An extended shelter passageway connection structure

Abstract

The application discloses an extended square cabin passage connecting structure and relates to the technical field of square cabin butt joint. The extended square cabin is arranged on one side of the fixed square cabin and can be manually retracted and extended. The connecting structure comprises a recessed block, the upper and lower surfaces of an inserted block are provided with clamping grooves, and buffer pieces one are arranged in the clamping grooves. The clamping component comprises two clamping blocks, the tooth transmission component is arranged on the extended square cabin and the recessed block, the limiting component comprises two symmetrically-distributed L-shaped plates, the L-shaped plates are provided with buffer pieces two, the clamping blocks are extended into the clamping grooves by moving the recessed block and driving the clamping component to move through the tooth transmission component, the gear row one and the buffer pieces two are abutted at the same time, a plurality of bolts need not to be repeatedly twisted, the connecting time is saved, the connecting efficiency is improved, the impact force is buffered through the buffer pieces one and the buffer pieces two, the abrasion caused by shaking is effectively reduced, the stable connection of the connecting position is ensured, and the connecting quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shelter docking, in particular to an extended shelter passage connecting structure. BACKGROUND

[0002] The shelter is an important device that can be used in the fields of military, medical treatment, communication, etc. The shelter is suitable for use in field operation occasions, and is widely used in various fields, such as mobile command system, communication, medical treatment, logistics support, etc. With the change and improvement of the requirements of rescue and battlefield environment, the original single non-extended shelter cannot provide a larger working space, and therefore the extended structure shelter is applied. The extended form of the extended structure shelter is to first expand the top and bottom, then expand the side plates, and finally expand the side plates to form a closed shelter to increase the effective use area.

[0003] In emergency rescue, in order to form a complete rescue environment, multiple extended shelters are usually connected in series to form a closed system, so that personnel can move between the shelters in a closed condition. The connecting passage is required to connect the two extended shelters. At present, when connecting, multiple bolts need to be repeatedly twisted to connect the connecting passage and the connecting part of the extended shelter, which is time-consuming and laborious, reduces the connection efficiency, and is not conducive to the rapid demand of emergency rescue. After connection, personnel often walk in the connecting passage, which may cause vibration at the connecting part. Since the buffering effect of the bolt connection is poor, the connecting part may be loosened after a long time, affecting the connection quality. SUMMARY

[0004] The purpose of the present application is to provide an extended shelter passage connecting structure to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: an extended shelter passage connecting structure, comprising a fixed shelter, a side surface of the fixed shelter is provided with an extended shelter that can be manually retracted and expanded, the number of the fixed shelter and the extended shelter is multiple, a connecting passage is connected between two extended shelters through multiple connecting structures, the connecting structure comprises:

[0006] A recessed block, a second sliding groove is formed on the surface of the connecting passage for the recessed block to extend into and be slidingly connected, a plug is fixedly connected to the surface of the recessed block through a connecting plate, a clamping groove is formed on the upper and lower surfaces of the plug, a buffer piece one is arranged in the clamping groove, and a plug-in groove is formed on the surface of the extended shelter for the plug to extend into;

[0007] A clamping component is arranged in the extended shelter, and the clamping component comprises two clamping blocks.

[0008] A gear transmission component is disposed on the extended cabin and the recess, and is used to drive the two locking blocks to extend into the locking slot. The gear transmission component includes a gear row.

[0009] The limiting component includes two symmetrically distributed L-shaped plates, and a second buffer is provided on the L-shaped plates to limit the movement of the first toothed row.

[0010] Optionally, the gear transmission component includes:

[0011] A slider, a fixing block is fixedly connected to the surface of the connecting channel, a groove is opened on the surface of the fixing block for the slider to extend into and slide in connection with it, a spring is fixedly connected between the surface of the slider and the inner wall of the groove, a telescopic rod is fixedly connected to the surface of the slider, and a connecting block is fixedly connected to the telescopic part of the telescopic rod.

[0012] A drive block is slidably connected to the surface of the recessed block via an adjustment component. A rotating plate is hinged between the drive block and the connecting block. A gear rack is fixedly connected to the surface of the connecting block. A T-shaped groove is provided inside the extended cabin. A gear is rotatably connected to the inner wall of the T-shaped groove, and the gear meshes with the gear rack.

[0013] The number of gear transmission components is two, and they are symmetrically distributed.

