Construction operation protective fence closing device

Abstract

The invention relates to the field of construction protective fences, in particular to a construction operation protective fence closing device which comprises a fence frame, folding doors are symmetrically and movably mounted at the front end of the fence frame, a tractor is arranged above the fence frame, and the construction operation protective fence closing device further comprises a lifting locking mechanism movably mounted at the top of the fence frame. According to the construction operation protective fence closing device, through cooperative use of the fence frame, the lifting locking mechanism, the closing mechanism and other components, when the fence frame needs to be lifted for the first time, after two folding doors are completely closed, the lifting locking mechanism is driven to operate through the closing mechanism; and on the contrary, the folding door is not completely closed, the two limiting covers on the lifting locking mechanism lock the tractor, at the moment, the tractor can drive the fence frame to ascend, on the contrary, the folding door is not completely closed, the limiting covers cannot lock the tractor, at the moment, the tractor cannot drive the fence frame to ascend in the ascending process, and the use safety performance is improved.

Description

Technical Field

[0001] This invention relates to the field of construction safety fencing technology, specifically to a construction operation safety fencing closing device. Background Technology

[0002] With the emergence of numerous modern high-rise buildings, high-rise construction machinery has also been widely used, such as various tower cranes and hoists, and various passenger and freight elevators. These types of elevators require the use of protective barriers during operation.

[0003] The following problems exist in the existing technology that have not been well resolved: Since such elevators are usually used in construction operations, construction waste and other foreign objects may remain on the elevator platform. When the closing gate of the fence is not fully closed, there will be safety hazards in the elevator's lifting operation. In the process of using the protective fence closing device of some existing construction elevators, it is difficult to self-check the closing status of the fence gate, which affects the safety of use. Summary of the Invention

[0004] The purpose of this invention is to provide a construction operation protective fence closing device, which aims to solve the problem mentioned in the background art: the closing devices of some existing elevator fences are difficult to self-check the closing status of the fence during use, which affects the safety of use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a construction operation protective fence closing device, comprising: a fence frame, wherein folding doors are symmetrically and movably installed at the front end of the fence frame, and a traction device is provided above the fence frame; further comprising: a lifting and locking mechanism, wherein the lifting and locking mechanism is movably installed at the top of the fence frame and is used to connect the traction device; a closing mechanism cooperating with the lifting and locking mechanism is movably connected between the two folding doors, and the closing mechanism is used to drive the lifting and locking mechanism to connect with the traction device; and a limit mechanism is movably connected between the two sides of the lifting and locking mechanism and the two sides of the fence frame.

[0006] As a further embodiment of the present invention, the lifting and locking mechanism includes: an adjustment groove located at the middle of the upper part of the fence frame; two main waist-shaped grooves symmetrically formed at the top and bottom of the adjustment groove; a connecting rod slidably connected between the two main waist-shaped grooves, the top of the connecting rod being fixedly connected to a limit cover and the bottom being fixedly connected to a limit plate; a positioning cone sleeve fixedly connected to the top of the fence frame and located between the two limit covers, the positioning cone sleeve cooperating with the traction device; two waist-shaped plates symmetrically slidably disposed inside the adjustment groove, the middle part of the connecting rod slidingly penetrating through the corresponding waist-shaped plate; a Y-shaped push rod fixedly connected between the side walls of the two waist-shaped plates; an adjustment cylinder rotatably connected to the front end of the inner wall of the adjustment groove, the surface of the adjustment cylinder having a spiral groove, the end of the Y-shaped push rod slidably disposed inside the spiral groove; a circular gear slidably disposed at the front end of the adjustment cylinder and cooperating with the closing mechanism; and a locking rod rotatably connected to the top surface of the fence frame and cooperating with the circular gear.

[0007] As a further embodiment of the present invention, the lower part of the traction device is tapered, the top of the traction device is fixedly connected to a positioning ring, and the inner top surface of the limiting cover is fixedly connected to an arc-shaped positioning plate that cooperates with the positioning ring; both sides of the bottom of the limiting cover are fixedly connected to positioning rods, the top of the fence frame is provided with a waist-shaped groove that cooperates with the positioning rods, and the bottom of the positioning rod passes through the waist-shaped groove and is fixedly connected to the top of the limiting plate.

