CN220167952U - Inverted arch synchronous lining trolley - Google Patents

Abstract

The utility model discloses an inverted arch synchronous lining trolley, and aims to solve the problem that the middle section of the existing inverted arch lining trolley is easy to operate unstably when the existing inverted arch lining trolley moves forward. The device comprises a plurality of stepping trolleys which are correspondingly arranged at the middle section of the main girder trestle; the step trolley comprises two upright posts which are correspondingly arranged on two sides of the girder trestle and can correspondingly move along the girder arms of the girder trestle, two groove frames which are fixedly arranged on two sides of the upright posts and are perpendicular to the girder trestle, pulleys which are correspondingly contacted with the bottom of the girder trestle and are arranged at positions corresponding to two end sides of the groove frames, and telescopic side supports are respectively arranged on two sides of the groove frames, wherein the outer contours of the groove frames are matched with the outer contours of the girder trestle. The inverted arch lining trolley has the advantages of stable operation, high stepping reliability and the like.

Description

Inverted arch synchronous lining trolley

Technical Field

The utility model relates to the technical field of TBM construction equipment, in particular to an inverted arch synchronous lining trolley.

Background

The inverted arch is a reverse arch structure arranged at the bottom of the tunnel for improving the stress condition of the supporting structure at the upper part of the tunnel, so that the stratum pressure at the upper part of the tunnel or the load on the pavement can be effectively transmitted to the ground, and the reaction force transmitted by the stratum at the lower part of the tunnel can be effectively resisted.

The TBM fully-called full-face rock tunnel boring machine is large tunnel boring equipment integrating the functions of boring, slag discharging, guiding, supporting, ventilation, dust prevention and the like, can simultaneously carry out the construction procedures of boring, supporting, slag discharging and the like and continuously operates, has the advantages of high boring speed, environmental protection, high comprehensive benefit and the like, and can realize the rapid construction of long tunnels with complicated geographical features which are difficult to realize by the traditional boring and blasting method.

The inventor knows that the inverted arch synchronous lining trolley for TBM construction and the inverted arch synchronous lining construction method (CN 114233331A) can realize synchronous TBM tunneling and inverted arch lining, greatly shorten the construction period and effectively improve the operation efficiency of inverted arch construction in TBM construction. The device comprises a trestle main frame assembly provided with a travelling mechanism, a front climbing rail assembly arranged at the front end of the trestle main frame assembly, a rear climbing rail assembly arranged at the rear end of the trestle main frame assembly, and an inverted arch template system arranged on the trestle main frame assembly; the walking mechanism comprises a walking support leg assembly, a stepping support leg assembly and a stepping transposition support leg assembly.

However, in the process of implementing the technical solution in the embodiment of the present utility model, the present inventors have found that at least the following technical problems exist in the above technology: because the inverted arch lining trolley is hundreds of meters long, and the stepping support legs for driving the trolley to move forward are arranged at the front end and the rear end of the trolley main beam, namely, the forward power source is arranged at the two ends of the trolley, uneven stress in the middle of the inverted arch lining trolley is easily caused, and the phenomenon of unstable operation and even unbalance is easily caused.

The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art.

Disclosure of Invention

In view of at least one of the above technical problems, the present disclosure provides an inverted arch synchronous lining trolley, which aims to solve the problem that the middle section of the existing inverted arch lining trolley is easy to generate unstable operation when the existing inverted arch lining trolley moves forward.

According to one aspect of the disclosure, an inverted arch synchronous lining trolley is provided, which comprises a main beam trestle, stepping assemblies correspondingly arranged on two sides of the main beam trestle, and a plurality of stepping trolleys correspondingly arranged in the middle section of the main beam trestle; the step trolley comprises two upright posts which are correspondingly arranged on two sides of the girder trestle and can correspondingly move along the girder arms of the girder trestle, two groove frames which are fixedly arranged on two sides of the upright posts and are perpendicular to the girder trestle, pulleys which are correspondingly contacted with the bottom of the girder trestle and are arranged at positions corresponding to two end sides of the groove frames, and telescopic side supports are respectively arranged on two sides of the groove frames, wherein the outer contours of the groove frames are matched with the outer contours of the girder trestle.

