High-strength safety guarantee cabin for tunnel constructors

Abstract

The invention discloses a high-strength safety guarantee cabin for tunnel constructors, and relates to the technical field of tunnel construction safety. A crawler walking mechanism is arranged on the outer bottom wall of the guarantee cabin body, and a door body is arranged in an opening in the front side wall of the guarantee cabin body; the opening and closing mechanism is arranged in the guarantee cabin body and connected with the rear side wall of the door body. The abutting seats are fixed to the rear inner wall of the guarantee cabin body in a bilateral symmetry mode, abutting rods are inserted into the abutting seats, and the front ends of the abutting rods abut against the door body in a matched mode. The linkage mechanism is arranged in the guarantee cabin body and connected with the opening and closing mechanism and the abutting rod. The protective cover is fixed to the outer bottom wall of the guarantee cabin body, and the front side and the rear side of the protective cover are arranged on the outer side of the guarantee cabin body in an exposed mode. And one side face of each guarantee cabin is provided with a door body, so that constructors can enter the guarantee cabins quickly and simultaneously, and the safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction safety, and in particular to a high-strength safety cabin for tunnel construction personnel. Background Art

[0002] In recent years, tunnel construction accidents have occurred frequently, causing heavy losses of equipment and personnel and great social impact. The soft surrounding rock collapses behind the face. After the collapse occurs, the personnel on the face are trapped, which can easily lead to injuries or deaths of the trapped personnel. The door of the existing support cabin is set on one side of the side wall of the support cabin, so that the construction personnel need to enter in turn. When a collapse occurs, the construction personnel cannot enter quickly, thereby reducing the safety of the construction personnel. Summary of the invention

[0003] The purpose of the present invention is to provide a high-strength safety cabin for tunnel construction personnel with a reasonable design and easy use in view of the defects and shortcomings of the prior art. One side of the cabin is set as a door body, so that construction personnel can enter quickly and simultaneously, thereby improving safety.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: it comprises a support cabin body, a door body and a crawler walking mechanism, the crawler walking mechanism is arranged on the outer bottom wall of the support cabin body, and the door body is arranged in the opening on the front side wall of the support cabin body; it also comprises: An opening and closing mechanism, which is arranged inside the security cabin body and connected to the rear side wall of the door body; The said interference seat is two and is fixed symmetrically on the rear inner wall of the protection cabin body. An interference rod is inserted inside the interference seat, and the front end of the interference rod is matched with the door body for interference setting; A linkage mechanism, wherein the linkage mechanism is arranged in the support cabin body and is connected to the opening and closing mechanism and the abutment rod; A protective cover, the protective cover is fixed on the outer bottom wall of the protection cabin body, and the front and rear sides of the protective cover are respectively exposed on the outside of the protection cabin body; Through the above technical scheme, the crawler walking mechanism drives the safety cabin body to move, so that after the safety cabin body reaches the appropriate position, the opening and closing mechanism is started, and the opening and closing mechanism drives the door body to move upward and rotates at the same time, so that the door body is laterally located on the upper side of the front side wall of the safety cabin body. When the opening and closing mechanism is started, the resistance rod is driven to move through the linkage mechanism, so that the resistance rod is located on the lower side of the door body. When the tunnel collapses and the debris falls downward and hits the door body, the door body resists the resistance rod, thereby providing a certain support to the door body, providing time for construction personnel to enter the safety cabin body, thereby better ensuring the safety of construction personnel.

[0005] As a further improvement of the present invention, the front sides of the upper and lower inner walls of the abutment seat are fixed with limit blocks, which are slidably arranged in the slide grooves on the upper and lower side walls of the abutment rod, respectively, and the rear side of the slide groove is closed; Through the above technical solution, when the resistance rod moves, the slide grooves on the upper and lower inner walls of the resistance rod slide on the limit block, and at the same time, the limit block can limit the forward position of the resistance rod to prevent the resistance rod from moving out of the resistance seat.

