CN212454431U

CN212454431U - Multifunctional excavation rack for small-section tunnel

Info

Publication number: CN212454431U
Application number: CN202021317361.6U
Authority: CN
Inventors: 谢艺伟; 肖斌; 罗江蔚; 张西朋; 王成; 曹贵银; 蔡宣桂
Original assignee: CCCC First Highway Xiamen Engineering Co Ltd
Current assignee: CCCC First Highway Xiamen Engineering Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-02-02
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a small cross section tunnel is with multi-functional excavation rack belongs to engineering equipment technical field, support the base including workstation and two, two equal fixedly connected with rectangular pipes in both sides around supporting the upper end of base, two intraductal common slides of rectangular pipe have cup jointed same portal frame, a plurality of evenly distributed's locating hole has all been seted up on the pipe wall of two vertical portions of portal frame and rectangular pipe, one side of supporting the base is connected with guiding mechanism, guiding mechanism is connected with one side of portal frame crossbeam, the lower extreme left and right sides of workstation all is through two connecting blocks of bolt fixedly connected with, two connecting blocks all with one side fixed connection of portal frame crossbeam. The utility model discloses, the height of quick change excavation rack in the time of can excavating the small cross section tunnel, the effectual needs that satisfy the interior machinery of tunnel and go out the slag clearance have also saved the time of adjustment equipment excavation rack moreover, and the quick travel excavation rack of also being convenient for simultaneously has reduced construction cost.

Description

Multifunctional excavation rack for small-section tunnel

Technical Field

The utility model relates to an engineering equipment technical field especially relates to a small cross section tunnel is with multi-functional excavation rack.

Background

With the continuous expansion of the scale of the national traffic infrastructure, the number of the road and railway tunnels is continuously increased, the construction task is heavy, at present, a plurality of excavation racks are self-manufactured according to the form of a tunnel excavation construction method for excavating the road and railway tunnel bodies, the excavation racks are mainly divided into a full-section excavation rack, a step method excavation rack, a three-step method excavation rack and the like, but the tunnel surrounding rock conditions are complex and variable, the excavation construction method is frequently changed, the excavation combined racks are assembled on a construction site and are divided into an integral rack and a split rack, and the traditional welding connection mode is replaced by high-strength bolt connection during assembly.

At present, monolithic structure is comparatively fixed, and the rack can't satisfy machinery and slag tap headroom needs, and the efficiency of construction seriously influences, and the excavation rack repacking that different sections used is long simultaneously, though can increase the height of rack when split type rack uses in addition, but need use lifting device, lifting device moves the difficulty in the tunnel to all need dismantle fixing bolt around the hoist and mount, increase construction cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving prior art mesochity structure comparatively fixed, the rack can't satisfy machinery and slag tap headroom needs, the serious influence of efficiency of construction, the excavation rack repacking that different sections used is long simultaneously, though can increase the height of rack when split type rack uses in addition, but need use lifting device, lifting device moves the difficulty in the tunnel, and all need dismantle fixing bolt around the hoist and mount, increase construction cost's problem, and the multi-functional excavation rack is used in little section tunnel that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a small cross section tunnel is with multi-functional excavation rack, includes workstation and two support bases, two the equal fixedly connected with rectangular pipe in both sides around the upper end of support base, two the same portal frame has been cup jointed in the rectangular pipe common slip, a plurality of evenly distributed's locating hole has all been seted up on two vertical portions of portal frame and the pipe wall of rectangular pipe, one side of supporting the base is connected with guiding mechanism, guiding mechanism is connected with one side of portal frame crossbeam, two the lower extreme left and right sides of workstation all is through two connecting blocks of bolt fixedly connected with, two the connecting block all with one side fixed connection of portal frame crossbeam, the mounting groove has been seted up to the lower extreme of supporting the base, the mounting groove in-connection has moving mechanism.

Preferably, guiding mechanism includes and rotates two bracing pieces of connection in supporting base one side, two through the pivot rotate jointly to be connected with the pull rod through the pin on the pole wall of bracing piece, one side of portal frame crossbeam is connected with the ejector pin that two slopes set up, two through the rotation axis rotation the ejector pin is parallel to each other, the bracing piece is kept away from the one end of supporting the base and is passed through the connecting axle and is connected with the lower extreme rotation of ejector pin, one side of supporting the base is rotated through the pivot and is connected with hand-operated hydraulic cylinder, hand-operated hydraulic cylinder's output fixedly connected with connecting rod, the one end of connecting rod is passed through antifriction bearing and one of them the pole.

