Crossing frame pre-blocking device and method

Abstract

The invention belongs to the technical field of crossing frame net pre-blocking devices, particularly relates to a crossing frame net pre-blocking device and a crossing frame net pre-blocking method, and aims to solve the problem that when a falling object falls onto a protective net, parts of the protective net and a crossing frame can instantly bear large tensile force to be damaged, the following scheme is provided: the crossing frame net pre-blocking device comprises a main body, and one side of the main body is fixedly connected with a mounting frame; a rope winding module is arranged on the mounting frame, a fixing frame is fixedly connected to the inner wall of the top of the mounting frame, and a buffer reaction module is arranged on the fixing frame; the buffer reaction module comprises two sliding frames, two square holes are formed in the fixed frame, the two sliding frames slide in the corresponding square holes, and first round holes are formed in the two sliding frames. According to the crossing frame pre-blocking net device and method disclosed by the invention, the acting force generated by falling can be buffered when a falling object falls onto a protective net, and the protective net and other parts of the device are prevented from being damaged due to excessive instant tension.

Description

Technical Field

[0001] The invention relates to the technical field of pre-sealing net devices for spanning racks, and in particular to a pre-sealing net device and method for spanning racks. Background Art

[0002] The pre-sealed net device of the crossing frame is mainly used to form a protective net in advance above the object to be crossed; in terms of structure, it usually includes supporting components and a net body; the supporting components are used to fix and expand the net body so that it can cover the area that needs to be crossed, such as above facilities such as railways, roads or other power lines; the net body is generally made of high-strength fiber material and has sufficient strength to receive objects such as construction materials that may fall, to prevent them from falling onto the object to be crossed and causing damage or safety accidents.

[0003] In the prior art, after the spanning frame and the protective net are built, when objects fall from above onto the protective net, the force generated by the fall is large, causing the components of the protective net and the spanning frame to be subjected to a large tensile force in an instant, thereby causing damage and reducing the service life and safety of the device. Summary of the invention

[0004] The invention discloses a pre-sealing net device and method for a spanning frame, aiming to solve the technical problem in the background technology that when a falling object falls onto the protective net, the components of the protective net and the spanning frame are subjected to a large pulling force in an instant, thereby causing damage.

[0005] A spanning frame pre-sealing net device proposed in the present invention comprises a main body, one side of the main body is fixedly connected to a mounting frame, a rope collecting module is arranged on the mounting frame, and a fixing frame is fixedly connected to the top inner wall of the mounting frame, a buffer reaction module is arranged on the fixing frame; the buffer reaction module comprises two sliding frames, and the fixing frame is provided with two square holes, the two sliding frames both slide in the corresponding square holes, the two sliding frames are provided with a circular hole one, and the same rotating rod is movably connected in the two circular holes one; the rope collecting module comprises a rope collecting drum, the rope collecting drum is provided with two mutually symmetrical threaded slots, and the outside of the rope collecting drum is surrounded by two traction ropes, and the traction ends of the two traction ropes are fixedly connected to the same protective net.

[0006] In a preferred solution, two mounting frames are fixedly connected to the top of the fixed frame, and a rotating frame 1 is fixedly connected to the opposite inner walls of the two mounting frames, multiple rotating frames 1 are each provided with a circular hole 2, multiple circular holes 2 are each fixedly connected to a thin rod 1, and the outer walls of the multiple thin rods 1 are movably connected to a movable cylinder.

[0007] In a preferred solution, the outer walls on opposite sides of the two sliding frames are fixedly connected to the rotating frame 2, and multiple rotating frames 2 are each provided with a circular hole 3, multiple circular holes 3 are each fixedly connected to a thin rod 2, multiple thin rods 2 are each movably connected to the outer walls of the multiple thin rods 2, multiple rotating parts are each fixedly connected to a movable plate on one side away from the rotating frame 2, and multiple movable cylinder parts are each fixedly connected to two mutually symmetrical limit rods on the inner walls of the multiple movable cylinder parts.

