A lifting platform with protective function for boiler furnace maintenance

Abstract

The present invention relates to the field of lifting equipment, and in particular to a lifting platform for boiler furnace maintenance with a protective function. The technical solution of the present invention is: a lifting platform for boiler furnace maintenance with a protective function, including a strong beam frame and an electric platform; the strong beam frame is slidably connected to the electric platform; the electric platform is detachably connected to a power distribution cabinet. The present invention sets a wire wheel I and a wire wheel II to reel and unreel the safety rope in turn, and an electromagnetic flaw detector performs electromagnetic non-contact detection on the safety rope. Based on real-time online and high-speed automatic data collection, a comprehensive detection of the internal and external states of the safety rope is achieved, which greatly improves the detection efficiency of the safety rope, thereby quickly detecting the safety rope, facilitating the use of the safety rope by the staff, and effectively avoiding the damage of the safety rope after long-term use, which brings safety hazards to the staff using the safety rope.

Description

Technical Field

[0001] The invention relates to the field of lifting equipment, and in particular to a lifting platform for boiler furnace maintenance with a protective function. Background Art

[0002] In the prior art, when performing maintenance work on the boiler furnace, it is generally necessary to use lifting equipment to send workers into the boiler, and the workers perform maintenance on the boiler furnace on the maintenance platform. The current lifting platform uses the cooperation of steel cables and protective ropes to ensure the safety and stability of the lifting platform during operation, and cooperates with guardrails and safety ropes to provide simple protection for the workers. However, in actual maintenance work, the safety rope will be partially worn or even broken after long-term use. The workers use this safety rope to perform maintenance work in the boiler furnace. This safety rope cannot provide sufficient safety protection for the workers, and poses a serious safety hazard to the workers using the safety rope. Summary of the invention

[0003] The technical problems of the present invention are:

[0004] In order to overcome the disadvantage that the safety rope may be partially worn or even broken after long-term use, and the safety rope cannot provide sufficient safety protection for the workers, which brings serious safety hazards to the workers using the safety rope, the present invention provides a lifting platform for boiler furnace maintenance with a protective function.

[0005] The technical solution of the present invention is: a lifting platform for boiler furnace maintenance with protective function, including a strong beam frame, an electric platform and a lifting frame; the strong beam frame is slidably connected to the electric platform; the electric platform is detachably connected to the power distribution cabinet; the strong beam frame is detachably connected to the lifting frame, and the lifting frame is connected to the external winch; it also includes a mounting frame, a protective box, a box door, a vertical beam, a wire wheel I, a safety rope, a wire wheel II and an electromagnetic flaw detector; the electric platform is detachably connected to the mounting frame; the mounting frame is detachably connected to the A protection box is connected; the protection box is electrically connected to the power distribution cabinet of the electric walkway; the protection box is movably connected to a box door; a vertical beam is fixedly connected in the protection box; a wire wheel I and a wire wheel II are rotatably connected between the vertical beam and the protection box; the wire wheel I can actively reel in a safety rope; a safety hole is opened in the protection box; the safety rope passes through the safety hole; a fixing hook is provided on the wire wheel II; the fixing hook cooperates with the safety rope to fix the end of the safety rope; an electromagnetic flaw detector is installed in the protection box; the electromagnetic flaw detector is used for electromagnetic non-contact detection of the safety rope.

[0006] More preferably, the electric walkway is detachably connected to a plurality of guardrails, and distance sensors are provided on the guardrails for monitoring a safe distance between the electric walkway and the lifting frame.

[0007] More preferably, the box door is provided with an anti-slip insulating handle.

[0008] More preferably, it further includes a motor I; the vertical beam is equipped with the motor I; and the output shaft of the motor I is fixedly connected to the reel I.

[0009] More preferably, it further includes a motor II; the vertical beam is equipped with the motor II; the motor II is located below the motor I; and the output shaft of the motor II is fixedly connected to the reel II.