[0014] Optionally, the snap-fit ​​component includes:

[0015] The second gear rack is slidably connected in the T-shaped groove and meshes with the first gear. A telescopic rod is fixedly connected between the end of the locking block and the end of the second gear rack. A spring three is sleeved on the surface of the telescopic rod two, and the two ends of the spring three are fixedly connected to the surface of the locking block and the surface of the second gear rack, respectively.

[0016] A fixing rod is fixedly connected to the inner wall of the T-shaped groove. A cavity is opened in the inner wall of the second toothed rack. A sliding plate is slidably connected to the inner wall of the cavity. The end of the fixing rod extends into the cavity and is fixedly connected to the sliding plate. A tension spring is fixedly connected between the sliding plate and the inner wall of the cavity.

[0017] Optionally, the adjusting assembly includes a threaded rod that is rotatably connected to the inner wall of the recessed block, a turntable is fixedly connected to the end of the threaded rod, a threaded hole is provided on the surface of the driving block for the threaded rod to pass through and be threadedly connected thereto, and a handle is fixedly connected to the surface of the driving block.

[0018] Optionally, the fixing block is provided with an automatic locking component for limiting the movement of the recess, the automatic locking component comprising:

[0019] A rotating shaft is fixedly connected to a housing on the surface of the fixed block. The rotating shaft is rotatably connected to the inner wall of the housing, and the end of the rotating shaft is located outside the housing. A second gear and a ratchet are fixedly connected to the surface of the rotating shaft, and a toothed portion is provided on the surface of the concave block. The toothed portion meshes with the second gear.

[0020] The push rod has a pawl hinged to the inner wall of the housing, and a torsion spring is provided at the hinge. The pawl abuts against the ratchet. The surface of the housing has a through hole for the push rod to extend into. The push rod abuts against the pawl. An end plate is fixedly connected to the end of the push rod. A limit spring is fixedly connected between the end plate and the surface of the housing.

[0021] Optionally, the first buffer component includes a buffer plate, which is slidably connected in the slot. A buffer airbag is provided between the buffer plate and the inner wall of the slot. There are two first buffer components, which are symmetrically distributed.

[0022] The second buffer component includes two limiting rods. The surface of the L-shaped plate has through holes for the limiting rods to pass through and slide with. The ends of the two limiting rods are fixedly connected to an abutment plate. A buffer spring is fixedly connected between the abutment plate and the L-shaped plate. Both the abutment plate and the toothed rack have inclined surfaces.

[0023] Optionally, the surface of the connecting block is provided with a second groove, the inner wall of the second groove is slidably connected with a guide block, and both sides of the guide block are connected to the inner wall of the second groove with a second spring. The surface of the extended cabin is provided with a first groove for the guide block to extend into and slidably connect with it.

[0024] Optionally, the connecting channel includes a telescopic part, a fixing plate is fixedly connected to the surface of the connecting channel, at least two locking rods are slidably connected to the surface of the fixing plate through an opening, the surface of the telescopic part is provided with a locking groove for the locking rods to extend into, multiple locking rods are fixedly connected to each other by a pull plate, and a spring is fixedly connected to both the pull plate and the fixing plate.

[0025] Optionally, the surface of the extended cabin is detachably connected to multiple guide plates, and the surface of the connecting channel is provided with insert plates corresponding to the guide plates.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] I. This invention uses a drive block and a recessed block to drive two toothed racks to slide vertically on the surface of the extended cabin. A gear drives the toothed rack to move towards the slot. Then, a telescopic rod and a spring drive the locking block to extend into the slot to achieve initial connection. At this time, the toothed rack has already abutted against the abutment plate on the L-shaped plate, achieving secondary positioning. This allows the connection process between the connecting channel and the extended cabin to be achieved simply by sliding the recessed block in the sliding groove. Multiple connection structures only require the movement of multiple recessed blocks, eliminating the need to repeatedly twist multiple bolts, saving connection time and improving the connection efficiency of the cabin channel.

[0028] Second, this invention buffers the impact force when the card block is impacted by external force after it is inserted into the card slot. The buffer plate and buffer airbag set in the inner wall of the card slot buffer the impact force, allowing the card block to move slightly in the card slot, reducing the impact force and avoiding breakage. At the same time, the buffer spring can further buffer the external impact force, thereby effectively reducing the wear caused by shaking, ensuring the stable connection at the joint, and improving the connection quality of the cabin passage.

