Inside-boiler maintenance platform

Abstract

The utility model discloses a boiler inside maintenance platform which comprises winches, the winches are installed on the top of a boiler, each winch comprises a driving motor, a winch part, a traction steel wire and an operation table, a clutch is installed between the driving motor and the winch part, the clutch comprises a driver, and a limiting fluted disc is fixedly installed on the winch part. The limiting fluted disc is provided with a plurality of inner teeth in an annular array, a plurality of limiting swing rods are hinged to the circumference of the capstan portion rotating shaft in an array mode, centrifugal springs are installed between the limiting swing rods and the capstan portion rotating shaft, disengaging switches are installed on the side faces of the inner teeth, when the limiting swing rods swing, the limiting swing rods abut against the sides where the disengaging switches are located, and the disengaging switches are connected to a driver. According to the winch, the limiting swing rod and the disengagement switch are arranged, when the winch breaks down, the limiting swing rod enables the winch part to be braked by being clamped into the inner teeth, the clutch disconnects the drive motor and the winch part through the disengagement switch, and larger loss is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of maintenance platforms and relates to a boiler in-furnace maintenance platform. Background Technology

[0002] A boiler is a device used to generate high-pressure steam. When performing maintenance and repairs on a boiler, it is necessary to enter the boiler through a maintenance platform.

[0003] The boiler in-furnace maintenance platform mainly consists of a winch and an operating platform. The winch lowers the operating platform to the location requiring maintenance, allowing workers to inspect relevant areas inside the furnace. However, lowering the operating platform via the winch poses risks such as winch malfunction, threatening the personal safety of workers. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a boiler in-furnace maintenance platform, which effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A boiler in-furnace maintenance platform, comprising:

[0007] A winch, multiple winches are installed on the top of the boiler, each winch including a drive motor and a winch section, each winch section having a traction steel wire wound around it;

[0008] An operating platform is fixedly connected to the end of the traction steel wire away from the winch.

[0009] A clutch is installed between the drive motor and the winch, the clutch is normally closed, and the clutch includes a driver.

[0010] A limiting toothed disc is fixedly installed on the winch section, and the limiting toothed disc is provided with a plurality of annular arrays of internal teeth;

[0011] A limiting rocker arm is provided, and the rotating shaft of the winch section rotatably passes through the center of the limiting gear disc. A plurality of the limiting rocker arms are circumferentially arranged and hinged to the rotating shaft of the winch section.

[0012] A centrifugal spring is installed between the limiting swing rod and the rotating shaft of the winch section;

[0013] Disengagement switches are provided in multiple manner and are respectively installed on the side of the internal teeth. When the limiting rocker arm swings, it abuts against the side where the disengagement switch is located. The disengagement switch is connected to the driver.

[0014] Optionally, the clutch includes two clutch gears respectively fixedly mounted on the drive motor and slidably mounted on the winch section, the driver is an electric actuator, the driver is fixedly mounted on the winch section, and the output end of the driver is connected to the clutch gear of the winch section through a bearing.

[0015] Optionally, a metering wheel is fixedly installed on the winch section, the traction steel wire passes around the metering wheel, and the metering wheel is connected to a rotation sensor.

[0016] Optionally, the measuring wheel is slidably connected to a clamping wheel, the traction steel wire is located between the measuring wheel and the clamping wheel, and the clamping wheel is threadedly connected to a fixing bolt for fixing the position of the clamping wheel.

[0017] Optionally, the system also includes multiple second winches, each equipped with a safety wire. The second winches are mounted on one side of the winch and are equipped with the limiting toothed disc, the limiting swing rod, and the centrifugal spring. The second winches are connected to the drive motor, and a one-way ratchet is provided between the drive motor and the second winches. The safety wire is connected to the operating table.

[0018] Optionally, a force sensor is installed below the winch, and the force sensor is connected to a buzzer alarm.

[0019] Optionally, the internal teeth are provided with a protrusion at the position of the disengagement switch near the limit lever.

[0020] Compared with the prior art, the present invention has the following advantages: by setting a limit swing rod and a disengagement switch, when the winch malfunctions, the limit swing rod stops the winch section by engaging the internal teeth, thus stopping the fall, and the disengagement switch disconnects the drive motor from the winch section, preventing the malfunctioning but still rotating drive motor from colliding with the stopped winch section and causing greater losses. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the winch part in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the limiting toothed disc part in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the clutch portion according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the metering wheel portion of an embodiment of the present invention.

