CN217632487U

CN217632487U - Combined hole distribution structure for reducing tunnel overbreak and underexcavation under limitation of steel arch frame

Info

Publication number: CN217632487U
Application number: CN202221550368.1U
Authority: CN
Inventors: 刘利斌; 尚亚新; 牛玉宾; 陈云明
Original assignee: Second Engineering Co Ltd of China Railway Beijing Engineering Group Co Ltd
Current assignee: Second Engineering Co Ltd of China Railway Beijing Engineering Group Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-10-21
Anticipated expiration: 2032-06-20

Abstract

The utility model relates to a tunnel engineering technical field, and it includes first supporting shoe and second supporting shoe and drill bit to disclose a combination cloth pore structure that reduces tunnel owe to dig under the restriction of steel bow member, the drill bit be equipped with the movable tube, the movable tube is equipped with the intubate, the movable tube is equipped with the operation panel, the operation panel is equipped with the diaphragm, the diaphragm is equipped with the kelly, the kelly is equipped with the pull lid, the kelly is equipped with the fixed plate, the kelly is equipped with expanding spring, the drill bit is provided with second calorie of hole, the one end correspondence of kelly carries out the joint with second calorie of hole, above-mentioned a combination cloth pore structure that reduces tunnel owe to dig under the restriction of steel bow member reduces tunnel owe and uses in some tunnel blasting construction through the cooperation in kelly and second calorie of hole, receive construction equipment and construction level restriction, the way contour line lofting is inaccurate, make tunnel bore and explode method excavation in-process be difficult to avoid appearing owe the owe problem, thereby seriously influence construction cycle, increase construction cost's problem.

Description

Combined hole distribution structure for reducing tunnel overbreak and underexcavation under limitation of steel arch frame

Technical Field

The utility model relates to a tunnel engineering technical field specifically is a steel bow member restriction is reduced tunnel and is surpassed combination cloth pore structure of oweing digging down.

Background

In the actual drilling and blasting construction, the steel arch centering of the primary support is constructed next to the tunnel face, particularly in the weak surrounding rock, the distance between the steel arch centering and the tunnel face is smaller than the support distance, and generally does not exceed 50cm of an assembly block. And when the air-leg type air drill is mostly adopted in a construction site, the opening positions of the peripheral holes have to be deviated inwards to the designed excavation contour line and holes are drilled at a larger external insertion angle under the limitation of a steel arch frame.

In the existing tunnel blasting construction, the road contour line lofting is inaccurate due to the limitation of construction equipment and construction level, so that the problem of overbreak and underbreak is difficult to avoid in the tunnel drilling and blasting method excavation process, the construction period is seriously influenced, and the construction cost is increased, therefore, the combined hole distribution structure for reducing the overbreak and underbreak of the tunnel under the limitation of a steel arch is necessary to be used in the technical field of the existing tunnel engineering.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To in the construction of current tunnel blasting, receive construction equipment and construction level restriction, way contour line laying-out is inaccurate for tunnel brill explodes the method excavation in-process and is difficult to avoid appearing the owe problem of digging, thereby seriously influences construction cycle, increases construction cost's problem, the utility model provides a reduce the combination cloth pore structure that the tunnel owes to dig under the restriction of steel bow member, the improvement laying-out accuracy advantage that possesses is with the problem that the solution background art provided.

(II) technical scheme

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a reduce combination cloth pore structure that tunnel surpassed owed to dig under steel bow member restriction, includes first supporting shoe and second supporting shoe and drill bit, the drill bit on the activity be equipped with the movable tube, the one end annular of movable tube is fixed to be equipped with the intubate, the last symmetry of movable tube is fixed to be equipped with the operation panel, the one end of operation panel is all fixed to be equipped with the diaphragm, the diaphragm on all the activity be equipped with the kelly, the one end activity of kelly runs through the intubate, the other end of kelly is all fixed to be equipped with the pull lid, the kelly on all fixed be equipped with the fixed plate, the fixed plate is located between diaphragm and the intubate, the kelly on all be equipped with expanding spring, expanding spring's both ends carry out fixed assembly with diaphragm and fixed plate respectively, the drill bit on the symmetry be provided with second calorie hole, the one end correspondence of kelly carries out the joint with second calorie hole, avoids movable tube and intubate to move on the drill bit.

