A tunnel support cabin with built-in oxygen supply device

Abstract

The present invention relates to the technical field of support cabin equipment, and specifically discloses a tunnel support cabin with a built-in oxygen supply device, comprising a support cabin main body and a plurality of oxygen absorption mechanisms, wherein the support cabin main body is a rectangular box structure, and the plurality of oxygen absorption mechanisms are detachably arranged in the support cabin main body, wherein the oxygen absorption mechanism comprises a main structure, an assembly structure and a bearing structure, wherein the assembly structure is detachably arranged on the main structure, and the bearing structure is fixedly arranged in the main structure. The present invention has a small volume, is easy to carry and move, can save oxygen consumption, and avoid waste caused by excessive loss, can detect internal oxygen content, air pressure, and temperature and humidity data, and effectively set oxygen supply requirements for different regions, and when staff members suffer from hypoxia and altitude sickness, they can sit in the equipment to absorb oxygen and rest through the bearing structure, and in severe cases, the bearing structure can assist the staff members to change from a sitting state to a lying state, which is more conducive to rest and recovery, and no manual lifting is required.

Description

Technical Field

[0001] The invention relates to the technical field of support cabin equipment, and in particular to a tunnel support cabin with a built-in oxygen supply device. Background Art

[0002] A tunnel construction support cabin is a device used to ensure the safety of tunnel construction workers. It is usually a closed cabin, mostly in the form of a container, which can provide a safe working environment to prevent construction workers from being harmed by dangerous factors in the tunnel, such as collapse, gas explosion, fire, etc., and the support cabin has a ventilation system to ensure the oxygen supply in the tunnel project; however, in some special areas, such as plateaus and long tunnels, some workers will suffer from altitude sickness and hypoxia after working for a long time, and then the personnel need to breathe oxygen after working for a certain period of time, and even under special conditions, the workers need to wear oxygen to work. Therefore, a tunnel support cabin with a built-in oxygen supply device is designed first. Summary of the invention

[0003] The object of the present invention is to provide a tunnel support cabin with a built-in oxygen supply device to solve the problems raised in the above background technology.

[0004] In order to solve the above-mentioned problem, the present invention provides the following technical solutions: a tunnel support cabin with a built-in oxygen supply device, comprising a support cabin main body and a plurality of oxygen absorption mechanisms, wherein the support cabin main body is a rectangular box structure, and the plurality of oxygen absorption mechanisms are detachably arranged in the support cabin main body, wherein the oxygen absorption mechanism comprises a main structure, an assembly structure and a bearing structure, wherein the assembly structure is detachably arranged on the main structure, and the bearing structure is fixedly arranged in the main structure.

[0005] Preferably, the main structure includes an oxygen inhalation chamber, an oxygen supply valve, an illuminating lamp, a pair of fans, a first door body, a second door body, a pair of lock frames, a lock rod and a pair of locking bolts; the oxygen inhalation chamber is a rectangular box body without a rear side wall, and an inlet and outlet are arranged in the middle of the bottom end of the front side wall of the oxygen inhalation chamber, a touch screen is arranged on the right side wall of the oxygen inhalation chamber, a magnetic lock is arranged along the middle of the right side wall of the front side wall of the oxygen inhalation chamber, one end of the oxygen supply valve is fixedly passed through the middle of the upper wall of the oxygen inhalation chamber, the illuminating lamp is fixedly arranged on the front side wall of the oxygen inhalation chamber, and near the top end, a pair of fans are fixedly embedded in the bottom of the oxygen inhalation chamber respectively. The first door body is movably arranged on the left side wall of the oxygen inhalation chamber, and a glass window is embedded in the middle of the first door body. The second door body is movably connected to the lower wall of the left end of the first door body through a first pin shaft, and the second door body can be flipped over to match the first door body. One end of a pair of lock frames are symmetrically arranged on the front side wall of the other end of the second door body and the front side wall of the right end of the first door body. One end of the locking rod is movably passed through the other end of the locking rod, and a lifting claw is arranged on the other end of the locking rod. A pair of locking bolts are movably screwed on the front side wall of the other end of the locking frame and fit with the locking rod.

