Protective fence for house building

Abstract

The invention relates to the technical field of building protection, and discloses a protective fence for house building, which comprises a fixing frame and a retractable protective fence, a bottom bracket is integrally and fixedly connected to the middle of the bottom of the fixing frame, a lifting adjusting mechanism is connected to the interior of the bottom bracket, and two ends of the lifting adjusting mechanism extend to be fixedly connected with movable supporting structures. The movable supporting structures are positioned below the bottom bracket and are limited and connected to two ends of the fixing frame; the retractable protective fences are of a symmetrical structure and are fixedly arranged on the two sides of the fixing frame, each retractable protective fence comprises a fixing frame, a supporting column, a first protective belt and a protective belt winding device, the fixing frame and the protective belt winding device are installed and distributed in the fixing frame, and the first protective belt is connected to the output end of the protective belt winding device and connected to the outer portion of the fixing frame in a penetrating mode. The supporting structure is manually controlled to be adjusted and moved up and down so as to ascend, store and hide or descend, support and move, different scenes and requirements can be met, the protective belt can be conveniently stored or unfolded towards the two sides, space is saved, and safety protection is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of building protection, and specifically to a protective fence for housing construction. Background Art

[0002] The protective fence for housing construction is set at the construction site of housing buildings, which is used to prevent external personnel from entering, ensure safety, and also play a certain warning role to remind people to pay attention to safety. Especially in areas with potential dangers at the construction site, the materials of the protective fence are diverse, and common ones include steel, aluminum alloy, stainless steel, plastic, etc.

[0003] Most of the traditional protective fences for housing construction use hard materials for safety protection, which require manual handling or disassembly. The operation and installation process is complex and time-consuming, increasing the construction cost and occupying a large amount of space. It cannot be quickly folded, stored, and carried, and its application range is relatively limited, making it difficult to meet the safety protection requirements of building construction sites. Therefore, corresponding technical solutions need to be designed to solve this problem. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a protective fence for housing construction, which solves its technical problems.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A protective fence for housing construction, including a fixed frame and a retractable protective fence. The fixed frame is of an N-shaped structure, and a bottom bracket is integrally and fixedly connected to the middle of the bottom. The bottom bracket is of a U-shaped structure, and a lifting and adjusting mechanism is connected inside. The two ends of the lifting and adjusting mechanism extend and are fixedly connected to a moving support structure. The moving support structure is located below the bottom bracket and is connected to the two ends of the fixed frame in a limiting manner; The retractable protective fence is symmetrically fixed on both sides of the fixed frame. The retractable protective fence includes a fixed frame, support columns, a first protective belt, and a protective belt winding device. The fixed frame is of a hollow structure, and the protective belt winding device is installed and distributed inside the fixed frame. The first protective belt is connected to the output end of the protective belt winding device and penetrates and is connected to the outside of the fixed frame. A limiting backing plate is fixedly arranged at the outer end of the first protective belt, and connecting blocks are fixedly distributed at the outer end of the limiting backing plate. The support columns are fixedly arranged at the outer ends of the connecting blocks in a cylindrical structure.

[0006] Preferably, a lifting device is welded to the upper end of the fixed frame; limiting grooves are provided on both sides of the fixed frame, and the movable support structure includes an end plate, a universal wheel and a limiting shaft, the universal wheel is installed at the bottom corner of the end plate, the limiting shaft is fixedly distributed on both sides of the end plate, and the limiting shaft passes through the limiting sliding connection to the limiting groove; the lifting device is used to lift the fixed frame and the entire equipment by hand, and the entire equipment is lightweight and can be lifted with one hand, the end plate is used to support multiple sets of universal wheels downward, the universal wheels are used to contact the ground for stable movement, which is convenient for mobile use in a building construction site and has a wide range of adaptability, and the limiting shaft is used to assist the end plate in limiting sliding at the limiting groove, so that the overall lifting and lowering adjustment of the movable support structure is more stable and the shaking coefficient is reduced.