Preferably, the fixing rods are symmetrically and fixedly assembled between the first supporting block and the second supporting block, the vertical blocks are symmetrically and fixedly assembled on the first supporting block, the sector plates are fixedly assembled on the vertical blocks, a plurality of assembling pipes are annularly and fixedly assembled on the sector plates, the assembling pipes and the sector plates are provided with jacks in a penetrating mode, the assembling pipes are provided with slots, the slots are located on the outer sides of the jacks, first clamping holes are symmetrically formed in the surfaces of the assembling pipes, and the first clamping holes are communicated with the slots.

Preferably, when the intubate on the activity pipe and the slot on the assembly pipe carried out the activity assembly, the one end of card pole carried out the joint to first card hole for the drill bit is all the time in assembly pipe and activity pipe, increases the accuracy of drilling.

Preferably, the second supporting block is fixedly assembled with an operating motor, the output end of the operating motor is fixedly assembled with a first lead screw, the first lead screw movably penetrates through the second supporting block, the first lead screw rotates between two fixed rods, the fixed rods and the first lead screw are movably assembled with a movable block, the movable block is rotated in the movable block through the first lead screw, the movable block is moved on the fixed rods, a rotating cavity is formed in the movable block, two symmetrical side surfaces of the movable block are respectively provided with a traction groove, the traction grooves are correspondingly communicated with the rotating cavity, one end of the movable block is fixedly assembled with a traction motor, the output end of the traction motor is fixedly assembled with a second lead screw, the second lead screw movably penetrates through the movable block to rotate in the rotating cavity, a threaded sleeve is assembled on the second lead screw in a threaded manner, the threaded sleeve is located in the rotating cavity, sliding blocks are symmetrically and fixedly assembled on the threaded sleeve, the sliding blocks are correspondingly and movably assembled with the traction grooves, the sliding blocks rotate in the threaded sleeve is arranged in the threaded sleeve, the sliding blocks are fixedly assembled in the traction grooves, connecting plates are fixedly assembled on the two sides of the movable block, the connecting plates are located on the two sides of the movable block, the top of the connecting plates are symmetrically assembled on the mounting plate, and the top of the mounting plate is assembled on the mounting plate, and the mounting plate.

Preferably, the bottom of assembly plate fixed assembly has the cylinder, the output of cylinder fixed assembly has the piston rod, the piston rod activity runs through the assembly plate to the top fixed assembly of piston rod has the assembly piece, the assembly piece on fixed assembly have the installation motor, the output fixed assembly of installation motor has the drill bit, the drill bit activity runs through the assembly piece.

Preferably, the assembly block on the activity be equipped with the pull block, the fixed push pedal that is equipped with in one end of pull block, the pull block on be equipped with elastic spring, elastic spring's both ends respectively with push pedal and assembly block fixed assembly, the pull block on be provided with the scale mark.

Preferably, the distance between the sector plate and one end of the drill is smaller than the distance between the sector plate and the push plate, and the distance between one end of the drill and one end of the push plate is the thickness of the sector plate, so that the punching depth can be known conveniently.

(III) advantageous effects

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model discloses reduce the combination cloth pore structure that the tunnel surpassed owed and dug under the restriction of well steel bow member, start the operation motor, the movable block is under the rotation of first lead screw, make the movable block carry out the back-and-forth movement on the dead lever, start traction motor simultaneously, the second lead screw rotates in threaded sleeve, let the sliding block control about on the pull groove, control cylinder, make the piston rod stretch out and draw back, conveniently adjust the height of assembly piece, the drill bit calibration assembly pipe of being convenient for, pulling pull cover, make the one end of kelly extract from second card hole, remove movable pipe and intubate, let slot on intubate and the assembly pipe carry out the activity assembly, and through not hard up pull cover, under expanding spring's spring action, make the one end of kelly carry out the joint to first calorie hole, start the installation motor this moment, make the drill bit bore, make the drilling position of drill bit obtain fixedly, improve the lofting accuracy.

2. The utility model discloses the combination cloth pore structure that the well steel bow member restriction was reduced the tunnel and was surpassed owing and dig down, with device laminating tunnel surface, start operation motor for the movable block removes on the dead lever, the drill bit inserts in the jack of assembly pipe this moment, and the one end laminating tunnel surface of drill bit, push pedal laminating sector plate this moment, the drilling depth of drill bit, make the push pedal to the shrink of elastic spring atress, the traction block removes on the assembly block, drilling depth can be known through the scale mark on the traction block, be convenient for operate.