[0006] Preferably, the assembly structure comprises a rear plate, a supporting plate, a pair of limiting tubes, a pair of tightening bolts, a sleeve, an electromagnetic flow valve, an oxygen detector, an air pressure detector and a temperature and humidity detector; the rear plate is detachably buckled on the rear side of the oxygen inhalation chamber, one end of the supporting plate is fixedly arranged on the middle part of the rear plate near the bottom end, a pair of limiting tubes are respectively fixedly passed through the rear plate, and are respectively located on the front and rear side walls of the rear plate and are located above the supporting plate, a pair of limiting tubes are both rectangular tube bodies, a pair of tightening bolts are respectively movably screwed on the upper wall of the limiting tubes, the sleeve is a U-shaped structure, both ends of the sleeve are respectively movably passed through the limiting tubes and are fixed by tightening bolts, the electromagnetic flow valve is fixedly arranged on the rear plate, and one end of the electromagnetic flow valve is connected to the oxygen inhalation chamber through a first pipe, a hose pipe is arranged on the other end of the electromagnetic flow valve, the oxygen detector is fixedly arranged on the rear plate near the top end and is located in the oxygen inhalation chamber, the air pressure detector is fixedly arranged on the right side of the oxygen detector, and the temperature and humidity detector is fixedly arranged on the right side of the air pressure detector.

[0007] Preferably, the bearing structure includes a pair of electric slide rails, a pair of driving arms, a back plate, a first hydraulic cylinder, a seat plate, a pair of gears, a pair of second hydraulic cylinders and a pair of racks; the pair of electric slide rails are respectively vertically arranged on the lower wall of the oxygen inhalation chamber, and are symmetrical near the rear end; one end of a pair of driving arms is respectively fixedly arranged on the electric slide rails and can be lifted and lowered; a displacement groove is arranged in the middle of the other end of the pair of driving arms; the left and right side walls of one end of the back plate are respectively movably arranged between the driving arms by means of a second pin shaft, and the second pin shaft movably passes through the displacement groove; the bottom end of the back plate is located above the lower wall of the oxygen inhalation chamber; a seat groove is arranged near the middle of the other end of the back plate; a pair of A driving groove, and the driving grooves respectively penetrate the seat groove and are close to the left and right sides of the seat groove. One end of the first hydraulic cylinder is movably arranged on the lower wall of the oxygen inhalation chamber and is located on the rear end center line. The telescopic end of the first hydraulic cylinder is tilted and movably connected to the rear side wall of the backrest plate and is located above the seat groove. The left and right side walls of one end of the seat plate are respectively movably embedded in the seat groove through the third pin shaft. A pair of the gears are respectively fixedly mounted on the third pin shafts on both sides of the seat plate and are located in the seat groove. A pair of the second hydraulic cylinders are respectively symmetrically arranged on the rear side wall of the backrest plate and close to the top. A pair of the racks are respectively movably embedded in the driving grooves, and one end of the racks is respectively connected to the telescopic end of the second hydraulic cylinder, and a pair of the racks are respectively engaged with the gears.

[0008] Preferably, the seat plate can be rotated 90 degrees forward and 90 degrees reverse by means of the meshing transmission of the rack and the gear.

[0009] Preferably, the top end of the backrest can be flipped downward to a horizontal state.

[0010] Preferably, the backing plate can pass through the second door body in a horizontal state and is opposite to the middle part of the fan.

[0011] Preferably, an oxygen tank can be installed on the support plate and fixed by a sleeve frame.

[0012] The tunnel support cabin with a built-in oxygen supply device proposed by the present invention has the following beneficial effects:

[0013] 1. The present invention has a small size, is easy to carry and move, and does not require manual movement to enter the support cabin for rest.

[0014] 2. It can save oxygen consumption and avoid waste caused by excessive loss.

[0015] 3. It can detect the internal oxygen content, air pressure, temperature and humidity data, and effectively set the oxygen supply demand for different regions.

[0016] 4. Workers who suffer from hypoxia and altitude sickness can sit in the equipment to breathe oxygen and rest through the support structure. In severe cases, the support structure can help them change from sitting to lying flat, which is more conducive to rest and recovery, and no manual lifting is required.

[0017] 5. In the event of a landslide, it can provide protection for personnel who do not have time to enter the container-type support cabin, and it can also form secondary protection after being placed in the support cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the deployment of the present invention.