In some embodiments of the disclosure, two ends of the upright post are respectively provided with a travelling wheel, and the two travelling wheels are oppositely arranged; and guide rails matched with the travelling wheels are correspondingly arranged at the top and the bottom of the girder trestle respectively.

In some embodiments of the disclosure, a driving motor in corresponding transmission connection with the corresponding travelling wheel is arranged at the top of the upright post.

In some embodiments of the present disclosure, the distance between the two traveling wheels is greater than a height of the beam arm of the main beam trestle, and the height does not exceed the height of the guide rail.

In some embodiments of the disclosure, the pulley is mated to the rail, and the pulley top height is horizontally collinear with the road wheel top height corresponding to the column bottom.

In some embodiments of the disclosure, a cross beam is correspondingly connected between the bottoms of the two upright posts.

In some embodiments of the present disclosure, the side support includes a fixed section and a movable section correspondingly embedded within the fixed section and horizontally movable along the fixed section.

In some embodiments of the disclosure, the same sides of the fixed end and the movable section are respectively and correspondingly provided with an ear plate seat, and a telescopic oil cylinder for driving the movable section to correspondingly move along the fixed section is arranged between the ear plate seats.

In some embodiments of the disclosure, the side supports are ribbed between the brackets.

One or more technical solutions provided in the embodiments of the present utility model at least have any one of the following technical effects or advantages:

1. the stepping trolleys arranged at the middle section of the girder trestle can play a role in bearing the weight of the middle part of the trolley when the inverted arch lining trolley moves forward, so that the middle part of the trolley is ensured to walk stably, and the problem of unsmooth middle part running caused by overlong trolley is avoided; on the other hand, when the side supports on two sides of the stepping trolley extend out and are propped against the tunnel wall, the side supports can also provide a certain supporting force for the trolley, so that the balance of the trolley in the running process is ensured.

2. The driving motor at the top of the upright post can provide walking power for walking wheels, so that the stepping trolley can move forward along the beam arm of the main beam trestle of the trolley after the inverted arch lining trolley moves forward, and further the stepping trolley can be ensured to continue to provide reliable and stable support for the middle part of the trolley when the trolley moves forward next time, and the moving stability in the trolley is ensured.

3. The guide rail matched with the pulley and the travelling wheel at the top of the upright post can provide a set track for the movement of the pulley body, so that the stability of the movement of the upright post along the girder stack bridge arm and the movement of the girder trestle along the pulley of the step trolley is ensured, and the blocking of the movement of the trolley caused by the deviation is avoided.

Drawings

Fig. 1 is a schematic structural view of an inverted arch lining trolley according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a stepping car according to an embodiment of the utility model.

Fig. 3 is a schematic cross-sectional view of a stepping car according to an embodiment of the utility model.

In the above figures, 1 is a main beam trestle, 2 is a slope rail, 3 is a telescopic supporting leg, 4 is a stepping supporting leg, 5 is a stepping oil cylinder, 6 is a stand column, 61 is a travelling wheel, 62 is a driving motor, 63 is a guide rail, 7 is a groove frame, 8 is a pulley, 9 is a side support, 91 is a fixed section, 92 is a movable section, and 93 is a telescopic oil cylinder.

Detailed Description

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "connected," "coupled," and "connected," as used herein, unless specifically indicated otherwise, are intended to encompass both direct and indirect connections (couplings).