Drawings

FIG. 1 is a schematic front view of a combined hole distribution structure for reducing tunnel overbreak under the limitation of a steel arch frame of the utility model;

FIG. 2 is a schematic side view of the combined hole arrangement structure for reducing tunnel overbreak under the limitation of the steel arch of the present invention;

fig. 3 is an enlarged schematic structural diagram of a in fig. 2 of the present invention.

In the figure:

10. a first support block; 11. a second support block; 12. fixing the rod; 13. operating the motor;

20. a first lead screw; 21. a movable block; 22. a rotation chamber; 23. a traction groove;

30. a threaded sleeve; 31. a slider; 32. a connecting plate; 33. mounting a plate;

40. a vertical plate; 41. assembling a plate; 42. a cylinder; 43. a piston rod;

50. assembling the block; 51. a traction motor; 52. installing a motor; 53. a drill bit;

60. a movable tube; 61. inserting a tube; 62. a traction block; 63. pushing the plate;

70. an elastic spring; 71. scale lines; 72. a sector plate; 73. assembling a pipe;

80. a jack; 81. a slot; 82. a first card hole; 83. a second lead screw;

90. a second card hole; 91. an operation panel; 92. a transverse plate; 93. a clamping rod; 94. a fixing plate; 95. a pull cover; 96. a tension spring; 97. and (5) a vertical block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 to 3, it is the utility model discloses a reduce tunnel surpass owe under restriction of steel bow member of a preferred embodiment's a combination cloth pore structure sketch of digging, the steel bow member restriction of this embodiment reduces tunnel surpass owe dig under combination cloth pore structure include first supporting shoe 10 and second supporting shoe 11 and drill bit 53, drill bit 53 on the activity be equipped with movable tube 60, the annular fixed intubate 61 that is equipped with in one end of movable tube 60, the fixed operation panel 91 that is equipped with of symmetry on the movable tube 60, the one end of operation panel 91 is all fixed and is equipped with diaphragm 92, diaphragm 92 on all the activity be equipped with kelly 93, the one end activity of kelly 93 runs through intubate 61, the other end of kelly 93 all fixed and is equipped with pull lid 95, kelly 93 on all fixed and be equipped with fixed plate 94, fixed plate 94 is located between diaphragm 92 and intubate 61, is equipped with fixed expanding spring 96 between diaphragm 92 and fixed plate 94, kelly 93 assemble in expanding spring 96, drill bit 53 on the symmetry be provided with second kelly 90, the one end of kelly 93 correspond and carry out the joint with second kelly 90.

First supporting block 10 with second supporting block 11 between the fixed dead lever 12 of symmetry fixed assembly, first supporting block 10 on the fixed riser 97 of symmetry fixed assembly, on the riser 97 fixed assembly have a sector plate 72, sector plate 72 on the annular fixed assembly have a plurality of assembly pipes 73, assembly pipe 73 with sector plate 72 on run through and be provided with jack 80, assembly pipe 73 on all be provided with slot 81, slot 81 is located the outside of jack 80, the surface symmetry of assembly pipe 73 be provided with and carry out the first card hole 82 that communicates with slot 81, when intubate 61 on the activity pipe 60 and slot 81 on the assembly pipe 73 carry out movable assembly, the one end of card pole 93 carries out the joint to first card hole 82.