[0019] Figure 2 It is a schematic diagram of the assembly structure of the oxygen absorption mechanism of the present invention.

[0020] Figure 3 It is a schematic diagram of the split structure of the main structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the disassembly structure of the assembly structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the split structure of the bearing structure of the present invention.

[0023] Figure 6 It is a schematic diagram of the first assembly structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the second assembly structure of the present invention.

[0025] Figure 8 For the present invention Figure 3 A partial enlarged view of point A in the figure.

[0026] Fig. 9 For the present invention Figure 5 A partial enlarged view of point B in FIG.

[0027] Fig.10 For the present invention Figure 5 A partial enlarged view of point C in the figure.

[0028] In the figure: 1. Support cabin body; 2. Main structure; 21. Oxygen breathing chamber; 22. Oxygen supply valve; 23. Lighting lamp; 24. Fan; 25. First door body; 26. Second door body; 27. Locking frame; 28. Locking rod; 29. ​​Locking bolt; 3. Assembly structure; 31. Back plate; 32. Support plate; 33. Limiting pipe; 34. Tightening bolt; 35. Sleeve; 36. Electromagnetic flow valve; 37. Oxygen detector; 38. Air pressure detector; 39. Temperature and humidity detector; 4. Bearing structure; 41. Electric slide rail; 42. Driving arm; 43. Back plate; 44. First hydraulic cylinder; 45. Seat plate; 46. Gear; 47. Second hydraulic cylinder; 48. Rack; 5. Drive groove; 6. Seat groove. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-10 The present invention provides a technical solution: a tunnel support cabin with a built-in oxygen supply device, including a support cabin main body 1 and a plurality of oxygen absorption mechanisms, the support cabin main body 1 is a rectangular box structure, the plurality of oxygen absorption mechanisms are detachably arranged in the support cabin main body 1, wherein the oxygen absorption mechanism includes a main structure 2, an assembly structure 3 and a bearing structure 4, the assembly structure 3 is detachably arranged on the main structure 2, and the bearing structure 4 is fixedly arranged in the main structure 2; the support cabin main body 1 is an existing container-type structure, which is relatively large in size and can carry a plurality of oxygen absorption mechanisms for placement therein.

[0031] As a further solution of the present invention, the main structure 2 includes an oxygen inhalation chamber 21, an oxygen supply valve 22, an illuminating lamp 23, a pair of fans 24, a first door body 25, a second door body 26, a pair of lock frames 27, a lock rod 28 and a pair of locking bolts 29; the oxygen inhalation chamber 21 is a rectangular box without a rear side wall, and an inlet and outlet are arranged in the middle of the bottom end of the front side wall of the oxygen inhalation chamber 21, a touch screen is arranged on the right side wall of the oxygen inhalation chamber 21, and a magnetic lock is arranged along the middle of the right side wall of the front side wall of the oxygen inhalation chamber 21, one end of the oxygen supply valve 22 is fixedly passed through the middle of the upper wall of the oxygen inhalation chamber 21, the illuminating lamp 23 is fixedly arranged on the inner front side wall of the oxygen inhalation chamber 21, and near the top part, a pair of fans 24 are fixedly embedded in the left and right side walls of the bottom end of the oxygen inhalation chamber 21, one end of the first door body 25 is movably arranged on the left side wall of the oxygen inhalation chamber 21, and a glass window is embedded in the middle of the first door body 25, and the second door body 26 is fixedly embedded in the left and right side walls of the bottom end of the oxygen inhalation chamber 21. One end is movably connected to the lower wall of the left end of the first door body 25 through a first pin shaft, and the second door body 26 can be turned over to fit with the first door body 25, one end of a pair of lock frames 27 are symmetrically arranged on the front side wall of the other end of the second door body 26 and the front side wall of the right end of the first door body 25, one end of a lock rod 28 is movably passed through the other end of the lock frame 27, and a lifting claw is arranged on the other end of the lock rod 28, a pair of locking bolts 29 are movably screwed into the front side wall of the other end of the lock frame 27, and fit with the lock rod 28; through the locking bolts 29 on the lock frame 27, the first door body 25 and the second door body 26 can be relatively fixed or opened alternately with the help of the lock rod 28, the air circulation in the oxygen inhalation chamber 21 can be promoted by the fan 24, the oxygen flowing out can be replenished in the main body 1 of the guarantee cabin, and can be relatively connected in series through the oxygen supply valve 22, and can be connected to the oxygen supply equipment with the help of pipelines.