[0029] Third, by pulling the pull plate, the present invention causes multiple locking rods to simultaneously separate from the locking grooves on the surface of the telescopic part, and then the connecting channel can be extended. After extending to the appropriate position, the pull plate is released, and the elastic restoring force of the spring four causes the locking rods to extend into another locking groove, thereby realizing the extension and retraction of the connecting channel. This allows it to adapt to two extended cabins with different distances, improving the practicality of the connecting structure. Attached Figure Description

[0030] Figure 1 This is an isometric view of the overall structure of the present invention;

[0031] Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0032] Figure 3 This is a cross-sectional view of a partial structure of the present invention;

[0033] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point B;

[0034] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point C;

[0035] Figure 6 This is a partial cross-sectional view of the extended modular shelter of the present invention;

[0036] Figure 7 This is a partial cross-sectional view of the toothed rack structure of the present invention;

[0037] Figure 8This is a schematic diagram of the structure at the fixing block of the present invention;

[0038] Figure 9 This is a cross-sectional view of the shell structure of the present invention;

[0039] Figure 10 For the present invention Figure 4 Enlarged view of the structure at point D.

[0040] In the diagram: 1. Fixed cabin; 2. Extendable cabin; 201. Slot; 202. Slide 1; 203. T-slot; 3. Connecting channel; 301. Slide 2; 4. Telescopic part; 5. Insert plate; 6. Guide plate; 7. Recess; 71. Toothed part; 8. Threaded rod; 9. Drive block; 10. Handle; 11. Insert block; 12. Slot; 121. Buffer plate; 13. Fixed block; 131. Groove; 14. Spring 1; 15. Slider; 16. Telescopic rod 1; 17. Connecting block; 18. Guide block; 1 9. Spring 2; 20. Gear 1; 21. Rotating plate; 22. L-shaped plate; 23. Limiting rod; 24. Abutment plate; 25. Buffer spring; 26. Gear 1; 27. Fixing rod; 28. Gear 2; 281. Cavity; 29. ​​Spring 3; 30. Locking block; 31. Slide plate; 32. Tension spring; 33. Housing; 34. Rotating shaft; 35. Gear 2; 36. Ratchet; 37. Pawl; 38. Push rod; 39. Limiting spring; 40. Fixing plate; 41. Locking rod; 42. Spring 4; 43. Pull plate. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1:

[0043] Please see Figures 1 to 10 This embodiment provides a technical solution: an expandable modular cabin passage connection structure, including a fixed cabin 1, with a manually retractable expandable cabin 2 provided on one side of the fixed cabin 1. There are multiple fixed cabins 1 and multiple expandable cabins 2, and connecting passages 3 connect two expandable cabins 2 via multiple connecting structures. For ease of viewing, the top plate is not shown in the attached drawings. The connecting structures include:

[0044] The surface of the recessed block 7 and the connecting channel 3 is provided with a sliding groove 301 for the recessed block 7 to extend into and slide in connection with it. The surface of the recessed block 7 is fixedly connected to the insert block 11 by the connecting plate. The upper and lower surfaces of the insert block 11 are provided with slots 12. A buffer is provided in the slot 12. The surface of the extended cabin 2 is provided with a slot 201 for the insert block 11 to extend into.

[0045] The snap-fit ​​component is located inside the extended cabin 2 and includes two snap-fit ​​blocks 30.

[0046] A gear transmission component is provided on the extended container 2 and the recess 7 to drive the two locking blocks 30 into the slot 12. The gear transmission component includes a gear row 20.

[0047] The limiting component includes two symmetrically distributed L-shaped plates 22, and a buffer element 2 is provided on the L-shaped plates 22 to limit the movement of the toothed row 20.

