Roadway net hanging device and working face net hanging system

Abstract

This invention provides a roadway netting device and a working face netting system. The roadway netting device includes: a support frame mounted on a liftable top beam and / or anti-collision block; a through rope groove on the support frame; an opening above the rope groove for the passage of a hoisting rope; and a pressure plate assembly adjustablely mounted on the support frame and located above the rope groove. By pulling the hoisting rope along the rope groove, the flexible netting is raised to the support frame and the top plate. When the pressure plate assembly closes the opening, the hoisting rope cannot detach from the opening. After the netting is installed and the hoisting rope is tensioned, the support frame descends vertically, the hoisting rope abuts against the pressure plate assembly, pushing the pressure plate assembly to open the opening, allowing the hoisting rope to detach from the rope groove through the opening. This invention achieves reliable load-bearing for the hoisting rope connected to the flexible netting, effectively replacing the load-bearing function of anchor cables and anchor rods, thus avoiding the problems of poor process safety and low construction efficiency associated with hoisting flexible netting using anchor cables.

Description

Technical Field

[0001] This invention relates to the field of tunnel protection equipment technology, and more specifically, to a tunnel mesh hanging device and a working face mesh hanging system. Background Technology

[0002] Currently, when installing netting at the end of mining in a high-extraction working face, it is usually necessary to construct anchor cables on the roof for net lifting in advance, and install wire ropes for net lifting that are suspended from the roof anchor cables by horseshoe rings and locks. The edges of the flexible net are connected to the net lifting wire ropes by U-shaped rings. When lifting the flexible net, the winches installed in the two roadways are used to tighten the net lifting wire ropes to suspend the flexible net on the roof. At the same time, the net lifting wire ropes at both ends of the working face are locked to complete the netting at the end of mining. At this time, the flexible net effectively blocks falling rocks from the roof, effectively protecting the safety of workers and equipment.

[0003] However, due to the high pressure on the working face during the final mining phase, the frequent and prolonged installation of anchor cables on the coal face poses significant safety hazards. Furthermore, the installation of anchor cables is time-consuming and labor-intensive, which is not conducive to the efficient management of roof safety during the final mining phase and cannot effectively guarantee safe and high-quality tunneling at the working face.

[0004] In order to change the existing traditional process of lifting flexible netting with anchor cables and solve the problems of personnel safety and low construction efficiency during the anchor cable installation process, there is an urgent need for a roadway netting device that can replace traditional anchor cables to lift flexible netting. Summary of the Invention

[0005] This invention provides a roadway netting device and a working face netting system to solve the problems of poor process safety and low construction efficiency in the existing technology of anchoring flexible netting with anchor cables.

[0006] To address the aforementioned problems, according to one aspect of the present invention, a roadway netting device is provided. The device suspends a flexible net onto the roof of the roadway via a hoisting rope connected to the flexible net. The device includes: a support frame detachably mounted on a top beam and / or anti-collision block that can be raised and lowered to the roof; the support frame has a through rope groove, the inner wall of which slides against the outer periphery of the hoisting rope to limit its movement; the extension direction of the rope groove is parallel to the extension direction of the hoisting rope and the extension direction of the roadway; the rope groove's... The upper part has an opening for the hoisting rope to pass through; a pressure plate assembly is adjustablely mounted on the support frame and located above the rope groove; the pressure plate assembly is used to open and close the opening; wherein, by pulling the hoisting rope along the rope groove, the flexible net is driven to rise to the support frame and the top plate; when the pressure plate assembly closes the opening, the hoisting rope cannot disengage from the opening; after the net is hung and the hoisting rope is tensioned, the support frame descends vertically, the hoisting rope abuts against the pressure plate assembly, pushes the pressure plate assembly to open the opening, and the hoisting rope disengages from the rope groove through the opening.

[0007] Furthermore, the pressure plate assembly includes a pressure plate, which is rotatably mounted on the support frame; the projection of the pressure plate on the horizontal plane is a first projection, and the projection of the rope groove on the horizontal plane is a second projection, with the first projection covering at least a portion of the second projection.

