Rocking handle applied to telescopic soot blower of thermal power plant

Abstract

The utility model discloses a rocking handle applied to a telescopic soot blower of a thermal power plant, and belongs to the technical field of telescopic soot blower overhauling, the rocking handle comprises a sleeve and a rocking bar which are fixedly connected with a tail shaft of a motor, and the rocking handle further comprises a transmission assembly connected with the sleeve and the rocking bar; the transmission assembly comprises an outer frame and a gear set, wherein the outer frame is arranged at the end, away from the tail shaft of the motor, of the rocker and used for being fixed to a motor shell, and the gear set is rotationally arranged on the outer frame, connected with the sleeve and the rocker and used for transmitting rotation power of the rocker to the sleeve so that the sleeve can rotate by multiple circles. According to the telescopic soot blower rocker applied to the thermal power plant, through transmission of the gear set, multi-circle rotation of the sleeve can be achieved only by rotating the rocker slightly, compared with a traditional mode that the rocker is directly connected to the sleeve, under the same rotating speed, the telescopic soot blower gun barrel can achieve the longer advancing and retreating distance, and the telescopic soot blower gun barrel is more stable. Therefore, the maintenance efficiency is improved, and the working intensity of workers is reduced.

Description

Technical Field

[0001] This application relates to the field of fault diagnosis and repair technology for telescopic sootblowers, specifically a crank handle applied to telescopic sootblowers in thermal power plants. Background Technology

[0002] In thermal power plants, pulverized coal boilers are the main heat energy conversion equipment. During operation, their heating surfaces, such as water-cooled walls, superheaters, and economizers, are prone to ash and slag accumulation. In order to effectively remove the ash and slag accumulation on the heating surfaces and ensure the efficient operation of the boiler, thermal power plants generally use telescopic steam soot blowers for regular purging.

[0003] Because the sootblower barrel needs to frequently extend and retract to contact the heated surface, and due to the high-temperature environment, it often experiences malfunctions such as jamming, failure, and steam leakage. These malfunctions not only prevent the sootblower from working properly and reduce the boiler's cleaning efficiency, but also increase the workload of equipment maintenance and reduce its uptime. Typically, when the sootblower barrel jams, a manual crank is used. The crank's sleeve is fixed to the tail shaft of the sootblower motor, and manual cranking controls the barrel's movement. However, with this manual crank, the sleeve and the connected motor tail shaft only rotate once per revolution, resulting in extremely limited barrel movement. Operators need to expend considerable physical effort and time to rotate the crank to achieve the required barrel movement, leading to low maintenance efficiency and high workload for operators.

[0004] Therefore, this application provides a crank handle for use in telescopic soot blowers in thermal power plants to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a crank handle for a telescopic sootblower in a thermal power plant, aiming to solve the problems mentioned in the background art, such as the low transmission efficiency of existing manual crank handles, which require operators to spend a lot of physical strength and time, resulting in low maintenance efficiency and high workload.

[0006] To achieve the above objectives, this application provides the following technical solution: a crank handle for a telescopic sootblower in a thermal power plant, comprising a sleeve fixedly connected to the tail shaft of a motor and a rocker arm, wherein the crank handle further comprises a transmission assembly connected to the sleeve and the rocker arm;

[0007] The transmission assembly includes an outer frame fixed to the motor housing at the end of the rocker arm away from the motor tail shaft, and a gear set rotatably mounted on the outer frame and connected to the sleeve and rocker arm to transmit the rotational power of the rocker arm to the sleeve, causing the sleeve to rotate multiple times. Through the gear set, the rotational power of the rocker arm is effectively amplified and transmitted to the sleeve, enabling the sleeve to rotate multiple times. Compared to the traditional method of directly connecting the rocker arm to the sleeve, this design greatly improves operational efficiency. At the same rotational speed, this design allows the telescopic sootblower barrel to achieve a longer forward and backward distance, thereby accelerating maintenance efficiency. Simultaneously, due to the transmission effect of the gear set, the operator only needs to rotate the rocker arm slightly to achieve multiple rotations of the sleeve, thus driving the telescopic sootblower barrel to move forward and backward quickly. This not only makes operation more convenient but also reduces the workload of the staff, saving time and effort. The design of the outer frame ensures that the gear set can be installed securely.

[0008] Preferably, in order to facilitate the installation of the gear set, the outer frame has a slot at the position corresponding to the gear set; the design of the slot not only provides sufficient installation and operation space for the gear set, ensuring that the gear set can rotate smoothly and transmit power effectively, but also facilitates later maintenance and repair work.

[0009] Preferably, in order to achieve power transmission, the gear set includes a drive gear rotatably disposed on the outer frame at a position corresponding to the outer side of the slot and fixedly connected to one end of the rocker arm, and a driven gear rotatably disposed in the slot and fixedly connected to the end of the sleeve away from the motor tail shaft. The driven gear meshes with the drive gear. Through the meshing of the driven gear and the drive gear, it can be ensured that the rotational power of the rocker arm is accurately transmitted to the sleeve, thereby driving the telescopic sootblower barrel to perform telescopic operation.

