Flexible protective net fast networking device with high lap joint node strength

Abstract

The application discloses a flexible protective net fast networking device with high lap joint node strength, which comprises arm one and arm two, the arm one and the arm two are cross arranged and are hinged at the cross; the top end of the arm one is provided with a polymer yarn hot melting arc groove and a heating resistance wire, the bottom end of the arm one is a handle, and the polymer yarn hot melting arc groove is a transversely arranged U-shaped groove structure; the top end of the arm two is provided with a polymer yarn pushing device, and the bottom end of the arm two is a handle; when the handles of the arm one and the arm two are pinched, the sliding groove plate can be in contact with the polymer yarn hot melting arc groove, the polymer yarn pushing plate can drive the polymer yarn in the polymer yarn pushing plate to slide to the polymer yarn hot melting arc groove, and the polymer yarn is in contact with the heating resistance wire to realize hot melting forming; the flexible protective net connection can be completed by only pushing the button, the knotting operation can be recycled, the strength at the node position can be ensured while the construction period is greatly shortened, and the total cost consumed in tunnel construction is saved.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, and in particular to a rapid networking device for flexible protective netting with high overlap strength. Background Technology

[0002] For deep hard rock tunnels, when traversing high-stress zones, the sudden release of accumulated elastic strain energy in the rock mass can cause highly destructive rockbursts, directly threatening the lives of construction workers and impacting construction progress. Traditional shotcrete and anchor mesh support systems, as a means of rockburst prevention, have poor impact resistance and are slow to be applied.

[0003] Flexible protective netting, as a new type of geosynthetic material, has high strength and terrain adaptability. Compared with the traditional metal mesh used in previous shotcrete and anchor netting support, it has a certain degree of flexibility and strong deformation capacity, which can better absorb the energy released during rockburst and improve the safety of tunnel construction. Therefore, it is considered to introduce flexible protective netting into the tunnel support system to improve the rockburst prevention effect.

[0004] Traditional metal mesh and the flexible protective mesh currently used for slope protection are almost all connected manually. The method involves using simple connecting tools such as iron wire to pass through the mesh at the joint where the two sides of the mesh overlap. The wire is then tied and twisted into a braid at the joint with pliers. All the joints are then connected in sequence to achieve the networking of the flexible protective mesh.

[0005] While the existing method of manually fastening knots can connect flexible protective nets, it is cumbersome and complex to operate, and the labor intensity of construction workers is high, resulting in low networking efficiency. This slow manual knotting will seriously affect the tunnel construction progress, increase the construction period, and cause more waste of manpower, material resources and financial resources. Moreover, the quality of the knots cannot be fully guaranteed by manually fastening knots at the connection points.

[0006] In summary, current flexible protective netting networks suffer from problems such as complex operation and low efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide a high-strength flexible protective netting rapid networking device to solve the problems existing in the prior art. The flexible protective netting can be connected simply by pushing a button, and the knotting operation can be repeated. This can significantly shorten the construction period while ensuring the strength at the node position, thus saving the total cost of tunnel construction.

[0008] To achieve the above objectives, the present invention provides the following solution:

[0009] This invention provides a flexible protective net rapid networking device with high overlap node strength, including arm one and arm two, wherein arm one and arm two are arranged crosswise and are hinged at the intersection;

[0010] The top end of the first arm is provided with a polymer yarn hot-melt arc groove and a heating resistance wire, and the bottom end of the first arm is a handle. The polymer yarn hot-melt arc groove is a transversely arranged U-shaped groove structure.

[0011] The top end of the second arm is equipped with a polymer yarn pushing device, and the bottom end of the second arm is a handle. The polymer yarn pushing device includes a polymer yarn support base, a polymer yarn protective shell, a push-pull spring, a slidable U-shaped belt, and a polymer yarn pushing plate. The polymer yarn is a U-shaped coil that cooperates with the polymer yarn support base. The polymer yarn support base is located at the top end of the second arm, and several polymer yarn covers are located outside the polymer yarn support base. The polymer yarn protective shell covers the polymer yarn support base containing the polymer yarn inside, and the polymer yarn at the bottom is... The slidable U-shaped belt connects to the push-pull spring. The polymer yarn located at the top is nested in the U-shaped fixing groove at the bottom of the polymer yarn push plate under the elastic force of the push-pull spring. Guide sliders are also provided on both sides of the bottom of the polymer yarn push plate. A sliding groove plate is provided on the top outer periphery of the polymer yarn support. A guide rail that cooperates with the guide slider is provided on the sliding groove plate. A spring spring that controls the rebound of the sliding groove plate is also provided in the guide rail. A gap is provided between the sliding groove plate and the polymer yarn support for the polymer yarn to pass through.

