Hoisting device for fixing boiler tube screen

Abstract

The utility model discloses a hoisting device for fixing a boiler tube panel. According to the technical scheme, the hoisting device is characterized by comprising a track beam, a pulley assembly, a winch and a hook assembly which are arranged in a boiler furnace. A V-shaped rail groove with an opening in the bottom is formed in the rail beam, a pair of inclined contact faces are arranged on the inner wall of the groove, and the idler wheels are in rolling fit with the contact faces to guarantee stable operation. By arranging the cleaning assembly, the airflow nozzle can regularly clean dust and impurities in the track groove, cleanliness of the contact face is guaranteed, and therefore friction force and roller abrasion are reduced. The driving system adopts a motor, a driving shaft and a universal joint for transmission, so that stable power transmission is ensured. The limiting strips are clamped with the ring grooves of the rollers, so that the rollers are prevented from deviating, and the stability and accurate hoisting of equipment are ensured. The device has the advantages of being clean, stable and low in abrasion, the efficiency of hoisting operation is remarkably improved, and the service life of equipment is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler hoisting equipment, specifically to a hoisting device for fixing boiler tube panels. Background Technology

[0002] A boiler tube panel is a screen-like heating surface arranged in the furnace, usually located inside the boiler furnace, closely arranged around the furnace perimeter or top. It consists of multiple tubes arranged closely together, which can be straight, curved, or spiral, depending on the boiler's design and operating requirements.

[0003] Currently, boiler tube panels often require hoisting equipment to lift them into position during installation. Workers then fix and weld the tube panels, or, in boiler maintenance rooms, the hoisting equipment is used to lift and remove tube panels that need replacement. Current hoisting equipment structures, as disclosed in patent number (CN202322217833.0), entitled "Hoisting Tool for Internal Tube Panels of Tower Boilers," utilize a track beam installed inside the furnace and an electric roller trolley system mounted on the track beam to achieve horizontal movement and lifting of the boiler tube panels. Specifically, the track beam is fixedly installed at the top of the furnace to support the roller trolley and other hoisting components. The roller trolley consists of driving rollers, driven rollers, and guide wheels. A motor drives the driving rollers to roll horizontally on the track beam, thus achieving translational movement during hoisting. Simultaneously, the hoisting component's winch rope is guided by the guide wheels and works in conjunction with the hook assembly to complete the lifting and lowering of the tube panels.

[0004] However, in the aforementioned patent, since the track beam is located inside the boiler, dust and impurities generated during boiler operation accumulate on the contact surface between the roller and the track beam, thereby increasing the friction between them. This makes the relative movement between the roller and the track beam difficult, resulting in uneven roller sliding and reducing the lifting and moving effect on the tube panel. At the same time, the dust and impurities cause unevenness on the surface of the track beam, affecting the stability of the tube panel lifting during roller movement and also accelerating wear on the roller, reducing its service life. Utility Model Content

[0005] This utility model proposes a hoisting device for fixing boiler tube panels, which solves the problem in related technologies where dust and impurities accumulate on the track beam, affecting the sliding between the rollers and the track beam.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hoisting device for fixing boiler tube panels, comprising a track beam disposed within the external boiler furnace and a hoisting assembly. The hoisting assembly includes a trolley assembly slidably disposed on the track beam, and a guide wheel assembly fixedly disposed on the trolley assembly; it also includes a winch disposed on the track beam, the winch being connected to a hook assembly via a rope wound around the guide wheel assembly; the track beam is provided with a V-shaped track groove with an open bottom, the inner wall of the track groove being provided with a pair of symmetrically arranged and inclined contact surfaces; the trolley assembly includes a mounting base disposed within the track groove, the mounting base being rotatably disposed with a pair of rotating shafts parallel to the pair of contact surfaces and a driving component for driving the pair of rotating shafts to rotate, the rotating shafts being fixedly connected with rollers that roll in cooperation with the contact surfaces, the rollers being perpendicular to the contact surfaces and their outer circumferences fitting against the contact surfaces; it also includes a cleaning assembly disposed on the track beam, the cleaning assembly being used to clean the contact surfaces.

[0007] The present invention is further configured such that the driving component includes a driving motor mounted on a mounting base and a driving shaft rotatably mounted on the mounting base and connected to the output shaft of the driving motor. The driving shaft is connected to one end of the rotating shaft through a universal joint fixedly mounted on the mounting base.

[0008] The present invention is further configured such that a support plate with a vertical rotating shaft is fixedly provided on the mounting base, and an abutment hole sleeved on the circumference of the rotating shaft is provided at one end of the support plate near the rotating shaft, and the connecting hole and the rotating shaft rotate relative to each other through a bearing.

