CN215256226U

CN215256226U - Auxiliary device for mounting steel arch frame of small-section tunnel

Info

Publication number: CN215256226U
Application number: CN202121810256.0U
Authority: CN
Inventors: 杨洋; 高文甫; 李海龙; 刘阳; 岳栋涛; 王彦涛; 万超; 王先水; 张宁波; 王柯; 李菠; 徐文兵
Original assignee: Sinohydro Bureau 3 Co Ltd
Current assignee: Sinohydro Bureau 3 Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-12-21
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a small section tunnel steel arch installation auxiliary device, which comprises an underframe, a lifting mechanism used for driving the steel arch to lift and a clamp holder used for clamping the steel arch, wherein the lifting mechanism comprises a support rod arranged on the underframe, a lifting rod arranged in the support rod and a lifting driver used for driving the lifting rod to move up and down; the lifting driver comprises two vertical mounting plates, a driving rotary table, a driven rotary table and a limiter, wherein the driving rotary table, the driven rotary table and the limiter are all arranged between the two vertical mounting plates, a traction rope is wound on the driven rotary table, and the end part of the traction rope, far away from the driven rotary table, is fixedly connected with the bottom of the lifting rod through a fixed pulley. The utility model has the advantages of simple structure and reasonable design and small, can realize the installation of steel bow member in the small cross section tunnel through setting up this auxiliary device, need not a plurality of staff and lift the steel bow member, labour saving and time saving, the efficiency of construction is high, and has effectively increased usable workspace in the small cross section tunnel, and the security is good.

Description

Auxiliary device for mounting steel arch frame of small-section tunnel

Technical Field

The utility model belongs to the technical field of the steel bow member installation, concretely relates to small cross section tunnel steel bow member installation auxiliary device.

Background

With the rapid development of the traffic field in China, more and more tunnel engineering is developed and utilized, and various tunnels with complex geological types emerge continuously. The construction method can effectively reduce excavation risks, ensure the stability of a tunnel face and reduce the surface subsidence caused by excavation compared with the step method. When the step method is adopted for construction, the tunnel is generally divided into different small sections for fractional excavation, the exposed area of a tunnel face is reduced, a steel arch is erected in time for primary support, wherein the erection of the steel arch is the most important ring in the primary support of the tunnel, and the position over-underrun and the inclination of the arch are strictly controlled in the process of erecting the steel arch to ensure the tunnel construction quality. At present, the installation of the steel arch in the tunnel is mainly carried out by combining a trolley and manpower, namely, the trolley is dragged to the front of a tunnel face through a large machine, the steel arch is placed on the trolley and then is fixedly installed by manpower, for the complex tunnel in a soft stratum, the tunnel needs to be divided into different small sections for excavation due to unstable surrounding rocks of the tunnel face, core soil is reserved in the front of the tunnel face, and the trolley cannot be close to the tunnel face due to the existence of the core soil and cannot be used for installing the arch by utilizing the trolley; consequently, to the tunnel of many pilot tunnels excavation, generally adopt artifical mode to carry out the steel bow member installation alone, there is following problem when adopting this kind of traditional steel bow member mounting means to carry out the steel bow member installation: firstly, the weight of the steel arch is generally 200-300 kg, 6-7 workers are needed to completely support the arch, and as the number of the workers is large and the coordination is difficult, a large amount of time is needed to adjust the arch in the installation process of the steel arch, so that time and labor are wasted, and the construction efficiency is low; secondly, when the tunnel is divided into a plurality of pilot tunnels for excavation, the working space is reduced, a large number of workers are squeezed in a narrow space, accidents easily occur, in addition, the steel arch frames need to be welded with connecting ribs and reinforcing mesh in the installation process, and a certain safety distance needs to be kept between the steel arch frames and welding points in the welding process, but as the working space is small, more workers are needed, the positions of the workers are close to the welding points, the splashed welding slag is likely to burn the workers, and the safety is poor; and thirdly, when mechanical equipment is adopted to lift and install the steel arch frame, the mechanical equipment is difficult to place in the small-section tunnel due to the large size of the mechanical equipment, and the construction of workers in the small-section tunnel is inconvenient, so that the construction efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed at, provide a little section tunnel steel bow member installation auxiliary device, its simple structure, reasonable in design and small realize the installation of steel bow member in the little section tunnel, labour saving and time saving, security are good, and work efficiency is high, and the practicality is strong.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a small cross section tunnel steel bow member installation auxiliary device which characterized in that: the device comprises an underframe, a lifting mechanism which is arranged on the underframe and used for driving a steel arch to lift, and a clamp holder which is arranged on the lifting mechanism and used for clamping the steel arch;

