Roadway roof supporting device for mining total-rock tunneling machine

Abstract

The utility model relates to the technical field of roadway supporting, and provides a roadway roof supporting device for a mining total rock heading machine, which comprises a main jacking frame, secondary jacking frames are movably arranged among a plurality of rod bodies of the main jacking frame, and the lower ends of the secondary jacking frames and the lower end of the main jacking frame are respectively connected with a jacking support in a supporting manner; an adjusting structure is arranged at the position, close to the lower end, of the outer surface of the jacking support, a moving-away structure is connected between the secondary jacking frame and the main jacking frame, and a reinforcing structure is arranged at the position, close to one end, of the outer surface of the secondary jacking frame. The jacking support is a support of a telescopic movable rod, a jacking air cylinder is arranged in the support and used for jacking the jacking support to extend to jack the secondary jacking frame and the main jacking frame upwards, and the interior, close to the lower end, of the jacking support is of a cavity structure. By means of the technical scheme, the problems that the size of the contact space between the bottom of an existing supporting device and the lower portion of a roadway is fixed, the space of the bottom of a jacking air cylinder for supporting is small, and supporting stability is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, and specifically to a tunnel roof support device for a full-rock tunneling machine for a mine. Background Art

[0002] Tunnel support is an essential protective measure in mining excavation. Through the support of the tunnel by the support device, the interior of the tunnel can be kept stable, effectively avoiding possible collapse, ensuring the stability of the tunnel surrounding rock mass, and ultimately protecting the safety of personnel inside the tunnel. Tunnel support devices play an important role in full-rock excavation in mines;

[0003] After searching, the application publication number is CN114526084A, which is a device and method for supporting the top plate of a mine full-rock tunnel boring machine. In the utility model, a telescopic support plate is connected to the shield of the full-rock tunnel boring machine. When the full-rock tunnel boring machine is excavating, the cutterhead and the shield move forward, and the telescopic support plate extends from the shield to temporarily support the tunnel top plate formed by the full-rock tunnel boring machine, thereby preventing the tunnel top plate from breaking and falling, and strengthening the control of the tunnel top plate;

[0004] However, the contact space between the bottom of the above-mentioned existing support device and the bottom of the tunnel is fixed, the bottom space of the supporting jacking cylinder is small, and the support stability is poor. For this reason, we propose a tunnel roof support device for a full-rock tunneling machine for mining. Utility Model Content

[0005] The utility model provides a tunnel roof support device for a full-rock tunneling machine for mining, which solves the problems mentioned in the background technology that the contact space between the bottom of the existing support device and the bottom of the tunnel is fixed, the bottom space of the supporting jacking cylinder is small, and the supporting stability is poor.

[0006] The technical solution of the utility model is as follows:

[0007] A mine all-rock tunneling machine roadway roof support device, comprising a main jacking frame, a secondary jacking frame movably arranged between a plurality of rod bodies of the main jacking frame, the lower ends of the secondary jacking frame and the main jacking frame are both supported and connected with jacking frames, an adjustment structure is arranged near the lower end of the outer surface of the jacking frame, a removal structure is connected between the secondary jacking frame and the main jacking frame, and a reinforcement structure is arranged near one end of the outer surface of the secondary jacking frame;

[0008] The jacking bracket is a bracket with a retractable movable rod, and a jacking cylinder is provided inside the bracket for jacking the jacking bracket to extend and jack up the secondary jacking bracket and the main jacking bracket respectively. The interior of the jacking bracket near the lower end is a cavity structure, and the adjustment structure includes an adjusting electric cylinder arranged in the internal cavity of the jacking bracket, the lower end of the jacking bracket is fixedly connected to a base plate, and a connecting hole connected to the interior of the cavity is provided at the outer surface corresponding to the cavity of the jacking bracket, a slide groove is provided on the outer surface of the base plate, and strip grooves are provided on the outer surface of the base plate at both sides of the slide groove, a sliding block is provided on the inner side of the slide groove, a protruding block is fixedly connected to the outer surface of the sliding block, and a No. 1 connecting block is fixedly connected to the upper end of the sliding block, and a No. 2 connecting block is fixedly connected to the outer surface of the output end of the adjusting electric cylinder, and a connecting bracket is hingedly connected between the No. 2 connecting block and the No. 1 connecting block.

[0009] As a further technical solution of the utility model, the removal structure includes a No. 1 fixing plate fixedly connected to the lower end of the main lifting frame, and a No. 2 fixing plate is fixedly connected to the lower end of the secondary lifting frame. The number of the No. 1 fixing plates is two groups and they are distributed at intervals. A removal electric cylinder is connected between one group of the No. 1 fixing plates and the No. 2 fixing plates, a through rod is fixedly connected between the two groups of the No. 1 fixing plates, and a reinforcement kit is fixedly connected to the outer surface of the No. 2 fixing plate.