[0009] The present invention is further configured such that the cleaning device includes a plurality of airflow nozzles disposed in the track groove and symmetrically disposed on the top edge of a pair of contact surfaces, the plurality of airflow nozzles being spaced apart along the length direction of the track groove, and the plurality of airflow nozzles being connected to an air source through an air pipe, the air source being used to make the airflow nozzles spray airflow parallel to the contact surface to clean the contact surface.

[0010] The present invention is further configured such that a limiting strip is provided on the contact surface in a protrusion along the length direction of the track groove, the limiting strip corresponds to the position of the roller, and an annular groove is provided on the periphery of the roller to engage with the limiting strip.

[0011] The present invention is further configured such that the mounting base includes a pair of side plates corresponding to the contact surface and a base plate connected between the side plates, the driving component is disposed on the base plate, the rotating shaft is disposed on the side plate, and the pair of side plates are connected by a plurality of double-headed screws.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] Compared to existing technologies, the combination of V-shaped track grooves and inclined contact surfaces optimizes the fit between the rollers and the track. The V-shaped track grooves prevent large particles of impurities from accumulating between the rollers and the track grooves, thus avoiding dust buildup that could affect the stable operation of the rollers. Simultaneously, the V-shaped track grooves guide the rollers to run stably within the track, while the inclined angle of the contact surface ensures that the rollers always maintain good contact with the track beam, effectively reducing friction caused by uneven stress. The fit between the rollers and the contact surface further ensures the smoothness of the rollers during operation, reducing slippage caused by poor contact. Furthermore, the ring groove engagement design between the limiting strip and the roller further prevents roller misalignment, ensuring that it remains centered in the track groove, enhancing the stability of the pipe panel during hoisting and avoiding operational errors caused by roller slippage.

[0014] Meanwhile, a cleaning component has been introduced. Through airflow nozzles installed within the track groove, dust and impurities on the contact surfaces are periodically removed, keeping both the track groove and the contact surfaces clean. This design effectively reduces the accumulation of dust and impurities, preventing them from hindering the movement of the rollers, reducing increased friction and roller wear caused by dust accumulation, and ensuring the high efficiency of the equipment after long-term operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0016] Figure 2 This is an internal structure diagram of this embodiment.

[0017] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0018] Figure 4 This is a cross-sectional view of this embodiment.

[0019] Reference numerals: 1. Track beam; 2. Lifting assembly; 21. Trolley assembly; 210. Mounting base; 211. Shaft; 212. Roller; 22. Guide wheel assembly; 23. Winch; 24. Rope; 25. Hook assembly; 3. Track groove; 31. Contact surface; 4. Cleaning assembly; 41. Airflow nozzle; 42. Air pipe; 5. Drive motor; 6. Drive shaft; 7. Universal joint; 8. Support plate; 9. Limiting strip; 10. Annular groove; 11. Double-ended screw. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of this utility model.

[0021] like Figure 1-4 As shown, this embodiment discloses a hoisting device for fixing boiler tube panels, including a track beam 1 installed inside the external boiler furnace and a hoisting assembly 2. The hoisting assembly 2 includes a trolley assembly 21 slidably installed on the track beam 1, with a guide wheel assembly 22 fixedly installed on the trolley assembly 21; it also includes a winch 23 installed on the track beam 1, with a hook assembly 25 connected to the winch 23 via a rope 24 wound around the guide wheel assembly 22; when starting the hoisting operation, the equipment is first started, and after the equipment is started, the operator first... The controller controls the winch 23 to release the cable. When the winch 23 releases the cable, it releases the rope 24. The rope 24 descends under the weight of the hook assembly 25 and the guide wheel assembly 22, allowing the operator to connect the tube screen to the hook assembly 25. Then, the winch is controlled to wind up the rope 24. As the rope 24 winds up, it drives the hook assembly 25 to rise, thereby controlling the tube screen to rise and achieving the hoisting of the tube screen. When it is necessary to adjust the position of the tube screen, the position of the tube screen is adjusted by controlling the movement of the trolley assembly 21.