the lifting mechanism comprises a support rod arranged on the underframe, a lifting rod arranged in the support rod and in sliding fit with the support rod, and a lifting driver arranged on the support rod and used for driving the lifting rod to move up and down;

lifting drive includes that two parallels lay at the vertical mounting panel of bracing piece both sides, all set up initiative carousel between two vertical mounting panels and with initiative carousel complex driven turntable, and be used for the restriction initiative carousel pivoted stopper, it has the haulage rope to coil on the driven turntable, the haulage rope is kept away from driven turntable's tip passes through the bottom fixed connection of fixed pulley and lifter.

Foretell small cross section tunnel steel bow member installation auxiliary device which characterized in that: the chassis includes that a plurality of all set up the stiffening rod in the bracing piece lower part, and is a plurality of the stiffening rod is evenly laid along the circumferencial direction of bracing piece, the bottom surface of stiffening rod flushes with the bottom surface of bracing piece mutually.

Foretell small cross section tunnel steel bow member installation auxiliary device which characterized in that: the clamp holder is a semicircular clamp holder, the opening of the semicircular clamp holder faces upwards, and the bottom surface of the semicircular clamp holder is fixedly connected with the top surface of the lifting rod.

Foretell small cross section tunnel steel bow member installation auxiliary device which characterized in that: the driving turntable comprises a driving shaft arranged between two vertical mounting plates and two driving gears which are sleeved on the driving shaft, and the driving shaft is in running fit with the vertical mounting plates;

driven turntable establishes the driven gear on the driven shaft including the driven shaft and two equal cover that set up between two vertical mounting panels, driven shaft and vertical mounting panel normal running fit, driving gear and driven gear meshing.

Foretell small cross section tunnel steel bow member installation auxiliary device which characterized in that: two vertical mounting panels are stretched out respectively at the both ends of driving shaft, the one end of driving shaft is provided with the connecting rod, the tip that the driving shaft was kept away from to the connecting rod is provided with hand handle.

Foretell small cross section tunnel steel bow member installation auxiliary device which characterized in that: the stopper is including setting up the installation axle and the cover on vertical mounting panel and establishing the epaxial limiting plate of installation to and all set up on the limiting plate and be located the handle and the spacing arch at limiting plate both ends respectively, limiting plate and installation axle normal running fit, spacing protruding tooth's socket cooperation with the driving gear.

Foretell small cross section tunnel steel bow member installation auxiliary device which characterized in that: the lifting rod is characterized in that a mounting hole for mounting the lifting rod is formed in the supporting rod, the fixed pulley is mounted at the top of the supporting rod, one end of the traction rope is fixedly connected with the bottom of the lifting rod, and the other end of the traction rope extends out of the mounting hole and is wound on the driven shaft through the fixed pulley.

Compared with the prior art, the utility model has the following advantage:

1. the utility model has the advantages of simple structure and reasonable design and small, can realize the installation of steel bow member in the small cross section tunnel through setting up this auxiliary device, need not a plurality of staff and lift the steel bow member, labour saving and time saving, the efficiency of construction is high, and has effectively increased usable workspace in the small cross section tunnel, and the security is good.

2. The utility model drives the steel arch frame to lift by arranging the lifting driver, the lifting driver comprises a support rod and a lifting rod which is arranged in the support rod and is in sliding fit with the support rod, and the lifting rod extends out of the support rod when the steel arch frame is lifted; after the steel arch frame is installed, the lifting rod is retracted into the supporting rod, so that the size of the auxiliary device is effectively reduced, and the auxiliary device is convenient to move and practical in a small-section tunnel.