[0048] More specifically, in this embodiment: after the two extended cabins 2 are unfolded, the connecting channel 3 is placed between the two extended cabins 2, so that the insert 11 is aligned with the slot 201. Then, the recess 7 is pushed to move in the slide groove 301. As the recess 7 moves, the insert 11 moves along the slide groove 301. During the movement of the recess 7, the gear transmission component moves. As the gear transmission component moves, the snap-fit ​​component moves. As the snap-fit ​​component moves, the two snap-fit ​​blocks 30 are respectively inserted into the two snap-fit ​​slots 12 opened on the surface of the insert 11 to achieve a preliminary connection. At the same time, during the movement of the gear transmission component, the two tooth rows 20 will slide on the surface of the extended cabin 2 until they abut against the buffer on the L-shaped plate 22 to achieve a secondary limit. The connection process between the connecting channel 3 and the extended cabin 2 can be achieved simply by moving the recess 7 to slide in the slide groove 301. Multiple connection structures only require moving multiple recesses 7, without repeatedly turning multiple bolts, saving connection time and improving connection efficiency.

[0049] It is worth noting that after the connection channel 3 and the extended cabin 2 are connected, when personnel walk in the connection channel 3 and cause the connection to shake, the impact force on the locking block 30 is buffered by the buffer piece 1 set in the locking slot 12, and the impact force on the locking block 30 is buffered by the buffer piece 2 set on the L-shaped plate 22, thereby effectively reducing the wear caused by shaking, ensuring the stable connection at the connection point, and improving the connection quality.

[0050] Please see Figure 1 and Figure 2Since the connecting channel 3 includes a telescopic part 4, a fixing plate 40 is fixedly connected to the surface of the connecting channel 3. At least two locking rods 41 are slidably connected to the surface of the fixing plate 40 through an opening. The surface of the telescopic part 4 is provided with a locking groove for the locking rods 41 to extend into. Multiple locking rods 41 are fixedly connected to each other by a pull plate 43. A spring 42 is fixedly connected between the pull plate 43 and the fixing plate 40.

[0051] By pulling the pull plate 43, multiple locking rods 41 are simultaneously separated from the locking grooves on the surface of the telescopic part 4, and then the connecting channel 3 can be extended. After extending to the appropriate position, the pull plate 43 is released, and the elastic restoring force of the spring 42 drives the locking rods 41 to extend into another locking groove, thereby realizing the extension and retraction of the connecting channel 3. This allows it to adapt to two extended cabins 2 at different distances, improving the practicality of the connecting structure.

[0052] Furthermore, please refer to Figure 1 and Figure 2 Since the surface of the extended cabin 2 is detachably connected with multiple guide plates 6, and the surface of the connecting channel 3 is provided with insert plates 5 corresponding to the guide plates 6, the extended cabin 2 and the connecting channel 3 can be quickly pre-positioned by setting the guide plates 6 and the insert plates 5 to cooperate during the connection, so as to facilitate the subsequent connection.

[0053] Example 2:

[0054] Based on the above embodiments:

[0055] Please see Figures 3 to 6 The gear transmission component in Embodiment 1 is disclosed as follows: the gear transmission component includes:

[0056] The slider 15 is fixedly connected to the surface of the connecting channel 3 by a fixing block 13. The surface of the fixing block 13 has a groove 131 for the slider 15 to extend into and slide in connection with it. A spring 14 is fixedly connected between the surface of the slider 15 and the inner wall of the groove 131. A telescopic rod 16 is fixedly connected to the surface of the slider 15. A connecting block 17 is fixedly connected to the telescopic part of the telescopic rod 16.

[0057] The drive block 9 is slidably connected to the surface of the recessed block 7 via an adjusting component. The drive block 9 and the connecting block 17 are hinged together by a rotating plate 21. The surface of the connecting block 17 is fixedly connected to a gear rack 20. The interior of the extended cabin 2 is provided with a T-shaped groove 203. The inner wall of the T-shaped groove 203 is rotatably connected to a gear 26. The gear 26 meshes with the gear rack 20. There are two gear transmission components, which are symmetrically distributed. The initial distance between the insert block 11 and the extended cabin 2 is less than the initial distance between the gear rack 20 and the extended cabin 2.