In order to better understand the technical scheme of the present utility model, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, an existing inverted arch lining trolley mainly comprises a main girder trestle 1, slope rails 2 arranged at the front end and the rear end of the main girder trestle 1, four-rail three-wire system rails paved on the main girder trestle 1, and turnouts for connecting the four-rail three-wire system rails and the slope rails, so that when TBM material transportation is normally carried out above the main girder trestle, inverted arch lining operation is carried out below the main girder trestle. After the current inverted arch lining is constructed, the trolley is required to move forwards along the tunnel, so that stepping assemblies are arranged on two sides of the inverted arch lining trolley, each stepping assembly comprises a telescopic supporting leg 3, a stepping supporting leg 4 capable of sliding along a girder arm of the trolley and a stepping oil cylinder 5 connected between the stepping supporting leg and the girder of the trolley, a sleeper is prevented below the stepping supporting leg 4 during stepping, the telescopic supporting leg 3 is recovered, the stepping oil cylinder is stretched out after the stepping supporting leg 4 is accepted by contact with the sleeper, and the trolley girder is driven to move forwards by driving of the stepping oil cylinder. And because step landing leg and step cylinder lay in the both ends of platform truck girder landing stage in this example, provide the driving force of girder landing stage antedisplacement, and invert lining cutting platform truck length 237 meters, lead to the platform truck middle part to lack the atress from this, easily make the platform truck middle part take place the skew, can't guarantee that the platform truck operation is stable.

Therefore, this example discloses a synchronous lining cutting platform truck of inverted arch, this platform truck still includes a plurality of step-by-step dollies of locating girder landing stage middle section, and three step-by-step dollies are laid altogether to the interval in girder landing stage middle section in this example, and specific see fig. 1-2, this step-by-step dolly includes stand 6, fixes locate stand 6 both sides and with two cell shelves 7 that girder landing stage 1 set up perpendicularly, locate pulley 8 of cell shelf 7 both ends side, and cell shelf 7 both sides are equipped with scalable side support 9 respectively.

The stand is used for realizing swing joint between step-by-step dolly and girder landing stage to after girder landing stage step forward, step-by-step dolly can follow girder landing stage forward the same distance, still can provide effectual support when so that girder landing stage next step by step, and this stand still can realize the connection supporting effect to cell frame 7, and then drives the synchronous forward of cell frame. Referring to fig. 1-2 specifically, the upright post 6 is made of channel steel, the height of the upright post is matched with Liang Beigao degrees of the girder trestle, in order to facilitate the step trolley to move forward along the girder arms at two sides of the girder of the trolley, two upright posts are symmetrically arranged at two sides of the girder trestle, and walking wheels 61 are respectively arranged at two ends of each upright post. In this example, steel plates are welded at two end sides of the upright post respectively, and axle seats are welded at two opposite side surfaces of the steel plates for installing the travelling wheels 61, so that the two opposite travelling wheels 61 can slide along the top end surfaces and the bottom end surfaces of the girder stack bridge arms respectively and advance, and the upright post 6 is hung at the outer sides of the two girder arms of the girder stack bridge through the travelling wheels 61, and the travelling wheels can operate stably through cooperation between the two travelling wheels. In this example, for the setting of stand 6 is stable, set up the crossbeam between the bottom of two stand 6, realize through the crossbeam that to two stand in girder landing stage both sides roof beam arm department spacing, avoid the stand to break away from the roof beam arm department, reach the purpose that two stand stable nest just can follow the roof beam arm outside girder stack bridge arm.

In order to drive the upright post 6 and further drive the trough frame 7 to move forward, in this example, a driving motor 62 is arranged at the top of the upright post 6, an output shaft of the driving motor 62 is in transmission connection with a travelling wheel 61 at the top of the upright post 6, in this specific example, chain transmission is adopted between the driving motor and the driving motor, and in other embodiments, gear transmission is adopted between the output shaft of the driving motor and the travelling wheel at the top of the upright post. Thus, the movement of the step carriage along the main beam bridge is accomplished by the drive motor 62.

In order to ensure the stability of the upright post 6 moving along the two side beam arms of the main beam trestle, in this embodiment, referring to fig. 3, guide rails 63 matched with the travelling wheels 61 are respectively arranged at the top and bottom of the main beam trestle 1, so that the travelling wheels 61 at two ends of the upright post can respectively and correspondingly run along the side guide rails thereof, on one hand, the arrangement of the guide rails 63 can ensure the accurate running of the upright posts at two sides along the corresponding beam arms of the main beam trestle, and plays a role in guiding; on the other hand, through the embedding effect between walking wheel and the guide rail, can avoid the stand to break away from the roof beam arm of girder landing stage, play spacing effect.

