Rescue sleeve

Abstract

The utility model belongs to the technical field of underground engineering, and particularly relates to a rescue sleeve which comprises a connecting part, a connecting cylinder fixedly connected to the bottom of the connecting part, a sleeve middle section connected to the bottom of the connecting cylinder, a sleeve bottom section connected to the bottom of the sleeve middle section, and a drill bit installed on the sleeve bottom section. The rescue sleeve has the advantages that a lifesaving channel can be quickly established, rescue time is greatly shortened, and trapped persons can be quickly rescued.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground engineering, in particular to a rescue casing. Background Art

[0002] With the progress of society, underground comprehensive pipelines are being used more and more widely. Although the construction technology is constantly improving and safety is constantly improving, landslides may still occur due to changes in the geological environment or other factors.

[0003] If people are trapped in the tunnel, rescue work needs to be carried out immediately. Traditional rescue methods are mostly to excavate layer by layer, and to clear the collapsed body in a layered and sectioned manner. The excavation area is large and the excavation takes a long time. The slow rescue speed may lead to rescue failure and miss the golden time for rescue.

[0004] How to quickly establish a rescue channel in the event of a landslide and buy time for rescue is an issue that needs to be addressed urgently. Utility Model Content

[0005] In order to solve the problems in the above-mentioned background technology, the utility model provides a rescue casing, in which the middle section and the bottom section of the casing are connected to the inside of the pipe gallery, and a rescue channel is quickly established. The staff uses a lifting device to lower the lifeboat through the middle section and the bottom section of the casing into the pipe gallery, and rescues the trapped persons in time. By quickly establishing a lifeboat channel, the rescue time is greatly shortened, and the trapped persons can be rescued more quickly.

[0006] The utility model provides a rescue casing, comprising a connecting part, a connecting tube fixedly connected to the bottom of the connecting part, a casing middle section connected to the bottom of the connecting tube, a casing bottom section connected to the bottom of the casing middle section, and a drill bit installed on the casing bottom section.

[0007] Furthermore, a first connecting pipe sleeved with the connecting tube is fixedly connected to the top of the middle section of the sleeve, and a first connecting assembly is provided between the connecting tube and the first connecting pipe.

[0008] Furthermore, a second connecting pipe is fixedly connected to the bottom of the middle section of the casing, a third connecting pipe sleeved with the second connecting pipe is fixedly connected to the top of the bottom section of the casing, and a second connecting assembly is provided between the third connecting pipe and the second connecting pipe.

[0009] Furthermore, a first inner tube is provided inside the middle section of the casing, a first sealing ring is fixedly connected between the top end of the outer wall of the first inner tube and the first connecting tube, a second sealing ring is fixedly connected between the bottom end of the outer wall of the first inner tube and the second connecting tube, a second inner tube is provided inside the bottom section of the casing, a third sealing ring is fixedly connected between the top end of the outer wall of the second inner tube and the third connecting tube, and a fourth sealing ring is fixedly connected between the bottom end of the outer wall of the second inner tube and the middle of the bottom section of the casing.

[0010] Furthermore, a cement pool is fixedly connected to the outer wall of the connecting part, a cement pump is fixedly connected to the bottom of the cement pool, the cement pump is connected to a first cement pipe connected to the interior of the cement pool, a second cement pipe is inserted between the first sealing ring and the second sealing ring, the first cement pipe is inserted into the interior of the connecting part and the lower end of the first cement pipe is connected to the top end of the second cement pipe, a third cement pipe is inserted between the third sealing ring and the fourth sealing ring, the lower end of the second cement pipe is connected to the top end of the third cement pipe, and a discharge hole connected to the third cement pipe is provided at the bottom of the bottom section of the casing.

[0011] Furthermore, the first connecting component includes a plurality of connecting blocks fixedly connected to the side wall of the connecting tube, a connecting groove is provided inwardly on the side of the connecting block away from the connecting tube, a connecting rod is slidably inserted in the connecting groove, a handle is fixedly connected to the end of the connecting rod, a clamping groove connected to the connecting groove is provided on the outer wall of the connecting block, the clamping groove is spirally arranged, the connecting rod is connected to a clamping rod placed in the clamping groove, a plurality of first abutting blocks corresponding to the connecting blocks are fixedly connected to the side wall of the first connecting tube, and a first abutting groove is provided on the side wall of the first abutting block for the end of the connecting rod to abut against.

