Protective device for building hoistway

Abstract

The invention relates to the technical field of hoistway protection, and particularly discloses a protective device for a building hoistway, which comprises a protective baffle plate and a mounting mechanism positioned on the rear side surface of the protective baffle plate, the protection sideboard is a first protection board, and the first protection board is installed on the outer side of a housing building hoistway. The mounting mechanism comprises a first supporting rod, a first connecting shell, a push rod, an adjusting rod and an ejector head, the top end of the first supporting rod is fixedly connected to the back face of the first protective plate, the middle of the first supporting rod is slidably connected to the inner side of the first connecting shell, and the push rod is connected to the outer side of the first connecting shell; the top end of the push rod is telescopically connected with an adjusting rod, a connecting piece is fixed to the top end of the adjusting rod, and a top head is fixed to the top end of the connecting piece. The protection device for the building hoistway does not need to be fixed through trepanning, can be matched with hoistways with different widths for protection and can stably cover the outer side of the hoistway, the protection effect is guaranteed, and safety accidents are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and more particularly to the technical field of building construction shaft protection, and in particular to a protection device for a building construction shaft. Background Art

[0002] The hoistway in building construction generally refers to the elevator hoistway. The elevator hoistway is the space where the car and counterweight device or (and) the hydraulic cylinder plunger move. This space is bounded by the bottom of the hoistway pit, the hoistway wall and the hoistway top. For entry and exit, an entrance is opened at each floor station. During the building construction process, in order to prevent construction workers from accidentally falling into the hoistway, hoistway protection devices need to be installed to protect the openings on each floor; For example, the invention with application publication number CN 111946079 A discloses a protective net device for a shaft in a construction site, including: a frame and a rotating baffle, the frame is provided with fixed legs around, the rotating baffle is provided with a plurality of them and arranged in a row and installed in the frame, the rotating baffle is provided with connecting blocks at the upper and lower ends, the connecting blocks are rotatably connected with the slider, and the frame is provided with slide grooves on the upper and lower sides of the rotating baffle, the slider is located in the slide groove, the top of the slider is provided with a limiting groove, and an electric telescopic block engaged with the limiting groove is provided above the slide groove at a corresponding position of the limiting groove. The present invention has three states, one is a fully closed state, at which the rotating baffle is fixed in position and cannot be rotated, and the rotating baffle completely covers the shaft opening, one is a semi-closed state, at which the rotating baffle is fixed in position, but the rotating baffle can be rotated, and there is a gap between the rotating baffles to facilitate construction personnel to check the shaft opening, and another is an open state, at which the rotating baffle can be moved to expose the shaft opening; Another example is the utility model with the authorization announcement number CN 209620654 U, which discloses an assembled protection net for a shaft in a construction site, including a main support rod, a drill bit and a secondary support rod. A placement groove is reserved inside the main support rod, and a fixed rod is installed in the middle of the placement groove, and a tooth pattern is arranged in the middle of the bottom of the main support rod, and the tooth pattern is in contact with the fixed rod. The drill bit is fixed to the bottom of the fixed rod, and a main cross bar is installed in the middle of the main support rod, and a movable groove is reserved inside the main cross bar, and a secondary cross bar is installed inside the movable groove. A reserved groove is opened inside the main support rod, and a limited groove is arranged inside the reserved groove. One end of the secondary cross bar is connected to the limited groove, and a docking groove is reserved on the upper end face of the main cross bar. The assembled protection net for a shaft in a construction site facilitates the assembly and storage of the guardrail through the installation and disassembly of the support rod and the cross bar, and is also convenient for adjusting different lengths to protect shafts of different ranges on the construction site; However, the current protective devices for building shafts still have certain disadvantages in actual use, such as: In general, the shaft protection is mostly carried out with a simple guard plate structure. The guard plate is simply placed on the outside of the shaft, lacks fixation, and has poor protection effect, affecting safety. Some shaft protection devices are fixed to the shaft, but holes in the shaft need to be opened for fixing, which affects the shaft structure. In addition, the fixing strength is fixed and buffering is not possible. In addition, the shaft protection device generally has a fixed structure, which is not conducive to being installed and used for protection of shaft openings of different specifications; Therefore, we propose a protective device for building a well in order to solve the above-mentioned problems. Summary of the invention