[0010] More preferably, a lock buckle is further included; the safety rope is fixedly connected to the lock buckle, and a limiting threaded sleeve is screwed on the lock buckle to limit the lock tongue of the lock buckle.

[0011] More preferably, it also includes an electric actuator I and a clamp; a plurality of electric actuators I are installed on the vertical beam; the telescopic parts of all electric actuators I are fixedly connected to the clamp; the clamp is fixedly connected to the motor II; a central shaft is provided in the wire wheel II; a pin hole is opened in the central shaft; the output shaft of the motor II cooperates with the pin hole.

[0012] More preferably, it also includes a holder, a safety rod, an elastic member, a pull rope, a sleeve, a spring rod and a guide wheel; the protection box is fixedly connected to two holders; each holder is fixedly connected to an elastic member; each elastic member is fixedly connected to a safety rod; each safety rod is slidably connected to a holder; the two safety rods cooperate with each other to hang the safety rope; two sleeves are embedded in the protection box; each sleeve is slidably connected to a pull rope; each pull rope is fixedly connected to a safety rod; two spring rods are installed in the safety hole; a guide wheel is rotatably connected between the two spring rods; the telescopic parts of the two spring rods are fixedly connected to a pull rope on opposite sides.

[0013] More preferably, rotating parts are arranged on the opposite sides of the two safety bars; and the motor I is arranged to have a self-locking function of the output shaft.

[0014] More preferably, it also includes an electric actuator II and an arc plate; two electric actuators II are installed in the protective box; the telescopic parts of the two electric actuators II are movably connected with the arc plate, and a sensor is arranged on the arc plate; torsion springs are arranged between the telescopic parts of the two electric actuators II and the arc plate; and a wear-resistant rubber layer is arranged on the side of the arc plate facing the wire wheel II.

[0015] The beneficial effects are: 1. The present invention sets reels I and II to reel in and unreel the safety rope in turn, and the electromagnetic flaw detector performs electromagnetic contactless detection on the safety rope. Based on real-time online and high-speed automatic data collection, a comprehensive detection of the internal and external states of the safety rope is achieved, which greatly improves the detection efficiency of the safety rope, thereby quickly detecting the safety rope, making it convenient for staff to use the safety rope, and effectively preventing the safety rope from being damaged after long-term use, thereby posing a safety hazard to the staff using the safety rope.

[0016] 2. The safety rope is driven through the two safety bars and the electromagnetic flaw detector by the lock. When the worker is in danger, the safety rope connected to the worker is suddenly pulled, so that the two safety bars are quickly separated, and the safety rope passes over the two safety bars. Then the safety rope becomes vertically taut, and the safety rope contacts the upper part of the arc plate, and the arc plate starts to rotate. Then the two electric actuators II extend, and the arc plate presses the safety rope onto the wire wheel II, so that the safety rope is clamped to prevent the safety rope from continuing to unwind, so that the worker's falling distance is within a controllable range to avoid accidents. In combination with the output shaft of the motor I itself being locked, the worker is protected in this double protection manner, which is conducive to ensuring the safety of the worker in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the lifting platform for boiler furnace maintenance with protective function of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the electric walking platform of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the protection box of the present invention;

[0020] Figure 4 It is a schematic diagram of the cooperation between the wire wheel II and the motor II of the present invention;

[0021] Figure 5 It is a schematic diagram of the installation position of the safety bar and the arc plate of the present invention;

[0022] Figure 6 It is a schematic diagram of the installation position of the safety bar of the present invention;

[0023] Figure 7 This is a schematic diagram of the guide wheel installation position of the present invention;

[0024] Figure 8 It is a schematic diagram of the combined structure of the safety rod, the pull rope, the sleeve, the spring rod and the guide wheel of the present invention;

[0025] Fig. 9 It is a schematic diagram of the cooperation of the safety rod, the pull rope, the spring rod and the guide wheel of the present invention.