[0008] As a further embodiment of the present invention, two spiral grooves are provided, symmetrically formed on the surface of the adjusting cylinder. Adjusting pins are symmetrically fixedly connected to the front ends of the Y-shaped push rods, and the front ends of the Y-shaped push rods are slidably disposed within the corresponding spiral grooves via the adjusting pins. A connecting bearing is fixedly connected between the surface of the adjusting cylinder and the inner wall of the adjusting groove. A sliding rod is fixedly connected to the front end of the adjusting cylinder, and sliding grooves are symmetrically formed on the surface of the sliding rod. A slider is symmetrically fixedly connected to the inner ring of the spherical gear, and the spherical gear is slidably disposed between the two sliding grooves via the slider. A compression spring is fixedly connected between the front end of the adjusting cylinder and the surface of the spherical gear. The front end of the spherical gear is tapered. A threaded hole that mates with the adjusting groove is formed on the inner top surface of the fence frame. The middle part of the locking rod is threadedly connected to the inside of the threaded hole. An arc-shaped pressure block is rotatably connected to the top of the locking rod, and the top of the arc-shaped pressure block overlaps the bottom of the front end of the spherical gear. An arc-shaped locking tooth that mates with the spherical gear is fixedly connected to the right side of the inner wall of the adjusting groove.

[0009] As a further embodiment of the present invention, the closing mechanism includes: a T-shaped closing rod rotatably connected to the back of the right-side folding door; a closing sleeve fixedly connected to the back of the left-side folding door and cooperating with the T-shaped closing rod, the bottom of the closing sleeve having a groove that cooperates with the T-shaped closing rod; two horizontal bars symmetrically slidably disposed on the inner wall of the groove, a wedge-shaped block cooperating with the groove being fixedly connected between one end of the two horizontal bars; a pressure rod vertically slidably disposed inside the closing sleeve, the top of the pressure rod being fixedly connected to a rack that cooperates with the spur gear; and a slot formed on the bottom surface of the adjusting groove and cooperating with the rack.

[0010] As a further embodiment of the present invention, a through groove is provided in the middle of the wedge block to cooperate with the pressure rod, and an arc-shaped pull block is fixedly connected between the ends of the two crossbars away from the wedge block; a movable groove is provided inside the closed sleeve, a retaining ring is fixedly connected to the surface of the pressure rod, and a compression spring is fixedly connected between the inner top surface of the movable groove and the top of the retaining ring.

[0011] As a further embodiment of the present invention, the limiting mechanism includes two U-shaped guide blocks, which are symmetrically and fixedly connected to both sides of the fence frame. Limiting blocks are slidably arranged on both sides of each U-shaped guide block. An L-shaped hinge plate is hinged to the top of each limiting block. A shaft is rotatably connected between the middle of the two L-shaped hinge plates. The bottom of the shaft is rotatably connected to the top of the U-shaped guide block. A vertical hole is formed at the top of the U-shaped guide block. A cone block is slidably arranged inside the vertical hole. A tension spring is fixedly connected between the bottom of the cone block and the inner bottom surface of the vertical hole. A telescopic rod is fixedly connected to the top of the cone block. A pull rope is fixedly connected to the top of the telescopic rod. One end of the pull rope is fixedly connected to the side wall of the adjacent limiting cover.

[0012] As a further embodiment of the present invention, a transverse groove is provided in the middle of the L-shaped hinge plate, a hinge pin is fixedly connected to the top of the limiting block, the limiting block is slidably disposed inside the transverse groove through the hinge pin, and the cone block is disposed between the two L-shaped hinge plates; a moving shaft is fixedly connected to the side wall of the limiting block, a moving hole that cooperates with the moving shaft is provided in the inner wall of the U-shaped guide block, and a push spring is fixedly connected between the inner wall of the moving hole and the end of the moving shaft.

[0013] In summary, the beneficial effects of this invention are:

[0014] By using components such as the fence frame, lifting and locking mechanism, and closing mechanism in conjunction, when the fence frame needs to be raised for the first time, after the two folding doors are fully closed, the closing mechanism will drive the lifting and locking mechanism to operate. The two limit covers on the lifting and locking mechanism will lock the traction device. Only then can the traction device raise the fence frame. Conversely, if the folding doors are not fully closed, the limit covers cannot lock the traction device. In this case, the traction device will not raise the fence frame during the raising process, thus improving the safety performance.

[0015] By using components such as the fence frame, folding gates, and closing mechanism in conjunction, after the traction device lifts the fence frame to the designated position and performs the unloading operation, when the two folding gates are closed again, if the two folding gates are not fully closed, the rack at the top of the closing sleeve cannot enter the slot position on the top surface of the fence frame. Under the restriction of the pressure bar, the T-shaped closing rod cannot be locked between the groove and the wedge block at the bottom of the closing sleeve. Thus, during the use of the folding gates after the fence frame is raised, the closing status of the folding gates is also checked to avoid potential safety hazards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of a construction operation protective fence closing device according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram showing the position of the limiting cover in a construction operation protective fence closing device according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal adjustment groove in a construction operation protective fence closing device according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram showing the position of the Y-shaped push rod in a construction operation protective fence closing device according to an embodiment of the present invention.