[0008] Furthermore, the pressure plate assembly also includes a cylindrical member, which is fixedly disposed on the side of the pressure plate; when the lifting rope slides relative to the pressure plate, the outer periphery of the cylindrical member is used to abut against the outer periphery of the lifting rope, so that the outer periphery of the lifting rope is spaced apart from the right-angled side of the pressure plate.

[0009] Furthermore, the pressing plate is a rectangular plate with mutually perpendicular length, width, and thickness directions. The width direction of the pressing plate is parallel to the extension direction of the rope groove, and the dimension of the pressing plate in the width direction is not greater than the length of the rope groove in the extension direction. The dimension of the pressing plate in the length direction is not less than the width of the rope groove perpendicular to the extension direction. The pressing plate has correspondingly arranged upper and lower plate surfaces in the thickness direction. The upper plate surface is used to abut against the flexible net to press the flexible net onto the top plate. When the supporting frame is vertically lowered, the hoisting rope abuts against the lower plate surface to push the pressing plate to rotate upward. And / or, the right-angled edges of the pressing plate along the length direction are all rounded.

[0010] Furthermore, the roadway netting device also includes a netting structure, which is set on the support frame and used to cooperate with the mesh of the flexible netting to constrain the flexible netting.

[0011] Furthermore, the hanging net structure includes barbs, which are disposed on the support frame. The barbs have a back side and a one-way inclined surface that is inclined relative to the horizontal plane. When the flexible net is hung in a set direction, the flexible net abuts against the one-way inclined surface and slides along the one-way inclined surface. When the flexible net moves in a direction opposite to the set direction, the back side locks the mesh of the flexible net to prevent the flexible net from moving.

[0012] Furthermore, the roadway netting device also includes an arc-shaped component, which is fixedly installed at both ends of the rope groove. When the hoisting rope slides relative to the rope groove, the outer arc of the arc-shaped component is used to abut against the outer circumference of the hoisting rope, so that the outer circumference of the hoisting rope and the right-angled sides at both ends of the rope groove are spaced apart.

[0013] Furthermore, the interior of the load-bearing frame has a constraint cavity, the inner wall of which is matched with the top beam and / or the anti-collision block for limiting; the size of the constraint cavity is adapted to the size of the top beam and / or the anti-collision block.

[0014] According to another aspect of the present invention, a working face netting system is provided, including the aforementioned roadway netting device. The working face netting system further includes a hoisting rope and a liftable top beam. The supporting frame is detachably mounted on the top beam by bolts to follow the up and down movement of the top beam. The flexible netting has mutually perpendicular length and width directions. The extension direction of the top beam is parallel to the length direction of the flexible netting and the extension direction of the roadway, respectively. There are multiple roadway netting devices, which are spaced apart along the extension direction of the top beam and simultaneously cooperate with a hoisting rope.

[0015] Furthermore, the working face netting system also includes multiple pulley assemblies, multiple clips, and a cable car for pulling the hoisting rope; multiple pulley assemblies are spaced apart on the roof to support the hoisting rope; multiple clips are spaced apart along the length of the flexible net and simultaneously engage with one hoisting rope; the flexible net is rolled up to form a net roll structure, the axis of which is parallel to the length of the flexible net; the width of the flexible net is parallel to the width of the roadway; the roadway netting device also includes a netting structure, which includes barbs set on the support frame, the barbs having a back side and a one-way inclined surface inclined relative to the horizontal plane; the width of the flexible net includes two opposite first and second directions, and when the flexible net moves along the first direction, the flexible net moves along the one-way inclined surface. The flexible mesh is laid out along the width of the roadway by the barbs that slide along the unidirectional inclined plane. When the flexible mesh moves in the second direction, the back of the barb locks the mesh to prevent it from moving. When the flexible mesh moves along its length, the outer periphery of the barb locks the mesh to prevent it from moving. The pressure plate assembly has corresponding upper and lower plates in the vertical direction. When the top beam descends vertically for the first time, the hoisting rope abuts against the lower plate to push the pressure plate assembly to rotate upward, opening the opening. The hoisting rope then disengages from the rope groove through the opening, tensions the rope, and pulls the flexible mesh closer to the top plate. After the top beam descends vertically for the first time, the top beam is controlled to rise, and the upper plate abuts against the flexible mesh and the hoisting rope to press the flexible mesh onto the top plate.

