A wind turbine adjustment device

By introducing an adjustment device consisting of connecting pipes and hydraulic components into the wind turbine, rapid blade deflection adjustment and stall protection are achieved, solving the control limitations of existing devices and improving adjustment efficiency and equipment lifespan.

CN118167549BActive Publication Date: 2026-01-30QINGDAO RELIANCE MASCH CO LTD
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Patent Information

Application Number
CN202410333233.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-03-22
Publication Date
2026-01-30
Estimated Expiration
2044-03-22

AI Technical Summary

Technical Problem

Existing blade adjustment devices lack an effective stall detection and adjustment structure, which leads to limitations in blade rotation control when the motor is damaged.

Method used

The wind turbine adjustment device, consisting of connecting pipes, guide grooves, drivers, and hydraulic components, achieves rapid blade deflection adjustment through the meshing transmission of drive gears and guide teeth. In the event of driver failure, hydraulic components are used to assist in correction and prevent blade stall.

Benefits of technology

This improves the efficiency of blade adjustment, avoids blade damage caused by stall, and extends the service life of wind turbines.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention proposes a wind turbine adjustment device, relating to the field of blade adjustment. A through-hole, serving as a mounting hole, is provided inside the first flange in a ring-shaped arrangement. An annular groove is formed on the inner wall of the connecting pipe. This invention addresses the limitations of traditional blade adjustment devices, which typically rely on a motor driving gears to adjust the blade deflection angle. These devices often lack an effective stall detection and adjustment structure, making it difficult to control blade rotation if the motor malfunctions. By utilizing a second hydraulic component within the mounting base to assist in the deflection adjustment of the blades mounted on the guide tube and second flange, this invention effectively prevents damage caused by blade stall, extending the service life of the wind turbine.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the field of blade adjustment, and particularly relates to a wind driven generator adjusting device. BACKGROUND

[0002] The wind driven generator is a power equipment for converting wind energy into mechanical work, rotating the rotor, and finally outputting alternating current. The wind driven generator generally comprises a wind wheel, a generator (including a device), a direction adjuster (a tail wing), a tower, a speed limiting safety mechanism, and an energy storage device. The blades in the wind driven generator need to be deflected and adjusted according to the size of wind flow to prevent damage caused by over-speed rotation. The corresponding adjusting device is needed to rotate and adjust the blades. The existing blade adjusting device generally relies on the rotation of the gear driven by the motor to adjust the deflection angle of the blades. However, the deflection adjustment lacks effective stall detection adjustment structure, which affects the rotation control of the blades when the motor is damaged, and has limitations.

[0003] Therefore, in view of the above-mentioned problems in actual production and implementation, the present application is modified and improved. The present application is created based on the spirit and concept of seeking good, the assistance of professional knowledge and experience, and the trial of multiple ideas. The present application provides a wind driven generator adjusting device to solve the above-mentioned problems. SUMMARY

[0004] The present application provides a wind driven generator adjusting device, which solves the problem that the existing blade adjusting device generally relies on the rotation of the gear driven by the motor to adjust the deflection angle of the blades. The deflection adjustment lacks effective stall detection adjustment structure, which affects the rotation control of the blades when the motor is damaged, and has limitations.

[0005] The technical scheme of the application is implemented as follows: a wind power generator adjusting device comprises a connecting pipe, the main body of the connecting pipe is a hollow tubular structure, a longitudinal groove is formed on the outer periphery of the connecting pipe, the longitudinal groove is a guide groove, two guide grooves are formed on the left and right sides of the outer periphery of the connecting pipe, the two guide grooves are both bidirectional closed structures, a first flange plate is fixedly connected to the outer periphery of the connecting pipe, the main body of the first flange plate is an annular structure, the diameter of the first flange plate is larger than the diameter of the connecting pipe, a through hole is formed in the first flange plate, the through hole is an installation hole, an annular groove is formed on the inner wall of the connecting pipe, and two annular grooves are linearly arranged on the inner wall of the connecting pipe.