[0012] Furthermore, the second connecting assembly includes a plurality of connecting covers fixedly connected to the side walls of the second connecting tube, a fixing block is threadedly connected to the inner wall of the connecting cover, a plurality of second abutting blocks corresponding to the connecting covers are fixedly connected to the side walls of the third connecting tube, and a second abutting groove is fixedly connected to the side walls of the second abutting blocks for abutting the ends of the fixing blocks.

[0013] Furthermore, a plurality of sleeve middle sections are provided, and two adjacent sleeve middle sections are connected in sequence and abutted and fixed with the first abutment groove via a fixing block.

[0014] Furthermore, a first connecting key is fixedly connected to the side wall of the first connecting tube, and a first key groove is provided on the side wall of the connecting tube for plugging with the first connecting key.

[0015] Furthermore, a second connecting key is fixedly connected to the side wall of the third connecting tube, and a second key groove is provided on the side wall of the second connecting tube for plugging with the second connecting key.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The middle section and the bottom section of the casing are connected to the interior of the tunnel, and the rescue passage is quickly established. The staff uses the lifting equipment to lower the lifeboat through the middle section and the bottom section of the casing into the tunnel, and rescues the trapped people in time. By quickly establishing the lifeboat passage, the rescue time is greatly shortened, and the trapped people are rescued more quickly.

[0018] (2) The cement pump transports the cement in the cement pool to the first cement pipe. The cement passes through the first cement pipe, the second cement pipe, and the third cement pipe in sequence and is discharged through the discharge hole. The cement fills the gap between the bottom section of the casing and the geological layer. The cement is formed. The formed cement increases the supporting strength of the geology near the bottom section of the casing and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of an embodiment of the present application;

[0021] Figure 2 Schematic diagram of the first inner tube and the second inner tube in this embodiment;

[0022] Figure 3 This is a schematic diagram of a connecting rod in this embodiment;

[0023] Figure 4 This is a schematic diagram of a fixed block in this embodiment;

[0024] Figure 5 This is a schematic diagram showing the discharge hole in this embodiment;

[0025] Figure 6 This is a schematic diagram of the card slot in this embodiment;

[0026] Figure 7 for Figure 1 Enlarged schematic diagram of part A.

[0027] Description of reference numerals: 1, connecting part; 11, cement pool; 111, cement pump; 112, first cement pipe; 113, support plate; 2, connecting tube; 21, first keyway; 3, middle section of casing; 31, first connecting pipe; 311, first connecting key; 32, second connecting pipe; 321, second keyway; 33, first inner pipe; 331, first sealing ring; 332, second sealing ring; 34, second cement pipe; 4, first connecting assembly; 41, connecting block; 411, connecting groove; 412 , snap-fit ​​groove; 413, reinforcement plate; 42, connecting rod; 43, handle; 44, snap-fit ​​rod; 45, first abutment block; 451, first abutment groove; 5, casing bottom section; 51, drill bit; 52, third connecting pipe; 521, second connecting key; 53, second inner pipe; 531, third sealing ring; 532, fourth sealing ring; 54, third cement pipe; 55, discharge hole; 6, second connecting assembly; 61, connecting cover; 62, fixing block; 63, second abutment block; 631, second abutment groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0029] The following is combined with Figure 1 To Attachment Figure 7 And specific embodiments discuss the utility model in detail.

[0030] like Figures 1 to 7 As shown, the utility model provides a rescue casing, comprising a connecting part 1 connected to an external rotary drilling machine driving part, and the driving part drives the connecting part 1 to rotate. A connecting tube 2 is fixedly connected to the bottom of the connecting part 1, a casing middle section 3 is connected to the bottom of the connecting tube 2, a first connecting pipe 31 is fixedly connected to the top of the casing middle section 3, the first connecting pipe 31 is placed inside the connecting tube 2, the connecting tube 2 and the first connecting pipe 31 are sleeved, a first connecting assembly 4 is connected between the connecting tube 2 and the first connecting pipe 31, and the first connecting assembly 4 connects and fixes the first connecting pipe 31 to the connecting tube 2.

