A safety protection and rescue device for working in a confined space and its usage method

Abstract

The present invention discloses a safety protection and rescue device for confined space operation, which is characterized in that: it includes a rescue support box I, a rescue support box II, a rescue support, a safety integration mechanism and a rescue mechanism. The rescue support box I and the rescue support box II are fixedly connected to the well wall. The rescue support is connected to the rescue support box I and the rescue support box II. The safety integration mechanism is connected to the underground passage and the rescue support. The rescue mechanism is connected to the rescue support. There is an up-and-down passage ladder on the well wall, and the rescue support box I and the rescue support box II are respectively arranged on the two well walls at 90 degrees to the ladder. The rescue support includes a left vertical rod, a cross bar and a right vertical rod. The left vertical rod is connected to the rescue support box I, the right vertical rod is connected to the rescue support box II, and both ends of the cross bar are connected to the tops of the left vertical rod and the right vertical rod respectively to form a door frame structure. The present invention also discloses a usage method of the safety protection and rescue device for confined space operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of safety in confined space operations, and particularly relates to a safety protection and rescue device for confined space operations and a method for using the same. Background Art

[0002] Confined space operations are involved in industries such as hazardous chemicals, construction, electricity, shipbuilding, municipal engineering, sewage treatment, communication construction, industrial and trade, etc.

[0003] A confined space refers to a space that is enclosed or partially enclosed, relatively isolated from the outside, has a relatively narrow entrance and exit, where operators cannot work for a long time, has poor natural ventilation, and is prone to accumulation of toxic, harmful, flammable and explosive substances or insufficient oxygen content. Confined space operations refer to various operations carried out in the above-mentioned confined spaces, such as hot work, inspection and maintenance operations in closed or semi-closed equipment such as storage (tank) tanks, pipelines, boilers; underground pipelines, underground warehouses, underground projects, sewage pits (wells), biogas digesters and other underground confined spaces.

[0004] Due to the presence of dangers such as lack of oxygen, flammable and explosive substances (flammable gases, explosive dust), toxic and harmful gases, electric shock, scalding, and frostbite in confined spaces. As a result, accidents in confined space operations occur frequently, and the accidents are expanded and the losses are aggravated due to blind rescue. If a safety rescue device can be set at the entrance of the confined space, the occurrence of accidents can be reduced and the lives and health of operators can be guaranteed. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a safety protection and rescue device for confined space operations, starting from the perspective of intrinsic safety, to solve the problems of safe operation and emergency rescue in confined spaces; the present invention also provides a method for using a safety protection and rescue device for confined space operations.

[0006] To achieve the above purpose, the technical solution of the present invention is: a safety protection and rescue device for confined space operations, characterized in that: it includes a rescue support box I, a rescue support box II, a rescue support, a safety integration mechanism and a rescue mechanism. The rescue support box I and the rescue support box II are fixedly connected to the well wall, the rescue support is connected to the rescue support box I and the rescue support box II, the safety integration mechanism is connected to the underground passage and the rescue support, and the rescue mechanism is connected to the rescue support.

[0007] Furthermore, there is an up-and-down passage ladder on the well wall, and the rescue support box I and the rescue support box II are respectively arranged on the two well walls at 90 degrees to the ladder.

[0008] Furthermore, the rescue support includes a left vertical pole, a crossbar, and a right vertical pole. The left vertical pole is connected to the rescue support box I, the right vertical pole is connected to the rescue support box II, and both ends of the crossbar are respectively connected to the tops of the left vertical pole and the right vertical pole to form a door frame structure.

[0009] Furthermore, the rescue support boxes I and II are provided with cavities for placing the left vertical pole, the crossbar, and the right vertical pole. The crossbar is connected to the left vertical pole by a hinge. When the left vertical pole and the crossbar are nested in the cavity of the rescue support box I, the left vertical pole and the crossbar are at 180 degrees, and the right vertical pole is nested in the rescue support box II.

[0010] Furthermore, the rescue support boxes I and II are provided with tracks, and pulleys are provided on the outer walls of the left vertical pole and the right vertical pole. The left vertical pole and the right vertical pole are slidably connected to the rescue support boxes I and II through the cooperation of the pulleys and the tracks.

