and the sliding adjustment mechanism is located at the lower end of the bending section.

[0007] This technical solution designs the trolley bracket into an L-shape and rationally arranges the positions of various mechanisms in the horizontal section, vertical section and bending section, so that each mechanism can play its own function in the overall structure of the trolley and achieve effective coordination with the flow channel of the hydropower station to complete the flow channel maintenance work.

[0008] According to one embodiment of the present invention, the telescopic bracket of the spacing adjustment mechanism remains stationary, and the trolley bracket is driven by the horizontal adjustment screw to adjust the front and rear position relative to the telescopic bracket, thereby indirectly adjusting the gap width between the trolley bracket and the flow channel of the hydropower station.

[0009] This technical solution keeps the telescopic bracket stationary in the spacing adjustment mechanism, uses the horizontal adjustment screw to drive the trolley bracket to move forward and backward relative to the telescopic bracket, and indirectly adjusts the gap width between the trolley bracket and the flow channel of the hydropower station to meet the requirements for the distance between the trolley and the flow channel in different maintenance scenarios.

[0010] According to an embodiment of the present invention, the running wheels of the lifting and lowering adjustment mechanism are divided into four groups, which are respectively connected to the corresponding vertical adjustment screws.

[0011] This technical solution achieves stability and flexibility in the lifting and lowering adjustment of the trolley bracket by dividing the traveling wheels of the lifting and adjusting mechanism into four groups and connecting them to the corresponding vertical adjustment screws respectively, thereby ensuring that the trolley can accurately reach different heights for maintenance.

[0012] According to one embodiment of the present invention, the vertical adjustment screw of the lifting adjustment mechanism adjusts the distance between the trolley bracket and the shore ground, thereby indirectly adjusting the height of the sliding adjustment mechanism against the side wall of the flow channel of the hydropower station.

[0013] This technical solution uses the vertical adjustment screw of the lifting adjustment mechanism to adjust the distance between the trolley bracket and the shore ground, and indirectly adjusts the height of the sliding adjustment mechanism against the side wall of the hydropower station flow channel, so that the trolley can adapt to the flow channel maintenance positions at different heights and ensure effective contact between the sliding wheel and the side wall of the flow channel.

[0014] According to one embodiment of the present invention, a track matching with the running wheels is provided on the bank of the flow channel of the hydropower station.

[0015] This technical solution provides a stable path for the trolley to travel through the track, ensuring that the trolley can move accurately and smoothly along the shore, thereby improving the safety and efficiency of maintenance operations.

[0016] According to one embodiment of the present invention, the trolley bracket is hoisted to a designated position of a flow channel of a hydropower station by a gantry crane or an overhead crane, and is installed on a track that has been fixed in advance.

[0017] This technical solution uses a gantry crane or an overhead crane to hoist the trolley bracket to the specified position of the flow channel of the hydropower station, thereby achieving rapid and accurate installation of the trolley in the flow channel and preparing for maintenance work.

[0018] According to one embodiment of the present invention, the maintenance detection mechanism has a built-in communication module, and the image of the outer wall of the flow channel of the hydropower station detected by the detection probe is transmitted to the server through the communication module.

[0019] This technical solution realizes remote transmission and storage of detection data by building a communication module into the maintenance detection mechanism, which facilitates subsequent analysis and processing and improves the information level of maintenance work.

[0020] According to an embodiment of the present invention, the sliding wheel performs a telescopic motion along the bending section, and the sliding wheel applies a pre-tightening force to the outer side wall of the flow channel of the hydropower station.

[0021] This technical solution ensures that the sliding wheel is always in close contact with the side wall of the flow channel by making the sliding wheel extend and retract along the bending section of the trolley bracket, thereby improving the stability and reliability of the trolley movement and ensuring smooth maintenance work.