[0031] The bottom of the casing middle section 3 is fixedly connected with a second connecting pipe 32, and the casing middle section 3 is connected with the casing bottom section 5 through the second connecting pipe 32. The casing bottom section 5 is installed with a drill bit 51. The top of the casing bottom section 5 is fixedly connected with a third connecting pipe 52, and the third connecting pipe 52 is placed inside the second connecting pipe 32. The second connecting pipe 32 and the third connecting pipe 52 are sleeved. A second connecting assembly 6 is connected between the second connecting pipe 32 and the third connecting pipe 52, and the second connecting assembly 6 connects and fixes the second connecting pipe 32 and the third connecting pipe 52.

[0032] When it is necessary to establish a rescue channel, first determine the rescue point on the ground, then place the casing bottom section 5 above the rescue point and align it with the rescue point, and the driving unit drives the casing middle section 3 and the casing bottom section 5 to drill downward through the connecting part 1. After drilling downward for a certain distance, the driving unit stops driving the connecting part 1 to rotate, and the rotary bucket connected to the driving unit performs a slag removal operation on the soil and debris inside the casing middle section 3 and the casing bottom section 5. The first connecting component 4 releases the restriction on the first connecting pipe 31, and the driving unit drives the connecting part 1 and the rotary bucket to move upward to discharge the soil and debris inside the casing middle section 3 and the casing bottom section 5, and then connects the connecting tube 2 to the first connecting pipe 31. The first connecting component 4 connects and fixes the connecting tube 2 to the first connecting pipe 31, and repeats the above drilling process until the drill bit 51 drills into the top concrete layer of the pipe gallery, and the rotary bucket is replaced with a roller drill, and the driving unit drives the roller drill to rotate until it is connected to the inside of the pipe gallery. The driving unit, rotary bucket and roller drill of the rotary drilling machine are all prior art and will not be repeated here.

[0033] The first connecting component 4 releases the restriction on the first connecting pipe 31, separates the connecting part 1 from the middle section 3 of the casing, and the middle section 3 and the bottom section 5 of the casing are connected with the inside of the pipe gallery. The rescue channel is quickly established, and the staff uses the lifting equipment to lower the lifeboat through the middle section 3 and the bottom section 5 of the casing into the pipe gallery to rescue the trapped persons in time. By quickly establishing the lifeboat channel, the rescue time is greatly shortened, and the trapped persons are rescued more quickly.

[0034] The outer wall of the connection part 1 is fixedly connected with a cement pool 11 for holding cement, and the cement pool 11 is arranged around the connection part 1. A plurality of cement pumps 111 are fixedly connected to the lower surface of the cement pool 11, and each cement pump 111 is connected with a first cement pipe 112, one end of the first cement pipe 112 is connected with the inside of the cement pool 11, and the other end of the first cement pipe 112 extends into the inside of the connection part 1.

[0035] A first inner tube 33 is provided inside the middle section 3 of the casing, and a first sealing ring 331 is fixedly connected to the top of the outer wall of the first inner tube 33. The first sealing ring 331 is arranged around the first inner tube 33, and the first sealing ring 331 is placed between the first inner tube 33 and the first connecting tube 31. The first sealing ring 331 is fixedly connected to the first connecting tube 31.

[0036] A second sealing ring 332 is fixedly connected to the bottom of the outer wall of the first inner tube 33 . The second sealing ring 332 is arranged around the first inner tube 33 . The second sealing ring 332 is placed between the first inner tube 33 and the second connecting tube 32 . The second sealing ring 332 is fixedly connected to the second connecting tube 32 .

[0037] A plurality of second cement pipes 34 are provided between the first sealing ring 331 and the second sealing ring 332, and the second cement pipes 34 are provided one by one in correspondence with the first cement pipes 112. The top end of the second cement pipe 34 is plugged into the first sealing ring 331, and the bottom end of the second cement pipe 34 is plugged into the second sealing ring 332. When the connecting portion 1 is connected to the middle section 3 of the casing, the bottom end of the first cement pipe 112 and the top end of the second cement pipe 34 abut against each other, and the first cement pipe 112 and the second cement pipe 34 are connected.