[0003] The purpose of the present invention is to provide a protective device for a building shaft to solve the problem that the current shaft protective device proposed in the above background technology needs to be fixed with holes or directly placed for use, has a slow installation speed, affects the wall structure, has a poor protective effect, affects safety, and is not conducive to rapid adaptation and use on shafts of different specifications.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: A protective device for a building shaft, comprising: a protective baffle and a mounting mechanism located on the rear side of the protective baffle; The protective baffle is a first guard plate, and the first guard plate is installed on the outer side of the building shaft; The mounting mechanism comprises a first support rod, a first connecting shell, a push rod, an adjusting rod and a top head, the top end of the first support rod is fixedly connected to the back side of the first guard plate, the middle part of the first support rod is slidably connected to the inner side of the first connecting shell, the push rod is connected to the outer side of the first connecting shell, the top end of the push rod is telescopically connected to the adjusting rod, the top end of the adjusting rod is fixed with a connecting piece, the top end of the connecting piece is fixed with a top head, and the outer side surface of the top head is fixed with an anti-skid pad for anti-skid; A pressure block is protruding from one side of the first support rod near the top of the push rod, a contact block is integrally fixed to the top of the push rod, and the contact surfaces of the contact block and the pressure block are inclined.

[0005] Preferably, a first fixing plate is fixedly connected to the end of the first support rod, and the first fixing plate is arranged in parallel with the rear side surface of the first connecting shell, and a first spring is connected between the first fixing plate and the first connecting shell.

[0006] Preferably, the push rod forms a left-right sliding structure on the inner side of the first connecting shell, the top end of the push rod is inserted into the end of the adjusting rod, through holes are provided inside the push rod and the adjusting rod, and are fixedly connected by fixing bolts through the through holes.

[0007] Preferably, the connecting member is a first fixing rod, and the first fixing rod is fixedly connected between the adjusting rod and the top head.

[0008] Preferably, the mounting mechanism includes a second support rod and a second connecting shell, the top end of the second support rod is fixedly connected to the back side of the first support rod, the middle part of the second support rod is slidably connected to the inside of the second connecting shell, the end of the second support rod is fixed with a second fixing plate, the first spring is symmetrically installed between the second fixing plate and the second connecting shell, the left and right sides of the second connecting shell are symmetrically slidably connected with push rods, and the left and right sides of the middle part of the second support rod are symmetrically protruding with pressure blocks.

[0009] Preferably, the connecting member is a telescopic structure composed of a connecting tube, an adjusting tube and a second fixed rod, the end of the connecting tube is fixedly connected to the top of the adjusting rod, the top of the connecting tube is connected to the adjusting tube, the top of the adjusting tube is telescopically connected to the second fixed rod, and a second spring is arranged between the second fixed rod and the adjusting tube, and the top of the second fixed rod is fixedly connected to the top head.

[0010] Preferably, the connecting cylinder and the adjusting cylinder are correspondingly threadedly connected, and the top end of the adjusting cylinder is externally in a polygonal structure, and the insides of the adjusting cylinder and the second fixing rod are both provided with grooves for assembling the second spring.

[0011] Preferably, the protective baffle is a detachable protective baffle composed of a second guard plate and a third guard plate, the sides of the second guard plate and the third guard plate are both provided with connecting grooves, and the interior of the connecting groove is telescopically connected with a telescopic rod.

[0012] Preferably, a protective net is sleeved on the outer side of the middle portion of the telescopic rod, and the upper and lower ends of the protective net are fixedly connected to the second protective plate and the third protective plate respectively.