[0058] More specifically, in this embodiment: when the concave block 7 moves toward the extended cabin 2, the adjusting component drives the driving block 9 to follow the concave block 7. The movement of the driving block 9, and the action of the two rotating plates 21, drives the two connecting blocks 17 to move. Because the connecting blocks 17 are subjected to the pressure of the slider 15 and the spring 14, the connecting blocks 17 do not rotate during translational movement. The movement of the connecting blocks 17 drives the gear rack 20 to move toward the gear 26 on the surface of the extended cabin 2. When the gear rack 20 abuts against the gear 26, it cannot continue to move toward the extended cabin 2. At this time, as the concave block 7 moves toward the extended cabin 2, the connecting blocks 17 move along with the extended cabin 2. Block 7 and drive block 9 continue to move, causing two rotating plates 21 to rotate simultaneously. The rotation of the rotating plates 21 causes two toothed racks 20 to slide vertically on the surface of the extended cabin 2, and the two toothed racks 20 move away from each other. The vertical sliding of the two toothed racks 20 on the surface of the extended cabin 2 causes gear 26 to rotate. The rotation of gear 26 causes the locking component to move. Before the toothed racks 20 and gear 26 contact each other, the insert block 11 has already extended into the slot 201, so that the two locking blocks 30 respectively extend into the two slots 12 opened on the surface of the insert block 11, achieving the connection effect.

[0059] Example 3:

[0060] Based on the above embodiments:

[0061] Please see 6 and Figure 7 The snap-fit ​​component in Embodiment 1 is disclosed as follows: the snap-fit ​​component includes:

[0062] The second gear rack 28 is slidably connected in the T-slot 203. The second gear rack 28 meshes with the first gear 26. The end of the locking block 30 and the second gear rack 28 are fixedly connected to the telescopic rod 2. The surface of the telescopic rod 2 is fitted with the third spring 29. The two ends of the third spring 29 are fixedly connected to the surfaces of the locking block 30 and the second gear rack 28, respectively.

[0063] A fixing rod 27 is fixedly connected to the inner wall of the T-slot 203. A cavity 281 is opened in the inner wall of the toothed rack 28. A sliding plate 31 is slidably connected to the inner wall of the cavity 281. The end of the fixing rod 27 extends into the cavity 281 and is fixedly connected to the sliding plate 31. A tension spring 32 is fixedly connected between the sliding plate 31 and the inner wall of the cavity 281. The elastic force of the spring 14 is greater than that of the tension spring 32.

[0064] More specifically, in this embodiment: In the initial state, the second toothed rack 28 is pulled by the tension spring 32 and will not move downward due to gravity. When the first gear 26 rotates, it drives the second toothed rack 28 to move towards the slot 201. Through the movement of the second toothed rack 28, the second telescopic rod and the third spring 29 drive the locking block 30 to move towards the slot 201. Since the insertion block 11 has already been inserted into the slot 201, the locking block 30 will slide relative to the surface of the insertion block 11. At the same time, the pressure on the third spring 29 gradually increases. When the locking block 30 slides relative to the slot 12, the reaction force of the third spring 29 pushes the locking block 30 into the slot 12, achieving the effect of initial connection. At this time, the first toothed rack 20 has already abutted against the second buffer on the L-shaped plate 22. At the same time, the first toothed rack 20 and the first gear 26 are in a meshing state, thus completing the connection between the connecting channel 3 and the extended cabin 2.

[0065] Example 4:

[0066] Based on the above embodiments:

[0067] Please see Figure 4 and Figure 5 The adjustment assembly includes a threaded rod 8, which is rotatably connected to the inner wall of the recess 7. A turntable is fixedly connected to the end of the threaded rod 8. A threaded hole is opened on the surface of the drive block 9 for the threaded rod 8 to pass through and be threadedly connected thereto. A handle 10 is fixedly connected to the surface of the drive block 9.

[0068] More specifically, in this embodiment: by moving the handle 10, the drive block 9 is moved. The movement of the drive block 9 causes the recessed block 7 to slide on the inner wall of the slide groove 301. When it is necessary to disconnect the connection between the connecting channel 3 and the extended cabin 2, since the locking block 30 is inserted into the slot 12, the insert block 11 cannot move, so the recessed block 7 also cannot move. At this time, the threaded rod 8 is rotated, causing the drive block 9 to slide on the surface of the recessed block 7. The movement of the drive block 9 causes the two rotating plates 21 to rotate, and the two connecting blocks 17 cause the two gear racks 20 to move closer to each other on the surface of the extended cabin 2, thereby causing the gear 26 to reverse. Through the action of the tension spring 32, the gear rack 28 is reset, causing the locking block 30 to disengage from the slot 12. Then the recessed block 7 can be pulled to move and reset, achieving the disassembly effect.

