A device for shotcrete construction of a cavern lining support

Abstract

The application relates to a kind of hole chamber lining support shotcrete construction devices, belong to shotcrete technical field.The construction vehicle body and two groups of adjustable telescopic link are included, the construction vehicle body includes frame, the upper end rear side of frame is connected with concrete preparation group, and two groups of material conveying pipes are connected with concrete preparation group.In the application, the mode of installing support to fix nozzle is used to replace handheld, two groups of nozzles are indirectly driven to move along the axis of direction of hole chamber by driving element two, so that axis injection operation is completed, and the labor intensity of construction personnel is greatly reduced.Through the setting of two groups of nozzles, the shotcrete operation can be carried out on the two side walls of the hole chamber at the same time, the shotcrete operation time is reduced, and the construction efficiency is effectively improved.Through the cooperation of telescopic vertical rod and fixed-distance assembly, the spraying distance of nozzle and hole chamber wall can be effectively controlled, so that it can always maintain a better spraying distance with the spraying surface, and the spraying effect of concrete is more uniform and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of shotcrete, in particular to a cavern lining support shotcrete construction device. Background Art

[0002] Cavern lining support refers to the structural support measures used in underground projects such as tunnels and roadways to maintain the stability of the surrounding rock and prevent collapse. Typically constructed with materials such as concrete and steel, cavern lining support construction involves spraying concrete onto the excavated cavern walls. This high-speed spray of concrete rapidly covers the rock surface, forming a dense, high-strength support layer that effectively improves the surrounding rock's overall bearing capacity, structural stability, and anti-seepage properties.

[0003] At present, shotcrete construction mainly adopts dry spraying or wet spraying technology, relying on compressed air to spray the concrete mixture at high speed onto the working surface so that it is tightly combined with the rock layer.

[0004] However, existing shotcrete operations typically rely on workers using handheld spray nozzles. This handheld operation hinders effective control of the spray distance between the nozzle and the cavern wall, resulting in poor concrete spraying results and uneven spraying layers. Furthermore, handheld operation is labor-intensive and results in relatively low construction efficiency. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a cavern lining support shotcrete construction device. The technical solution of the present invention is as follows:

[0006] A device for spraying concrete for supporting cavern linings comprises a construction vehicle body and two sets of adjustable telescopic rods, the construction vehicle body comprising a vehicle frame, the upper rear end of the vehicle frame being connected to a concrete preparation group, the concrete preparation group being connected to two sets of material delivery pipes, each of the two sets of material delivery pipes being connected to a spray head, the upper front end of the vehicle frame being fixedly connected to a guide frame via two sets of bases, the guide frame extending to the front of the vehicle frame, the left and right sides of the front end of the lower surface of the guide frame being connected to adjustable telescopic legs, and the upper end of the guide frame being connected to a moving assembly;

[0007] The moving assembly includes a moving plate, which is slidably mounted on the upper end of the guide frame, a second driving member is connected to the lower end of the moving plate, and support seats are fixedly connected to the left and right sides of the front end of the upper surface of the moving plate;

[0008] The adjustable telescopic rod includes a rotating seat and a telescopic vertical rod. The two groups of rotating seats are respectively rotatably connected to the rear sides of the two groups of support seats. The telescopic vertical rod is connected to the upper end of the rotating seat. The upper end of the movable plate is connected to a driving member 3 for driving the two groups of rotating seats to rotate synchronously in opposite directions.

[0009] The upper end of the telescopic vertical rod is connected to a fixed rod, and the outer side of the fixed rod is connected to a mounting bracket. The mounting bracket includes an adjustment bracket, which is slidably arranged on the outer side of the fixed rod and fixed by bolts. The front end of the adjustment bracket is fixedly connected to a fixing bracket for mounting a nozzle, and the upper end of the fixed rod is connected to a distance component.

[0010] Optionally, the adjustable telescopic leg includes a main leg that is hollow inside and open at the lower end, and an auxiliary leg that is hollow inside and open at the upper end. The auxiliary leg is slidably connected to the inner lower end of the main leg. The inner part of the main leg is connected to a driving member for driving the auxiliary leg to rise or fall relative to the main leg. The lower end of the auxiliary leg is connected to an elastic limiting member, and the lower end of the elastic limiting member is connected to a moving wheel.

[0011] Optionally, the driving member 1 includes a threaded long rod and a rotating rod, the top end of the threaded long rod rotates and passes through the upper end of the main support leg, the lower end of the threaded long rod is threadedly sleeved inside the auxiliary support leg, the upper end of the main support leg is fixedly connected to a mounting seat with an inner hollow and an open lower end, the upper end of the threaded long rod and the internal fixed sleeve located on the mounting seat are provided with a bevel gear 1, the rotating rod rotates and passes through the side wall of the mounting seat, the end of the rotating rod located inside the mounting seat is fixedly sleeved with a bevel gear 2, the bevel gear 1 is meshed with the bevel gear 2, and the end of the rotating rod located outside the mounting seat is fixedly connected to a crank;

[0012] The cam is secured to the bottom of the support leg and is secured to the bottom of the support leg by a spring which is secured on one side of the support leg and is located adjacent to the cam. The cam is fixedly connected to the movable plate, and the limit pin is fixedly connected to the side of the movable plate near the movable hole, and the limit pin is slidably connected to the inside of the movable hole, and the movable plate is fixedly connected to two sets of springs on the side away from the limit pin, and one end of the two sets of springs away from the movable plate abuts on the inner side wall of the fixed shell, and a through hole is provided at the center position of the side of the fixed shell away from the movable hole, and the middle position of the side of the movable plate away from the limit pin is fixedly connected to a pin rod, and the pin rod is movably connected to the inside of the through hole, and one end of the pin rod away from the movable plate is fixedly connected to a pull ring, and a limiting hole is provided on the outer wall of the hollow inner cylinder, wherein, when the upper end of the hollow inner cylinder is in contact with the inner top wall of the hollow outer cylinder, the limiting pin elastically abuts against the limiting hole.

[0013] Optionally, the second driving member includes a fixed seat with an inner hollow and an open lower end, a screw rod and a motor 1, the fixed seat is fixedly connected to the middle position of the upper end of the guide frame, the front end of the screw rod is rotatably connected to the inner front end of the fixed seat, the rear end of the screw rod is fixedly connected to the output shaft of the motor 1, and the motor 1 is fixedly connected to the inner rear end of the fixed seat, the outer thread sleeve of the screw rod is provided with two groups of nut seats, and the lower ends of the two groups of nut seats are fixedly connected to a cross bar, and the left and right ends of the cross bar are symmetrically fixed with L-shaped rods, and the lateral side ends of the L-shaped rods are connected to a pulley group by bolts, and the left and right sides of the lower surface of the guide frame are fixedly connected to slide rails matching the pulley group, and the upper end of the cross bar is fixedly connected to the lower surface of the movable plate through multiple groups of support columns.

[0014] Optionally, the telescopic pole includes a main pole with openings at both ends and a hollow interior and a secondary pole with openings at both ends and a hollow interior, the lower end of the main pole is detachably connected to the base, the secondary pole is slidably connected to the inner upper end of the main pole, the upper end of the secondary pole is threadedly connected to a connecting seat, a telescopic rod is installed inside the main pole, the lower end of the telescopic rod is fixedly connected to the base by a bolt, and the upper end of the telescopic rod is fixedly connected to the connecting seat by a bolt.