[0011] Furthermore, the rescue mechanism includes a safety rope, a safety rope recovery rocker, a reel for placing the safety rope, and a safety hook. The crossbar is a channel steel hollow structure. The reel is rotatably connected to the middle of the crossbar. The safety rope recovery rocker is connected to the reel. The safety rope is wound around the reel. The safety rope passes through the middle position of the crossbar and exits the crossbar. The safety hook is connected to the safety rope. By shaking the safety rope recovery rocker, the reel rotates, and the safety rope is tightened or loosened, and the safety hook moves up or down.

[0012] Furthermore, a motor for driving the recovery rocker to rotate is provided in the safety rope recovery rocker. An anti-falling device is also connected to the safety hook on the safety rope. A corner roller is provided at the corner of the shaft well and the underground passage. A groove is provided on the corner roller, and the size of the groove is larger than the diameter of the safety rope. The safety rope is clamped in the groove of the corner roller.

[0013] Furthermore, the safety integration mechanism includes a four-in-one detector, a four-in-one detection display, a lighting lamp, and an in-well intercom. The four-in-one detector, the lighting lamp, and the in-well intercom are connected to the top of the underground passage. The four-in-one detection display is installed on the left vertical pole and is located outside the shaft well. The four-in-one detection display is connected to the four-in-one detector. An external intercom is also provided on the left vertical pole, and the external intercom is connected to the in-well intercom.

[0014] Furthermore, the safety integration mechanism includes an alarm rope. The alarm rope is installed on the top of the underground passage and is connected to the motor for driving the recovery rocker to rotate. When the alarm rope is triggered, the motor drives the safety rope recovery rocker to rotate, and the safety rope is recovered to pull out the staff. The four-in-one detection display is also connected to the motor. When the gas concentration exceeds the standard, the motor recovers the safety rope.

[0015] Based on the above-mentioned safety protection and rescue device for limited space operation, the present invention also relates to a method of using a safety protection and rescue device for limited space operation, and the method of using includes:

[0016] a. The rescue support box I and the rescue support box II are fixed to the wall of the shaft by bolts. The left vertical pole, the horizontal pole and the right vertical pole are pulled out to support the rescue support. When the support handle on the horizontal pole is connected to the groove on the top of the right vertical pole, the four-in-one detector, the lighting lamp and the intercom in the well passage also start working synchronously, and transmit and display the data on the four-in-one detection display. After the test is qualified, the external intercom installation broadcasts the test is qualified, and then the confined space operation can be carried out;

[0017] b. The staff wears safety protective clothing, hangs the safety belt on the safety hook and then works. At the same time, the fall arrester is also set. When they reach the underground passage, the intercom in the well can communicate with the ground personnel;

[0018] c. When an emergency occurs, the staff can pull the alarm rope to sound the alarm, and the ground staff can pull the workers out when they receive the alarm; the alarm rope is also connected to the safety rope motor at the crossbar. When the alarm rope is activated, the motor drives the safety rope recovery rocker to move and pull the personnel out; when the alarm rope malfunctions, the alarm rope can be pulled twice in succession to release the malfunction;

[0019] d. The four-in-one detector detects the toxic and harmful gases and oxygen concentration in the working area in real time and displays it on the four-in-one detection display. When the concentration exceeds the standard, the intercom device in the well will alarm to remind the workers to evacuate immediately. At the same time, the four-in-one detection display on the ground will show that the concentration exceeds the standard and remind the ground monitoring personnel of the abnormality to rescue the workers in time. The four-in-one detection display is also interlocked with the safety rope motor. When the gas concentration exceeds the standard, the motor will retract the safety rope.

[0020] The advantages of adopting the technical solution of the present invention are:

[0021] 1. The present invention is suitable for underground limited space operations, especially limited space operations with underground holes and entrances such as sewage wells, cellars, and underground warehouses. The safety protection and rescue device has a simple structure and can be placed in the limited space passage when not in operation, without taking up space. At the same time, it is a device that comes with the limited space, avoiding the situation where there is no detection device before the operation, the operation is carried out without detection, or there is no rescue device in an emergency, resulting in untimely rescue of personnel. It solves the inconvenience of carrying a rescue bracket before the operation, saves the preparation time before the operation, and sets up a walkie-talkie and a lighting lamp in the limited space to reduce the weight of the equipment brought by the operator.