[0007] Preferably, the lifting and lowering adjustment mechanism includes a screw rod, a fixed gear plate, a slide cylinder, a moving ring, a convex plate and a hand-held operating structure, the upper and lower ends of the screw rod are rotatably connected with an axle seat 1, the axle seat 1 is respectively fixedly arranged in the middle of the fixed frame and the bottom bracket, the slide cylinder is connected to the outside of the screw rod by a thread, the moving ring is arranged on the outside of the slide cylinder, the convex plate is symmetrically fixedly arranged on the outer side wall of the moving ring, the outer end of the convex plate is fixedly provided with an auxiliary rod 1 in an L-shaped structure, the outer end of the auxiliary rod 1 is fixedly connected downwardly with an auxiliary rod 2, and the lower ends of the auxiliary rod 2 are fixedly arranged at the top two ends of the end plate; auxiliary plates are fixedly arranged on both sides of the bottom bracket, The auxiliary rod 2 passes through the limited sliding connection to the outer end of the auxiliary plate; the shaft seat 1 is used for stably rotating the support screw, the screw is used for adjusting the height of the slide cylinder and the movable ring up and down through the thread, the convex plate is used to extend to both sides of the movable ring to fix the auxiliary rod 1 in an L-shaped structure, the auxiliary rod 1 in the L-shaped structure is used to fix the auxiliary rod 2 downward, and the auxiliary rod 2 is used to fix the support to the end plate so as to drive the overall lifting and lowering adjustment of the movable support structure. A through hole is opened at the outer end of the auxiliary plate, and the auxiliary rod 2 is located at the through hole for limited sliding adjustment, which provides additional limit and support for the lifting process, ensures the stability of the lifting process, and avoids shaking or tilting during the adjustment process.

[0008] Preferably, the fixed gear disk is fixed on the outside of the screw rod near the upper end; the hand-held operating structure includes a rotating rod, a second shaft seat, a bracket plate and a driving gear disk, the bracket plate is an L-shaped plate structure fixedly arranged at the bottom of the fixed frame, the second shaft seat is respectively connected to the inside of the fixed frame and fixed to the upper end of the bracket plate, the rotating rod is rotatably connected to the inside of the second shaft seat, and the driving gear disk is fixedly arranged on the outside of the rotating rod and located between the second shaft seats; the bracket plate with an L-shaped plate structure is used to fix the second shaft seat to the bottom of the fixed frame, the second shaft seat is used to stably rotate and support the rotating rod, the rotating rod is used to drive the driving gear disk to rotate, and the driving gear disk is used to engage the fixed gear disk to control the rotation of the screw rod.

[0009] Preferably, an operating rod with a Z-shaped structure is fixedly arranged on the rotating rod extending upward, and a handle is rotatably connected to the upper end of the operating rod; positioning holes are formed and distributed in the middle of the fixed frame, and the positioning holes are located around the upper shaft seat two; a positioning block is fixedly arranged on the outer part of the operating rod, an activity hole is formed in the positioning block, a positioning rod is connected through the activity hole, a support plate is fixedly arranged at the upper end of the positioning rod, a fixed ring is fixedly arranged at the upper end of the support plate, and a spring is fixedly arranged between the bottom of the support plate and the upper end of the positioning block, and the spring is located outside the positioning rod; the handle is used for manually rotating and controlling the operating rod, the operating rod with a Z-shaped structure is used for rotating and controlling the rotating rod in an annular track, the activity hole is used for telescopic activity to adjust the positioning rod, the positioning rod is used for inserting downward into the positioning hole to lock the manual operation structure and avoid misoperation, the support plate and the fixed ring are used for manually stretching and operating the positioning rod, and the spring is used for elastically supporting the support plate upward in the activity hole.

[0010] Preferably, through holes are formed and distributed at the outer end of the fixed frame, and the first protective belt is connected through the inside of the through holes; a bottom column is connected to the bottom of the support column, a support is fixedly arranged at the bottom of the bottom column, the lower end of the outer side of the support column is connected through a thread with an adjusting bolt, an adjusting nut is fixedly arranged at the outer end of the adjusting bolt, an internal hexagonal empty groove is formed in the outer end of the adjusting nut, and a rotating plate is fixedly distributed on the outer side wall of the adjusting nut; the through holes are used for limiting and adjusting the first protective belt, facilitating stretching operation, and the small hole groove specification prevents rainwater from entering. The bottom column is used for extending downward the support column to adjust the height of the support, the support is used for stably supporting the ground and fixedly supporting the support column upward, the adjusting bolt and the adjusting nut are used for tightening and loosening adjustment so that the height of the support column can be finely adjusted, and the rotating plate is used for manual rotation operation. By rotating the adjusting nut to drive the adjusting bolt to move up and down, the height of the support column is adjusted, ensuring that the whole guardrail is in a horizontal state, improving the stability and protection effect of the guardrail.

[0011] Preferably, a hand-held rod frame is fixedly arranged in the middle of the outer side of the support column, and positioning rods are fixedly distributed at the front and rear ends of the support column; the hand-held rod frame is used for manually stretching and moving the support column, and multiple groups of positioning rods are used for stably supporting the support column to the positioning seat.