[0016] Applying the technical solution of this invention, this invention provides a roadway netting device. The device suspends a flexible net onto the roof of the roadway using a hoisting rope connected to the flexible net. The device includes: a support frame detachably mounted on a top beam and / or anti-collision block that can be raised and lowered to the roof; a through rope groove on the support frame, the inner wall of which slides against the outer periphery of the hoisting rope to limit its movement; the extension direction of the rope groove is parallel to the extension direction of the hoisting rope and the extension direction of the roadway; an opening above the rope groove for the hoisting rope to pass through; and a pressure plate assembly adjustablely mounted on the support frame and located above the rope groove; the pressure plate assembly is used to open and close the opening. By pulling the hoisting rope along the rope groove, the flexible net is raised to the support frame and the roof; when the pressure plate assembly closes the opening, the hoisting rope cannot detach from the opening; after the netting is installed and the hoisting rope is tensioned, the support frame descends vertically, the hoisting rope abuts against the pressure plate assembly, pushing the pressure plate assembly to open the opening, allowing the hoisting rope to detach from the rope groove through the opening.

[0017] This invention, by setting up a support frame, achieves reliable support for the lifting ropes connected to the flexible net, effectively replacing the support function of anchor cables and anchor rods, thus avoiding the problems of poor process safety and low construction efficiency associated with lifting the flexible net using anchor cables. By setting the support frame to be detachably installed on the top beam and / or anti-collision block at the top slab, the support frame is easy to assemble and disassemble, thereby improving the work efficiency of lifting the flexible net. By setting up a pressure plate assembly, the lifting ropes can be efficiently disconnected from the support frame after the net is hung and tensioned, ensuring the installation of the lifting ropes during the net hanging process. The device ensures proper positioning and reliable constraint of the hoisting rope on the undulating roof surface as the rope slides along the rope groove, thus guaranteeing the reliability and safety of the flexible netting installation. The proposed roadway netting device utilizes the front beam and anti-collision blocks on the working face lifting support for netting installation, effectively replacing the traditional method of using anchor cables to lift the flexible netting. It combines the netting installation process and changes the process of hoisting the flexible netting, ensuring successful installation of the flexible netting in one go. This invention has a simple structure, low cost, and reliable operation, making it suitable for widespread application. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of the external structure of the roadway mesh hanging device provided in an embodiment of the present invention is shown;

[0020] Figure 2 This diagram shows the external structure of the roadway mesh hanging device provided in an embodiment of the present invention from another angle;

[0021] Figure 3 The diagram shows a schematic representation of the roadway mesh hanging device provided in an embodiment of the present invention from a left-viewing angle.

[0022] The above figures include the following reference numerals:

[0023] 10. Support frame; 11. Rope groove; 12. Opening; 13. Restraint cavity;

[0024] 20. Pressure plate assembly; 21. Pressing plate; 211. Upper plate surface; 212. Lower plate surface; 22. Cylindrical component;

[0025] 30. Hanging net structure; 31. Barbs; 311. Back side; 312. One-way bevel;