[0010] Preferably, in order to save time and effort, the transmission ratio of the driving gear and the driven gear is N, where N is at least 5. By setting a larger transmission ratio, the sleeve can be driven to rotate more times when the rocker arm rotates fewer times. This not only improves the convenience of operation and reduces the workload of the staff, but also speeds up the extension and retraction of the telescopic sootblower barrel and improves work efficiency.

[0011] Preferably, in order not to affect the rotation of the joystick, the edge of the slot near the drive gear is arc-shaped; the arc-shaped design of the slot edge ensures that the joystick will not be obstructed or rubbed by the edge of the slot during the rotation process and when it approaches the edge of the slot, thus ensuring the smooth operation of the joystick.

[0012] Preferably, to further facilitate the operation of the transmission component, a handle is fixedly installed on the side of the outer frame away from the slot; the handle is designed so that the operator can turn the rocker arm with one hand while holding the handle with the other hand to maintain the stability of the operation, making it easier for the operator to complete the work task.

[0013] The rocker arm of the telescopic sootblower used in thermal power plants is driven by a gear set. The rotational power of the rocker arm is effectively amplified and transmitted to the sleeve, allowing the sleeve to rotate multiple times. Compared with the traditional method of directly connecting the rocker arm to the sleeve, this design greatly improves the operating efficiency. At the same rotational speed, this design enables the telescopic sootblower barrel to achieve a longer forward and backward distance, thereby speeding up maintenance efficiency.

[0014] This product, applied to telescopic sootblowers in thermal power plants, utilizes a gear set for transmission. Operators only need to rotate the rocker arm slightly to achieve multiple rotations of the sleeve, thereby driving the telescopic sootblower barrel to move forward and backward quickly. This not only makes operation more convenient but also reduces the workload of workers, saving time and effort.

[0015] This application in telescopic sootblowers used in thermal power plants provides a stable support point by setting up a handle, enabling two-handed operation and allowing operators to complete various tasks more easily, reducing the physical burden on operators during long-term operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a rocker handle used in a telescopic sootblower in a thermal power plant, as shown in Example 1.

[0017] Figure 2 This is a schematic diagram of the transmission assembly in Example 1;

[0018] Figure 3 This is a schematic diagram of the gear set in Example 1;

[0019] Figure 4 This is a schematic diagram of the handle of a telescopic sootblower used in a thermal power plant, as shown in Example 2.

[0020] In the picture:

[0021] 1. Sleeve;

[0022] 2. Joystick;

[0023] 3. Transmission assembly; 31. Outer frame; 311. Groove; 312. Handle; 32. Gear set; 321. Driving gear; 322. Driven gear. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Example 1

[0026] This embodiment provides a crank handle for use in telescopic soot blowers in thermal power plants, such as... Figures 1-3 As shown, the rocker includes a sleeve 1 fixedly connected to the tail shaft of the motor and a rocker arm 2. The rocker also includes a transmission assembly 3 connected to the sleeve 1 and the rocker arm 2. The transmission assembly 3 includes an outer frame 31 disposed at the end of the rocker arm 2 away from the tail shaft of the motor for fixing to the motor housing, and a gear set 32 ​​rotatably disposed on the outer frame 31 and connected to the sleeve 1 and the rocker arm 2 for transmitting the rotational power of the rocker arm 2 to the sleeve 1, so that the sleeve 1 rotates multiple times.

[0027] When the telescopic sootblower barrel gets stuck, the operator can manually rotate the rocker arm 2. The rotational power of the rocker arm 2 is then transmitted through the gear set 32 ​​in the transmission assembly 3. When the rocker arm 2 is rotated one revolution, the sleeve 1 connected to the tail shaft of the motor will rotate multiple revolutions through the power transmission of the gear set 32. Thus, the operator only needs to rotate the rocker arm 2 a few revolutions to make the sleeve 1 drive the tail shaft of the motor to rotate multiple revolutions, thereby speeding up the extension and retraction of the telescopic sootblower barrel, improving maintenance efficiency, reducing the workload of the staff, and saving time and effort.

[0028] In order to facilitate the installation of the gear set 32, the outer frame 31 is provided with a slot 311 at the position corresponding to the gear set 32. The design of the slot 311 not only provides sufficient installation and operation space for the gear set 32, ensuring that the gear set 32 ​​can rotate smoothly and transmit power effectively, but also facilitates later maintenance and repair work.

[0029] Specifically, the gear set 32 ​​includes a drive gear 321 rotatably disposed on the outer frame 31 at the position corresponding to the outer side of the slot 311 and fixedly connected to one end of the rocker arm 2, and a driven gear 322 rotatably disposed in the slot 311 and fixedly connected to the end of the sleeve 1 away from the tail shaft of the motor. The driven gear 322 meshes with the drive gear 321.

