An assembled building body with long service life

Abstract

The present invention discloses an assembled building body with a long service life, comprising a base and a house body slidably arranged on the top of the base, the top of the base is provided with a groove, the bottom of the house body is fixedly connected with a sliding block slidably matched with the groove, the groove is provided with a sliding rod penetrating the sliding block and slidably connected with the sliding block, a spring is sleeved on the outer side of the sliding rod, the base is provided with a through groove at the bottom of the groove, a top plate is slidably connected in the through groove, and the top of the top plate is fixedly connected with a limiting shaft; through this structure, in daily use, the limiting shaft cooperates with the limiting hole on the sliding rod to limit the sliding block, so that the house body can be stably placed on the top of the base, which is convenient for use; when the wind force increases, the limiting shaft is separated from the sliding rod, so that the house body can slide from the top of the base, thereby avoiding direct confrontation between the house body and the wind force, and protecting it.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated building body with a long service life. Background Art

[0002] Buildings assembled on site from prefabricated parts are called prefabricated buildings. According to the form of prefabricated components and construction methods, they are divided into five types: block buildings, plate buildings, box buildings, frame plate buildings, and raised plate and raised floor buildings.

[0003] Chinese invention patent CN110306682A discloses an anti-seismic structure of an assembled building using cement prefabricated components, including a base, a first groove is provided at the upper end of the base, a bottom plate is provided in the first groove, a residential body is fixedly connected to the upper end of the bottom plate, a plurality of first shock absorbing devices and a plurality of first elastic members are fixedly connected to the lower end of the bottom plate, the lower end of the first elastic member is fixedly connected to the bottom of the first groove, a plurality of support columns are provided in the residential body, the upper and lower ends of the support columns are fixedly connected to a mounting plate, a plurality of second shock absorbing devices are provided on the top surface of the residential body and the upper end of the bottom plate, the second shock absorbing devices are rotatably connected to the mounting plate, and the first shock absorbing device includes a first connecting rod fixedly connected to the lower end of the bottom plate. The advantage is that the present invention has a strong shock absorbing effect by using two shock absorbing devices in combination, and can provide a better protective effect for assembled residential buildings.

[0004] However, although the above-mentioned prefabricated buildings can play a role in buffering and shock absorption when in use, the shock absorption structure lacks a corresponding limiting structure. In actual use, the building needs to be buffered and shock-absorbed only when the wind force reaches a certain level. When the wind force is small, if the shock-absorbing components also work, their service life will be shortened, thereby shortening the overall service life of the building body.

[0005] Therefore, it is necessary to provide a prefabricated building body with a long service life to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide an assembled building body with a long service life, so as to solve the problem that the existing assembled buildings mentioned in the above background technology can play a buffering and shock-absorbing effect when in use, but lack a corresponding limiting structure for the shock-absorbing structure. In actual use, the building needs to be buffered and shock-absorbed only when the wind force reaches a certain level. When the wind force is small, if the shock-absorbing components also work, their service life will be shortened, thereby shortening the overall service life of the building body.

[0007] Based on the above ideas, the present invention provides the following technical solutions: comprising a base and a house body slidably arranged on the top of the base, the top of the base is provided with a groove, the bottom of the house body is fixedly connected with a slider slidably matched with the groove, the groove is provided with a slide rod penetrating the slide rod and slidably connected with the slide rod, the outer side of the slide rod is sleeved with a second spring, the base is provided with a through groove at the bottom of the groove, a top plate is slidably connected in the through groove, the top of the top plate is fixedly connected with a limiting shaft, and a limiting hole matching with the limiting shaft is provided on the outer circumferential surface of the slide rod;

[0008] When the top plate moves upward, the limiting shaft is inserted into the limiting hole of the slide bar. When the top plate moves downward, the limiting shaft is driven to move out of the limiting hole on the slide bar, so that the limiting shaft loses the limiting of the slide bar.

[0009] As a further solution of the present invention: the front side of the house body is slidably connected to a rain shield, the side of the house body close to the rain shield is rotatably connected to a horizontal axis, a gear is fixedly sleeved on the outer side of the horizontal axis, two groups of transmission teeth are fixedly connected to the inner bottom surface of the rain shield, and a first pull rope is provided on both sides of the horizontal axis.