[0026] 40. Curved parts. Detailed Implementation

[0027] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0028] like Figures 1 to 3 As shown, an embodiment of the present invention provides a roadway netting device. The device suspends a flexible net onto the roof of the roadway using a hoisting rope connected to the flexible net. The device includes: a support frame 10, detachably mounted on a top beam and / or anti-collision block that can be raised and lowered to the roof; the support frame 10 has a through rope groove 11, the inner wall of which slides against the outer periphery of the hoisting rope to limit its movement; the extension direction of the rope groove 11 is parallel to the extension direction of the hoisting rope and the extension direction of the roadway; and an opening 12 is provided above the rope groove 11 for the hoisting rope to pass through. The pressure plate assembly 20 is adjustablely mounted on the support frame 10 and located above the rope groove 11. The pressure plate assembly 20 is used to open and close the opening 12. By pulling the hoisting rope along the rope groove 11, the flexible net is driven to rise to the support frame 10 and the top plate. When the pressure plate assembly 20 closes the opening 12, the hoisting rope cannot detach from the opening 12. After the net is hung and the hoisting rope is tensioned, the support frame 10 descends vertically, the hoisting rope comes into contact with the pressure plate assembly 20, and pushes the pressure plate assembly 20 to open the opening 12, allowing the hoisting rope to detach from the rope groove 11 through the opening 12.

[0029] This invention, by setting up a support frame 10, achieves reliable support for the lifting ropes connected to the flexible net, effectively replacing the support function of anchor cables and anchor rods, thus avoiding the problems of poor process safety and low construction efficiency associated with lifting the flexible net using anchor cables. By setting the support frame 10 to be detachably installed on the top beam and / or anti-collision block at the top slab, the support frame 10 is easy to assemble and disassemble, thereby improving the work efficiency of lifting the flexible net. By setting up the pressure plate assembly 20, the lifting ropes can be efficiently disconnected from the support frame 10 after the net is hung and tensioned, ensuring the lifting is safe during the net hanging process. The proper installation of the rope ensures reliable constraint of the hoisting rope on the undulating roof surface when the hoisting rope slides along the rope groove 11, thereby guaranteeing the reliability and safety of the flexible netting installation. The roadway netting device proposed in this invention can utilize the front beam and anti-collision blocks on the working face lifting support for netting installation, effectively replacing the traditional method of hoisting flexible netting with anchor cables. It combines the netting installation process and changes the process of hoisting the flexible netting, ensuring successful installation of the flexible netting in one go. This invention has a simple structure, low cost, and reliable operation, making it suitable for widespread use.

[0030] The typical installation process for flexible safety nets is as follows: 1. Steel wire ropes are fixed to supports at the top of the mine shaft and then extend along the top of the shaft to the area requiring protection; 2. The flexible net is suspended from the steel wire ropes, usually secured by hooks, U-shaped clips, or other fixing devices; 3. When there is a risk of roof collapse, workers can pull the steel wire ropes to tighten the flexible net upwards, thus providing support and protection for the roof; 4. The special design of the flexible net gives it a certain degree of flexibility and elasticity, effectively dispersing and absorbing the impact force and falling debris generated during roof collapse, thereby reducing harm to miners and equipment; 5. Once the risk of roof collapse has passed, workers can release the steel wire ropes, loosen the flexible net, and perform necessary maintenance and inspections on the roof and the flexible net to ensure their normal operation and protective functions remain intact.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the pressure plate assembly 20 includes a pressing plate 21, which is rotatably mounted on the support frame. The projection of the pressing plate 21 onto the horizontal plane is a first projection, and the projection of the rope groove 11 onto the horizontal plane is a second projection. The first projection covers at least a portion of the second projection. By providing the pressing plate 21, the pressure plate assembly 20 can operate reliably, and its structure is simplified.

[0032] It should be noted that in one specific embodiment of the present invention, the hoisting rope is made of steel wire rope, which facilitates unified procurement while ensuring reliable operation.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, the pressure plate assembly 20 also includes a cylindrical member 22, which is fixedly disposed on the side of the pressure plate 21. When the lifting rope slides relative to the pressure plate 21, the outer periphery of the cylindrical member 22 abuts against the outer periphery of the lifting rope, so that the outer periphery of the lifting rope is spaced apart from the right-angled side of the pressure plate 21. By providing the cylindrical member 22, the outer periphery of the lifting rope does not directly contact the pressure plate 21, thereby avoiding significant wear and breakage of the lifting rope.

