Maintenance detection device and method for piston rod of hydraulic hoist

Abstract

The invention provides a hydraulic hoist piston rod maintenance detection device and method.The hydraulic hoist piston rod maintenance detection device comprises an upper end annular component and a lower end annular component, the upper end annular component and the lower end annular component are connected through a connecting plate, the connecting plate is further connected with a sweeping and oiling device, and the sweeping and oiling device is connected with an annular dirt scraping ring; the annular dirt scraping ring is used for cleaning oil sludge and an ash layer adsorbed on the surface of the piston rod, a high-definition camera and an oil supply device are installed on the upper end annular component, and the oil supply device is used for cleaning and providing oil for the oil coating device. The device can work up and down along the piston rod through the driving trolley and the magnetic adsorption mode, meanwhile, the device can remove oil stains and dust layers adsorbed on the piston rod through the dirt scraping ring and the cleaning and oiling brush, maintenance of the piston rod is facilitated, and defect inspection can be conducted on the piston rod.

Description

Technical Field

[0001] The present invention relates to the technical field of gate hoist maintenance, and in particular to a hydraulic gate hoist piston rod maintenance and detection device and method. Background Art

[0002] The hydraulic gate hoist of a hydropower station is an important actuator for gate opening and closing. Since some gates are in a closed state for a long time, the piston rods of the gate hoists are in an extended and exposed state. Therefore, the piston rods exposed to the air may be contaminated with a lot of dust, or the contact between the oil seepage from the lower end cover of the gate hoist and the dust may produce sludge. At the same time, the moisture in the air may enter the surface of the piston rod through the pores of the coating, causing the piston rod to rust. In the long run, it will have a certain impact on the quality of the piston rod and its subsequent operation. The extension length of the piston rod of the hydraulic gate hoist can reach about 15m. There is no maintenance and observation platform in the operating area of ​​the piston rod, so maintenance personnel cannot clean and inspect the surface of the piston rod.

[0003] Currently, maintenance personnel only stand on the top of the door and observe through a telescope. Due to the dim light in the environment, they are unable to detect local defects in the piston rod. Summary of the invention

[0004] The purpose of the present invention is to provide a maintenance and inspection device and method for the piston rod of a hydraulic gate hoist in view of the defects existing in the prior art. Through the present invention, the dilemma that personnel are unable to check the surface coating of the piston rod and clean the surface stains can be solved. The device can be ensured to operate up and down along the piston rod by driving the trolley and the magnetic adsorption method. At the same time, the device adopts a scraping ring and a cleaning oiling brush to remove the oil and dust layers adsorbed on the piston rod. The device has a built-in high-definition camera to identify defects. The multi-functional integration not only facilitates the maintenance of the piston rod, but also can perform defect inspection on the piston rod.

[0005] A first aspect of the present invention provides a maintenance and inspection device for a piston rod of a hydraulic gate hoist, comprising an upper annular component and a lower annular component, the upper annular component and the lower annular component are connected by a connecting plate, a cleaning and oiling device is also connected to the connecting plate, the cleaning and oiling device is connected to an annular scraping ring, the annular scraping ring is used to clean the oil sludge and ash layer adsorbed on the surface of the piston rod, two high-definition cameras and an oil supply device are installed on the upper annular component, the two high-definition cameras are symmetrically arranged, the high-definition cameras are used to scan the coating defects on the surface of the piston rod, and the oil supply device is used to provide oil to the cleaning and oiling device; It also includes a magnetic drive trolley and a rotating drive component installed on the magnetic drive trolley, the magnetic drive trolley is used to be magnetically connected to the piston rod and support the lower end ring component through the rotating drive component, the rotating drive component is used to drive the lower end ring component, so that the lower end ring component drives the annular scraper ring, the high-definition camera and the cleaning and oiling device to rotate around the piston rod.

[0006] Preferably, the annular scraper ring comprises four annular structures, which are detachably connected to form an annular scraper ring after being connected.

[0007] Preferably, the cleaning and oiling device comprises a support block and a brush detachably arranged on the support block, an oil circuit is arranged inside the support block and is connected to an oil supply device through a hose, and the oil supply device provides oil to soak the brush in the oil.

[0008] Preferably, the oil supply device includes a screw motor, an oil storage cylinder and a power supply. The motor is operated so that the oil in the oil storage cylinder is pressed into the cleaning and oiling device. The power supply is used to power the high-definition camera and the screw motor.

[0009] Preferably, the upper annular component and the lower annular component are both formed by connecting a plurality of annular sheets.

[0010] Preferably, the rotating drive component includes a motor installed on the magnetic drive trolley, a driving wheel is installed on the rotating shaft of the motor, and the driving wheel abuts against the lower end surface of the lower end annular component.