[0010] As a further solution of the present invention: wind shields are provided on both sides of the main body of the house, and a fixing block is fixedly connected to the front side of the wind shield, and the fixing block is fixed to the side of the main body of the house. Limit rods are fixedly connected to both sides of the main body of the house, and the wind shield passes through the strip holes preset on the limit rods, and there is a gap between the wind shield and the side of the main body of the house.

[0011] As a further solution of the present invention: a top block is slidably arranged between the wind shield and the main body of the house, the side of the top block close to the main body of the house is arranged as an inclined surface, and both sides of the main body of the house are provided with limiting grooves that slide with the top block, one end of the first pull rope passes through the rain shield and is fixedly connected to the outer wall of the horizontal axis, the other end of the first pull rope passes through the fixed block and is fixedly connected to the top block, and when the top block moves between the wind shield and the main body of the house, the wind shield is lifted outward so that the wind shield is arched as a whole.

[0012] As a further solution of the present invention: a traction rope is arranged between the limit rod and the top block, and two ends of the traction rope are fixedly connected to the limit rod and the top block respectively.

[0013] As a further solution of the present invention: a ventilation plate is fixedly connected to the rear side of the building body, one end of the wind shield plate away from the first pull rope extends to both ends of the ventilation plate, a reel is rotatably arranged between the building body and the ventilation plate, a fan blade is fixedly connected to the outer side of the reel, one end of the reel extending to the outer side of the ventilation plate is fixedly connected to a reel, and a second pull rope is fixedly arranged between the reel and the top plate.

[0014] As a further solution of the present invention: end covers are provided at both ends of the sliding rod, the end covers are fixedly connected to the base, the sliding rod is rotatably connected to the end covers, a coil spring is provided inside the end cover, the coil spring is sleeved on the outside of the sliding rod, one end of the coil spring is fixedly connected to the outer circumferential wall of the sliding rod, and the other end of the coil spring is fixedly connected to the inner wall of the end cover.

[0015] As a further solution of the present invention: a side of the top end of the limiting shaft close to the sliding block is arranged as an inclined surface.

[0016] As a further solution of the present invention: a strip groove is provided on one side of the windshield close to the main body of the house, a slide bar is fixedly provided on one side of the top block close to the windshield, and the slide bar is slidably connected to the inside of the strip groove.

[0017] As a further solution of the present invention: a protrusion is fixedly connected to the side of the rain shield close to the main body of the house, and a slide groove matching the protrusion is opened on the side of the main body of the house close to the rain shield, and the cross-sectional shape of the slide groove and the protrusion is set to be T-shaped.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the top plate can be driven to move downward by the second pull rope, thereby driving the limit shaft to move downward and disengage from the sliding rod, so that the limit shaft loses the limit on the sliding block. At this time, under the action of wind force, the main body of the house can be driven to move on the top of the base, and the sliding block can be driven to overcome the elastic force of the second spring and slide inside the groove to achieve a buffering effect, thereby protecting the main body of the house and extending its service life. Through this structure, under daily use, the limit shaft cooperates with the limit hole on the sliding rod to limit the sliding block, so that the main body of the house can be stably placed on the top of the base, which is convenient for use. When the wind force increases, the limit shaft disengages from the sliding rod, so that the main body of the house can slide from the top of the base, thereby avoiding direct confrontation between the main body of the house and the wind force, and protecting it. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 3 is a schematic diagram of the top plate and the second pull rope structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the slider and the slide rod of the present invention;

[0024] Figure 5 is a schematic diagram of a first spring structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the gear and transmission tooth structure of the present invention;

[0026] Figure 7 The present invention Figure 5 A magnified view of the C-section structure;

[0027] Figure 8 The present invention Figure 3 A magnified view of the structure of part B;

[0028] Fig. 9 The present invention Figure 2 A magnified view of the structure of part A;

[0029] Fig.10 It is a schematic diagram of the windshield and the limiting rod structure of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the windshield of the present invention when it is bent;

[0031] Fig.12 The present invention Fig.10 A magnified view of the D-section structure;

[0032] Fig.13 It is a schematic diagram of the fan blade and the fixing frame structure of the present invention;

[0033] Fig.14 It is a schematic diagram of the limit shaft structure and the slide rod structure of the present invention.