[0010] As a further technical solution of the utility model, the secondary lifting frame and the main lifting frame are staggered, and the reinforcement structure includes a telescopic cylinder fixedly connected to the outer surface of the lower end of the secondary lifting frame near one end, the output end of the telescopic cylinder is fixedly connected to a C-shaped frame, and the top end of the C-shaped frame is fixedly connected to a jacking frame.

[0011] As a further technical solution of the utility model, the number of corresponding lifting brackets of a group of the secondary lifting frame and the main lifting frame is two groups, and they are symmetrically distributed, and the sliding block and the protruding block are slidably connected to the bottom plate.

[0012] As a further technical solution of the utility model, the number of the slide grooves is several groups and distributed in a ring array, the upper and lower surfaces of the sliding block are flush with the upper and lower surfaces of the bottom plate, the number of the No. 2 connecting blocks is equal to the number of sliding blocks, and the positions of the two correspond one to one.

[0013] As a further technical solution of the utility model, the slide groove extends from the inside to the outside of the base plate, the protruding block slides inside the strip groove, and the sliding block moves back and forth on the outer surface of the base plate by extending or contracting the adjusting electric cylinder.

[0014] As a further technical solution of the utility model, the end of the removing electric cylinder away from the output is fixedly connected to a group of No. 1 fixed plate, the output end of the removing electric cylinder is fixedly connected to the No. 2 fixed plate, the number of the removing electric cylinders is several groups and the distances between two adjacent groups of removing electric cylinders are equal.

[0015] As a further technical solution of the utility model, the penetration rod is a regular quadrangular prism structure, the number of the reinforcement kits is equal to the number of the penetration rods, and the positions of the reinforcement kits correspond one to one with the positions of the penetration rods.

[0016] As a further technical solution of the utility model, the through rod passes through the reinforcement kit, and the reinforcement kit and the through rod are slidably connected. The secondary lifting frame and the main lifting frame are moved away from or closer to each other through the jacking contraction of the removal electric cylinder.

[0017] As a further technical solution of the utility model, the telescopic cylinder is fixed to the secondary jacking frame by bolts, the U-shaped frame is a "U"-shaped bracket structure, and the number of jacking frames corresponding to one group of U-shaped frames is two groups, and the length direction of the jacking frame is parallel to the length direction of the secondary jacking frame and the main jacking frame.

[0018] The working principle and beneficial effects of the utility model are:

[0019] Through the function of the adjustment structure in the utility model, during use, the supporting effect of the base plate on the jacking bracket can be effectively strengthened, the support of the jacking bracket to the entire device can be made more stable, the deviation of the support can be reduced, and the supporting effect of the entire support device can be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a schematic diagram of the structure of the utility model device;

[0022] Figure 2 It is a partial structural schematic diagram of the adjustment structure of the utility model;

[0023] Figure 3 It is a partial structural diagram of the back of the device of the utility model where the structure is removed;

[0024] Figure 4 It is a schematic diagram of the partial structure of the device of the utility model with the support removed;

[0025] Figure 5 For this utility model Figure 4 A magnified view of the local structure;

[0026] Figure 6 This is a schematic diagram of the partial structure of the reinforcement structure of the utility model from another perspective.

[0027] In the figure: 1. Main lifting frame; 2. Secondary lifting frame; 3. Lifting bracket; 4. Adjusting structure; 41. Adjusting electric cylinder; 42. Bottom plate; 43. Connecting hole; 44. Slide groove; 45. Strip groove; 46. Sliding block; 47. Protruding block; 48. No. 1 connecting block; 49. No. 2 connecting block; 40. Connecting bracket; 5. Removing structure; 51. No. 1 fixing plate; 52. No. 2 fixing plate; 53. Removing electric cylinder; 54. Through rod; 55. Reinforcement kit; 6. Reinforcement structure; 61. Telescopic cylinder; 62. C-shaped frame; 63. Lifting frame. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] like Figure 1~Figure 2 and Figure 4 As shown, this embodiment proposes a mine all-rock tunneling machine roadway roof support device, including a main jacking frame 1, a secondary jacking frame 2 is movably arranged between a plurality of rods of the main jacking frame 1, a jacking frame 3 is supported and connected at the lower ends of the secondary jacking frame 2 and the main jacking frame 1, an adjustment structure 4 is arranged on the outer surface of the jacking frame 3 near the lower end, a removal structure 5 is connected between the secondary jacking frame 2 and the main jacking frame 1, and a reinforcement structure 6 is arranged on the outer surface of the secondary jacking frame 2 near one end;