[0022] Compared with the prior art, the present invention has the following beneficial effects: (1) The trolley bracket is designed in L shape, and the various mechanisms are reasonably arranged, which can flexibly adjust the distance and height from the flow channel to adapt to different maintenance scenarios. The ultrasonic inspection probe is equipped with a spacing mounting seat to comprehensively detect the damage of the outer wall of the flow channel, and the adjustment mechanism can accurately reach different maintenance positions, fully meeting the multi-functional maintenance needs in the complex environment of the hydropower station flow channel; (2) The four sets of running wheels cooperate with the tracks to ensure the stable and precise movement of the trolley. The gantry crane or overhead crane can be hoisted to achieve quick installation. The communication module can realize remote data transmission and storage for easy analysis. The sliding wheels can be adaptively adjusted and preloaded, and cooperate with the diagonal support frame to ensure the smooth movement of the trolley and the stable structure, thereby improving the safety and efficiency of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is one of the usage state diagrams of the present invention.

[0024] Figure 2 It is the second use state diagram of the present invention.

[0025] Figure 3 It is the structural diagram of the spacing adjustment mechanism and the lifting adjustment mechanism.

[0026] Figure 4 It is the structural diagram of the maintenance detection mechanism and the sliding adjustment mechanism.

[0027] In the figure: 1. Hydropower station flow channel; 2. Trolley support; 3. Spacing adjustment mechanism; 31. Horizontal adjustment screw; 32. Telescopic support; 33. Horizontal locking switch; 4. Lifting adjustment mechanism; 41. Vertical adjustment screw; 42. Vertical locking switch; 43. Traveling wheel; 5. Maintenance detection mechanism; 51. Mounting seat; 52. Maintenance probe; 6. Sliding adjustment mechanism; 61. Sliding wheel; 62. Telescopic rod; 63. Return spring; 64. Diagonal brace. Specific implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1 As Figures 1 to 4 shown, this embodiment provides a multifunctional maintenance trolley applicable to the hydropower station flow channel 1, including a trolley support 2 installed on the hydropower station flow channel 1, and a spacing adjustment mechanism 3, a lifting adjustment mechanism 4, a maintenance detection mechanism 5, and a sliding adjustment mechanism 6 are installed on the trolley support 2.

[0030] The spacing adjustment mechanism 3 is located at the upper end of the trolley support 2 and includes a horizontal adjustment screw 31, a telescopic support 32, and a horizontal locking switch 33. The horizontal adjustment screw 31 penetrates through the telescopic support 32 and the trolley support 2. By rotating the horizontal adjustment screw 31, using the thread fit between the screw and the telescopic support 32 and the trolley support 2, the telescopic support 32 is pushed to move horizontally relative to the trolley support 2 to achieve the adjustment of the distance between the two. After the adjustment is completed, the relative positions of the telescopic support 32 and the trolley support 2 are fixed by the horizontal locking switch 33 using bolts to prevent the distance from changing due to external forces during the maintenance process, thereby indirectly adjusting the clearance width between the trolley support 2 and the hydropower station flow channel 1 to meet the spacing requirements in different maintenance scenarios.

[0031] The lifting and adjusting mechanism 4 is located at the upper top of the trolley support 2 and includes a vertical adjusting screw 41, a vertical locking switch 42 and a traveling wheel 43. The vertical adjusting screw 41 penetrates through the trolley support 2 and is connected to the traveling wheel 43. By rotating the vertical adjusting screw 41, the connected traveling wheel 43 is driven to move in the vertical direction. Since the traveling wheel 43 is connected to the trolley support 2, the up and down movement of the traveling wheel 43 will change the overall height of the trolley support 2, realizing the lifting and adjusting of the trolley in the vertical direction. The design of the traveling wheel 43 enables the trolley to travel along the bank of the hydropower station runner 1, facilitating the maintenance personnel to move the trolley to different maintenance positions. After the trolley reaches the designated maintenance position, the relative position of the trolley support 2 and the traveling wheel 43 is locked through the vertical locking switch 42 to prevent the trolley from accidentally moving during the maintenance process.

[0032] The inspection and detection mechanism 5 is located inside the middle part of the trolley support 2 and includes a mounting seat 51 and an inspection probe 52. The mounting seats 51 are arranged at intervals on the trolley support 2, and the inspection probe 52 is arranged on the mounting seat 51. The inspection probe 52 is arranged facing the outer wall of the hydropower station runner 1. The inspection probe 52 uses ultrasonic detection technology to emit ultrasonic waves to the outer wall of the hydropower station runner 1. The ultrasonic waves will be reflected after encountering the runner wall surface. The probe receives the reflected wave and analyzes parameters such as its propagation time and frequency change, so as to judge the thickness of the runner wall surface, internal defects, etc., realizing the detection of the damage degree of the runner. The interval arrangement of the mounting seats 51 expands the detection range of the inspection probe 52, enabling the trolley to fully cover the outer wall of the runner during the movement process, ensuring that the outer wall of the runner can be directly detected.