Preferably, the moving mechanism is including setting up two transfer lines in the mounting groove, two the transfer line is eight style of calligraphy and distributes, the pole wall of transfer line rotates through the round hole and is connected with the dead lever, the both sides fixed connection that the dead lever is relative with the mounting groove, the one end fixedly connected with running roller of transfer line, rectangular through hole has been seted up on the pole wall of transfer line, the rectangular channel has been seted up to the one side that the notch department was kept away from to the mounting groove, rotate through sealed bearing in the rectangular channel and be connected with two-way lead screw, threaded connection has two thread bush, two on the pole wall of two-way lead screw the equal fixedly connected with installation piece of thread bush's lower extreme, one side fixedly connected with pin of installation piece, the pole wall and the rectangular through hole sliding connection of pin, sealed bearing and fixedly connected with carousel are.

Preferably, the common fixedly connected with first backup pad of two vertical portions of portal frame, common fixedly connected with second backup pad on two rectangular pipe walls on the support base, one side of first backup pad and second backup pad all has the layer board through rectangle recess sliding connection, the equal fixedly connected with slider in both sides that the layer board is relative, the spout has all been seted up to the both sides that the rectangle recess is relative, two the spout respectively with two slider sliding connection.

Preferably, the upper end of first backup pad slope fixedly connected with two first fixed plates, two the one end that first backup pad was kept away from to first fixed plate respectively with two vertical portion fixed connection of portal frame, the upper end slope fixedly connected with two second fixed plates of second backup pad, two the one end that the second backup pad was kept away from to the second fixed plate respectively with the pipe wall fixed connection of two rectangular tubes.

Preferably, a plurality of blind holes which are uniformly distributed are formed in the upper end of the workbench and the upper end of the supporting plate.

Compared with the prior art, the utility model provides a small cross section tunnel is with multi-functional excavation rack possesses following beneficial effect:

1. this small cross section tunnel is with multi-functional excavation rack, through the manual hydraulic cylinder that is equipped with, the manual hydraulic cylinder on the support base is pressed simultaneously to the use of tools, manual hydraulic cylinder's telescopic link promotes the bracing piece around the pivot swing, it makes another bracing piece swing to drive the pull rod during the bracing piece swing, and then can promote two ejector pin swings simultaneously according to parallelogram's principle, it rises to promote the portal frame to slide in the rectangular pipe during the ejector pin swing, thereby the height of change rack that can be quick, be convenient for change the height of rack according to the excavation method of difference, the effectual time of adjusting the equipment excavation rack of having saved, construction cost is reduced.

2. This small cross section tunnel is with multi-functional excavation rack, carousel through being equipped with, use the spanner to rotate the carousel, it is rotatory that the carousel rotates and drives two-way lead screw, drive the relative removal of two screw thread sleeve pipes when two-way lead screw is rotatory, it makes the pin removal to drive the installation piece during screw thread sleeve pipe removes, the pin removes and makes the transfer line swing around the dead lever with rectangle through-hole interact, drive running roller and ground contact during the transfer line swing, and then can utilize the running roller to prop up the support base and break away from ground, thereby be convenient for quick removal excavation rack in small cross section tunnel fast, the speed of putting up of excavation rack when having improved tunnel construction.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses, the height of quick change excavation rack in the time of can excavating the small cross section tunnel, the effectual needs that satisfy machinery in the tunnel goes out the slag headroom, has also saved the time of adjustment equipment excavation rack moreover, and the while also is convenient for fast move excavation rack has reduced construction cost.

Drawings

Fig. 1 is a schematic structural view of a multifunctional excavation rack for a small-section tunnel according to the present invention;

fig. 2 is a right sectional view of a support base in the multifunctional excavation rack for a small-section tunnel according to the present invention;

fig. 3 is a top cross-sectional view of a first supporting plate in the multifunctional excavation bench for a small-section tunnel according to the present invention;

fig. 4 is the utility model provides a planar structure sketch map of multi-functional excavation rack is used in small cross section tunnel.