[0032] As a further solution of the present invention, the assembly structure 3 includes a rear plate 31, a support plate 32, a pair of limiting tubes 33, a pair of tightening bolts 34, a sleeve 35, an electromagnetic flow valve 36, an oxygen detector 37, an air pressure detector 38 and a temperature and humidity detector 39; the rear plate 31 can be detachably buckled on the rear side of the oxygen inhalation chamber 21, one end of the support plate 32 is fixedly arranged on the middle part of the rear plate 31 near the bottom end, a pair of limiting tubes 33 are respectively fixed and penetrate the rear plate 31, and are respectively located on the front and rear side walls of the rear plate 31 and above the support plate 32, a pair of limiting tubes 33 are both rectangular tube bodies, a pair of tightening bolts 34 are respectively movably screwed on the upper walls of the limiting tubes 33, the sleeve 35 is a U-shaped structure, and the two ends of the sleeve 35 are respectively movably penetrate the limiting tubes 33 and are fixed by the tightening bolts 34, the electromagnetic flow valve 36 is fixedly arranged on the rear plate 31, and one end of it is connected with the oxygen absorption chamber 21 through the first pipe, and the other end of the electromagnetic flow valve 36 is provided with a hose pipe, the oxygen detector 37 is fixedly arranged on the rear plate 31 near the top and is located in the oxygen absorption chamber 21, the air pressure detector 38 is fixedly arranged on the right side of the oxygen detector 37, and the temperature and humidity detector 39 is fixedly arranged on the right side of the air pressure detector 38; the detachable rear plate 31 is designed to facilitate assembly; the corresponding oxygen tank can be installed through the support plate 32 and the sleeve frame 35 for single oxygen supply, the flow rate of the oxygen tank discharged into the oxygen absorption chamber 21 can be controlled by the electromagnetic flow valve 36, the oxygen concentration in the oxygen absorption chamber 21 is detected by oxygen, the internal air pressure is detected by the air pressure detector 38, and the temperature and humidity are detected by the temperature and humidity detector 39.

[0033] As a further solution of the present invention, the bearing structure 4 includes a pair of electric slide rails 41, a pair of driving arms 42, a support plate 43, a first hydraulic cylinder 44, a seat plate 45, a pair of gears 46, a pair of second hydraulic cylinders 47 and a pair of racks 48; the pair of electric slide rails 41 are respectively vertically arranged on the lower wall of the oxygen inhalation chamber 21, and are symmetrical near the rear end, one end of the pair of driving arms 42 is respectively fixedly arranged on the electric slide rails 41, and can be lifted and moved, the middle part of the other end of the pair of driving arms 42 is provided with a displacement groove, and the left and right side walls of one end of the support plate 43 are respectively supported by the second pin The shaft is movably arranged between the driving arms 42, and the second pin shaft movably penetrates the displacement groove. The bottom end of the support plate 43 is located above the lower wall of the oxygen absorption chamber 21. The support plate 43 is provided with a seat groove 6 near the middle of the other end. A pair of driving grooves 5 are symmetrically arranged on the rear side wall of the support plate 43, and the driving grooves 5 respectively penetrate the seat groove 6 and are close to the left and right sides of the seat groove 6. One end of the first hydraulic cylinder 44 is movably arranged on the lower wall of the oxygen absorption chamber 21 and is located on the rear center line. The telescopic end of the first hydraulic cylinder 44 is tilted and movably connected to the rear side wall of the support plate 43 and is located above the seat groove 6. The seat plate 45 The left and right side walls at one end are respectively movably embedded in the seat groove 6 through the third pin shaft, a pair of gears 46 are respectively fixedly mounted on the third pin shafts on both sides of the seat plate 45 and are located in the seat groove 6, a pair of second hydraulic cylinders 47 are respectively symmetrically arranged on the rear side walls of the back plate 43 and close to the top, a pair of racks 48 are respectively movably embedded in the driving groove 5, and one end of the racks 48 is respectively connected to the telescopic end of the second hydraulic cylinder 47, and the pair of racks 48 are respectively engaged with the gears 46; the second hydraulic cylinder 47 drives the racks 48 to rise and fall, and the gears 46 can be driven to drive the seat plate 45 to transmit or Reversal: The forward rotation of the seat plate 45 can be used for people to sit and lean on the backrest plate 43 to rest and breathe oxygen. The reversal of the seat plate 45 can be used for auxiliary support when the backrest plate 43 is in a horizontal state. By driving the first hydraulic cylinder 44 to extend and the electric slide rail 41 to drive the driving arm 42 to descend and drive the backrest plate 43 to flip, the backrest plate 43 can be flipped to a horizontal state, and the second door body 26 needs to be opened to pass through the oxygen breathing chamber 21, and then the worker lies flat on the backrest plate 43, and the head passes through the bottom of the first door body 25 to enter the oxygen breathing chamber 21 to breathe oxygen and rest, which also reduces the rapid loss of oxygen.

