A tunnel support grid device

Abstract

This utility model belongs to the field of underground roadway support technology, specifically relating to a roadway support netting device, including a lifting mechanism, a top netting support mechanism, and a side netting support mechanism, which are respectively used to drive the lifting and lowering of the top netting and the side netting, the forward and backward movement and transportation of the top netting, and the left and right movement and transportation of the side netting. The top netting support mechanism includes a support frame and a first drive component, which drives the top netting to move along the tunneling direction of the tunneling machine. The side netting support mechanism includes a side netting frame and a second drive component, which drives the side netting to move along both sides of the tunneling machine. This utility model fixes and transports the top netting and the side netting, drives the top netting to move forward and backward to ensure their alignment, and drives the side netting to move inward to complete the overlap of the top netting and the side netting, thus completing the anchor netting installation and reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model belongs to the field of underground roadway support technology, specifically relating to a roadway support grid device. Background Technology

[0002] Support is an essential process in underground tunneling faces. Support at the tunneling face mainly involves laying metal anchor mesh and installing rock bolts to stabilize the surrounding rock of the underground tunnel, ensuring the safety of underground workers. Currently, the laying of underground anchor mesh is primarily done manually, involving manual transport and installation, which is labor-intensive and unsafe. Summary of the Invention

[0003] This invention addresses the problem that the laying of existing underground anchor nets mainly relies on manual handling and hanging, which is labor-intensive and unsafe. It provides a roadway support netting device that transports the top net via a top net support mechanism and the side net via a side net support mechanism. A lifting mechanism adjusts the anchor net to a certain height. A first drive component drives the top net to move back and forth, and a second drive component drives the side net to move left and right from the roadway sidewall towards the center of the roadway. This allows for adjustment and support limiting of the anchor net hanging position at different roadway heights.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A roadway support netting device includes a lifting mechanism, a top netting support mechanism, and a side netting support mechanism. The lifting mechanism is fixedly mounted on a tunneling machine and is used to drive the top netting support mechanism to lift and lower. The top netting support mechanism is fixedly mounted above the lifting mechanism and is used to support and transport the top netting. Side netting support mechanisms are hinged to both sides of the top netting support mechanism and are used to support and transport the side netting. The top netting support mechanism includes a support frame and a first drive assembly. The first drive assembly is located on both sides of the support frame and its output end is fixedly connected to the front end of the top netting. The first drive assembly is used to drive the top netting to move and lay along the tunneling direction of the tunneling machine. The side netting support mechanism includes a side netting frame and a second drive assembly. The second drive assembly is located on both sides of the side netting frame and its output end is fixedly connected to the upper end of the corresponding side netting. The second drive assembly is used to drive the side netting to move along the roadway sides and the middle of the tunneling machine. The anchor netting position is adjusted by the forward and backward movement of the top netting and the left and right movement of the upper end of the side netting.

[0006] Preferably, a side net swing drive mechanism is provided between the top net support mechanism and the side net support mechanism to drive the side net support mechanism to swing up and down along both sides of the top net support mechanism.

[0007] Preferably, the top net support mechanism is hinged to both sides of the lower end of the top net support mechanism and a side net swing drive mechanism is hinged to the lower side of the corresponding side net support mechanism. By driving the side net support mechanism to swing, interference with the roadway is avoided during the lifting and lowering movement of the side net.

[0008] Preferably, the lifting mechanism includes a multi-stage telescopic rod and a lifting drive device mounted on the multi-stage telescopic rod. The lifting drive device is used to drive the multi-stage telescopic rod to extend and retract, thereby achieving the lifting and lowering of the top net support mechanism to adapt to different roadway heights.

[0009] Preferably, the support frame includes two first sleeves, and a plurality of first support rods are fixedly arranged between the two first sleeves. A first drive assembly is fixedly arranged inside the first sleeve. A first through hole is opened on the upper side of the first sleeve. A hanger is fixedly arranged on the upper side of the output end of the first drive assembly. The hanger extends upward through the first through hole and passes through the top net. The top net is driven to move back and forth by the first drive assembly. The support rods ensure that the top net is placed flat and transported, and the hanger ensures that the top net will not detach from the support frame when moving back and forth.