[0034] In one specific embodiment of the present invention, two cylindrical parts 22 are fixedly disposed on opposite sides of the pressure plate 21 by welding.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the pressing plate 21 is a rectangular plate with mutually perpendicular length, width, and thickness directions. The width direction of the pressing plate 21 is parallel to the extension direction of the rope groove 11, and the dimension of the pressing plate 21 in the width direction is not greater than the length of the rope groove 11 in the extension direction. The dimension of the pressing plate 21 in the length direction is not less than the width of the rope groove 11 perpendicular to the extension direction. The pressing plate 21 has a correspondingly arranged upper plate surface 211 and lower plate surface 212 in the thickness direction. The upper plate surface 211 is used to abut against the flexible net to press the flexible net onto the top plate. When the supporting frame 10 descends vertically, the hoisting rope abuts against the lower plate surface 212 to push the pressing plate 21 to rotate upward. And / or, the right-angled edges of the pressing plate 21 along the length direction are all rounded.

[0036] By setting the right-angled edges of the crimping plate 21 to be rounded along its length, the excessive wear and breakage of the lifting rope is avoided. By setting the dimensions of the crimping plate 21 in each direction, the material used in the crimping plate 21 is saved to the maximum extent while ensuring the reliability of the crimping plate 21, thus ensuring lightweight design.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, the roadway mesh hanging device also includes a mesh hanging structure 30, which is mounted on the support frame 10 and used to cooperate with the mesh of the flexible mesh to constrain it. By setting the mesh hanging structure 30, reliable constraint of the flexible mesh by the roadway mesh hanging device is achieved.

[0038] like Figure 1 , Figure 2 and Figure 3As shown, the netting structure 30 includes barbs 31, which are disposed on the support frame 10. Each barb 31 has a back surface 311 and a one-way inclined surface 312 inclined relative to the horizontal plane. When the flexible netting is hung in a predetermined direction, the flexible netting abuts against the one-way inclined surface 312 and slides along it. When the flexible netting moves in the opposite direction, the back surface 311 engages the mesh of the flexible netting to prevent movement. This design allows the netting structure 30 to provide unidirectional passage for the flexible netting while restricting it in other directions. This ensures that the flexible netting can be deployed unidirectionally without reversing its direction, thus improving the reliability and safety of the netting installation.

[0039] It should be noted that the barbs 31 can also dynamically scrape the mesh of the flexible net during the stretching process to prevent the flexible net from falling off and ensure the success of the one-time net pressing.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the roadway netting device also includes an arc-shaped component 40, which is fixedly installed at both ends of the rope groove 11. When the hoisting rope slides relative to the rope groove 11, the outer arc of the arc-shaped component 40 abuts against the outer circumference of the hoisting rope, so that the outer circumference of the hoisting rope is spaced apart from the right-angled edges at both ends of the rope groove 11. By setting the arc-shaped component 40, the outer circumference of the hoisting rope does not directly contact the relatively sharp right-angled edges at both ends of the rope groove 11, thereby avoiding significant wear and breakage of the hoisting rope.

[0041] like Figure 1 and Figure 2 As shown, the support frame 10 has a constraint cavity 13 inside, and the inner wall of the constraint cavity 13 is matched with the top beam and / or the anti-collision block for limiting; the size of the constraint cavity 13 is adapted to the size of the top beam and / or the anti-collision block. By setting the constraint cavity 13, reliable installation of the support frame 10 on the top beam and / or the anti-collision block is ensured.

[0042] It should be noted that in one specific embodiment of the present invention, the constraint cavity 13 is formed between two welded and fixed plates, which are clamped on both sides of the top beam and / or the anti-collision block by the two plates and are connected and fixed by pins or screws, which facilitates quick installation by workers and makes the operation reliable.