Referring to fig. 2-3, the groove frame 7 is fixedly arranged at two sides of the upright posts and is firmly connected with the upright posts, wherein the groove profile of the groove frame is matched with the outer profile of the main beam trestle so as to support the main beam trestle by the groove frame, and the main body Liang Zhanqiao can move forward in the groove frame, thereby achieving the supporting effect on the main beam in the middle of the trolley and achieving the effect of stabilizing the front of the trolley. Considering that the girder trestle moves forward in the groove of the groove frame 7, a certain friction force is generated between the girder trestle and the inner wall of the groove frame to prevent the trolley from moving forward, in this embodiment, referring to fig. 2, pulleys 8 are respectively arranged on the outer sides of the groove frames on both sides and at both ends of each side groove frame, and the effect of reducing friction force between the girder trestle and the pulley 8 is achieved through sliding contact between the pulleys 8 and the girder trestle. Specifically, in this embodiment, the horizontal transverse plate is welded at the corresponding end of the groove frame, the supporting rib is arranged below the transverse plate to strengthen the stress of the horizontal transverse plate, the pulley seat for setting the pulley is fixedly arranged at the upper plate surface of the horizontal transverse plate, and the pulley needs to bear the larger gravity of the girder trestle, so that in this example, the rib plates connected with the horizontal transverse plate are welded at the outer sides of the pulley seat respectively to ensure the stability of the pulley seat. Wherein, in order to avoid producing the interference between the walking wheel 61 of pulley 8 and stand bottom, lead to the atress uneven distribution, consequently, set up the top highly unanimity of the walking wheel of pulley top and stand bottom in this example, the two level collineation reaches the girder landing stage when stepping up from this, and walking wheel and pulley atress jointly realize the support to the girder landing stage.

Only rely on cell tower 7 to the girder landing stage support stabilization effect limited, consequently set up telescopic side support 9 respectively in the both sides of cell tower 7, through the contact of side support 9 and tunnel wall, reach the spacing effect to cell tower 7, avoid rocking of cell tower 7, and then realize girder landing stage steady operation's purpose in the cell tower. Specifically, referring to fig. 2, the side support 9 includes a fixed section 91 and a movable section 92 correspondingly embedded in the fixed section and horizontally movable along the fixed section. The fixed section 91 is horizontally arranged, one end of the fixed section is welded and fixed with the groove frame 7, the fixed section is of a cavity structure, and the inner cavity of the fixed section is used for filling and embedding the movable section 92, so that the outer contour of the movable section 92 is matched with the inner contour of the fixed section 91, and the movable section 92 can slide along the cavity of the fixed section 91 horizontally.

To achieve control of the extension of the movable segments, in this example, referring to fig. 2, ear plate seats are provided on top of the fixed segment 91 and the movable segment 92, respectively, and in other embodiments, on the same side of the rest of the fixed segment and the movable segment. The telescopic oil cylinder 93 is connected between the two lug plate seats through bolts, and accordingly the side support 9 correspondingly stretches out or recovers according to the needs through the driving effect of the telescopic oil cylinder 93 on the movable section. In addition, in order to ensure the horizontal stability of the side supports, in this embodiment, rib plates are arranged between the vertical side walls of the side supports corresponding to the groove frames, so as to achieve the purpose of reinforcing the connection of the side supports.