[0026] In the accompanying drawings: 1-strong beam frame, 2-electric walkway, 3-lifting frame, 4-mounting frame, 5-protection box, 6-box door, 7-vertical beam, 8-motor I, 9-wire wheel I, 10-safety rope, 11-lock buckle, 12-wire wheel II, 13-electric actuator I, 14-clamp, 15-motor II, 16-electromagnetic flaw detector, 5001-safety hole, 1201-fixed hook, 1202-center axis, 1203-pin hole, 101-card seat, 102-safety rod, 103-elastic part, 104-pull rope, 105-sleeve, 106-spring rod, 107-guide wheel, 201-electric actuator II, 202-arc plate. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0028] Embodiment 1

[0029] A lifting platform for boiler furnace maintenance with protective function, according to Figure 1-Figure 4 As shown, it includes a strong beam frame 1, an electric platform 2 and a lifting frame 3; the strong beam frame 1 is slidably connected to the electric platform 2; the electric platform 2 is detachably connected to the power distribution cabinet; the strong beam frame 1 is detachably connected to two lifting frames 3, and the lifting frames 3 are connected to the external winch;

[0030] It also includes a mounting frame 4, a protective box 5, a box door 6, a vertical beam 7, a wire wheel Ⅰ9, a safety rope 10, a wire wheel Ⅱ12 and an electromagnetic flaw detector 16; the electric platform 2 is detachably connected to the mounting frame 4; the mounting frame 4 is detachably connected to the protective box 5; the protective box 5 is electrically connected to the power distribution cabinet of the electric platform 2; the protective box 5 is hinged with a box door 6; a vertical beam 7 is welded inside the protective box 5; the wire wheel Ⅰ9 and the wire wheel Ⅱ12 are rotatably connected between the vertical beam 7 and the rear wall of the protective box 5; the wire wheel Ⅱ12 is located below the wire wheel Ⅰ9 The wire wheel Ⅰ9 can actively reel up the safety rope 10, and the safety rope 10 is in contact with the wire wheel Ⅱ12, and the safety rope 10 is made of ferromagnetic material; a safety hole 5001 is opened at the lower part of the protection box 5; the safety rope 10 passes through the safety hole 5001; a fixing hook 1201 is provided on the wire wheel Ⅱ12; the fixing hook 1201 cooperates with the safety rope 10 to fix the end of the safety rope 10; an electromagnetic flaw detector 16 is installed in the protection box 5; the electromagnetic flaw detector 16 is used for electromagnetic non-contact detection of the safety rope 10.

[0031] The electric platform 2 is detachably connected to a plurality of guardrails, and distance sensors are provided on the guardrails for monitoring the safe distance between the electric platform 2 and the lifting frame 3.

[0032] The box door 6 is provided with an anti-slip insulating handle, which facilitates opening the box door 6 while preventing electric leakage from causing electric shock to the staff.

[0033] It also includes a motor Ⅰ8; the vertical beam 7 is equipped with the motor Ⅰ8; the output shaft of the motor Ⅰ8 is fixedly connected to the wire wheel Ⅰ9.

[0034] It also includes a motor II 15; the vertical beam 7 is equipped with the motor II 15; the motor II 15 is located below the motor I8; ​​and the output shaft of the motor II 15 is fixedly connected to the wire wheel II 12.

[0035] It also includes a lock buckle 11; the lower end of the safety rope 10 is fixedly connected to the lock buckle 11, and a limiting threaded sleeve is screwed on the lock buckle 11 to limit the lock tongue of the lock buckle 11.

[0036] It also includes an electric actuator Ⅰ13 and a clamp 14; the vertical beam 7 is equipped with two electric actuators Ⅰ13 distributed up and down; the electric actuator Ⅰ13 is an electric push rod; all the telescopic parts of the electric actuator Ⅰ13 are fixedly connected with the clamp 14; the clamp 14 is fixedly connected with the motor Ⅱ15; a central axis 1202 is provided in the wire wheel Ⅱ12; a pin hole 1203 is opened in the central axis 1202; the output shaft of the motor Ⅱ15 cooperates with the pin hole 1203.

