CN208203312U - A kind of constructing tunnel top block support device - Google Patents

Abstract

The utility model relates to constructing tunnel engineering device technique field more particularly to a kind of constructing tunnel top block support devices.The technical problems to be solved in the utility model is that brick installation in tunnel is inconvenient to support.In order to solve the above-mentioned technical problem, the utility model provides a kind of constructing tunnel top block support device, including stabilizing base, accommodating chamber is offered in the stabilizing base, running fix device is provided in the accommodating chamber, the shifting chute that receiving cavity wall two sides of the bottom open up is extended through at the top of the running fix device and is extended to below, jacking system is fixedly connected at the top of the stabilizing base, the top inside the jacking system offers trimming groove.The utility model passes through the improvement to micromatic setting, when rotating screw thread adjusting set, screw thread adjusting set can be made to move up on screw thread, at this time, it can make fine tuning support rod that fine tuning jacking block continuation be pushed to push top plate by a small margin, so as to adjust the dynamics that arc supporting plate pushes brick again.

Description

A kind of constructing tunnel top block support device

Technical field

The utility model relates to constructing tunnel engineering device technique field, specially a kind of constructing tunnel is supported with top block and is filled It sets.

Background technique

Tunnel needs to install brick on the wall in tunnel during construction, so as to improve tunnel entirety Stability, when installing the brick of tunnel top metope, due to gravity, and concrete does not solidify completely, for this reason, it may be necessary to Brick is supported by pillar, prevents it from falling, although can complete to install, pillar is during the jacking up, if long Spend it is improper, need to be sawed it is short, and it is inconvenient removed, in disassembly, need to use hammer and loosen pillar, this When, influence whether the original stability of brick.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of constructing tunnel top block support device, solution Tunnel brick of having determined installation is inconvenient to the problem of supporting.

(2) technical solution

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of constructing tunnel top Brick support device, including stabilizing base offer accommodating chamber in the stabilizing base, and running fix dress is provided in the accommodating chamber It sets, the shifting chute that receiving cavity wall two sides of the bottom open up is extended through at the top of the running fix device and extends under it It is square, it is fixedly connected with jacking system at the top of the stabilizing base, the top inside the jacking system offers trimming groove, described Micromatic setting is provided in trimming groove, the top of the micromatic setting is fixedly connected through trimming groove and with the bottom of top plate, institute The bottom for stating top plate is overlapped on the bottom of jacking system, and arc supporting plate is fixedly connected at the top of the top plate.

Preferably, the running fix device includes locating piece, and the locating piece is socketed in the middle part of accommodating chamber inner cavity, institute The two sides for stating locating piece are inlaid with bearing, and screw rod is plugged in two bearings, opposite one end of two screw rods point Not Guan Chuan stabilizing base two sides and be fixedly connected respectively with one end of its two external hand handle, on the screw rod and be located at and accommodate Intracavitary to be socketed with ball nut, the bottom of the ball nut is fixedly connected with the top of vertical connecting shaft, and two vertically connect The bottom end of spindle extends through two shifting chutes and is fixedly connected respectively at the top of two fixture blocks, four inside the fixture block Right angle offers circular groove, is socketed with round block in the circular groove, and at the axle center of the round block bottom and top of adjustment axis is solid Fixed connection, the bottom end of the adjustment axis through fixture block bottom and be fixedly connected at the top of arc-shaped cover below, the arc The two sides of shape cover inner wall in the arc-shaped cover and are socketed in transverse connecting shaft and are socketed with ball by lateral connection axis connection, The exposed lower section in arc-shaped cover in the bottom of the ball side surface, and two opposite sides of fixture block are fixedly connected to clamping Block, two opposite sides of the gripping block are fixedly connected to raised pads.