[0022] like Figure 2As shown, the track beam 1 serves as the main support structure installed at the top of the boiler furnace. A V-shaped track groove 3 with an open bottom is provided on the track beam 1. A pair of symmetrically arranged and inclined contact surfaces 31 are provided on the inner wall of the track groove 3. The trolley assembly 21 includes a mounting base 210 disposed within the track groove 3. A pair of rotating shafts 211 parallel to the contact surfaces 31 are rotatably mounted on the mounting base 210, along with a driving component that drives the rotating shafts 211 to rotate. Rollers 212 that roll in cooperation with the contact surfaces 31 are fixedly connected to the rotating shafts 211 of the driving component. The rollers 212 are perpendicular to the contact surfaces 31, and their outer circumferences are in contact with the contact surfaces 31. The contact surfaces 31 and the trolley assembly 21... The rollers 212 are in contact with each other to achieve smooth rolling. Through the U-shaped track groove 3 and the inclined contact surface 31, during the daily use of the boiler, impurities attached to the contact surface 31 can slide out of the track groove 3 through the opening along the inclined contact surface 31, thereby reducing the excessive accumulation of dust and impurities on the surface of the track groove 3. At the same time, the rollers 212 in the trolley assembly 21 are perpendicular to the contact surface 31 by the rotating shafts 211 set on both sides of the mounting base 210 and parallel to the contact surface 31 of the track groove 3, so that the outer circumference of the rollers 212 is completely in contact with the contact surface 31, ensuring the smooth movement of the trolley assembly 21.

[0023] Meanwhile, the V-shaped track groove 3 can guide the roller 212 to move smoothly along the center of the track groove 3, avoiding the offset problem caused by uneven width of the track groove 3 or installation error, thereby reducing the shaking of the tube screen during the movement and improving the stability of the tube screen movement.

[0024] And, as Figure 2 As shown, in order to further improve the cleaning of the track groove 3 and ensure that the hoisting device can stably lift and move the tube screen during the subsequent disassembly and maintenance process, a cleaning component 4 is provided on the track beam 1. The cleaning component 4 includes a plurality of airflow nozzles 41 disposed in the track groove 3 and symmetrically arranged on the top edge of a pair of contact surfaces 31. The plurality of airflow nozzles 41 are spaced apart along the length direction of the track groove 3. The plurality of airflow nozzles 41 are connected to an air source through an air pipe 42. The air source is used to make the airflow nozzles 41 spray airflow parallel to the contact surface 31 to clean the contact surface 31.

[0025] The air source is an air pump, which is connected to a controller. Before starting the hoisting device, the operator starts the air pump through the controller. The air pump pumps air into the airflow nozzle 41 through the air pipe 42, so that the airflow nozzle 41 blows air onto the contact surface 31 in the track groove 3, allowing the impurities and dust attached to the contact surface 31 to be blown out of the opening. The air nozzles are distributed on both sides of the track groove 3 and face the opening. Therefore, when the airflow nozzle 41 blows air, the airflow on both sides will contact above the opening, thereby counteracting the force of the airflow and preventing dust and impurities on one side from being blown to the other side, thus cleaning the contact surface 31 and ensuring that the roller 212 can roll smoothly. At the same time, in order to prevent impurities and dust from accumulating and solidifying on the contact surface 31 of the track groove 3 for a long time, the air pump can be turned on periodically to clean the contact surface 31 regularly.

[0026] like Figure 2 As shown, the driving component includes a drive motor 5 mounted on a mounting base 210 and a drive shaft 6 rotatably mounted on the mounting base 210 and connected to the output shaft of the drive motor 5. The drive shaft 6 is connected to one end of the rotating shaft 211 via a universal joint 7 fixedly mounted on the mounting base 210. Two drive shafts are provided, which can be connected and transmitted to the output shaft of the drive motor 5 via a chain and sprocket. By fixing sprockets on the drive shaft 6 and the output shaft of the drive motor 5, and transmitting them through a chain, the two drive shafts 6 can rotate synchronously in the same direction, thereby driving the movement of the rear assembly. The drive shaft 6 and the rotating shaft 211 are linked by the universal joint 7. The universal joint 7 is an existing product that can transmit the torque of the drive shaft 6 to the rotating shaft 211, thereby enabling the tilted rotating shaft 211 to rotate stably.

[0027] like Figure 3 As shown, a support plate 8 with a vertical rotating shaft 211 is fixedly installed on the mounting base 210. The end of the support plate 8 near the rotating shaft 211 is provided with an abutment hole that fits around the rotating shaft 211. The connecting hole and the rotating shaft 211 rotate relative to each other through a bearing. The support plate 8 can form a triangular structure between the side plate of the mounting base 210, the rotating shaft 211, and the rotating shaft 211. The support plate 8 is perpendicular to the rotating shaft 211, which can distribute the force on the roller 212 to the mounting base 210, thereby reducing the force on the rotating shaft 211 and preventing damage to the rotating shaft 211 and the roller 212.