[0022] 2. In the present invention, the hazard factor detection and rescue device in the confined space is interlocked. In case of abnormality, immediate evacuation is carried out, and there is a dual insurance of automatic motor action and manual operation by personnel. Corner pulleys are provided at the corners of the shaft and the underground passage. The safety rope contacts the corner pulleys to prevent the safety rope from rubbing against sharp corners when personnel enter the underground passage for operation, reducing the service life of the safety rope. More importantly, the setting of the corner rollers can reduce the friction coefficient. In case of an emergency, the operator can be pulled out of the well through the safety rope recovery rocker, avoiding the situation where the operator goes deep into the underground passage and the safety rope gets stuck at the corner, which increases the difficulty of the rescue work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0024] Figure 1 It is the front view schematic diagram of the safety protection and rescue device of the present invention arranged in the confined space;

[0025] Figure 2 It is the top view schematic diagram of the safety protection and rescue device of the present invention arranged in the confined space.

[0026] The markings in the above figures are respectively: 1, ladder; 2, rescue support box I; 3, left vertical pole; 4, cross bar; 5, support plate expansion adjustment cross beam; 7, rescue support box II; 8, right vertical pole; 9, four-in-one detection display; 10, external intercom; 11, safety hook. SPECIFIC EMBODIMENTS

[0027] In the present invention, it should be understood that the terms "length"; "width"; "upper"; "lower"; "front"; "rear"; "left"; "right"; "vertical"; "horizontal"; "top"; "bottom"; "inner"; "outer"; "clockwise"; "counterclockwise"; "axial direction"; "plane direction"; "circumferential direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation; be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0028] Such as Figure 1 and Figure 2As shown in the figure, a safety protection and rescue device for confined space operations is characterized in that it includes a rescue support box I 2, a rescue support box II 7, a rescue support, a safety integration mechanism, and a rescue mechanism. The rescue support box I 2 and the rescue support box II 7 are fixedly connected to the well wall. The rescue support is connected to the rescue support box I 2 and the rescue support box II 7. The safety integration mechanism is connected to the underground passage and the rescue support. The rescue mechanism is connected to the rescue support. There is an up-and-down passage ladder 1 on the well wall, and the rescue support box I 2 and the rescue support box II 7 are respectively arranged on the two well walls at a 90-degree angle to the ladder 1.

[0029] The rescue support includes a left vertical rod 3, a cross bar 4, and a right vertical rod 8. The left vertical rod 3 is connected to the rescue support box I 2, the right vertical rod 8 is connected to the rescue support box II 7, and both ends of the cross bar 4 are respectively connected to the tops of the left vertical rod 3 and the right vertical rod 8 to form a door frame structure.

[0030] The rescue support box I 2 and the rescue support box II 7 are provided with cavities for placing the left vertical rod 3, the cross bar 4, and the right vertical rod 8. The cross bar 4 is connected to the left vertical rod 3 through a hinge 6 and can rotate at any angle. When the left vertical rod 3 and the cross bar 4 are nested in the cavity of the rescue support box I 2, the left vertical rod 3 and the cross bar 4 are at a 180-degree angle, and the right vertical rod 8 is nested in the rescue support box II 7.

[0031] The rescue support box I 2 and the rescue support box II 7 are provided with tracks, and pulleys are arranged on the outer walls of the left vertical rod 3 and the right vertical rod 8. The left vertical rod 3 and the right vertical rod 8 are slidably connected to the rescue support box I 2 and the rescue support box II 7 through the cooperation of the pulleys and the tracks. The track pulleys assist in lifting the rescue support from the support box.