When the inverted arch lining trolley is stepped, the telescopic support legs are required to be recovered, the telescopic oil cylinders 93 are driven to extend, the side supports are propped against the tunnel wall of the tunnel, the stepping trolley is relatively fixed, when the trolley stepping oil cylinders extend out of the driving trolley to move forwards for stepping, the stepping trolley plays a supporting role on a main beam trestle, the main beam trestle slides relatively with the bottom travelling wheels of the stand column of the stepping trolley and pulleys on two sides of the groove frame, and the main beam trestle stably moves forwards in the groove frame of the stepping trolley. After the trolley steps to the designated position, the side support of the stepping trolley is recovered, and a driving motor at the top of the upright post is started, so that the stepping trolley moves forward along the beam arm of the main beam trestle, returns to the corresponding position of the stepping trolley, which is initially positioned in the middle of the main beam trestle, and waits for the next trolley step. Wherein, in the forward movement process of the trolley, the trolley girder trestle moves forward in the groove frame of the step trolley, and at the moment, the contact still exists between the travelling wheel at the top of the stand column of the step trolley and the top guide rail of the girder trestle, so that friction is generated, and the forward movement of the trolley is not facilitated. Therefore, in this embodiment, the distance between the two traveling wheels is set to be greater than the beam arm of the main beam trestle by a certain height, and the height does not exceed the height of the guide rail. Therefore, when the trolley is retracted along with the telescopic support legs to reduce the height, and then the stepping trolley is correspondingly contacted with the tunnel wall, the travelling wheel part at the top of the upright post is separated from the top guide rail of the main beam trestle, so that friction between the trolley and the tunnel wall is reduced, and the travelling wheel is not separated from the guide rail because the gap of the travelling wheel separating from the guide rail is smaller than the height of the guide rail, so that the travelling wheel is not separated from the guide rail, further the travelling wheel of the stepping trolley can be ensured to follow the track, and the separation problem is avoided. In addition, when the trolley performs inverted arch construction, namely does not perform stepping, the walking wheels and pulleys at the lower parts of the stand columns are separated from the corresponding guide rails under the action of gravity by the stepping trolley, so that the friction force of the stepping trolley when moving along the main beam trestle is reduced.

While certain preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (9)

1. The inverted arch synchronous lining trolley comprises a main beam trestle and stepping assemblies correspondingly arranged on two sides of the main beam trestle, and is characterized by further comprising a plurality of stepping trolleys correspondingly arranged in the middle section of the main beam trestle; the step trolley comprises two upright posts which are correspondingly arranged on two sides of the girder trestle and can correspondingly move along the girder arms of the girder trestle, two groove frames which are fixedly arranged on two sides of the upright posts and are perpendicular to the girder trestle, pulleys which are correspondingly contacted with the bottom of the girder trestle and are arranged at positions corresponding to two end sides of the groove frames, and telescopic side supports are respectively arranged on two sides of the groove frames, wherein the outer contours of the groove frames are matched with the outer contours of the girder trestle.

2. The inverted arch synchronous lining trolley according to claim 1, wherein the two ends of the upright post are respectively provided with travelling wheels, and the two travelling wheels are oppositely arranged; and guide rails matched with the travelling wheels are correspondingly arranged at the top and the bottom of the girder trestle respectively.

3. The inverted arch synchronous lining trolley according to claim 2, wherein the top of the upright post is provided with a driving motor in corresponding transmission connection with the corresponding travelling wheel.

4. The inverted arch synchronous lining trolley of claim 2, wherein the spacing between the two traveling wheels is greater than the height of the beam arms of the main beam trestle and the height does not exceed the height of the guide rail.

5. The inverted arch synchronized lining trolley of claim 2, wherein the pulleys are mated with the rails and the pulley top ends are horizontally collinear with the travel wheel top ends corresponding to the column bottom ends.

6. The inverted arch synchronous lining trolley according to claim 1, wherein a cross beam is correspondingly connected between the bottoms of the two upright posts.

7. The inverted arch synchronous lining trolley of claim 1, wherein the side supports comprise a fixed section and a movable section correspondingly embedded in the fixed section and horizontally movable along the fixed section.

8. The inverted arch synchronous lining trolley according to claim 7, wherein the same sides of the fixed section and the movable section are respectively provided with an ear plate seat, and a telescopic oil cylinder for driving the movable section to correspondingly move along the fixed section is arranged between the ear plate seats.

9. The inverted arch synchronous lining trolley of claim 1, wherein the side supports are provided with ribs between the brackets.