[0021] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0022] Figure 6 This is a schematic diagram of the connection of the adjusting cylinder in a construction operation protective fence closing device according to an embodiment of the present invention.

[0023] Figure 7This is a schematic diagram of the adjusting cylinder in a construction operation protective fence closing device according to an embodiment of the present invention.

[0024] Figure 8 This is a rear view of a folding door in a construction operation protective fence closing device according to an embodiment of the present invention.

[0025] Figure 9 for Figure 8 A magnified view of a portion of point B in the middle.

[0026] Figure 10 This is a schematic diagram showing the position of the closing sleeve in a construction operation protective fence closing device according to an embodiment of the present invention.

[0027] Figure 11 for Figure 10 A magnified view of a portion of point C.

[0028] Figure 12 This is a schematic diagram of the U-shaped guide block and telescopic rod in a construction operation protective fence closing device according to an embodiment of the present invention.

[0029] Figure 13 This is a schematic diagram of the connection of the L-shaped hinge plate in a construction operation protective fence closing device according to an embodiment of the present invention.

[0030] Figure 14 This is a schematic diagram of the connection of the limiting plate in a construction operation protective fence closing device according to an embodiment of the present invention.

[0031] Reference numerals: 1. Fence frame; 2. Folding gate; 3. Traction device; 4. Lifting and locking mechanism; 401. Adjustment groove; 402. Main waist-shaped groove; 403. Connecting rod; 404. Limit cover; 405. Limit plate; 406. Positioning cone sleeve; 407. Waist-shaped plate; 408. Y-shaped push rod; 409. Adjustment cylinder; 410. Spiral groove; 411. Circular gear; 412. Locking rod; 5. Closing mechanism; 501. T-shaped closing rod; 502. Closing sleeve; 503. Groove; 504. Crossbar; 505. Wedge block; 506. Pressure rod; 507. Rack; 508. Slot; 6. Limiting mechanism; 601. U-shaped guide block; 602. Limiting block; 603. L-shaped hinge plate; 604. Shaft; 605. Vertical hole; 606. Conical block; 607. Tension spring; 608. Telescopic rod; 609. Pull rope. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] Please see Figure 1 This invention provides a construction operation protective fence closing device, comprising: a fence frame 1, with folding doors 2 symmetrically and movably installed at the front end of the fence frame 1, and a traction device 3 disposed above the fence frame 1. It should be noted that the top of the traction device 3 is connected to a traction cable, and the traction cable carries the traction device 3 and the fence frame 1 for lifting and lowering operations. The cooperation between the traction device 3 and the traction cable is prior art and will not be described in detail. It also includes: a lifting and locking mechanism 4, which is movably installed on the top of the fence frame 1 and is used to connect the traction device 3.

[0035] Please see Figure 1 and Figure 8 A closing mechanism 5, which cooperates with the lifting and locking mechanism 4, is movably connected between the two folding doors 2. The closing mechanism 5 is used to drive the lifting and locking mechanism 4 to connect with the traction device 3. Limiting mechanisms 6 are movably connected between the two sides of the lifting and locking mechanism 4 and the two sides of the fence frame 1.

[0036] like Figures 1 to 14 As shown in the embodiment of the present invention, the lifting and locking mechanism 4 includes an adjustment groove 401, which is located at the middle of the upper part of the fence frame 1. The top and bottom of the adjustment groove 401 are both provided with main waist-shaped grooves 402. A connecting rod 403 is slidably connected between the two main waist-shaped grooves 402. A limit cover 404 is fixedly connected to the top of the connecting rod 403, and a limit plate 405 is fixedly connected to the bottom of the connecting rod 403. It should be noted that the limit cover 404 is located at the top of the fence frame 1, and the limit plate 405 is located at the bottom of the fence frame 1. The limit plate 405 ensures the stability of the limit cover 404 when it is movably installed at the top of the fence frame 1.

[0037] The top of the fence frame 1 is fixedly connected to a positioning cone sleeve 406 that cooperates with the traction device 3. The positioning cone sleeve 406 is positioned between two limiting covers 404, and the side walls of the limiting covers 404 are fixedly connected to the limiting mechanism 6. It should be noted that: since the top of the traction device 3 is connected to the traction cable, under the action of gravity, during the vertical downward movement of the traction device 3, the positioning cone sleeve 406 guides the traction device 3 to stably enter the interior of the positioning cone sleeve 406.