[0015] The driving member is a chain which has a first end fixedly mounted on the driving member and a second end of the driving member being mounted on the transmission gear of the second gear.

[0016] Optionally, the rear side of the fixing rod is fixedly connected with a vertical limiting protrusion, and the adjusting frame includes two groups of movable buckles distributed up and down, the two groups of movable buckles are slidably connected to the outer side of the fixing rod, and the movable buckles and the limiting protrusions are fixed by bolts, the front ends of the two groups of movable buckles are fixedly connected to the support plate, and the front ends of the two groups of support plates are jointly fixed with a vertical plate, and the fixing frame includes a rotating plate and two groups of fixing fasteners for fixing the nozzles, the two groups of fixing fasteners are fixedly connected to the front side of the rotating plate, and the middle position of the rear side of the rotating plate is fixedly connected with a rotating shaft, and the rear end of the rotating shaft rotates through the vertical plate and is connected to a driving member four for driving the rotating plate to swing back and forth left and right.

[0017] Optionally, the driving member four includes a protective shell two, a gear three and a rack. The protective shell two is fixedly connected to the rear side of the vertical plate, the rotating shaft rotates through the protective shell two and extends to the interior of the protective shell two, the gear three is fixedly sleeved on the rear end of the rotating shaft, the rack is engaged with the lower end of the gear three, the inner bottom of the protective shell two is fixedly connected to a guide rail, the rack is slidably connected to the top of the guide rail, and a reciprocating push rod is also fixedly connected to the interior of the protective shell two, and the telescopic end of the reciprocating push rod is fixedly connected to one end of the rack.

[0018] Optionally, the fixed rod is open at both ends and hollow inside, the lower end of the fixed rod is threadedly connected to the connecting seat 2, the connecting seat 2 and the connecting seat 1 are fixed by bolts, the distance assembly includes a movable rod with open ends and hollow inside, an elastic positioning piece and a contact seat, the movable rod is slidably connected to the inner upper end of the fixed rod, the upper end of the movable rod is threadedly sleeved with a connecting seat 3, the interior of the movable rod is connected to the telescopic rod 2, the upper end of the telescopic rod 2 is fixedly connected to the connecting seat 3 by a bolt, and the lower end of the telescopic rod 2 is fixedly connected to the connecting seat 2 by a bolt, and the elastic positioning piece includes a fixed cylinder seat, a movable cylinder seat and a spring 3. The fixed cylinder seat is fixedly connected to the upper end of the connecting seat three, the movable cylinder seat is slidably connected to the inner upper end of the fixed cylinder seat, the lower end of the spring three is fixedly connected to the fixed cylinder seat, the upper end of the spring three is fixedly connected to the movable cylinder seat, the interior of the fixed cylinder seat and the inner side of the spring three are fixedly connected with a mounting cylinder, the interior of the mounting cylinder is fixedly connected with a contact sensor, the interior of the movable cylinder seat is fixedly connected with an abutment rod for triggering the contact sensor, the contact seat is fixedly connected to the upper end of the movable cylinder seat, wherein, after the contact sensor receives the contact signal, the telescopic rod 1 is controlled to stop operating through the control terminal.

[0019] Optionally, a receiving plate for fixing a partial section of the material delivery pipe is fixedly connected to one side of the telescopic upright, and a U-shaped buckle is fixedly connected to the front end of one side of the receiving plate. The U-shaped buckle is fixedly connected to the main upright through a bolt, and a U-shaped groove is provided through the front end of the receiving plate. A plurality of fixing rings for constraining the position of the material delivery pipe are symmetrically fixed on the left and right sides of the receiving plate. Pipe buckles for fixing the local position of the material delivery pipe are installed on the left and right sides of the front end of the upper surface of the frame, and the material delivery pipe is laid in sequence along the pipe buckle, the rear end of the receiving plate and the U-shaped groove.

[0020] All the above optional technical solutions can be combined arbitrarily, and the present invention does not provide detailed descriptions of the structures after each combination.

[0021] By means of the above solution, the beneficial effects of the present invention are as follows:

[0022] 1. In this invention, a bracket-mounted nozzle is used instead of a handheld method. A second drive element indirectly drives two sets of nozzles to move synchronously along the axis of the tunnel's travel direction, thereby completing the axis-wise spraying operation, significantly reducing the labor intensity of construction workers. Furthermore, by providing two sets of nozzles, concrete can be sprayed simultaneously on both sides of the tunnel, reducing spraying operation time and effectively improving construction efficiency.

[0023] 2. The coordination of the telescopic pole and the distance component effectively controls the spray distance between the nozzle and the cavern wall. During concrete spraying, construction workers adjust the overall length of the telescopic pole, thereby raising or lowering the fixed frame and nozzle outside the fixed pole, ensuring that the optimal spray distance from the spraying surface is always maintained, ensuring a more uniform and efficient concrete spraying effect.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall appearance structure of the present invention (1);

[0026] Figure 2 for Figure 1 Right view;

[0027] Figure 3 This is a schematic diagram of the overall appearance structure of the present invention (II);

[0028] Figure 4 This is a schematic diagram of the overall appearance structure of the present invention (3);

[0029] Figure 5 This is a front view of the construction vehicle body in the construction state of the present invention;

[0030] Figure 6 It is a schematic diagram of the decomposition structure of the present invention;

[0031] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at A in the middle;

[0032] Figure 8 Schematic diagram of the exploded structure of the movable plate, the second driving member and the guide frame in the present invention;

[0033] Figure 9 It is a right side cross-sectional view of the adjustable telescopic support leg of the present invention;

[0034] Figure 10 Schematic diagram of the decomposed structure of the elastic limiter in the present invention;

[0035] Figure 11 for Figure 10 Schematic diagram of the enlarged structure at B in the middle;

[0036] Figure 12 It is a schematic structural diagram of the movable plate, adjustable telescopic rod, fixed rod, mounting bracket, distance component and receiving plate in the present invention;

[0037] Figure 13 This is a schematic diagram of the structure of the three-phase cooperation among the support base, the rotating base and the driving member in the present invention;

[0038] Figure 14 It is a top cross-sectional view of the three-phase cooperation of the support seat, the rotating seat and the driving member in the present invention;

[0039] Figure 15 It is a right side cross-sectional view of the adjustable telescopic rod, fixed rod, mounting bracket and distance assembly in the present invention;

[0040] Figure 16 for Figure 15 Schematic diagram of the enlarged structure at C in the middle;

[0041] Figure 17 Schematic diagram of the exploded structure of the adjustable telescopic rod, fixed rod and distance assembly in the present invention;

[0042] Figure 18 Schematic diagram of the exploded structure of the fixing rod and the mounting bracket in the present invention;

[0043] Figure 19 This is a schematic diagram of the exploded structure of the mounting bracket in the present invention;

[0044] Figure 20 Schematic diagram of the exploded structure of the elastic positioning member and the contact seat in the present invention;

[0045] Figure 21 It is a structural schematic diagram of the receiving plate in the present invention.