[0069] Example 5:

[0070] Based on the above embodiments:

[0071] Please see Figure 5 and Figure 9 The fixed block 13 is provided with an automatic locking component for limiting the movement of the recess 7. The automatic locking component includes:

[0072] The rotating shaft 34 is fixedly connected to the surface of the fixed block 13 and the housing 33. The rotating shaft 34 is rotatably connected to the inner wall of the housing 33, and the end of the rotating shaft 34 is located outside the housing 33. The surface of the rotating shaft 34 is fixedly connected to the gear 2 35 and the ratchet 36 respectively. The surface of the concave block 7 is provided with a toothed part 71, which meshes with the gear 2 35.

[0073] The push rod 38 has a pawl 37 hinged to the inner wall of the housing 33, and a torsion spring is provided at the hinge. The pawl 37 abuts against the ratchet 36. The surface of the housing 33 has a through hole for the push rod 38 to extend into. The push rod 38 abuts against the pawl 37. An end plate is fixedly connected to the end of the push rod 38. A limit spring 39 is fixedly connected between the end plate and the surface of the housing 33.

[0074] More specifically, in this embodiment: during the resetting process of the concave block 7 along the second groove 301, when the toothed portion 71 meshes with the second gear 35, it will drive the second gear 35 to rotate. Through the rotation of the second gear 35, the rotating shaft 34 will rotate... Figure 9 Rotating counterclockwise in the direction shown, it drives the ratchet 36 via the pivot 34. Figure 9 Rotate counterclockwise in the direction shown until the recess 7 is fully reset. At this point, the ratchet 36 will be unable to move due to the action of the pawl 37. Figure 9 The direction shown is rotated clockwise, thereby limiting the rotation of the shaft 34 and the gear 35. The engagement of the teeth 71 of the gear 35 automatically limits the concave block 7, preventing the concave block 7 from shaking when moving the connecting channel 3. When it is necessary to move the concave block 7 to the extended cabin 2, the pawl 37 is pushed to separate from the ratchet 36 by pressing the push rod 38, and then the concave block 7 can be moved to the extended cabin 2.

[0075] Example 6:

[0076] Based on the above embodiments:

[0077] Please see Figures 1 to 10 The first buffer component includes a buffer plate 121, which is slidably connected in the slot 12. A buffer airbag is provided between the buffer plate 121 and the inner wall of the slot 12. There are two buffer components in the first buffer component, which are symmetrically distributed.

[0078] The second buffer includes two limiting rods 23. The surface of the L-shaped plate 22 has through holes for the limiting rods 23 to pass through and slide with. The ends of the two limiting rods 23 are fixedly connected to an abutment plate 24. A buffer spring 25 is fixedly connected between the abutment plate 24 and the L-shaped plate 22. Both the abutment plate 24 and the toothed rack 20 are provided with inclined surfaces.

[0079] More specifically, in this embodiment: when the locking block 30 is inserted into the locking slot 12 and is impacted by external force, the buffer plate 121 and buffer airbag provided on the inner wall of the locking slot 12 buffer the impact force, allowing the locking block 30 to move slightly within the locking slot 12, reducing the impact force and preventing breakage. At the same time, by providing the abutment plate 24 and buffer spring 25, when the toothed rack 20 moves vertically on the surface of the extended cabin 2, the toothed rack 20 will press against the abutment plate 24 through the inclined surface, and the buffer spring 25 will be under pressure. The reaction of the buffer spring 25 will drive the abutment plate 24 to press the toothed rack 20 tightly, and the buffer spring 25 can further buffer the external impact force, thereby effectively reducing the wear caused by shaking, ensuring the stable connection at the joint, and improving the connection quality.

[0080] Example 7:

[0081] Based on the above embodiments:

[0082] Please see Figure 1 and Figure 3 The surface of the connecting block 17 is provided with a groove 2, and the inner wall of the groove 2 is slidably connected to a guide block 18. Both sides of the guide block 18 are connected to the inner wall of the groove 2 with a spring 2 19. The surface of the extended cabin 2 is provided with a slide groove 202 for the guide block 18 to extend into and slidably connect with it.

[0083] More specifically, in this embodiment: when the connecting block 17 moves toward the extended cabin 2, it drives the guide block 18 to move. When the gear row 20 abuts against the gear 26, the guide block 18 has already extended into the slide groove 202. Through the combined action of the guide block 18 and the gear row 20, the rotating plate 21 can rotate stably, avoiding any shaking.