[0038] The adjusting groove 401 is symmetrically and slidably provided with waist-shaped plates 407. The middle part of the connecting rod 403 is slidably positioned in the middle of the corresponding waist-shaped plate 407. A Y-shaped push rod 408 is fixedly connected between the side walls of the two waist-shaped plates 407. It should be noted that: a through groove is opened in the middle of the waist-shaped plate 407, and the connecting rod 403 is slidably positioned inside the through groove, and the waist-shaped plate 407 is inclined; when the Y-shaped push rod 408 moves inside the adjusting groove 401, the two waist-shaped plates 407 move with it. During the sliding cooperation between the connecting rod 403 and the waist-shaped plate 407, the two connecting rods 403 move relative to each other. During the movement of the limiting cover 404 by the connecting rod 403, the two limiting covers 404 are engaged with the outside of the puller 3, restricting the puller 3 to the top of the fence frame 1.

[0039] An adjusting cylinder 409 is rotatably connected to the front end of the inner wall of the adjusting groove 401. A spiral groove 410 is formed on the surface of the adjusting cylinder 409. The end of the Y-shaped push rod 408 is slidably disposed inside the spiral groove 410. A circular gear 411, which cooperates with the closing mechanism 5, is slidably disposed at the front end of the adjusting cylinder 409. A locking rod 412, which cooperates with the circular gear 411, is rotatably connected to the inner top surface of the fence frame 1. It should be noted that guide grooves are symmetrically formed on the rear side of the inner wall of the adjusting groove 401. Guide rods are slidably disposed inside the guide grooves. Two guide rods are fixedly connected to the side walls of two waist-shaped plates 407, respectively. A restoring spring, which cooperates with the guide rod, is movably connected inside the guide groove. The elastic force of the restoring spring can drive the guide rod to move the waist-shaped plate 407 back to its original position.

[0040] In this embodiment of the invention, the lower part of the traction device 3 is tapered, and a positioning ring is fixedly connected to the top of the traction device 3. An arc-shaped positioning plate that cooperates with the positioning ring is fixedly connected to the inner top surface of the limiting cover 404. It should be noted that when the two limiting covers 404 are engaged on the surface of the traction device 3, during the upward movement of the traction device 3, the arc-shaped positioning plate on the inner top surface of the limiting cover 404 is located in the inner ring position of the positioning ring, which restricts the movement of the limiting cover 404 and further improves the stability of the cooperation between the traction device 3 and the limiting cover 404.

[0041] Positioning rods are fixedly connected to both sides of the bottom of the limiting cover 404. The top of the fence frame 1 has a waist-shaped groove that mates with the positioning rods. The bottom of the positioning rods passes through the waist-shaped groove and is fixedly connected to the top of the limiting plate 405. It should be noted that the limiting plate 405 is designed as an arc-shaped plate to facilitate the fixing of the connecting rod 403 and the positioning rod to its surface. Furthermore, ball bearings are fixedly connected to the side of the limiting plate 405 and the limiting cover 404 near the fence frame 1 to reduce frictional resistance during movement. The positioning rods and the waist-shaped grooves ensure that the limiting cover 404 moves stably on the surface of the fence frame 1.

[0042] In this embodiment of the invention, two spiral grooves 410 are provided, symmetrically formed on the surface of the adjusting cylinder 409. Adjusting pins are symmetrically fixed to the front ends of the Y-shaped push rods 408, and the front ends of the Y-shaped push rods 408 are slidably disposed inside the corresponding spiral grooves 410 via the adjusting pins. It should be noted that during the rotation of the adjusting cylinder 409, the spiral grooves 410 and the adjusting pins cooperate to slide, causing the Y-shaped push rods 408 to move backward within the adjusting groove 401.

[0043] A connecting bearing is fixedly connected between the surface of the adjusting cylinder 409 and the inner wall of the adjusting groove 401. A sliding rod is fixedly connected to the front end of the adjusting cylinder 409. The surface of the sliding rod has symmetrically opened sliding grooves. A slider is symmetrically fixedly connected to the inner ring of the spherical gear 411. The spherical gear 411 is slidably positioned between the two sliding grooves via the slider. A compression spring is fixedly connected between the front end of the adjusting cylinder 409 and the surface of the spherical gear 411. It should be noted that the compression spring is provided to ensure stable meshing between the spherical gear 411 and the rack 507.