[0008] In a preferred solution, one end of each of the movable plates away from the rotating frame 2 is fixedly connected to a sliding plate, and each of the sliding plates slides on the outside of the corresponding two limit rods, each of the limit rods is surrounded by a spring 1, one end of each of the springs 1 is fixedly connected to the inner wall of the corresponding movable cylinder, and the other end of each of the springs 1 is fixedly connected to the corresponding sliding plate.

[0009] In a preferred solution, a circular hole four is opened on the two sliding frames, and the same rotating shaft is movably connected in the two circular holes four. A cleaning roller is fixedly connected to the outer wall of the rotating shaft, one end of the rotating shaft is fixedly connected to a gear one, and one end of the rotating rod is fixedly connected to a gear two, and the gear one and the gear two are meshed with each other, and the two traction ropes slide on the outside of the rotating rod.

[0010] By providing a buffer reaction module, when a falling object falls onto the protective net, the traction rope is pulled, forcing the rotating rod and the sliding frame to descend, pulling the movable plate to make the sliding plate compress spring 1 to slide, and the elastic action of spring 1 can buffer the force generated by the fall, preventing the instantaneous excessive pulling force from causing damage to the traction rope and other parts of the device, and during the rope collection process, the sliding of the traction rope drives the rotating rod to rotate, and the mutual engagement of gear 1 and gear 2 drives the cleaning roller to rotate, so that the surface of the traction rope can be cleaned, preventing the accumulated dust from causing the deviation of the traction rope when it is reeled in.

[0011] In a preferred solution, a fixed frame is fixedly connected to an inner wall of one side of the mounting frame, a circular hole five is opened on the fixed frame, a rope collecting drum is movably connected in the circular hole five, an outer wall of one end of the rope collecting drum is fixedly connected to a transmission wheel, and an inner wall of one side of the mounting frame is fixedly connected to a motor, an outer wall of the output end of the motor is fixedly connected to a pulley, and the outer walls of the pulley and the transmission wheel are slidably connected with the same transmission belt.

[0012] In a preferred solution, the mounting frame is provided with a mounting groove, and a fixed rod frame is fixedly connected in the mounting groove, the fixed rod frame is provided with a sliding groove, and two sliding platforms are slidably connected in the sliding groove, and six circular holes are provided on the two sliding platforms, and movable platforms are movably connected in the two circular holes six, and the two movable platforms slide in the corresponding threaded groove holes.

[0013] In a preferred embodiment, the tops of the two movable platforms are fixedly connected to two mounting kits 1, the inner walls of multiple mounting kits 1 are slidably connected to mounting kits 2, and the bottom inner walls of multiple mounting kits 1 are fixedly connected to springs 2, the tops of multiple springs 2 are fixedly connected to mounting kits 2, and the tops of two mounting kits 2 on the same side are fixedly connected to the same sliding plate frame.

[0014] In a preferred solution, the tops of the two movable platforms are fixedly connected to fixed frames, the two fixed frames are provided with sliding holes and circular holes seven, and the two sliding plate frames slide in the corresponding sliding holes, the tops of the two sliding plate frames are fixedly connected to mounting parts, the two mounting parts are provided with circular holes eight, the two circular holes eight are fixedly connected with thin rods three, the two circular holes seven are fixedly connected with thin rods four, the outer walls of the two thin rods three and the two thin rods four are movably connected with guide wheels, and the two traction ropes slide on the outside of the corresponding guide wheels.

[0015] By providing a rope collecting module, the rope collecting drum is rotated by an electric motor so that the traction rope is wound around the outside of the rope collecting drum. As the rope collecting drum rotates, the movable platform slides in the threaded slot hole. At the same time, the second spring pushes the sliding plate frame under the elastic action, and the traction rope is limited by the guide wheel and driven to be regularly wound around the outside of the rope collecting drum, so that the winding process is uniform and regular, and the traction rope is prevented from being wound disorderly, causing knots and other adverse situations.