[0013] Preferably, an operating door is provided on the surface of the protective baffle, the operating door is correspondingly provided between the connecting member, and the operating door is rotatably connected to the protective baffle through a hinge.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: the protective device for the building shaft does not need to be fixed with holes, can be adapted to shafts of different widths for protection, can stably cover the outside of the shaft, ensure the protection effect, and avoid safety accidents; 1. This solution is provided with a push rod, an adjusting rod and a top head. The push rod and the adjusting rod are fixedly connected by fixing bolts, so that the telescopic amount can be adjusted, so as to adjust the distance between the top heads on both sides, and to facilitate the use of wells of different widths. Moreover, the push rod is fixed by extrusion, and no hole is required, which reduces safety steps and speeds up installation. 2. In this solution, a first support rod, a pressure block and a contact block are provided. When the first support rod slides toward the rear side of the first connection shell, the first support rod presses the contact block through the pressure block, so that the push rod slides toward the outside inside the first connection shell, thereby increasing the pressure between the head and the wellbore and improving the stability of the installation; 3. In this solution, a connecting tube, an adjusting tube and a second fixing rod are provided. The adjusting tube can be extended and retracted through the threaded connection between the adjusting tube and the connecting tube, and the adjusting tube squeezes the second fixing rod through the second spring, further enhancing the friction between the anti-slip pad and the wellbore, ensuring the installation stability, and enhancing the buffering effect; 4. In this solution, a second support rod, a second connecting shell and a second fixing plate are provided. The second support rod is connected to the second connecting shell, and push rods are connected to both sides of the second connecting shell to reduce occupancy. At the same time, the pressing blocks symmetrically protruding from the outside of the second support rod are used to ensure the squeezing effect, which is convenient for assembly and is conducive to use in smaller well openings. 5. In this solution, a second guard plate, a third guard plate and a protective net are provided. The second guard plate and the third guard plate are separated, and the upper and lower ends of the protective net are respectively fixed to the second guard plate and the third guard plate, so that the second guard plate and the third guard plate can be conveniently unfolded for use to increase the space area, and the second guard plate and the third guard plate can be retracted for easy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a schematic diagram of the front structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the back structure of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the structure of the operating door of the present invention in an open state; Figure 4 This is a schematic diagram of the cross-section structure of the installation mechanism of Example 1 of the present invention; Figure 5 This is a schematic diagram of the back structure of Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the cross-section structure of the installation mechanism of Example 2 of the present invention; Figure 7 This is a schematic diagram of the back structure of Embodiment 3 of the present invention; Figure 8 This is a schematic diagram of the cross-section structure of the installation mechanism of Example 3 of the present invention; Fig. 9 This is a schematic diagram of the exploded structure of the installation mechanism of Example 3 of the present invention; Fig.10This is a schematic diagram of the front structure of the protective baffle of Example 4 of the present invention; Fig.11 This is a schematic diagram of the side cut structure of the protective baffle of Example 4 of the present invention.

[0016] In the figure: 1. first guard plate; 2. first support rod; 3. first connecting shell; 4. first fixing plate; 5. first spring; 6. push rod; 7. contact block; 8. pressure block; 9. adjusting rod; 10. fixing bolt; 11. first fixing rod; 12. top head; 13. anti-skid pad; 14. operating door; 15. connecting tube; 16. adjusting tube; 17. second fixing rod; 18. second spring; 19. second support rod; 20. second connecting shell; 21. second fixing plate; 22. second guard plate; 23. third guard plate; 24. telescopic rod; 25. connecting groove; 26. protective net. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0018] Embodiment 1: In order to solve the problem that the current shaft protection device directly places the guard plate outside the shaft, the protection effect is poor, or some guard plates need to be punched to complete the fixation, the installation speed is slow, and the building structure is damaged, and later repairs are required, which affects the construction efficiency; See also Figure 1-4 , the present invention provides the following technical solutions: a protective device for a building shaft, comprising: a first guard plate 1, a first support rod 2, a first connecting shell 3, a first fixing plate 4, a first spring 5, a push rod 6, a contact block 7, a pressure block 8, an adjustment rod 9, a fixing bolt 10, a first fixing rod 11, a top head 12, an anti-slip pad 13 and an operating door 14; The protective baffle is a first guard plate 1, which is installed on the outer side of a building shaft; the installation mechanism includes a first support rod 2, a first connecting shell 3, a push rod 6, an adjusting rod 9 and a top head 12. The top end of the first support rod 2 is fixedly connected to the back side of the first guard plate 1, the middle part of the first support rod 2 is slidably connected to the inner side of the first connecting shell 3, the push rod 6 is connected to the outer side of the first connecting shell 3, the top end of the push rod 6 is telescopically connected with the adjusting rod 9, the top end of the adjusting rod 9 is fixed with a connecting piece, the top end of the connecting piece is fixed with a top head 12, and the outer side surface of the top head 12 is fixed with an anti-skid pad 13 for anti-skid, a pressure block 8 is protrudingly provided on one side of the first support rod 2 close to the top end of the push rod 6, a contact block 7 is integrally fixed to the top end of the push rod 6, and the contact surface of the contact block 7 and the pressure block 8 is inclined, the end of the first support rod 2 is fixedly connected to the first fixed plate 4, and the first fixed plate 4 is parallel to the rear side of the first connecting shell 3, and a first spring 5 is connected between the first fixed plate 4 and the first connecting shell 3.