[0034] As a further solution of the present invention, the seat board 45 can be rotated 90 degrees forward and 90 degrees reverse by means of the meshing transmission of the rack 48 and the gear 46, and is used for sitting and supporting the human body and auxiliary supporting the backrest board 43 respectively.

[0035] As a further solution of the present invention, the top of the backrest 43 can be flipped down to a horizontal state to provide more comfortable resting conditions for patients with severe hypoxia according to design requirements.

[0036] As a further solution of the present invention, the backrest 43 can pass through the second door body 26 in a horizontal state and is opposite to the middle of the fan 24. For design requirements, it can help blow air to cool down when people lie flat and take oxygen rest.

[0037] As a further solution of the present invention, an oxygen tank can be installed on the support plate 32 and fixed by the sleeve frame 35, which is used for design requirements to realize the use of the oxygen absorption chamber 21 when the oxygen absorption chamber 21 is placed alone in the tunnel project.

[0038] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows:

[0039] When in use, after the main body 1 of the support cabin is placed in the tunnel, a plurality of oxygen inhalation mechanisms can be arranged and placed in the main body 1 of the support cabin, which can be used to save oxygen and to use the oxygen inhalation chamber 21 lying flat. At the same time, it can effectively provide secondary protection in the event of a landslide, and promote the preservation of oxygen and the effective use of oxygen. At this time, the oxygen inhalation mechanism can be connected in series with the oxygen supply device through a pipeline to connect the oxygen supply valve 22. The oxygen inhalation mechanism can also be placed in the tunnel project, that is, located outside the main body 1 of the support cabin. It is small in size and easy to carry. It can be moved with the entry of the project. Moreover, when personnel need oxygen inhalation, they can enter the oxygen inhalation chamber 21 in time without having to walk far to enter the main body 1 of the support cabin.

[0040] When the oxygen inhalation mechanism is used, the bottom of the existing oxygen tank can be placed on the support plate 32 in the assembly structure 3, and the sleeve 35 can be clamped on the oxygen tank, and the two ends of the sleeve 35 can be inserted into the limiting tube 33 and fixed by the tightening bolts 34, and at the same time, the hose pipeline on the electromagnetic flow valve 36 is connected to the oxygen tank;

[0041] When in use, the personnel can enter the oxygen inhalation chamber 21 in the main structure 2 by opening the first door body 25, and the second door body 26 is opened synchronously by means of the connection between the locking rod 28 and the locking frame 27, and illuminate the oxygen inhalation chamber 21 through the lighting lamp 23; then the second hydraulic cylinder 47 in the bearing structure 4 is driven to extend and drive, so that the rack 48 can be driven to limit and descend in the driving groove 5, and the seat plate 45 is driven to rotate 90 degrees in the seat groove 6 at the bottom of the back plate 43 through the meshing transmission of the rack 48 and the gear 46. The seat plate 45 is relatively vertical to the back plate 43, and the person can sit on the seat plate 45 and lean on the back plate 43 to rest; and the oxygen inhalation chamber 21 is used for oxygen supply through the connection between the oxygen supply valve 22 and the oxygen supply equipment, or oxygen is supplied through an oxygen tank, and the flow rate of oxygen supply is controlled through the electromagnetic flow valve 36;