[0032] A sealing plate I is provided at one end of the cross bar 4 away from the left vertical rod 3, and a sealing plate II is provided at the top of the right vertical rod 8. The size of the sealing plate I is larger than the inner diameter size of the rescue support box I 2, and the size of the sealing plate II is larger than the inner diameter size of the rescue support box II 7. A support handle 5 is provided at one end of the cross bar 4 away from the left vertical rod 3, and a groove for fixing the support handle 5 is provided at the top of the right vertical rod 8.

[0033] A flip fixing plate 191 is provided at the bottom of the left side pole 3 and the right side pole 8. The flip fixing plate 191 is connected to the outer wall of the left side pole 3 and the right side pole 8 through a hinge, similar to a hinge. When the left side pole 3 and the right side pole 8 are placed in the rescue support box Ⅰ2 and the rescue support box Ⅱ7, the flip fixing plate 191 fits with the outer wall of the left side pole 3 and the right side pole 8. By lifting the support handle 5, the left side pole 3 and the cross bar 4 can be pulled out. When pulled to the maximum position, the flip fixing plate 191 at the bottom of the left side pole 3 is flipped so that the flip fixing plate 191 fits with the solid part of the top of the rescue support box Ⅰ2. There are fixing bolt holes on the fixing plate, which are fixed with the bolts 19 on the top of the rescue support box Ⅰ2. The length and width dimensions of the maximum cross-sectional area of ​​the pole and the cross bar are smaller than the internal dimensions of the support box.

[0034] The right side pole 8 is also pulled to the maximum position, the height of the left and right poles is about 1m, and the length of the cross bar is the diameter or length of the entrance to the limited space. An intercom device and a four-in-one detection display are provided on the left side pole 3 or cross bar. There is a rocker on the side of the cross bar. The cross bar is a hollow channel steel structure with a safety rope and a reel for storing the safety wire rope inside. The cross bar is flipped downward 90 degrees and arranged vertically with the left side pole 3 and the right side pole 8. A right side pole handle 18 is provided on the top of the right side pole 8. The bracket handle 5 on the cross bar cross-supports the right side pole handle 18. There is a groove on the top of the right side pole for fixing the bracket handle 5 on the cross bar. The groove is set on the right side pole handle 18. The bracket handle 5 is clamped in the groove to fix the cross bar. At this time, the rescue bracket is supported and fixed.

[0035] The rescue mechanism includes a safety rope, a safety rope recovery rocker 12, a reel for placing the safety rope, and a safety hook 11. The cross bar is a hollow channel steel structure. The reel is rotatably connected to the middle of the cross bar 4. The safety rope recovery rocker 12 is connected to the reel. The safety rope is wound on the reel. The safety rope passes through the cross bar 4 from the middle position. The safety hook 11 is connected to the safety rope. The safety rope recovery rocker 12 is shaken, the reel rotates, the safety rope is tightened or prevented from loosening, and the safety hook 11 moves upward or downward. The safety rope recovery rocker 12 is provided with a motor for driving the recovery rocker to rotate, and a fall arrester is also connected to the safety hook 11 on the safety rope. Specifically, the safety rope telescopic entrance and exit is below the center of the cross bar, and the fall arrester and the safety hook 11 are connected below. The bottom safety hook can be used to hang the safety belt worn by the operator; the fall arrester can prevent the accidental fall of the personnel when working in the well, and it is self-locking, locking the safety rope and stopping the descent.

[0036] The safety rope is a steel wire rope. A corner roller 13 is set at the corner between the vertical shaft and the underground passage. The corner roller 13 is provided with a groove. The size of the groove is larger than the diameter of the safety rope. The safety rope is clamped in the groove of the corner roller 13. This prevents the safety rope from rubbing against the sharp corner when the personnel enter the underground passage for operation, thereby reducing the service life of the safety rope. More importantly, the setting of the corner roller 13 can reduce the friction coefficient. In the event of an emergency, the operator can be pulled out of the well through the safety rope recovery rocker, avoiding the phenomenon that the operator goes deep into the underground passage and the safety rope is stuck at the corner, which increases the difficulty of the rescue work.