[0016] A method for using a pre-sealing net device for a spanning frame, using the pre-sealing net device for a spanning frame as described above, comprises the following steps:

[0017] Step 1: After the installation of the spanning frame is completed, the traction rope is fixedly connected to the two ends of the protective net, and then the motor is started to rotate the rope drum, so that the traction rope is wound around the outside of the rope drum, and the protective net is raised. During the winding process, the traction rope is limited by the guide wheel and driven to be regularly wound around the outside of the rope drum;

[0018] Step 2: During the rope collection process, the traction rope slides outside the rotating rod, driving the rotating rod to rotate, and the cleaning roller is driven to rotate through the mutual engagement of gear 1 and gear 2 to clean the surface of the traction rope;

[0019] Step 3. When the falling object falls onto the protective net, the protective net pulls the traction rope, forcing the rotating rod to drive the sliding frame to descend. The sliding plate compresses spring 1 and slides in the movable cylinder, and the force generated by the fall is buffered by the elastic action of spring 1.

[0020] From the above, it can be seen that when a falling object falls onto the protective net from above, a pre-sealing net device for a crossing frame provided by the present invention can buffer the force generated by the fall through a buffer reaction module to avoid damage to the protective net and other components of the device caused by excessive instantaneous pulling force, and when the traction rope is reeled in to lift the protective net, the traction rope can be limited to make the winding process uniform and regular to prevent unfavorable situations such as knotting caused by disordered winding, and at the same time, the surface of the traction rope can be cleaned to prevent the accumulation of dust and the like from causing the traction rope to deviate when it is wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a pre-sealing net device for a spanning frame proposed by the present invention;

[0022] Figure 2 This is a schematic structural diagram of the installation frame of a spanning frame pre-sealing net device proposed by the present invention;

[0023] Figure 3 This is a structural schematic diagram of a fixed frame of a spanning frame pre-sealing net device proposed by the present invention;

[0024] Figure 4 This is a schematic structural diagram of a buffer reaction module of a spanning rack pre-sealing net device proposed by the present invention;

[0025] Figure 5 This is a structural schematic diagram of a rope collecting drum of a pre-sealing net device for a spanning frame proposed by the present invention;

[0026] Figure 6 A cross-sectional view of the internal structure of a rope collecting drum of a pre-sealing net device for a spanning frame proposed by the present invention;

[0027] Figure 7 This is a cross-sectional view of the internal structure of a rope collecting module fixing frame of a spanning frame pre-sealing net device proposed by the present invention.

[0028] In the figure: 1, main body; 2, mounting frame; 3, fixed frame; 4, traction rope; 5, buffer reaction module; 501, sliding frame; 502, rotating shaft; 503, cleaning roller; 504, rotating rod; 505, gear 1; 506, gear 2; 507, mounting frame; 508, rotating frame 1; 509, movable cylinder; 510, rotating frame 2; 511, rotating member; 512, movable plate; 513, limiting rod; 514, sliding plate; 515, spring 1; 6. Rope collecting module; 601. Rope collecting drum; 602. Threaded slot; 603. Motor; 604. Pulley; 605. Transmission wheel; 606. Transmission belt; 607. Fixed rod frame; 608. Sliding table; 609. Movable table; 610. Installation kit 1; 611. Spring 2; 612. Installation kit 2; 613. Sliding plate frame; 614. Mounting piece; 615. Guide wheel; 616. Fixed frame; 7. Fixed frame; 8. Protective net. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] The pre-sealing net device for a spanning frame disclosed in the present invention is mainly used in scenarios where, when falling objects fall onto a protective net, components of the protective net and the spanning frame are subjected to a large tensile force in an instant, thereby causing damage.

