Boiler hanging device

Abstract

The invention discloses a boiler hanging device, and relates to the field of boiler hanging. Comprising a walking chassis mechanism, a supporting frame fixed above the walking chassis mechanism and an extension arm extending out of the upper end of the supporting frame. A plurality of groups of winches are mounted on the extension arm, slings on the winches penetrate through the pulley block to be connected with a clamping assembly, and the outer side of the boiler body is wrapped with the clamping assembly through steel cables; the clamping assembly comprises a clamping base at the bottom, a shaft rod installed in the clamping base and a driven assembly installed above the shaft rod. The clamping assembly adopts a unique eccentric disc and driven assembly structure, a shaft rod is driven by a driving motor to rotate, so that a clamping pad is tightly attached to the outer side of the boiler body, a steel rope is wound by a steel rope winding disc to form an enclosure structure to clamp the boiler, the boiler is effectively prevented from shaking or sliding off in the hoisting process, and the hoisting safety is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of boiler hanging, in particular to a boiler hanging device. Background Art

[0002] In the field of industrial production, boilers are important energy conversion equipment, and lifting operations are often required during their installation, maintenance and replacement. There are many problems with traditional boiler lifting methods. For example, the stability of the lifting equipment is poor, and it is easy to shake due to unstable center of gravity or external interference during the lifting process, which will not only damage the boiler itself, but also endanger the safety of on-site workers. Moreover, the clamping structure of traditional lifting equipment is often not flexible and stable enough, and it is difficult to adapt to boilers of different sizes and shapes, which makes the boiler easy to slip during the lifting process. In addition, the power system of the lifting equipment lacks precise control and overload protection mechanism, and cannot adjust the lifting power according to the actual lifting needs. When the lifting weight exceeds the carrying capacity of the equipment, it is easy to cause equipment failure or even safety accidents. Furthermore, key components such as pulleys in the lifting process are prone to wear, and there is a lack of effective cleaning and maintenance methods, which will affect the smoothness and efficiency of the lifting, and increase the equipment maintenance cost and downtime. Summary of the invention

[0003] The object of the present invention is to provide a boiler hanging device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a boiler hanging device, comprising a traveling chassis mechanism, a support frame fixed above the traveling chassis mechanism, and an extension arm extending from the upper end of the support frame; multiple groups of winches are installed on the extension arm, and the hoisting rope on the winch passes through the pulley block to connect the clamping assembly, and the clamping assembly is wrapped around the outer side of the boiler body through a steel cable; The clamping assembly includes a clamping seat at the bottom, a shaft installed inside the clamping seat, and a driven assembly installed above the shaft, one end of the shaft extends out of the side of the clamping seat to connect to the drive motor, and an eccentric gear and two sets of eccentric disks are installed on the shaft, and a wire rope winding disk is installed on the shaft, an eccentric gear is installed on the driven assembly, and two sets of eccentric disks are installed on the driven assembly, the driven assembly is installed on a moving block on the side of the clamping seat, a top plate is fixed on the top of the moving block, and a clamping pad is installed on the side of the top plate.

[0005] Furthermore, the side plates of the clamping seat are respectively provided with pin rod holes and tow rope holes, and connecting pieces are installed on the pin rod holes on the clamping seat, and the connecting pieces span across both sides of the clamping seat. At the same time, the tow ropes are connected to the tow rope holes through the connecting pieces installed, and the tow ropes installed on the tow rope holes are supported on the bottom of the boiler body.

[0006] Furthermore, the connecting member includes a support with a pulley installed on the upper end and a U-shaped support at the lower end, and the through hole and the support cable hole on the U-shaped support are coaxially connected through a pin rod.

[0007] Furthermore, the inner side of the clamping pad is an arc-shaped surface, and a hook groove structure is opened on the arc-shaped surface. At the same time, the driving motor drives the shaft to rotate, and then the eccentric disk on the shaft cooperates with the eccentric disk of the driven component to push the clamping pad up and down.

[0008] Furthermore, at least four groups of clamping assemblies are arranged around the boiler body below the pulley block, and the steel cables connected to the four groups of clamping assemblies form an enclosure structure. The clamping assemblies are wound around the steel cables to contract and clamp the boiler body, and at least two groups of clamping assemblies are wound around supporting cables.

[0009] Furthermore, the walking chassis mechanism includes a chassis frame supported at the upper end, a spherical slider is fixed on the side of the chassis frame, and a lifting support leg is installed on the chassis frame outside the spherical slider, and at the same time, the lower end of the spherical slider is slidably installed on the track, and the track is fixed on the base, and a hydraulic cylinder is installed on the base through a support, and the front end of the hydraulic cylinder is connected to the chassis frame through a universal seat, and the operation of the hydraulic cylinder pushes the chassis frame to slide along the direction of the track.