[0042] When in use, the oxygen detector 37 on the rear panel 31 monitors the internal oxygen content, the air pressure detector 38 detects the internal air pressure, and the temperature and humidity detector 39 detects the temperature and humidity of the internal switch, and is displayed and controlled on the touch screen at the same time;

[0043] When a person faints or has severe altitude sickness or hypoxia, the locking bolt 29 can be rotated to disengage the locking rod 28 from the locking frame 27, and then the person enters the oxygen inhalation chamber 21 and sits on the seat 45, and drives the fan 24 in the main structure 2 to promote the circulation inside the oxygen inhalation chamber 21; at the same time, the electric slide rail 41 and the first hydraulic cylinder 44 are controlled to drive, and as the driving arm 42 descends and the first hydraulic cylinder 44 extends, the back plate 43 is driven to flip to a horizontal state, and one end of the back plate 43 will pass through the second door body 26 and be located outside the oxygen inhalation chamber 21; at the same time, the second hydraulic cylinder 47 is controlled to shrink and drive, driving the seat plate 45 to reverse to the bottom of the back plate 43 for auxiliary support vertically, at this time, the person lies flat on the back plate 43, the first door body 25 can be closed, and the second door body 26 is opened, the head of the human body passes through the bottom of the first door body 25 and is located in the oxygen inhalation chamber 21 for oxygen inhalation, and the air blown by the fan 24 will be blown to the face.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel support cabin with a built-in oxygen supply device, characterized in that: The invention comprises a support cabin body (1) and a plurality of oxygen absorption mechanisms, wherein the support cabin body (1) is a rectangular box structure, and the plurality of oxygen absorption mechanisms are detachably arranged in the support cabin body (1), wherein the oxygen absorption mechanisms comprise a main structure (2), an assembly structure (3) and a bearing structure (4), wherein the assembly structure (3) is detachably arranged on the main structure (2), and the bearing structure (4) is fixedly arranged in the main structure (2); The main structure (2) comprises an oxygen inhalation chamber (21), an oxygen supply valve (22), an illuminating lamp (23), a pair of fans (24), a first door body (25), a second door body (26), a pair of locking frames (27), a locking rod (28), and a pair of locking bolts (29); The oxygen inhalation chamber (21) is a rectangular box without a rear side wall, and an inlet and outlet are arranged in the middle of the bottom end of the front side wall of the oxygen inhalation chamber (21), a touch screen is arranged on the right side wall of the oxygen inhalation chamber (21), and a magnetic lock is arranged along the middle of the right side wall of the front side wall of the oxygen inhalation chamber (21), one end of the oxygen supply valve (22) is fixedly passed through the middle of the upper wall of the oxygen inhalation chamber (21), the lighting lamp (23) is fixedly arranged on the front side wall of the oxygen inhalation chamber (21), and close to the top end, a pair of fans (24) are respectively fixedly embedded in the left and right side walls of the bottom end of the oxygen inhalation chamber (21), one end of the first door body (25) is movably arranged on the left side wall of the oxygen inhalation chamber (21), and the first door body (25) is fixedly arranged on the left side wall of the oxygen inhalation chamber (21), and the first door body (25) is fixedly arranged on the left side wall of the oxygen inhalation chamber (21). A glass window is embedded in the middle of a door body (25); one end of the second door body (26) is movably connected to the lower wall of the left end of the first door body (25) through a first pin shaft, and the second door body (26) can be turned over to fit with the first door body (25); one end of a pair of lock frames (27) are symmetrically arranged on the front side wall of the other end of the second door body (26) and the front side wall of the right end of the first door body (25); one end of the lock rod (28) is movably passed through the other end of the lock frame (27), and a lifting claw is arranged on the other end of the lock rod (28); a pair of locking bolts (29) are movably screwed into the front side wall of the other end of the lock frame (27) and fit with the lock rod (28); The bearing structure (4) comprises a pair of electric slide rails (41), a pair of driving arms (42), a backing plate (43), a first hydraulic cylinder (44), a seat plate (45), a pair of gears (46), a pair of second hydraulic cylinders (47) and a pair of racks (48); The pair of electric slide rails (41) are respectively vertically arranged on the lower wall of the oxygen inhalation chamber (21) and are symmetrical near the rear end. One end of the pair of driving arms (42) is respectively fixedly arranged on the electric slide rails (41) and can be lifted and lowered. The middle part of the other end of the pair of driving arms (42) is provided with a displacement groove. The left and right side walls of one end of the support plate (43) are respectively movably arranged between the driving arms (42) by means of a second pin shaft, and the second pin shaft movably penetrates the displacement groove. The bottom end of the support plate (43) is located above the lower wall of the oxygen inhalation chamber (21). The support plate (43) is provided with a seat groove (6) near the middle part of the other end. The rear side wall of the support plate (43) is symmetrically provided with a pair of driving grooves (5), and the driving grooves (5) respectively penetrate the seat groove (6) and are close to the left and right sides of the seat groove (6). The first liquid One end of the pressure cylinder (44) is movably arranged on the lower wall of the oxygen inhalation chamber (21) and is located on the rear center line. The telescopic end of the first hydraulic cylinder (44) is tilted and movably connected to the rear side wall of the back plate (43) and is located above the seat groove (6). The left and right side walls of one end of the seat plate (45) are respectively movably embedded in the seat groove (6) through a third pin shaft. A pair of gears (46) are respectively fixedly mounted on the third pin shafts on both sides of the seat plate (45) and are located in the seat groove (6). A pair of the second hydraulic cylinders (47) are respectively symmetrically arranged on the rear side wall of the back plate (43) and close to the top end. A pair of racks (48) are respectively movably embedded in the driving groove (5), and one end of the racks (48) is respectively connected to the telescopic end of the second hydraulic cylinder (47). The pair of racks (48) are respectively engaged with the gears (46).