[0012] When the handles of Arm 1 and Arm 2 are squeezed together, the sliding groove plate can contact the polymer yarn hot-melt arc groove, and the polymer yarn push plate can drive the polymer yarn inside it to slide into the polymer yarn hot-melt arc groove, and make the polymer yarn contact the heating resistance wire to achieve hot melting.

[0013] Preferably, the first arm is in the shape of a broken line, and a rectangular through opening is left in the middle part of the first arm. The second arm is in the shape of a straight line, and the bottom arm of the second arm passes through the through opening on the first arm. The first arm and the second arm each have a hinge hole reserved at corresponding positions. The connecting bolt is inserted into the hinge holes of the first arm and the second arm to realize the hinge connection of the first arm and the second arm.

[0014] Preferably, the polymer yarn support at the top of the second arm is an integral structure with the second arm, and the thickness of the polymer yarn support is greater than the thickness of the arm body at its bottom.

[0015] Preferably, a plurality of the polymer yarns are joined in rows using a weak adhesive.

[0016] Preferably, the heating resistance wire is disposed between the polymer yarn hot-melting arc groove and the first arm. After being preheated by electricity, it can heat-melt and reshape the polymer yarn pushed into the polymer yarn hot-melting arc groove into a ring.

[0017] Preferably, the second arm is also provided with a push-pull button, which is connected to both sides of the polymer yarn push plate by two steel wires.

[0018] The present invention achieves the following beneficial technical effects compared to the prior art:

[0019] This invention provides a high-strength, flexible protective netting rapid networking device. The device has a simple structure, strong adaptability to working environments, and can be used normally even under complex and harsh conditions. Compared to manual fastening, this device is simple and convenient to operate. Construction workers only need to insert the upper part of the device into the crosshair position of the flexible protective netting overlap and press and pull the push-pull button to move it up and down to complete the fastening action. No additional training is required for construction workers, greatly reducing their labor intensity. This invention's device fastens the fastening speed, has high work efficiency, and the fastening action can be continuously repeated. The entire process is safe and reliable, significantly improving the networking speed of flexible protective netting. A heating resistance wire is installed on arm one to heat-melt and reshape the polymer yarn, improving the connection strength of the loops compared to manual fastening, ensuring the networking quality of the flexible protective netting. Using this device for networking can shorten the construction period to a certain extent and reduce the manpower, material resources, financial resources, and total construction cost of networking flexible protective netting. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0021] Figure 1 This is a schematic diagram of the structure of the flexible protective netting rapid networking device with high overlap node strength in this invention.

[0022] Figure 2 This is an exploded view of arm two in this invention;

[0023] Figure 3 This is a schematic diagram of the polymer yarn pushing device in this invention;

[0024] Figure 4 This is a schematic diagram of the polymer yarn hot-melt arc groove and heating resistance wire in this invention;

[0025] Figure 5 This is a schematic diagram of the initial state structure of the high-strength flexible protective netting rapid networking device during operation in this invention.

[0026] Figure 6 This is a schematic diagram of the structure of the high-overlap-node strength flexible protective net rapid networking device of the present invention, showing the contact between the sliding groove plate and the hot-melt arc groove of the polymer yarn during operation.

[0027] Figure 7 This is a schematic diagram of the structure of the high-overlap-node strength flexible protective net rapid networking device of the present invention, in which the polymer yarn contacts the heating resistance wire behind the hot-melt arc groove of the polymer yarn during operation.

[0028] Figure 8 This is a schematic diagram of the polymer yarn loops formed during the operation of the high-overlap-node strength flexible protective net rapid networking device of the present invention.

[0029] In the diagram: 1. Arm 1; 2. Arm 2; 2-1. Polymer yarn support base; 3. Connecting bolt; 4. Push-pull button; 5. Polymer yarn protective shell; 6. Polymer yarn push plate; 6-1. Guide slider; 6-2. U-shaped fixing groove; 6-3. Steel wire; 7. Sliding groove plate; 7-1. Rebound spring; 8. Polymer yarn; 8-1. Polymer yarn loop; 9. Polymer yarn hot-melt arc groove; 10. Heating resistance wire; 11. Push-pull spring; 12. Sliding U-shaped belt. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The purpose of this invention is to provide a rapid networking device for flexible protective nets with high overlap node strength, so as to solve the problems existing in the prior art.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The high-strength flexible protective netting rapid networking device in this embodiment, such as... Figures 1-4 As shown, it includes arm 1 and arm 2, which are arranged crosswise and hinged at the intersection;

[0034] The top end of arm 1 is provided with a polymer yarn hot melt arc groove 9 and a heating resistance wire 10, and the bottom end of arm 1 is a handle. The polymer yarn hot melt arc groove 9 is a transversely arranged U-shaped groove structure.