[0044] The front end of the spur gear 411 is tapered. The inner top surface of the fence frame 1 is provided with a threaded hole that matches the adjustment groove 401. The middle part of the locking rod 412 is threaded into the inside of the threaded hole. The top of the locking rod 412 is rotatably connected to an arc-shaped pressure block. The top of the arc-shaped pressure block overlaps the bottom of the front end of the spur gear 411. An arc-shaped locking tooth that matches the spur gear 411 is fixedly connected to the right side of the inner wall of the adjustment groove 401. It should be noted that: a guide rod is fixedly connected to the bottom of the arc-shaped pressure block, and the guide rod is movably inserted inside the adjusting groove 401. A mounting bearing is fixedly connected between the bottom of the arc-shaped pressure block and the top of the locking rod 412. When the locking rod 412 is rotated, the locking rod 412 will move the arc-shaped pressure block towards the axis of the spherical gear 411, so that the conical surface of the spherical gear 411 is pressed and slides on the surface of the slide rod. At this time, the side wall of the spherical gear 411 will engage and limit the arc-shaped locking teeth, and the movement of the spherical gear 411 will release the meshing state with the closing mechanism 5. The locking rod 412 can be extended for convenient use.

[0045] In this embodiment of the invention, the closing mechanism 5 includes a T-shaped closing rod 501, which is rotatably connected to the back of the right folding door 2. A closing sleeve 502 that cooperates with the T-shaped closing rod 501 is fixedly connected to the back of the left folding door 2. It should be noted that a rotating shaft is fixedly connected to the back of the right folding door 2, and the T-shaped closing rod 501 is rotatably connected to the middle of the rotating shaft.

[0046] The bottom of the closing sleeve 502 has a groove 503 that mates with the T-shaped closing rod 501. A crossbar 504 is symmetrically slidably arranged on the inner wall of the groove 503. A wedge-shaped block 505 that mates with the groove 503 is fixedly connected between one end of the two crossbars 504. A return spring is movably sleeved on the surface of the crossbar 504. It should be noted that when the T-shaped closing rod 501 flips and engages with the wedge-shaped block 505 at the upper position of the inner wall of the groove 503, the movement of the T-shaped closing rod 501 is restricted by the wedge-shaped block 505.

[0047] A pressure rod 506 is vertically slidably arranged inside the closing sleeve 502. A rack 507 that meshes with a spur gear 411 is fixedly connected to the top of the pressure rod 506. A slot 508 that meshes with the rack 507 is opened on the inner bottom surface of the adjusting groove 401. It should be noted that when the two folding doors 2 are fully closed, the rack 507 and the slot 508 are on the same straight line. During the process of the rack 507 moving upward to its limit position, the rack 507 meshes with the spur gear 411, causing the adjusting cylinder 409 to rotate 180 degrees. During the process of the T-shaped closing rod 501 flipping and engaging inside the groove 503, if the pressure rod 506 cannot move the rack 507 upward into the slot 508, the two folding doors 2 are not fully closed.

[0048] In this embodiment of the invention, a through groove is provided in the middle of the wedge block 505 to cooperate with the pressure rod 506, and an arc-shaped pull block is fixedly connected between the ends of the two crossbars 504 away from the wedge block 505. It should be noted that the pressure rod 506 can only slide inside the closed sleeve 502, and the pressure rod 506 cannot rotate with the rack 507 to avoid interference.

[0049] The closed sleeve 502 has an internal movable groove, and a retaining ring is fixedly connected to the surface of the pressure rod 506. A compression spring is fixedly connected between the inner top surface of the movable groove and the top of the retaining ring.