Preferably, the jacking system includes collecting complete, and the complete inner sleeve of collection connects mechanical piston, the mechanical piston Top is fixedly connected with the bottom end of mechanical prop, and the top of the mechanical prop is taken through the bottom for collecting set of top and top plate It connects, the set of two sides of collection are fixedly connected to protective cover, are fixedly connected with hydraulically extensible at the top of the protective cover inner wall Be fixedly connected at the top of cylinder, the free end of the hydraulically extensible cylinder and transmission push plate, and two transmission push plates it is opposite one The side that side is fixedly connected to drive block is fixedly connected, and two drive blocks are socketed in respectively collects the biography that complete two sides open up In dynamic slot, and the opposite side of two drive blocks is fixedly connected with the two sides of mechanical piston side surface respectively, in the protective cover The side of wall is fixedly connected with orientation rail, slidably connects orientation block in the orientation rail, the other side of the transmission push plate with The side of orientation block is fixedly connected, and the top of the complete inner wall of the collection and the two sides for being located at mechanical prop are fixedly connected to anti-bias It covers, anti-bias movable block is socketed in the anti-bias set, the top of the anti-bias movable block passes through damping spring and anti-bias set inner wall Top movable connection, the bottom of the anti-bias movable block is fixedly connected with the top of anti-side spin, and the bottom end of two anti-side spins Run through the top of anti-bias set and be fixedly connected respectively with the two sides at the top of mechanical piston, anti-bias put on is socketed with anti-bias cunning Set, and the opposite side of two anti-bias sliding sleeves is fixedly connected with the two sides of clips side surface by stablizing axis respectively, it is described Clips are fixedly attached on mechanical prop.

Preferably, the micromatic setting includes fine tuning piston, and the fine tuning piston is socketed in trimming groove, and the fine tuning is lived It fills in and is fixedly connected at the axle center at top with the bottom end of mandril, top and and top plate of the top of the mandril through trimming groove inner wall Bottom be fixedly connected, the side surface of the mechanical prop and be located at and collect set of outside and offer screw thread, the mechanical prop The position of upper and corresponding screw thread is socketed with screw thread adjusting set, and the two sides at the top of the screw thread adjusting set are fixedly connected to fine tuning branch Strut, the top of the fine tuning support rod is fixedly connected with fine tuning jacking block, and the top of two fine tuning jacking blocks is overlapped on top respectively The two sides in board bottom portion.

Preferably, it is described it is anti-bias put on and be located at below anti-bias sliding sleeve be fixedly attached to the soft set of limit.

Preferably, the bottom end of the mechanical prop is located at the axle center at the top of mechanical piston, and the top of mechanical prop is taken It connects in the middle position of top board undersurface.

Preferably, it is described orientation rail height it is equal with the height of driving groove, and orient rail height be 2.5m-3.5m it Between.

Preferably, the radian of the arc supporting plate cambered surface is 40 ° -50 °, and the area of top plate top surface and arc supporting plate bottom surface Area equation.

(3) beneficial effect

The utility model provides a kind of constructing tunnel top block support device, have it is following the utility model has the advantages that

(1), constructing tunnel top block support device, by the improvement to jacking system, hydraulically extensible cylinder is opened It is dynamic, it can make to be driven push plate drive mechanical piston in the complete interior upward sliding of collection, at this point, mechanical prop can be made to push Roof The arc supporting plate of portion's setting is against the bottom of brick, to facilitate the brick of fixed tunnel top metope setting.

(2), constructing tunnel top block support device, by the improvement to micromatic setting, when rotation screw thread is adjusted When set, screw thread adjusting set can be made to move up on screw thread, at this point, can make to finely tune support rod promotion fine tuning top Block continuation pushes top plate by a small margin, so as to adjust the dynamics that arc supporting plate pushes brick again.

(3), constructing tunnel top block support device, by the improvement to running fix device, when rotation hand handle When, the use of fitted bearing can make screw rod stable rotation, at this point, ball nut can drive two folders by vertical connecting shaft Block relative movement, is matched for clamping tightly the use for the raised pads being arranged on block, two fixture blocks can be made to stablize clamping preparatory on the ground On the bearing block of setting, stabilizing base is pushed, ball can be made to roll on the ground, at this point, adjusting arc supporting plate to facilitate Position.

Detailed description of the invention

Fig. 1 is the positive cross-sectional view of the utility model structure；

Fig. 2 is the enlarged drawing of structure at A in the utility model Fig. 1.