[0010] Furthermore, the winch on the extended arm is adjustable and can change its lifting power according to the weight of the boiler body and the lifting requirements, and the winch is provided with an overload protection device. When the pulling force during the lifting process exceeds a preset value, the lifting is automatically stopped and an alarm signal is issued. The overload protection device includes a tension sensor and a controller connected thereto. The tension sensor is used to monitor the lifting tension in real time, and the controller controls the operation of the winch according to the signal of the tension sensor.

[0011] Furthermore, the pulley block includes a fixed pulley and a movable pulley, and the wheel grooves of the fixed pulley and the movable pulley are provided with a wear-resistant coating, and the wear-resistant coating is made of nano-ceramic material, which greatly improves the wear resistance and service life of the pulley. At the same time, the pulley block is provided with a pulley cleaning device, and the pulley cleaning device includes a cleaning brush and an air blowing nozzle. During the rotation of the pulley, the cleaning brush can automatically remove debris in the wheel groove, and the air blowing nozzle can blow away dust, thereby ensuring the smooth operation of the pulley block and avoiding the accumulation of debris or dust affecting the safety and efficiency of lifting.

[0012] Furthermore, the clamping seat is made of high-strength aluminum alloy, which reduces the overall weight while ensuring sufficient strength, and the surface of the clamping seat is coated with a high-temperature resistant and corrosion-resistant ceramic coating. The slings, steel cables and support cables are all high-strength and corrosion-resistant steel wire ropes, and their surfaces are coated with a layer of anti-corrosion grease and a layer of wear-resistant plastic film.

[0013] Furthermore, the hanging method of the hanging device comprises the following steps: First, move the traveling chassis mechanism to the predetermined position close to the boiler body, and adjust the height of the chassis frame by lifting the supporting legs, so that the pulley block on the extension arm and the lifting point of the boiler body are roughly at the same height, and at the same time ensure that the spherical slider is in a stable state on the track; Next, four sets of clamping assemblies are placed at corresponding positions around the boiler body, so that the steel cable can surround the boiler body, and the tow cable is passed through the tow cable hole on the clamping seat, and the tow cable is connected with a connecting piece so that it is supported on the bottom of the boiler body; Then, the driving motor is started to drive the shaft to rotate, and the eccentric disk on the shaft cooperates with the eccentric disk of the driven assembly to push the moving block to drive the top plate and the clamping pad to rise, and the inverted hook groove structure on the inner arc surface of the clamping pad is closely attached to the outer side of the boiler body. At the same time, the wire rope winding disk starts to wind the wire rope, so that the wire rope forms an enclosed structure and gradually shrinks to clamp the boiler body. Afterwards, according to the weight of the boiler body and the lifting requirements, the lifting power of the winch is set on the controller, and the winch is started. The sling lifts the boiler body through the pulley block. During the lifting process, the tension sensor monitors the lifting tension in real time and transmits the signal to the controller. If the tension exceeds the preset value, the controller controls the winch to automatically stop lifting and issue an alarm signal. Finally, after the lifting is completed, place the boiler body in the designated position, and reverse the above steps. First, loosen the clamping assembly on the boiler body, and then slowly lower the boiler body to complete the entire hanging process. During the entire process, the pulley cleaning device continues to work, the cleaning brush removes debris in the wheel groove, and the air nozzle blows away dust to ensure smooth operation of the pulley block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The boiler hanging device of the present invention cooperates with the track through the spherical slider on the walking chassis mechanism, and the hydraulic cylinder drives the chassis frame to slide and the lifting support legs to adjust the height. The device can be accurately adjusted to a suitable position before lifting, ensuring the stability of the device during the lifting process.

[0015] The clamping assembly adopts a unique eccentric disc and driven assembly structure. The driving motor drives the shaft to rotate, so that the clamping pad fits tightly against the outside of the boiler body, and the steel cable winding disc wraps the steel cable to form an enclosure structure to clamp the boiler, effectively preventing the boiler from shaking or slipping during lifting, greatly improving the safety of lifting.

[0016] The inner side of the clamping pad of the clamping assembly is provided with an arc surface and an undercut groove structure, which can better adapt to boiler bodies of different shapes and sizes, increase the contact friction with the boiler, and ensure the reliability of clamping.

[0017] The position and clamping degree of the clamping assembly can be flexibly adjusted according to the actual situation of the boiler body, and is suitable for various types of boiler lifting work.

[0018] The winch on the extended arm is adjustable, which can accurately change the lifting power according to the weight of the boiler body and lifting requirements, improving the efficiency and accuracy of lifting.