[0006] As a further improvement of the present invention, the opening and closing mechanism comprises: There are two opening and closing straight rods, which are symmetrically connected to the upper side of the rear side wall of the door body through a hinge seat, and the upper ends of the opening and closing straight rods are connected to the two sides of the front inner wall of the security cabin body through a shaft rod; There are two opening and closing curved rods, and the lower ends of the opening and closing curved rods are screwed to the two sides below the rear side wall of the door body through a hinge seat, and the bending parts of the opening and closing curved rods are screwed to the two sides of the front inner wall of the security cabin body through an axle rod, and the opening and closing curved rods are located on the lower side of the opening and closing straight rods; There are two moving blocks, and they are respectively slidably arranged in the slide grooves on the upper side of one side wall of the opening and closing curved rod. The outer ends of the moving blocks are screwed with driving blocks through shafts, and the driving blocks are slidably arranged in the two side walls of the security cabin body; Driving screw rods, there are two driving screw rods, which are respectively screwed into the driving block through threads, and the upper and lower ends of the driving screw rods are respectively screwed into the upper and lower inner walls of the support cabin body through bearings, and the two driving screw rods are connected by a synchronous wheel transmission assembly; An opening and closing motor, wherein the opening and closing motor is embedded and fixed in a side wall of the protection cabin body, and the output shaft of the opening and closing motor is connected to one end of one of the driving screws through a bevel gear pair; Through the above technical scheme, the opening and closing motor is started, and the opening and closing motor drives the driving screw connected to it to rotate through the bevel gear pair, and the driving screw drives another driving screw to rotate through the synchronous wheel transmission assembly. The two driving screws drive the driving block to move through the thread, and the driving block drives the moving block to move through the shaft, thereby driving the opening and closing curved rod to rotate, and the opening and closing curved rod drives the lower side of the door body to rotate toward the upper side of the front side, and the upper side of the door body drives the lower end of the opening and closing straight rod to rotate, thereby supporting both sides of the door body through the opening and closing curved rod and the opening and closing straight rod, so that the door body is laterally located on the upper side of the opening of the security cabin body.

[0007] As a further improvement of the present invention, the linkage mechanism comprises: There are two driving rods, which are respectively arranged in the two side walls of the security cabin body through bearings, and a linkage rod is arranged in the lower side wall of the security cabin body through bearings, and the two ends of the linkage rod are respectively connected to the driving rods on both sides through bevel gear pairs; Driving gears, there are two driving gears, which are respectively screwed on the inner walls of the left and right sides of the support cabin body through the shaft and the support plate, the driving gears are meshed with the tooth grooves on the side walls of the abutment rod, and the driving gears are connected to the driving rod through the linkage gear; A driven gear, which is sleeved and fixed on the lower end of one of the driving rods, and is located in the lower side wall of the protection cabin body, and one side of the driven gear is meshed with a driving gear, which is sleeved and fixed on the lower end of one of the driving screw rods; Through the above technical solution, when the driving screw rotates, it drives the active gear to rotate, and the active gear drives the driven gear to rotate, and the driven gear drives the driving rod inside it to rotate, and the driving rod drives the linkage gear on it to rotate. At the same time, the driving rod drives the linkage rod to rotate through the bevel gear pair, and the linkage rod drives another driving rod to rotate through the bevel gear pair, and the driving rod drives the linkage gear on it to rotate, and the linkage gears on both sides respectively drive the driving gears on their respective sides to rotate, and the driving gears drive the resistance rod to move.

[0008] As a further improvement of the present invention, the door body is provided with an observation port, a blocking plate is movably provided inside the observation port, a toggle rod is fixed to one side of the rear side wall of the blocking plate, a convex block on the front side of the toggle rod is slidably provided in a slide groove on the rear side wall of the door body, the toggle rod abuts against the rear side wall of the door body, and the upper and lower sides of the toggle rod are connected to the door body by bolts; Through the above technical solution, after the construction personnel enter the interior of the support cabin and the door is closed, they can loosen the bolts between the toggle rod and the door, and then move the blocking plate to one side so that the blocking plate and the observation port are intertwined, thereby facilitating observation of the external situation.