In figure: 1 stabilizing base, 2 accommodating chambers, 3 running fix devices, 301 locating pieces, 302 bearings, 303 screw rods, 304 hand handles, 305 ball nuts, 306 vertical connecting shafts, 307 fixture blocks, 308 circular grooves, 309 round blocks, 310 adjustment axis, 311 arc-shaped covers, 312 are laterally Connecting shaft, 313 balls, 314 gripping blocks, 315 raised pads, 4 shifting chutes, 5 jacking systems, 501 complete, 502 mechanical pistons of collection, 503 mechanical props, 504 protective covers, 505 hydraulically extensible cylinders, 506 transmission push plates, 507 drive blocks, 508 driving grooves, 509 orientations Rail, 510 orientation blocks, 511 anti-bias sets, 512 anti-bias movable blocks, 513 damping springs, 514 anti-side spins, 515 anti-bias sliding sleeves, 516 are surely Dead axle, 517 clips, the soft set of 518 limits, 6 trimming grooves, 7 micromatic settings, 71 fine tuning pistons, 72 mandrils, 73 screw threads, 74 screw threads Adjusting set, 75 fine tuning support rods, 76 fine tuning jacking blocks, 8 top plates, 9 arc supporting plates.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of constructing tunnel top block support dress It sets, including stabilizing base 1, accommodating chamber 2 is offered in stabilizing base 1, running fix device 3, running fix dress are provided in accommodating chamber 2 3 top is set to extend through shifting chute 4 that 2 inner wall two sides of the bottom of accommodating chamber open up and extend to below, running fix device 3 Including locating piece 301, locating piece 301 is socketed in the middle part of 2 inner cavity of accommodating chamber, and the two sides of locating piece 301 are inlaid with bearing 302, and screw rod 303 is plugged in two bearings 302, two opposite one end of screw rod 303 extend through the two sides of stabilizing base 1 And be fixedly connected respectively with one end of its two external hand handle 304, ball is socketed on screw rod 303 and in accommodating chamber 2 Nut 305, when rotating two hand handles 304, due to the ridge orientation on two screw rods 303 on the contrary, for this purpose, identical direction rotates When two screw rods 303, it can make two ball nuts 305 respectively on two screw rods 303 simultaneously relative to or backwards to mobile, rolling The bottom of pearl nut 305 is fixedly connected with the top of vertical connecting shaft 306, and the bottom end of two vertical connecting shafts 306 is passed through respectively It wears two shifting chutes 4 and is fixedly connected respectively with the top of two fixture blocks 307, four inside fixture block 307 right angle opens up Have circular groove 308, be socketed with round block 309 in circular groove 308, at the axle center of 309 bottom of round block with the top of adjustment axis 310 is fixed connects It connects, the bottom end of adjustment axis 310 is run through the bottom of fixture block 307 and is fixedly connected with the top of arc-shaped cover 311 below, circular groove Lubricating oil can be adjusted in actual operation in gap inside 308, and the top of adjustment axis 310 and bottom end are set respectively It sets at the middle part of 311 top opposite side of round block 309 and arc-shaped cover, round block 309 can be made to stablize supporting arc by adjustment axis 310 The two sides of shape set 311,311 inner wall of arc-shaped cover are connected by transverse connecting shaft 312, in arc-shaped cover 311 and are socketed in lateral connection Ball 313 is socketed on axis 312, the exposed lower section in arc-shaped cover 311 in the bottom of 313 side surface of ball is stablized when pushing emphatically When any side of seat 1, round block 309 can be made to rotate in circular groove 308, by adjustment axis 310,313 band of ball can be changed Direction when dynamic stability seat 1 is mobile, and two opposite sides of fixture block 307 are fixedly connected to gripping block 314, two gripping blocks 314 opposite sides are fixedly connected to raised pads 315, and the top of stabilizing base 1 is fixedly connected with jacking system 5, jacking system 5 Internal top offers trimming groove 6, and jacking system 5 includes collection complete 501, collects complete 501 inner sleeve and connects mechanical piston 502, machine The top of tool piston 502 is fixedly connected with the bottom end of mechanical prop 503, and the top of mechanical prop 503 is through the top of collection complete 501 Portion and the bottom of top plate 8 overlap, and the bottom end of mechanical prop 503 is located at the axle center at 502 top of mechanical piston, and mechanical prop 503 top is overlapped on the middle position of 8 bottom surface of top plate, and the bottom end and top of mechanical prop 503 are separately positioned on mechanical piston 502 and top 8 opposite sides middle part, can make mechanical piston 502 by mechanical prop 503 stablize roof supporting 8, collect it is complete 501 two sides are fixedly connected to protective cover 504, are fixedly connected with hydraulically extensible cylinder 505 at the top of 504 inner wall of protective cover, The free end of hydraulically extensible cylinder 505 with transmission push plate 506 top be fixedly connected, and two transmission push plates 506 it is opposite one The side that side is fixedly connected to drive block 507 is fixedly connected, and two drive blocks 507 are socketed in