[0006] As a preferred embodiment, the main body of the connecting block is an annular structure, two connecting blocks are linearly arranged and fixedly connected to the outer periphery of the guide pipe, the guide pipe is rotatably connected to the inner part of the connecting pipe through the two connecting blocks fixedly connected to the outer periphery of the guide pipe, a connecting plate is fixedly connected to the outer periphery of the guide pipe, two connecting plates are linearly arranged and fixedly connected to the left and right sides of the outer periphery of the guide pipe, and a limiting component is fixedly connected to the outer periphery of the two connecting plates.

[0007] As a preferred embodiment, the two moving blocks are fixedly connected to the front and rear sides of the two moving frames, respectively, an electromagnetic component is fixedly connected to the outer periphery of the two moving frames, the main body of the electromagnetic component is an annular structure, the electromagnetic component and the moving block jointly form an adsorbing limiting structure, a guide pipe is installed in the connecting pipe, the main body of the guide pipe is a tubular structure penetrating through the upper and lower sides, the diameter of the guide pipe is smaller than the diameter of the connecting pipe, and a connecting block is fixedly connected to the outer periphery of the guide pipe.

[0008] As a preferred embodiment, the detection component is fixedly connected to a connecting rod at the end away from the second hydraulic component, the main body of the connecting rod is a cylindrical structure, the diameter of the connecting rod is consistent with the diameter of the output end of the second hydraulic component, a connecting plate is fixedly connected to the side of the connecting rod away from the detection component, the side of the connecting plate away from the connecting rod is hingedly connected to the connecting seat, a guide shaft is fixedly connected to the top end surface of the connecting seat, connecting frames are annularly arranged and fixedly connected to the outer periphery of the guide shaft, and the connecting frames are connected to the inner wall of the guide pipe.

[0009] As a preferred implementation form, the guide groove formed on the outer peripheral surface of the connecting pipe is internally provided with a first hydraulic component, the first hydraulic component is provided in two parts, and the two first hydraulic components are oppositely arranged on the left and right sides of the outer peripheral surface of the connecting pipe, and the top end surface of each of the two first hydraulic components is provided with a moving frame, the moving frame is located in the interior of the guide groove formed on the outer peripheral surface of the connecting pipe, and the outer side of the moving frame is fixedly connected with a moving block, and the moving block is provided in four parts, wherein every two longitudinally adjacent moving blocks form a group.

[0010] As a preferred implementation form, the inner wall of the connecting pipe is fixedly connected with a mounting seat, the mounting seat is provided in two parts, and the two mounting seats are oppositely fixedly connected on the front and rear sides of the inner wall of the connecting pipe, and the bottom end surface of each of the two mounting seats is provided with a driver, and the top end surface of the driver is provided with an output shaft, the output shaft penetrates the mounting seat upward and protrudes from the mounting seat, and the top end of the driver is provided with an output shaft, the output shaft penetrates the mounting seat upward, and the output shaft provided on the top end of the driver is provided with a driving gear, and the driving gear and the driver together form a rotating driving structure, and the driving gear is in meshing transmission with a guide tooth fixedly connected on the inner wall of the guide pipe.

[0011] As a preferred implementation form, the limiting assembly is matched with an electromagnetic component fixedly connected to the outer side of the moving frame, the top end surface of the guide pipe is fixedly connected with a second flange plate, the diameter of the second flange plate is consistent with the diameter of the first flange plate, the structure of the second flange plate is consistent with the structure of the first flange plate, the inner wall of the guide pipe is fixedly connected with a guide tooth, the guide tooth is fixedly connected in an annular array on the inner wall of the guide pipe, and the guide pipe and the guide tooth together form an adjusting structure.

[0012] As a preferred implementation form, the inner wall of the connecting pipe is fixedly connected with a mounting seat, the mounting seat is provided in four parts, wherein every two longitudinally adjacent mounting seats form a group, and the two groups of mounting seats are oppositely fixedly connected on the left and right sides of the inner wall of the connecting pipe, and the inner side of each of the two groups of mounting seats is rotatably connected with a second hydraulic component, the second hydraulic component is rotatably connected with the mounting seat, and the output end of the second hydraulic component is provided with a detection component.