[0043] This invention also provides a working face netting system, including the aforementioned roadway netting device. The working face netting system further includes a hoisting rope and a liftable top beam. A support frame 10 is detachably mounted on the top beam via bolts to move up and down with the top beam. The flexible netting has mutually perpendicular length and width directions. The extension direction of the top beam is parallel to both the length direction of the flexible netting and the extension direction of the roadway. Multiple roadway netting devices are provided, spaced apart along the extension direction of the top beam, and simultaneously cooperate with a hoisting rope. The working face netting system proposed in this invention eliminates the need for anchor cables and bolts to support the hoisting rope, resulting in high netting efficiency and ensuring successful installation of the flexible netting in a single operation.

[0044] Specifically, the working face netting system also includes multiple pulley assemblies, multiple clips, and a cable car for pulling the hoisting rope; multiple pulley assemblies are spaced apart on the top plate to support the hoisting rope; multiple clips are spaced apart along the length of the flexible net and simultaneously cooperate with one hoisting rope; the flexible net is rolled up to form a net roll structure, the axis of the net roll structure being parallel to the length of the flexible net; the width direction of the flexible net is parallel to the width direction of the roadway; the roadway netting device also includes a netting structure 30, which includes barbs 31, which are disposed on the support frame 10, and each barb has a back surface 311 and a one-way inclined surface 312 inclined relative to the horizontal plane; the width direction of the flexible net includes two opposite first directions and second directions, and when the flexible net moves along the first direction, the flexible net abuts against the one-way inclined surface 312, and along... The unidirectional inclined plane 312 slides to allow the flexible net to unfold along the width direction of the roadway. When the flexible net moves in the second direction, the back surface 311 clamps the mesh of the flexible net to prevent its movement. When the flexible net moves along its length, the outer periphery of the barbs 31 clamps the mesh of the flexible net to prevent its movement. The pressure plate assembly 20 has a corresponding upper plate surface 211 and a lower plate surface 212 in the vertical direction. When the top beam descends vertically for the first time, the hoisting rope abuts against the lower plate surface 212 to push the pressure plate assembly 20 to rotate upward, opening the opening 12. The hoisting rope disengages from the rope groove 11 through the opening 12, and the hoisting rope is tensioned, causing the flexible net to approach the roof. After the top beam descends vertically for the first time, the top beam is controlled to rise, and the upper plate surface 211 abuts against the flexible net and the hoisting rope to press the flexible net onto the roof. This configuration makes the working face netting system reliable and simple in structure, and also provides structural support for subsequent intelligent control of underground netting operations.

[0045] The detailed working process of a specific embodiment of the present invention will now be described as follows:

[0046] Taking a working face with 176 hydraulic supports as an example, during the final meshing stage, between the 6th and 85th supports, the roadway meshing device proposed in this invention is installed on the anti-collision block on the tail side of the support machine for every 5 supports. Between the 95th and 170th supports, the roadway meshing device proposed in this invention is installed on the anti-collision block on the head side of the support machine for every 5 supports. One roadway meshing device proposed in this invention is installed on each of the left and right anti-collision blocks of the 90th support. During installation, the wire rope (i.e., the hoisting rope) is placed in the rope groove 11, and a wire rope clip is secured on the wire rope on the outer side of each of the two roadway meshing devices on the left and right sides of the 90th support as an intermediate anchor point to fix the wire rope. When lifting the mesh, the mesh is lifted using the two grooves... The winch tightens the wire rope, and the two ends are locked after tightening. When the netting is finished, during the first frame pulling, for the support with the roadway netting device installed, at least two other supports on each side must be pulled and the wire rope pressed down before the support with the roadway netting device can be pulled to ensure the smooth and safe netting. In addition, during the lowering and raising of the support with the roadway netting device, the wire rope will push open the pressure plate 21 and escape from the rope groove 11. During the raising of the support, the wire rope will be pressed down again on the pressure plate 21 (i.e., on the upper plate surface 211). At the same time, the barbs 31 can scrape the flexible net to prevent the wire rope and flexible net from falling off, so that the netting can be successfully pressed down in one go.