[0034] In the figure: 1. main body of the house; 2. first pull rope; 3. base; 4. end cover; 5. cover plate; 6. second pull rope; 7. reel; 8. ventilation plate; 9. limit rod; 10. wind shield; 11. transmission gear; 12. rain shield; 13. gear; 14. fan blade; 15. reel; 16. fixed frame; 17. first spring; 18. through groove; 19. top plate; 20. groove; 21. slider; 22. slide bar; 23. second spring; 24. protrusion; 25. horizontal axis; 26. coil spring; 27. limit axis; 28. limit hole; 29. ​​support rod; 30. traction rope; 31. strip groove; 32. fixed block; 33. limit groove; 34. top block; 35. slide bar. DETAILED DESCRIPTION

[0035] like Figure 1-4As shown, an assembled building body with a long service life includes a base 3 and a house body 1 slidably arranged on the top of the base 3, the top of the house body 1 is fixedly connected with a cover plate 5, specifically, a groove 20 is opened on the top of the base 3, and a slider 21 is fixedly connected to the bottom of the house body 1, the slider 21 is slidably arranged on the front and rear sides of the groove 20, and in order to improve the sliding stability of the slider 21, a slide bar 22 is arranged at the groove 20, the slide bar 22 passes through the slider 21 and is slidably connected to the slider 21, and both ends of the slide bar 22 are the base 3 and extend to the outside of the base 3, the slide bar 22 is slidably connected to the base 3, and a second spring 23 is arranged between the outside of the slider 21 and the inner wall of the groove 20, and the second spring 23 is sleeved on the outside of the slide bar 22.

[0036] In actual use, the house body 1 slides on the top of the base 3. When strong winds occur, the house body 1 is blown to slide on the top of the base 3, thereby driving the slider 21 to overcome the force of the second spring 23 and slide inside the groove 20. The deformation of the second spring 23 can buffer the house body 1 and protect it.

[0037] like Figure 4-5 As shown, however, if the house body 1 is in a sliding state on the top of the base 3 during normal use, it is not convenient to use on the one hand, and on the other hand, frequent compression of the second spring 23 will shorten its service life, thereby affecting the service life of the entire house body 1. Therefore, a through groove 18 is provided at the bottom of the groove 20 on the base 3, and a top plate 19 is slidably connected in the through groove 18. The bottom of the top plate 19 is fixedly connected with the first spring 17, which is conducive to driving the top plate 19 to reset upward in the later stage. The top of the top plate 19 is fixedly connected with a limit shaft 27, and the limit shaft 27 is on the side opposite to the slider 21, while the outer side of the slide rod 22 A limiting hole 28 matching the limiting shaft 27 is provided on the circumferential surface. When the top plate 19 moves upward to insert the limiting shaft 27 into the limiting hole 28 of the slide bar 22, the slide bar 21 can be limited to prevent it from sliding inside the groove 20, thereby maintaining the stability of the house body 1 on the top of the base 3. When strong winds occur, the top plate 19 moves downward to drive the limiting shaft 27 to move out of the limiting hole 28 on the slide bar 22, thereby causing it to lose the limitation on the slide bar 21. At this time, the house body 1 is driven to slide on the top of the base 3 under the action of wind, thereby protecting the house body 1 through the buffering effect of the second spring 23.

[0038] Furthermore, in order to reduce the friction between the limit shaft 27 and the slide rod 22, a ball bearing may be embedded on the outer wall of the limit shaft 27 so that the sliding friction between the limit shaft 27 and the slide rod 22 is changed into rolling friction, thereby reducing the friction between the slide rod 22 and the limit shaft 27.

[0039] like Figure 4-14As shown, a rain shield 12 is slidably connected to the front side of the house body 1, and the rain shield 12 is set to be U-shaped. Specifically, a protrusion 24 is fixedly connected to the side of the rain shield 12 close to the house body 1, and a slide groove matching the protrusion 24 is opened on the side of the house body 1 close to the rain shield 12. Specifically, the cross-sectional shapes of the slide groove and the protrusion 24 are both set to be T-shaped, so as to prevent the protrusion 24 from falling off the slide groove, and the side of the house body 1 close to the rain shield 12 is also rotatably connected to a horizontal axis 25, and a gear 13 is fixedly sleeved on the outer side of the horizontal axis 25. The gear 13 is set on the outer side of the house body 1, and two groups of transmission teeth 11 are fixedly connected to the inner bottom surface of the rain shield 12, and the two groups of transmission teeth 11 are symmetrically distributed about the gear 13, and a first pull rope 2 is set on both sides of the horizontal axis 25.