[0050] In this embodiment of the invention, the limiting mechanism 6 includes two U-shaped guide blocks 601, which are symmetrically fixedly connected to both sides of the fence frame 1. It should be noted that a fall arrestor is provided between the U-shaped guide block 601 and the guide rail. This fall arrestor is existing technology and will not be described in detail here. Limiting blocks 602 are slidably provided on both sides of the U-shaped guide block 601. An L-shaped hinge plate 603 is hinged to the top of the limiting block 602. A shaft 604 is rotatably connected between the middle of the two L-shaped hinge plates 603. The bottom of the shaft 604 is rotatably connected to the top of the U-shaped guide block 601. A vertical hole 605 is opened at the top of the U-shaped guide block 601. A cone block 606 is slidably provided inside the vertical hole 605. A tension spring 607 is fixedly connected between the bottom of the cone block 606 and the inner bottom surface of the vertical hole 605. A telescopic rod 608 is fixedly connected to the top of the cone block 606. A pull rope 609 is fixedly connected to the top of the telescopic rod 608. One end of the pull rope 609 is fixedly connected to the side wall of the adjacent limiting cover 404. It should be noted that: the inner wall of the U-shaped guide block 601 is rotatably connected to a guide wheel that cooperates with the guide rail, and the limiting block on the inner wall of the U-shaped guide block 601 is in contact with the surface of the guide rail to restrict the fence frame 1 in the initial state. The cooperation between the guide wheel and the guide rail is existing technology and will not be described in detail here; the middle of the telescopic rod 608 is fixedly connected to an installation block, which is fixedly connected to the side wall of the fence frame 1. The top of the fence frame 1 is fixedly connected to a guide wheel, and the pull rope 609 is slidably disposed on the surface of the guide wheel. When the limiting cover 404 moves to the fully locked traction device 3, the telescopic rod 608 just extends to its limit and pulls the cone block 606 to trigger the limiting mechanism 6 to unlock. The cone block 606 presses against the two L-shaped hinge plates 603, causing the ends of the two L-shaped hinge plates 603 away from the cone block 606 to move in opposite directions. The L-shaped hinge plates 603, along with the hinged limiting block 602, release the contact restriction with the guide rail.

[0051] In this embodiment of the invention, a horizontal groove is provided in the middle of the L-shaped hinge plate 603, and a hinge pin is fixedly connected to the top of the limiting block 602. The limiting block 602 is slidably disposed inside the horizontal groove through the hinge pin, and a cone block 606 is disposed between the two L-shaped hinge plates 603. A movable shaft is fixedly connected to the side wall of the limiting block 602, and a movable hole that cooperates with the movable shaft is provided in the inner wall of the U-shaped guide block 601. A push spring is fixedly connected between the inner wall of the movable hole and the end of the movable shaft.

[0052] The working process of this embodiment of the invention is as follows: First, the traction device 3 is lowered into the positioning cone sleeve 406 at the top of the fence frame 1 to initially position the traction device 3. Then, the two folding doors 2 are pulled to close. Then, the T-shaped closing rod 501 on the right folding door 2 is flipped and inserted into the bottom of the closing sleeve 502 on the left folding door 2, so that the T-shaped closing rod 501 moves against the wedge block 505. After the T-shaped closing rod 501 passes the wedge block 505, it moves back to the wedge block 505 under the action of the return spring to limit the T-shaped closing rod 501. During this process, since the T-shaped closing rod 501 can be flipped and inserted into the groove 503 at the bottom of the closing sleeve 502 and is in a horizontal state, the two folding doors 2 are in a fully closed state.

[0053] During the process of the T-shaped closing rod 501 entering the groove 503, the pressure rod 506 is pressed by the T-shaped closing rod 501, causing the pressure rod 506 to rise inside the closing sleeve 502 and carry the rack 507 from the slot 508 into the adjusting groove 401. Then, the rack 507 meshes with the spur gear 411, causing the adjusting cylinder 409 to rotate 180 degrees. During this process, the adjusting pin on the Y-shaped push rod 408 slides along the trajectory of the spiral groove 410 on the surface of the adjusting cylinder 409, causing the Y-shaped push rod 408 to carry the two waist-shaped plates 407 synchronously. When the adjustment groove 401 moves internally, the middle part of the waist plate 407 slides in conjunction with the corresponding connecting rod 403. The connecting rod 403 pulls the limiting cover 404 to move horizontally at the top of the fence frame 1, so that the two limiting covers 404 move relative to each other and are locked on the outside of the traction device 3. During the above operation, when the two folding doors 2 cannot be fully closed, the rack 507 inside the closing sleeve 502 cannot enter the adjustment groove 401 to drive the two limiting covers 404 to move relative to each other. At this time, the traction device 3 will not lift the fence frame 1 synchronously when it rises.

[0054] Furthermore, during the movement of the limiting cover 404, the pull rope 609 will pull the cone block 606 upward inside the vertical hole 605, causing the cone block 606 to press against the two adjacent L-shaped hinge plates 603. The two L-shaped hinge plates 603 will deflect and move the hinged limiting block 602 horizontally inside the U-shaped guide block 601, causing the limiting block 602 to release its contact restriction with the guide rail, and causing the two sides of the fence frame 1 to switch to a rolling friction state with the guide rail through the guide wheels.