[0046] Numbers in the figure: 1. Construction vehicle body; 11. Vehicle frame; 12. Mobile crawler; 13. Concrete preparation group; 14. Feed pipe; 15. Sprinkler; 16. Base; 17. Pipe buckle; 2. Hydraulic support leg; 21. Ear seat; 22. Hydraulic cylinder; 23. Foot plate; 3. Guide frame; 31. Slide rail; 4. Adjustable telescopic support leg; 41. Main support leg; 42. Auxiliary support leg; 43. Driving part 1; 431. Threaded long rod; 432. Bevel gear 1; 433. Rotating rod; 434. Bevel gear 2; 435. Crank; 44. Elastic limiter; 441. Hollow outer cylinder; 442. Limiting ring; 4421. Movable hole; 443. Hollow inner cylinder; 4431, limiting hole; 444, matching ring; 445, spring 1; 446, limiting member; 4461, fixed shell; 44611, through hole; 4462, movable plate; 4463, limiting pin; 4464, spring 2; 4465, pin rod; 4466, pull ring; 45, moving wheel; 46, mounting seat; 5, moving assembly; 51, moving plate; 52, driving member 2; 521, fixed seat; 522, screw rod; 523, motor 1; 524, nut seat; 525, crossbar; 526, L-shaped rod; 527, pulley assembly; 528, support column; 53, support seat; 531, rotating rod; 6, adjustable telescopic rod; 61 , rotating seat; 62, telescopic pole; 621, main pole; 6211, base; 622, auxiliary pole; 6221, connecting seat 1; 623, telescopic rod 1; 63, driving part 3; 631, protective shell 1; 632, sprocket 1; 633, motor 2; 634, gear 1; 635, gear 2; 636, support shaft; 6361, support frame; 637, sprocket 2; 638, synchronous chain; 639, shell cover; 7, fixing rod; 71, connecting seat 2; 72, limiting protrusion; 721, fixing hole; 8, mounting bracket; 81, adjustment frame; 811, movable buckle; 812, support plate; 813, vertical plate; 82, fixed Frame; 821, rotating plate; 822, fixing fastener; 823, rotating shaft; 83, driving member four; 831, protective shell two; 832, gear three; 833, rack; 834, guide rail; 835, reciprocating push rod; 9, fixed distance assembly; 91, movable rod; 911, connecting seat three; 92, telescopic rod two; 93, elastic positioning member; 931, fixed cylinder seat; 9311, limiting step; 9312, mounting cylinder; 932, movable cylinder seat; 9321, abutting rod; 933, spring three; 934, contact sensor; 94, contact seat; 10, receiving plate; 101, U-shaped buckle; 102, U-shaped groove; 103, fixing ring. DETAILED DESCRIPTION

[0047] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0048] See also Figure 1-21 The present invention provides a cavern lining support shotcrete construction device, comprising a construction vehicle body 1 and two sets of adjustable telescopic rods 6. The construction vehicle body 1 comprises a vehicle frame 11, a mobile crawler 12 is installed at the lower end of the vehicle frame 11, a concrete preparation group 13 is connected to the rear side of the upper end of the vehicle frame 11, and the concrete preparation group 13 is connected to two sets of material delivery pipes 14, each of the two sets of material delivery pipes 14 is connected to a nozzle 15, and multiple sets of hydraulic support legs 2 are installed on both sides of the vehicle frame 11. It includes an ear seat 21, a hydraulic cylinder 22 and a foot plate 23. The ear seat 21 is fixedly connected to one side of the frame 11, the hydraulic cylinder 22 is fixedly connected to the lower end of the ear seat 21, and the foot plate 23 is fixedly connected to the lower end of the hydraulic cylinder 22. The front side of the upper end of the frame 11 is fixedly connected to the guide frame 3 through two groups of bases 16. The guide frame 3 extends to the front of the frame 11. Adjustable telescopic legs 4 are connected to the left and right sides of the front end of the lower surface of the guide frame 3. The upper end of the guide frame 3 is connected to the moving component 5;

[0049] The moving assembly 5 includes a moving plate 51, which is slidably mounted on the upper end of the guide frame 3. The lower end of the moving plate 51 is connected to a second driving member 52 for driving the moving plate 51 to slide along the guide frame 3. Support seats 53 are fixedly connected to the left and right sides of the front end of the upper surface of the moving plate 51.

[0050] The adjustable telescopic rod 6 includes a rotating base 61 and a telescopic vertical rod 62. The two sets of rotating bases 61 are rotatably connected to the rear sides of the two sets of support bases 53 respectively. The telescopic vertical rod 62 is connected to the upper end of the rotating base 61. The upper end of the movable plate 51 is connected to a driving member 63 for driving the two sets of rotating bases 61 to rotate synchronously in opposite directions.

[0051] The upper end of the telescopic vertical rod 62 is connected to the fixed rod 7, and the outer side of the fixed rod 7 is connected to the mounting bracket 8. The mounting bracket 8 includes an adjusting frame 81. The adjusting frame 81 is slidably arranged on the outer side of the fixed rod 7 and the two are fixed by bolts. The front end of the adjusting frame 81 is fixedly connected to a fixing frame 82 for mounting the nozzle 15. The upper end of the fixed rod 7 is connected to a distance component 9.

[0052] Specifically, the construction vehicle 1 travels within the cavern on its mobile tracks 12. Upon reaching the working position, the multiple sets of hydraulic outriggers 2 are controlled to extend, allowing the footplates 23 to firmly contact the ground. This ensures that the construction vehicle 1 maintains good stability during the spraying operation. Construction personnel can then adjust the actual support height of the two sets of adjustable telescopic outriggers 4 based on the actual conditions of the cavern floor to account for any uneven surfaces. This ensures that the two sets of adjustable telescopic outriggers 4 can provide effective support to the front end of the guide frame 3 during the concrete spraying operation.

[0053] Specifically, during the concrete spraying operation, the two sets of rotating seats 61 are first driven synchronously in opposite directions by the third driver 63, so that the two sets of nozzles 15 are at the same spraying height. Next, the relative position of the fixed frame 82 on the outside of the fixed rod 7 is adjusted to determine the preset spraying distance between the nozzle 15 and the spraying surface. Then, with the cooperation of the distance component 9, the overall length of the telescopic vertical rod 62 is adjusted to move the nozzle 15 to a spraying position that maintains a certain spraying distance from the cavern wall. After the adjustment is completed, the movable plate 51 is driven to slide along the guide frame 3 by the second driver 52, thereby indirectly driving the two sets of nozzles 15 to move synchronously along the axis of the cavern's travel direction. During this process, the nozzles 15 continue to spray concrete onto the cavern wall. When the movable plate 51 moves from the rear end of the guide frame 3 to the front end, a horizontal concrete strip will form on the cavern wall. Subsequently, the two sets of rotating seats 61 are driven synchronously in opposite directions by the third driver 63, thereby raising the two sets of nozzles 15 to another spraying height, thereby preparing for the next stage of the spraying operation. Then, the distance between the nozzles 15 and the cavity wall is adjusted again, and the two groups of nozzles 15 are indirectly driven to move along the axis in the opposite direction of the cavity's travel direction by the second driving member 52, thus completing the spraying operation of two horizontal concrete strips. The above movement and spraying steps are repeated until the entire cavity contour is covered.