[0037] The safety integrated mechanism includes a four-in-one detector 15, a four-in-one detection display 9, a lighting lamp 16 and an in-well intercom 17. The four-in-one detector 15, the lighting lamp 16 and the in-well intercom 17 are connected to the top of the underground passage 22. The four-in-one detection display 9 is installed on the left vertical pole 3 and is located outside the vertical shaft 21. The four-in-one detection display 9 is connected to the four-in-one detector 15. An external intercom 10 is also provided on the left vertical pole 3, and the external intercom 10 is connected to the in-well intercom 17.

[0038] The safety integrated mechanism includes an alarm rope 14, which is installed at the top of the underground passage. The alarm rope 14 is connected to a motor for driving the recovery rocker to rotate. When the alarm rope 14 is triggered, the motor drives the safety rope recovery rocker 12 to rotate, recover the safety rope and pull the staff out. When an abnormality occurs, the safety rope recovery rocker 12 can also be manually shaken to assist in recovering the safety rope. When the alarm rope malfunctions, the alarm rope can be pulled twice in succession to release the malfunction.

[0039] The four-in-one detection display 9 is also connected to the motor. When the gas concentration exceeds the standard, the motor retracts the safety rope, which plays the role of automatic rescue when the supervisor leaves the post. It also realizes that when the gas in the limited space exceeds the standard, the safety rope cannot be lowered and personnel cannot enter the limited space. Alarm ropes are set on the top of both sides of the underground passage. Due to sudden situations such as suffocation in the well, personnel quickly lose the ability to call for help and self-rescue. When a person is in an emergency, the alarm rope can be pulled to alarm.

[0040] Based on the above-mentioned safety protection and rescue device for confined space operations, the present invention also relates to a method for using the safety protection and rescue device for confined space operations, the method comprising:

[0041] a. The rescue support box I2 and the rescue support box II7 are fixed to the wall of the shaft by bolts. The left vertical pole 3, the horizontal pole 4 and the right vertical pole 8 are pulled out to support the rescue support. When the support handle 5 on the horizontal pole 4 is connected with the groove at the top of the right vertical pole 8, the four-in-one detector 15, the lighting lamp and the intercom in the well in the underground passage also start to work synchronously, and transmit and display the data on the four-in-one detection display 9. After the test is qualified, the external intercom installation (sound and light alarm device) broadcasts the test is qualified, and then the limited space operation can be carried out;

[0042] b. The staff wears safety protective clothing, hangs the safety belt on the safety hook 11 and then works. At the same time, the fall arrester is also set. When reaching the underground passage, the intercom in the well can talk with the ground personnel; the lighting can provide lighting, and the personnel do not need to bring their own lighting equipment. The power supply system in the limited space is 36V safe voltage;

[0043] c. When an emergency occurs, the staff can pull the alarm rope to sound the alarm, and the ground staff can pull the workers out when they receive the alarm; the alarm rope is also connected to the safety rope motor at the crossbar. When the alarm rope is activated, the motor drives the safety rope recovery rocker 12 to activate and pull the personnel out; when the alarm rope malfunctions, the alarm rope can be pulled twice in succession to release the malfunction;

[0044] d. The four-in-one detector detects the toxic and harmful gases and oxygen concentration related data in the working area in real time and displays it on the four-in-one detection display 9. When the concentration exceeds the standard, the intercom device in the well will alarm to remind the operating personnel to evacuate immediately. At the same time, the four-in-one detection display 9 on the ground will display the excess and remind the ground monitoring personnel of the abnormality, so as to rescue the operating personnel in time; the four-in-one detection display 9 is also interlocked with the safety rope motor. When the gas concentration exceeds the standard, the motor recycles the safety rope, which plays the role of the monitoring personnel leaving the post and the equipment performing automatic rescue. It also realizes that when the gas in the confined space exceeds the standard, the safety rope cannot be lowered and personnel cannot enter the confined space.

[0045] The present invention is suitable for underground limited space operations, especially limited space operations with underground holes and entrances such as sewage wells, cellars, and underground warehouses. The safety protection and rescue device has a simple structure and can be placed in a limited space passage when not in operation, without taking up space. At the same time, it is a device that comes with the limited space, avoiding the situation where there is no detection device before the operation, the operation is carried out without detection, or there is no rescue device in an emergency, resulting in untimely rescue of personnel. It solves the inconvenience of carrying a rescue bracket before the operation, saves the preparation time before the operation, and sets a walkie-talkie and a lighting lamp in the limited space to reduce the weight of the equipment brought by the operator.