[0009] As a further improvement of the present invention, a protection bar is provided on the front side wall of the door body, and the protection bar is arranged in a "U" shape, and the vertical bar of the protection bar is located in front of the observation port; Through the above technical solution, when the door body is in an open state, the observation port and the blocking plate can be protected by the protective rod to avoid damage to the blocking plate and inability to open the blocking plate during collapse.

[0010] As a further improvement of the present invention, a plurality of connecting frames are equidistantly arranged from front to back on the upper side of the interior of the support cabin body, and the connecting frames are arranged in an inverted "U" shape, and the horizontal plate of the connecting frame is fixed on the inner top wall of the support cabin body, and connecting rods are fixed on the outer walls of the vertical plates on both sides of the connecting frame, and the other ends of the connecting rods are respectively fixed on the abutment seats on both sides; Through the above technical solution, during use, the abutment seat can be supported by the connecting frame and the connecting rod, thereby increasing the stability of the abutment seat.

[0011] As a further improvement of the present invention, the upper side of the front side wall and the lower side of the rear side wall of the door body both abut against the limit strip, the front limit strip is fixed to the upper side of the front outer wall of the protection cabin body, and the rear limit strip is embedded and fixed on the lower inner wall of the protection cabin body; Through the above technical solution, after the door body is closed, the position of the door body can be limited by the limit strip, thereby ensuring that the door body and the front side wall of the support cabin body are in the same vertical plane.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The door is embedded in the opening on the front side wall of the support cabin body. The door is one side of the support cabin body, so construction workers do not need to enter in sequence, but can enter the support cabin body at the same time, which improves the safety of construction workers; 2. The door body is connected to the security cabin body through an opening and closing mechanism. When the door body is opened, it hangs on the upper side of the opening of the front side wall of the security cabin body, thereby increasing the protection range for construction personnel when they enter the security cabin body, thereby improving safety; 3. A resistance seat and a resistance rod are arranged inside the support cabin body, and they are connected to the opening and closing mechanism through a linkage mechanism. Therefore, after the door body is opened, the resistance rod can be moved out through the linkage mechanism to support the door body, thereby improving the strength of the door body when supporting and increasing the probability of survival of the construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is an exploded view of the door body, opening and closing mechanism and linkage mechanism in the present invention.

[0015] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0016] Figure 4 for Figure 2 Enlarged view of part B in the middle.

[0017] Figure 5 It is an exploded view of the opening and closing mechanism of the present invention.

[0018] Figure 6 It is an exploded view of the linkage mechanism in the present invention.

[0019] Figure 7 It is a schematic diagram of the structure of the blocking plate and the door body in the present invention.

[0020] Description of reference numerals: The support cabin body 1, the door body 2, the observation port 2-1, the crawler walking mechanism 3, the opening and closing mechanism 4, the opening and closing straight rod 4-1, the opening and closing curved rod 4-2, the moving block 4-3, the driving block 4-4, the driving screw 4-5, the opening and closing motor 4-6, the resistance seat 5, the resistance rod 6, the linkage mechanism 7, the driving rod 7-1, the linkage rod 7-2, the driving gear 7-3, the linkage gear 7-4, the driven gear 7-5, the driving gear 7-6, the protective cover 8, the limit block 9, the blocking plate 10, the toggle rod 11, the protective rod 12, the connecting frame 13, the connecting rod 14, the limit strip 15. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings. Embodiment 1:

[0022] like Figure 1-Figure 7 As shown, this embodiment includes a security cabin body 1, a door body 2 and a crawler walking mechanism 3. The crawler walking mechanism 3 is arranged on the outer bottom wall of the security cabin body 1, and the door body 2 is arranged in the opening on the front side wall of the security cabin body 1; the upper side of the front side wall of the door body 2 and the lower side of the rear side wall both abut against the limiting strip 15, the limiting strip 15 on the front side is fixed on the upper side of the front outer wall of the security cabin body 1, and the limiting strip 15 on the rear side is embedded and fixedly welded on the lower inner wall of the security cabin body 1. After the door body 2 is closed, the position of the door body 2 can be limited by the limiting strip 15, so as to ensure that the door body 2 and the front side wall of the security cabin body 1 are in the same vertical plane; it also includes: An opening and closing mechanism 4 is arranged inside the security cabin body 1, and the opening and closing mechanism 4 is connected to the rear side wall of the door body 2; an observation port 2-1 is provided on the door body 2, and a blocking plate 10 is movably arranged inside the observation port 2-1, and a toggle rod 11 is fixed to one side of the rear side wall of the blocking plate 10, and a convex block on the front side of the toggle rod 11 is slidably arranged in a slide groove on the rear side wall of the door body 2, and the toggle rod 11 is in contact with the rear side wall of the door body 2, and the upper and lower sides of the toggle rod 11 are connected to the door body 2 by bolts. When the construction personnel enter the interior of the security cabin body 1 and the door is opened, the toggle rod 11 is opened. After the door body 2 is closed, the bolt between the toggle rod 11 and the door body 2 can be loosened, and then the blocking plate 10 can be moved to one side so that the blocking plate 10 and the observation port 2-1 are interlaced, thereby facilitating observation of the external situation; a protective rod 12 is arranged on the front side wall of the door body 2, and the protective rod 12 is arranged in a "U" shape, and the vertical rod of the protective rod 12 is located in front of the observation port 2-1. When the door body 2 is in an open state, the observation port 2-1 and the blocking plate 10 can be protected by the protective rod 12 to avoid damage to the blocking plate 10 during collapse and the inability to open the blocking plate 10; The interference seat 5 is two and is symmetrically fixed on the rear inner wall of the security cabin body 1. An interference rod 6 is inserted inside the interference seat 5. The front end of the interference rod 6 is matched with the door body 2 for interference setting; the front sides of the upper and lower inner walls of the interference seat 5 are welded and fixed with limiting blocks 9, which are respectively slidably set in the slide grooves on the upper and lower side walls of the interference rod 6. The rear side of the slide groove is closed. When the interference rod 6 moves, the slide grooves on the upper and lower inner walls of the interference rod 6 slide on the limiting blocks 9, and at the same time, the forward position of the interference rod 6 can be limited by the limiting blocks 9 to prevent the interference rod 6 from moving out of the interference seat 5; Several connecting frames 13 are equidistantly arranged on the upper side of the interior of the security cabin body 1 from front to back. The connecting frames 13 are arranged in an inverted "U" shape. The horizontal plates of the connecting frames 13 are welded and fixed to the inner top wall of the security cabin body 1. Connecting rods 14 are welded and fixed to the outer walls of the vertical plates on both sides of the connecting frames 13. The other ends of the connecting rods 14 are respectively welded and fixed to the abutment seats 5 on both sides. During use, the abutment seats 5 can be supported by the connecting frames 13 and the connecting rods 14, thereby increasing the stability of the abutment seats 5. A linkage mechanism 7, wherein the linkage mechanism 7 is disposed in the protection cabin body 1, and the linkage mechanism 7 is connected to the opening and closing mechanism 4 and the abutment rod 6; The protective cover 8 is fixed on the outer bottom wall of the protection cabin body 1 , and the front and rear sides of the protective cover 8 are respectively exposed on the outside of the protection cabin body 1 . Embodiment 2:

[0023] See also Figure 2-3 , Figure 5 As shown, based on Example 1, the opening and closing mechanism 4 includes: The opening and closing straight rods 4-1 are two in number and are symmetrically connected to the upper side of the rear side wall of the door body 2 through a hinge seat, and the upper ends of the opening and closing straight rods 4-1 are connected to the two sides of the front inner wall of the security cabin body 1 through a shaft; The opening and closing curved rods 4-2 are two, and the lower ends of the opening and closing curved rods 4-2 are screwed to the two sides below the rear side wall of the door body 2 through a hinge seat, and the bending parts of the opening and closing curved rods 4-2 are screwed to the two sides of the front inner wall of the security cabin body 1 through an axle rod, and the opening and closing curved rods 4-2 are located at the lower side of the opening and closing straight rods 4-1; Moving blocks 4-3, there are two moving blocks 4-3, and they are respectively slidably arranged in the slide grooves on the upper side of one side wall of the opening and closing bending rod 4-2, and the outer ends of the moving blocks 4-3 are screwed with driving blocks 4-4 through shafts, and the driving blocks 4-4 are slidably arranged in the two side walls of the security cabin body 1; Driving screw rod 4-5, there are two driving screw rods 4-5, and they are respectively screwed in the driving block 4-4 through threads, and the upper and lower ends of the driving screw rod 4-5 are respectively screwed on the upper and lower inner walls of the support cabin body 1 through bearings, and the two driving screw rods 4-5 are connected by a synchronous wheel transmission assembly; The opening and closing motor 4-6 is embedded and fixed in one side wall of the security cabin body 1, and the opening and closing motor 4-6 is in the right side wall of the security cabin body 1. The output shaft of the opening and closing motor 4-6 is connected to the lower end of the driving screw 4-5 on the right side through a bevel gear pair. Embodiment 3:

[0024] See also Figure 2-3 , Figure 5-6 As shown, based on Example 2, the linkage mechanism 7 includes: Driving rods 7-1, there are two driving rods 7-1, and they are respectively arranged in the two side walls of the security cabin body 1 through bearings, and a linkage rod 7-2 is arranged in the lower side wall of the security cabin body 1 through bearings, and the two ends of the linkage rod 7-2 are respectively connected to the driving rods 7-1 on both sides through bevel gear pairs; Driving gear 7-3, there are two driving gears 7-3, and they are respectively screwed on the inner walls of the left and right sides of the support cabin body 1 through the shaft and the support plate, the driving gear 7-3 is meshed with the tooth groove on the side wall of the abutment rod 6, and the driving gear 7-3 is connected to the driving rod 7-1 through the linkage gear 7-4; The driven gear 7-5 is sleeved and welded on the lower end of the driving rod 7-1 on the left side, and the driven gear 7-5 is located in the lower side wall of the security cabin body 1. The front side of the driven gear 7-5 is meshed with a driving gear 7-6, and the driving gear 7-6 is sleeved and fixed on the lower end of the driving screw rod 4-5 on the left side.

[0025] When using the present invention, the crawler walking mechanism 3 drives the security cabin body 1 to move, so that after the security cabin body 1 reaches the appropriate position, the opening and closing mechanism 4 is started, and the opening and closing mechanism 4 drives the door body 2 to move upward and rotate at the same time, so that the door body 2 is laterally located on the upper side of the front side wall of the security cabin body 1, and the opening and closing motor 4-6 is started. The opening and closing motor 4-6 drives the driving screw 4-5 connected to it to rotate through the bevel gear pair, and the driving screw 4-5 drives another driving screw 4-5 to rotate through the synchronous wheel transmission assembly. The two driving screws 4-5 drive the driving block 4-4 to move through the thread, and the driving block 4-4 drives the moving block 4-3 to move through the shaft rod, thereby driving the opening and closing curved rod 4-2 to rotate, and the opening and closing curved rod 4-2 drives the lower side of the door body 2 to rotate toward the upper side of the front side, and the upper side of the door body 2 drives the lower end of the opening and closing straight rod 4-1 to rotate, thereby supporting the two sides of the door body 2 through the opening and closing curved rod 4-2 and the opening and closing straight rod 4-1, so that the door body 2 is laterally located When the driving screw rod 4-5 rotates, the driving gear 7-6 is driven to rotate, and the driving gear 7-6 drives the driven gear 7-5 to rotate, and the driven gear 7-5 drives the driving rod 7-1 inside it to rotate, and the driving rod 7-1 drives the linkage gear 7-4 thereon to rotate. At the same time, the driving rod 7-1 drives the linkage rod 7-2 to rotate through the bevel gear pair, and the linkage rod 7-2 drives another driving rod 7-1 to rotate through the bevel gear pair, and the driving rod 7-1 drives the linkage gear 7-4 thereon to rotate, and the linkage gears 7-4 on both sides respectively drive the driving gears 7-3 on each side to rotate, and the driving gear 7-3 drives the resistance rod 6 to move, so that the resistance rod 6 is located at the lower side of the door body 2. When the tunnel collapses and the rubble falls downward and hits the door body 2, the door body 2 contacts the resistance rod 6, thereby providing a certain support for the door body 2, providing time for the construction personnel to enter the protection cabin body 1, thereby better ensuring the safety of the construction personnel.