[0031] Reference Figure 1-7 A spanning frame pre-sealing net device comprises a main body 1, a mounting frame 2 is fixedly connected to one side of the main body 1, a rope collecting module 6 is arranged on the mounting frame 2, and a fixing frame 3 is fixedly connected to the top inner wall of the mounting frame 2, and a buffer reaction module 5 is arranged on the fixing frame 3; the buffer reaction module 5 comprises two sliding frames 501, and the fixing frame 3 is provided with two square holes, and the two sliding frames 501 both slide in the corresponding square holes, and the two sliding frames 501 are both provided with a round hole one, and the same rotating rod 504 is movably connected in the two round holes one; the rope collecting module 6 comprises a rope collecting drum 601, and the rope collecting drum 601 is provided with two mutually symmetrical threaded slots 602, and the outside of the rope collecting drum 601 is surrounded by two traction ropes 4, and the traction ends of the two traction ropes 4 are fixedly connected to the same protective net 8.

[0032] Reference Figure 1 , Figure 3 and Figure 4 Two mounting frames 507 are fixedly connected to the top of the fixed frame 3, and rotating frames 508 are fixedly connected to the opposite inner walls of the two mounting frames 507, multiple rotating frames 508 are each provided with a circular hole 2, multiple circular holes 2 are each fixedly connected to a thin rod 1, and the outer walls of the multiple thin rods 1 are movably connected to a movable cylinder 509.

[0033] Reference Figure 1 , Figure 3 and Figure 4 The outer walls on the opposite sides of the two sliding frames 501 are fixedly connected with rotating frames 2 510, and multiple rotating frames 2 510 are each provided with round holes 3, multiple round holes 3 are each fixedly connected with thin rods 2, the outer walls of multiple thin rods 2 are each movably connected with rotating parts 511, and the sides of multiple rotating parts 511 away from the rotating frame 2 510 are each fixedly connected with movable plates 512, and the inner walls of multiple movable cylinders 509 are each fixedly connected with two mutually symmetrical limiting rods 513.

[0034] Reference Figure 1 , Figure 3 and Figure 4 , one end of the multiple movable plates 512 away from the rotating frame 510 is fixedly connected to the sliding plate 514, and the multiple sliding plate members 514 slide on the outside of the corresponding two limit rods 513, the outside of the multiple limit rods 513 is surrounded by a spring 515, one end of the multiple springs 515 is fixedly connected to the inner wall of the corresponding movable cylinder 509, and the other end of the multiple springs 515 is fixedly connected to the corresponding sliding plate member 514.

[0035] Reference Figure 1 , Figure 3 and Figure 4 , two sliding frames 501 are each provided with a circular hole four, and the same rotating shaft 502 is movably connected in the two circular holes four, and a cleaning roller 503 is fixedly connected to the outer wall of the rotating shaft 502, one end of the rotating shaft 502 is fixedly connected to a gear one 505, and one end of the rotating rod 504 is fixedly connected to a gear two 506, the gear one 505 and the gear two 506 are meshed with each other, and the two traction ropes 4 both slide on the outside of the rotating rod 504.

[0036] In a specific application scenario, when a falling object falls onto the protective net 8, the traction rope 4 is pulled, forcing the rotating rod 504 and the sliding frame 501 to descend and pull the movable plate 512 to make the sliding plate 514 compress the spring 1 515 to slide. The elastic action of the spring 1 515 can buffer the force generated by the fall to prevent the instantaneous excessive pulling force from causing damage to the traction rope 4 and the rest of the device. In the process of rope retraction, the sliding of the traction rope 4 drives the rotating rod 504 to rotate, and the mutual engagement of the gear 1 505 and the gear 2 506 drives the cleaning roller 503 to rotate, so as to clean the surface of the traction rope 4 and prevent the accumulated dust from causing the deviation of the traction rope 4 when it is retracted.

[0037] Reference Figure 1 , Figure 2 and Figure 5A fixed frame 7 is fixedly connected to the inner wall of one side of the mounting frame 2, a circular hole five is opened on the fixed frame 7, a rope collecting drum 601 is movably connected in the circular hole five, a transmission wheel 605 is fixedly connected to the outer wall of one end of the rope collecting drum 601, and a motor 603 is fixedly connected to the inner wall of one side of the mounting frame 2, a pulley 604 is fixedly connected to the outer wall of the output end of the motor 603, and the outer walls of the pulley 604 and the transmission wheel 605 are slidably connected with the same transmission belt 606.