[0012] Preferably, a positioning seat is provided at a position corresponding to the positioning rod, the positioning seat is fixedly arranged at the outer end of the fixing frame and is located at the front and rear ends of the protective strip one, and a sliding groove is provided at the middle part of the positioning seat near the outer end; a plug hole 1 is provided above the outer end of the positioning seat at the upper end, and a plug hole 2 is provided below the outer end of the positioning seat at the upper end, and the sides of the plug hole 1 and the plug hole 2 are provided with extension grooves, and the upper and lower extension grooves are in a cross-shaped structure; a latch is plugged into the inside of the plug hole 1 and the plug hole 2, a convex shaft plate is fixedly provided at the bottom of the plug, and a pull ring is fixedly provided at the upper end of the plug; the sliding groove is used for sliding the embedded support positioning rod, the plug hole 1 is used to pass the plug, the plug hole 2 is used to plug the positioning support plug, and the extension groove is used to slide and insert the convex shaft plate, so that the plug is more stable after insertion, so that the guardrail can be stably positioned and fixed in the storage state, effectively improving the safety and reliability of the guardrail, and avoiding safety accidents caused by accidental loosening of the protective strip one.

[0013] Preferably, the retractable guardrail also includes an extension guard mechanism, which includes an extension column one and an extension column two, wherein the extension column one is fixedly arranged at the upper end of the fixed frame, and the outer end output of the extension column one is connected to the protection belt two, and the outer end of the protection belt two is fixedly provided with an end shaft; the extension column two is fixedly arranged at the upper end of the supporting column, and the interior of the extension column two is provided with an inner hole near the inner end, and the inner end of the inner hole is provided with a card slot; the extension guard mechanism further extends the protection upward to increase the protection height, which is suitable for the needs of higher building construction, the extension column one is used to extend the output of the protection belt two toward the outer end, and the protection belt two is used for further safety protection, the inner hole is used to insert the end shaft to position the protection belt two, and the card slot is used to slide and insert the protection belt two, which greatly improves the applicability of the guardrail and can meet the changes in different venues and protection needs.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) By adopting an N-shaped fixed frame and a U-shaped bottom bracket with an integrated fixed connection at the bottom, the stability of the overall structure is enhanced, so that the guardrail can better disperse the stress when subjected to external force, and is not prone to deformation or damage, providing a solid support foundation for the entire guardrail system. The mobile support structure and the lifting adjustment mechanism are linked to each other, so that the guardrail has the function of height adjustment, which is convenient for manual control of the up and down adjustment of the mobile support structure, so that it can be raised for storage and hiding or lowered for support and movement. It can be flexibly adjusted to adapt to different building environments and protection requirements according to different usage scenarios and needs. Operators can easily operate without bending over or exerting effort, which greatly improves the convenience of use; (2) The retractable protective fence is symmetrically and fixedly arranged on both sides of the fixing frame. Multiple groups of protective belt winding devices are connected to the first protective belt, making it more convenient to store and deploy the first protective belt. When not in use, the first protective belt can be automatically wound into the protective belt winding device, saving space. When in use, simply pull the first protective belt to deploy it, with simple and quick operation. At the same time, the structural design of the fixed frame also provides good protection for the first protective belt, preventing the protective belt from being damaged by the external environment. By connecting the connecting block and the limit backing plate between the first protective belt and the support column, the connection between the first protective belt and the support column is made more firm, capable of withstanding a large tensile force, ensuring that the protective fence will not break easily when subjected to external force impact. By connecting the bottom column and the support at the bottom of the support column, the contact area between the support column and the ground is increased, improving the stability of the protective fence, and used for positioning and supporting the outer end of the first protective belt to safely protect the construction site of the building. (3) The installation of the protective fence is more convenient and fast, which can greatly shorten the installation time, improve the construction efficiency, can adapt to a variety of different building scenarios, provide effective safety protection, play a certain warning role, remind construction workers to pay attention to safety, and can better meet the safety protection needs of the building construction site, with broad application prospects and market value. Brief Description of the Drawings