[0033] The sliding adjusting mechanism 6 is located at the bottom end of the trolley support 2 and includes a sliding wheel 61, a telescopic rod 62, a return spring 63 and a diagonal brace 64. The sliding wheel 61 abuts against the outer wall of the hydropower station runner 1. One end of the telescopic rod 62 is equipped with the sliding wheel 61, and the other end of the telescopic rod 62 is movably arranged inside the trolley support 2 through the return spring 63. When the trolley moves in the runner, the sliding wheel 61 can roll along the runner wall surface, reducing the resistance of the trolley movement. The combination of the telescopic rod 62 and the return spring 63 enables the sliding wheel 61 to have a certain self-adaptive ability. When there are unevenness or local deformation on the runner wall surface, the return spring 63 will automatically adjust the length of the telescopic rod 62 according to the change of the wall surface, so that the sliding wheel 61 always maintains close contact with the wall surface. A diagonal brace 64 is also arranged on the outer side of the bottom of the trolley support 2, and its function is to increase the overall stability of the trolley. When the trolley moves or performs maintenance operations, the diagonal brace 64 can disperse the external force received by the trolley, preventing the trolley from tipping over or shaking due to uneven force.

[0034] As Figures 1 to 4As shown, through the coordinated action of each mechanism, the trolley can accurately reach different maintenance positions of the water turbine runner 1, eliminating the need for maintenance personnel to carry out dangerous operations by hanging ropes, greatly improving the maintenance efficiency and effectively ensuring the personal safety of maintenance personnel. The spaced arrangement of the mounting seats 51 of the inspection and detection mechanism 5 and the adaptive ability of the sliding wheels 61 enable the trolley to fully cover the outer wall of the runner during movement. Even for large U-shaped landslide structures with inclined surfaces, it can ensure a comprehensive inspection of the runner wall surface, avoiding the occurrence of maintenance blind spots. Through the spacing adjustment mechanism 3 and the lifting adjustment mechanism 4, the trolley can flexibly adjust the spacing and height from the runner according to different maintenance scenarios, meeting the multi-functional maintenance requirements in the complex environment of the water turbine runner 1 and ensuring the stable operation of the hydropower station.

[0035] As Figures 1 to 4As shown in the figure, this technical solution integrates a spacing adjustment mechanism 3, a lifting adjustment mechanism 4, an inspection and detection mechanism 5, and a sliding adjustment mechanism 6 on the trolley support 2 to achieve flexible adjustment of the spacing and height between the trolley and the flow channel, enable movement along the bank of the flow channel, detect the damage degree of the outer wall of the flow channel, and ensure the smooth movement and structural stability of the trolley to meet the multi-functional maintenance requirements in the complex environment of the hydropower station flow channel 1. Specifically, the horizontal adjustment lead screw 31 converts torque into linear motion through its rotational motion. When the horizontal adjustment lead screw 31 is rotated, due to the thread fit between the lead screw and the telescopic support 32 and the trolley support 2, it will push the telescopic support 32 to move horizontally relative to the trolley support 2, thereby realizing the adjustment of the spacing between the two; the horizontal locking switch 33 fixes the relative position of the two through bolt fastening to prevent the spacing from changing due to external forces during the maintenance process; the rotational motion of the vertical adjustment lead screw 41 drives the connected walking wheel 43 to move vertically; since the walking wheel 43 is connected to the trolley support 2, when the walking wheel 43 moves up and down, it will change the overall height of the trolley support 2, realizing the lifting adjustment of the trolley in the vertical direction; the design of the walking wheel 43 enables the trolley to move along the bank of the hydropower station flow channel 1, facilitating maintenance personnel to move the trolley to different maintenance positions; the vertical locking switch 42 prevents the trolley from moving accidentally during maintenance by locking the relative position of the trolley support 2 and the walking wheel 43; the inspection probe 52 performs ultrasonic detection, emits ultrasonic waves to the outer wall of the hydropower station flow channel 1, and the ultrasonic waves will be reflected when they encounter the flow channel wall surface. The probe receives the reflected wave and analyzes parameters such as its propagation time and frequency change to judge the thickness and internal defects of the flow channel wall surface, etc., realizing the detection of the damage degree of the flow channel; the mounting seats 51 are arranged at intervals on the trolley support 2 to expand the detection range of the inspection probe 52, enabling the trolley to fully cover the outer wall of the flow channel during movement; the inspection probe 52 is arranged facing the outer wall of the flow channel to ensure that it can directly detect the flow channel wall surface; the sliding wheel 61 abuts against the outer wall of the hydropower station flow channel 1. When the trolley moves in the flow channel, the sliding wheel 61 can roll along the flow channel wall surface to reduce the resistance of the trolley movement; the combination of the telescopic rod 62 and the return spring 63 enables the sliding wheel 61 to have a certain self-adaptive ability; when there are unevenness or local deformation on the flow channel wall surface, the return spring 63 will automatically adjust the length of the telescopic rod 62 according to the change of the wall surface, so that the sliding wheel 61 always maintains close contact with the wall surface; the diagonal brace 64 is arranged on the outer side of the bottom of the trolley support 2, and its function is to increase the overall stability of the trolley; when the trolley moves or performs maintenance operations, the diagonal brace 64 disperses the external forces received by the trolley to prevent the trolley from tipping over or shaking due to uneven force.