[0038] Reference Figure 1 , Figure 6 and Figure 7 A mounting groove is provided on the mounting frame 2, and a fixed rod frame 607 is fixedly connected in the mounting groove. A sliding groove is provided on the fixed rod frame 607, and two sliding platforms 608 are slidably connected in the sliding groove. A round hole six is ​​provided on the two sliding platforms 608, and movable platforms 609 are movably connected in the two round holes six. The two movable platforms 609 slide in the corresponding threaded groove holes 602.

[0039] Reference Figure 1 , Figure 6 and Figure 7 The tops of the two movable platforms 609 are fixedly connected with two installation kits 1 610, the inner walls of the multiple installation kits 1 610 are slidably connected with installation kits 2 612, and the bottom inner walls of the multiple installation kits 1 610 are fixedly connected with springs 2 611, the tops of the multiple springs 2 611 are fixedly connected to the installation kits 2 612, and the tops of the two installation kits 2 612 located on the same side are fixedly connected with the same sliding plate frame 613.

[0040] Reference Figure 1 , Figure 6 and Figure 7 The tops of the two movable platforms 609 are fixedly connected with fixed frames 616, and sliding holes and round holes seven are opened on the two fixed frames 616, and the two sliding plate frames 613 slide in the corresponding sliding holes, the tops of the two sliding plate frames 613 are fixedly connected with mounting parts 614, and round holes eight are opened on the two mounting parts 614, and thin rods three are fixedly connected in the two round holes eight, and thin rods four are fixedly connected in the two round holes seven, and the outer walls of the two thin rods three and the two thin rods four are movably connected with guide wheels 615, and the two traction ropes 4 slide on the outside of the corresponding guide wheels 615.

[0041] In a specific application scenario, the rope drum 601 is rotated by the motor 603, so that the traction rope 4 is wound around the outside of the rope drum 601. As the rope drum 601 rotates, the movable platform 609 slides in the threaded slot 602. At the same time, the spring 2 611 pushes the sliding plate frame 613 under the elastic action, and the traction rope 4 is limited by the guide wheel 615 and driven to be regularly wound around the outside of the rope drum 601, so that the winding process is uniform and regular, preventing the traction rope 4 from being wound disorderly, causing knots and other adverse situations.

[0042] A method for using a pre-sealing net device for a spanning frame, using the pre-sealing net device for a spanning frame as described above, comprises the following steps:

[0043] Step 1: After the installation of the spanning frame is completed, the traction rope 4 is fixedly connected to the two ends of the protective net 8, and then the motor 603 is started to rotate the rope drum 601, so that the traction rope 4 is wound around the outside of the rope drum 601, and the protective net 8 is raised. During the winding process, the traction rope 4 is limited by the guide wheel 615 and driven to be regularly wound around the outside of the rope drum 601;

[0044] Step 2: During the rope collection process, the traction rope 4 slides outside the rotating rod 504, driving the rotating rod 504 to rotate, and the cleaning roller 503 is driven to rotate through the mutual engagement of the gear 1 505 and the gear 2 506 to clean the surface of the traction rope 4;

[0045] Step 3: When the falling object falls on the protective net 8, the protective net 8 pulls the traction rope 4, forcing the rotating rod 504 to drive the sliding frame 501 to descend, and the sliding plate 514 compresses the spring 1 515 to slide in the movable cylinder 509, and the elastic action of the spring 1 515 is used to buffer the force generated by the fall.