[0054] It should be noted that the concrete preparation unit 13 includes a mixing tank, a feed hopper, an air compressor, a feed pump, and a control terminal. These components work together to prepare concrete and deliver it to the nozzle 15 through the feed pipe 14 for spraying. The specific structure and operating principles involved here all adopt conventional techniques in the art.

[0055] Furthermore, the adjustable telescopic leg 4 includes a main leg 41 which is hollow inside and open at the lower end, and an auxiliary leg 42 which is hollow inside and open at the upper end. The auxiliary leg 42 is slidably connected to the lower end of the main leg 41. The main leg 41 is internally connected to a driving member 43 for driving the auxiliary leg 42 to rise or fall relative to the main leg 41. The lower end of the auxiliary leg 42 is connected to an elastic limiting member 44, and the lower end of the elastic limiting member 44 is connected to a moving wheel 45.

[0056] Specifically, the length of the auxiliary leg 42 extending or retracting the main leg 41 is adjusted via a driver 43 based on the actual conditions of the cavern floor. During the adjustment process, construction personnel can determine whether the adjustable telescopic leg 4 has reached its proper height by observing the position of the elastic limiter 44. By providing the movable wheels 45, as long as the cavern floor is flat, the adjustable telescopic leg 4 does not need to be retracted when the construction vehicle 1 is moving; the movable wheels 45 can be directly driven to move along with the construction vehicle 1.

[0057] Furthermore, the driving member 1 43 includes a threaded long rod 431 and a rotating rod 433. The top end of the threaded long rod 431 rotates and passes through the upper end of the main support leg 41. The lower end of the threaded long rod 431 is threadedly sleeved inside the auxiliary support leg 42. The upper end of the main support leg 41 is fixedly connected to a mounting seat 46 which is hollow and open at the lower end. The upper end of the threaded long rod 431 and the interior of the mounting seat 46 are fixedly sleeved with a bevel gear 1 432. The rotating rod 433 rotates and passes through the side wall of the mounting seat 46. The end of the rotating rod 433 located inside the mounting seat 46 is fixedly sleeved with a bevel gear 2 434. The bevel gear 1 432 and the bevel gear 2 434 are meshed. The end of the rotating rod 433 located outside the mounting seat 46 is fixedly connected to a crank 435.

[0058] The elastic limiting member 44 includes a hollow outer cylinder 441 with an opening at the lower end and a hollow inner cylinder 443 with an opening at the upper end. The hollow outer cylinder 441 is fixedly connected to the lower end of the auxiliary support leg 42. The lower end of the hollow outer cylinder 441 is connected to a limiting ring 442 by a bolt. The inner diameter of the limiting ring 442 is smaller than the inner diameter of the hollow outer cylinder 441. The hollow inner cylinder 443 is slidably connected to the inside of the limiting ring 442. The outer side of the upper end of the hollow inner cylinder 443 is fixedly sleeved with a matching ring 444. The matching ring 444 is slidably connected to the hollow outer cylinder 44 1, the interior of the hollow inner cylinder 443 is fixedly connected to a spring 445, the upper end of the spring 445 abuts against the inner top wall of the hollow outer cylinder 441, one side of the limiting ring 442 is connected to a limiting member 446, the limiting member 446 includes a fixed shell 4461 and a limiting pin 4463, one side of the limiting ring 442 is penetrated by a movable hole 4421, the fixed shell 4461 is fixedly connected to the outside of the limiting ring 442 and is located on one side of the movable hole 4421, and the internal sliding connection of the fixed shell 4461 There is a movable plate 4462, a limit pin 4463 is fixedly connected to the side of the movable plate 4462 close to the movable hole 4421, the limit pin 4463 is slidably connected to the inside of the movable hole 4421, and the side of the movable plate 4462 away from the limit pin 4463 is fixedly connected to two sets of springs 4464, and the ends of the two sets of springs 4464 away from the movable plate 4462 are both against the inner side wall of the fixed shell 4461, and a through hole is opened at the center of the side of the fixed shell 4461 away from the movable hole 4421. Hole 44611, a pin rod 4465 is fixedly connected to the middle position of the side of the movable plate 4462 away from the limiting pin 4463, the pin rod 4465 is movably connected to the inside of the through hole 44611, and a pull ring 4466 is fixedly connected to the end of the pin rod 4465 away from the movable plate 4462, and a limiting hole 4431 is provided on the outer wall of the hollow inner cylinder 443, wherein, when the upper end of the hollow inner cylinder 443 is in contact with the inner top wall of the hollow outer cylinder 441, the limiting pin 4463 elastically abuts against the limiting hole 4431.

[0059] Specifically, by turning the crank 435, the crank 435 drives bevel gear 2 434 via the rotating rod 433, which in turn drives bevel gear 1 432. Bevel gear 1 432 in turn drives the threaded rod 431. Because the lower end of the threaded rod 431 is threadedly connected to the auxiliary leg 42, when the threaded rod 431 rotates, the auxiliary leg 42 descends relative to the main leg 41. As the auxiliary leg 42 descends, the moving wheel 45 gradually contacts the ground. Once the moving wheel 45 contacts the ground, as the auxiliary leg 42 continues to descend, the hollow outer cylinder 441 moves downward relative to the hollow inner cylinder 443, gradually compressing the spring 1 445. When the upper end of the hollow inner cylinder 443 abuts the inner top wall of the hollow outer cylinder 441, the stop pin 4463, under the action of the spring 2 4464, elastically abuts the stop hole 4431. At the same time, movable plate 4462 drives pin 4465 to slide toward through-hole 44611. When the operator observes pin 4465 retracted into through-hole 44611, the adjustable telescopic leg 4 has reached its desired height. To adjust the height again, the operator pulls ring 4466 outward. This indirectly drives stop pin 4463 out of stop hole 4431 via pin 4465, and spring 1 445 repositions hollow inner cylinder 443, providing support for further adjustment.

[0060] In addition, the relative sliding distance between the hollow inner cylinder 443 and the hollow outer cylinder 441 can be effectively controlled by the cooperation between the limiting ring 442 and the matching ring 444 .

[0061] Furthermore, the second driving member 52 includes a fixed seat 521 with an inner hollow and an open lower end, a screw rod 522 and a motor 1 523. The fixed seat 521 is fixedly connected to the middle position of the upper end of the guide frame 3, and the front end of the screw rod 522 is rotatably connected to the internal front end of the fixed seat 521. The rear end of the screw rod 522 is fixedly connected to the output shaft of the motor 1 523, and the motor 1 523 is fixedly connected to the internal rear end of the fixed seat 521. The outer thread of the screw rod 522 is provided with two groups of nut seats 524. The lower ends of the two groups of nut seats 524 are fixedly connected to the cross bar 525. The left and right ends of the cross bar 525 are symmetrically fixed with L-shaped rods 526. The lateral ends of the L-shaped rods 526 are connected to the pulley group 527 by bolts. The left and right sides of the lower surface of the guide frame 3 are fixedly connected to the slide rails 31 that cooperate with the pulley group 527. The upper end of the cross bar 525 is fixedly connected to the lower surface of the movable plate 51 through multiple groups of support columns 528.