[0010] Preferably, a steel strip bracket located in the first through hole is fixedly disposed above the output end of the first drive component, and both ends of the steel strip bracket are provided with hangers to support and limit the steel strip.

[0011] Preferably, the side net frame includes two second sleeves, and a plurality of second support rods are fixedly arranged between the two second sleeves. A second drive assembly is fixedly arranged inside the second sleeve. A second through hole is opened on the upper side of the second sleeve. A hanger is fixedly arranged on the upper side of the output end of the second drive assembly. The hanger extends upward through the second through hole and passes through the side net. The second drive assembly drives the upper part of the side net to move left and right to overlap with the top net. The second support rods ensure that the side net is placed flat on the side net frame, and the corresponding hanger ensures that the side net will not fall off due to the up and down swing of the swing mechanism when it moves on the side net frame.

[0012] Preferably, a third drive assembly is also fixedly connected inside the second sleeve. The output end of the third drive assembly is fixedly connected to the third sleeve. The third sleeve is movably sleeved inside the second sleeve and extends out of the end of the second sleeve. A second drag bar is fixedly provided between the ends of the two third sleeves that extend out of the corresponding second sleeves. The third drive assembly drives the third sleeve to extend and retract to adapt to tunnels of different widths.

[0013] The beneficial effects of this utility model through the above technical solution are as follows:

[0014] 1. This utility model, by setting a lifting mechanism on the tunneling machine and driving the top net support mechanism to rise and fall through the lifting mechanism, facilitates the placement of the top net on the top net support mechanism and makes it easy to adjust the height of the top net to adapt to different roadway heights. The top net is driven to move back and forth on the top net support mechanism through the first driving component to adjust the position of the top net during installation, which effectively improves the efficiency of anchor net transportation and installation and reduces the labor intensity of workers. Moreover, when the top net is a roll net, the reciprocating lifting of the lifting mechanism can also achieve continuous laying of the top net.

[0015] 2. The side net support mechanism of this utility model, which is set by swinging, facilitates the hanging and placement of the side net on the side net support mechanism. On the other hand, it avoids interference with the structure inside the roadway during the lifting and moving of the side net. The horizontal part of the side net hanging on the side net support mechanism is driven to move left and right by the second drive component, thereby adjusting the overlapping part between the upper part of the side net and the top net, which facilitates the overlapping and installation of the top net and the side net.

[0016] 3. This utility model utilizes a lifting mechanism, a top net support mechanism, and a side net support mechanism to achieve convenient net hanging operation, adapt to various roadway heights and widths, facilitate the adjustment of anchor drill positions, realize mechanized net hanging operation, improve the construction adaptability of roadway support, and reduce the labor intensity of personnel.

[0017] 4. This utility model uses a third drive assembly to drive the third sleeve to extend and retract along the end of the second sleeve, so that the side net support mechanism can be applied to tunnels of different widths. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the lifting mechanism of this utility model.

[0020] Figure 3 This is a schematic diagram of the top net support mechanism of this utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the top net support mechanism of this utility model. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the side net support mechanism of this utility model.

[0023] In the attached diagram, the numbers are: 1 for the lifting mechanism, 11 for the multi-stage telescopic rod, and 12 for the lifting drive device;

[0024] 2 is the top net support mechanism, 21 is the first sleeve, 22 is the first support rod, 23 is the first drive assembly, 24 is the first through hole, and 25 is the steel strip bracket;

[0025] 3 is the side net support mechanism, 31 is the second sleeve, 32 is the second support rod, 33 is the second drive assembly, and 34 is the second through hole;