[0015] Figure 1 It is a schematic view of the overall upper perspective structure of the present invention; Figure 2 It is a schematic view of the overall lower perspective structure of the present invention; Figure 3 It is a schematic view of the overall upper perspective structure of the retractable protective fence of the present invention in the fully deployed state; Figure 4 It is a schematic view of the overall upper perspective structure of the retractable protective fence of the present invention in the fully retracted state; Figure 5 It is a schematic view of the internal protective belt winding device structure of the retractable protective fence of the present invention; Figure 6 It is a partial structural schematic view of the extended protection mechanism of the present invention; Figure 7 For the present invention Figure 4 The enlarged structural schematic view at B in; Figure 8 For the present invention Figure 7 The enlarged structural schematic view at C in; Figure 9 For the present invention Figure 3 The enlarged structural schematic view at A in; Figure 10 It is a schematic view of the mobile support structure of the present invention; Figure 11 It is a schematic view of the internal side structure of the mobile support structure of the present invention; Figure 12 Schematic diagram of the overall lower perspective of the lifting and adjusting mechanism of the present invention; Figure 13 of the present invention Figure 12 Schematic diagram of the enlarged structure at position D in Figure 14 Schematic diagram of the overall upper perspective structure of the lifting and adjusting mechanism of the present invention; Figure 15 of the present invention Figure 14 Schematic diagram of the enlarged structure at position E in

[0016] In the figure: 1. Fixed frame; 10. Limit groove; 11. Lifting device; 12. Mobile support structure; 121. End plate; 122. Universal wheel; 123. Limit shaft; 13. Lifting and adjusting mechanism; 131. Lead screw; 1311. Axle seat one; 1312. Fixed gear disk; 132. Slide cylinder; 1321. Moving ring; 1322. Convex plate; 133. Hand-held operation structure; 1330. Positioning hole; 1331. Rotating rod; 1332. Axle seat two; 1333. Support plate; 1334. Driving gear disk; 1335. Operating rod; 13351. Handle; 1336. Positioning block; 13361. Movable hole; 1337. Positioning rod; 13371. Support plate; 13372. Fixed ring; 1338. Spring; 14. Bottom bracket; 15. Auxiliary rod one; 151. Auxiliary rod two; 16. Auxiliary plate; 2. Retractable protective fence; 21. Fixed frame; 211. Through hole groove; 22. Support column; 221. Hand-held rod holder; 222. Positioning rod; 223. Bottom column; 224. Support; 225. Connecting block; 226. Limit backing plate; 23. Protective belt one; 231. Protective belt winding device; 24. Positioning seat; 241. Slide groove; 242. Insertion hole one; 243. Insertion hole two; 244. Extension groove; 25. Extension protection mechanism; 251. Extension column one; 252. Extension column two; 2521. Inner hole; 2522. Card slot; 253. Protective belt two; 2531. End shaft; 26. Plug pin; 261. Pull ring; 262. Convex shaft plate; 27. Adjusting bolt; 271. Adjusting nut; 272. Rotating plate. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1 - 15The embodiment of the present invention provides a technical solution: a guardrail for building construction, comprising a fixed frame 1 and a retractable guardrail 2, the fixed frame 1 is an N-shaped structure and is integrally fixedly connected to a bottom bracket 14 at the middle of the bottom, the bottom bracket 14 is a U-shaped structure and is internally connected to a lifting adjustment mechanism 13, and the two ends of the lifting adjustment mechanism 13 are extended and fixedly connected to a movable support structure 12, the movable support structure 12 is located below the bottom bracket 14 and is limitedly connected to the two ends of the fixed frame 1; The retractable guardrail 2 is a symmetrical structure fixed on both sides of the fixed frame 1. The retractable guardrail 2 includes a fixed frame 21, a support column 22, a guard belt 23 and a guard belt winding device 231. The fixed frame 21 is a hollow structure and the guard belt winding device 231 is installed and distributed inside the fixed frame 21. The guard belt 23 is connected to the output end of the guard belt winding device 231 and is connected to the outside of the fixed frame 21. The outer end of the guard belt 23 is fixedly provided with a limiting pad 226, and the outer end of the limiting pad 226 is fixedly provided with a connecting block 225. The support column 22 is a cylindrical structure fixedly provided at the outer end of the connecting block 225. The limiting pad 226 is used for limiting support to the outer end of the fixed frame 21, and the connecting block 225 is used to fix the support column 22 to the outer end of the limiting pad 226.

[0019] Further improvement, such as Figures 10 - 11 As shown, a lifting device 11 is welded to the upper end of the fixing frame 1; The fixed frame 1 has limit slots 10 on both sides. The mobile support structure 12 includes an end plate 121, a universal wheel 122 and a limit shaft 123. The universal wheel 122 is installed at the bottom corner of the end plate 121. The limit shaft 123 is fixedly distributed on both sides of the end plate 121, and the limit shaft 123 penetrates the limit slot 10 for limit sliding connection. The lifting device 11 is used to lift and carry the fixing frame 1 and the entire equipment by hand. The entire equipment is light and can be lifted by one hand. The end plate 121 is used to support multiple sets of universal wheels 122 downward. The universal wheels 122 are used to contact the ground and move stably. They are convenient for mobile use in building construction sites and have a wide range of adaptability. The limiting shaft 123 is used to assist the end plate 121 in limiting sliding in the limiting groove 10, so that the overall lifting and lowering adjustment of the mobile support structure 12 is more stable and the shaking coefficient is reduced.