[0055] Then, the traction device 3 is activated to lift the fence frame 1, which is then lifted synchronously with the two closed limit covers 404. When the fence frame 1 reaches the limit height and unloading is required, the operator first rotates the locking rod 412. The locking rod 412, along with the top arc-shaped pressure block, presses against the conical surface of the sprocket 411, causing the sprocket 411 to slide at the front end of the adjusting cylinder 409. At this time, the sprocket 411 is engaged with the arc-shaped locking teeth on the inner wall of the adjusting groove 401 for limiting. Simultaneously, the sprocket 411 disengages from the rack 507, locking the state of the sprocket 411 and the adjusting cylinder 409. Then, the arc-shaped pull block at the bottom of the closing sleeve 502 is pulled, causing the crossbar 504 to move the wedge block 505 and release the limiting effect on the T-shaped closing rod 501. After the T-shaped closing rod 501 flips and disengages from the bottom of the closing sleeve 502, the two folding doors 2 can be opened. When the two folding doors 2 need to be closed again, the T-shaped closing rod 501 needs to be engaged with the closing sleeve 502 again. At this time, the pressure rod 506 inside the closing sleeve 502 can carry the rack 507 from the slot 508 position into the adjustment groove 401. Otherwise, when the folding door 2 is not fully closed, the T-shaped closing rod 501 cannot push the pressure rod 506 upward during the flipping process, so that the folding door 2 can self-check whether it is closed in place during the closing process. The displacement of the sprocket 411 ensures that the rack 507 will not drive the sprocket 411 to rotate again during the re-closing process of the folding door 2, thus avoiding interference caused by the rack 507 meshing with the sprocket 411 again.

[0056] Finally, when the traction device 3 moves the fence frame 1 down to its limit position, after opening the two folding doors 2, the locking rod 412 is released. At this time, the compression spring moves the spur gear 411 back to its original position, while the return spring inside the adjustment groove 401 moves the waist plate 407 back to its original position, so that the waist plate 407 slides with the connecting rod 403, thereby driving the limit cover 404 to move back to its original position at the top of the fence frame 1, releasing the clamp on the traction device 3. At the same time, as the limit cover 404 returns to its original position, the tension spring 607 moves down and returns the cone block 606 back to its original position. At this time, the limit block 602 returns to its original position under the action of the pushing spring and fits against the guide rail surface, returning to its initial state.

[0057] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 construction operation protective fence closing device, comprising: The fence frame (1) has folding doors (2) symmetrically and movably installed at its front end, and a puller (3) is provided above the fence frame (1); characterized in that it further includes: a lifting and locking mechanism (4), which is movably installed on the top of the fence frame (1) and is used to connect the puller (3); a closing mechanism (5) that cooperates with the lifting and locking mechanism (4) is movably connected between the two folding doors (2), and the closing mechanism (5) is used to drive the lifting and locking mechanism (4) to connect with the puller (3); a limit mechanism (6) is movably connected between the two sides of the lifting and locking mechanism (4) and the two sides of the fence frame (1).

2. The construction operation protective fence closing device according to claim 1, characterized in that: The lifting and locking mechanism (4) includes: an adjustment groove (401) located at the middle of the upper part of the fence frame (1); two main waist-shaped grooves (402) symmetrically opened at the top and bottom of the adjustment groove (401); a connecting rod (403) slidably connected between the two main waist-shaped grooves (402), the top of the connecting rod (403) being fixedly connected to a limit cover (404), and the bottom being fixedly connected to a limit plate (405); a positioning cone sleeve (406) fixedly connected to the top of the fence frame (1) and located between the two limit covers (404), the positioning cone sleeve (406) cooperating with the traction device (3); and two waist-shaped grooves symmetrically slidably arranged inside the adjustment groove (401). The connecting rod (403) slides through the corresponding waist plate (407) in the middle; a Y-shaped push rod (408) is fixedly connected between the side walls of the two waist plates (407); an adjusting cylinder (409) is rotatably connected to the front end of the inner wall of the adjusting groove (401), the surface of the adjusting cylinder (409) is provided with a spiral groove (410), and the end of the Y-shaped push rod (408) is slidably disposed inside the spiral groove (410); a spherical gear (411) is slidably disposed at the front end of the adjusting cylinder (409) and cooperates with the closing mechanism (5); and a locking rod (412) is rotatably connected to the inner top surface of the fence frame (1) and cooperates with the spherical gear (411).

3. The construction operation protective fence closing device according to claim 2, characterized in that: The lower part of the traction device (3) is tapered, and a positioning ring is fixedly connected to the top of the traction device (3). An arc-shaped positioning plate that cooperates with the positioning ring is fixedly connected to the inner top surface of the limiting cover (404). Positioning rods are fixedly connected to both sides of the bottom of the limiting cover (404). A waist-shaped groove that cooperates with the positioning rod is opened on the top of the fence frame (1). The bottom of the positioning rod passes through the waist-shaped groove and is fixedly connected to the top of the limiting plate (405).