[0040] Furthermore, wind shields 10 are provided on both sides of the house main body 1, and a fixing block 32 is fixedly connected to the front side of the wind shield 10, and the fixing block 32 is fixed to the side of the house main body 1. At the same time, limit rods 9 are also fixedly connected to both sides of the house main body 1, and the limit rods 9 are arranged on the side of the house main body 1 away from the fixing block 32, and the wind shield 10 passes through the preset strip hole on the limit rod 9. The setting of the fixing block 32 allows a certain gap to be provided between the wind shield 10 and the side of the house main body 1.

[0041] A strip groove 31 is provided on the side of the wind shield 10 close to the main body 1 of the house, and limiting grooves 33 are provided on both sides of the main body 1 of the house, and a top block 34 is slidably connected to the limiting groove 33. The side of the top block 34 close to the main body 1 of the house is set as an inclined surface, and a sliding bar 35 is fixedly provided on the side of the top block 34 close to the wind shield 10, and the sliding bar 35 is slidably connected to the inside of the strip groove 31.

[0042] One end of the first pull rope 2 passes through the rain shield 12 and is fixedly connected to the outer wall of the horizontal axis 25. The first pull rope 2 is slidably connected to the rain shield 12. In addition, the other end of the first pull rope 2 passes through the fixed block 32 and is fixedly connected to the top block 34. The first pull rope 2 is slidably connected to the fixed block 32, and a traction rope 30 is fixedly connected between the limit rod 9 and the top block 34. The wind shield 10 here is made of plastic and has a certain deformation ability. When the top block 34 moves between the wind shield 10 and the main body 1 of the house, the wind shield 10 can be pushed outward so that the wind shield 10 is arched as a whole.

[0043] Furthermore, a ventilation plate 8 is fixedly connected to the rear side of the house body 1, the ventilation plate 8 is set to be U-shaped, and both sides of the ventilation plate 8 are set to be openings, and the end of the wind shield 10 away from the first pull rope 2 extends to the opening to prevent the airflow from entering between the ventilation plate 8 and the house body 1 through the opening, and a U-shaped fixing frame 16 is fixedly connected between the house body 1 and the ventilation plate 8, and a reel 7 is arranged inside the fixing frame 16, and a fan blade 14 is fixedly connected to the outside of the reel 7, and the fan blade 14 is arranged inside the fixing frame 16. When the airflow enters the interior of the ventilation plate 8 through the opening, it passes through the top of the fixing frame 16. Thereby, the fan blades 14 are driven to rotate. At the same time, the end of the reel 7 away from the main body of the house 1 passes through the ventilation plate 8 and extends to the outside of the ventilation plate 8. The reel 7 is rotatably connected to the ventilation plate 8, and the end thereof extending to the outside of the ventilation plate 8 is fixedly connected to the reel 15. A second pull rope 6 is arranged between the reel 15 and the top plate 19. Specifically, the bottom end of the pull rope is fixedly connected to the bottom surface of the top plate 19, and the top end of the pull rope passes through the base 3 and extends upward and is fixedly connected to the reel 15. In order for the second pull rope 6 to stably drive the top plate 19 to move downward, a support rod 29 is rotatably arranged inside the through groove 18, and the second pull rope 6 passes from the outside of the support rod 29.