[0038] A second inner tube 53 is provided inside the casing bottom section 5, and a third sealing ring 531 is fixedly connected to the top of the outer wall of the second inner tube 53. The third sealing ring 531 is arranged around the second inner tube 53, and the third sealing ring 531 is placed between the second inner tube 53 and the third connecting tube 52. The third sealing ring 531 is fixedly connected to the third connecting tube 52.

[0039] The bottom of the outer wall of the second inner tube 53 is fixedly connected with a fourth sealing ring 532, which is fixedly connected to the inner wall of the casing bottom section 5. A plurality of third cement pipes 54 are arranged between the third sealing ring 531 and the fourth sealing ring 532, and the third cement pipes 54 correspond to the second cement pipes 34 one by one.

[0040] The top end of the third cement pipe 54 is plugged into the third sealing ring 531. When the casing middle section 3 is connected to the casing bottom section 5, the bottom end of the second cement pipe 34 abuts against the top end of the third cement pipe 54, and the second cement pipe 34 is connected to the third cement pipe 54. The bottom end of the third cement pipe 54 is plugged into the fourth sealing ring 532, and the bottom end of the third cement pipe 54 is connected to the space below the fourth sealing ring 532. A plurality of discharge holes 55 are provided at the bottom of the casing bottom section 5, and the discharge holes 55 are connected to the space below the fourth sealing ring 532.

[0041] When the drill bit 51 drills into the concrete layer at the top of the tunnel, cement is poured into the cement pool 11, and the cement pump 111 transports the cement in the cement pool 11 to the first cement pipe 112. The cement passes through the first cement pipe 112, the second cement pipe 34, and the third cement pipe 54 in sequence and is discharged through the discharge hole 55. The cement fills the gap between the bottom section of the casing 5 and the geological layer. After the cement is formed, the roller drill rotates again until it connects to the inside of the tunnel. The formed cement increases the supporting strength of the geology near the bottom section of the casing 5, thereby improving safety.

[0042] A plurality of support plates 113 are fixedly connected between the lower surface of the cement pool 11 and the outer wall of the connecting portion 1 . The support plates 113 support the cement pool 11 and increase the stability of the connection between the cement pool 11 and the connecting portion 1 .

[0043] The first connecting component 4 includes a plurality of connecting blocks 41 fixedly connected to the side wall of the connecting tube 2. In the present embodiment, the number of the connecting blocks 41 is four. A connecting groove 411 is provided inwardly on the side of the connecting block 41 away from the connecting tube 2. A connecting rod 42 is slidably inserted in the connecting groove 411. A handle 43 is fixedly connected to the end of the connecting rod 42 away from the first connecting tube 31.

[0044] The outer wall of the connecting rod 42 is provided with a clamping groove 412, which is connected to the connecting groove 411 and spirally arranged along the outer wall of the connecting block 41. The connecting rod 42 is fixedly connected with a clamping rod 44, which is placed in the clamping groove 412. When the handle 43 is turned, the clamping rod 44 slides in the clamping groove 412. During the sliding process of the clamping rod 44, the clamping rod 44 moves along the spiral direction of the clamping groove 412, and the clamping rod 44 drives the connecting rod 42 to move toward the side close to the first connecting tube 31. When the handle 43 is turned in the opposite direction, the clamping rod 44 drives the connecting rod 42 to move toward the side away from the first connecting tube 31.

[0045] A plurality of first abutment blocks 45 are fixedly connected to the side wall of the first connection tube 31, wherein four first abutment blocks 45 are arranged one-to-one corresponding to the connection block 41. A first abutment groove 451 is arranged on the side wall of the first abutment block 45. The handle 43 is turned to drive the connection rod 42 to move toward the side close to the first connection tube 31. When the end of the connection rod 42 is tightly abutted with the first abutment groove 451, the clamping rod 44 is clamped with the clamping groove 412, and the connection rod 42 connects and fixes the connection tube 2 with the first connection tube 31. The handle 43 is turned in the opposite direction, and the connection rod 42 moves toward the side away from the first connection tube 31, and the connection rod 42 is separated from the first clamping groove 412, thereby releasing the restriction on the first connection tube 31, and the connection tube 2 can be separated from the first connection tube 31.