[0046] Working principle: After the installation of the spanning frame is completed, the traction rope 4 is fixedly connected to the two ends of the protective net 8, and then the motor 603 is started to drive the rope drum 601 to rotate through the transmission belt 606, and the traction rope 4 is wound around the outside of the rope drum 601 to lift the protective net 8. During the winding process, as the rope drum 601 rotates, the movable platform 609 slides in the threaded slot 602, and at the same time, the elastic action of the spring 2 611 is used to push the sliding plate frame 613, and the traction rope 4 is limited by the guide wheel 615 and driven to be regularly wound around the outside of the rope drum 601 to prevent the traction rope 4 from deflecting; during the rope collection process, the traction rope 4 slides on the rotating rod 504 The outside of the protective net 8 drives the rotating rod 504 to rotate, and the cleaning roller 503 is driven to rotate through the mutual engagement of gear 1 505 and gear 2 506 to clean the surface of the traction rope 4 to prevent the accumulated dust from causing the deviation of the traction rope 4 when it is rolled up; when a falling object falls on the protective net 8, the protective net 8 pulls the traction rope 4, forcing the rotating rod 504 to drive the sliding frame 501 to descend, and the movable plate 512 is pulled by the rotating frame 2 510, driving the sliding plate 514 to compress the spring 1 515 to slide in the movable cylinder 509, and the elastic action of the spring 1 515 is used to buffer the force generated by the fall, preventing the traction rope 4 and other devices from being damaged by excessive tension.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pre-sealing net device for a spanning frame, comprising a main body (1), characterized in that: A mounting frame (2) is fixedly connected to one side of the main body (1), a rope collecting module (6) is arranged on the mounting frame (2), and a fixing frame (3) is connected to the top inner wall of the mounting frame (2) by bolts, and a buffer reaction module (5) is arranged on the fixing frame (3); The buffer reaction module (5) comprises two sliding frames (501), and the fixed frame (3) is provided with two square holes, the two sliding frames (501) are slidable in the corresponding square holes, the two sliding frames (501) are provided with a circular hole one, and the two circular holes one are rotatably connected with a same rotating rod (504) via a bearing; The rope collecting module (6) comprises a rope collecting drum (601), on which two mutually symmetrical threaded slots (602) are provided, and two traction ropes (4) are surrounded on the outside of the rope collecting drum (601), and the traction ends of the two traction ropes (4) are fixedly connected to the same protective net (8).

2. A pre-sealing net device for a spanning frame according to claim 1, characterized in that: The top of the fixed frame (3) is fixedly connected to two mounting frames (507), and the inner walls opposite to each other of the two mounting frames (507) are fixedly connected to a rotating frame (508), a plurality of rotating frames (508) are each provided with a circular hole (2), a thin rod (1) is fixedly connected to each of the circular holes (2), and a movable cylinder (509) is movably connected to the outer walls of the plurality of thin rods (1).

3. A pre-sealing net device for a spanning frame according to claim 2, characterized in that: The outer walls of the two opposite sides of the two sliding frames (501) are fixedly connected to the rotating frame 2 (510), and the multiple rotating frames 2 (510) are each provided with a circular hole 3, and the multiple circular holes 3 are each fixedly connected to the thin rod 2, and the outer walls of the multiple thin rod 2 are each movably connected to a rotating member (511), and the multiple rotating members (511) are each fixedly connected to a movable plate (512) on one side away from the rotating frame 2 (510), and the inner walls of the multiple movable cylinder members (509) are each fixedly connected to two mutually symmetrical limiting rods (513).

4. A pre-sealing net device for a spanning frame according to claim 3, characterized in that: One end of each of the movable plates (512) away from the rotating frame 2 (510) is fixedly connected to a sliding plate (514), and each of the sliding plate (514) slides on the outside of the corresponding two limiting rods (513), and each of the limiting rods (513) is surrounded by a spring 1 (515), one end of each of the spring 1 (515) is fixedly connected to the inner wall of the corresponding movable cylinder (509), and the other end of each of the spring 1 (515) is fixedly connected to the corresponding sliding plate (514).