[0030] It should be noted that the driving gear 321 and the driven gear 322 are rotatably connected to the outer frame 31 and the slot 311 respectively via ball bearings. The outer ring of the ball bearing on the driving gear 321 is fixedly connected to the inner ring of the driving gear 321, and the inner ring of the ball bearing is fixedly connected to the driving shaft, which is rotatably connected to the outer frame 31. The outer ring of the ball bearing on the driven gear 322 is fixedly connected to the inner ring of the driven gear 322, and the inner ring of the ball bearing is fixedly connected to the driven shaft, which is rotatably connected to the slot 311.

[0031] In addition, to save time and effort, the transmission ratio of the driving gear 321 and the driven gear 322 is 1:N, where N is at least 5. By setting a larger transmission ratio, the rocker arm 2 can drive the sleeve 1 to rotate more times with fewer rotations. This not only improves the convenience of operation and reduces the workload of the staff, but also speeds up the extension and retraction of the telescopic sootblower barrel and improves work efficiency.

[0032] When the operator rotates the rocker arm 2, the rocker arm 2 drives the drive gear 321, which is fixedly connected to it, to rotate on the outer frame 31. Since the drive gear 321 is rotatably connected to the outer frame 31 through ball bearings, the rotation process is smooth and the frictional resistance is small. Furthermore, since the rotation of the drive gear 321 is transmitted to the driven gear 322 through meshing, and the driven gear 322 is also rotatably connected in the slot 311 through ball bearings, the rotation efficiency can be ensured. Then, the rotation of the driven gear 322 will drive the rocker arm 2 connected to it to rotate. In this way, the rotational power of the rocker arm 2 is transmitted to the sleeve 1. Immediately afterwards, the rotation of the sleeve 1 will drive the tail shaft of the motor to rotate. The movement drives the telescopic sootblower barrel to extend and retract from the pulverized coal furnace. During this process, since the transmission ratio of the driving gear 321 and the driven gear 322 is set to 1:N, and N is at least 5, the sleeve 1 will rotate N times for every rotation of the rocker arm 2. Thus, the operator only needs to turn the rocker arm 2 a few times to make the sleeve 1 drive the tail shaft of the motor to rotate many times, thereby speeding up the extension and retraction of the telescopic sootblower barrel and improving work efficiency. At the same time, due to the existence of the transmission ratio, the operator does not need to turn the rocker arm 2 for a long time to achieve the required extension and retraction movement, which reduces the workload of the operator and makes it easier for them to complete their work tasks.

[0033] Understandably, in order not to affect the rotation of the joystick 2, the edge of the slot 311 near the drive gear 321 is arc-shaped. The arc-shaped design of the edge of the slot 311 ensures that the joystick 2 will not be obstructed or rubbed by the edge of the slot 311 during the rotation process and when it approaches the edge of the slot 311, thus ensuring the smooth operation of the joystick 2.

[0034] Example 2

[0035] Unlike Example 1, as Figure 4 As shown, in order to further facilitate the operation of the transmission component 3, a handle 312 is fixedly installed on the side of the outer frame 31 away from the slot 311. When the operator needs to operate the crank 2, they can operate the crank 2 with one hand and hold the handle 312 with the other hand. This holding action can provide a stable support point for operating the crank 2, making it easier for the operator to cope with long-term operation tasks.

[0036] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A crank handle for a telescopic sootblower in a thermal power plant, comprising a sleeve (1) fixedly connected to the tail shaft of a motor and a crank (2), characterized in that: The crank also includes a transmission assembly (3) connected to the sleeve (1) and the rocker arm (2). The transmission assembly (3) includes an outer frame (31) disposed at the end of the rocker arm (2) away from the tail shaft of the motor for fixing to the motor housing, and a gear set (32) rotatably disposed on the outer frame (31) and connected to the sleeve (1) and the rocker arm (2) for transmitting the rotational power of the rocker arm (2) to the sleeve (1) so that the sleeve (1) rotates multiple times.

2. The crank handle for a telescopic sootblower in a thermal power plant according to claim 1, characterized in that: The outer frame (31) has a slot (311) at the position corresponding to the gear set (32).

3. The crank handle for a telescopic sootblower in a thermal power plant according to claim 2, characterized in that: The gear set (32) includes a drive gear (321) rotatably disposed on the outer frame (31) at a position corresponding to the outer side of the slot (311) and fixedly connected to one end of the rocker arm (2), and a driven gear (322) rotatably disposed in the slot (311) and fixedly connected to one end of the sleeve (1) away from the tail shaft of the motor. The driven gear (322) meshes with the drive gear (321).

4. The crank handle for a telescopic sootblower in a thermal power plant according to claim 3, characterized in that: The transmission ratio of the driving gear (321) and the driven gear (322) is 1:N, where N is at least 5.

5. The crank handle for a telescopic sootblower in a thermal power plant according to claim 3, characterized in that: The groove (311) has an arc-shaped edge on the side near the drive gear (321).

6. The crank handle for a telescopic sootblower in a thermal power plant according to claim 2, characterized in that: A handle (312) is fixedly installed on the side of the outer frame (31) away from the slot (311).

Images