[0046] In the present invention, the hazard factor detection and rescue device in the confined space is interlocked, and in case of abnormality, immediate evacuation is carried out, with the motor automatically operating and manual operation of personnel as a double insurance; corner pulleys are provided at the corners of the shaft and the underground passage, and the safety rope contacts the corner pulleys, preventing the safety rope from rubbing against sharp corners when personnel enter the underground passage for operation, and reducing the service life of the safety rope. More importantly, the setting of the corner rollers 13 can reduce the friction coefficient. In case of an emergency, the operator can be pulled out of the well through the safety rope recovery rocker, avoiding the situation where the operator enters deep into the underground passage and the safety rope gets stuck at the corner, which increases the difficulty of the rescue work. The above has described the present invention by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A safety protection and rescue device for working in a confined space, characterized in that: it includes a rescue support box I (2), a rescue support box II (7), a rescue support, a safety integration mechanism and a rescue mechanism. The rescue support box I (2) and the rescue support box II (7) are fixedly connected to the well wall. The rescue support is connected to the rescue support box I (2) and the rescue support box II (7). The safety integration mechanism is connected to the underground passage and the rescue support. The rescue mechanism is connected to the rescue support; the rescue support includes a left vertical rod (3), a cross bar (4) and a right vertical rod (8). The left vertical rod (3) is connected to the rescue support box I (2), the right vertical rod (8) is connected to the rescue support box II (7), and both ends of the cross bar (4) are respectively connected to the tops of the left vertical rod (3) and the right vertical rod (8) to form a door frame structure; cavities for placing the left vertical rod (3), the cross bar (4) and the right vertical rod (8) are provided in the rescue support box I (2) and the rescue support box II (7). The cross bar (4) is connected to the left vertical rod (3) by a hinge. When the left vertical rod (3) and the cross bar (4) are nested in the cavity of the rescue support box I (2), the left vertical rod (3) and the cross bar (4) are at 180 degrees. The right vertical rod (8) is nested in the rescue support box II (7); a support handle (5) is provided at one end of the cross bar (4) away from the left vertical rod (3), and a groove for fixing the support handle (5) is provided at the top of the right vertical rod (8); turning fixing plates (191) are provided at the bottoms of the left vertical rod (3) and the right vertical rod (8), and the turning fixing plates (191) are connected to the outer walls of the left vertical rod (3) and the right vertical rod (8) by hinges; by lifting the support handle (5), the left vertical rod (3) and the cross bar (4) are pulled out. When pulled to the maximum position, the turning fixing plate (191) at the bottom of the left vertical rod (3) is turned over so that the turning fixing plate (191) fits against the solid part at the top of the rescue support box I (2). There are fixing bolt holes on the fixing plate, which are fixed to the bolts (19) at the top of the rescue support box I (2); the right vertical rod (8) is also pulled to the maximum position, and the support handle (5) is clamped in the groove to fix the cross bar. At this time, the rescue support is supported and fixed; the rescue mechanism includes a safety rope, a safety rope recovery rocker (12), a safety hook (11) and a reel for placing the safety rope; a corner roller (13) is provided at the corner of the shaft and the underground passage. A groove is provided on the corner roller (13), and the size of the groove is larger than the diameter of the safety rope. The safety rope is clamped in the groove of the corner roller (13) to prevent the safety rope from rubbing against the sharp corner when personnel enter the underground passage for work; the safety integration mechanism includes an alarm rope (14), a four-in-one detector (15), a four-in-one detection display (9), a lighting lamp (16) and an in-well intercom (17).

2. A safety protection and rescue device for working in a confined space according to claim 1, characterized in that: an up-and-down passage ladder (1) is provided on the well wall, and a rescue support box I (2) and a rescue support box II (7) are respectively provided on the two well walls at 90 degrees to the ladder (1).