3. The utility model discloses a set up the stopper and rise at the steel bow member and carry on spacingly to the initiative carousel of lift driver after targetting in place, avoid taking place to remove at the lifter, the staff of being convenient for installs the steel bow member on the inner wall in small cross section tunnel.

To sum up, the utility model has the advantages of simple structure and reasonable design and small, can realize the installation of steel bow member in the small cross section tunnel through setting up this auxiliary device, need not a plurality of staff and lift the steel bow member, labour saving and time saving, the efficiency of construction is high, and has effectively increased usable workspace in the small cross section tunnel, and the security is good.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a usage state diagram of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is the utility model discloses vertical mounting panel, initiative carousel, driven turntable and stopper's connection structure sketch map when stopper is spacing to the initiative carousel.

Description of reference numerals:

1-reinforcing rods; 2-steel arch centering; 3-a gripper;

4, supporting rods; 5, a lifting rod; 6, vertical mounting plates;

7, a traction rope; 8-fixed pulley; 9-driving shaft;

10-a drive gear; 11-a driven shaft; 12-a driven gear;

13-mounting the shaft; 14-a limiting plate; 15-a handle;

16-a limiting bulge; 17-a connecting rod; 18-hand crank handle.

Detailed Description

As shown in fig. 1 to 4, the present invention comprises a bottom frame, a lifting mechanism arranged on the bottom frame and used for driving the steel arch frame 2 to lift, and a clamp holder 3 arranged on the lifting mechanism and used for clamping the steel arch frame 2;

the lifting mechanism comprises a support rod 4 arranged on the underframe, a lifting rod 5 arranged in the support rod 4 and in sliding fit with the support rod 4, and a lifting driver arranged on the support rod 4 and used for driving the lifting rod 5 to move up and down;

lifting drive includes that two parallels lay at the vertical mounting panel 6 of 4 both sides of bracing piece, all set up initiative carousel between two vertical mounting panels 6 and with initiative carousel complex driven turntable, and be used for the restriction initiative carousel pivoted stopper, driven turntable is last to be rolled up there is haulage rope 7, haulage rope 7 keeps away from driven turntable's tip passes through the bottom fixed connection of fixed pulley 8 with lifter 5.

As shown in fig. 1 and fig. 2, in this embodiment, it should be noted that the steel arch 2 is a semicircular steel arch, the steel arch 2 is formed by sequentially connecting a first connecting section 2-1, a second connecting section 2-2 and a third connecting section 2-3, the center of the second connecting section 2-2 is the center of the steel arch 2, a clamp 3 is welded on the top of the lifting rod 5, the second connecting section 2-2 is conveniently placed on the clamp 3 by arranging the clamp 3, so that the clamp 3 clamps the steel arch 2, the lifting mechanism conveniently drives the clamp 3 to ascend to further drive the steel arch 2 on the clamp 3, until the top of the steel arch 2 is attached to the top of the small-section tunnel, so that a worker can conveniently fix the steel arch 2; after the steel arch frame 2 is installed, the lifting rod 5 can be retracted into the supporting rod 4, so that the size of the auxiliary device is effectively reduced, the auxiliary device is convenient to move in a small-section tunnel, and the movement is convenient; the initiative carousel of lift driver rotates and drives driven turntable and rotate, driven turntable rotates and makes haulage rope 7 convolute and loosen driven shaft 11, and then realizes the rising and the decline of lifter 5 to it is right after lifter 5 rises to target in place through setting up the stopper initiative carousel carries on spacingly, avoids taking place to remove at lifter 5, and the staff of being convenient for installs steel bow member 2 on the inner wall in little section tunnel.

As shown in fig. 1, in this embodiment, the base frame includes a plurality of reinforcing bars 1 disposed at the lower portion of a support rod 4, the plurality of reinforcing bars 1 are uniformly arranged along the circumferential direction of the support rod 4, and the bottom surfaces of the reinforcing bars 1 are flush with the bottom surface of the support rod 4.