[0037] The working steps of the above embodiment are:

[0038] Before use, first set up the winch above the boiler, then the various functional components of the maintenance platform are sent in from the manhole and handhole of the boiler, and then quickly assembled in the boiler, then the maintenance platform and the winch are connected together through the wire rope and the protective rope, the winch is responsible for driving the platform to rise or fall along the track, and the assembled maintenance platform is connected to the power supply, and Figure 1 As shown, the side where the electric walkway 2 is located is the front side.

[0039] When the staff enters the electric walkway 2, the first thing to do is to test the stability of the moving function of the electric walkway 2 on the strong beam frame 1, and then control the winch to drive the up and down movement of the maintenance platform for testing. When all data are within the safe range, the safety of the staff during the operation is tested, that is, the safety rope 10 is tested. The staff first holds and rotates the handle of the anti-slip and insulated box door 6, and then pulls the handle outward to open the box door 6. Then the staff hooks the lock buckle 11 on the fixed hook 1201, and then closes the box door 6, and then opens the power distribution cabinet on the electric walkway 2, and presses the self-test button to test the safety rope 10. At this time, the two electric actuators Ⅰ13 are controlled to contract, and the clamp 14 synchronously drives the transmission motor Ⅱ15 to move in the direction close to the vertical beam 7 until the output shaft of the motor Ⅱ15 is inserted into the center axis 1 202, and then control to start motor Ⅰ8 and motor Ⅱ15, the output shaft of motor Ⅱ15 drives the central shaft 1202 to rotate, the central shaft 1202 drives the wire wheel Ⅱ12 to reel in the safety rope 10, the output shaft of motor Ⅰ8 drives the wire wheel Ⅰ9 to rotate and unwind the safety rope 10, so as to wind the safety rope 10 onto the wire wheel Ⅱ12, wherein during the process of reeling and releasing the safety rope 10, the electromagnetic flaw detector 16 performs electromagnetic non-contact detection on the ferromagnetic safety rope 10, based on real-time online and high-speed automatic data collection, realizes comprehensive detection of the internal and external states of the safety rope 10, greatly improves the detection efficiency of the safety rope 10, thereby quickly detecting the safety rope 10, facilitating the safe use of the safety rope 10 by the staff, and effectively avoiding the damage of the safety rope 10 after long-term use, which brings safety hazards to the staff using the safety rope 10.

[0040] After the inspection is completed, if the safety rope 10 is normal, then the output shafts of the motors Ⅰ8 and Ⅱ15 are controlled to reverse, and the corresponding reels Ⅰ9 and Ⅱ12 are synchronously driven to reverse, so as to wind the safety rope 10 back onto the reel Ⅰ9. After the fixed hook 1201 is reset, Figure 3 As shown, the two electric actuators Ⅰ13 are then controlled to extend so that the output shaft of the motor Ⅱ15 is withdrawn from the pin hole 1203, as shown in FIG. Figure 4As shown, the self-test button on the power distribution cabinet of the electric walkway 2 is pressed to stop the self-test. At this time, the staff opens the box door 6 again, removes the lock buckle 11 from the fixed hook 1201, and then sends the lock buckle 11 out of the safety hole 5001, and at the same time cooperates with the wire wheel Ⅰ9 to unwind the safety rope 10, and the lock buckle 11 also pulls out the safety rope 10. The staff unscrews the upper limit threaded sleeve of the lock buckle 11, and then moves the lock tongue to connect the lock buckle 11 with the safety hook on the staff, and then resets the threaded limit sleeve. As a result, when the staff moves on the electric walkway 2, the safety rope 10 is slowly pulled out to accommodate the staff's inspection work in the boiler furnace, and according to the number of staff on the electric walkway 2, a corresponding number of protection boxes 5 are set to provide protection for the staff.