[0047] In summary, this invention provides a roadway netting device and a working face netting system. By setting up a support frame 10, this invention achieves reliable support for the hoisting ropes connected to the flexible netting, effectively replacing the support function of anchor cables and anchor rods, thus avoiding the problems of poor process safety and low construction efficiency associated with hoisting flexible netting using anchor cables. By setting up the support frame 10 to be detachably installed on the top beam and / or anti-collision block at the top plate, the support frame 10 is easy to assemble and disassemble, thereby improving the work efficiency of hoisting the flexible netting. By setting up the pressure plate assembly 20, the hoisting ropes can be efficiently detached from the support frame 10 after the netting is installed and tensioned. The connection ensures the proper installation of the hoisting rope during the netting process, and also ensures reliable constraint of the hoisting rope on the undulating roof plate when the hoisting rope slides along the rope groove 11, thereby ensuring the reliability and safety of the flexible netting installation. The netting device proposed in this invention can use the front beam and anti-collision blocks on the working face lifting support for netting operation, which can effectively replace the traditional method of hoisting flexible netting with anchor cables, merge the netting operation process and change the process of hoisting flexible netting, ensuring successful installation of flexible netting in one go. This invention has a simple structure, low cost and reliable operation, and is suitable for large-scale promotion and use.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0050] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A roadway mesh hanging device, characterized in that, The roadway netting device suspends the flexible netting onto the roadway roof via hoisting ropes connected to it, comprising: A support frame (10) is detachably mounted on a top beam and / or anti-collision block that can be raised and lowered to the top plate; the support frame (10) has a through rope groove (11), the inner wall of the rope groove (11) is slidably engaged with the outer periphery of the hoisting rope to limit the hoisting rope; the extension direction of the rope groove (11) is parallel to the extension direction of the hoisting rope and the extension direction of the tunnel; the upper part of the rope groove (11) has an opening (12) for the hoisting rope to pass through; A pressure plate assembly (20) is adjustablely disposed on the support frame (10) and located above the rope groove (11); the pressure plate assembly (20) is used to open and close the opening (12); In this process, by pulling the hoisting rope along the rope groove (11), the flexible net is lifted to the support frame (10) and the top plate; when the pressure plate assembly (20) closes the opening (12), the hoisting rope cannot detach from the opening (12); after the net is hung and the hoisting rope is tensioned, the support frame (10) descends vertically, the hoisting rope abuts against the pressure plate assembly (20), and pushes the pressure plate assembly (20) to open the opening (12), and the hoisting rope detaches from the rope groove (11) through the opening (12).

2. The roadway mesh hanging device according to claim 1, characterized in that, The pressure plate assembly (20) includes a pressure plate (21), which is rotatably mounted on the support frame. The projection of the pressure plate (21) on the horizontal plane is a first projection, and the projection of the rope groove (11) on the horizontal plane is a second projection. The first projection covers at least a portion of the second projection.

3. The roadway mesh hanging device according to claim 2, characterized in that, The pressure plate assembly (20) also includes a cylindrical member (22), which is fixedly disposed on the side of the pressure plate (21). When the lifting rope slides relative to the pressure plate (21), the outer periphery of the cylindrical member (22) is used to abut against the outer periphery of the lifting rope, so that the outer periphery of the lifting rope is spaced apart from the right-angle side of the pressure plate (21).

4. The roadway mesh hanging device according to claim 2, characterized in that, The pressing plate (21) is a rectangular plate with mutually perpendicular length, width and thickness directions. The width direction of the pressing plate (21) is parallel to the extension direction of the rope groove (11), and the dimension of the pressing plate (21) in the width direction is not greater than the length of the rope groove (11) in the extension direction. The dimension of the pressing plate (21) in the length direction is not less than the width of the rope groove (11) perpendicular to the extension direction. The pressing plate (21) has a corresponding upper plate surface (211) and lower plate surface (212) in the thickness direction. The upper plate surface (211) is used to abut against the flexible net to press the flexible net onto the top plate. When the supporting frame (10) descends vertically, the hoisting rope abuts against the lower plate surface (212) to push the pressing plate (21) to rotate upward. And / or, the right-angled edges of the pressing plate (21) along the length direction are rounded.