In this embodiment, in actual use, the number of the reinforcing rods 1 is preferably four, the four reinforcing rods 1 are uniformly arranged along the circumferential direction of the supporting rod 4, and the supporting rod 4 is reinforced by the reinforcing rods 1, so that the stability of the auxiliary device is effectively improved.

As shown in fig. 1, in this embodiment, the holder 3 is a semicircular holder, an opening of the semicircular holder faces upward, and a bottom surface of the semicircular holder is fixedly connected with a top surface of the lifting rod 5.

In this embodiment, during practical use, the center of the steel arch frame 2 is located on the holder 3, so that the steel arch frame 2 is in a balanced state on the holder 3, and the safety is high.

As shown in fig. 1 to 4, in this embodiment, the driving turntable includes a driving shaft 9 disposed between two vertical mounting plates 6 and two driving gears 10 both sleeved on the driving shaft 9, and the driving shaft 9 is rotatably engaged with the vertical mounting plates 6;

driven turntable establishes driven gear 12 on driven shaft 11 including the driven shaft 11 and two equal cover that set up between two vertical mounting panels 6, driven shaft 11 and vertical mounting panel 6 normal running fit, driving gear 10 and driven gear 12 meshing.

In this embodiment, two driving gear 10 is located the both ends of driving shaft 9 respectively, and driving gear 10 and driving shaft 9 fixed connection set up the driving shaft mounting hole that supplies driving shaft 9 to pass on the vertical mounting panel 6, two driven gear 12 is located the both ends of driven shaft 11 respectively, and driven gear 12 and driven shaft 11 fixed connection set up the driven shaft mounting hole that supplies driven shaft 11 to pass on the vertical mounting panel 6, all be provided with wear-resisting cover between driving shaft mounting hole and the driving shaft 9 to and between driven shaft mounting hole and the driven shaft 11, be convenient for driving shaft 9 and driven shaft 11 and vertical mounting panel 6 normal running fit.

In the embodiment, the driving gear 10 is engaged with the driven gear 12, when the steel arch 2 needs to be moved to the installation height, the middle part of the steel arch 2 is installed on the holder 3, the hand-cranking handle 18 rotates anticlockwise to drive the driving shaft 9 to rotate anticlockwise, the driving shaft 9 rotates anticlockwise to drive the driving gear 10 to rotate anticlockwise, the driving gear 10 rotates anticlockwise to drive the driven gear 12 to rotate clockwise, the driven gear 12 rotates clockwise to drive the driven shaft 11 to rotate clockwise, the driven shaft 11 rotates clockwise to wind the traction rope 7 on the driven shaft 11, and then the lifting rod 5 moves upwards until the top of the steel arch 2 is attached to the top of the small-section tunnel, so that the steel arch 2 moves to the installation height; need withdraw lifter 5 to bracing piece 4 in after the installation of steel bow member 2 is accomplished, clockwise rotation hand handle 18, hand handle 18 clockwise rotates and drives driving shaft 9 clockwise, driving shaft 9 clockwise rotates and drives driving gear 10 clockwise, driving gear 10 clockwise rotates and drives driven gear 12 anticlockwise, driven gear 12 anticlockwise drives driven shaft 11 anticlockwise, driven shaft 11 anticlockwise makes haulage rope 7 on the driven shaft 11 loosen, lifter 5 descends until lifter 5 withdraws to bracing piece 4 in at its self action of gravity, accomplish the decline of bracing piece 4, and the operation is convenient, save time, the efficiency of construction has effectively been improved.

As shown in fig. 3, in this embodiment, two ends of the driving shaft 9 respectively extend out of the two vertical mounting plates 6, one end of the driving shaft 9 is provided with a connecting rod 17, and the end of the connecting rod 17 far away from the driving shaft 9 is provided with a hand crank handle 18.

In this embodiment, the driving shaft 9 is driven to rotate by the staff through the hand-cranking handle 18 by arranging the hand-cranking handle 18.