complete 501 two sides of collection respectively and open If driving groove 508 in, and the opposite side of two drive blocks 507 respectively with the two sides of 502 side surface of mechanical piston are fixed connects It connects, the side of 504 inner wall of protective cover is fixedly connected with orientation rail 509, orients and slidably connects orientation block 510, transmission in rail 509 The other side of push plate 506 is fixedly connected with the side of orientation block 510, orients the height and the height phase of driving groove 508 of rail 509 Deng, and the height for orienting rail 509 orients the ratio between rail 509 and driving groove 508 between 2.5m-3.5m, orients block 510 When being moved to the top of orientation rail 509, due to being in equal proportions for orientation block 510 and drive block 507, for this purpose, drive block 507 is just It is moved to the top of driving groove 508, so as to operate normally the machine internal, collects the top of complete 501 inner wall and is located at The two sides of mechanical prop 503 are fixedly connected to anti-bias set 511, and anti-bias movable block 512, anti-bias work are socketed in anti-bias set 511 The top of motion block 512 is connect by damping spring 513 with the top movable of anti-bias 511 inner wall of set, the bottom of anti-bias movable block 512 Be fixedly connected with the top of anti-side spin 514, and the bottom end of two anti-side spins 514 run through anti-bias set 511 top and respectively with The two sides at 502 top of mechanical piston are fixedly connected, being capable of compression shock absorption when anti-bias movable block 512 slides in anti-bias set 511 Spring 513 avoids mechanical prop so as to avoid anti-bias movable block 512 from having mobile cushioning ability in anti-bias set 511 503 push the pressure of arc supporting plate 9 excessive, anti-bias sliding sleeve 515 are socketed on anti-bias set 511, and two anti-bias sliding sleeves 515 are opposite Side be fixedly connected respectively with the two sides of 517 side surface of clips by stablizing axis 516, clips 517 are fixedly attached to On mechanical prop 503, the soft set 518 of limit, trimming groove 6 are fixedly attached on anti-bias set 511 and positioned at the lower section of anti-bias sliding sleeve 515 It is inside provided with micromatic setting 7, the top of micromatic setting 7 is fixedly connected through trimming groove 6 and with the bottom of top plate 8, the bottom of top plate 8 Portion is overlapped on the bottom of jacking system 5, and the top of top plate 8 is fixedly connected with arc supporting plate 9, by the improvement to jacking system 5, Hydraulically extensible cylinder 505 starts, and can make to be driven the drive mechanical piston 502 of push plate 506 upward sliding in collection complete 501, this When, it can make mechanical prop 503 that the arc supporting plate 9 being arranged at the top of top plate 8 be pushed to be against the bottom of brick, to facilitate fixed tunnel The brick of metope setting, can make screw thread tune when rotating screw thread adjusting set 74 by the improvement to micromatic setting 7 at the top of road Section set 74 moves up on screw thread 73, at this point, it is small to make fine tuning support rod 75 that fine tuning jacking block 76 be pushed to continue Amplitude pushes top plate 8, and so as to adjust the dynamics that arc supporting plate 9 pushes brick again, the radian of 9 cambered surface of arc supporting plate is 40 ° -50 °, and the area equation of the area of 8 top surface of top plate and 9 bottom surface of arc supporting plate, micromatic setting 7 includes fine tuning piston 71, micro- It adjusts piston 71 to be socketed in trimming groove 6, is fixedly connected at the axle center at 71 top of fine tuning piston with the bottom end of mandril 72, mandril 72 Top through 6 inner wall of trimming groove top and be fixedly connected with the bottom of top plate 8, the side surface of mechanical prop 503 and be located at collection Complete 501 outside offers screw thread 73, and on the mechanical prop 503 and position of corresponding screw thread 73 is socketed with screw thread adjusting set 74, The two sides at 74 top of screw thread adjusting set are fixedly connected to fine tuning support rod 75, and the top of fine tuning support rod 75 is fixedly connected with micro- Jacking block 76 is adjusted, and the top of two fine tuning jacking blocks 76 is overlapped on the two sides of 8 bottom of top plate respectively, since fine tuning piston 71 is socketed in In trimming groove 6, and the diameter for finely tuning piston 71 is greater than the open-topped diameter of trimming groove 6, so as to prevent fine tuning piston 71 are detached from trimming groove 6, by the improvement to running fix device 3, when rotating hand handle 304, and the use of fitted bearing 302, energy Enough make 303 stable rotation of screw rod, at this point, ball nut 305 can drive two fixture blocks 307 to relatively move by vertical connecting shaft, It is matched for clamping tightly the use for the raised pads 315 being arranged on block 314, two fixture blocks 307 can be made to stablize clamping and set in advance on the ground On the bearing block set, stabilizing base 1 is pushed, ball 313 can be made to roll on the ground, at this point, adjusting arc supporting plate 9 to facilitate Position.