[0019] The push rod 6 forms a left-right sliding structure on the inner side of the first connecting shell 3, and the top end of the push rod 6 is inserted into the end of the adjusting rod 9. Through holes are opened in the push rod 6 and the adjusting rod 9, and are fixedly connected by fixing bolts 10 through the through holes. The connecting piece is a first fixing rod 11, and the first fixing rod 11 is fixedly connected between the adjusting rod 9 and the top head 12. An operating door 14 is provided on the surface of the protective baffle, and the operating door 14 is correspondingly arranged with the connecting piece. The operating door 14 is rotatably connected to the protective baffle through a hinge.

[0020] Among them, when in use, the orthographic projection area of ​​the first guard plate 1 is larger than the orthographic projection area of ​​the opening of the building well, and the well can be completely covered by the first guard plate 1. At the same time, the push rod 6 and the adjusting rod 9 in the installation mechanism are fixedly connected by the fixing bolt 10. The extension length of the adjusting rod 9 can be adjusted according to the width of the well by the extension of the adjusting rod 9 inside the push rod 6. After being fixed by the fixing bolt 10, the spacing between the top heads 12 on both sides can be stably adjusted to adapt to the use of the well, and the outer side of the top head 12 is provided with an anti-slip pad 13 with an elastic structure, so that it has a certain amount of extension and contraction, which can ensure that it is fixedly connected to the inside of the well; The adjusting rod 9 is squeezed and connected to the inner side of the well through the top head 12 and the anti-skid pad 13, and the push rod 6 is connected to the first support rod 2 and the first guard plate 1 through the first connecting shell 3, so that the first guard plate 1 can be erected on the outside of the well, wherein a certain gap is reserved between the first guard plate 1 and the outer side of the well, which can be used for ventilation and buffering at the same time, wherein the first support rod 2 can be retracted inside the first connecting shell 3, and the first support rod 2 automatically fits with the top surface of the contact block 7 in a normal state to maintain the stability of the push rod 6. When the first supporting rod 2 slides toward the rear side of the first connecting shell 3, the first supporting rod 2 squeezes the contact block 7 through the pressing block 8, so that the push rod 6 slides outward from the inside of the first connecting shell 3, thereby increasing the pressure between the top head 12 and the wellbore, and improving the installation stability, that is, when the first guard plate 1 is hit, the first guard plate 1 hits the wellbore, and the impact force causes the first supporting rod 2 to slide, thereby increasing the pressure of the top head 12, ensuring that the friction between the anti-slip pad 13 and the wellbore is increased, and avoiding the first guard plate 1 from being separated, thereby ensuring the protection effect; At the same time, an operating door 14 that can be rotated outward is opened inside the first guard plate 1. The operating door 14 can be opened, and the hand can be put behind the first guard plate 1 to loosen the fixing bolts 10 to complete the disassembly. There is no need to drill holes around the wellbore to fix it, which reduces the difficulty of installation and reduces the later construction processes.

[0021] By adopting the above technical solution, it can be installed on the inside of shafts of different widths without drilling and can be installed quickly. At the same time, it can provide protection in the event of a collision and can enhance the installation strength through the impact force, thereby avoiding the protective baffle from falling off and ensuring the protective effect.

[0022] Example 2: Based on Example 1, in order to solve the problem of incompatibility and poor buffering effect when used for wells of different widths, please refer to Figure 5-6 The present invention also provides the following technical solutions: it also includes a connecting tube 15, an adjusting tube 16, a second fixing rod 17, and a second spring 18. The connecting piece is a retractable structure composed of the connecting tube 15, the adjusting tube 16 and the second fixing rod 17. The end of the connecting tube 15 is fixedly connected to the top of the adjusting rod 9. The top of the connecting tube 15 is connected to the adjusting tube 16. The top of the adjusting tube 16 is telescopically connected to the second fixing rod 17, and a second spring 18 is arranged between the second fixing rod 17 and the adjusting tube 16. The top of the second fixing rod 17 is fixedly connected to the top head 12. The connecting tube 15 and the adjusting tube 16 are correspondingly threadedly connected. The top of the adjusting tube 16 is polygonal in structure, and the insides of the adjusting tube 16 and the second fixing rod 17 are both provided with grooves for assembling the second spring 18.