[0019] The overload protection device on the winch monitors the lifting force in real time through the tension sensor. When the tension exceeds the preset value, the controller automatically controls the winch to stop lifting and sends out an alarm signal, effectively protecting the lifting equipment and the boiler body, and avoiding equipment damage and safety accidents caused by overload.

[0020] The fixed pulley and movable pulley in the pulley block are provided with a wear-resistant coating in the wheel grooves, which is made of nano-ceramic material, greatly improving the wear resistance of the pulley and reducing the equipment failure and replacement frequency caused by pulley wear.

[0021] The pulley cleaning device can promptly remove debris and dust from the wheel groove, ensuring the smooth operation of the pulley assembly and reducing the risk of pulley jamming and wear caused by debris accumulation, thereby extending the service life of the equipment and reducing maintenance costs.

[0022] The clamping seat is made of high-strength aluminum alloy and coated with a high-temperature resistant and corrosion-resistant ceramic coating, which reduces the overall weight while ensuring sufficient strength, thereby improving the portability and operational flexibility of the device.

[0023] The slings, steel cables and support cables are all high-strength corrosion-resistant steel wire ropes, coated with anti-corrosion grease and wear-resistant plastic film, which enhances the durability of the ropes and further improves the performance and reliability of the entire boiler hanging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the installation of the hanging device of the present invention; Figure 2 It is a side schematic diagram of the hanging device of the present invention; Figure 3 is a schematic diagram of the mobile mechanism of the present invention; Figure 4 is a schematic diagram of a clamping assembly of the present invention; Figure 5 is a schematic diagram of a connector of the present invention; Figure 6 It is a top view of the arrangement of the hanging ropes of the present invention.

[0025] In the figure: 1. walking chassis mechanism; 11. chassis frame; 12. universal seat; 13. spherical slider; 14. lifting support leg; 15. track; 16. base; 17. hydraulic cylinder; 2. support frame; 3. extension arm; 4. winch; 5. sling; 6. pulley block; 7. clamping assembly; 71. clamping seat; 72. eccentric gear; 73. shaft rod; 74. eccentric disk; 75. cable hole; 76. driving motor; 77. moving block; 78. top plate; 79. driven assembly; 710. clamping pad; 711. pin rod hole; 712. cable winding disk; 713. connecting piece; 8. boiler body; 9. cable. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-6 The present invention provides a technical solution: a boiler hanging device, which is mainly composed of a walking chassis mechanism 1, a support frame 2, an extension arm 3, a winch 4, a sling 5, a pulley block 6, a clamping assembly 7, a boiler body 8 and a steel cable 9.

[0028] The walking chassis mechanism 1 serves as the basic support part of the entire device, including a chassis frame 11 supported at the upper end. A spherical slider 13 is fixed to the side of the chassis frame 11, and a lifting support leg 14 is installed on the chassis frame 11 outside the spherical slider 13. The lower end of the spherical slider 13 is slidably installed on the track 15, and the track 15 is fixed on the base 16. A hydraulic cylinder 17 is installed on the base 16 through a support, and the front end of the hydraulic cylinder 17 is connected to the chassis frame 11 through a universal seat 12. Through the operation of the hydraulic cylinder 17, the chassis frame 11 can be pushed to slide along the direction of the track 15 to achieve the position adjustment of the device in the horizontal direction. The lifting support leg 14 is used to adjust the height of the chassis frame 11 to ensure the stability of the device during lifting operations.

[0029] The support frame 2 is fixed above the walking chassis mechanism 1 to provide stable support for the extension arm 3. The extension arm 3 extends from the upper end of the support frame 2, and multiple groups of winches 4 are installed thereon. The sling 5 on the winch 4 passes through the pulley block 6 to connect the clamping assembly 7. The pulley block 6 includes a fixed pulley and a movable pulley, and the wheel grooves of the fixed pulley and the movable pulley are provided with a wear-resistant coating. The wear-resistant coating is made of nano-ceramic material, which can effectively improve the wear resistance and service life of the pulley. At the same time, a pulley cleaning device is provided on the pulley block 6, and the pulley cleaning device includes a cleaning brush and an air blowing nozzle. During the rotation of the pulley, the cleaning brush can automatically remove debris in the wheel groove, and the air blowing nozzle can blow away dust, ensuring the smooth operation of the pulley block 6 and avoiding the accumulation of debris or dust affecting the safety and efficiency of lifting.