[0026] 4 is the side net swing drive mechanism, and 5 is the hanging part. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] like Figures 1-5 As shown, this embodiment provides a roadway support netting device, including a lifting mechanism 1, a top netting support mechanism 2, and a side netting support mechanism 3. The lifting mechanism 1 is fixedly mounted on the tunneling machine and is used to drive the top netting support mechanism 2 to rise and fall. The lifting mechanism 1 includes a multi-stage telescopic rod 11 and a lifting drive device 12 mounted on the multi-stage telescopic rod 11. The lifting drive device 12 is used to drive the multi-stage telescopic rod 11 to extend and retract. Specifically, the multi-stage telescopic rod 11 is a three-stage telescopic structure, including a fixed arm, a first-stage lifting arm, and a second-stage lifting arm. The lower end of the fixed arm is fixedly mounted on the tunneling machine. The first-stage lifting arm is nested on the fixed arm, and the second-stage lifting arm is nested on the first-stage lifting arm. The upper end of the second-stage telescopic arm is fixedly connected to the top netting support mechanism 2. The fixed arm and the first-stage lifting arm, and the first-stage lifting arm and the second-stage lifting arm, always maintain a certain overlap length during the lifting process to ensure the structural strength and stability of the lifting mechanism 1, and to ensure that no jamming occurs during lifting and moving.

[0029] The lifting drive device 12 has a multi-cylinder structure. Specifically, the lifting drive device 12 includes a first cylinder and a second cylinder. The fixed end and the telescopic end of the first cylinder are respectively connected to the upper end of the fixed arm and the first-stage telescopic arm. The fixed end and the telescopic end of the second cylinder are respectively connected to the upper end of the first-stage telescopic arm and the second-stage telescopic arm.

[0030] The top net support mechanism 2 is fixedly installed above the lifting mechanism 1 to support and transport the top net, such as... Figure 3As shown, the top net support mechanism 2 includes a support frame and a first drive assembly. The first drive assembly is located on both sides of the support frame. The support frame includes two first sleeves 21, and a plurality of first support rods 22 are fixedly arranged between the two first sleeves 21. A first drive assembly 23 is fixedly arranged inside the first sleeve 21. A first through hole 24 is opened on the upper side of the first sleeve 21. The first through hole 24 is a strip hole. The output end of the first drive assembly is fixedly connected to the front end of the top net. The first drive assembly is used to drive the top net to move along the tunneling direction of the tunneling machine. The first drive assembly 23 has a hanging piece 5 fixedly installed on the upper side of its output end. The hanging piece 5 extends upward through the first through hole 24 and passes through the top net. The hanging piece 5 adopts a bolt structure. One of the mesh holes of the top net is fitted onto the bolt and located below the nut, so as to realize the hanging and limiting of the top net. The first drive assembly 23 can drive the hanging piece 5 to move back and forth (back and forth refers to the front and back direction of the tunneling machine), which drives the top net to move back and forth on the top net support mechanism 2. The first support rod 22 supports the middle part of the top net to ensure that it is placed flat on the top net support mechanism 2.

[0031] As one possible implementation, the hanging component 5 is a hook.

[0032] like Figure 4 As shown, in one possible implementation, a steel strip bracket 25 located in the first through hole 24 is fixedly installed above the output end of the first drive component 23. Both ends of the steel strip bracket 25 are provided with hangers 5. The steel strip bracket 25 is a plate-shaped structure with both ends raised, which is used to support and limit the steel strip on the lower side of the top net (i.e., the steel strip on the lower side of the front end of the top net located on the top net support mechanism 2). The first drive component 23 drives the hangers 5 and the steel strip bracket 25 to move synchronously.

[0033] In one possible implementation, an inner sleeve is slidably disposed inside the first sleeve 21, and the output end of the first drive assembly 23 is fixedly connected to the inner sleeve. Two hanging parts 5 are fixedly disposed on the upper side of the inner sleeve, and a steel strip bracket 25 is disposed between the two hanging parts 5. The upper sides of the two ends of the steel strip bracket 25 are flush with the upper side of the first sleeve 21.