[0031] The jacking bracket 3 is a bracket with a retractable movable rod, and a jacking cylinder is provided inside the bracket for jacking the jacking bracket 3 to extend and jack up the secondary jacking frame 2 and the main jacking frame 1 respectively. The interior of the jacking bracket 3 near the lower end is a cavity structure, and the adjustment structure 4 includes an adjusting electric cylinder 41 arranged in the internal cavity of the jacking bracket 3, and the lower end of the jacking bracket 3 is fixedly connected to a bottom plate 42, and a connecting hole 43 connected to the interior of the cavity is provided at the outer surface corresponding to the cavity of the jacking bracket 3, and a slide groove 44 is provided on the outer surface of the bottom plate 42, and strip grooves 45 are provided on the outer surface of the bottom plate 42 corresponding to both sides of the slide groove 44, and a sliding block 46 is provided on the inner side of the slide groove 44, and a protruding block 47 is fixedly connected to the outer surface of the sliding block 46, and a No. 1 connecting block 48 is fixedly connected to the upper end of the sliding block 46, and a No. 2 connecting block 49 is fixedly connected to the outer surface of the output end of the adjusting electric cylinder 41, and a connecting bracket 40 is hinged between the No. 2 connecting block 49 and the No. 1 connecting block 48.

[0032] There are two groups of lifting brackets 3 corresponding to a group of secondary lifting frames 2 and a main lifting frame 1, and they are symmetrically distributed. The sliding blocks 46 and the protruding blocks 47 are both slidably connected to the bottom plate 42. There are several groups of slide grooves 44, which are distributed in a ring array. The upper and lower surfaces of the sliding blocks 46 are flush with the upper and lower surfaces of the bottom plate 42. The number of No. 2 connecting blocks 49 is equal to the number of sliding blocks 46, and the positions of the two correspond one to one. The slide grooves 44 extend from the inside to the outside of the bottom plate 42, and the protruding blocks 47 slide inside the strip grooves 45. The sliding blocks 46 are moved back and forth on the outer surface of the bottom plate 42 by adjusting the extension or contraction of the electric cylinder 41.

[0033] In this embodiment, during use, the supporting effect of the bottom plate 42 on the jacking bracket 3 can be effectively strengthened, the support of the jacking bracket 3 on the entire device can be made more stable, the deviation of the support can be reduced, and the supporting effect of the entire support device can be better.

[0034] Example 2

[0035] like Figure 3 As shown, on the basis of Example 1, it is further proposed that the removal structure 5 includes a No. 1 fixing plate 51 fixedly connected to the lower end of the main lifting frame 1, a No. 2 fixing plate 52 is fixedly connected to the lower end of the secondary lifting frame 2, the number of the No. 1 fixing plates 51 is two groups and they are distributed at intervals, a removal electric cylinder 53 is connected between one group of No. 1 fixing plates 51 and the No. 2 fixing plates 52, a through rod 54 is fixedly connected between the two groups of No. 1 fixing plates 51, and a reinforcement kit 55 is fixedly connected to the outer surface of the No. 2 fixing plate 52.

[0036] One end of the removal electric cylinder 53 away from the output is fixedly connected to a group of No. 1 fixing plates 51, and the output end of the removal electric cylinder 53 is fixedly connected to the No. 2 fixing plate 52. The number of the removal electric cylinders 53 is several groups, and the spacing between two adjacent groups of removal electric cylinders 53 is equal; the through rod 54 is a regular quadrangular prism structure, the number of reinforcement kits 55 is equal to the number of the through rods 54, and the positions of the reinforcement kits 55 correspond one to one to the positions of the through rods 54; the through rods 54 penetrate the reinforcement kits 55, and the reinforcement kits 55 and the through rods 54 are slidably connected, and the secondary lifting frame 2 and the main lifting frame 1 are moved away from or approached each other by the jacking contraction of the removal electric cylinder 53.

[0037] In this embodiment, the entire support device can achieve the walking function while effectively maintaining the overall straightness and stability of the device, which can not only effectively prevent the device from deflecting, but also maintain the stability of the device during the removal process.

[0038] Example 3

[0039] like Figure 5~Figure 6As shown, on the basis of Example 2, it is also proposed that the secondary lifting frame 2 and the main lifting frame 1 are staggered, and the reinforcement structure 6 includes a telescopic cylinder 61 fixedly connected to the outer surface of the lower end of the secondary lifting frame 2 near one end, the output end of the telescopic cylinder 61 is fixedly connected to a C-shaped frame 62, and the top end of the C-shaped frame 62 is fixedly connected to a jacking frame 63.