[0030] The clamping assembly 7 is wrapped around the outside of the boiler body 8 by the steel cable 9. The clamping assembly 7 includes a clamping seat 71 at the bottom, a shaft 73 installed inside the clamping seat 71, and a driven assembly 79 installed above the shaft 73. One end of the shaft 73 extends out of the side of the clamping seat 71 to connect to the drive motor 76. An eccentric gear 72 and two sets of eccentric discs 74 are installed on the shaft 73, and a steel cable winding disc 712 is installed on the shaft 73. The driven assembly 79 is installed with an eccentric gear 72 and two sets of eccentric discs 74. The driven assembly 79 is installed on the moving block 77 on the side of the clamping seat 71. A top plate 78 is fixed on the top of the moving block 77, and a clamping pad 710 is installed on the side of the top plate 78. Pin rod holes 711 and cable holes 75 are respectively opened on the side plates of the clamping seat 71. Connectors 713 are installed on the pin rod holes 711, and the connectors 713 span the two sides of the clamping seat 71. The tow hole 75 is connected to the tow cable through the connection piece 713 installed, and the tow cable is supported at the bottom of the boiler body 8. The connection piece 713 includes a support with a pulley installed on the upper end and a U-shaped support at the lower end, and the through hole on the U-shaped support and the tow hole 75 are coaxially connected through a pin rod.

[0031] Detailed structure and function of each component The chassis frame 11 is welded with high-strength steel and has sufficient strength and rigidity to bear the weight of the entire lifting device and the boiler body 8. Its structural design is reasonable and provides a stable basic platform for the installation of other components.

[0032] The spherical slider 13 and the track 15 are matched with high-precision processing technology to ensure that the slider slides smoothly and accurately on the track. The spherical slider 13 can rotate freely within a certain range to adapt to the angle change of the chassis frame 11 during movement, ensuring the stability of the device when moving in different directions.

[0033] The lifting support legs 14 use hydraulic or electric lifting devices to accurately adjust the height of the chassis frame 11. Before lifting, the device is adjusted to a suitable height by lifting the support legs 14, so that the pulley block 6 on the extension arm 3 and the lifting point of the boiler body 8 are at the same height, which is convenient for subsequent lifting operations. At the same time, during the lifting process, the lifting support legs 14 can provide additional support force to enhance the stability of the device.

[0034] The hydraulic cylinder 17 is stably mounted on the base 16 through a support, and the front end of its piston rod is connected to the chassis frame 11 through a universal seat 12. The telescopic movement of the hydraulic cylinder 17 can push the chassis frame 11 to slide on the track 15, so as to achieve precise position adjustment of the device in the horizontal direction. The design of the universal seat 12 allows the chassis frame 11 to rotate freely within a certain angle range, avoiding the jamming phenomenon caused by uneven force during movement.

[0035] The support frame 2 adopts a truss structure design and is welded from multiple high-strength steel beams. Its structure has high stability and load-bearing capacity, and can firmly support the extension arm 3 above the walking chassis mechanism 1. At the same time, the design of the support frame 2 takes into account the spatial layout to ensure that the normal operation of other components is not affected during the lifting process, and provides sufficient operating space for operators.

[0036] The extension arm 3 is made of high-strength aluminum alloy, which reduces its own weight while ensuring sufficient strength. Its length and angle can be designed and adjusted according to actual lifting requirements to adapt to different working environments. The number and position of the hoist 4 installed on the extension arm 3 are reasonably configured according to the size and weight of the boiler body 8 to ensure stability and safety during the lifting process.

[0037] The hoist 4 adopts advanced variable frequency speed regulation technology, which can accurately change the lifting power according to the weight and lifting requirements of the boiler body 8. The operator can input parameters such as the weight of the boiler body 8 through the controller, and the hoist 4 automatically adjusts the motor speed and torque to achieve efficient and stable lifting operations.

[0038] The tension sensor in the overload protection device is installed at the connection between the sling 5 and the winch 4 to monitor the tension in the lifting process in real time. When the tension exceeds the preset value, the tension sensor transmits a signal to the controller, and the controller immediately controls the winch 4 to stop lifting and sends an alarm signal at the same time. The controller adopts a programmable logic controller PLC, which has high-precision data processing capabilities and reliable control performance, ensuring timely protection of equipment and personnel safety in overload conditions.

[0039] The nano ceramic wear-resistant coating in the fixed pulley and movable pulley groove is coated by plasma spraying technology. The coating has high hardness, low friction coefficient and good wear resistance, which can effectively resist the friction and wear between the pulley and the sling 5 during the lifting process, greatly extending the service life of the pulley.

[0040] The cleaning brush is made of high-strength nylon material, and the bristles have certain elasticity and wear resistance. The cleaning brush is installed on one side of the pulley block 6, in close contact with the pulley groove, and automatically removes debris in the groove during the rotation of the pulley. The air blowing nozzle is connected to the compressed air source through the air pipe. The position and angle of the air blowing nozzle are carefully designed to blow the dust removed by the cleaning brush away from the pulley block 6 to prevent the dust from entering the groove again. The operation of the pulley cleaning device is linked to the operation of the winch 4. When the winch 4 is started, the pulley cleaning device automatically starts to work.