[0046] A reinforcing plate 413 is fixedly connected between the connecting block 41 and the connecting tube 2 , and the reinforcing plate 413 increases the stability of the connection between the connecting block 41 and the connecting tube 2 .

[0047] The second connection assembly 6 includes a plurality of connection covers 61 fixedly connected to the side wall of the second connection pipe 32, the inner wall of the connection cover 61 is provided with threads, and the inner wall of the connection cover 61 is threadedly connected to a fixing block 62. A plurality of second abutment blocks 63 are fixedly connected to the side wall of the third connection pipe 52, and the second abutment blocks 63 are arranged one by one with the connection covers 61.

[0048] The side wall of the second abutting block 63 is provided with a second abutting groove 631, the fixing block 62 is threadedly connected to the connection cover 61, the end of the fixing block 62 is tightly abutted against the second abutting groove 631, and the fixing block 62 connects and fixes the second connecting pipe 32 and the third connecting pipe 52. The fixing block 62 is separated from the connection cover 61, and the fixing block 62 is separated from the second abutting groove 631, the restriction on the third connecting pipe 52 is released, and the second connecting pipe 32 can be separated from the third connecting pipe 52.

[0049] A plurality of first connection keys 311 are fixedly connected to the side wall of the first connection tube 31, and a plurality of first key slots 21 are provided on the side wall of the connection tube 2. The first key slots 21 are arranged one-to-one with the first connection keys 311, and the first connection keys 311 are plugged into the first key slots 21. When the connection tube 2 is connected to the first connection tube 31, the first connection keys 311 are plugged into the first key slots 21 to play a positioning role, which facilitates the quick connection and installation of the connection tube 2 and the first connection tube 31. When the connection tube 2 drives the first connection tube 31 to rotate, the first connection tube 31 is driven to rotate through the first connection keys 311.

[0050] The side wall of the third connecting tube 52 is fixedly connected with a plurality of second connecting keys 521, and the side wall of the second connecting tube 32 is provided with a plurality of second key slots 321, and the second key slots 321 are arranged one-to-one with the second connecting keys 521, and the second connecting keys 521 are plugged into the second key slots 321. When the second connecting tube 32 is connected to the third connecting tube 52, the plugging of the second connecting key 521 and the second key slot 321 plays a positioning role, which facilitates the rapid installation of the second connecting tube 32 and the third connecting tube 52. When the second connecting tube 32 drives the third connecting tube 52 to rotate, the third connecting tube 52 is driven to rotate through the second connecting key 521.

[0051] The number of casing sections 3 can also be reasonably selected according to actual conditions. The number of casing sections 3 can be increased according to the rescue depth. When there are multiple casing sections 3, the casing sections 3 are connected end to end in sequence, and the number of first abutment blocks 45 is the same as the number of fixing blocks 62 and is correspondingly arranged. When the casing sections 3 are connected at the end, the two adjacent casing sections 3 are connected and fixed by the fixing block 62 abutting against the first abutment groove 451. When the casing sections 3 are connected at the end, the first connection key 311 is plugged into the second key groove 321.

[0052] The implementation principle of a rescue casing provided by the utility model is: the connecting tube 2 is connected and fixed with the first connecting pipe 31 by abutting the connecting rod 42 with the first abutting groove 451, and the first cement pipe 112 is abutted and connected with the second cement pipe 34. The second connecting pipe 32 is connected and fixed with the third connecting pipe 52 by abutting the fixing block 62 with the second abutting groove 631, and the second cement pipe 34 is abutted and connected with the third cement pipe 54. The middle section 3 and the bottom section 5 of the casing are drilled downward to finally form a rescue channel. The staff lowers the lifeboat through the middle section 3 and the bottom section 5 of the casing into the corridor through the lifting equipment to rescue the trapped people in time.

[0053] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A rescue casing, characterized in that: The invention comprises a connecting part (1), the bottom of the connecting part (1) is fixedly connected to a connecting tube (2), the bottom of the connecting tube (2) is connected to a casing middle section (3), the bottom of the casing middle section (3) is connected to a casing bottom section (5), and the casing bottom section (5) is equipped with a drill bit (51).