[0013] After the above technical scheme is adopted, the application has the following beneficial effects:

[0014] 1、In the application, the bottom end of the mounting seat is provided with a driver and a driving gear, so that when the blades installed on the guide pipe and the second flange plate in the connecting pipe need to be adjusted, the driver installed on the bottom end surface of the mounting seat can be started to rotate and drive the driving gear, and the driving gear can be in meshing transmission with the guide tooth arranged on the inner wall of the guide pipe to quickly adjust the deflection of the blades. Compared with the traditional blade adjustment method, the adjustment efficiency of the blades can be significantly improved.

[0015] 2、The conduit of the application, by setting the connecting frame and guide shaft on the inner wall of the conduit and the connecting seat, so that when the drive and drive gear are damaged, the second hydraulic part in the mounting seat can be used to adjust the deflection of the blades installed on the second flange plate, so that the damage caused by the stall of the blades can be effectively avoided, and the service life of the wind turbine is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 It is a front side view structure schematic diagram of the adjusting device of the application in the cut state.

[0018] Figure 2 It is an assembly structure schematic diagram of the adjusting device of the application.

[0019] Figure 3 It is a cut structure schematic diagram of the conduit of the adjusting device of the application.

[0020] Figure 4 It is a connecting pipe cut structure schematic diagram of the adjusting device of the application.

[0021] Figure 5 It is a split structure schematic diagram of the adjusting device of the application.

[0022] Figure 6 It is a left side view structure schematic diagram of the adjusting device of the application.

[0023] Figure 7 It is a Figure 4 enlarged structure schematic diagram of the adjusting device of the application in A.

[0024] Figure 8 It is a Figure 5 enlarged structure schematic diagram of the adjusting device of the application in B.

[0025] In the figure, 1, connecting pipe; 101, guide groove; 102, first flange plate; 103, mounting hole; 2, first hydraulic part; 201, moving frame; 202, moving block; 203, electromagnetic part; 3, guide pipe; 301, connecting block; 302, connecting plate; 303, limiting assembly; 304, second flange plate; 305, guide tooth; 4, mounting pedestal; 401, driver; 402, drive gear; 5, mounting seat; 501, second hydraulic part; 502, detection part; 503, connecting rod; 504, connecting part; 505, connecting seat; 506, guide shaft; 507, connecting frame. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] As Figures 1-8 shown, a wind turbine adjusting device comprises a connecting pipe 1, the main body of the connecting pipe 1 is a hollow tubular structure, and a longitudinal groove is formed on the outer peripheral surface of the connecting pipe 1, the longitudinal groove is a guide groove 101, the two guide grooves 101 are oppositely formed on the left and right sides of the outer peripheral surface of the connecting pipe 1, and the two guide grooves 101 are both bidirectional closed structures on the upper and lower sides, and a first flange plate 102 is fixedly connected to the outer peripheral surface of the connecting pipe 1, the main body of the first flange plate 102 is an annular structure, the diameter of the first flange plate 102 is greater than the diameter of the connecting pipe 1, a through hole is formed in the first flange plate 102, the through hole is a mounting hole 103, the mounting hole 103 is annularly arranged in the inner part of the first flange plate 102, an annular groove is formed on the inner wall of the connecting pipe 1, the two annular grooves are linearly arranged on the inner wall of the connecting pipe 1, a connecting rod 503 is fixedly connected to one end of the detection part 502 away from the second hydraulic part 501, the main body of the connecting rod 503 is a cylindrical structure, the diameter of the connecting rod 503 is consistent with the diameter of the output end of the second hydraulic part 501, a connecting part 504 is fixedly connected to one side of the connecting rod 503 away from the detection part 502, one side of the connecting part 504 away from the connecting rod 503 is hingedly connected to a connecting seat 505, a guide shaft 506 is fixedly connected to the top end surface of the connecting seat 505, a connecting frame 507 is annularly arranged and fixedly connected to the outer peripheral surface of the guide shaft 506, and the connecting frame 507 is connected to the inner wall of the guide pipe 3.