[0028] like Figure 2 , 4 As shown, a limiting strip 9 is provided on the contact surface 31 along the length of the track groove 3. The limiting strip 9 corresponds to the position of the roller 212. The roller 212 is provided with an annular groove 10 that engages with the limiting strip 9.

[0029] The engagement between the limiting strip 9 and the locking ring groove 10 of the roller 212 effectively limits the range of motion of the roller 212, preventing the roller 212 from shifting or derailing within the track groove 3. The design of the limiting strip 9 ensures that the roller 212 always maintains the correct trajectory within the track groove 3, increasing the accuracy and stability of the hoisting operation.

[0030] like Figure 4 As shown, the mounting base 210 includes a pair of side plates corresponding to the contact surface 31 and a base plate connected between the side plates. The driving component is disposed on the base plate, and the rotating shaft 211 is disposed on the side plate. The pair of side plates are connected by a number of double-headed screws 11.

[0031] During hoisting, the equipment needs to withstand a significant load. The double-headed screw 11 connection design effectively enhances the stability of the mounting base 210, preventing structural deformation or loosening due to the load. This design improves the overall structural durability and load-bearing capacity, ensuring the long-term reliability of the equipment.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hoisting device for boiler tube panel fixation, comprising a track beam (1) arranged in an external boiler furnace and a hoisting assembly (2), the hoisting assembly (2) comprising a trolley assembly (21) slidingly arranged on the track beam (1), a guide wheel assembly (22) fixedly arranged on the trolley assembly (21); further comprising a winch (23) arranged on the track beam (1), the winch (23) being connected with a hook assembly (25) through a running rope (24) arranged on the guide wheel assembly (22); characterized in that, The track beam (1) is provided with a V-shaped and bottom-opened track groove (3), the inner wall of the track groove (3) is provided with a pair of symmetrical and inclined contact surfaces (31), the trolley assembly (21) comprises a mounting seat (210) arranged in the track groove (3), a pair of rotating shafts (211) arranged in parallel with the pair of contact surfaces (31) are arranged on the mounting seat (210) in a rotating mode, a driving member for driving the pair of rotating shafts (211) to rotate, the rotating shaft (211) is fixedly connected with a roller (212) in rolling fit with the contact surface (31), the roller (212) is perpendicular to the contact surface (31) and the circumferential outer side of the roller (212) is attached to the contact surface (31); the cleaning assembly (4) arranged on the track beam (1) is further included, and the cleaning assembly (4) is used for cleaning the contact surface (31).

2. A hoisting device for boiler tube panel fixation according to claim 1, characterized in that, The driving member comprises a driving motor (5) arranged on the mounting seat (210) and a driving shaft (6) arranged on the mounting seat (210) in a rotating mode and connected with the output shaft of the driving motor (5), and the driving shaft (6) is connected with one end of the rotating shaft (211) through the universal joint (7) fixedly arranged on the mounting seat (210).

3. A hoisting device for boiler tube panel fixation according to claim 2, characterized in that, The mounting seat (210) is fixedly provided with a support plate (8) perpendicular to the rotating shaft (211), one end of the support plate (8) close to the rotating shaft (211) is provided with an abutting hole sleeved on the circumferential side of the rotating shaft (211), and the connecting hole is relatively rotatable through the bearing with the rotating shaft (211).

4. The hoisting device for boiler tube panel fixation according to any one of claims 1, 3, characterized in that, The cleaning device comprises a plurality of airflow nozzles (41) arranged in the track groove (3) and symmetrically arranged on the top edges of the pair of contact surfaces (31), the plurality of airflow nozzles (41) are distributed at intervals along the length direction of the track groove (3), the plurality of airflow nozzles (41) are connected with an air source through an air pipe (42), and the air source is used for making the airflow nozzles (41) spray airflow parallel to the contact surface (31) to clean the contact surface (31).

5. A hoisting device for boiler tube panel securement according to claim 4, wherein, The contact surface (31) is provided with a limiting strip (9) arranged along the length direction of the track groove (3) in a protruding mode, the limiting strip (9) corresponds to the position of the roller (212), and the circumferential side of the roller (212) is provided with a ring groove (10) clamped with the limiting strip (9).

6. The hoisting device for boiler tube panel securement of claim 1, wherein, The mounting seat (210) comprises a pair of side plates corresponding to the contact surface (31) and a bottom plate connected between the side plates, the driving member is arranged on the bottom plate, the rotating shaft (211) is arranged on the side plate, and a pair of side plates are connected through a plurality of double-headed screws (11).

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