[0036] In addition, the multi-functional maintenance trolley applicable to the hydropower station flow channel 1 proposed above according to the present invention further has the following additional technical features: According to one embodiment of the present invention, the trolley bracket 2 is arranged in an L shape, including a horizontal section that cooperates with the bank of the hydropower station flow channel 1, a vertical section that has a certain gap with the outer wall of the hydropower station flow channel 1, and a bending section that interferes with the hydropower station flow channel 1; the spacing adjustment mechanism 3 is located at the inner end of the horizontal section, the lifting and lowering adjustment mechanism 4 is located on the upper surface of the horizontal section, the maintenance detection mechanism 5 is located in the gap of the vertical section, and the sliding adjustment mechanism 6 is located at the lower end of the bending section.

[0037] This technical solution designs the trolley bracket 2 into an L-shape and rationally arranges the positions of various mechanisms in the horizontal section, vertical section and bending section, so that each mechanism can play its own function in the overall structure of the trolley and achieve effective coordination with the flow channel 1 of the hydropower station to complete the flow channel maintenance operation.

[0038] According to one embodiment of the present invention, the telescopic bracket 32 ​​of the spacing adjustment mechanism 3 remains stationary, and the trolley bracket 2 is driven by the horizontal adjustment screw 31 to adjust the front and rear position relative to the telescopic bracket 32, thereby indirectly adjusting the gap width between the trolley bracket 2 and the hydropower station flow channel 1.

[0039] This technical solution keeps the telescopic bracket 32 ​​stationary in the spacing adjustment mechanism 3, and uses the horizontal adjustment screw 31 to drive the trolley bracket 2 to move forward and backward relative to the telescopic bracket 32, thereby indirectly adjusting the gap width between the trolley bracket 2 and the hydropower station flow channel 1, thereby meeting the requirements for the distance between the trolley and the flow channel in different maintenance scenarios.

[0040] According to an embodiment of the present invention, the running wheels 43 of the lifting and adjusting mechanism 4 are divided into four groups, which are respectively connected to the corresponding vertical adjusting screws 41 .

[0041] This technical solution achieves stability and flexibility in the lifting and lowering adjustment of the trolley bracket 2 by dividing the running wheels 43 of the lifting and adjusting mechanism 4 into four groups and connecting them to the corresponding vertical adjustment screws 41 respectively, thereby ensuring that the trolley can accurately reach different heights for maintenance.

[0042] According to one embodiment of the present invention, the vertical adjustment screw 41 of the lifting adjustment mechanism 4 adjusts the distance between the trolley support 2 and the shore ground, thereby indirectly adjusting the height of the sliding adjustment mechanism 6 against the side wall of the flow channel 1 of the hydropower station.