[0041] Second embodiment

[0042] On the basis of the first embodiment, according to Figure 1-Figure 2 and Figure 5-Figure 9 As shown, it also includes a holder 101, a safety rod 102, an elastic member 103, a pull rope 104, a sleeve 105, a spring rod 106 and a guide wheel 107; two holders 101 are bolted to the left wall of the protection box 5; each holder 101 is fixed with an elastic member 103; each elastic member 103 is fixed with a safety rod 102; each safety rod 102 is slidably connected to a holder 101; the two safety rods 102 cooperate with each other to hang the safety rope 10; two sleeves 105 are embedded in the protection box 5; each sleeve 105 is slidably connected with a pull rope 104; each pull rope 104 is fixed to a safety rod 102; two spring rods 106 are installed in the safety hole 5001; a guide wheel 107 is rotatably connected between the two spring rods 106; the two spring rods 106 are fixed with a pull rope 104 on the opposite sides of the telescopic parts.

[0043] The two safety bars 102 are provided with rotating parts on the opposite sides thereof; the motor Ⅰ8 is provided with a self-locking function of the output shaft.

[0044] It also includes an electric actuator Ⅱ201 and an arc plate 202; two electric actuators Ⅱ201 are installed on the right wall inside the protective box 5; the electric actuator Ⅱ201 is an electric push rod; the telescopic parts of the two electric actuators Ⅱ201 are hinged with an arc plate 202, and a sensor is arranged on the arc plate 202; torsion springs are arranged between the telescopic parts of the two electric actuators Ⅱ201 and the arc plate 202; a wear-resistant rubber layer is arranged on the side of the arc plate 202 facing the wire wheel Ⅱ12.

[0045] The working steps of the above embodiment are:

[0046] On the basis of the first embodiment, the electric platform 2 is moved horizontally in the front and rear directions on the strong beam frame 1, and Figure 1As shown, the side where the numbered position of the electric platform 2 is located is the front side. At this time, the electromagnetic flaw detector 16 is set on the inner left wall of the protection box 5, and then the lock buckle 11 and the safety rope 10 are driven to separate from the wire wheel II 12, and the lock buckle 11 drives the safety rope 10 to pass through between the two safety bars 102 and the electromagnetic flaw detector 16. Initially, the two safety bars 102 are kept in a tightly fitted state, and then the safety rope 10 is rewound on the wire wheel II 12, and the lock buckle 11 is hung on the fixed hook 1201. Then the motor I8 drives the wire wheel I9 to rotate, so that the safety rope 10 is tightened. At this time, the state of the safety rope 10 is as follows: Figure 5 As shown, when the safety rope 10 is self-checked and used normally, the process is consistent with that described in the first embodiment. When the safety rope 10 is self-checked and used normally, the rotating part on the safety rod 102 can rotate in coordination with the movement of the safety rope 10 to reduce the wear of the safety rope 10. When the safety rope 10 is in use, the buckle 11 drives the safety rope 10 to be sent out from the safety hole 5001, so that the safety rope 10 contacts the guide wheel 107, thereby avoiding wear between the safety rope 10 and the safety hole 5001 when the safety rope 10 is in use, thereby reducing the service life of the safety rope 10.