5. The roadway mesh hanging device according to claim 1, characterized in that, The roadway netting device also includes a netting structure (30), which is mounted on the support frame (10) and is used to cooperate with the mesh of the flexible netting to constrain the flexible netting.

6. The roadway mesh hanging device according to claim 5, characterized in that, The hanging net structure (30) includes barbs (31), which are disposed on the support frame (10). The barbs (31) have a back side (311) and a one-way inclined surface (312) that is inclined relative to the horizontal plane. When the flexible net is hung in a set direction, the flexible net abuts against the one-way inclined surface (312) and slides along the one-way inclined surface (312). When the flexible net moves in a direction opposite to the set direction, the back side (311) locks the mesh of the flexible net to prevent the flexible net from moving.

7. The roadway mesh hanging device according to claim 1, characterized in that, The roadway netting device also includes an arc-shaped component (40), which is fixedly disposed at both ends of the rope groove (11). When the hoisting rope slides relative to the rope groove (11), the outer arc of the arc-shaped component (40) is used to abut against the outer circumference of the hoisting rope, so that the outer circumference of the hoisting rope is spaced apart from the right-angled sides at both ends of the rope groove (11).

8. The roadway mesh hanging device according to claim 1, characterized in that, The bearing frame (10) has a constraint cavity (13) inside, and the inner wall of the constraint cavity (13) is matched with the top beam and / or the anti-collision block for limiting; the size of the constraint cavity (13) is adapted to the size of the top beam and / or the anti-collision block.

9. A working face wire mesh hanging system, characterized in that, The roadway netting device includes any one of claims 1 to 8, wherein the working face netting system further includes a hoisting rope and a liftable top beam, and the supporting frame (10) is detachably mounted on the top beam by bolts to follow the up and down movement of the top beam; wherein the flexible net has mutually perpendicular length and width directions; the extension direction of the top beam is parallel to the length direction of the flexible net and the extension direction of the roadway, respectively; there are multiple roadway netting devices, and the multiple roadway netting devices are spaced apart along the extension direction of the top beam and simultaneously cooperate with one hoisting rope.

10. The working face wire mesh hanging system according to claim 9, characterized in that, The working face netting system also includes multiple pulley assemblies, multiple clips, and a cable car for pulling the hoisting rope; the multiple pulley assemblies are spaced apart on the top plate to support the hoisting rope; the multiple clips are spaced apart along the length of the flexible net and simultaneously cooperate with one hoisting rope; the flexible net is rolled up to form a net roll structure, the axis of the net roll structure is parallel to the length of the flexible net; the width of the flexible net is parallel to the width of the roadway. The roadway netting device further includes a netting structure (30), which includes barbs (31) disposed on the support frame (10). The barbs (31) have a back surface (311) and a one-way inclined surface (312) inclined relative to the horizontal plane. The width direction of the flexible netting includes two opposite first and second directions. When the flexible netting moves along the first direction, it abuts against the one-way inclined surface (312) and slides along the one-way inclined surface (312) to allow the flexible netting to unfold along the width direction of the roadway. When the flexible netting moves along the second direction, the back surface (311) locks the mesh of the flexible netting to prevent the flexible netting from moving. When the flexible netting moves along the length direction of the flexible netting, the outer periphery of the barbs (31) locks the mesh of the flexible netting to prevent the flexible netting from moving. The pressure plate assembly (20) has an upper plate surface (211) and a lower plate surface (212) correspondingly arranged in the vertical direction. When the top beam descends vertically for the first time, the hoisting rope abuts against the lower plate surface (212) to push the pressure plate assembly (20) to rotate upward and push the pressure plate assembly (20) to open the opening (12). The hoisting rope disengages from the rope groove (11) through the opening (12), and the hoisting rope is tensioned, causing the flexible net to approach the top plate. After the top beam descends vertically for the first time, the top beam is controlled to rise, and the upper plate surface (211) abuts against the flexible net and the hoisting rope to press the flexible net onto the top plate.

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