2. A tunnel support cabin with a built-in oxygen supply device according to claim 1, characterized in that: The assembly structure (3) comprises a rear plate (31), a support plate (32), a pair of limit tubes (33), a pair of tightening bolts (34), a sleeve frame (35), an electromagnetic flow valve (36), an oxygen detector (37), an air pressure detector (38) and a temperature and humidity detector (39); The rear plate (31) is detachably buckled on the rear side of the oxygen inhalation chamber (21); one end of the support plate (32) is fixedly arranged on the middle part of the rear plate (31) near the bottom end; a pair of limit tubes (33) are respectively fixedly passed through the rear plate (31) and are respectively located on the front and rear side walls of the rear plate (31) and above the support plate (32); the pair of limit tubes (33) are both rectangular tubes; a pair of tightening bolts (34) are respectively movably screwed on the upper walls of the limit tubes (33); the sleeve frame (35) is a U-shaped structure; the two ends of the sleeve frame (35) are respectively movably passed through The limiting tube (33) is fixed by a tightening bolt (34), the electromagnetic flow valve (36) is fixedly arranged on the rear plate (31), and one end of the electromagnetic flow valve (36) is connected to the oxygen absorption chamber (21) through a first pipeline, and the other end of the electromagnetic flow valve (36) is provided with a hose pipeline, the oxygen detector (37) is fixedly arranged on the rear plate (31) near the top and located in the oxygen absorption chamber (21), the air pressure detector (38) is fixedly arranged on the right side of the oxygen detector (37), and the temperature and humidity detector (39) is fixedly arranged on the right side of the air pressure detector (38).

3. A tunnel support cabin with a built-in oxygen supply device according to claim 2, characterized in that: The seat plate (45) can be rotated 90 degrees forward and 90 degrees reverse by means of meshing transmission between the rack (48) and the gear (46).

4. A tunnel support cabin with a built-in oxygen supply device according to claim 3, characterized in that: The top end of the backing plate (43) can be flipped downward to a horizontal state.

5. A tunnel support cabin with a built-in oxygen supply device according to claim 4, characterized in that: The support plate (43) is capable of passing through the second door body (26) in a horizontal state and is opposite to the middle part of the fan (24).

6. A tunnel support cabin with a built-in oxygen supply device according to claim 5, characterized in that: An oxygen tank can be mounted on the support plate (32) and fixed via a sleeve frame (35).

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