[0047] When the workers are carrying out maintenance work on the boiler furnace, they need to lean out of the guardrail of the electric walkway 2 and approach the boiler furnace for maintenance. The workers' center of gravity is unstable, which may easily cause them to fall from the electric walkway 2 during the maintenance process. When the workers are carrying out maintenance work on the boiler furnace, they need to move, so the wire wheel Ⅰ9 needs to adapt to the unwinding and reeling of the safety rope 10. As a result, when the workers fall, the output shaft of the motor Ⅰ8 is not locked. As the workers fall, the safety rope 10 will pull the wire wheel Ⅰ9 to unwind, thereby greatly increasing the falling distance of the workers, which may easily cause the workers to collide with the boiler furnace or the ground, causing an accident. When the worker falls, the worker cannot actively use the controller to lock the output shaft of the motor Ⅰ8 in such an emergency situation. Therefore, when the worker falls while performing maintenance work on the boiler furnace, first, the safety rope 10 connected to the worker is suddenly pulled, and the gravity of the worker falling downward will be applied to the safety rope 10, so that the safety rope 10 quickly presses the guide wheel 107 downward, the two spring rods 106 are quickly compressed, and the corresponding pull rope 104 is pulled downward synchronously, so that the two safety rods 102 are quickly separated, the two elastic members 103 are compressed, and the safety rope 10 passes over the two safety rods 102. The safety rope 10 becomes vertically taut, as shown in FIG. Fig. 9As shown, at this time, the safety rope 10 contacts the upper part of the arc plate 202, and the arc plate 202 begins to rotate. The lower part of the arc plate 202 presses the safety rope 10 in the direction of the wire wheel Ⅱ12. As a result, the wire wheel Ⅱ12 cooperates with the wear-resistant rubber layer at the lower part of the arc plate 202 to clamp the safety rope 10 and the wire wheel Ⅱ12. The wear-resistant rubber layer at the lower part of the arc plate 202 is used to increase the friction between the safety rope 10 and the wire wheel Ⅱ12 to ensure the clamping effect of the safety rope 10 and the wire wheel Ⅱ12. Therefore, through mechanical triggering, the safety rope 10 and the wire wheel Ⅱ12 are automatically clamped when the staff falls, so as to prevent the safety rope 10 from continuing to unwind, so that the falling distance of the staff is within a controllable range and accidents are avoided. When the safety rope 10 quickly presses the guide wheel 107 downward and the safety rope 10 pushes the arc plate 202, the sensors on the guide wheel 107 and the arc plate 202 send signals to extend the electric actuator Ⅱ201, lock the output shaft of the motor Ⅰ8, and the electric actuator The extension of the traveler II 201 will synchronously drive the arc plate 202 to move in the direction of the wire wheel II 12, and further press the arc plate 202 against the safety rope 10 and the wire wheel II 12. When the arc plate 202 is further pressed, the lower part of the arc plate 202 will be deformed, thereby strengthening the clamping effect of the safety rope 10 and the wire wheel II 12, ensuring the protection of the staff, and thus locking the arc plate 202 and the output shaft of the motor I8 itself. In this way, the staff is safely protected in a double protection manner, which is beneficial to ensuring the safety of the staff in emergency situations, and the guide wheel 107 and the sensor on the arc plate 202 send signals to control the extension of the electric actuator II 201 and the locking of the output shaft of the motor I8, which can ensure that the extension of the electric actuator II 201 and the locking of the output shaft of the motor I8 can be stably triggered, that is, when one sensor fails, the other sensor can still control the extension of the electric actuator II 201 and the locking of the output shaft of the motor I8, which is more conducive to ensuring safety.

[0048] After the worker falls, and the arc plate 202 clamps the safety rope 10 and the wire wheel II 12, and the output shaft of the motor I8 is locked, after a delay of a few minutes, the sensors on the guide wheel 107 and the arc plate 202 send signals to control the two electric actuators II 201 to contract, so that the arc plate 202 is separated from the wire wheel II 12, and then the motor I8 is controlled to drive the wire wheel I9 to reel the safety rope 10, so that the dangerous worker can be hoisted upward, and then the worker climbs back to the electric walkway 2 through the railings on the electric walkway 2, so that the worker can save himself from life danger and avoid long-term suspension. The safety rope 10 and the electric walkway 2 are worn and easy to break. After the worker returns to the electric walkway 2, at this time, the winch is controlled to make the electric walkway 2 return to the ground, and then the worker removes the lock buckle 11 from the safety hook on the body and opens the box door 6, and restores the lock buckle 11 and the safety rope 10 to the original state. Figure 5The state shown is shown, and the lock buckle 11 is hooked on the fixed hook 1201 again. It is explained here that when the staff returns to the electric walkway 2, the pressure of the guide wheel 107 on the safety rope 10 is greatly reduced, so that the spring rod 106 drives the guide wheel 107 to reset, and the elastic member 103 drives the safety rod 102 to reset. After the lock buckle 11 is hooked on the fixed hook 1201 again, the staff closes the box door 6 and presses the self-check button on the electric control cabinet of the electric walkway 2 to perform a self-check on the safety rope 10 to avoid safety hazards left by the safety rope 10 when the staff falls.