5. A pre-sealing net device for a spanning frame according to claim 4, characterized in that: A circular hole four is provided on the two sliding frames (501), and a same rotating shaft (502) is rotatably connected in the two circular holes four through bearings, a cleaning roller (503) is fixedly connected to the outer wall of the rotating shaft (502), one end of the rotating shaft (502) is fixedly connected to a gear one (505), and one end of the rotating rod (504) is fixedly connected to a gear two (506), the gear one (505) and the gear two (506) are meshed with each other, and the two traction ropes (4) slide on the outside of the rotating rod (504).

6. A pre-sealing net device for a spanning frame according to claim 5, characterized in that: A fixed frame (7) is fixedly connected to an inner wall of one side of the installation frame (2), a circular hole five is opened on the fixed frame (7), a rope collecting drum (601) is movably connected in the circular hole five, an outer wall of one end of the rope collecting drum (601) is fixedly connected to a transmission wheel (605), and an inner wall of one side of the installation frame (2) is fixedly connected to an electric motor (603), an outer wall of the output end of the electric motor (603) is fixedly connected to a pulley (604), and the outer walls of the pulley (604) and the transmission wheel (605) are slidably connected to the same transmission belt (606).

7. A pre-sealing net device for a spanning frame according to claim 6, characterized in that: The mounting frame (2) is provided with a mounting groove, and a fixed rod frame (607) is fixedly connected in the mounting groove, and a sliding groove is provided on the fixed rod frame (607), and two sliding platforms (608) are slidably connected in the sliding groove, and the two sliding platforms (608) are both provided with a six-round hole, and the two six-round holes are both movably connected with a movable platform (609), and the two movable platforms (609) slide in the corresponding threaded groove holes (602).

8. A pre-sealing net device for a spanning frame according to claim 7, characterized in that: The tops of the two movable platforms (609) are fixedly connected to two installation kits (610), the inner walls of the multiple installation kits (610) are slidably connected to installation kits (612), and the bottom inner walls of the multiple installation kits (610) are fixedly connected to springs (611), the tops of the multiple springs (611) are fixedly connected to installation kits (612), and the tops of the two installation kits (612) on the same side are fixedly connected to the same sliding plate frame (613).

9. A pre-sealing net device for a spanning frame according to claim 8, characterized in that: The tops of the two movable platforms (609) are fixedly connected to fixed frames (616), the two fixed frames (616) are provided with sliding holes and round holes seven, and the two sliding plate frames (613) slide in the corresponding sliding holes, the tops of the two sliding plate frames (613) are fixedly connected to mounting members (614), the two mounting members (614) are provided with round holes eight, the two round holes eight are fixedly connected to thin rods three, the two round holes seven are fixedly connected to thin rods four, the outer walls of the two thin rods three and the two thin rods four are movably connected to guide wheels (615), and the two traction ropes (4) slide on the outside of the corresponding guide wheels (615).

10. A method for using a pre-sealing net device for a spanning frame, using the pre-sealing net device for a spanning frame according to claim 9, characterized in that: The steps include: Step 1: After the installation of the spanning frame is completed, the traction rope (4) is fixedly connected to the two ends of the protective net (8), and then the motor (603) is started to rotate the rope drum (601), so that the traction rope (4) is wound around the outside of the rope drum (601), so that the protective net (8) is raised. During the winding process, the traction rope (4) is limited by the guide wheel (615) and driven to be regularly wound around the outside of the rope drum (601); Step 2: During the rope collection process, the traction rope (4) slides outside the rotating rod (504), driving the rotating rod (504) to rotate, and the cleaning roller (503) is driven to rotate through the mutual engagement of the gear 1 (505) and the gear 2 (506), thereby cleaning the surface of the traction rope (4); Step 3: When the falling object falls onto the protective net (8), the protective net (8) pulls the traction rope (4), forcing the rotating rod (504) to drive the sliding frame (501) to descend, and the sliding plate (514) compresses the spring 1 (515) to slide in the movable cylinder (509), and the elastic action of the spring 1 (515) is used to buffer the force generated by the fall.

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