[0043] This technical solution uses the vertical adjustment screw 41 of the lifting adjustment mechanism 4 to adjust the distance between the trolley bracket 2 and the shore ground, and indirectly adjusts the height of the sliding adjustment mechanism 6 against the side wall of the hydropower station flow channel 1, so that the trolley can adapt to the flow channel maintenance positions at different heights, ensuring effective contact between the sliding wheel 61 and the side wall of the flow channel.

[0044] According to one embodiment of the present invention, a track matching with the running wheels 43 is provided on the bank of the flow channel 1 of the hydropower station.

[0045] This technical solution provides a stable path for the trolley to travel through the track, ensuring that the trolley can move accurately and smoothly along the shore, thereby improving the safety and efficiency of maintenance operations.

[0046] According to one embodiment of the present invention, the trolley bracket 2 is hoisted to a designated position of the flow channel 1 of the hydropower station by a gantry crane or an overhead crane, and is installed on a track that has been fixed in advance.

[0047] This technical solution uses a gantry crane or an overhead crane to hoist the trolley bracket 2 to a specified position of the flow channel 1 of the hydropower station, thereby achieving rapid and accurate installation of the trolley in the flow channel and preparing for maintenance operations.

[0048] According to one embodiment of the present invention, the inspection and detection mechanism 5 is built with a communication module, and the image of the outer wall of the flow channel 1 of the hydropower station detected by the detection probe is transmitted to the server through the communication module.

[0049] This technical solution realizes remote transmission and storage of detection data by building a communication module into the maintenance detection mechanism 5, which is convenient for subsequent analysis and processing and improves the information level of maintenance work.

[0050] According to an embodiment of the present invention, the sliding wheel 61 performs a telescopic motion along the bending section, and the sliding wheel 61 applies a pre-tightening force to the outer side wall of the flow channel 1 of the hydropower station.

[0051] This technical solution ensures that the sliding wheel 61 is always in close contact with the side wall of the flow channel by making the sliding wheel 61 extend and retract along the bending section of the trolley bracket 2, thereby improving the stability and reliability of the trolley movement and ensuring smooth maintenance work.

[0052] The usage process of the above embodiment is as follows: like Figures 1 to 4 As shown, before maintenance, the trolley is hoisted to the specified position of the flow channel by a gantry crane or an overhead crane and installed on a fixed track; the horizontal adjustment screw 31 is used to rotate the screw, and the screw is threadedly matched with the telescopic bracket 32 ​​and the trolley bracket 2, so that the trolley bracket 2 moves forward and backward relative to the telescopic bracket 32, and the distance between the two is adjusted, and then fixed by the horizontal locking switch 33, so as to indirectly adjust the width of the gap between the trolley bracket 2 and the flow channel to meet the maintenance spacing requirements; then, the vertical adjustment screw 41 is rotated to drive the running wheel 43 connected thereto to move up and down, change the height of the trolley bracket 2, and lift the trolley to a suitable position, and similarly, the vertical locking switch 42 is used to lock the relative position of the trolley bracket 2 and the running wheel 43 to prevent accidental movement; like Figures 1 to 4As shown, during maintenance, the trolley moves along the track, and the traveling wheels 43 drive the trolley to move along the side of the flow channel; the sliding wheels 61 abut against the outer side wall of the flow channel and roll as the trolley moves. The combination of the telescopic rod 62 and the return spring 63 enables the sliding wheels 61 to adapt to the unevenness or deformation of the flow channel wall surface and always keep close contact with the wall surface; the diagonal brace 64 disperses the external force of the trolley to ensure the smoothness of the trolley. At the same time, the ultrasonic inspection probe 52 of the inspection detection mechanism 5 emits ultrasonic waves to the outer side wall of the flow channel, receives the reflected waves and analyzes the parameters to judge the damage degree such as the wall thickness and internal defects. Since the mounting seats 51 are arranged at intervals, the outer side wall of the flow channel can be comprehensively detected; the detection data is transmitted to the server through the built-in communication module.