[0041] The clamping seat 71 is made of high-strength aluminum alloy and is formed by precision casting process, which has good strength and rigidity. The high-temperature resistant and corrosion-resistant ceramic coating on its surface is coated by thermal spraying process, and the coating thickness is uniform, which can effectively prevent the clamping seat 71 from rusting and corroding in harsh environments such as high temperature and humidity, and at the same time improve its surface hardness and wear resistance.

[0042] The shaft 73 is made of high-strength alloy steel and has good comprehensive mechanical properties after quenching and tempering. The eccentric gear 72 and the eccentric disc 74 on the shaft 73 are processed by forging technology and then precision machining to ensure their dimensional accuracy and shape accuracy. The eccentric gears 72 mesh with each other to ensure the synchronous movement of the shaft 73 and the driven component 79. The structure of the driven component 79 is symmetrically designed with the corresponding components on the shaft 73, and the stable lifting and lowering control of the clamping pad 710 is achieved through the mutual cooperation of the eccentric disc 74.

[0043] The drive motor 76 adopts a low-speed high-torque motor with good starting performance and speed regulation performance. The motor is connected to the shaft 73 through a coupling to ensure the smoothness of power transmission. The operation of the drive motor 76 is controlled by a controller, and the operator can adjust the speed and direction of the motor according to actual conditions to achieve precise control of the lifting and lowering of the clamping pad 710.

[0044] The clamping pad 710 is made of rubber material, and its inner arc surface matches the outer contour of the boiler body 8. The undercut groove structure on the arc surface can increase the friction with the boiler body 8 to prevent the boiler from slipping during lifting. The clamping pad 710 is fixed to the top plate 78 by bolts for easy replacement and maintenance.

[0045] The cable winding drum 712 is made of cast steel, and the surface is galvanized, which has good anti-rust performance. The diameter and width of the cable winding drum 712 are designed according to the specifications of the cable 9 and the lifting requirements, ensuring that the cable 9 is arranged neatly during the winding process to avoid the phenomenon of tangled ropes. The cable winding drum 712 is connected to the shaft 73 by a key to achieve synchronous rotation.

[0046] The sling 5, the steel cable 9 and the support cable are all made of high-strength corrosion-resistant steel wire ropes, which are made of high-quality alloy steel and have high strength, high toughness and good fatigue resistance after special heat treatment. Each strand of the steel wire rope is tightly twisted to improve the overall strength of the rope.

[0047] The anti-corrosion grease coated on the rope surface uses high-performance lithium-based grease, which can effectively prevent the steel wire rope from rusting and corrosion, and at the same time play a lubricating role to reduce the wear of the rope during use. The wear-resistant plastic film uses polytetrafluoroethylene film, which is coated on the rope surface through a hot pressing process to further improve the wear resistance of the rope and extend its service life.

[0048] Lifting operation process Preparation before lifting First, the traveling chassis mechanism 1 is moved to a predetermined position close to the boiler body 8. By operating the hydraulic cylinder 17, the chassis frame 11 is pushed to slide along the track 15, and the horizontal position of the device is adjusted so that the extension arm 3 is roughly aligned with the lifting point of the boiler body 8.

[0049] Then, the height of the chassis frame 11 is adjusted by using the lifting support legs 14 so that the pulley block 6 on the extension arm 3 and the lifting point of the boiler body 8 are roughly at the same height. During the height adjustment process, the state of the spherical slider 13 on the track 15 is closely observed to ensure that it is in a stable state to avoid jamming or deviation.

[0050] Next, four sets of clamping assemblies 7 are placed at corresponding positions around the boiler body 8, so that the steel cable 9 can surround the boiler body 8. The tow rope is passed through the tow rope hole 75 on the clamping seat 71, and the tow rope is connected by the connecting piece 713 so that it is supported at the bottom of the boiler body 8. When connecting the tow rope, ensure that the tension of the tow rope is moderate, so that it can provide sufficient support force without causing excessive pressure on the boiler body 8.

[0051] Clamping boiler body Start the drive motor 76 to drive the shaft 73 to rotate. The eccentric disc 74 on the shaft 73 cooperates with the eccentric disc 74 of the driven assembly 79 to push the moving block 77 to drive the top plate 78 and the clamping pad 710 to rise. During the rising process, closely observe the contact between the clamping pad 710 and the boiler body 8 to ensure that the undercut groove structure on the inner arc surface of the clamping pad 710 is closely attached to the outer side of the boiler body 8 to form a reliable clamping force.