[0011] Preferably, the rotating drive component includes a motor mounted on the magnetic drive trolley, a gear is mounted on the rotating shaft of the motor, and the gear is meshed and connected with a driving tooth provided on the lower section of the lower end annular component.

[0012] A second aspect of the present invention provides a method for maintaining and inspecting the piston rod of a hydraulic gate hoist, using a maintenance and inspection device for the piston rod of a hydraulic gate hoist as described in any one of the above items, specifically comprising the following steps: S1 connects the magnetic drive trolley to the piston rod by magnetic attraction, assembles the upper annular component, the connecting plate and the lower annular component around the piston rod so that the lower annular component is supported on the rotating drive component, and then installs the cleaning and oiling device, the oil supply device and the high-definition camera; S2 starts the rotating drive component, so that the cleaning and oiling device rotates one circle to clean the piston rod in the area where the bristles are located. At the same time, the high-definition camera performs a 360-degree inspection of the cleaning part of the piston rod without blind spots. If defects are found, they are transmitted back to the ground control console through image transmission; S3 starts the magnetic drive trolley to move upward or downward again, and starts the rotary drive component again, so that the cleaning and oiling device rotates around the piston rod in the area where the bristles are located, until all positions of the piston rod are cleaned; After the S4 detection is completed, the device returns to the starting section of the piston rod, replaces a new brush, starts the oil supply device so that the brush surface is soaked in oil, and repeats steps S2-S3 to oil the piston rod surface.

[0013] Preferably, the length of the brush is defined as L, the linear speed of the magnetically driven trolley is defined as V, the single oil supply time of the oil supply device is defined as t1, the time for controlling the rotating device to rotate one circle is defined as t2, and the start-up cycle of the rotating drive component is defined as T=t1+t2+L / V.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention solves the problem that the piston rod of the oil cylinder of a large hydraulic gate hoist cannot be inspected, cleaned, or maintained. The device can better protect the piston rod of the gate hoist, and at the same time, maintenance personnel can better understand the equipment status, which is an important guarantee for the operation of the equipment.

[0015] 2. The present invention integrates the three functions of cleaning, maintenance and repair of the piston rod into one device. By adopting the magnetic adsorption method, it can ensure that the device can move up and down on the piston rod, and the operation is reliable and the operation efficiency is high.

[0016] 3. In the present invention, the piston rod is first cleaned and then oiled, and the operation process is monitored by a high-definition camera, which improves the maintenance and repair efficiency of the piston rod and optimizes the maintenance process of the piston rod, thereby achieving a better maintenance effect of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a top view of the structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the cleaning and oiling device in the present invention.

[0020] Figure 4 It is a schematic diagram of the implementation status of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of a rotating drive component in an embodiment of the present invention.

[0022] Figure 6 It is a schematic structural diagram of a rotary drive component in another embodiment of the present invention.

[0023] In the figure: 1. annular scraper ring; 2. high-definition camera; 3. cleaning and oiling device; 31. brush; 32. support block; 4. connecting plate; 5. oil supply device; 6. upper end annular component; 7. lower end annular component; 8. rotating drive component; 9. magnetic drive trolley. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary descriptions and cannot be understood as limitations on this patent; in order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted; the positional relationship described in the drawings is only used for exemplary descriptions and cannot be understood as limitations on this patent.

[0025] As an embodiment of the present invention, see the attached Figure 1-Figure 6 The present embodiment provides a maintenance and inspection device for the piston rod of a hydraulic gate hoist, comprising an upper annular component 6 and a lower annular component 7, the upper annular component 6 and the lower annular component 7 are connected by a connecting plate 4, the connecting plate 4 is also connected with a cleaning and oiling device 3, the cleaning and oiling device 3 is connected with an annular scraping ring 1, the annular scraping ring 1 is used to clean the sludge and ash layer adsorbed on the surface of the piston rod, two high-definition cameras 2 and an oil supply device 5 are installed on the upper annular component 6, the two high-definition cameras 2 are symmetrically arranged, the high-definition cameras 2 are used to scan the coating defects on the surface of the piston rod, and the oil supply device 5 is used to provide oil to the cleaning and oiling device 3; It also includes a magnetic drive trolley 9 and a rotating drive component 8 installed on the magnetic drive trolley 9. The magnetic drive trolley 9 is used to be magnetically connected to the piston rod and support the lower end annular component 7 through the rotating drive component 8. The rotating drive component 8 is used to drive the lower end annular component 7, so that the lower end annular component 7 drives the annular scraper ring 1, the high-definition camera 2 and the cleaning and oiling device 3 to rotate around the piston rod.