2. A rescue sleeve according to claim 1, characterized in that: A first connecting pipe (31) sleeved with the connecting tube (2) is fixedly connected to the top of the sleeve middle section (3), and a first connecting assembly (4) is provided between the connecting tube (2) and the first connecting pipe (31).

3. A rescue sleeve according to claim 2, characterized in that: The bottom of the middle section (3) of the sleeve is fixedly connected to a second connecting pipe (32), the top of the bottom section (5) of the sleeve is fixedly connected to a third connecting pipe (52) sleeved with the second connecting pipe (32), and a second connecting assembly (6) is provided between the third connecting pipe (52) and the second connecting pipe (32).

4. A rescue sleeve according to claim 3, characterized in that: A first inner tube (33) is provided inside the middle section (3) of the casing; a first sealing ring (331) is fixedly connected between the top end of the outer wall of the first inner tube (33) and the first connecting tube (31); a second sealing ring (332) is fixedly connected between the bottom end of the outer wall of the first inner tube (33) and the second connecting tube (32); a second inner tube (53) is provided inside the bottom section (5) of the casing; a third sealing ring (531) is fixedly connected between the top end of the outer wall of the second inner tube (53) and the third connecting tube (52); a fourth sealing ring (532) is fixedly connected between the bottom end of the outer wall of the second inner tube (53) and the middle of the bottom section (5) of the casing.

5. A rescue sleeve according to claim 4, characterized in that: The outer wall of the connecting portion (1) is fixedly connected to a cement pool (11), the bottom of the cement pool (11) is fixedly connected to a cement pump (111), the cement pump (111) is connected to a first cement pipe (112) connected to the inside of the cement pool (11), a second cement pipe (34) is inserted between the first sealing ring (331) and the second sealing ring (332), the first cement pipe (112) is inserted into the inside of the connecting portion (1) and the lower end of the first cement pipe (112) is abutted and connected with the top end of the second cement pipe (34), a third cement pipe (54) is inserted between the third sealing ring (531) and the fourth sealing ring (532), the lower end of the second cement pipe (34) is abutted and connected with the top end of the third cement pipe (54), and a discharge hole (55) connected to the third cement pipe (54) is provided at the bottom of the casing bottom section (5).

6. A rescue sleeve according to claim 3, characterized in that: The first connecting assembly (4) comprises a plurality of connecting blocks (41) fixedly connected to the side wall of the connecting tube (2); a connecting groove (411) is provided inwardly on a side of the connecting block (41) away from the connecting tube (2); a connecting rod (42) is slidably inserted in the connecting groove (411); a handle (43) is fixedly connected to the end of the connecting rod (42); an outer wall of the connecting block (41) is provided with a clamping groove (412) connected to the connecting groove (411); the clamping groove (412) is spirally arranged; the connecting rod (42) is connected to a clamping rod (44) arranged in the clamping groove (412); a plurality of first abutting blocks (45) corresponding to the connecting blocks (41) are fixedly connected to the side wall of the first connecting tube (31); a first abutting groove (451) for abutting the end of the connecting rod (42) is provided on the side wall of the first abutting block (45).

7. A rescue sleeve according to claim 6, characterized in that: The second connection assembly (6) comprises a plurality of connection covers (61) fixedly connected to the side wall of the second connection tube (32); the inner wall of the connection cover (61) is threadedly connected to a fixing block (62); the side wall of the third connection tube (52) is fixedly connected to a plurality of second abutment blocks (63) corresponding to the connection covers (61); the side wall of the second abutment block (63) is fixedly connected to a second abutment groove (631) for abutting the end of the fixing block (62).

8. A rescue sleeve according to claim 7, characterized in that: A plurality of sleeve middle sections (3) are provided, and two adjacent sleeve middle sections (3) are connected in sequence and abutted and fixed with the first abutment groove (451) via a fixing block (62).

9. A rescue sleeve according to claim 3, characterized in that: The side wall of the first connecting tube (31) is fixedly connected with a first connecting key (311), and the side wall of the connecting cylinder (2) is provided with a first key slot (21) plugged into the first connecting key (311).

10. A rescue sleeve according to claim 3, characterized in that: The side wall of the third connecting tube (52) is fixedly connected with a second connecting key (521), and the side wall of the second connecting tube (32) is provided with a second key slot (321) plugged into the second connecting key (521).

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