The second support block 11 is fixedly assembled with an operating motor 13, the output end of the operating motor 13 is fixedly assembled with a first screw rod 20, the first screw rod 20 movably penetrates through the second support block 11, the first screw rod 20 rotates between the two fixed rods 12, the fixed rods 12 and the first screw rod 20 are movably assembled with a movable block 21, a rotating cavity 22 is arranged inside the movable block 21, two symmetrical side surfaces of the movable block 21 are respectively provided with a traction groove 23 communicated with the rotating cavity 22, one end of the movable block 21 is fixedly assembled with a traction motor 51, the output end of the traction motor 51 is fixedly assembled with a second screw rod 83, the second screw rod 83 movably penetrates through the movable block 21 to rotate in the rotating cavity 22, and a thread sleeve 30 positioned in the rotating cavity 22 is assembled on the second screw rod 83 in a thread manner, the sliding block 31 that moves at the pull slot 23 is symmetrically and fixedly assembled on the threaded sleeve 30, the sliding block 31 on all fixedly assembled with connecting plate 32, the connecting plate 32 is located the both sides of movable block 21, the top of connecting plate 32 is fixedly assembled with mounting plate 33, the mounting plate 33 is located the top of movable block 21, the mounting plate 33 on be symmetrically and fixedly assembled with riser 40, the top of riser 40 is fixedly assembled with assembly plate 41, the bottom of assembly plate 41 is fixedly assembled with cylinder 42, the output of cylinder 42 is fixedly assembled with piston rod 43, the activity of piston rod 43 runs through assembly plate 41 to the top of piston rod 43 is fixedly assembled with assembly block 50, assembly block 50 on be fixedly assembled with installation motor 52, the output of installation motor 52 is fixedly assembled with drill bit 53, the activity of drill bit 53 runs through assembly block 50.

In this embodiment, the operation motor 13 is started, the movable block 21 is rotated by the first lead screw 20, so that the movable block 21 moves back and forth on the fixed rod 12, and meanwhile, the traction motor 51 is started, the second lead screw 83 rotates in the threaded sleeve 30, the sliding block 31 moves left and right on the traction groove 23, the cylinder 42 is controlled, so that the piston rod 43 stretches out and draws back, the height of the assembly block 50 is conveniently adjusted, the drill bit 53 is convenient to calibrate the assembly pipe 73, the pull-out cover 95 is pulled, so that one end of the clamping rod 93 is pulled out from the second clamping hole 90, the movable pipe 60 and the insertion pipe 61 are moved, the insertion pipe 61 and the insertion slot 81 on the assembly pipe 73 are movably assembled, and by loosening the pull-out cover 95, under the elastic force action of the expansion spring 96, one end of the clamping rod 93 is clamped with the first clamping hole 82, at this time, the installation motor 52 is started, so that the drill bit 53 drills, so that the drilling position of the drill bit 53 is fixed, and the lofting accuracy is improved.

Example 2

As shown in fig. 1 to 3, which are schematic diagrams of a combined hole distribution structure for reducing tunnel overbreak under the restriction of a steel arch according to another preferred embodiment of the present invention, in order to facilitate the knowledge of the drilling depth, on the basis of example 1, the device is improved, the assembly block 50 is movably assembled with a traction block 62, one end of the traction block 62 is fixedly assembled with a push plate 63, an elastic spring 70 is fixedly assembled between the push plate 63 and the assembly block 50, the traction block 62 is assembled inside the elastic spring 70, the traction block 62 is provided with a scale mark 71, the distance from the sector plate 72 to one end of the drill bit 53 is smaller than the distance from the sector plate 72 to the push plate 63, and the distance from one end of the drill bit 53 to one end of the push plate 63 is the thickness of the sector plate 72.

In this embodiment, with the device laminating tunnel surface, start operation motor 13 for the movable block 21 removes on dead lever 12, during the jack 80 of assembly pipe 73 was inserted to drill bit 53 this moment, and the tunnel surface is laminated to the one end of drill bit 53, push pedal 63 laminates sector plate 72 this moment, the drilling depth of drill bit 53, make push pedal 63 to the shrink of elasticity spring 70 atress, pull block 62 removes on assembly block 50, can know drilling depth through scale mark 71 on the pull block 62, be convenient for operate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A combined hole distribution structure for reducing tunnel overbreak under the limitation of a steel arch comprises a first supporting block (10), a second supporting block (11) and a drill bit (53),

the method is characterized in that:

drill bit (53) go up the activity and be equipped with movable tube (60), the one end annular of movable tube (60) is fixed to be equipped with intubate (61), symmetrical fixed equipment has operation panel (91) on movable tube (60), the one end of operation panel (91) is all fixed to be equipped with diaphragm (92), diaphragm (92) on all the activity be equipped with kelly (93), the one end activity of kelly (93) runs through intubate (61), the other end of kelly (93) is all fixed to be equipped with pull lid (95), kelly (93) on all fixed be equipped with fixed plate (94), fixed plate (94) are located between diaphragm (92) and intubate (61), kelly (93) on all be equipped with expanding spring (96), the both ends of expanding spring (96) carry out fixed assembly with diaphragm (92) and fixed plate (94) respectively, drill bit (53) on the symmetry be provided with second card hole (90), the one end correspondence of kelly (93) carries out the joint with second card hole (90).