[0052] At the same time, the wire rope winding drum 712 starts to wind the wire rope 9, so that the wire rope 9 forms an enclosed structure and gradually shrinks to clamp the boiler body 8. In the process of winding the wire rope 9, pay attention to the winding order and tension of the wire rope 9 to ensure that the wire rope 9 is evenly wrapped around the outside of the boiler body 8 and the tension of each part is consistent.

[0053] Lifting process The lifting power of the hoist 4 is set on the controller according to the weight and lifting requirements of the boiler body 8. The operator can input the weight, size and other parameters of the boiler body 8, or select a suitable lifting mode based on experience, and the controller automatically adjusts the operating parameters of the hoist 4. For example, when lifting a lighter small boiler, the controller can set the hoist 4 to a lower power operation mode to achieve smooth and energy-saving lifting; while for a heavier large boiler, the high power mode is activated to ensure sufficient power to lift the boiler.

[0054] Start the winch 4, and the sling 5 lifts the boiler body 8 through the pulley block 6. During the lifting process, the tension sensor monitors the lifting tension in real time and transmits the signal to the controller. If the tension exceeds the preset value, the controller immediately controls the winch 4 to automatically stop lifting and sends an alarm signal. At the same time, the pulley cleaning device continues to work, the cleaning brush removes debris in the wheel groove, and the air nozzle blows away dust to ensure the smooth operation of the pulley block 6.

[0055] In order to ensure the smoothness of the lifting, the start-up and acceleration process of the winch 4 is controlled progressively. At the initial start-up, the motor runs slowly at a low speed, so that the sling 5 gradually bears the weight of the boiler body 8, avoiding the shaking of the boiler or damage to the sling 5 due to sudden force. As the boiler body 8 is lifted steadily, the controller gradually increases the motor speed according to the preset program to achieve uniform lifting.

[0056] The tension sensor is extremely accurate and can accurately monitor small changes in the lifting tension in real time. Its sampling frequency can reach dozens of times per second or even higher, ensuring that it can be fed back to the controller in time when the tension increases abnormally. The controller uses advanced algorithms to process the tension signal. Once it determines that the tension exceeds the safety threshold, it immediately sends a stop signal to the motor driver of the winch 4 and triggers the alarm device at the same time. The alarm device can be an audible and visual alarm that emits a loud sound and bright light signal to remind the on-site operator that there is an abnormality in the lifting process.

[0057] The cleaning brush and the air blowing nozzle of the pulley cleaning device work together. The bristles of the cleaning brush have moderate hardness, which can effectively remove debris in the wheel groove, such as dust, pebbles, etc., without causing damage to the pulley surface. The pressure of the compressed air sprayed by the air blowing nozzle is precisely adjusted, which is enough to blow the debris removed by the cleaning brush away from the pulley block 6 to prevent it from entering the wheel groove again. During the lifting process, the pulley cleaning device is closely linked to the operation of the winch 4. As long as the winch 4 is in working condition, the cleaning device will continue to operate to ensure that the pulley is always in good working condition.

[0058] During the lifting process, the operator should closely observe the state of the boiler body 8 to ensure that it rises smoothly and avoids shaking or tilting. If any abnormal situation is found, the lifting should be stopped immediately and corresponding measures should be taken.

[0059] The operator stands in a safe position with a good view and observes the lifting of the boiler body 8 with the naked eye. At the same time, the device can also be equipped with a high-precision inclination sensor and a displacement sensor to monitor the inclination angle and upward displacement of the boiler body 8 in real time. The inclination sensor can be accurate to within ±0.1°, and the displacement sensor can be accurate to the millimeter level. These sensors transmit data to the controller. When it is detected that the inclination angle of the boiler body 8 exceeds the allowable range or the displacement fluctuates abnormally, the controller will automatically stop the operation of the winch 4 and display specific abnormal information on the display screen to assist the operator in quickly determining the problem.

[0060] If the boiler body 8 is found to be slightly shaking, the operator can make fine adjustments by adjusting the running speed and direction of the winch 4. For example, when the boiler shakes to one side, the lifting speed of the sling 5 on that side is appropriately reduced, while the lifting speed of the sling 5 on the other side is accelerated to restore the boiler body 8 to stability. During the entire lifting process, the operator and the controller work closely together to ensure the safety and accuracy of the lifting operation.

[0061] In addition, during the hoisting process, the device also has windproof and earthquake-resistant functions. When encountering strong winds, the wind speed sensor on the device will monitor the wind speed in real time. When the wind speed exceeds the set safe wind speed (for example, 10 m / s), the controller will automatically adjust the hoisting speed according to the wind speed, or even suspend the hoisting operation and wait for the wind speed to decrease before continuing. At the same time, the structural design and connecting parts of the device have been specially optimized to effectively resist a certain degree of earthquake vibration, ensuring that when an earthquake occurs, the boiler body 8 will not fall due to the shaking of the device, thereby ensuring the safety of equipment and personnel to the greatest extent.