[0035] The top of arm 2 is equipped with a polymer yarn pushing device, and the bottom of arm 2 is a handle. The polymer yarn pushing device includes a polymer yarn support 2-1, a polymer yarn protective shell 5, a push-pull spring 11, a slidable U-shaped belt 12, and a polymer yarn pushing plate 6. The polymer yarn 8 is a U-shaped coil that cooperates with the polymer yarn support 2-1. The polymer yarn support 2-1 is located at the top of arm 2. Several polymer yarns 8 are covered on the outside of the polymer yarn support 2-1. The polymer yarn protective shell 5 covers the polymer yarn support 2-1 with polymer yarns 8 inside. The polymer yarns 8 at the bottom are connected to the push-pull spring 6 via the slidable U-shaped belt 12. Spring 11, which is a push-pull spring, is initially compressed and can control the output of polymer yarn 8. The polymer yarn 8 located at the top is nested in the U-shaped fixing groove 6-2 at the bottom of the polymer yarn push plate 6 under the elastic force of the push-pull spring 11. Guide sliders 6-1 are also provided on both sides of the bottom of the polymer yarn push plate 6. A sliding groove plate 7 is provided on the outer periphery of the top of the polymer yarn support 2-1. A guide rail that cooperates with the guide slider 6-1 is provided on the sliding groove plate 7. A spring spring 7-1 that controls the rebound of the sliding groove plate 7 is also provided in the guide rail. A gap is provided between the sliding groove plate 7 and the polymer yarn support 2-1 for the polymer yarn to pass through.

[0036] When the handles of arm 1 and arm 2 are squeezed together, the sliding groove plate 7 can contact the polymer yarn hot-melting arc groove 9, and the polymer yarn push plate 6 can drive the polymer yarn 8 inside it to slide into the polymer yarn hot-melting arc groove 9, and make the polymer yarn contact the heating resistance wire 10 to achieve hot melting.

[0037] In this specific embodiment, arm 1 is zigzag-shaped with a rectangular through-hole in the middle. Arm 2 is straight with the bottom of arm 2 passing through the through-hole on arm 1. Arm 1 and arm 2 each have a hinge hole at the corresponding position. The connecting bolt 3 is inserted into the hinge holes of arm 1 and arm 2 to achieve the hinge connection between arm 1 and arm 2. The polymer yarn support at the top of arm 2 is an integral structure with arm 2, and the thickness of the polymer yarn support 2-1 is greater than the thickness of the bottom arm body.

[0038] In this specific embodiment, several polymer yarns 8 are connected in rows with a weak adhesive, and each time a polymer yarn is nested into the U-shaped fixing groove 6-2 at the bottom of the polymer yarn push plate 6 under the pushing force of the push-pull spring 11.

[0039] In this specific embodiment, the heating resistance wire 10 is disposed between the polymer yarn hot-melting arc groove 9 and the arm 1. After being preheated by electricity, it can heat-melt and reshape the polymer yarn pushed into the polymer yarn hot-melting arc groove 9 into a ring.

[0040] The second arm 2 is also equipped with a push-pull button 4. The push-pull button 4 is connected to both sides of the polymer yarn push plate 6 by two steel wires 6-3. The push-pull button 4 is located in the center of the left side of the second arm 2 and can move up and down on the surface of the second arm 2. When the push-pull button 4 is pressed and moved down, the return spring 7-1 is compressed, and the steel wire 6-3 drives the guide slider 6-1 to slide in the guide rail of the sliding groove plate 7. At this time, the polymer yarn in the U-shaped fixed groove 6-2 can move into the polymer yarn hot melt arc groove 9.

[0041] The high-strength flexible protective netting rapid networking device with high overlap node strength of the present invention is operated as follows:

[0042] 1) Power on the device to preheat the heating resistance wire 10. Locate the connection point where the two sides of the flexible protective net overlap. Manually hold the lower handle of the device and use your little finger to open the upper part of the device, passing it through the crosshairs at the overlap point (e.g., Figure 5 (As shown).