[0034] Both sides of the top net support mechanism 2 are hinged with side net support mechanisms 3, which are used to support and transport the side nets. Each side net support mechanism 3 includes a side net frame and a second drive assembly 33, located on both sides of the side net frame. The side net frame includes two second sleeves 31, with multiple second support rods 32 fixedly arranged between them. A second drive assembly 33 is fixedly installed inside each second sleeve 31. A second through hole 34, which is a strip-shaped hole, is opened on the upper side of each second sleeve 31. The output end of the second drive assembly is fixedly connected to the upper end of the corresponding side net. The component is used to drive the side net to move along the sides of the roadway and the middle of the tunneling machine. The upper side of the output end of the second drive component 33 is fixedly provided with a hanging part 5. The hanging part 5 extends upward through the second through hole 34 and passes through the side net. The hanging part 5 has the same structure as the hanging part 5 on the top net support mechanism 2. The side net is hung and limited by the hanging part 5. The upper end of the side net is hung on the hanging part 5 and placed horizontally on the side net frame. The lower end hangs naturally from the side of the two side net frames that are far apart. The second drive component 33 can drive the corresponding hanging part 5 to move left and right (the left and right direction is the direction of the two sides of the tunneling machine), drive the upper end of the side net to move left and right, and adjust the upper end of the side net to overlap with the top net.

[0035] It should be noted that the horizontal part of the side net located on the side net support mechanism 3 is the part that overlaps with the top net. This part does not have a steel strip. Therefore, no steel strip bracket 25 is provided on the side net support mechanism 3.

[0036] A side net swing drive mechanism 4 is provided between the top net support mechanism 2 and the side net support mechanism 3. This mechanism drives the side net support mechanism 3 to swing up and down along both sides of the top net support mechanism 2. The side net swing drive mechanism 4 is hinged to both sides of the lower end of the top net support mechanism 2. The other end of the side net swing drive mechanism 4 is hinged to the lower side of the corresponding side net support mechanism 3. The side net support mechanism 3 is driven to swing by the side net swing drive mechanism 4, causing its free end to descend and move towards the inward direction. This facilitates the hanging of the side net on the hanging parts 5 on the side net frame and avoids interference between the side net and the side wall of the roadway during the lifting and lowering process.

[0037] A third drive assembly is also fixedly connected inside the second sleeve 31. The output end of the third drive assembly is fixedly connected to the third sleeve. The third sleeve is movably sleeved inside the second sleeve and extends out of the end of the second sleeve. A second drag bar 32 is fixedly provided between the ends of the two third sleeves that extend out of the corresponding second sleeves. The third sleeve is driven to extend and retract by the third drive assembly to adjust the distance between the ends of the two side net support frames that are far apart, that is, to adjust the width between the two sides of the netting device of this utility model, so as to adapt to the side netting conveying and adjustment of roadways with different widths.

[0038] The side net swing drive mechanism 4, the first drive component 23, the second drive component 33, and the third drive component are all hydraulic cylinders, or other existing technologies that can satisfy the drive telescopic action can be adopted.

[0039] As one possible implementation, a support rod is fixedly provided at the rear end of the first sleeve 21. The support rod ensures that the top net is in a horizontal state during the conveying process. The support rod is a telescopic rod, which is used to use top nets of different lengths.

[0040] As one possible implementation, a sliding guide plate is provided on one side of the free end of the side net frame. Specifically, the sliding guide plate is fixedly installed at the free end of the third sleeve. The outer side of the sliding guide plate is arc-shaped to ensure a smooth transition between the upper horizontal part and the lower vertical part of the side net, while preventing jamming when the side net moves left and right, thus ensuring the quality of anchoring.

[0041] In use, the lifting mechanism 1 first drives the top net support mechanism 2 to descend to the lowest position, hangs the front end of the top net on the corresponding hanging piece 5, and makes the corresponding steel strip on the steel strip bracket 5. Then, the side net swing drive mechanism 4 drives the free end of the side net support mechanism 3 to rotate downward, hangs the upper end of the side net on the corresponding hanging piece 5, and then the first drive component 23 drives the top net to move back and forth, so that the top net and the side net are aligned front and back.