[0084] Working principle: The use of this expandable modular shelter passageway connection structure includes the following steps:

[0085] Step S1: After the two extended cabins 2 are unfolded, the connecting channel 3 is placed between the two extended cabins 2, and the two ends of the connecting channel 3 are respectively abutted against the two extended cabins 2 by the telescopic part 4, so that the insert 11 is aligned with the slot 201, and the guide plate 6 and the insert plate 5 are set to cooperate with each other to quickly perform the initial positioning.

[0086] Step S2: By pressing the push rod 38, the pawl 37 is pushed to separate from the ratchet 36, and then the concave block 7 can be moved towards the extended cabin 2. The drive block 9 is driven to follow the concave block 7 by the adjustment component. Under the action of the two rotating plates 21, the two connecting blocks 17 and the gear row 20 are driven to move towards the extended cabin 2. When the gear row 20 abuts against the gear 26, it can no longer move towards the extended cabin 2. At this time, as the concave block 7 and the drive block 9 continue to move, the two rotating plates 21 are driven to rotate at the same time, so that the two gear rows 20 slide vertically on the surface of the extended cabin 2.

[0087] Step S3: The two toothed racks 20 slide vertically on the surface of the extended container 2, driving the gear 26 to rotate. The rotation of the gear 26 drives the toothed rack 28 to move towards the slot 201. The movement of the toothed rack 28, along with the extension rod 2 and the spring 3 29, drives the locking block 30 to extend into the slot 12, achieving a preliminary connection. At this time, the toothed rack 20 is already in contact with the abutment plate 24 on the L-shaped plate 22, while the toothed rack 20 and the gear 26 remain engaged, achieving a secondary limit.

[0088] Step S4: When the locking block 30 is inserted into the locking slot 12 and is impacted by external force, the buffer plate 121 and buffer airbag set on the inner wall of the locking slot 12 buffer the impact force, allowing the locking block 30 to move slightly within the locking slot 12, reducing the impact force on it and preventing breakage. At the same time, the buffer spring 25 can further buffer the external impact force, thereby effectively reducing the wear caused by shaking, ensuring a stable connection at the joint, and improving the connection quality.

[0089] Step S5: The connection process between the connecting channel 3 and the extended cabin 2 can be achieved simply by moving the recess 7 within the slide groove 301. Multiple connection structures only require moving multiple recesses 7, eliminating the need to repeatedly twist multiple bolts, thus saving connection time and improving connection efficiency.

[0090] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An expandable modular cabin passageway connection structure, comprising a fixed modular cabin (1) and an expandable modular cabin (2), characterized in that, The two extended modular units (2) are connected by a connecting structure with a connecting channel (3), the connecting structure including: The concave block (7) has a sliding groove (301) on the surface of the connecting channel (3) for the concave block (7) to extend into and slide in connection with it. The surface of the concave block (7) is fixedly connected to the insert block (11) by the connecting plate. The upper and lower surfaces of the insert block (11) are provided with slots (12). A buffer is provided in the slot (12). The surface of the extended cabin (2) is provided with a slot (201) for the insert block (11) to extend into. A snap-fit ​​component is disposed inside the extended cabin (2), and the snap-fit ​​component includes two snap-fit ​​blocks (30). A gear transmission component is provided on the extended container (2) and the recess (7) to drive two locking blocks (30) into the locking slot (12). The gear transmission component includes a gear row (20). The limiting component includes two symmetrically distributed L-shaped plates (22), and the L-shaped plates (22) are provided with a buffer member 2 to limit the movement of the tooth row 1 (20); The gear transmission component includes: The slider (15) has a fixed block (13) fixedly connected to the surface of the connecting channel (3). The surface of the fixed block (13) has a groove (131) for the slider (15) to extend into and slide in connection with it. A spring (14) is fixedly connected between the surface of the slider (15) and the inner wall of the groove (131). A telescopic rod (16) is fixedly connected to the surface of the slider (15). A connecting block (17) is fixedly connected to the telescopic part of the telescopic rod (16). A drive block (9) is slidably connected to the surface of the recess (7) via an adjustment component. A rotating plate (21) is hinged between the drive block (9) and the connecting block (17). A gear rack (20) is fixedly connected to the surface of the connecting block (17). A T-shaped groove (203) is provided inside the extended cabin (2). A gear (26) is rotatably connected to the inner wall of the T-shaped groove (203) and meshes with the gear rack (20). The number of gear transmission components is two, and they are symmetrically distributed. The snap-fit ​​component includes: The second gear rack (28) is slidably connected in the T-groove (203). The second gear rack (28) meshes with the first gear (26). The end of the locking block (30) and the second gear rack (28) are fixedly connected to a telescopic rod (2). The surface of the telescopic rod (28) is fitted with a spring (29). The two ends of the spring (29) are fixedly connected to the surfaces of the locking block (30) and the second gear rack (28) respectively. A fixing rod (27) is fixedly connected to the inner wall of the T-groove (203). A cavity (281) is opened in the inner wall of the toothed row (28). A sliding plate (31) is slidably connected to the inner wall of the cavity (281). The end of the fixing rod (27) extends into the cavity (281) and is fixedly connected to the sliding plate (31). A tension spring (32) is fixedly connected between the sliding plate (31) and the inner wall of the cavity (281).