2. The combined hole distribution structure for reducing the overbreak and the underexcavation of a tunnel under the limitation of a steel arch according to claim 1, wherein: first supporting block (10) with second supporting block (11) between the symmetry fixed dead lever (12) that is equipped with, first supporting block (10) on the symmetry fixed upright block (97) that is equipped with, upright block (97) on the fixed sector plate (72) that is equipped with, sector plate (72) on the annular fixed a plurality of assembly pipes (73) that are equipped with, assembly pipe (73) with sector plate (72) on run through and be provided with jack (80), assembly pipe (73) on all be provided with slot (81), slot (81) are located the outside of jack (80), the surface symmetry of assembly pipe (73) be provided with first calorie of hole (82), first calorie of hole (82) all communicate with slot (81).

3. The combined hole distribution structure for reducing the overbreak and the underexcavation of a tunnel under the limitation of a steel arch frame as claimed in claim 2, wherein: when the insertion tube (61) on the movable tube (60) is movably assembled with the slot (81) on the assembly tube (73), one end of the clamping rod (93) is clamped with the first clamping hole (82).

4. The combined hole distribution structure for reducing the overbreak and the underexcavation of a tunnel under the limitation of a steel arch according to claim 3, wherein: an operating motor (13) is fixedly assembled on the second supporting block (11), a first screw rod (20) is fixedly assembled at the output end of the operating motor (13), the first screw rod (20) movably penetrates through the second supporting block (11), the first screw rod (20) rotates between two fixed rods (12), movable blocks (21) are movably assembled on the fixed rods (12) and the first screw rod (20), a rotating cavity (22) is formed in each movable block (21), two symmetrical side surfaces of each movable block (21) are respectively provided with a traction groove (23), each traction groove (23) is correspondingly communicated with the corresponding rotating cavity (22), one end of each movable block (21) is fixedly assembled with a traction motor (51), the output end of each traction motor (51) is fixedly assembled with a second screw rod (83), each second screw rod (83) movably penetrates through each movable block (21) to each rotating cavity (22) to rotate, a threaded sleeve (30) is assembled on each second screw rod (83), each threaded sleeve (30) is located in each rotating cavity (22), each threaded sleeve (30) is symmetrically assembled on each threaded sleeve (31), each movable block (31) is symmetrically assembled with a corresponding connecting plate (31), and each sliding block (31) is assembled with each movable connecting plate (32), connecting plate (32) are located the both sides of movable block (21), and the top fixed mounting of connecting plate (32) is equipped with mounting panel (33), and mounting panel (33) are located the top of movable block (21), mounting panel (33) on the symmetry fixed mounting be equipped with riser (40), the top fixed mounting of riser (40) be equipped with assembly plate (41).

5. The combined hole distribution structure for reducing the overbreak and the underexcavation of a tunnel under the limitation of a steel arch according to claim 4, wherein: the bottom fixed assembly of assembly plate (41) be equipped with cylinder (42), the output fixed assembly of cylinder (42) is equipped with piston rod (43), piston rod (43) activity runs through assembly plate (41) to the top fixed assembly of piston rod (43) is equipped with assembly piece (50), assembly piece (50) on fixed assembly be equipped with installation motor (52), the output fixed assembly of installation motor (52) is equipped with drill bit (53), drill bit (53) activity runs through assembly piece (50).

6. The combined hole distribution structure for reducing the overbreak and the underexcavation of a tunnel under the limitation of a steel arch frame as claimed in claim 5, wherein: the assembling block (50) on the activity be equipped with pull block (62), the one end of pull block (62) is fixed to be equipped with push pedal (63), pull block (62) on be equipped with elasticity spring (70), the both ends of elasticity spring (70) are fixed the assembly with push pedal (63) and assembling block (50) respectively, pull block (62) on be provided with scale mark (71).

7. The combined hole distribution structure for reducing the overbreak and the underexcavation of a tunnel under the limitation of a steel arch according to claim 6, wherein: the distance between the sector plate (72) and one end of the drill bit (53) is smaller than the distance between the sector plate (72) and the push plate (63), and the distance between one end of the drill bit (53) and one end of the push plate (63) is the thickness of the sector plate (72).