[0042] Then, the lifting mechanism 1 first drives the top net support mechanism 2 to rise until the top net reaches the top of the roadway. As the free end of the side net support mechanism 3 rotates downward, the side net moves towards the tunneling machine, avoiding interference between the side net and the roadway during the lifting process driven by the lifting mechanism 1. Then, the side net swing drive mechanism 4 drives the free end of the side net support mechanism 3 to rotate upward until the upper part of the side net is in a horizontal state. At this time, the naturally hanging part of the side net contacts the side wall of the roadway. The second drive component 33 drives the horizontal part at the upper part of the side net to move from both sides of the roadway towards the middle, overlapping the side net with the top net, completing the netting work. Then, the anchoring work can be carried out.

[0043] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A tunnel support network device, characterized in that, It includes a lifting mechanism (1), a top net support mechanism (2), and a side net support mechanism (3). The lifting mechanism (1) is fixedly installed on the tunneling machine and is used to drive the top net support mechanism (2) to lift. The top net support mechanism (2) is fixedly installed above the lifting mechanism (1) and is used to support and transport the top net. The top net support mechanism (2) is hinged to both sides of the top net support mechanism (2) and is used to support and transport the side net. The top net support mechanism (2) includes a support frame and a first drive component. The first drive component is located on both sides of the support frame. The output end of the first drive component is fixedly connected to the front end of the top net. The first drive component is used to drive the top net to move along the tunneling direction of the tunneling machine. The side net support mechanism (3) includes a side net frame and a second drive component. The second drive component is located on both sides of the side net frame. The output end of the second drive component is fixedly connected to the upper end of the corresponding side net. The second drive component is used to drive the side net to move along the sides of the roadway and the middle of the tunneling machine.

2. The tunnel support and grid connection device according to claim 1, characterized in that, A side net swing drive mechanism (4) is provided between the top net support mechanism (2) and the side net support mechanism (3) to drive the side net support mechanism (3) to swing up and down along both sides of the top net support mechanism (2).

3. The tunnel support network device according to claim 2, characterized in that, The top net support mechanism (2) is hinged to both sides of the lower end of the side net swing drive mechanism (4), and the other end of the side net swing drive mechanism (4) is hinged to the lower side of the corresponding side net support mechanism (3).

4. The tunnel support network device according to claim 1, characterized in that, The lifting mechanism (1) includes a multi-stage telescopic rod (11) and a lifting drive device (12) mounted on the multi-stage telescopic rod (11). The lifting drive device (12) is used to drive the multi-stage telescopic rod (11) to extend and retract.

5. A tunnel support network device according to claim 1, characterized in that, The support frame includes two first sleeves (21), and a plurality of first support rods (22) are fixedly arranged between the two first sleeves (21). A first drive assembly (23) is fixedly arranged inside the first sleeve (21). A first through hole (24) is opened on the upper side of the first sleeve (21). A hanging piece (5) is fixedly arranged on the upper side of the output end of the first drive assembly (23). The hanging piece (5) extends upward through the first through hole (24) and passes through the top net.

6. A tunnel support network device according to claim 5, characterized in that, A steel strip bracket (25) located in the first through hole (24) is fixedly installed above the output end of the first drive component (23), and a hanger (5) is provided at both ends of the steel strip bracket (25).

7. A tunnel support network device according to claim 1, characterized in that, The side net frame includes two second sleeves (31), and a plurality of second drag rods (32) are fixedly arranged between the two second sleeves (31). A second drive assembly (33) is fixedly arranged inside the second sleeve (31). A second through hole (34) is opened on the upper side of the second sleeve (31). A hanger (5) is fixedly arranged on the upper side of the output end of the second drive assembly (33). The hanger (5) extends upward through the second through hole (34) and passes through the side net.

8. A tunnel support network device according to claim 7, characterized in that, A third drive assembly is also fixedly connected inside the second sleeve (31). The output end of the third drive assembly is fixedly connected to the third sleeve. The third sleeve is movably sleeved inside the second sleeve and extends out of the end of the second sleeve. A second drag rod (32) is fixedly provided between the ends of the two third sleeves that extend out of the corresponding second sleeves.

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