[0040] The telescopic cylinder 61 is fixed to the secondary lifting frame 2 by bolts. The U-shaped frame 62 is a "U"-shaped bracket structure. One set of U-shaped frames 62 corresponds to two sets of jacking frames 63. The length direction of the jacking frame 63 is parallel to the length direction of the secondary lifting frame 2 and the main lifting frame 1.

[0041] In this embodiment, the stability of the support after the device is extended can be effectively enhanced, and the supporting surface of the secondary lifting frame 2 and the nail clippers on the top of the tunnel can be increased, so that the supporting effect during removal and separation is better.

[0042] In summary, when in use, the user can put the device into the part of the tunnel that needs to be supported, first extend the cylinder inside the jacking bracket 3, so that the secondary jacking frame 2 and the main jacking frame 1 can be pushed to the top of the tunnel, so as to support the tunnel, and when it is necessary to move it, the cylinder inside the jacking bracket 3 used to push the secondary jacking frame 2 can be contracted first, so that the lower end of the jacking bracket 3 is separated from the bottom of the tunnel, and after separation, the secondary jacking frame 2 can be moved toward the inside of the tunnel by moving the electric cylinder 53. The movement of the secondary jacking frame 2 drives the jacking bracket 3 to move together. When it moves to the maximum distance, the secondary jacking frame 2 is moved by the secondary jacking frame 3. The internal cylinder of the jacking bracket 3 on the lifting frame 2 is extended, so that the lower end of the jacking bracket 3 contacts the ground and is jacked up, and the support can be completed. At the same time, when it is necessary to move again, the internal cylinder of the jacking bracket 3 corresponding to the main jacking frame 1 can be retracted, and then the electric cylinder 53 can be retracted to make the main jacking frame 1 move forward toward the position of the secondary jacking frame 2. After the movement is completed, the internal cylinder of the jacking bracket 3 corresponding to the main jacking frame 1 can be extended to jack up the main jacking frame 1. The removal function is achieved by extending and retracting the electric cylinder 53, and at the same time, the secondary jacking frame 2 and the main jacking frame 1 are lifted respectively by the jacking bracket 3;

[0043] Through the effect of the reinforcing structure 6, when the secondary lifting frame 2 and the main lifting frame 1 are dislocated and separated to the maximum distance, the telescopic cylinder 61 can be contracted to make the U-shaped frame 62 and the jacking frame 63 move upward, and the top of the tunnel can be further supported by the jacking frame 63, so that the supporting effect of the secondary lifting frame 2 can be further strengthened when the secondary lifting frame 2 is dislocated and separated from the main lifting frame 1. Since one end of the secondary lifting frame 2 corresponds to the innermost position of the tunnel, the support safety inside the tunnel can be effectively enhanced by reinforcement.

[0044] It should be noted that before the cylinder inside the jacking bracket 3 is extended to lift the secondary jacking frame 2 or the main jacking frame 1, the electric cylinder 41 can be extended by adjusting the output end of the electric cylinder 41 to extend downward, so that the No. 2 connecting block 49 moves downward, and the connecting bracket 40 is driven to move downward by the No. 2 connecting block 49, and the No. 1 connecting block 48 is pushed to slide toward the outside of the bottom plate 42 by the connecting bracket 40, and the maximum distance that the sliding block 46 can slide outward is limited by the limiting function of the protruding block 47. When the sliding block 46 slides to the maximum distance, the sliding block 46 cooperates with the bottom plate 42 to support and push the jacking bracket 3, so that the extension or contraction distance of the electric cylinder 41 can be freely adjusted according to the actual situation in the mining tunnel, so that the sliding block 46 can slide freely toward the outside of the bottom plate 42 or contract inward, thereby playing a role in providing different support for the jacking bracket 3, which can meet the use of mining tunnels under various conditions and has higher support stability.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mine-used full-rock tunnel boring machine tunnel roof support device, comprising a main jacking frame (1), characterized in that: A secondary lifting frame (2) is movably arranged between a plurality of rod bodies of the main lifting frame (1); the lower ends of the secondary lifting frame (2) and the main lifting frame (1) are both supported and connected with a lifting bracket (3); an adjustment structure (4) is arranged on the outer surface of the lifting bracket (3) near the lower end; a removal structure (5) is connected between the secondary lifting frame (2) and the main lifting frame (1); and a reinforcement structure (6) is arranged on the outer surface of the secondary lifting frame (2) near one end; The lifting bracket (3) is a bracket with a retractable movable rod. A lifting cylinder is provided inside the bracket for pushing the lifting bracket (3) to extend and push the secondary lifting frame (2) and the main lifting frame (1) upwards respectively. The interior of the lifting bracket (3) near the lower end is a cavity structure. The adjustment structure (4) includes an adjustment electric cylinder (41) arranged in the cavity inside the lifting bracket (3). The lower end of the lifting bracket (3) is fixedly connected to a bottom plate (42). A connecting hole (43) communicating with the interior of the cavity is provided on the outer surface of the lifting bracket (3) corresponding to the cavity. The bottom plate (42) is provided on the outer surface of the lifting bracket (3). The outer surface of the plate (42) is provided with a slide groove (44), the outer surface of the bottom plate (42) is provided with strip grooves (45) at both sides corresponding to the slide groove (44), a sliding block (46) is arranged inside the slide groove (44), the outer surface of the sliding block (46) is fixedly connected with a protruding block (47), the upper end of the sliding block (46) is fixedly connected with a first connecting block (48), the outer surface of the output end of the regulating electric cylinder (41) is fixedly connected with a second connecting block (49), and a connecting bracket (40) is hingedly connected between the second connecting block (49) and the first connecting block (48).

2. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 1, characterized in that: The removal structure (5) comprises a No. 1 fixing plate (51) fixedly connected to the lower end of the main lifting frame (1), a No. 2 fixing plate (52) fixedly connected to the lower end of the secondary lifting frame (2), the No. 1 fixing plates (51) being provided in two groups and being arranged at intervals, a removal electric cylinder (53) being connected between one group of the No. 1 fixing plates (51) and the No. 2 fixing plates (52), a through rod (54) being fixedly connected between the two groups of the No. 1 fixing plates (51), and a reinforcement kit (55) being fixedly connected to the outer surface of the No. 2 fixing plates (52).

3. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 2, characterized in that: The secondary lifting frame (2) and the main lifting frame (1) are staggered, and the reinforcing structure (6) comprises a telescopic cylinder (61) fixedly connected to the outer surface of the lower end of the secondary lifting frame (2) near one end, the output end of the telescopic cylinder (61) is fixedly connected to a C-shaped frame (62), and the top end of the C-shaped frame (62) is fixedly connected to a jacking frame (63).

4. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 1, characterized in that: The number of jacking brackets (3) corresponding to one set of the secondary jacking frame (2) and the main jacking frame (1) is two, and they are symmetrically distributed. The sliding block (46) and the protruding block (47) are both slidably connected to the bottom plate (42).

5. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 4, characterized in that: The number of the slide grooves (44) is a plurality of groups and is distributed in a ring array. The upper and lower surfaces of the sliding block (46) are flush with the upper and lower surfaces of the bottom plate (42). The number of the second connecting blocks (49) is equal to the number of the sliding blocks (46), and the positions of the two correspond one to one.

6. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 5, characterized in that: The slide groove (44) extends from the inside to the outside of the bottom plate (42), the protruding block (47) slides inside the strip groove (45), and the sliding block (46) moves back and forth on the outer surface of the bottom plate (42) by extending or contracting the adjusting electric cylinder (41).

7. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 2, characterized in that: The end of the removal electric cylinder (53) away from the output is fixedly connected to a group of No. 1 fixing plates (51), and the output end of the removal electric cylinder (53) is fixedly connected to a No. 2 fixing plate (52). The number of the removal electric cylinders (53) is a plurality of groups, and the distances between two adjacent groups of removal electric cylinders (53) are equal.

8. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 7, characterized in that: The penetration rod (54) is a regular quadrangular prism-shaped structure, the number of the reinforcement kits (55) is equal to the number of the penetration rods (54), and the positions of the reinforcement kits (55) correspond one-to-one to the positions of the penetration rods (54).

9. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 8, characterized in that: The through rod (54) passes through the reinforcement kit (55), and the reinforcement kit (55) and the through rod (54) are slidably connected, and the secondary lifting frame (2) and the main lifting frame (1) are moved away from or closer to each other through the jacking and contraction of the removal electric cylinder (53).

10. The mine-used full-rock tunnel boring machine roadway roof support device according to claim 3, characterized in that: The telescopic cylinder (61) is fixed to the secondary jacking frame (2) by bolts. The U-shaped frame (62) is a "U"-shaped bracket structure. One set of U-shaped frames (62) corresponds to two sets of jacking frames (63). The length direction of the jacking frames (63) is parallel to the length direction of the secondary jacking frame (2) and the main jacking frame (1).

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