As shown in fig. 3 and 4, in this embodiment, the stopper includes an installation shaft 13 disposed on the vertical mounting plate 6, a limiting plate 14 disposed on the installation shaft 13, and a handle 15 and a limiting protrusion 16 both disposed on the limiting plate 14 and respectively located at two ends of the limiting plate 14, the limiting plate 14 is rotationally matched with the installation shaft 13, and the limiting protrusion 16 is matched with the tooth space of the driving gear 10.

In this embodiment, in actual use, the limiter is located between the two vertical mounting plates 6, the mounting shaft 13 is fixedly arranged on the vertical mounting plates 6, the mounting shaft 13 and the vertical mounting plates 6 are arranged perpendicularly, the number of the limiting protrusions 16 is preferably two, the two limiting protrusions 16 are respectively located at two ends of the limiting plate 14, and the two limiting protrusions 16 are arranged to facilitate a worker to rotate the handle 15 clockwise and counterclockwise to limit the driving gear 10; the limiting protrusions 16 are matched with tooth grooves of the driving gear 10, when the steel arch 2 rises to the installation height, the handle 15 is rotated clockwise or anticlockwise, the limiting protrusions 16 are clamped in the tooth grooves of the driving gear 10, the driving gear 10 cannot rotate continuously, and limiting of the driving gear 10 is achieved.

In this embodiment, a mounting hole for installing the lifting rod 5 is formed in the supporting rod 4, the fixed pulley 8 is installed at the top of the supporting rod 4, one end of the traction rope 7 is fixedly connected with the bottom of the lifting rod 5, and the other end of the traction rope 7 extends out of the mounting hole and is wound on the driven shaft 11 through the fixed pulley 8.

In this embodiment, haulage rope 7 is taken and is established on fixed pulley 8, if haulage rope 7 directly convolutes on driven shaft 11, haulage rope 7 is direct and the contact of 4 tops of bracing piece, and at the ascending in-process that descends of lifter 5, takes place the friction between haulage rope 7 and the bracing piece 4, very easily causes haulage rope 7's wearing and tearing, can protect haulage rope 7 through setting up fixed pulley 8, uses manpower sparingly simultaneously.

In this embodiment, the pulling rope 7 is preferably a twisted pair wire in practical use.

When the utility model is used, firstly, the first connecting section 2-1, the second connecting section 2-2 and the third connecting section 2-3 are connected in sequence to form the steel arch frame 2, and the auxiliary device is moved to the installation position of the steel arch frame, so that the central line of the lifting rod 5 is superposed with the central line of the small-section tunnel; secondly, the middle part of a second connecting section 2-2 of the steel arch frame 2 is arranged on the clamp holder 3, the hand handle 18 is rotated anticlockwise to drive the driving shaft 9 to rotate anticlockwise, the driving shaft 9 is rotated anticlockwise to drive the driving gear 10 to rotate anticlockwise, the driving gear 10 is rotated anticlockwise to drive the driven gear 12 to rotate clockwise, the driven gear 12 is rotated clockwise to drive the driven shaft 11 to rotate clockwise, the driven shaft 11 rotates clockwise to wind the traction rope 7 on the driven shaft 11, the lifting rod 5 is further moved upwards until the top of the steel arch frame 2 is jointed with the top of the small-section tunnel, the steel arch frame 2 is lifted to the installation height, the handle 15 is rotated clockwise or anticlockwise to clamp the limiting protrusion 16 in the tooth groove of the driving gear 10, the driving gear 10 can not rotate continuously, and the limiting of the driving gear 10 is realized, the worker fixes the steel arch frame 2 in the small-section tunnel; finally, after finishing the installation of the steel arch 2, the handle 15 is rotated anticlockwise or clockwise, the limiting protrusion 16 is separated from the tooth space of the driving gear 10, the hand handle 18 is rotated clockwise to drive the driving shaft 9 to rotate clockwise, the driving shaft 9 is rotated clockwise to drive the driving gear 10 to rotate clockwise, the driving gear 10 is rotated clockwise to drive the driven gear 12 to rotate anticlockwise, the driven gear 12 rotates anticlockwise to drive the driven shaft 11 to rotate anticlockwise, the driven shaft 11 rotates anticlockwise to enable the traction rope 7 on the driven shaft 11 to be loosened, the lifting rod 5 descends under the action of gravity of the lifting rod 5 per se until the lifting rod 5 is withdrawn into the supporting rod 4, and the installation of the steel arch 2 is finished once. The utility model has the advantages of simple structure and reasonable design and small, can realize the installation of steel bow member in the small cross section tunnel through setting up this auxiliary device, need not a plurality of staff and lift the steel bow member, labour saving and time saving, the efficiency of construction is high, and has effectively increased usable workspace in the small cross section tunnel, and the security is good.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses in technical scheme's the protection scope.