[0026] In some preferred embodiments, Figure 1 and Figure 4 As shown, the annular scraper ring 1 includes four annular structures, and the four annular structures are detachably connected. The four annular structures can be connected in a snap-fit ​​manner to form the annular scraper ring 1. Of course, the four annular structures can also be connected by bolts. The detachable connection is mainly used to simplify the disassembly and assembly process before and after use and to facilitate storage.

[0027] In some preferred embodiments, Figure 3 As shown, the cleaning and oiling device 3 includes a support block 32 and a brush 31 detachably arranged on the support block 32. An oil circuit is arranged inside the support block 32 and is connected to the oil supply device 5 through a hose. The oil supply device 5 provides oil to soak the brush 31 in the oil.

[0028] In other preferred embodiments, Figure 1As shown, the oil supply device 5 includes a screw motor, an oil storage cylinder and a power supply. The motor is operated so that the oil in the oil storage cylinder is pressed into the cleaning and oiling device 3. The power supply is used to power the high-definition camera and the screw motor. The function of the oil supply device 5 is to supply oil to the brush 31. Its structure is assembled by connecting the known screw motor, oil storage cylinder and power supply. This embodiment does not repeat the above-mentioned known structure.

[0029] In the embodiment of the present invention, as is well known, it should be understood that as a driving device, the magnetic drive trolley 9 in this embodiment is equipped with a motor, and the motor is used to drive the roller. The rollers of the magnetic drive trolley 9 in this embodiment are elastic rubber wheels, and the rubber rollers will not damage the surface coating of the piston rod. The magnetic drive trolley 9 and the rotating drive component 8 can share the same power supply, and the power supply can be selected from a mobile power supply or an external power supply system.

[0030] In the embodiment of the present invention, in order to facilitate installation and connection, the upper annular component 6 and the lower annular component 7 in this embodiment are both connected by a plurality of annular sheets, preferably by bolts.

[0031] In some preferred embodiments, Figure 5 As shown, the rotating drive component 8 includes a motor installed on a magnetic drive trolley 9, a driving wheel is installed on the rotating shaft of the motor, and the driving wheel abuts against the lower end surface of the lower end ring component 7. When working, the motor drives the driving wheel to rotate, and the driving wheel drives the lower end ring component 7 to rotate, so that the brush 31 cleans around the piston rod.

[0032] In other preferred embodiments, Figure 6 As shown, the rotating drive component 8 includes a motor installed on a magnetic drive trolley 9, a gear is installed on the rotating shaft of the motor, and the gear is meshed with a driving tooth arranged on the lower section of the lower end ring component 7. This embodiment utilizes gear transmission and a driving tooth is arranged on the lower section of the lower end ring component 7, which makes the drive more reliable.

[0033] The present invention integrates the three functions of cleaning, maintenance and inspection of the piston rod into one device. By adopting the magnetic adsorption method, it can be ensured that the device can move up and down on the piston rod. The device does not require an external power supply and communication transmission line, and is more portable.

[0034] As another preferred embodiment of the present invention, this embodiment provides a hydraulic hoist piston rod maintenance detection method, using a hydraulic hoist piston rod maintenance detection device described in any of the above embodiments, see the attached Figure 1 and attached Figure 4 , specifically including the following steps: S1 connects the magnetic drive trolley 9 to the piston rod by magnetic attraction, assembles the upper annular component 6, the connecting plate 4 and the lower annular component 7 around the piston rod so that the lower annular component 7 is supported on the rotating drive component 8, and then installs the cleaning and oiling device 3, the oil supply device 5 and the high-definition camera 2; S2 starts the rotating driving component 8, so that the cleaning and oiling device 3 rotates one circle to clean the piston rod in the area where the bristles are located. At the same time, the high-definition camera 2 performs a 360-degree inspection of the cleaning part of the piston rod without blind spots. If defects are found, they are transmitted back to the ground control console through image transmission; S3 starts the magnetic attraction driving trolley 9 to move upward or downward again, and starts the rotating driving component 8 again, so that the cleaning and oiling device 3 rotates one circle to clean the piston rod in the area where the bristles are located, until all positions of the piston rod are cleaned; After the detection in step S4 is completed, the device returns to the starting section of the piston rod, replaces the new brush 31, starts the oil supply device 5 so that the brush surface is soaked in oil, and then repeats steps S2-S3 to oil the piston rod surface.