[0062] When the boiler body 8 is hoisted to the designated position, the operation of the winch 4 is stopped. At this time, the brake device of the winch 4 is immediately activated to ensure that the sling 5 can stably bear the weight of the boiler body 8 and prevent it from continuing to rise or fall due to inertia. The brake device adopts hydraulic or electromagnetic braking mode, has strong braking force and fast response performance, and can stop the rotation of the drum of the winch 4 in a short time.

[0063] Then, the driving motor 76 of the clamping assembly 7 is operated in reverse to rotate the shaft 73 in the reverse direction. In this process, the eccentric disc 74 on the shaft 73 cooperates with the eccentric disc 74 of the driven assembly 79 to drive the moving block 77 to move downward, thereby lowering the top plate 78 and the clamping pad 710. The operator needs to closely observe the separation of the clamping pad 710 from the boiler body 8 to ensure that the clamping pad 710 smoothly releases the clamping of the boiler body 8 to avoid collision or scratching the boiler body 8 due to the excessively fast or uneven descending speed of the clamping pad 710.

[0064] At the same time, the cable winding disc 712 is rotated in the reverse direction to loosen the cable 9. The reverse rotation of the cable winding disc 712 is precisely controlled by the driving motor 76 through a transmission device such as a gear transmission or a chain transmission. In the process of loosening the cable 9, it is necessary to ensure that the cable 9 is loosened evenly to avoid the cable 9 from being tangled or tangled. A guide device can be provided on the cable winding disc 712 to guide the cable 9 to be loosened in an orderly manner.

[0065] Finally, the boiler body 8 is slowly lowered and placed at the designated location. During the lowering process, the operator accurately controls the descending speed of the winch 4 through the controller to make it descend at a stable and slow speed. The descending speed is generally controlled between a few centimeters and more than ten centimeters per second. The specific speed can be adjusted according to factors such as the weight of the boiler body 8, the on-site environment, and the accuracy requirements of the placement position. When the boiler body 8 is close to the ground or the placement platform, the descending speed is further reduced to ensure that it lands smoothly.

Claims

1. A boiler hanging device, comprising a traveling chassis mechanism (1), a support frame (2) fixed above the traveling chassis mechanism (1), and an extension arm (3) extending from the upper end of the support frame (2); characterized in that: The extension arm (3) is equipped with a plurality of winches (4), and the hoisting rope (5) on the winch (4) passes through a pulley block (6) to connect to a clamping assembly (7), and the clamping assembly (7) is wrapped around the outside of the boiler body (8) via a steel cable (9); The clamping assembly (7) comprises a clamping seat (71) at the bottom, a shaft (73) installed inside the clamping seat (71), and a driven assembly (79) installed above the shaft (73); one end of the shaft (73) extends out of the side of the clamping seat (71) to connect to the driving motor (76); an eccentric gear (72) and two sets of eccentric disks (74) are installed on the shaft (73); a wire rope winding disk (712) is installed on the shaft (73); an eccentric gear (72) is installed on the driven assembly (79); two sets of eccentric disks (74) are installed on the driven assembly (79); the driven assembly (79) is installed on a moving block (77) on the side of the clamping seat (71); a top plate (78) is fixed on the top of the moving block (77); and a clamping pad (710) is installed on the side of the top plate (78).

2. A boiler hanging device according to claim 1, characterized in that: The side plates of the clamping seat (71) are respectively provided with a pin rod hole (711) and a tow rope hole (75), and a connecting piece (713) is installed on the pin rod hole (711) on the clamping seat (71), and the connecting piece (713) straddles both sides of the clamping seat (71), and a tow rope is connected to the tow rope hole (75) through the connecting piece (713) installed, and the tow rope installed on the tow rope hole (75) is supported on the bottom of the boiler body (8).

3. A boiler hanging device according to claim 2, characterized in that: The connecting member (713) comprises a support with a pulley mounted on the upper end and a U-shaped support at the lower end, and the through hole on the U-shaped support and the cable hole (75) are coaxially connected through a pin rod.

4. A boiler hanging device according to claim 3, characterized in that: The inner side of the clamping pad (710) is an arc-shaped surface, and an undercut groove structure is provided on the arc-shaped surface. The driving motor (76) drives the shaft (73) to rotate, and the eccentric disk (74) on the shaft (73) cooperates with the eccentric disk (74) of the driven component (79) to push the clamping pad (710) up and down.

5. A boiler hanging device according to claim 4, characterized in that: At least four groups of clamping assemblies (7) are arranged around the boiler body (8) below the pulley block (6), and the steel cables (9) connected to the four groups of clamping assemblies (7) form an enclosure structure. The clamping assemblies (7) are wound around the steel cables (9) to form a contraction clamping structure for the boiler body (8), wherein at least two groups of clamping assemblies (7) are wound around the supporting cables.