[0028] The inside of the guide groove 101 opened on the outer peripheral surface of the connecting pipe 1 is provided with the first hydraulic part 2, and the first hydraulic part 2 is provided with two parts, and the two first hydraulic parts 2 are oppositely arranged on the left and right sides of the outer peripheral surface of the connecting pipe 1, and the top surface of the two first hydraulic parts 2 is provided with a moving frame 201, and the moving frame 201 is located in the inside of the guide groove 101 opened on the outer peripheral surface of the connecting pipe 1, and the outer side of the moving frame 201 is fixedly connected with a moving block 202, and the moving block 202 is provided with four parts, wherein every two longitudinally adjacent moving blocks 202 form a group, and the two moving blocks 202 are oppositely fixedly connected to the front and rear sides of the two moving frames 201, and the outer peripheral surface of the two moving frames 201 is fixedly connected with an electromagnetic part 203, and the main body of the electromagnetic part 203 is an annular structure, and the electromagnetic part 203 and the moving block 202 jointly form an adsorbing limiting structure, and the inside of the connecting pipe 1 is provided with a conduit 3, and the main body of the conduit 3 is a double-direction v-shaped tubular structure, and the diameter of the conduit 3 is smaller than that of the connecting pipe 1, and the outer peripheral surface of the conduit 3 is fixedly connected with a connecting block 301.

[0029] The main body of the connecting block 301 is an annular structure, and the connecting block 301 is provided with two parts, and the two connecting blocks 301 are fixedly connected in a straight line array on the outer peripheral surface of the conduit 3, and the conduit 3 is rotatably connected to the inside of the connecting pipe 1 through the two connecting blocks 301 fixedly connected to the outer peripheral surface thereof, and the outer peripheral surface of the conduit 3 is fixedly connected with a connecting plate 302, and the connecting plate 302 is provided with two parts, and the two connecting plates 302 are fixedly connected in a straight line array on the left and right sides of the outer peripheral surface of the conduit 3, and the outer peripheral surface of the two connecting plates 302 is further fixedly connected with a limiting assembly 303, and the main body of the limiting assembly 303 is an annular structure, and the limiting assembly 303 is matched with the electromagnetic part 203 fixedly connected to the outer side of the moving frame 201, and the top surface of the conduit 3 is fixedly connected with a second flange 304, and the diameter of the second flange 304 is consistent with that of the first flange 102, and the structure of the second flange 304 is consistent with that of the first flange 102, and the inner wall of the conduit 3 is fixedly connected with a guide tooth 305, and the guide tooth 305 is fixedly connected in an annular array on the inner wall of the conduit 3, and the conduit 3 and the guide tooth 305 jointly form an adjusting structure.

[0030] The inner wall of the connecting pipe 1 is fixedly connected with the mounting seat 4, the mounting seat 4 is provided in two positions, and the two mounting seats 4 are fixedly connected to the front and rear positions of the inner wall of the connecting pipe 1, and the bottom end faces of the two mounting seats 4 are both provided with a driver 401, and the top end face of the driver 401 is provided with an output shaft, the output shaft passes through the mounting seat 4 in the upward direction and protrudes from the mounting seat 4, and the top end of the driver 401 is provided with an output shaft, the output shaft passes through the mounting seat 4 in the upward direction, and the output shaft provided at the top end of the driver 401 is provided with a driving gear 402, and the driving gear 402 and the driver 401 jointly form a rotating driving structure, and the driving gear 402 is in meshing transmission with the guide gear 305 fixedly connected to the inner wall of the guide pipe 3, the inner wall of the connecting pipe 1 is fixedly connected with the mounting seat 5, the mounting seat 5 is provided in four positions, wherein every two longitudinally adjacent mounting seats 5 form a group, and the two groups of mounting seats 5 are fixedly connected to the left and right positions of the inner wall of the connecting pipe 1, and the inner sides of the two groups of mounting seats 5 are rotatably connected with a second hydraulic component 501, and the second hydraulic component 501 is rotatably connected with the mounting seat 5, and the output end of the second hydraulic component 501 is provided with a detection component 502.