2. The extended modular shelter passage connection structure according to claim 1, characterized in that: The adjustment assembly includes a threaded rod (8), which is rotatably connected to the inner wall of the concave block (7) on a fixed axis. A turntable is fixedly connected to the end of the threaded rod (8). A threaded hole is opened on the surface of the drive block (9) for the threaded rod (8) to pass through and be threadedly connected thereto. A handle (10) is fixedly connected to the surface of the drive block (9).

3. The extended modular cabin passageway connection structure according to claim 2, characterized in that: The fixing block (13) is provided with an automatic locking component for restricting the movement of the recess (7), the automatic locking component comprising: A rotating shaft (34) is fixedly connected to a housing (33) on the surface of the fixed block (13). The rotating shaft (34) is rotatably connected to the inner wall of the housing (33) on a fixed axis, and the end of the rotating shaft (34) is located outside the housing (33). A gear (35) and a ratchet (36) are fixedly connected to the surface of the rotating shaft (34). A toothed portion (71) is provided on the surface of the concave block (7), and the toothed portion (71) meshes with the gear (35). The push rod (38) has a pawl (37) hinged to the inner wall of the housing (33), and a torsion spring is provided at the hinge. The pawl (37) abuts against the ratchet (36). The surface of the housing (33) has a through hole for the push rod (38) to extend into. The push rod (38) abuts against the pawl (37). An end plate is fixedly connected to the end of the push rod (38). A limit spring (39) is fixedly connected between the end plate and the surface of the housing (33).

4. The extended modular cabin passageway connection structure according to claim 3, characterized in that: The first buffer component includes a buffer plate (121), which is slidably connected in the slot (12). A buffer airbag is provided between the buffer plate (121) and the inner wall of the slot (12). There are two first buffer components, which are symmetrically distributed. The second buffer component includes two limiting rods (23). The surface of the L-shaped plate (22) is provided with a through hole for the limiting rods (23) to pass through and slide with it. The ends of the two limiting rods (23) are fixedly connected to an abutment plate (24). A buffer spring (25) is fixedly connected between the abutment plate (24) and the L-shaped plate (22). Both the abutment plate (24) and the toothed rack (20) are provided with inclined surfaces.

5. The extended modular cabin passageway connection structure according to claim 4, characterized in that: The surface of the connecting block (17) is provided with a groove II, and the inner wall of the groove II is slidably connected to a guide block (18). Both sides of the guide block (18) are connected to the inner wall of the groove II with a spring II (19). The surface of the extended cabin (2) is provided with a slide groove I (202) for the guide block (18) to extend into and slidably connect with it.

6. The extended modular shelter passageway connection structure according to claim 1, characterized in that: The connecting channel (3) includes a telescopic part (4). A fixing plate (40) is fixedly connected to the surface of the connecting channel (3). At least two locking rods (41) are slidably connected to the surface of the fixing plate (40) through an opening. A locking groove for the locking rods (41) to extend into is opened on the surface of the telescopic part (4). Multiple locking rods (41) are fixedly connected to each other through a pull plate (43). A spring (42) is fixedly connected between the pull plate (43) and the fixing plate (40).

7. The extended modular shelter passageway connection structure according to claim 1, characterized in that: The surface of the extended cabin (2) is detachably connected to multiple guide plates (6), and the surface of the connecting channel (3) is provided with insert plates (5) corresponding to the guide plates (6).

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