[0043] 2) Press the lower handle of the device inward with your palm to make the sliding groove plate 7 contact the polymer yarn heat-melting arc groove 9 (e.g., Figure 6 As shown), press and hold the push-pull button 4 with your finger to move it downwards. The stretchable steel wire 6-3 connected to it drives the polymer yarn nested in the U-shaped fixed groove 6-2 to move in the sliding groove into the polymer yarn heat-melting arc groove 9 until the polymer yarn contacts the heating resistance wire 10 behind the polymer yarn heat-melting arc groove 9 (as shown). Figure 7 (As shown).

[0044] 3) Keeping the push-pull button 4 in place, the return spring 7-1 is compressed, allowing the heating resistance wire 10 to fully heat the polymer yarn in the polymer yarn heat-melting arc groove 9, causing it to melt and reshape. The two ends are then connected, thus forming a closed polymer yarn loop 8-1 at the cross-shaped intersection of the flexible protective net (as shown in the image). Figure 8 (As shown).

[0045] 4) Release the push-pull button 4 to move it upward. The return spring 7-1 pushes the polymer yarn push plate 6 back to its original position. At the same time, the push-pull spring 11 will push the polymer yarn 8 upward, so that it can be nested with the U-shaped fixing groove 6-2 again.

[0046] Repeating the above steps allows you to fasten the same crosshair position multiple times, ensuring the strength of the joint at each connection point.

[0047] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A rapid networking device for flexible protective netting with high overlap node strength, characterized in that: It includes arm one and arm two, which are arranged crosswise and hinged at the intersection; The top end of the first arm is provided with a polymer yarn hot-melt arc groove and a heating resistance wire, and the bottom end of the first arm is a handle. The polymer yarn hot-melt arc groove is a transversely arranged U-shaped groove structure. The top end of the second arm is equipped with a polymer yarn pushing device, and the bottom end of the second arm is a handle. The polymer yarn pushing device includes a polymer yarn support base, a polymer yarn protective shell, a push-pull spring, a slidable U-shaped belt, and a polymer yarn pushing plate. The polymer yarn is a U-shaped coil that cooperates with the polymer yarn support base. The polymer yarn support base is located at the top end of the second arm, and several polymer yarn covers are located outside the polymer yarn support base. The polymer yarn protective shell covers the polymer yarn support base containing the polymer yarn inside, and the polymer yarn at the bottom is... The slidable U-shaped belt connects to the push-pull spring. The polymer yarn located at the top is nested in the U-shaped fixing groove at the bottom of the polymer yarn push plate under the elastic force of the push-pull spring. Guide sliders are also provided on both sides of the bottom of the polymer yarn push plate. A sliding groove plate is provided on the top outer periphery of the polymer yarn support. A guide rail that cooperates with the guide slider is provided on the sliding groove plate. A spring spring that controls the rebound of the sliding groove plate is also provided in the guide rail. A gap is provided between the sliding groove plate and the polymer yarn support for the polymer yarn to pass through. When the handles of Arm 1 and Arm 2 are squeezed together, the sliding groove plate can contact the polymer yarn heat-melting arc groove, and the polymer yarn pushing plate can drive the polymer yarn inside it to slide into the polymer yarn heat-melting arc groove, and make the polymer yarn contact the heating resistance wire to achieve heat melting; the heating resistance wire is disposed between the polymer yarn heat-melting arc groove and Arm 1, and after being preheated by electricity, it can heat melt and reshape the polymer yarn pushed into the polymer yarn heat-melting arc groove into a ring.

2. The high-strength flexible protective netting rapid networking device according to claim 1, characterized in that: The first arm is zigzag-shaped with a rectangular through-hole in the middle. The second arm is straight with its bottom body passing through the through-hole on the first arm. Each of the first and second arms has a hinge hole at a corresponding position. Connecting bolts are inserted into the hinge holes of the first and second arms to achieve the hinge connection between the first and the second arms.

3. The high-strength flexible protective netting rapid networking device according to claim 1, characterized in that: The polymer yarn support at the top of the second arm is an integral structure with the second arm, and the thickness of the polymer yarn support is greater than the thickness of the arm body at its bottom.

4. The high-strength flexible protective netting rapid networking device according to claim 1, characterized in that: Several of the polymer yarns are joined together in rows using a weak adhesive.

5. The high-strength flexible protective netting rapid networking device according to claim 1, characterized in that: The second arm is also equipped with a push-pull button, which is connected to both sides of the polymer yarn push plate by two steel wires.

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