[0049] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lifting platform for boiler furnace maintenance with protective function, comprising a strong beam frame, an electric platform and a lifting frame; the strong beam frame is slidably connected to the electric platform; the electric platform is detachably connected to the power distribution cabinet; the strong beam frame is detachably connected to the lifting frame, and the lifting frame is connected to an external winch; characterized in that: It also includes a mounting frame, a protection box, a box door, a vertical beam, a wire wheel I, a safety rope, a wire wheel II and an electromagnetic flaw detector; the electric platform is detachably connected to the mounting frame; the mounting frame is detachably connected to the protection box; the protection box is electrically connected to the power distribution cabinet of the electric platform; the protection box is movably connected to the box door; a vertical beam is fixedly connected in the protection box; wire wheels I and II are rotatably connected between the vertical beam and the protection box; wire wheel I can actively reel up the safety rope; the protection box is provided with a safety hole; the safety rope passes through the safety hole; a fixing hook is provided on wire wheel II; the fixing hook cooperates with the safety rope to fix the end of the safety rope; an electromagnetic flaw detector is installed in the protection box; the electromagnetic flaw detector is used for electromagnetic non-contact detection of the safety rope; It also includes a motor I; the vertical beam is equipped with the motor I; the output shaft of the motor I is fixedly connected to the wire wheel I; The invention also includes a motor II; the vertical beam is equipped with the motor II; the motor II is located below the motor I; the output shaft of the motor II is fixedly connected to the wire wheel II; It also includes a lock buckle; the safety rope is fixedly connected to the lock buckle, and a limiting threaded sleeve is screwed on the lock buckle to limit the lock tongue of the lock buckle.

2. The boiler furnace maintenance lifting platform with protective function according to claim 1 is characterized by: The electric walkway is detachably connected to a plurality of guardrails, and distance sensors are arranged on the guardrails to monitor the safe distance between the electric walkway and the lifting frame.

3. The boiler furnace maintenance lifting platform with protective function according to claim 1 is characterized by: The door is equipped with an anti-slip and insulated handle.

4. A boiler furnace maintenance lifting platform with protective function according to any one of claims 1 to 3, characterized in that: It also includes an electric actuator I and a clamp; a plurality of electric actuators I are installed on the vertical beam; the telescopic parts of all electric actuators I are fixedly connected with the clamp; the clamp is fixedly connected with the motor II; a central shaft is arranged in the wire wheel II; a pin hole is opened in the central shaft; the output shaft of the motor II is matched with the pin hole.

5. The lifting platform for boiler furnace maintenance with protective function according to claim 4 is characterized by: It also includes a holder, a safety rod, an elastic part, a pull rope, a sleeve, a spring rod and a guide wheel; the protection box is fixedly connected to two holders; each holder is fixedly connected to an elastic part; each elastic part is fixedly connected to a safety rod; each safety rod is slidably connected to a holder; the two safety rods cooperate with each other to hang the safety rope; two sleeves are embedded in the protection box; each sleeve is slidably connected to a pull rope; each pull rope is fixedly connected to a safety rod; two spring rods are installed in the safety hole; a guide wheel is rotatably connected between the two spring rods; the opposite sides of the telescopic parts of the two spring rods are fixedly connected to a pull rope.

6. The boiler furnace maintenance lifting platform with protective function according to claim 5 is characterized by: The two safety bars are provided with rotating parts on the opposite sides; the motor I is provided with a self-locking function of the output shaft.

7. The boiler furnace maintenance lifting platform with protective function according to claim 5 is characterized by: It also includes an electric actuator II and an arc plate; two electric actuators II are installed in the protective box; the telescopic parts of the two electric actuators II are movably connected with the arc plate, and sensors are arranged on the arc plate; torsion springs are arranged between the telescopic parts of the two electric actuators II and the arc plate; a wear-resistant rubber layer is arranged on the side of the arc plate facing the wire wheel II.

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