[0062] Specifically, when the movable plate 51 needs to be driven to slide along the guide frame 3, the motor 1 523 can be used to control the rotation of the screw 522. At this time, the two sets of nut seats 524 move along the direction of the screw 522. The two sets of nut seats 524 then drive the pulley group 527 to slide inside the slide rail 31 on the corresponding side through the cross bar 525 and the L-shaped rod 526. The mutual cooperation between the pulley group 527 and the slide rail 31 can indirectly provide auxiliary support for the movable plate 51, and the slide rail 31 acts as a limiter and guide for the pulley group 527, ensuring that the movable plate 51 moves along the predetermined path. In addition, the slide rail 31 is installed on the lower surface of the guide frame 3 to prevent rebounding concrete from entering the slide rail 31 during the concrete spraying operation.

[0063] Furthermore, the telescopic vertical rod 62 includes a main vertical rod 621 with openings at both ends and a hollow interior, and a secondary vertical rod 622 with openings at both ends and a hollow interior. The lower end of the main vertical rod 621 is detachably connected to the base 6211, and the secondary vertical rod 622 is slidably connected to the upper end of the interior of the main vertical rod 621. The upper end of the secondary vertical rod 622 is threadedly connected to a connecting seat 6221. A telescopic rod 623 is installed inside the main vertical rod 621. The lower end of the telescopic rod 623 is fixedly connected to the base 6211 by bolts, and the upper end of the telescopic rod 623 is fixedly connected to the connecting seat 6221 by bolts.

[0064] Specifically, the extension of the secondary upright 622 from the primary upright 621 is indirectly varied by controlling the telescopic end of telescopic rod 1 623. Telescopic rod 1 623 can be powered by a push rod. Furthermore, bolts can be used to connect the base 6211 to the primary upright 621, while the connection between base 1 6221 and secondary upright 622 utilizes a threaded, detachable structure, facilitating subsequent installation and removal of telescopic rod 1 623.

[0065] Furthermore, the two groups of rotating seats 61 are respectively fixedly connected to the lower ends of the two groups of main vertical rods 621, and the interiors of the two groups of rotating seats 61 are fixedly connected with rotating rods 531. The two groups of rotating rods 531 are respectively rotatably connected to the support seats 53 at corresponding positions. The driving member three 63 includes a sprocket one 632, a motor two 633 and a gear one 634. The upper end of the movable plate 51 is fixedly connected to a protective shell one 631 through a bracket. The rear ends of the two groups of rotating rods 531 rotate through the protective shell one 631. The sprocket one 632 is fixedly sleeved on the rear end of one group of rotating rods 531. The output shaft of the motor two 633 is fixedly connected to one group of rotating rods 531. The motor two 633 is fixedly connected to the movable plate 51 through the bracket. On the other hand, gear 1 634 is fixedly sleeved on the rear end of another set of rotating rods 531, and gear 2 635 is meshed with one side of gear 1 634. A support shaft 636 is fixedly connected to the inside of gear 2 635. Sprocket 2 637 is fixedly sleeved on the outside of the support shaft 636 and located behind gear 2 635. Sprocket 2 637 is connected to sprocket 1 632 through a synchronous chain 638. A support frame 6361 is also fixedly connected to the inside of protective shell 1 631, and the support frame 6361 is rotatably connected to the support shaft 636. The rear side of protective shell 1 631 is fixedly connected to a shell cover 639 by bolts. The output shaft of motor 2 633 rotates through the shell cover 639 and extends to the inside of protective shell 1 631.

[0066] Specifically, when the actual heights of the two groups of nozzles 15 need to be adjusted, the second motor 633 is controlled to operate, and the output shaft of the second motor 633 drives one of the groups of rotating rods 531 to rotate, thereby driving the sprocket 1 632 and the rotating base 61 connected to the group of rotating rods 531 to rotate synchronously. At the same time, the sprocket 1 632 drives the second sprocket 637 to rotate in the same direction via the synchronization chain 638. The sprocket 2 637 in turn drives the second gear 635 to rotate in the same direction via the support shaft 636. The second gear 635 in turn drives the first gear 634 to rotate in the opposite direction, thereby driving the other group of rotating rods 531 and the rotating base 61 connected to the group of rotating rods 531 to rotate in the opposite direction. In this way, the two groups of rotating bases 61 are synchronously rotated in opposite directions, so that the two groups of nozzles 15 can be adjusted to the same height under synchronous control.

[0067] Furthermore, a vertical limiting protrusion 72 is fixedly connected to the rear side of the fixing rod 7, and the adjustment frame 81 includes two groups of movable buckles 811 distributed up and down. The two groups of movable buckles 811 are slidably connected to the outer side of the fixing rod 7, and the movable buckles 811 are fixed to the limiting protrusion 72 by bolts. A plurality of fixing holes 721 are vertically equidistantly provided on the rear side of the limiting protrusion 72. The front ends of the two groups of movable buckles 811 are fixedly connected to the support plates 812, and the front ends of the two groups of support plates 812 are jointly fixed with the vertical plates 811. 3. The fixing frame 82 includes a rotating plate 821 and two sets of fixing fasteners 822 for fixing the nozzle 15. The fixing fasteners 822 use two sets of semicircular fasteners to engage with each other to fix the feed pipe 14. The two sets of fixing fasteners 822 are fixedly connected to the front side of the rotating plate 821. A rotating shaft 823 is fixedly connected to the middle position of the rear side of the rotating plate 821. The rear end of the rotating shaft 823 rotates through the vertical plate 813 and is connected to a driving member 83 for driving the rotating plate 821 to swing back and forth.

[0068] Specifically, by adjusting the relative positions of the two sets of movable buckles 811 on the outside of the fixed rod 7, the predetermined distance between the nozzle 15 and the chamber wall can be indirectly determined. The movable buckles 811 can then be fixed to the limiting protrusions 72 using bolts. Secondly, the drive member 83 enables the rotating plate 821 to swing back and forth, thereby driving the nozzle 15 to perform a left-right oscillating spraying motion, effectively increasing the single spraying area and improving spraying efficiency.

[0069] Furthermore, the driving member four 83 includes a protective shell two 831, a gear three 832 and a rack 833. The protective shell two 831 is fixedly connected to the rear side of the vertical plate 813. The rotating shaft 823 rotates through the protective shell two 831 and extends to the interior of the protective shell two 831. The gear three 832 is fixedly sleeved on the rear end of the rotating shaft 823. The rack 833 is engaged with the lower end of the gear three 832. The inner bottom of the protective shell two 831 is fixedly connected to the guide rail 834. The rack 833 is slidably connected to the top of the guide rail 834. The interior of the protective shell two 831 is also fixedly connected to a reciprocating push rod 835. The telescopic end of the reciprocating push rod 835 is fixedly connected to one end of the rack 833.

[0070] Specifically, the telescopic end of the reciprocating push rod 835 is controlled to extend and retract reciprocally, and the telescopic end of the reciprocating push rod 835 drives the rack 833 to move back and forth along the guide rail 834, thereby driving the gear three 832 to realize reciprocating rotation in the clockwise and counterclockwise directions. The gear three 832 drives the rotating plate 821 to rotate through the rotating shaft 823, and then drives the fixing fastener 822 and the nozzle 15 to swing back and forth, thereby realizing the precise spraying of the nozzle 15 in the specified area.