[0020] Further improvement, such as Figures 11 - 12As shown, the lifting and adjusting mechanism 13 includes a lead screw 131, a fixed gear disk 1312, a sliding cylinder 132, a moving ring 1321, a convex plate 1322 and a hand-operated structure 133. The upper and lower ends of the lead screw 131 are rotatably connected to a first shaft seat 1311, and the first shaft seats 1311 are respectively fixed at the middle positions of the fixed frame 1 and the bottom bracket 14. The sliding cylinder 132 is threadedly connected to the outside of the lead screw 131. The moving ring 1321 is arranged outside the sliding cylinder 132. The convex plates 1322 are symmetrically fixed on the outer side wall of the moving ring 1321. The outer ends of the convex plates 1322 are fixedly distributed with first auxiliary rods 15 in an L-shaped structure. The outer ends of the first auxiliary rods 15 are fixedly connected downward to second auxiliary rods 151, and the lower ends of the second auxiliary rods 151 are fixedly arranged at both ends of the top of the end plate 121; Auxiliary plates 16 are fixedly distributed on both sides of the bottom bracket 14, and the second auxiliary rods 151 penetrate through and are connected in a limited sliding manner to the outer ends of the auxiliary plates 16; The first shaft seat 1311 is used to stably rotate and support the lead screw 131. The lead screw 131 is used to adjust the height of the sliding cylinder 132 and the moving ring 1321 up and down through the thread. The convex plate 1322 is used to extend and fix the first auxiliary rods 15 in an L-shaped structure on both sides of the moving ring 1321. The first auxiliary rods 15 in an L-shaped structure are used to fixedly connect the second auxiliary rods 151 downward. The second auxiliary rods 151 are used to fixedly support towards the end plate 121, so as to drive the overall lifting and adjustment of the moving support structure 12. Through holes are formed at the outer ends of the auxiliary plates 16, and the second auxiliary rods 151 are located at the through holes for limited sliding adjustment, providing additional limit and support for the lifting process, ensuring the stability of the lifting process, and avoiding shaking or tilting during the adjustment process.

[0021] Further improved, as Figures 12 - 13 shown, the fixed gear disk 1312 is fixedly arranged on the outside of the lead screw 131 near the upper end; The hand-operated structure 133 includes a rotating rod 1331, a second shaft seat 1332, a support plate 1333 and a driving gear disk 1334. The support plate 1333 is fixedly arranged at the bottom of the fixed frame 1 in an L-shaped plate structure. The second shaft seats 1332 respectively penetrate through and are connected to the inside of the fixed frame 1 and are fixed at the upper ends of the support plate 1333. The rotating rod 1331 is rotatably connected to the inside of the second shaft seat 1332. The driving gear disk 1334 is fixedly arranged on the outside of the rotating rod 1331 and is located between the second shaft seats 1332; The support plate 1333 in an L-shaped plate structure is used to fix the second shaft seat 1332 below the fixed frame 1. The second shaft seat 1332 is used to stably rotate and support the rotating rod 1331. The rotating rod 1331 is used to drive the driving gear disk 1334 to rotate. The driving gear disk 1334 is used to engage with the fixed gear disk 1312 to control the rotation of the lead screw 131.

[0022] Further improved, as Figures 14 - 15As shown, the rotating rod 1331 extends upward and is fixedly provided with an operating rod 1335 having a Z-shaped structure. The upper end of the operating rod 1335 is rotatably connected to a handle 13351; At the middle of the fixing frame 1, positioning holes 1330 are formed and distributed. The positioning holes 1330 are located around the upper shaft seat two 1332; An external fixing block 1336 is provided on the operating rod 1335. An activity hole 13361 is formed inside the fixing block 1336. A positioning rod 1337 is connected through the activity hole 13361. A support plate 13371 is fixedly provided at the upper end of the positioning rod 1337. A fixing ring 13372 is fixedly provided at the upper end of the support plate 13371. A spring 1338 is fixedly provided between the bottom of the support plate 13371 and the upper end of the fixing block 1336, and the spring 1338 is located outside the positioning rod 1337; The handle 13351 is used for holding and rotating to control the operating rod 1335. The operating rod 1335 having a Z-shaped structure is used for rotating and controlling the rotating rod 1331 in an annular track. The activity hole 13361 is used for telescopic activity to adjust the positioning rod 1337. The positioning rod 1337 is used for inserting downward into the positioning hole 1330 to lock the handheld operating structure 133 and avoid misoperation. The support plate 13371 and the fixing ring 13372 are used for holding and stretching to operate the positioning rod 1337. The spring 1338 is used for elastically supporting the support plate 13371 upward above the activity hole 13361.