[0044] During specific use, when encountering strong winds, the influence of wind can drive the rain shield 12 to move on the front side of the house main body 1, thereby driving the transmission gear 11 thereon to move, and the transmission gear 11 is meshed with the gear 13. Therefore, when the rain shield 12 moves, it can drive the gear 13 to rotate, thereby driving the horizontal axis 25 to rotate. During the rotation of the horizontal axis 25, the first pull rope 2 will be wrapped around, thereby driving the top block 34 to move inside the limiting groove 33. Since the side of the top block 34 close to the house main body 1 is set as an inclined surface, when the first pull rope 2 drives the top block 34 to move along the strip groove 31 on the inner side of the wind shield 10, the top block 34 will eventually move out from the limiting groove 33, so that the pressure of the house main body 1 on the top block 34 can prompt the top block 34 to move outward to block the windshield. The wind plate 10 is pushed up outwards. One end of the wind shield 10 is fixedly connected to the main body 1 of the house through the fixing block 32, and the other end passes through the strip hole on the limit rod 9. Therefore, when the top block 34 pushes up the wind shield 10 outwards, the entire wind shield 10 will be in a curved arch shape, and one end thereof at the ventilation plate 8 will be inclined toward the ventilation plate 8. Through this structure, on the one hand, the airflow blown to the side of the main body 1 of the house can be guided to both sides, thereby playing a role in reducing the impact of the airflow and protecting the main body 1 of the house. On the other hand, after passing through the arched wind shield 10, the airflow will flow to the ventilation plate 8, and flow between the ventilation plate 8 and the main body 1 of the house. Moreover, through the guiding effect of the wind shield 10, the airflow in the ventilation plate 8 has a higher flow rate and is guided from the top of the fixing frame 16. The wind blows through the top of the base 3, and the high-speed airflow can drive the fan blades 14 to rotate, thereby driving the reel 7 to rotate. When the reel 7 rotates, the second pull rope 6 can be pulled, and the top plate 19 can be driven to move downward through the second pull rope 6, thereby driving the limit shaft 27 to move downward and disengage from the slide bar 22, so that the limit shaft 27 loses the limit on the slider 21. At this time, under the action of wind force, the house body 1 can be driven to move on the top of the base 3, and the slider 21 can be driven to overcome the elastic force of the second spring 23 and slide inside the groove 20 to achieve a buffering effect, protect the house body 1, and extend its service life. Through this structure, in daily use, the limit shaft 27 cooperates with the limit hole 28 on the slide bar 22 to limit the slider 21, so that The main body 1 of the house is stably placed on the top of the base 3, which is convenient for use. When the wind force increases, the limit shaft 27 is separated from the slide rod 22, so that the main body 1 of the house can slide from the top of the base 3, thereby avoiding direct confrontation between the main body 1 of the house and the wind force, and protecting it. In summary, this device is provided with a wind shield 10. When the wind force is small, the wind shield 10 is at the opening of the ventilation plate 8 to prevent external airflow from passing through the ventilation plate 8, thereby avoiding driving the fan blades 14 to rotate. When the wind force is large, the wind shield 10 will be arched to increase the wind speed inside the ventilation plate 8, drive the fan blades 14 and the scroll 7 to rotate, and have a large traction force to pull the top plate 19 to separate the limit shaft 27 from the slide rod 22, so that the slider 21 slides on the outside of the slide rod 22.

[0045] like Figure 5 , 14 As shown, end covers 4 are provided at both ends of the slide rod 22, the end covers 4 are fixedly connected to the base 3, and the slide rod 22 is rotatably connected to the end covers 4, and a coil spring 26 is provided inside the end cover 4, and the coil spring 26 is sleeved on the outside of the slide rod 22. Specifically, one end of the coil spring 26 is fixedly connected to the outer circumferential wall of the slide rod 22, and the other end of the coil spring 26 is fixedly connected to the inner wall of the end cover 4, and the side of the top end of the limit shaft 27 close to the slider 21 is set as an inclined surface.

[0046] During actual use, when the wind force is strong, the limit shaft 27 is driven downward by the top plate 19, so that the limit shaft 27 is separated from the slide bar 22. At this time, the slide bar 22 can be driven to rotate under the action of the coil spring 26, so that the limit hole 28 on the slide bar 22 is staggered with the limit shaft 27. When the top plate 19 drives the limit shaft 27 to move upward again, the limit shaft 27 will not be inserted into the limit hole 28 on the slide bar 22, but will be against the outside of the slide bar 22. Since the side of the top of the limit shaft 27 close to the slider 21 is set as an inclined surface, when the slider 21 slides on the outside of the slide bar 22 and gradually approaches the limit shaft 27, it can squeeze the limit shaft 27 to move downward, thereby prompting the limit shaft 27 to move downward. The shaft 27 moves downward to the bottom of the slider 21, which is conducive to the stable sliding of the slider 21 along the slider 22 without being limited by the limit shaft 27. When the limit shaft 27 is inserted into the limit hole 28, the slider 21 can be limited to prevent it from sliding on the outside of the slider 22. Therefore, through the above structure, when the wind force is unstable and the fan blade 14 cannot rotate stably, because the slider 22 has been rotated a certain angle under the action of the coil spring 26 and is staggered from the limit shaft 27, the top plate 19 drives the limit shaft 27 to move upward and against the outside of the slider 22, which is conducive to the stable sliding of the slider 21 on the outside of the slider 22, thereby achieving a buffering effect through the second spring 23 to protect the main body 1 of the house.