[0071] Furthermore, the fixed rod 7 is open at both ends and hollow inside, and the lower end of the fixed rod 7 is threadedly connected to the connecting seat 2 71, and the connecting seat 2 71 is fixed to the connecting seat 1 6221 by bolts. The distance component 9 includes a movable rod 91 with open ends and hollow inside, an elastic positioning member 93 and a contact seat 94, and the movable rod 91 is slidably connected to the inner upper end of the fixed rod 7, and the upper end of the movable rod 91 is threadedly sleeved with a connecting seat 3 911, and the interior of the movable rod 91 is connected to the telescopic rod 2 92, and the upper end of the telescopic rod 2 92 is fixedly connected to the connecting seat 3 911 by bolts, and the lower end of the telescopic rod 2 92 is fixedly connected to the connecting seat 2 71 by bolts, and the elastic positioning member 93 includes a fixed cylinder seat 931, a movable cylinder seat 932 and a spring 3 933, and the fixed cylinder seat 931 is fixedly connected to the connecting seat 3 91 1, the movable cylinder seat 932 is slidably connected to the inner upper end of the fixed cylinder seat 931, the inner side wall of the fixed cylinder seat 931 is fixedly connected to the limited step 9311, the lower end of the spring three 933 is fixedly connected to the fixed cylinder seat 931, the upper end of the spring three 933 is fixedly connected to the movable cylinder seat 932, the interior of the fixed cylinder seat 931 and located on the inner side of the spring three 933 is fixedly connected with a mounting cylinder 9312, the interior of the mounting cylinder 9312 is fixedly installed with a contact sensor 934, the interior of the movable cylinder seat 932 is fixedly connected with an abutment rod 9321 for triggering the contact sensor 934, and the contact seat 94 is fixedly connected to the upper end of the movable cylinder seat 932, wherein, after the contact sensor 934 receives the contact signal, it controls the telescopic rod 1 623 to stop operating through the control terminal.

[0072] Specifically, when adjusting the actual length of the telescopic upright 62 through the coordination of the distance assembly 9, the telescopic end of telescopic rod 1 623 gradually extends, thereby driving the synchronous movement of the fixed rod 7, the movable rod 91, the elastic positioning member 93, and the contact seat 94, thereby driving the movement of the mounting bracket 8 and the nozzle 15 outside the fixed rod 7. When the contact seat 94 contacts the chamber wall, as the telescopic end of telescopic rod 1 623 continues to extend, the fixed cylinder seat 931 slides upward relative to the movable cylinder seat 932. At this time, the spring 3 933 is gradually compressed until the lower end of the movable cylinder seat 932 abuts the limit step 9311 inside the fixed cylinder seat 931. At the same time, the abutment rod 9321 squeezes the contact of the contact sensor 934, causing the contact sensor 934 to receive a contact signal and control the telescopic rod 1 623 to stop operating through the control terminal. In this way, the distance between the nozzle 15 and the chamber wall is adjusted, ensuring that the nozzle 15 always maintains a certain spraying distance from the chamber wall.

[0073] Specifically, the movable rod 91 is retractable. Once the position of the nozzle 15 is adjusted, the telescopic end of the second telescopic rod 92 can be driven to retract, thereby retracting the movable rod 91 into the interior of the fixed rod 7. This design prevents the contact seat 94 from continuously rubbing against the chamber wall when the movable plate 51 drives the nozzle 15 along its axis during spraying. Furthermore, the second telescopic rod 92 can be an electric actuator.

[0074] Furthermore, a receiving plate 10 for fixing a partial section of the material delivery pipe 14 is fixedly connected to one side of the telescopic vertical rod 62, and a U-shaped buckle 101 is fixedly connected to the front end of one side of the receiving plate 10. The U-shaped buckle 101 is fixedly connected to the main vertical rod 621 by bolts, and a U-shaped groove 102 is opened through the front end of the receiving plate 10. Multiple groups of fixing rings 103 for constraining the position of the material delivery pipe 14 are symmetrically fixed on the left and right sides of the receiving plate 10. Pipe buckles 17 for fixing the local position of the material delivery pipe 14 are installed on the left and right sides of the front end of the upper surface of the frame 11. The material delivery pipe 14 is laid in sequence along the pipe buckle 17, the rear end of the receiving plate 10 and the U-shaped groove 102.

[0075] Specifically, by providing the receiving plate 10, the portion of the feed pipe 14 near the nozzle 15 can be fixed. The feed pipe 14 is laid in sequence along the pipe buckle 17, the rear end of the receiving plate 10, and the U-shaped groove 102. When the movable plate 51 is located at the rear side of the guide frame 3, the feed pipe 14 will present a "Z" shape (i.e., the rear end of the receiving plate 10 and the pipe buckle 17 are used to fix the two corners of the "Z"-shaped feed pipe 14, respectively). This ensures that the feed pipe 14 has sufficient redundant length to avoid pulling problems caused by insufficient length during movement. During the sprayed concrete construction process, as the movable plate 51 slides toward the front side of the guide frame 3, it will indirectly drive the receiving plate 10 to move forward, thereby causing the feed pipe 14 to move accordingly. In addition, the feed pipe 14 can be fixed by combining a cable tie with the fixing ring 103.

[0076] Working principle:

[0077] The first step is to move the construction vehicle body 1 into the cavern via the mobile crawler 12, then lower the hydraulic legs 2, and adjust the actual length of the two sets of adjustable telescopic legs 4 to ensure stable support for the front end of the guide frame 3.

[0078] The second step is to adjust the predetermined spraying distance between the nozzle 15 and the cave wall according to the cave spraying requirements. The specific operation is to adjust the relative positions of the two sets of movable buckles 811 on the outside of the fixed rod 7 and fix them with bolts.

[0079] The third step is to indirectly adjust the height of the two groups of nozzles 15 through the driving member 3 63. When the cavern shotcrete is constructed, it should be carried out from the bottom of the cavern side wall to the cavern top wall. Therefore, the height of the nozzle 15 needs to be adjusted to the lowest position.

[0080] Fourth, the telescopic end of telescopic rod 2 92 is extended, thereby pushing movable rod 91 and contact seat 94 above fixed rod 7. At this point, the distance between the top of contact seat 94 and nozzle 15 is the predetermined spray distance. Next, the telescopic end of telescopic rod 1 623 is controlled to extend. This moves auxiliary vertical rod 622 upward relative to main vertical rod 621, thereby moving fixed rod 7, movable rod 91, and contact seat 94 toward the chamber wall. This continues until contact seat 94 contacts the chamber wall, triggering a contact signal from contact sensor 934. At this point, the control terminal synchronously controls telescopic rod 1 623 to stop operating. At this point, the distance between nozzle 15 and the chamber wall is the predetermined spray distance.

[0081] The fifth step is to start the spraying concrete construction operation. First, drive the telescopic end of the telescopic rod 2 92 to retract, thereby lowering the position of the contact seat 94. Then, the driving member 2 52 drives the movable plate 51 to move along the guide frame 3, thereby driving the two groups of nozzles 15 to move synchronously toward the axis of the direction of travel of the cavern. At the same time, the driving member 4 83 can realize the left and right reciprocating swing of the rotating plate 821, thereby driving the nozzle 15 to shake left and right and spray. At the same time, the concrete preparation group 13 continues to prepare concrete, and transports it to the nozzle 15 through the feed pipe 14, and finally the nozzle 15 sprays it on the cavern wall. When the movable plate 51 moves from the rear end to the front end of the guide frame 3, a horizontal concrete strip will be formed on the cavern wall.