6. A boiler hanging device according to claim 5, characterized in that: The walking chassis mechanism (1) comprises a chassis frame (11) supported at the upper end, a spherical slider (13) being fixed on the side of the chassis frame (11), and a lifting support leg (14) being installed on the chassis frame (11) outside the spherical slider (13), and the lower end of the spherical slider (13) being slidably installed on a track (15), and the track (15) being fixed on a base (16), and a hydraulic cylinder (17) being installed on the base (16) via a support, and the front end of the hydraulic cylinder (17) being connected to the chassis frame (11) via a universal seat (12), and the operation of the hydraulic cylinder (17) pushes the chassis frame (11) to slide along the direction of the track (15).

7. A boiler hanging device according to claim 6, characterized in that: The hoist (4) on the extension arm (3) is adjustable and can change its lifting power according to the weight of the boiler body (8) and the lifting demand. The hoist (4) is provided with an overload protection device. When the pulling force during the lifting process exceeds a preset value, the lifting is automatically stopped and an alarm signal is issued. The overload protection device includes a tension sensor and a controller connected thereto. The tension sensor is used to monitor the lifting tension in real time. The controller controls the operation of the hoist (4) according to the signal of the tension sensor.

8. A boiler hanging device according to claim 7, characterized in that: The pulley block (6) comprises a fixed pulley and a movable pulley, and wear-resistant coatings are provided in the wheel grooves of the fixed pulley and the movable pulley. The wear-resistant coatings are made of nano-ceramic material, which greatly improves the wear resistance and service life of the pulleys. At the same time, a pulley cleaning device is provided on the pulley block (6), and the pulley cleaning device comprises a cleaning brush and an air blowing nozzle. During the rotation of the pulley, the cleaning brush can automatically remove debris in the wheel groove, and the air blowing nozzle can blow away dust, thereby ensuring the smooth operation of the pulley block (6) and avoiding the accumulation of debris or dust that affects the safety and efficiency of lifting.

9. A boiler hanging device according to claim 8, characterized in that: The clamping seat (71) is made of high-strength aluminum alloy material, which reduces the overall weight while ensuring sufficient strength, and the surface of the clamping seat (71) is coated with a high-temperature resistant and corrosion-resistant ceramic coating. The sling (5), steel cable (9) and support cable are all high-strength and corrosion-resistant steel wire ropes, and their surfaces are coated with a layer of anti-corrosion grease and a layer of wear-resistant plastic film.

10. A boiler hanging device according to claim 9, characterized in that: The hanging method of the hanging device comprises the following steps: First, the walking chassis mechanism (1) is moved to a predetermined position close to the boiler body (8), and the height of the chassis frame (11) is adjusted by lifting the support legs (14) so ​​that the pulley block (6) on the extension arm (3) and the lifting point of the boiler body (8) are approximately at the same height, while ensuring that the spherical slider (13) is in a stable state on the track (15); Next, four groups of clamping assemblies (7) are respectively placed at corresponding positions around the boiler body (8) so that the steel cable (9) can surround the boiler body (8), and the support cable is passed through the support cable hole (75) on the clamping seat (71), and the support cable is connected by a connecting piece (713) so that it is supported on the bottom of the boiler body (8); Then, the driving motor (76) is started to drive the shaft (73) to rotate, and the eccentric disk (74) on the shaft (73) cooperates with the eccentric disk (74) of the driven assembly (79) to push the moving block (77) to drive the top plate (78) and the clamping pad (710) to rise, and the inverted hook groove structure on the inner arc surface of the clamping pad (710) is closely attached to the outer side of the boiler body (8), and at the same time, the steel cable winding disk (712) starts to wind the steel cable (9), so that the steel cable (9) forms an enclosed structure and gradually shrinks to clamp the boiler body (8); Afterwards, according to the weight of the boiler body (8) and the lifting requirements, the lifting power of the winch (4) is set on the controller, and the winch (4) is started. The sling (5) lifts the boiler body (8) through the pulley block (6). During the lifting process, the tension sensor monitors the lifting tension in real time and transmits a signal to the controller. If the tension exceeds a preset value, the controller controls the winch (4) to automatically stop lifting and issue an alarm signal. Finally, after the lifting is completed, the boiler body (8) is placed at the designated position, and the above steps are reversed to first release the clamping assembly (7) on the boiler body (8), and then slowly lower the boiler body (8) to complete the entire hanging process. During the entire process, the pulley cleaning device continues to work, the cleaning brush removes debris in the wheel groove, and the air nozzle blows away dust to ensure that the pulley block (6) runs smoothly.

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