[0047] Pulleys are provided at the turning points of the first pull rope 2 , the first pull rope 2 passes through the outside of the pulleys, and the pulleys are fixedly connected to the main body 1 of the house.

Claims

1. An assembled building body with a long service life, comprising a base and a house body slidably arranged on the top of the base, the top of the base is provided with a groove, the bottom of the house body is fixedly connected with a slider slidably matched with the groove, the groove is provided with a slide bar penetrating the slide bar and slidably connected with the slide bar, the outer side of the slide bar is provided with a second spring, characterized in that: A through slot is provided at the bottom of the groove on the base, a top plate is slidably connected in the slot, a limit shaft is fixedly connected to the top of the top plate, and a limit hole matching the limit shaft is provided on the outer circumferential surface of the slide rod; When the top plate moves upward, the limit shaft is inserted into the limit hole of the slide bar, and when the top plate moves downward, the limit shaft is driven to move out of the limit hole on the slide bar, causing it to lose the limit on the slide bar; The front side of the housing body is slidably connected with a rain shield, and the side of the housing body close to the rain shield is rotatably connected with a horizontal axis, a gear is fixedly sleeved on the outer side of the horizontal axis, two sets of transmission gears are fixedly connected on the inner bottom surface of the rain shield, and first pull ropes are arranged on both sides of the horizontal axis; Windshields are provided on both sides of the main body of the house, and a fixing block is fixedly connected to the front side of the windshield, and the fixing block is fixed to the side of the main body of the house. Limit rods are fixedly connected to both sides of the main body of the house, and the windshield passes through the strip holes preset on the limit rods, and there is a gap between the windshield and the side of the main body of the house; A top block is slidably arranged between the windshield and the main body of the house, a side of the top block close to the main body of the house is arranged as an inclined surface, and both sides of the main body of the house are provided with limit grooves that are slidably matched with the top block, one end of the first pull rope passes through the rain shield and is fixedly connected to the outer wall of the horizontal axis, and the other end of the first pull rope passes through the fixed block and is fixedly connected to the top block, when the top block moves between the windshield and the main body of the house, the windshield is lifted outward so that the windshield is arched as a whole; A traction rope is arranged between the limit rod and the top block, and two ends of the traction rope are fixedly connected to the limit rod and the top block respectively; A ventilation plate is fixedly connected to the rear side of the building body, and one end of the wind shield away from the first pull rope extends to both ends of the ventilation plate. A reel is rotatably arranged between the building body and the ventilation plate, and a fan blade is fixedly connected to the outer side of the reel. One end of the reel extending to the outer side of the ventilation plate is fixedly connected to a reel, and a second pull rope is fixedly arranged between the reel and the top plate.

2. The prefabricated building body with a long service life according to claim 1, characterized in that: End covers are provided at both ends of the sliding rod, and the end covers are fixedly connected to the base. The sliding rod is rotatably connected to the end covers. A coil spring is provided inside the end cover, and the coil spring is sleeved on the outside of the sliding rod. One end of the coil spring is fixedly connected to the outer circumferential wall of the sliding rod, and the other end of the coil spring is fixedly connected to the inner wall of the end cover.

3. The prefabricated building body with a long service life according to claim 1, characterized in that: A side of the top end of the limiting shaft close to the sliding block is arranged as an inclined surface.

4. The prefabricated building body with a long service life according to claim 1, characterized in that: A strip groove is provided on one side of the windshield close to the main body of the house, and a slide bar is fixedly provided on one side of the top block close to the windshield, and the slide bar is slidably connected to the inside of the strip groove.

5. The prefabricated building body with a long service life according to claim 1, characterized in that: A protrusion is fixedly connected to one side of the rain shield close to the main body of the house, and a slide groove matched with the protrusion is opened on one side of the main body of the house close to the rain shield. The cross-sectional shapes of the slide groove and the protrusion are both set to be T-shaped.

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