[0035] In some preferred embodiments, the length of the brush 31 is defined as L, the linear speed of the magnetic drive trolley 9 is V, the single oil supply time of the oil supply device 5 is t1, the time for controlling the rotating device 8 to rotate one circle is t2, and the start-up cycle of the rotating drive component 8 is controlled to be T=t1+t2+L / V.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A maintenance and inspection device for the piston rod of a hydraulic hoist, characterized in that: The invention comprises an upper annular component (6) and a lower annular component (7), wherein the upper annular component (6) and the lower annular component (7) are connected via a connecting plate (4), and a cleaning and oiling device (3) is also connected to the connecting plate (4), wherein the cleaning and oiling device (3) is connected to an annular scraper ring (1), and the annular scraper ring (1) is used to clean the oil sludge and ash layer adsorbed on the surface of the piston rod, and two high-definition cameras (2) and an oil supply device (5) are installed on the upper annular component (6), wherein the two high-definition cameras (2) are symmetrically arranged, wherein the high-definition cameras (2) are used to scan coating defects on the surface of the piston rod, and the oil supply device (5) is used to provide oil to the cleaning and oiling device (3); It also includes a magnetic drive trolley (9) and a rotating drive component (8) mounted on the magnetic drive trolley (9), wherein the magnetic drive trolley (9) is used to be magnetically connected to the piston rod and to support the lower end annular component (7) through the rotating drive component (8), and the rotating drive component (8) is used to drive the lower end annular component (7), so that the lower end annular component (7) drives the annular scraper ring (1), the high-definition camera (2) and the cleaning and oiling device (3) to rotate around the piston rod.

2. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 1, characterized in that: The annular scraper ring (1) comprises four annular structures, which are detachably connected, and the four annular structures are connected to form the annular scraper ring (1).

3. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 1, characterized in that: The cleaning and oiling device (3) comprises a support block (32) and a brush (31) detachably arranged on the support block (32); an oil circuit is arranged inside the support block (32) and is connected to the oil supply device (5) via a hose; the oil supply device (5) provides oil so that the brush (31) is soaked in the oil.

4. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 3, characterized in that: The oil supply device (5) comprises a screw motor, an oil storage cylinder and a power supply. The motor is operated so that the oil in the oil storage cylinder is pressed into the cleaning and oiling device (3). The power supply is used to supply power to the high-definition camera and the screw motor.

5. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 1, characterized in that: The rollers of the magnetic drive trolley (9) are all elastic rubber wheels, and the magnetic drive trolley (9) and the rotary drive component (8) share the same power supply.

6. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 1, characterized in that: The upper annular component (6) and the lower annular component (7) are both formed by connecting a plurality of annular sheets.

7. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 1, characterized in that: The rotary drive component (8) comprises a motor mounted on a magnetic drive trolley (9), a drive wheel being mounted on the rotating shaft of the motor, and the drive wheel abutting against the lower end surface of the lower end annular component (7).

8. A maintenance and inspection device for the piston rod of a hydraulic hoist according to claim 1, characterized in that: The rotary drive component (8) comprises a motor mounted on a magnetic drive trolley (9), a gear being mounted on the rotating shaft of the motor, and the gear being meshedly connected with a drive tooth provided on the lower section of the lower end annular component (7).

9. A maintenance and inspection method for the piston rod of a hydraulic hoist, characterized in that: The use of a hydraulic hoist piston rod maintenance and detection device according to any one of claims 1 to 8 specifically comprises the following steps: S1 connects the magnetic drive trolley (9) to the piston rod by magnetic attraction, assembles the upper annular component (6), the connecting plate (4) and the lower annular component (7) around the piston rod so that the lower annular component (7) is supported on the rotating drive component (8), and then installs the cleaning and oiling device (3), the oil supply device (5) and the high-definition camera (2); S2 starts the rotating drive component (8), so that the cleaning and oiling device (3) rotates the shaft one circle to clean the piston rod in the area where the bristles are located. At the same time, the high-definition camera (2) performs a 360-degree inspection of the cleaning part of the piston rod without blind spots. If a defect is found, it is transmitted back to the ground control console via image transmission; S3 starts the magnetic drive trolley (9) again to move upward or downward, and starts the rotary drive component (8) again, so that the cleaning and oiling device (3) rotates the shaft one circle to clean the piston rod in the area where the bristles are located, until all positions of the piston rod are cleaned; After the detection in step S4 is completed, the device returns to the starting section of the piston rod, a new brush (31) is replaced, the oil supply device (5) is started so that the brush surface is soaked in oil, and then steps S2-S3 are repeated to apply oil to the piston rod surface.

10. A method for maintenance and inspection of the piston rod of a hydraulic hoist according to claim 9, characterized in that: The length of the brush (31) is defined as L, the linear speed of the magnetic drive trolley (9) is defined as V, the single oil supply time of the oil supply device (5) is defined as t1, the time for the rotating device (8) to rotate for one cycle is defined as t2, and the start-up cycle of the rotating drive component (8) is defined as T=t1+t2+L / V.

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