In the figure: 1 workbench, 2 portal frames, 3 rectangular pipes, 4 ejector rods, 5 support rods, 6 pull rods, 7 manual hydraulic cylinders, 8 support bases, 9 positioning holes, 10 second support plates, 11 first support plates, 12 support plates, 13 sliding grooves, 14 sliding blocks, 15 bidirectional screw rods, 16 threaded sleeves, 17 transmission rods, 18 rollers and 19 turntables.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a multifunctional excavation rack for a small-section tunnel comprises a workbench 1 and two supporting bases 8, wherein the front side and the rear side of the upper end of each supporting base 8 are fixedly connected with a rectangular pipe 3, the two rectangular pipes 3 are sleeved with a same portal frame 2 in a common sliding manner, a plurality of uniformly distributed positioning holes 9 are respectively formed in two vertical parts of the portal frame 2 and the pipe wall of the rectangular pipe 3, the diameter of each positioning hole 9 is 4cm, round steel can be conveniently inserted into the positioning holes for locking, the pressure born by an adjusting mechanism is reduced, the stability and the bearing capacity of the excavation rack after adjustment are also increased, one side of each supporting base 8 is connected with an adjusting mechanism, the adjusting mechanism is connected with one side of a cross beam of the portal frame 2, the adjusting mechanism comprises two supporting rods 5 which are rotatably connected with one side of the supporting base 8 through rotating shafts, pull rods 6 are rotatably connected on the rod walls, two support rods 5, a pull rod 6 and a support base 8 jointly form a parallelogram structure, one side of a cross beam of a portal frame 2 is rotatably connected with two obliquely arranged ejector rods 4 through a rotating shaft, the two ejector rods 4 are parallel to each other, one end of the support rod 5, far away from the support base 8, is rotatably connected with the lower ends of the ejector rods 4 through a connecting shaft, one side of the support base 8 is rotatably connected with a manual hydraulic cylinder 7 through a shaft pin, the output end of the manual hydraulic cylinder 7 is fixedly connected with a connecting rod, one end of the connecting rod is rotatably connected with the rod wall of one of the support rods 5 through a rolling bearing, the left side and the right side of the lower end of a workbench 1 are fixedly connected with two connecting blocks through bolts, the two connecting blocks are fixedly connected with one side of the cross beam of the portal frame 2, and, the lower extreme of supporting base 8 has seted up the mounting groove, and the mounting groove in-connection has moving mechanism.

The moving mechanism comprises two transmission rods 17 arranged in an installation groove, the two transmission rods 17 are distributed in a splayed shape, the rod wall of each transmission rod 17 is rotatably connected with a fixed rod through a circular hole, two opposite sides of the fixed rod and the installation groove are fixedly connected, one end of each transmission rod 17 is fixedly connected with a roller 18, a rectangular through hole is formed in the rod wall of each transmission rod 17, one side of the installation groove, far away from the notch, is provided with a rectangular groove, a bidirectional screw rod 15 is rotatably connected in the rectangular groove through a sealing bearing, two threaded sleeves 16 are in threaded connection on the rod wall of the bidirectional screw rod 15, the lower ends of the two threaded sleeves 16 are both fixedly connected with an installation block, one side of the installation block is fixedly connected with a stop lever, the rod wall of the stop lever is in sliding connection with the rectangular through hole, one end of the bidirectional screw rod 15 penetrates through, a second supporting plate 10 is fixedly connected to the pipe walls of the two rectangular pipes 3 on the supporting base 8 together, one sides of the first supporting plate 11 and the second supporting plate 10 are connected with a supporting plate 12 through a rectangular groove in a sliding manner, the supporting plate 12 can increase the width and the degree of the first supporting plate 11 and the second supporting plate 10, so that the excavation rack can be contacted with the side wall of the tunnel, two opposite sides of the supporting plate 12 are fixedly connected with sliding blocks 14, two opposite sides of the rectangular groove are respectively provided with sliding grooves 13, the two sliding grooves 13 are respectively connected with the two sliding blocks 14 in a sliding manner, the upper end of the first supporting plate 11 is fixedly connected with two first fixing plates in an inclined manner, one ends of the two first fixing plates, far away from the first supporting plate 11, are respectively fixedly connected with two vertical parts of the portal frame 2, the upper end of the second supporting plate 10 is fixedly connected with two second fixing plates in an inclined manner, one, a plurality of evenly distributed blind holes are formed in the upper end of the workbench 1 and the upper end of the supporting plate 12, plug-in type guardrails are convenient to install through the blind holes, and workers working on a protective rack can be protected.