Claims

1. The utility model provides a small cross section tunnel steel bow member installation auxiliary device which characterized in that: the device comprises an underframe, a lifting mechanism which is arranged on the underframe and used for driving a steel arch (2) to lift, and a clamp holder (3) which is arranged on the lifting mechanism and used for clamping the steel arch (2);

the lifting mechanism comprises a supporting rod (4) arranged on the bottom frame, a lifting rod (5) which is arranged in the supporting rod (4) and is in sliding fit with the supporting rod (4), and a lifting driver which is arranged on the supporting rod (4) and is used for driving the lifting rod (5) to move up and down;

lifting drive includes that two parallels lay in vertical mounting panel (6) of bracing piece (4) both sides, all set up initiative carousel between two vertical mounting panel (6) and with initiative carousel complex driven turntable, and be used for the restriction initiative carousel pivoted stopper, it has haulage rope (7) to coil on the driven turntable, haulage rope (7) are kept away from driven turntable's tip passes through the bottom fixed connection of fixed pulley (8) and lifter (5).

2. A small cross-section tunnel steel arch installation auxiliary device according to claim 1, wherein: the chassis comprises a plurality of reinforcing rods (1) which are arranged on the lower portion of the supporting rod (4), the reinforcing rods (1) are uniformly distributed along the circumferential direction of the supporting rod (4), and the bottom surfaces of the reinforcing rods (1) are flush with the bottom surfaces of the supporting rod (4).

3. A small cross-section tunnel steel arch installation auxiliary device according to claim 1, wherein: the clamp holder (3) is a semicircular clamp holder, the opening of the semicircular clamp holder faces upwards, and the bottom surface of the semicircular clamp holder is fixedly connected with the top surface of the lifting rod (5).

4. A small cross-section tunnel steel arch installation auxiliary device according to claim 1, wherein: the driving turntable comprises a driving shaft (9) arranged between two vertical mounting plates (6) and two driving gears (10) which are sleeved on the driving shaft (9), and the driving shaft (9) is in running fit with the vertical mounting plates (6);

driven turntable establishes driven gear (12) on driven shaft (11) including driven shaft (11) and two all that set up between two vertical mounting panel (6), driven shaft (11) and vertical mounting panel (6) normal running fit, driving gear (10) and driven gear (12) meshing.

5. The installation auxiliary device of the steel arch of the small-section tunnel according to claim 4, wherein: two vertical mounting panels (6) stretch out respectively at the both ends of driving shaft (9), the one end of driving shaft (9) is provided with connecting rod (17), the tip that driving shaft (9) were kept away from in connecting rod (17) is provided with hand handle (18).

6. The installation auxiliary device of the steel arch of the small-section tunnel according to claim 4, wherein: stopper establish limiting plate (14) on installation axle (13) including setting up installation axle (13) and the cover on vertical mounting panel (6) to and all set up on limiting plate (14) and be located handle (15) and spacing arch (16) at limiting plate (14) both ends respectively, limiting plate (14) and installation axle (13) normal running fit, the tooth's socket cooperation of spacing arch (16) and driving gear (10).

7. The installation auxiliary device of the steel arch of the small-section tunnel according to claim 4, wherein: the utility model discloses a traction rope, including bracing piece (4), bracing piece (4) are last to be seted up the mounting hole that supplies lifter (5) to install, the top at bracing piece (4) is installed in fixed pulley (8), the one end of haulage rope (7) and the bottom fixed connection of lifter (5), the other end of haulage rope (7) stretches out the mounting hole and twines on driven shaft (11) through fixed pulley (8).