Working principle: when brick passes through concrete binding in tunnel, at this time, it may be necessary to support fixation.

Firstly the need of the support device to be moved to the lower section for needing the brick supported, stabilizing base 1 is pushed, due to ball 313 are socketed in arc sleeve in the transverse connecting shaft of grafting, so as to roll ball 313 on the ground, rotate hand handle 304 When, the use of fitted bearing 302 can be such that screw rod 303 rotates, so as to move ball nut 305 on screw rod 303, It is able to drive two fixture blocks 307 by adjustment axis 310 to relatively move, so as to make two fixture blocks 307 push two folders respectively 315 clamping of raised pads on tight block 314 is on the ground on pre-set bearing block.

When position adjusting is accurate, start hydraulically extensible cylinder 505, can make transmission push plate 506 that orientation block 510 be driven to exist Upward sliding in rail 509 is oriented, and is driven push plate 506 and mechanical piston 502 will drive in collection complete 501 by drive block 507 Interior upward sliding, at this point, the arc supporting plate 9 being arranged at the top of top plate 8 can be pushed to move up by mechanical prop 503, thus Arc supporting plate 9 can be made to be against the bottom of brick, and when mechanical piston 502 and mobile mechanical prop 503, anti-side spin can be made 514 push anti-bias movable block 512 to slide in anti-bias set 511, and clips 517 can drive two anti-bias cunnings by stablizing axis 516 Set 515 slides on two anti-bias sets 511 respectively, steady when so as to improve mechanical piston 502 and mobile mechanical prop 503 It is qualitative, so that arc supporting plate 9 is more steadily resisted brick.

It when the insufficient pressure between arc supporting plate 9 and brick, can be finely adjusted, first rotation screw thread adjusting set 74, So as to move up screw thread adjusting set 74 on screw thread 73, at this point, can be pushed up by support rod and fine tuning Block 76 pushes arc supporting plate 9 to continue to move up, so as to increase the pressure between arc supporting plate 9 and brick.

Claims (8)

1. a kind of constructing tunnel top block support device, including stabilizing base (1), it is characterised in that: in the stabilizing base (1) It offers accommodating chamber (2), is provided with running fix device (3) in the accommodating chamber (2), the top of the running fix device (3) Portion extends through the shifting chute (4) that accommodating chamber (2) inner wall two sides of the bottom open up and extends to below, the stabilizing base (1) Top is fixedly connected with jacking system (5), and the internal top of the jacking system (5) offers trimming groove (6), the trimming groove (6) it is provided with micromatic setting (7) in, the top of the micromatic setting (7) is through trimming groove (6) and solid with the bottom of top plate (8) Fixed connection, the bottom of the top plate (8) is overlapped on the bottom of jacking system (5), is fixedly connected with arc at the top of the top plate (8) Shape supporting plate (9).

2. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the movement is fixed Position device (3) includes locating piece (301), and the locating piece (301) is socketed in the middle part of accommodating chamber (2) inner cavity, the locating piece (301) two sides are inlaid with bearing (302), and are plugged with screw rod (303) in two bearings (302), two screw rods (303) opposite one end extends through the two sides of stabilizing base (1) and one end with two hand handles (304) of its outside is fixed respectively It connects, is socketed with ball nut (305) on the screw rod (303) and in accommodating chamber (2), the ball nut (305) Bottom is fixedly connected with the top of vertical connecting shaft (306), and the bottom end of two vertical connecting shafts (306) extends through two shiftings Dynamic slot (4) are simultaneously fixedly connected at the top of two fixture blocks (307) respectively, and four internal right angles of the fixture block (307) are opened It equipped with circular groove (308), is socketed with round block (309) in the circular groove (308), at the axle center of round block (309) bottom and adjusts The top of axis (310) is fixedly connected, the bottom end of the adjustment axis (310) through fixture block (307) bottom and with arc below Shape cover is fixedly connected at the top of (311), and the two sides of arc-shaped cover (311) inner wall are connected by transverse connecting shaft (312), described In arc-shaped cover (311) and it is socketed on transverse connecting shaft (312) and is socketed with ball (313), the bottom of ball (313) side surface The exposed lower section in arc-shaped cover (311) in portion, and two opposite sides of fixture block (307) are fixedly connected to gripping block (314), two The opposite side of a gripping block (314) is fixedly connected to raised pads (315).

3. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the jack-up dress Setting (5) includes collecting complete (501), and complete (501) inner sleeve of collection connects mechanical piston (502), the top of the mechanical piston (502) Portion is fixedly connected with the bottom end of mechanical prop (503), and the top of the mechanical prop (503) is through the top for collecting complete (501) It is overlapped with the bottom of top plate (8), the two sides for collecting complete (501) are fixedly connected to protective cover (504), the protective cover (504) it is fixedly connected at the top of inner wall hydraulically extensible cylinder (505), the free end of the hydraulically extensible cylinder (505) and biography It is fixedly connected at the top of dynamic push plate (506), and two opposite sides of transmission push plate (506) are fixedly connected to drive block (507) side is fixedly connected, and two drive blocks (507) are socketed in respectively collects the driving groove that complete (501) two sides open up (508) in, and the opposite side of two drive blocks (507) is fixedly connected with the two sides of mechanical piston (502) side surface respectively, institute The side for stating protective cover (504) inner wall is fixedly connected with orientation rail (509), slidably connects orientation in the orientation rail (509) The other side of block (510), transmission push plate (506) is fixedly connected with the side of orientation block (510), the collection complete (501) The top of the inner wall and two sides for being located at mechanical prop (503) are fixedly connected to anti-bias set (511), in the anti-bias set (511) It is socketed with anti-bias movable block (512), the top of the anti-bias movable block (512) passes through damping spring (513) and anti-bias set (511) The top movable of inner wall connects, and the bottom of the anti-bias movable block (512) is fixedly connected with the top of anti-side spin (514), and two The bottom end of a anti-side spin (514) is run through the top of anti-bias set (511) and is fixed respectively with the two sides at the top of mechanical piston (502) It connects, is socketed with anti-bias sliding sleeve (515) on the anti-bias set (511), and two opposite sides of anti-bias sliding sleeve (515) pass through Stablize axis (516) to be fixedly connected with the two sides of clips (517) side surface respectively, the clips (517) are fixedly attached to machine On tool pillar (503).

4. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the fine tuning dress Setting (7) includes fine tuning piston (71), and the fine tuning piston (71) is socketed in trimming groove (6), at the top of the fine tuning piston (71) Axle center at be fixedly connected with the bottom end of mandril (72), the top of the mandril (72) through the top of trimming groove (6) inner wall simultaneously Be fixedly connected with the bottom of top plate (8), the side surface of the mechanical prop (503) and be located at collect complete (501) outside open up Have screw thread (73), on the mechanical prop (503) and the position of corresponding screw thread (73) is socketed with screw thread adjusting set (74), the spiral shell Two sides at the top of line adjusting set (74) are fixedly connected to fine tuning support rod (75), and the top of fine tuning support rod (75) is fixed It is connected with fine tuning jacking block (76), and the top of two fine tunings jacking block (76) is overlapped on the two sides of top plate (8) bottom respectively.

5. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the anti-bias set (511) the soft set (518) of limit is fixedly attached on and below anti-bias sliding sleeve (515).

6. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the mechanical branch The bottom end of column (503) is located at the axle center at the top of mechanical piston (502), and the top of mechanical prop (503) is overlapped on top plate (8) The middle position of bottom surface.

7. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the orientation rail (509) height is equal with the height of driving groove (508), and orients the height of rail (509) between 2.5m-3.5m.

8. a kind of constructing tunnel top block support device according to claim 1, it is characterised in that: the arc branch The radian of plate (9) cambered surface is 40 ° -50 °, and the area equation of the area of top plate (8) top surface and arc supporting plate (9) bottom surface.