[0023] Among them, the connecting piece is replaced by a telescopic structure composed of a connecting tube 15, an adjusting tube 16 and a second fixing rod 17 on the basis of Example 1. After the push rod 6 and the adjusting rod 9 are telescopically adjusted, a certain distance is maintained between the anti-slip pad 13 on the outside of the top head 12 and the well, so that the first guard plate 1 can be quickly supported on the outside of the well, so that the installation mechanism can be accommodated inside the well. At this time, the operating door 14 is opened, and the hand is inserted into the first guard plate 1. The adjusting tube 16 is rotated through the outer polygonal structure on the top of the adjusting tube 16, and the threaded part between the adjusting tube 16 and the connecting tube 15 is used. The adjusting tube 16 can be extended and retracted, so that the adjusting tube 16 slides outward so that the top head 12 fits with the well through the anti-skid pad 13. At the same time, the adjusting tube 16 is continuously rotated so that the adjusting tube 16 squeezes the second fixing rod 17 through the second spring 18, further enhancing the friction between the anti-skid pad 13 and the well, ensuring the installation stability. At the same time, when the first guard plate 1 is hit, the pressing block 8 squeezes the contact block 7 so that the push rod 6, the adjusting rod 9, the connecting tube 15 and the adjusting tube 16 are squeezed outward as a whole, and the second spring 18 is squeezed at the same time, so that the buffering effect can be enhanced by the second spring 18. By adopting the above technical solution, it can be further adapted for use inside different shafts, and the buffer distance can be enhanced, thereby further improving the buffer effect and reducing the occurrence of safety accidents.

[0024] Example 3: Based on Example 1, in order to solve the problem that the adaption installation cannot be performed for a smaller well, such as the well top opening, please refer to Figure 7-9 The present invention also provides the following technical solution: it also includes a second support rod 19, a second connecting shell 20 and a second fixing plate 21, the installation mechanism includes the second support rod 19 and the second connecting shell 20, the top end of the second support rod 19 is fixedly connected to the back of the first support rod 2, the middle part of the second support rod 19 is slidably connected to the inside of the second connecting shell 20, the end of the second support rod 19 is fixed with a second fixing plate 21, the first spring 5 is symmetrically installed between the second fixing plate 21 and the second connecting shell 20, the left and right sides of the second connecting shell 20 are symmetrically slidably connected with push rods 6, and the left and right sides of the middle part of the second support rod 19 are symmetrically protruding with pressure blocks 8.

[0025] The second connecting shell 20 is connected by the second supporting rod 19, and the push rods 6 are connected to both sides of the second connecting shell 20 to reduce the occupancy. At the same time, the pressing block 8 symmetrically protruding from the outer side of the second supporting rod 19 ensures the extrusion effect, which is convenient for assembly and buffering. The end of the second supporting rod 19 is connected to the first spring 5 and the second connecting shell 20 through the second fixing plate 21 to form an elastic structure, which can automatically slide forward after the first guard plate 1 is not impacted and extruded, so that it returns to its initial state. By adopting the above technical solution, the space occupied by the back mounting mechanism can be further reduced, which is conducive to use in smaller shaft openings, such as the top opening of a building shaft, the opening of an outdoor inspection well in a building, etc.

[0026] Embodiment 4: Based on the above embodiments, in order to solve the problem that when the shaft width or height is too large, it is not easy to adapt, and the shaft protection device is too large to be stored and carried, please refer to Figure 10-11 The present invention also provides the following technical solution: it also includes a second guard plate 22, a third guard plate 23, a telescopic rod 24, a connecting groove 25 and a protective net 26. The protective baffle is a detachable protective baffle composed of the second guard plate 22 and the third guard plate 23. The sides of the second guard plate 22 and the third guard plate 23 are both provided with connecting grooves 25. The inside of the connecting groove 25 is telescopically connected with the telescopic rod 24. The middle outer side of the telescopic rod 24 is sleeved with a protective net 26. The upper and lower ends of the protective net 26 are respectively fixedly connected to the second guard plate 22 and the third guard plate 23.

[0027] Among them, the second guard plate 22 and the third guard plate 23 are separately arranged, and a connecting groove 25 is opened on the side of the second guard plate 22 and the third guard plate 23 for telescopic connection with the telescopic rod 24. At the same time, the side of the protective net 26 is inserted and connected by the telescopic rod 24, and the upper and lower ends of the protective net 26 are respectively fixed to the second guard plate 22 and the third guard plate 23 to prevent the protective net 26 from falling off. The second guard plate 22 and the third guard plate 23 can be conveniently unfolded for use to increase the space area, and the second guard plate 22 and the third guard plate 23 can be retracted to facilitate storage.

[0028] By adopting the above technical solution, it can be used for protection in a wider shaft opening to ensure the protection effect, and it can be conveniently stored to reduce space occupation and is easy to carry, and is suitable for use in multi-story buildings.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention; the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in the field. In addition, the directional nouns such as up, down, left, right, front and back in the text only represent their relative positions rather than absolute positions.