[0023] Further improved, as Figure 3 、 Figure 4 、 Figure 9 As shown, through holes 211 are formed and distributed at the outer end of the fixing frame 21. The first protective belt 23 is connected through the inside of the through holes 211; The bottom of the support column 22 is connected to a bottom column 223. A support 224 is fixedly provided at the bottom of the bottom column 223. The lower end of the outer side of the support column 22 is connected through a thread with an adjusting bolt 27. An adjusting nut 271 is fixedly provided at the outer end of the adjusting bolt 27. An internal hexagonal empty groove is formed at the outer end of the adjusting nut 271. A rotating plate 272 is fixedly distributed on the outer side wall of the adjusting nut 271; The through holes 211 are used for limiting and adjusting the activity of the first protective belt 23, facilitating stretching operation. The hole groove has a small specification to prevent rainwater from entering. The bottom column 223 is used for extending downward from the support column 22 to adjust the height of the support 224. The support 224 is used for stably supporting the ground and fixedly supporting the support column 22 upward. The adjusting bolt 27 and the adjusting nut 271 are used for loosening and tightening adjustment so that the height of the support column 22 can be finely adjusted. The rotating plate 272 is used for holding and rotating operation. By rotating the adjusting nut 271, the adjusting bolt 27 is driven to move up and down, thereby adjusting the height of the support column 22 to ensure that the overall protective fence is in a horizontal state, improving the stability and protective effect of the protective fence.

[0024] Further improved, asFigure 3 As shown, a hand-held rod holder 221 is fixedly provided at the middle position on the outer side of the support column 22, and positioning rods 222 are fixedly distributed at the front and rear ends of the support column 22; The hand-held rod holder 221 is used for hand-held stretching and moving operations of the support column 22, and multiple groups of positioning rods 222 are used to stably support the support column 22 to the positioning seat 24.

[0025] Further improved, as Figures 3 - 8 shown, a positioning seat 24 is provided corresponding to the positioning rod 222. The positioning seat 24 is fixedly provided at the outer end of the fixed frame 21 and is located at the front and rear ends of the first protective belt 23. A chute 241 is opened near the outer end at the middle of the positioning seat 24; An insertion hole one 242 is penetrated and opened above the outer end of the upper positioning seat 24, and an insertion hole two 243 is opened below the outer end of the upper positioning seat 24. Extension grooves 244 are opened on the sides of both the insertion hole one 242 and the insertion hole two 243, and the upper and lower extension grooves 244 are in a cross-shaped structure; An insertion pin 26 is inserted into the insertion hole one 242 and the insertion hole two 243. A convex shaft plate 262 is fixedly provided at the bottom of the insertion pin 26, and a pull ring 261 is fixedly provided at the upper end of the insertion pin 26; The chute 241 is used for sliding and embedding the positioning rod 222, the insertion hole one 242 is used for penetrating the insertion pin 26, the insertion hole two 243 is used for inserting and positioning the insertion pin 26, and the extension groove 244 is used for sliding and inserting the convex shaft plate 262, so that the insertion pin 26 is more stable after insertion, enabling the guardrail to be stably positioned and fixed in the stored state, effectively improving the safety and reliability of the guardrail, and avoiding safety accidents caused by accidental loosening of the first protective belt 23.

[0026] Specifically improved, as Figures 3 - 6 shown, the retractable guardrail 2 further includes an extended protection mechanism 25. The extended protection mechanism 25 includes an extended column one 251 and an extended column two 252. The extended column one 251 is fixedly provided at the upper end of the fixed frame 21, and a second protective belt 253 is output-connected to the outer end of the extended column one 251. A end shaft 2531 is fixedly provided at the outer end of the second protective belt 253; The extended column two 252 is fixedly provided at the upper end of the support column 22. An inner hole 2521 is opened near the inner end inside the extended column two 252, and a card slot 2522 is penetrated and opened at the inner end of the inner hole 2521; The extended protection mechanism 25 further extends upward for protection, increasing the protection height, suitable for the needs of relatively high building structures. The extended column one 251 is used for extending and outputting the second protective belt 253 outward. The second protective belt 253 is used for further safety protection. The inner hole 2521 is used for inserting the end shaft 2531 to position the second protective belt 253, and the card slot 2522 is used for sliding and inserting the second protective belt 253, greatly improving the applicability of the guardrail and being able to meet the changes in different site and protection requirements.