4. The construction operation protective fence closing device according to claim 3, characterized in that: Two spiral grooves (410) are provided, and the two spiral grooves (410) are symmetrically opened on the surface of the adjusting cylinder (409). The front end of the Y-shaped push rod (408) is symmetrically fixedly connected with adjusting pins. The front end of the Y-shaped push rod (408) is slidably set inside the corresponding spiral groove (410) through the adjusting pins. A connecting bearing is fixedly connected between the surface of the adjusting cylinder (409) and the inner wall of the adjusting groove (401). A sliding rod is fixedly connected to the front end of the adjusting cylinder (409). The surface of the sliding rod is symmetrically opened with sliding grooves. A slider is symmetrically fixedly connected to the inner ring of the spherical gear (411). The spherical gear (411) passes through... The slider is slidably positioned between the two grooves. A compression spring is fixedly connected between the front end of the adjusting cylinder (409) and the surface of the spur gear (411). The front end of the spur gear (411) is tapered. A threaded hole that mates with the adjusting groove (401) is opened on the inner top surface of the fence frame (1). The middle part of the locking rod (412) is threaded into the inside of the threaded hole. An arc-shaped pressure block is rotatably connected to the top of the locking rod (412). The top of the arc-shaped pressure block overlaps the bottom of the front end of the spur gear (411). An arc-shaped locking tooth that mates with the spur gear (411) is fixedly connected to the right side of the inner wall of the adjusting groove (401).

5. A construction operation protective fence closing device according to claim 4, characterized in that: The closing mechanism (5) includes: a T-shaped closing rod (501) rotatably connected to the back of the right folding door (2); a closing sleeve (502) fixedly connected to the back of the left folding door (2) and cooperating with the T-shaped closing rod (501), wherein the bottom of the closing sleeve (502) is provided with a groove (503) cooperating with the T-shaped closing rod (501); two horizontal bars (504) symmetrically slidably disposed on the inner wall of the groove (503), wherein a wedge block (505) cooperating with the groove (503) is fixedly connected between one end of the two horizontal bars (504); a pressure rod (506) vertically slidably disposed inside the closing sleeve (502), wherein a rack (507) cooperating with the spur gear (411) is fixedly connected to the top of the pressure rod (506); and a slot (508) opened on the bottom surface of the adjusting groove (401) and cooperating with the rack (507).

6. A construction operation protective fence closing device according to claim 5, characterized in that: The wedge block (505) has a through groove in the middle that matches the pressure rod (506), and an arc-shaped pull block is fixedly connected between the ends of the two crossbars (504) away from the wedge block (505); the closed sleeve (502) has a movable groove inside, a retaining ring is fixedly connected to the surface of the pressure rod (506), and a compression spring is fixedly connected between the inner top surface of the movable groove and the top of the retaining ring.

7. A construction operation protective fence closing device according to claim 6, characterized in that: The limiting mechanism (6) includes two U-shaped guide blocks (601), which are symmetrically fixedly connected to both sides of the fence frame (1). Limiting blocks (602) are slidably arranged on both sides of each U-shaped guide block (601). An L-shaped hinge plate (603) is hinged to the top of each limiting block (602). A shaft (604) is rotatably connected between the middle parts of the two L-shaped hinge plates (603). The bottom of the shaft (604) is rotatably connected to the U-shaped guide block. At the top of the U-shaped guide block (601), a vertical hole (605) is provided at the top. A cone block (606) is slidably arranged inside the vertical hole (605). A tension spring (607) is fixedly connected between the bottom of the cone block (606) and the inner bottom surface of the vertical hole (605). A telescopic rod (608) is fixedly connected to the top of the cone block (606). A pull rope (609) is fixedly connected to the top of the telescopic rod (608). One end of the pull rope (609) is fixedly connected to the side wall of the adjacent limiting cover (404).

8. A construction operation protective fence closing device according to claim 7, characterized in that: The L-shaped hinge plate (603) has a horizontal groove in the middle. The top of the limiting block (602) is fixedly connected with a hinge pin. The limiting block (602) is slidably disposed inside the horizontal groove through the hinge pin. The cone block (606) is disposed between the two L-shaped hinge plates (603). The side wall of the limiting block (602) is fixedly connected with a moving shaft. The inner wall of the U-shaped guide block (601) has a moving hole that cooperates with the moving shaft. A push spring is fixedly connected between the inner wall of the moving hole and the end of the moving shaft.

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