[0026] Reference numerals: 1. Winch; 11. Drive motor; 12. Winch section; 2. Traction wire; 21. Second winch; 211. Safety wire; 3. Control panel; 4. Clutch; 41. Driver; 42. Clutch gear; 51. Limit gear; 511. Internal gear; 512. Protrusion; 52. Limit lever; 53. Centrifugal spring; 54. Disengagement switch; 55. Measuring wheel; 551. Rotation sensor; 552. Clamping wheel; 533. Fixing bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-4 This is a boiler in-furnace maintenance platform disclosed in an embodiment of this utility model. Please refer to [link / reference]. Figure 1 The system includes multiple winches 1 installed on the top of the boiler. Each winch 1 includes a drive motor 11 and a winch section 12. Each winch section 12 has a traction steel wire 2 wound around it. An operating platform 3 is fixedly connected to the end of the traction steel wire 2 furthest from the winch 1. (See also...) Figure 2 A clutch 4 is installed between the drive motor 11 and the winch section 12. The clutch 4 is normally closed and includes a driver 41. The winch section 12 is fixedly equipped with a limit gear disc 51. Please refer to [link / reference]. Figure 3 The limiting gear disk 51 is provided with multiple annular arrays of internal teeth 511. The rotating shaft of the winch section 12 rotatably passes through the center of the limiting gear disk 51. Multiple limiting swing rods 52 are circumferentially hinged to the rotating shaft of the winch section 12. A centrifugal spring 53 is installed between the limiting swing rods 52 and the rotating shaft of the winch section 12. A disengagement switch 54 is installed on the side of the internal teeth 511. When the limiting swing rods 52 swing, they abut against the side where the disengagement switch 54 is located. The disengagement switch 54 is connected to the driver 41.

[0029] Specifically, a clutch 4 and a limiting gear 51 are installed on the winch 1. The limiting swing rod 52 is connected to the rotating shaft of the winch section 12 and is pulled by a centrifugal spring 53. When the winch 1 malfunctions and the winch section 12 drops rapidly, the centrifugal spring 53 is insufficient to provide the centrifugal force for the limiting swing rod 52, causing the limiting swing rod 52 to swing outward, engage with the internal gear 511, and press the disengagement switch 54. The disengagement switch 54 controls the clutch 4 to disengage.

[0030] In this way, by setting the limit lever 52 and the disengagement switch 54, when the winch 1 malfunctions, the limit lever 52 will stop the winch section 12 by engaging the internal teeth 511, thus stopping its descent. The disengagement switch 54 will also disconnect the drive motor 11 from the winch section 12 by the clutch 4, preventing the malfunctioning but still rotating drive motor 11 from colliding with the stopped winch section 12 and causing greater damage.

[0031] In some feasible embodiments, the drive motor 11 includes a motor and a reducer. For ease of explanation, the winch section 12 includes a mounting bracket and an I-beam. The limiting gear 51 is fixedly mounted on one side of the mounting bracket. The central shaft of the I-beam passes through the limiting gear 51 to mount the limiting swing rod 52. The disconnect switch 54 establishes a connection with the winch 1 controller, so that other winches 1 can brake to a stop synchronously, reducing the possibility of excessive tilting of the operating platform 3.

[0032] In some feasible methods, the internal gear 511 is provided with a protrusion 512 at the position near the limit lever 52 of the disengagement switch 54. After the limit lever 52 is engaged with the internal gear 511, the protrusion 512 restricts the limit lever 52, preventing the centrifugal spring 53 from pulling back the limit lever 52 and causing the winch section 12 to disengage from the braking state.

[0033] As one specific implementation of the boiler in-furnace maintenance platform provided in the application, please refer to Figure 4 The clutch 4 includes two clutch gears 42, which are respectively fixedly mounted on the drive motor 11 and slidably mounted on the winch section 12. The driver 41 is an electric actuator. The driver 41 is fixedly mounted on the winch section 12, and the output end of the driver 41 is connected to the clutch gears 42 of the winch section 12 through a bearing.

[0034] Overall, by setting the electric push rod as the driver 41, when the disconnect switch 54 is triggered, the electric push rod retracts, the two clutch gears 42 disengage from each other, so that the rotation of the drive motor 11 does not affect the braking of the winch section 12.

[0035] In some feasible embodiments, the clutch 4 also includes a sliding shaft, which is slidably keyed to the rotating shaft of the winch section 12. The sliding shaft is fixedly connected to the clutch gear 42, and a first ring is fixedly connected to the sliding shaft. A thrust bearing is mounted on the side of the first ring, and a second ring is provided on the side of the thrust bearing. The second ring is fixedly connected to the output end of the driver 41. When the output end of the driver 41 retracts, the second ring pushes the first ring to slide the sliding shaft, thereby disengaging the clutch gear 42.

[0036] Further, please refer to Figure 2 and Figure 5 The winch section 12 is fixedly equipped with a metering wheel 55, the traction steel wire 2 passes around the metering wheel 55, and the metering wheel 55 is connected to a rotation sensor 551.

[0037] It should be understood that by setting the metering wheel 55, during the downward movement of the traction steel wire 2, the downward movement distance of multiple traction steel wires 2 is perceived, so that the downward movement distance of multiple traction steel wires 2 is consistent, reducing the inconvenience caused by the tilting of the operating table 3.

[0038] In some feasible embodiments, the rotation count sensor 551 can be used as a proximity switch to calculate the rotation count and thus the downward distance of the traction wire 2. The rotation count sensor 551 can be connected to the central control system of the winch 1 to control the speed of the winch 1 when the downward distance is abnormal.