[0027] Working principle: The handheld lifting device 11 carries the whole, or stably moves on the ground through the support of multiple sets of universal wheels 122. After reaching the construction site of the building; Insert a single finger into the fixed ring 13372 and lift the support plate 13371 and the positioning rod 1337 upward through the elastic action of the spring 1338. Then, hold the handle 13351 and rotate the control lever 1335 to drive the rotating lever 1331 and the driving gear 1334 to rotate. Engage with the fixed gear 1312 to drive the lead screw 131 to rotate, so that the sliding cylinder 132, the moving ring 1321 and the convex plate 1322 slide upward, driving the auxiliary rod one 15 and the auxiliary rod two 151 to adjust the mobile support structure 12 upward. Through the limiting shaft 123, the auxiliary end plate 121 is stably lifted upward, so that the universal wheel 122 rises, and thus the mobile support structure 12 is received into the fixed frame 1, so that the fixed frame 1 and the fixed frame 21 support on the ground. Loosen the fixed ring 13372 so that the positioning rod 1337 is inserted into the positioning hole 1330 for locking; Hold the pull ring 261 and pull out the bolt 26 upward from the jack two 243 and the extension groove 244. Then, rotate the bolt 26 so that the convex shaft plate 262 is removed from the jack one 242. Hold the handheld rod holder 221 and lift the support column 22, so that multiple sets of positioning rods 222 slide out of the chute 241 of the positioning seat 24. Multiple sets of the first protective belts 23 are pulled out from the protective belt winding device 231 for safety protection. Finally, hold the rotating plate 272 outside the adjusting nut 271 and rotate the adjusting bolt 27 so that the bottom column 223 and the support 224 adjust the height to stably support the ground; Hold the end shaft 2531 at the outer end of the extension column one 251 and pull out the second protective belt 253, and then insert it into the inner hole 2521 along the card slot 2522 of the extension column two 252 for further safety protection.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

[0029] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A protective railing for a house building, comprising a fixing frame (1) and a retractable protective railing (2), characterized in that: The fixing bracket (1) is of an N-shaped structure, and a bottom bracket (14) is integrally and fixedly connected to the middle of the bottom. The bottom bracket (14) is of a U-shaped structure, and a lifting and adjusting mechanism (13) is connected inside. The two ends of the lifting and adjusting mechanism (13) extend and are fixedly connected to a moving support structure (12). The moving support structure (12) is located below the bottom bracket (14) and is connected to the two ends of the fixing bracket (1) in a limited way; The retractable guardrail (2) is symmetrically fixed on both sides of the fixing bracket (1). The retractable guardrail (2) includes a fixing frame (21), a support column (22), a first guard belt (23) and a guard belt winding device (231). The fixing frame (21) is of a hollow structure, and the guard belt winding device (231) is installed and distributed inside the fixing frame (21). The first guard belt (23) is connected to the output end of the guard belt winding device (231) and penetrates and is connected to the outside of the fixing frame (21). A limit backing plate (226) is fixedly arranged at the outer end of the first guard belt (23). Connecting blocks (225) are fixedly distributed at the outer end of the limit backing plate (226). The support column (22) is fixedly arranged at the outer end of the connecting block (225) in a cylindrical structure; 2. The protective railing for a housing building according to claim 1, wherein: A lifting device (11) is welded to the upper end of the fixing bracket (1); Limit grooves (10) are distributed by opening on both sides of the fixing bracket (1). The moving support structure (12) includes an end plate (121), a universal wheel (122) and a limit shaft (123). The universal wheel (122) is installed at the bottom corners of the end plate (121). The limit shafts (123) are fixedly distributed on both sides of the end plate (121), and the limit shafts (123) penetrate and are connected to the limit grooves (10) in a limited sliding way; 3. The protective fence for a building according to claim 2, characterized in that: The lifting and adjusting mechanism (13) includes a lead screw (131), a fixed gear disk (1312), a sliding cylinder (132), a moving ring (1321), a convex plate (1322) and a hand-operated structure (133). The upper and lower ends of the lead screw (131) are rotationally connected to a first shaft seat (1311). The first shaft seats (1311) are respectively fixedly arranged at the middle parts of the fixing bracket (1) and the bottom bracket (14). The sliding cylinder (132) is threadedly connected to the outside of the lead screw (131). The moving ring (1321) is arranged outside the sliding cylinder (132). The convex plates (1322) are symmetrically and fixedly arranged on the outer side wall of the moving ring (1321). An auxiliary rod one (15) in an L-shaped structure is fixedly distributed at the outer end of the convex plate (1322). An auxiliary rod two (151) is fixedly connected downward at the outer end of the auxiliary rod one (15). The lower ends of the auxiliary rod two (151) are fixedly arranged at both ends of the top of the end plate (121); Auxiliary plates (16) are fixedly distributed on both sides of the bottom bracket (14). The auxiliary rod two (151) penetrates and is connected to the outer ends of the auxiliary plates (16) in a limited sliding way; 4. The protective fence for a housing construction according to claim 3, characterized in that: The fixed gear disk (1312) is fixedly arranged on the outside of the lead screw (131) near the upper end; The handheld operation structure (133) includes a rotating rod (1331), a second shaft seat (1332), a support plate (1333), and a driving gear disc (1334). The support plate (1333) is in an L-shaped plate structure and is fixedly arranged at the bottom of the fixed frame (1). The second shaft seat (1332) is respectively connected through the inside of the fixed frame (1) and is fixedly arranged at the upper end of the support plate (1333). The rotating rod (1331) is rotatably connected to the inside of the second shaft seat (1332). The driving gear disc (1334) is fixedly arranged outside the rotating rod (1331) and is located between the second shaft seats (1332).