[0031] In use, when the blades in the wind turbine need to be deflected and adjusted, the connecting pipe 1 can be assembled onto the main machine in the wind turbine by using the first flange plate 102 fixedly connected to the outer side of the connecting pipe 1, and simultaneously using bolt reinforcement and the like to assemble the main body of the connecting pipe 1, and when assembling, the blades in the wind turbine need to be assembled onto the second flange plate 304 fixedly connected to the outer side of the guide pipe 3, and the assembly work of the blades and the connecting pipe 1 and the like is completed.

[0032] When the blades need to be deflected and adjusted, the driver 401 mounted on the bottom end face of the two mounting seats 4 can be started to rotate and drive the driving gear 402 provided on the output shaft at the top end of the driver 401, and the driving gear 402 and the guide gear 305 provided on the inner wall of the guide pipe 3 are in meshing transmission to realize the rotating drive of the current guide pipe 3, and when the guide pipe 3 rotates, the two connecting blocks 301 fixedly connected to the outer side thereof can be used to guide and rotate around the annular groove provided on the inner wall of the connecting pipe 1, so as to simultaneously adjust the angle of the blades mounted on the outer side of the second flange plate 304.

[0033] And in when the utility process, if in when the drive gear 402 installed on the top of the driver 401 appears abnormal, the blade will bring the deflection of the guide pipe 3, and in when the guide pipe 3 deflection, can simultaneously bring the detection piece 502 set outside the second hydraulic piece 501 to pull, if in when the detection piece 502 hand pull, can be synchronized to the front end of the control computer, at this time can automatically start the second hydraulic piece 501 installed in two mounting seat 5 to the connecting seat 505 set on the bottom surface of the guide shaft 506 to the guide pipe 3 and the blade to carry on the quick rectification operation.

[0034] In the description of the present application, it is understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified and limited, it is necessary to explain that the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication between two elements, it can be directly connected, or indirectly connected through intermediate medium, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wind power generator adjustment device, characterized by, The utility model provides a connecting pipe (1), the main part of connecting pipe (1) is the tubular structure of inside hollow, and the outer peripheral surface of connecting pipe (1) is equipped with longitudinal slot, the longitudinal slot is guide groove (101), guide groove (101) is equipped with two, and two guide grooves (101) are opposite and are equipped with on the left and right sides of the outer peripheral surface of connecting pipe (1), and two guide grooves (101) are both two -sided closed structure of up and down, and the outer peripheral surface of connecting pipe (1) is fixedly connected with first flange (102), the main part of first flange (102) is annular structure, and the diameter of first flange (102) is greater than the diameter of connecting pipe (1), and the inside of first flange (102) is equipped with through -hole, the through -hole is mounting hole (103), mounting hole (103) is annular and is equipped with on the inside of first flange (102), and the inner wall of connecting pipe (1) is equipped with annular groove, the annular groove is equipped with two, and two annular grooves are in linear array and are equipped on the inner wall of connecting pipe (1); The inside of guide groove (101) that the outer peripheral surface of connecting pipe (1) is equipped with is installed with first hydraulic (2), first hydraulic (2) is equipped with two, and two first hydraulics (2) are opposite and are installed on the left and right sides of the outer peripheral surface of connecting pipe (1), and the top end surface of two first hydraulics (2) is all installed with moving frame (201), moving frame (201) is located in the inside of guide groove (101) that the outer peripheral surface of connecting pipe (1) is equipped with, and the outside of moving frame (201) is fixedly connected with moving block (202), moving block (202) is equipped with four, wherein every two longitudinally adjacent moving blocks (202) are a group; Two moving blocks (202) are opposite and are fixedly connected on the front and back sides of two moving frames (201) respectively, and the outer peripheral surface of two moving frames (201) is fixedly connected with electromagnetic (203), the main part of electromagnetic (203) is annular structure, and electromagnetic (203) and moving block (202) jointly constitute adsorption limiting structure, and the inside of connecting pipe (1) is installed with guide pipe (3), the main part of guide pipe (3) is the tubular structure of two -sided penetration of up and down, and the diameter of guide pipe (3) is less than the diameter of connecting pipe (1), and the outer peripheral surface of guide pipe (3) is fixedly connected with connecting block (301).