[0039] In some feasible ways, a gyroscope module is set in the center of the operating platform 3 and connected to the central control system of the winch 1, so as to more accurately measure the tilt state of the operating platform 3 in conjunction with the measuring wheel 55.

[0040] Furthermore, the measuring wheel 55 is slidably connected to the clamping wheel 552, the traction steel wire 2 is located between the measuring wheel 55 and the clamping wheel 552, and the clamping wheel 552 is threadedly connected to the fixing bolt 533 for fixing the position of the clamping wheel 552.

[0041] It should be understood that by setting the clamping wheel 552, the friction between the metering wheel 55 and the traction steel wire 2 is increased after clamping, making the metering wheel 55 more accurate in measuring.

[0042] As another specific embodiment of the boiler in-furnace maintenance platform provided in the application, it also includes multiple second winches 21. The second winches 21 are equipped with safety steel wires 211. The second winches 21 are installed on one side of the winch 1. The second winches 21 are equipped with a limit toothed disc 51, a limit swing rod 52 and a centrifugal spring 53. The second winches 21 are connected to the drive motor 11. A one-way ratchet is provided between the drive motor 11 and the second winches 21. The safety steel wires 211 are connected to the operating table 3.

[0043] Based on specific usage scenarios, a second winch 21 is installed so that, in the event of a breakage of the traction steel wire 2, the safety steel wire 211 of the second winch 21 provides tension to the operating platform 3. A one-way ratchet is installed between the drive motor 11 and the second winch 21, ensuring that the second winch 21 is not under tension during the downward movement of the operating platform 3, and is wound up by the drive motor 11 during the upward movement. Furthermore, the second winch 21 remains unaffected if the downward speed of the drive motor 11 becomes abnormal.

[0044] Furthermore, a force sensor is installed below the winch 1, and the force sensor is connected to a buzzer alarm.

[0045] It should be understood that by setting up a force sensor to detect the downward pressure of the winch 1, the breakage of the traction steel wire 2 can be detected and an alarm can be triggered for timely handling.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A boiler in-furnace maintenance platform, characterized in that, include: A winch (1), a plurality of said winches (1) are installed on the top of the boiler, said winch (1) includes a drive motor (11) and a winch section (12), said winch section (12) is wound with traction steel wire (2); The operating platform (3) is fixedly connected to the end of the traction wire (2) away from the winch (1); Clutch (4), the clutch (4) is installed between the drive motor (11) and the winch (12), the clutch (4) is normally closed, and the clutch (4) includes a driver (41); A limiting toothed disc (51) is fixedly installed on the winch section (12). The limiting toothed disc (51) is provided with a plurality of annular arrays of internal teeth (511). The limiting swing rod (52) is rotatably connected to the center of the limiting toothed disc (51) through the rotating shaft of the winch section (12); and a plurality of the limiting swing rods (52) are circumferentially arranged and hinged to the rotating shaft of the winch section (12). Centrifugal spring (53), the centrifugal spring (53) is installed between the limiting swing rod (52) and the rotating shaft of the winch part (12); Disengagement switch (54), multiple disengagement switches (54) are provided and are respectively installed on the side of the internal tooth (511). When the limiting swing rod (52) swings, it abuts against the side where the disengagement switch (54) is located. The disengagement switch (54) is connected to the driver (41).

2. The boiler in-furnace maintenance platform according to claim 1, characterized in that: The clutch (4) includes two clutch gears (42) that are fixedly mounted on the drive motor (11) and slidably mounted on the winch section (12). The driver (41) is an electric actuator. The driver (41) is fixedly mounted on the winch section (12). The output end of the driver (41) is connected to the clutch gear (42) of the winch section (12) through a bearing.

3. The boiler in-furnace maintenance platform according to claim 1, characterized in that: The winch section (12) is fixedly equipped with a measuring wheel (55), the traction steel wire (2) passes around the measuring wheel (55), and the measuring wheel (55) is connected to a rotation sensor (551).

4. The boiler in-furnace maintenance platform according to claim 3, characterized in that: The measuring wheel (55) is slidably connected to a clamping wheel (552), the traction wire (2) is located between the measuring wheel (55) and the clamping wheel (552), and the clamping wheel (552) is threadedly connected to a fixing bolt (533) for fixing the position of the clamping wheel (552).

5. A boiler in-furnace maintenance platform according to claim 1, characterized in that: It also includes multiple second winches (21), each of which is equipped with a safety wire (211). The second winches (21) are installed on one side of the winch (1). The second winches (21) are equipped with the limiting toothed disc (51), the limiting swing rod (52), and the centrifugal spring (53). The second winches (21) are connected to the drive motor (11). A one-way ratchet is provided between the drive motor (11) and the second winches (21). The safety wire (211) is connected to the operating table (3).

6. A boiler in-furnace maintenance platform according to claim 5, characterized in that: A force sensor is installed below the winch (1), and the force sensor is connected to a buzzer alarm.

7. A boiler in-furnace maintenance platform according to any one of claims 1-6, characterized in that: The internal tooth (511) has a protrusion (512) at the position of the disconnect switch (54) near the limit lever (52).

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