5. The guardrail for a housing construction according to claim 4, characterized in that: The rotating rod (1331) extends upward and is fixedly provided with an operating rod (1335) in a Z-shaped structure. The upper end of the operating rod (1335) is rotatably connected with a handle (13351); Positioning holes (1330) are distributed and opened at the middle of the fixed frame (1). The positioning holes (1330) are located around the upper second shaft seat (1332); A positioning block (1336) is fixedly arranged outside the operating rod (1335). An activity hole (13361) is opened inside the positioning block (1336). A positioning rod (1337) is connected through the inside of the activity hole (13361). A support plate (13371) is fixedly arranged at the upper end of the positioning rod (1337). A fixing ring (13372) is fixedly arranged at the upper end of the support plate (13371). A spring (1338) is fixedly arranged between the bottom of the support plate (13371) and the upper end of the positioning block (1336), and the spring (1338) is located outside the positioning rod (1337).

6. The protective fence for a housing construction according to claim 1, characterized in that: Through holes (211) are distributed and opened at the outer end of the fixed frame (21). The first protective belt (23) is connected through the inside of the through holes (211); The bottom of the support column (22) is connected with a bottom column (223). A support (224) is fixedly arranged at the bottom of the bottom column (223). The lower end of the outer side of the support column (22) is connected through a thread with an adjusting bolt (27). An adjusting nut (271) is fixedly arranged at the outer end of the adjusting bolt (27). An internal hexagonal empty groove is opened at the outer end of the adjusting nut (271). A rotating plate (272) is fixedly distributed on the outer side wall of the adjusting nut (271).

7. A guardrail for a housing construction according to claim 6, characterized in that: A handheld rod holder (221) is fixedly arranged at the middle of the outer side of the support column (22). Positioning rods (222) are fixedly distributed at the front and rear ends of the support column (22).

8. The protective fence for a housing building according to claim 7, characterized in that: A positioning seat (24) is arranged corresponding to the positioning rod (222). The positioning seat (24) is fixedly arranged at the outer end of the fixed frame (21) and is located at the front and rear ends of the first protective belt (23). A chute (241) is opened at the middle of the outer end of the positioning seat (24) near the outer end; A first jack (242) is penetrated and opened above the outer end of the upper positioning seat (24). A second jack (243) is opened below the outer end of the upper positioning seat (24). Extension grooves (244) are opened at the side parts of the first jack (242) and the second jack (243). The upper and lower extension grooves (244) are in a cross-shaped structure; A plug pin (26) is inserted inside the first socket (242) and the second socket (243). A convex shaft plate (262) is fixedly provided at the bottom of the plug pin (26), and a pull ring (261) is fixedly provided at the upper end of the plug pin (26).

9. The protective railing for a housing building according to claim 1, wherein: The retractable guardrail (2) further includes an extended protection mechanism (25). The extended protection mechanism (25) includes a first extended column (251) and a second extended column (252). The first extended column (251) is fixedly provided at the upper end of the fixed frame (21). A second protection belt (253) is output and connected to the outer end of the first extended column (251), and an end shaft (2531) is fixedly provided at the outer end of the second protection belt (253); The second extended column (252) is fixedly provided at the upper end of the support column (22). An inner hole (2521) is opened near the inner end inside the second extended column (252), and a card slot (2522) is penetrated and opened at the inner end of the inner hole (2521).

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