[0082] In the sixth step, the two sets of rotating seats 61 are driven synchronously in opposite directions by the third driver 63, thereby raising the two sets of nozzles 15 to a higher spraying height, thereby preparing for spraying at the next spraying surface. Then, the fourth step is repeated. After the adjustment is complete, the two sets of nozzles 15 are indirectly driven by the second driver 52 to move their axes in the direction opposite to the direction of travel of the tunnel, thus completing the spraying operation of two horizontal concrete strips.

[0083] Step 7: Repeat the above steps until the entire cavern outline is completely covered. Then move the construction vehicle 1 toward the cavern to the next spraying position.

[0084] It should be noted that the electrical components mentioned above are all electrically connected to the control terminal, and the circuit structures involved here are all existing technologies and will not be described in detail in this article.

[0085] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cavern lining support shotcrete construction device, characterized by: The invention comprises a construction vehicle body (1) and two sets of adjustable telescopic rods (6), wherein the construction vehicle body (1) comprises a vehicle frame (11), the upper rear side of the vehicle frame (11) is connected to a concrete preparation group (13), the concrete preparation group (13) is connected to two sets of material delivery pipes (14), and the two sets of material delivery pipes (14) are each connected to a nozzle (15), the upper front side of the vehicle frame (11) is fixedly connected to a guide frame (3) through two sets of bases (16), the guide frame (3) extends to the front of the vehicle frame (11), the left and right sides of the front end of the lower surface of the guide frame (3) are connected to adjustable telescopic legs (4), and the upper end of the guide frame (3) is connected to a moving component (5); The moving assembly (5) includes a moving plate (51), the moving plate (51) is slidably mounted on the upper end of the guide frame (3), the lower end of the moving plate (51) is connected to a second driving member (52), and the left and right sides of the front end of the upper surface of the moving plate (51) are fixedly connected to support seats (53); The adjustable telescopic rod (6) includes a rotating seat (61) and a telescopic vertical rod (62), the two groups of rotating seats (61) are respectively rotatably connected to the rear sides of the two groups of support seats (53), the telescopic vertical rod (62) is connected to the upper end of the rotating seat (61), and the upper end of the movable plate (51) is connected to a driving member (63) for driving the two groups of rotating seats (61) to rotate synchronously in opposite directions; The upper end of the telescopic upright rod (62) is connected to a fixed rod (7), the outer side of the fixed rod (7) is connected to a mounting bracket (8), the mounting bracket (8) includes an adjustment bracket (81), the adjustment bracket (81) is slidably arranged on the outer side of the fixed rod (7) and the two are fixed by bolts, the front end of the adjustment bracket (81) is fixedly connected to a fixing bracket (82) for mounting a nozzle (15), and the upper end of the fixed rod (7) is connected to a distance component (9); The adjustable telescopic leg (4) comprises a main leg (41) which is hollow inside and has an open lower end, and a secondary leg (42) which is hollow inside and has an open upper end, wherein the secondary leg (42) is slidably connected to the lower end of the main leg (41), and the main leg (41) is internally connected to a driving member (43) for driving the secondary leg (42) to rise or fall relative to the main leg (41), and the lower end of the secondary leg (42) is connected to an elastic limiting member (44), and the lower end of the elastic limiting member (44) is connected to a moving wheel (45); The driving member 1 (43) includes a threaded long rod (431) and a rotating rod (433), the top end of the threaded long rod (431) rotates through the upper end of the main support leg (41), the lower end of the threaded long rod (431) is threadedly sleeved inside the auxiliary support leg (42), the upper end of the main support leg (41) is fixedly connected to a mounting seat (46) which is hollow inside and open at the lower end, the upper end of the threaded long rod (431) and the internal fixed sleeve of the mounting seat (46) are provided with a bevel gear 1 (432), the rotating rod (433) rotates through the side wall of the mounting seat (46), the end of the rotating rod (433) located inside the mounting seat (46) is fixedly sleeved with a bevel gear 2 (434), the bevel gear 1 (432) and the bevel gear 2 (434) are meshed, and the end of the rotating rod (433) located outside the mounting seat (46) is fixedly connected to a crank (435); The elastic limiting member (44) comprises a hollow outer cylinder (441) with an opening at the lower end and a hollow inner cylinder (443) with an opening at the upper end. The hollow outer cylinder (441) is fixedly connected to the lower end of the auxiliary support leg (42). The lower end of the hollow outer cylinder (441) is connected to a limiting ring (442) by bolts. The hollow inner cylinder (443) is slidably connected to the inside of the limiting ring (442). A matching ring (444) is fixedly sleeved on the outer side of the upper end of the hollow inner cylinder (443). The matching ring (444) is slidably connected to the inside of the hollow outer cylinder (441). The inside of the hollow inner cylinder (443) is fixedly sleeved. A spring (445) is fixedly connected, the upper end of the spring (445) abuts against the inner top wall of the hollow outer cylinder (441), one side of the limiting ring (442) is connected to a limiting member (446), the limiting member (446) includes a fixed shell (4461) and a limiting pin (4463), one side of the limiting ring (442) is penetrated by a movable hole (4421), the fixed shell (4461) is fixedly connected to the outside of the limiting ring (442) and is located on one side of the movable hole (4421), and the interior of the fixed shell (4461) is slidably connected to a movable plate (4462). The limiting pin (4463) is fixedly connected to the side of the movable plate (4462) close to the movable hole (4421), the limiting pin (4463) is slidably connected to the inside of the movable hole (4421), and the side of the movable plate (4462) away from the limiting pin (4463) is fixedly connected with two groups of springs (4464), one end of the two groups of springs (4464) away from the movable plate (4462) is both in contact with the inner wall of the fixed shell (4461), and a through hole (44611) is provided in the center of the side of the fixed shell (4461) away from the movable hole (4421). ), a pin rod (4465) is fixedly connected to the middle position of the side of the movable plate (4462) away from the limiting pin (4463), the pin rod (4465) is movably connected to the inside of the through hole (44611), and a pull ring (4466) is fixedly connected to the end of the pin rod (4465) away from the movable plate (4462), and a limiting hole (4431) is provided on the outer wall of the hollow inner cylinder (443), wherein, when the upper end of the hollow inner cylinder (443) is in contact with the inner top wall of the hollow outer cylinder (441), the limiting pin (4463) elastically abuts against the limiting hole (4431).

2. A cavern lining support shotcrete construction device according to claim 1, characterized in that: The second driving member (52) includes a fixed seat (521) with a hollow interior and an open lower end, a screw rod (522) and a motor (523). The fixed seat (521) is fixedly connected to the middle position of the upper end of the guide frame (3). The front end of the screw rod (522) is rotatably connected to the inner front end of the fixed seat (521). The rear end of the screw rod (522) is fixedly connected to the output shaft of the motor (523). The motor (523) is fixedly connected to the inner rear end of the fixed seat (521). The outer threaded sleeve of the screw rod (522) is provided. There are two groups of nut seats (524), the lower ends of the two groups of nut seats (524) are fixedly connected to a cross bar (525), the left and right ends of the cross bar (525) are symmetrically fixed with L-shaped rods (526), ​​the end of the lateral side of the L-shaped rod (526) is connected to a pulley group (527) by bolts, the left and right sides of the lower surface of the guide frame (3) are fixedly connected to the slide rails (31) matching the pulley group (527), and the upper end of the cross bar (525) is fixedly connected to the lower surface of the movable plate (51) through multiple groups of support columns (528).