[0026] Compared with the prior art, the beneficial effects of this specific implementation are as follows: 1. The door body 2 is embedded in the opening on the front side wall of the security cabin body 1. The door body 2 is a side of the security cabin body 1, so that construction workers do not need to enter in sequence, but can enter the security cabin body 1 at the same time, which improves the safety of construction workers; 2. The door body 2 is connected to the security cabin body 1 through the opening and closing mechanism 4. When the door body 2 is opened, it is suspended on the upper side of the opening of the front side wall of the security cabin body 1. When the construction personnel enter the security cabin body 1, the protection range for the construction personnel can be increased, thereby improving safety; 3. An interference seat 5 and an interference rod 6 are provided inside the protection cabin body 1, and are connected to the opening and closing mechanism 4 through a linkage mechanism 7. Therefore, after the door body 2 is opened, the interference rod 6 can be moved out through the linkage mechanism 7 to support the door body 2, thereby improving the strength of the door body 2 when supporting and increasing the probability of survival of the construction workers.

[0027] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A high-strength safety cabin for tunnel construction personnel, comprising a cabin body (1), a door body (2) and a crawler walking mechanism (3), wherein the crawler walking mechanism (3) is arranged on the outer bottom wall of the cabin body (1), and the door body (2) is arranged in an opening on the front side wall of the cabin body (1); characterized in that: It also contains: An opening and closing mechanism (4), wherein the opening and closing mechanism (4) is arranged inside the security cabin body (1), and the opening and closing mechanism (4) is connected to the rear side wall of the door body (2); The number of the resisting seats (5) is two, and the resisting seats (5) are fixed symmetrically on the rear inner wall of the protection cabin body (1). A resisting rod (6) is inserted into the resisting seat (5), and the front end of the resisting rod (6) is matched with the door body (2) to resist. A linkage mechanism (7), wherein the linkage mechanism (7) is arranged in the support cabin body (1), and the linkage mechanism (7) is connected to the opening and closing mechanism (4) and the abutment rod (6); A protective cover (8) is fixed on the outer bottom wall of the protection cabin body (1), and the front and rear sides of the protective cover (8) are respectively exposed on the outside of the protection cabin body (1).

2. A high-strength safety cabin for tunnel construction personnel according to claim 1, characterized in that: The front sides of the upper and lower inner walls of the abutment seat (5) are fixed with limit blocks (9), which are slidably arranged in the slide grooves on the upper and lower side walls of the abutment rod (6), respectively, and the rear side of the slide groove is closed.