[0053] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A multifunctional maintenance trolley suitable for flow channels of hydropower stations, characterized in that: The invention comprises a trolley support (2) installed on a flow channel (1) of a hydropower station, wherein a spacing adjustment mechanism (3), a lifting adjustment mechanism (4), a maintenance detection mechanism (5) and a sliding adjustment mechanism (6) are installed on the trolley support (2), wherein: The spacing adjustment mechanism (3) is located at the upper end of the trolley support (2), and comprises a horizontal adjustment screw (31), a telescopic support (32) and a horizontal locking switch (33). The horizontal adjustment screw (31) runs through the telescopic support (32) and the trolley support (2), and the spacing between the telescopic support (32) and the trolley support (2) is adjusted by the horizontal adjustment screw (31). The horizontal locking switch (42) (33) is used to lock the relative position of the telescopic support (32) and the trolley support (2); The lifting and lowering adjustment mechanism (4) is located at the top of the upper part of the trolley support (2), and comprises a vertical adjustment screw (41), a vertical locking switch (42) and a running wheel (43). The vertical adjustment screw (41) passes through the trolley support (2) and is connected to the running wheel (43). The running wheel (43) drives the trolley support (2) to move along the bank of the flow channel (1) of the hydropower station; the vertical locking switch (42) is used to lock the relative position of the trolley support (2) and the running wheel (43); The inspection and detection mechanism (5) is located on the inner side of the middle part of the trolley support (2), and comprises a mounting seat (51) and an inspection probe (52). The mounting seat (51) is arranged on the trolley support (2) at intervals, and the mounting seat (51) is provided with an inspection probe (52). The inspection probe (52) is arranged toward the outer wall of the flow channel (1) of the hydropower station, and is used to detect the degree of damage of the flow channel (1) of the hydropower station; The sliding adjustment mechanism (6) is located at the bottom end of the trolley support (2), and comprises a sliding wheel (61), a telescopic rod (62), a return spring (63) and an inclined support frame (64). The sliding wheel (61) abuts against the outer wall of the flow channel (1) of the hydropower station, one end of the telescopic rod (62) is provided with the sliding wheel (61), and the other end of the telescopic rod (62) is movably arranged in the trolley support (2) through the return spring (63); and an inclined support frame (64) is also arranged on the outer side of the bottom of the trolley support (2).

2. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 1, characterized in that: The trolley support (2) is arranged in an L-shape, comprising a horizontal section matching the bank of the hydropower station flow channel (1), a vertical section having a certain gap with the outer wall of the hydropower station flow channel (1), and a bending section contacting the hydropower station flow channel (1); the spacing adjustment mechanism (3) is located at the inner end of the horizontal section, the lifting adjustment mechanism (4) is located on the upper surface of the horizontal section, the inspection and detection mechanism (5) is located in the gap of the vertical section, and the sliding adjustment mechanism (6) is located at the lower end of the bending section.

3. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 1 is characterized in that: The telescopic bracket (32) of the spacing adjustment mechanism (3) remains stationary, and the trolley bracket (2) is driven by the horizontal adjustment screw (31) to adjust the front and rear position relative to the telescopic bracket (32), thereby indirectly adjusting the gap width between the trolley bracket (2) and the flow channel (1) of the hydropower station.

4. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 1, characterized in that: The running wheels (43) of the lifting and lowering adjustment mechanism (4) are divided into four groups, which are respectively connected to corresponding vertical adjustment screws (41).

5. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 1, characterized in that: The vertical adjustment screw (41) of the lifting adjustment mechanism (4) adjusts the distance between the trolley support (2) and the shore ground, thereby indirectly adjusting the height of the sliding adjustment mechanism (6) against the side wall of the hydropower station flow channel (1).

6. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 4 is characterized in that: The bank of the flow channel (1) of the hydropower station is provided with a track matching with the running wheels (43).

7. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 6, characterized in that: The trolley support (2) is hoisted to a designated position of the flow channel (1) of the hydropower station by means of a gantry crane or an overhead crane, and is installed on a track that has been fixed in advance.

8. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 1, characterized in that: The inspection and detection mechanism (5) is equipped with a communication module, and the image of the outer wall of the flow channel (1) of the hydropower station detected by the detection probe is transmitted to the server through the communication module.

9. The multifunctional maintenance trolley for flow passages in a hydropower station as claimed in claim 2, characterized in that: The sliding wheel (61) performs a telescopic movement along the bending section, and the sliding wheel (61) applies a pre-tightening force to the outer side wall of the flow channel (1) of the hydropower station.

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