3. A cavern lining support shotcrete construction device according to claim 1, characterized in that: The telescopic vertical rod (62) comprises a main vertical rod (621) with both ends open and a hollow interior, and a secondary vertical rod (622) with both ends open and a hollow interior, wherein the lower end of the main vertical rod (621) is detachably connected to a base (6211), the secondary vertical rod (622) is slidably connected to the upper end of the interior of the main vertical rod (621), the upper end of the secondary vertical rod (622) is threadedly connected to a connecting seat (6221), a telescopic rod (623) is installed inside the main vertical rod (621), the lower end of the telescopic rod (623) is fixedly connected to the base (6211) by a bolt, and the upper end of the telescopic rod (623) is fixedly connected to the connecting seat (6221) by a bolt.

4. A cavern lining support shotcrete construction device according to claim 3, characterized in that: The two groups of rotating seats (61) are respectively fixedly connected to the lower ends of the two groups of main vertical rods (621), and the interiors of the two groups of rotating seats (61) are fixedly connected with rotating rods (531). The two groups of rotating rods (531) are respectively rotatably connected to the support seats (53) at corresponding positions. The driving member three (63) includes a sprocket one (632), a motor two (633) and a gear one (634). The upper end of the movable plate (51) is fixedly connected to a protective shell one (631) through a bracket. The rear ends of the two groups of rotating rods (531) rotate and penetrate the protective shell one (631). The sprocket one (632) is fixedly sleeved on the rear end of one group of rotating rods (531). The output shaft of the motor two (633) is connected to the rear end of one group of rotating rods (531). ), the motor 2 (633) is fixedly connected to the top of the movable plate (51) through a bracket, the gear 1 (634) is fixedly sleeved on the rear end of the other set of rotating rods (531), one side of the gear 1 (634) is meshed with the gear 2 (635), the interior of the gear 2 (635) is fixedly connected to the support shaft (636), the outer side of the support shaft (636) and the rear of the gear 2 (635) are fixedly sleeved with a sprocket 2 (637), the sprocket 2 (637) and the sprocket 1 (632) are connected by a synchronous chain (638), the interior of the protective shell 1 (631) is also fixedly connected to the support frame (6361), and the support frame (6361) is rotatably connected to the support shaft (636).

5. The cavern lining support shotcrete construction device according to claim 1, characterized in that: The rear side of the fixing rod (7) is fixedly connected with a vertical limiting protrusion (72), and the adjustment frame (81) includes two groups of movable buckles (811) distributed up and down, and the two groups of movable buckles (811) are slidably connected to the outside of the fixing rod (7), and the movable buckles (811) and the limiting protrusion (72) are fixed by bolts, and the front ends of the two groups of movable buckles (811) are fixedly connected with a support plate (812), and the front ends of the two groups of support plates (812) are commonly fixed with a vertical plate ( 813), the fixing frame (82) includes a rotating plate (821) and two groups of fixing fasteners (822) for fixing the nozzle (15), the two groups of fixing fasteners (822) are fixedly connected to the front side of the rotating plate (821), and a rotating shaft (823) is fixedly connected to the middle position of the rear side of the rotating plate (821), and the rear end of the rotating shaft (823) rotates through the vertical plate (813) and is connected to a driving member (83) for driving the rotating plate (821) to swing back and forth.

6. A cavern lining support shotcrete construction device according to claim 5, characterized in that: The driving member 4 (83) includes a protective shell 2 (831), a gear 3 (832) and a rack (833), wherein the protective shell 2 (831) is fixedly connected to the rear side of the vertical plate (813), the rotating shaft (823) rotates through the protective shell 2 (831) and extends to the interior of the protective shell 2 (831), the gear 3 (832) is fixedly sleeved on the rear end of the rotating shaft (823), the rack (833) is engaged with the lower end of the gear 3 (832), the inner bottom of the protective shell 2 (831) is fixedly connected to a guide rail (834), the rack (833) is slidably connected to the top of the guide rail (834), and the interior of the protective shell 2 (831) is also fixedly connected to a reciprocating push rod (835), and the telescopic end of the reciprocating push rod (835) is fixedly connected to one end of the rack (833).

7. The cavern lining support shotcrete construction device according to claim 3, characterized in that: The fixed rod (7) is open at both ends and hollow inside. The lower end of the fixed rod (7) is threadedly connected to the connecting seat 2 (71). The connecting seat 2 (71) and the connecting seat 1 (6221) are fixed by bolts. The distance component (9) includes a movable rod (91) with both ends open and hollow inside, an elastic positioning member (93) and a contact seat (94). The movable rod (91) is slidably connected to the upper end of the inner part of the fixed rod (7). The upper end of the movable rod (91) is threadedly sleeved with a connecting seat 3 (911). The interior of the movable rod (91) is connected to the telescopic rod 2 (92). The upper end of the telescopic rod 2 (92) is fixedly connected to the connecting seat 3 (911) by bolts. The lower end of the telescopic rod 2 (92) is fixedly connected to the connecting seat 2 (71) by bolts. The elastic positioning member (93) includes a fixed cylinder seat (931), a movable cylinder seat (932) and a spring 3 (933). The cylinder seat (931) is fixedly connected to the upper end of the connecting seat three (911), the movable cylinder seat (932) is slidably connected to the inner upper end of the fixed cylinder seat (931), the lower end of the spring three (933) is fixedly connected to the fixed cylinder seat (931), the upper end of the spring three (933) is fixedly connected to the movable cylinder seat (932), the interior of the fixed cylinder seat (931) and located on the inner side of the spring three (933) is fixedly connected with a mounting cylinder (9312), the interior of the mounting cylinder (9312) is fixedly connected with a contact sensor (934), the interior of the movable cylinder seat (932) is fixedly connected with an abutment rod (9321) for triggering the contact sensor (934), the contact seat (94) is fixedly connected to the upper end of the movable cylinder seat (932), wherein, after receiving the contact signal, the contact sensor (934) controls the telescopic rod one (623) to stop operating through the control terminal.

8. The cavern lining support shotcrete construction device according to claim 3, characterized in that: A receiving plate (10) for fixing a partial section of the feed pipe (14) is fixedly connected to one side of the telescopic vertical rod (62), a U-shaped buckle (101) is fixedly connected to the front end of one side of the receiving plate (10), and the U-shaped buckle (101) is fixedly connected to the main vertical rod (621) through a bolt, and a U-shaped groove (102) is provided through the front end of the receiving plate (10), and a plurality of groups of fixing rings (103) for constraining the position of the feed pipe (14) are symmetrically fixed on the left and right sides of the receiving plate (10), and pipe buckles (17) for fixing the partial position of the feed pipe (14) are installed on the left and right sides of the front end of the upper surface of the frame (11), and the feed pipe (14) is laid in sequence along the pipe buckle (17), the rear end of the receiving plate (10) and the U-shaped groove (102).

Images