3. The safety protection and rescue device for confined space operation according to claim 2, characterized in that: rails are provided in the rescue support box I (2) and the rescue support box II (7), pulleys are provided on the outer walls of the left vertical rod (3) and the right vertical rod (8), and the left vertical rod (3) and the right vertical rod (8) are slidably connected to the rescue support box I (2) and the rescue support box II (7) through the cooperation of the pulleys and the rails.

4. The safety protection and rescue device for confined space operation according to claim 3, characterized in that: the safety rope is a steel wire rope, the cross bar is a channel steel hollow structure, and a safety rope and a reel for storing the safety steel wire rope are arranged inside. The safety rope recovery rocker (12) is connected to the reel, the safety rope is wound on the reel, the safety rope passes through the cross bar (4) from the middle position of the cross bar (4), the safety hook (11) is connected to the safety rope, and by shaking the safety rope recovery rocker (12), the reel rotates, the safety rope is tightened or loosened, and the safety hook (11) moves up or down.

5. The safety protection and rescue device for confined space operation according to claim 3, characterized in that: a motor for driving the recovery rocker to rotate is provided in the safety rope recovery rocker (12), and an anti-falling device is also connected to the safety hook (11) on the safety rope.

6. The safety protection and rescue device for confined space operation according to claim 5, characterized in that: the four-in-one detector (15), the lighting lamp (16) and the in-well intercom (17) are connected to the top of the underground passage (22), the four-in-one detection display (9) is installed on the left vertical rod (3) and is located outside the vertical shaft (21), the four-in-one detection display (9) is connected to the four-in-one detector (15), and an external intercom (10) is also provided on the left vertical rod (3), and the external intercom (10) is connected to the in-well intercom (17).

7. The safety protection and rescue device for confined space operation according to claim 6, characterized in that: the alarm rope (14) is installed on the top of the underground passage, the alarm rope (14) is connected to the motor for driving the recovery rocker to rotate, when the alarm rope (14) is triggered, the motor drives the safety rope recovery rocker (12) to rotate, and the safety rope is recovered to pull out the staff, and the four-in-one detection display (9) is also connected to the motor, when the gas concentration exceeds the standard, the motor recovers the safety rope.

8. A method for using a safety protection and rescue device for confined space operation, characterized in that: based on the safety protection and rescue device for confined space operation according to claim 7, the method for use includes: a. The rescue support box I (2) and the rescue support box II (7) are fixed to the wall of the shaft by bolts. The left vertical pole (3), the horizontal pole (4) and the right vertical pole (8) are pulled out to support the rescue support. When the support handle (5) on the horizontal pole (4) is connected to the groove on the top of the right vertical pole (8), the four-in-one detector (15), the lighting lamp and the intercom in the well passage also start to work synchronously, and transmit and display the data on the four-in-one detection display (9). After the test is qualified, the external intercom device broadcasts the test is qualified, and then the confined space operation can be carried out; b. The worker puts on safety protective clothing, hangs the safety belt on the safety hook (11) and then starts working. The worker also sets up the fall arrester and reaches the underground passage. The worker uses the intercom in the well to communicate with the ground personnel. c. When an emergency occurs, the staff pulls the alarm rope to sound the alarm, and the ground staff pulls the staff out upon receiving the alarm; the alarm rope is also connected to the safety rope motor at the crossbar, and when the alarm rope is activated, the motor drives the safety rope recovery rocker (12) to activate and pull the staff out; when the alarm rope malfunctions, the alarm rope is pulled twice in succession to release the malfunction; d. The four-in-one detector detects the toxic and harmful gases and oxygen concentration in the working area in real time and displays it on the four-in-one detection display (9). When the concentration exceeds the standard, the intercom device in the well will alarm to remind the operating personnel to evacuate immediately. At the same time, the four-in-one detection display (9) on the ground will display the exceeding standard and remind the ground monitoring personnel of the abnormality, so as to rescue the operating personnel in time. The four-in-one detection display (9) is also interlocked with the safety rope motor. When the gas concentration exceeds the standard, the motor will retract the safety rope.

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