In the utility model, when the height of the rack needs to be increased by the method for excavating the tunnel, the hand-operated hydraulic cylinder 7 on the supporting base 8 is pressed simultaneously by using a tool, the telescopic rod of the hand-operated hydraulic cylinder 7 pushes the supporting rod 5 to swing around the rotating shaft, the supporting rod 5 drives the pull rod 6 to swing so as to push the other supporting rod 5 to swing simultaneously according to the parallelogram principle, the portal frame 2 is pushed to slide and rise in the rectangular tube 3 when the ejector rod 4 swings, thereby the height of the rack can be changed rapidly, the height of the rack can be changed conveniently according to different excavating methods, the time for adjusting and assembling the excavating rack is effectively saved, the construction cost is reduced, round steel is inserted from the positioning holes 9 on the rectangular tube 3 and the portal frame 2 for locking and positioning when the rack is determined, when the rack needs to be moved, the rotary table 19 is rotated by using a, the carousel 19 rotates and drives two-way lead screw 15 rotatory, two-way lead screw 15 drives the relative removal of two screw sleeve 16 when rotatory, screw sleeve 16 drives the installation piece when removing and makes the pin remove, the pin removes and makes the transfer line 17 swing around the dead lever with rectangle through-hole interact, drive running roller 18 and ground contact when transfer line 17 swings, and then can utilize running roller 18 will support base 8 and prop and break away from ground, thereby be convenient for quick removal excavation rack in small cross section tunnel fast, excavation rack's speed of buildding when having improved tunnel construction.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A multifunctional excavation rack for a small-section tunnel comprises a workbench (1) and two supporting bases (8), and is characterized in that the front side and the rear side of the upper end of each of the two supporting bases (8) are fixedly connected with a rectangular pipe (3), the two rectangular pipes (3) are sleeved with the same portal frame (2) in a sliding manner, a plurality of uniformly distributed positioning holes (9) are formed in the two vertical parts of the portal frame (2) and the pipe wall of each rectangular pipe (3), one side of each of the supporting bases (8) is connected with an adjusting mechanism, the adjusting mechanism is connected with one side of a cross beam of the portal frame (2), the left side and the right side of the lower end of the workbench (1) are fixedly connected with two connecting blocks through bolts, the two connecting blocks are fixedly connected with one side of the cross beam of the portal frame (2), and the lower end of each of the supporting base (8) is, and a moving mechanism is connected in the mounting groove.

2. The multifunctional excavation bench for small-section tunnels according to claim 1, the adjusting mechanism comprises two supporting rods (5) which are rotatably connected with one side of a supporting base (8) through a rotating shaft, the rod walls of the two supporting rods (5) are jointly and rotatably connected with a pull rod (6) through pins, one side of the cross beam of the portal frame (2) is rotatably connected with two obliquely arranged ejector rods (4) through a rotating shaft, the two ejector rods (4) are parallel to each other, one end of the support rod (5) far away from the support base (8) is rotatably connected with the lower end of the ejector rod (4) through a connecting shaft, one side of the supporting base (8) is rotationally connected with a manual hydraulic cylinder (7) through a shaft pin, the output end of the manual hydraulic cylinder (7) is fixedly connected with a connecting rod, and one end of the connecting rod is rotatably connected with the rod wall of one of the supporting rods (5) through a rolling bearing.

3. The multifunctional excavation bench for the small-section tunnel according to claim 1, wherein the moving mechanism comprises two transmission rods (17) arranged in a mounting groove, the two transmission rods (17) are distributed in a splayed shape, a fixed rod is rotatably connected to a rod wall of each transmission rod (17) through a circular hole, the fixed rod is fixedly connected to two opposite sides of the mounting groove, a roller (18) is fixedly connected to one end of each transmission rod (17), a rectangular through hole is formed in the rod wall of each transmission rod (17), a rectangular groove is formed in one side of the mounting groove, which is far away from the groove opening, a bidirectional screw rod (15) is rotatably connected to the rectangular groove through a sealing bearing, two threaded sleeves (16) are threadedly connected to the rod wall of the bidirectional screw rod (15), and mounting blocks are fixedly connected to the lower ends of the two threaded sleeves (16), one side fixedly connected with pin of installation piece, the pole wall and the rectangle through-hole sliding connection of pin, sealed bearing is passed and fixedly connected with carousel (19) to the one end of two-way lead screw (15).

4. The multifunctional excavation rack for the small-section tunnel according to claim 1, characterized in that two vertical portions of the portal frame (2) are fixedly connected with a first supporting plate (11) together, two rectangular tubes (3) on the supporting base (8) are fixedly connected with a second supporting plate (10) together, one side of each of the first supporting plate (11) and the second supporting plate (10) is connected with a supporting plate (12) through a rectangular groove in a sliding manner, two opposite sides of the supporting plate (12) are fixedly connected with sliding blocks (14), two opposite sides of the rectangular groove are provided with sliding grooves (13), and the two sliding grooves (13) are respectively connected with the two sliding blocks (14) in a sliding manner.

5. The multifunctional excavation rack for the small-section tunnel according to claim 4, wherein two first fixing plates are fixedly connected to the upper end of the first supporting plate (11) in an inclined manner, one ends of the two first fixing plates, which are far away from the first supporting plate (11), are fixedly connected to two vertical portions of the portal frame (2), two second fixing plates are fixedly connected to the upper end of the second supporting plate (10) in an inclined manner, and one ends of the two second fixing plates, which are far away from the second supporting plate (10), are fixedly connected to the tube walls of the two rectangular tubes (3).

6. The multifunctional excavation rack for the small-section tunnel according to claim 4, characterized in that the upper end of the workbench (1) and the upper end of the supporting plate (12) are provided with a plurality of uniformly distributed blind holes.