2. A wind turbine adjustment device according to claim 1, characterised in that The main part of connecting block (301) is annular structure, and connecting block (301) is equipped with two, and two connecting blocks (301) are in linear array and are fixedly connected on the outer peripheral surface of guide pipe (3), and guide pipe (3) is rotatably connected in the inside of connecting pipe (1) through two connecting blocks (301) fixedly connected on the outer peripheral surface thereof, and the outer peripheral surface of guide pipe (3) is fixedly connected with connecting plate (302), connecting plate (302) is equipped with two, and two connecting plates (302) are in linear array and are fixedly connected on the left and right sides of the outer peripheral surface of guide pipe (3), and the outer peripheral surface of two connecting plates (302) is still fixedly connected with limiting assembly (303), and the main part of limiting assembly (303) is annular structure.

3. A wind turbine adjustment device according to claim 2, wherein, The limiting assembly (303) is matched with the electromagnetic element (203) fixedly connected to the outside of the moving frame (201), a second flange plate (304) is fixedly connected to the top end surface of the catheter (3), the diameter of the second flange plate (304) is consistent with the diameter of the first flange plate (102), the structure of the second flange plate (304) is consistent with the structure of the first flange plate (102), and a guide gear (305) is fixedly connected to the inner wall of the catheter (3), the guide gear (305) is fixedly connected to the inner wall of the catheter (3) in an annular array, and the catheter (3) and the guide gear (305) jointly form an adjusting structure.

4. A wind turbine adjustment device according to claim 1, wherein, The inner wall of the connecting pipe (1) is fixedly connected with a mounting seat (4), the mounting seat (4) is provided with two mounting seats (4), and the two mounting seats (4) are fixedly connected to the front and rear positions of the inner wall of the connecting pipe (1), and the bottom end surface of the two mounting seats (4) is provided with a drive (401), the top end surface of the drive (401) is provided with an output shaft, the output shaft passes through the mounting seat (4) to the upper side and protrudes from the mounting seat (4), and the top end of the drive (401) is provided with an output shaft, the output shaft passes through the mounting seat (4) to the upper side, and the output shaft provided on the top end of the drive (401) is provided with a driving gear (402), the driving gear (402) and the drive (401) jointly form a rotating drive structure, and the driving gear (402) is engaged with the guide gear (305) fixedly connected to the inner wall of the catheter (3).

5. A wind turbine adjustment device according to claim 1, wherein, The inner wall of the connecting pipe (1) is fixedly connected with a mounting seat (5), the mounting seat (5) is provided with four mounting seats (5), wherein every two longitudinally adjacent mounting seats (5) form a group, and the two groups of mounting seats (5) are fixedly connected to the left and right positions of the inner wall of the connecting pipe (1), and the inner sides of the two groups of mounting seats (5) are rotatably connected with a second hydraulic element (501), the second hydraulic element (501) is rotatably connected with the mounting seat (5), and the output end of the second hydraulic element (501) is provided with a detection element (502).

6. A wind turbine adjustment device according to claim 5, wherein, The end of the detection element (502) away from the second hydraulic element (501) is fixedly connected with a connecting rod (503), the main body of the connecting rod (503) is a cylindrical structure, the diameter of the connecting rod (503) is consistent with the diameter of the output end of the second hydraulic element (501), the side of the connecting rod (503) away from the detection element (502) is fixedly connected with a connecting element (504), the side of the connecting element (504) away from the connecting rod (503) is hingedly connected with a connecting seat (505), the top end surface of the connecting seat (505) is fixedly connected with a guide shaft (506), the outer circumferential surface of the guide shaft (506) is fixedly connected with a connecting frame (507) in an annular array, and the connecting frame (507) is connected with the inner wall of the catheter (3).

Citation Information

Patent Citations

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