3. A high-strength safety cabin for tunnel construction personnel according to claim 1, characterized in that: The opening and closing mechanism (4) comprises: Opening and closing straight rods (4-1), the number of the opening and closing straight rods (4-1) being two, and the opening and closing straight rods (4-1) being symmetrically connected to the upper side of the rear side wall of the door body (2) through hinge seats, and the upper ends of the opening and closing straight rods (4-1) being connected to the two sides of the front inner wall of the support cabin body (1) through shaft rods; Opening and closing curved rods (4-2), the opening and closing curved rods (4-2) being two in number, and the lower ends of the opening and closing curved rods (4-2) being screwed to the two sides below the rear side wall of the door body (2) through hinged seats, the bending parts of the opening and closing curved rods (4-2) being screwed to the two sides of the front inner wall of the support cabin body (1) through shaft rods, and the opening and closing curved rods (4-2) being located at the lower side of the opening and closing straight rods (4-1); Moving blocks (4-3), the moving blocks (4-3) being two in number and respectively slidably arranged in a slide groove on the upper side of a side wall of the opening and closing curved rod (4-2), a driving block (4-4) being screwed to the outer end of the moving block (4-3) via a shaft, and the driving block (4-4) being slidably arranged in the side walls of the support cabin body (1); A driving screw rod (4-5), wherein there are two driving screw rods (4-5), which are respectively screwed into the driving block (4-4) through threads, and the upper and lower ends of the driving screw rod (4-5) are respectively screwed onto the upper and lower inner walls of the support cabin body (1) through bearings, and the two driving screw rods (4-5) are connected via a synchronous wheel transmission assembly; An opening and closing motor (4-6) is embedded in and fixed to a side wall of the protection cabin body (1), the opening and closing motor (4-6) and the side wall of the protection cabin body (1), and the output shaft of the opening and closing motor (4-6) is connected to one end of one of the driving screw rods (4-5) through a bevel gear pair.

4. A high-strength safety cabin for tunnel construction personnel according to claim 3, characterized in that: The linkage mechanism (7) comprises: Drive rods (7-1), there are two drive rods (7-1), which are respectively arranged in the two side walls of the support cabin body (1) through bearings, and a linkage rod (7-2) is arranged in the lower side wall of the support cabin body (1) through bearings, and the two ends of the linkage rod (7-2) are respectively connected to the drive rods (7-1) on both sides through bevel gear pairs; Driving gears (7-3), there are two driving gears (7-3), which are respectively screwed to the inner walls of the left and right sides of the support cabin body (1) through shafts and support plates, the driving gears (7-3) are meshed with the tooth grooves on the side walls of the abutment rod (6), and the driving gears (7-3) are connected to the driving rod (7-1) through a linkage gear (7-4); A driven gear (7-5) is sleeved and fixed on the lower end of one of the driving rods (7-1), and the driven gear (7-5) is located in the lower side wall of the support cabin body (1), and a driving gear (7-6) is meshed on one side of the driven gear (7-5), and the driving gear (7-6) is sleeved and fixed on the lower end of one of the driving screw rods (4-5).

5. A high-strength safety cabin for tunnel construction personnel according to claim 1, characterized in that: The door body (2) is provided with an observation port (2-1), a blocking plate (10) is movably provided inside the observation port (2-1), a toggle rod (11) is fixed to one side of the rear side wall of the blocking plate (10), a protrusion on the front side of the toggle rod (11) is slidably provided in a slide groove on the rear side wall of the door body (2), the toggle rod (11) abuts against the rear side wall of the door body (2), and the upper and lower sides of the toggle rod (11) are connected to the door body (2) by bolts.

6. A high-strength safety cabin for tunnel construction personnel according to claim 5, characterized in that: A protection rod (12) is arranged on the front side wall of the door body (2), and the protection rod (12) is arranged in a "U" shape, and the vertical rod of the protection rod (12) is located in front of the observation port (2-1).

7. A high-strength safety cabin for tunnel construction personnel according to claim 1, characterized in that: A plurality of connecting frames (13) are arranged equidistantly from front to back on the upper side of the interior of the support cabin body (1), and the connecting frames (13) are arranged in an inverted "U" shape. The horizontal plate of the connecting frame (13) is fixed to the inner top wall of the support cabin body (1), and connecting rods (14) are fixed to the outer walls of the vertical plates on both sides of the connecting frame (13), and the other ends of the connecting rods (14) are respectively fixed to the abutment seats (5) on both sides.

8. A high-strength safety cabin for tunnel construction personnel according to claim 1, characterized in that: The upper side of the front side wall and the lower side of the rear side wall of the door body (2) both abut against the limit strip (15), the front limit strip (15) is fixed to the upper side of the front outer wall of the protection cabin body (1), and the rear limit strip (15) is embedded in and fixed to the lower inner wall of the protection cabin body (1).

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