[0030] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective device for a building shaft, comprising: A protective baffle and a mounting mechanism located on the rear side of the protective baffle; It is characterized in that The protective baffle is a first guard plate (1), and the first guard plate (1) is installed on the outer side of the building shaft; The mounting mechanism comprises a first support rod (2), a first connecting shell (3), a push rod (6), an adjusting rod (9) and a top head (12); the top end of the first support rod (2) is fixedly connected to the back side of the first guard plate (1); the middle part of the first support rod (2) is slidably connected to the inner side of the first connecting shell (3); the push rod (6) is connected to the outer side of the first connecting shell (3); the top end of the push rod (6) is telescopically connected to the adjusting rod (9); the top end of the adjusting rod (9) is fixed with a connecting piece; the top end of the connecting piece is fixed with a top head (12); and the outer side surface of the top head (12) is fixed with an anti-skid pad (13) for preventing skidding; A pressure block (8) is protrudingly provided on one side of the first support rod (2) close to the top end of the push rod (6), a contact block (7) is integrally fixed to the top end of the push rod (6), and contact surfaces between the contact block (7) and the pressure block (8) are inclined.

2. A protective device for a building shaft according to claim 1, characterized in that: The end of the first support rod (2) is fixedly connected to a first fixing plate (4), and the first fixing plate (4) is arranged parallel to the rear side of the first connecting shell (3), and a first spring (5) is connected between the first fixing plate (4) and the first connecting shell (3).

3. A protective device for a building shaft according to claim 1, characterized in that: The push rod (6) forms a left-right sliding structure on the inner side of the first connecting shell (3), and the top end of the push rod (6) is inserted into the inner side of the end of the adjusting rod (9). Through holes are provided inside the push rod (6) and the adjusting rod (9), and the two are fixedly connected by fixing bolts (10) through the through holes.

4. A protective device for a building shaft according to claim 1, characterized in that: The connecting member is a first fixing rod (11), and the first fixing rod (11) is fixedly connected between the adjusting rod (9) and the top head (12).

5. A protective device for a building shaft according to claim 1, characterized in that: The mounting mechanism comprises a second support rod (19) and a second connecting shell (20); the top end of the second support rod (19) is fixedly connected to the back side of the first support rod (2); the middle part of the second support rod (19) is slidably connected to the inside of the second connecting shell (20); a second fixing plate (21) is fixed to the end of the second support rod (19); a first spring (5) is symmetrically installed between the second fixing plate (21) and the second connecting shell (20); push rods (6) are symmetrically slidably connected to the left and right sides of the second connecting shell (20); and pressure blocks (8) are symmetrically protruded on the left and right sides of the middle part of the second support rod (19).

6. A protective device for a building shaft according to claim 1, characterized in that: The connecting member is a telescopic structure composed of a connecting tube (15), an adjusting tube (16) and a second fixing rod (17); the end of the connecting tube (15) is fixedly connected to the top of the adjusting rod (9); the top of the connecting tube (15) is connected to the adjusting tube (16); the top of the adjusting tube (16) is telescopically connected to the second fixing rod (17); a second spring (18) is provided between the second fixing rod (17) and the adjusting tube (16); and the top of the second fixing rod (17) is fixedly connected to the top end (12).

7. A protective device for a building shaft according to claim 1, characterized in that: The connecting cylinder (15) and the adjusting cylinder (16) are correspondingly threadedly connected, the top end of the adjusting cylinder (16) is externally in a polygonal structure, and the insides of the adjusting cylinder (16) and the second fixing rod (17) are both provided with grooves for assembling the second spring (18).

8. A protective device for a building shaft according to claim 1, characterized in that: The protective baffle is a detachable protective baffle consisting of a second protective plate (22) and a third protective plate (23), the sides of the second protective plate (22) and the third protective plate (23) are both provided with connecting grooves (25), and the interior of the connecting groove (25) is telescopically connected to a telescopic rod (24).

9. A protective device for a building shaft according to claim 1, characterized in that: A protective net (26) is sleeved on the outer side of the middle portion of the telescopic rod (24), and the upper and lower ends of the protective net (26) are respectively fixedly connected to the second protective plate (22) and the third protective plate (23).

10. A protective device for a building shaft according to claim 1, characterized in that: An operating door (14) is provided on the surface of the protective baffle, the operating door (14) and the connecting member are arranged correspondingly, and the operating door (14) is rotatably connected to the protective baffle via a hinge.

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