CN215907870U - Tunnel construction auxiliary trolley - Google Patents

Abstract

The utility model provides a tunnel construction auxiliary trolley, which comprises a trolley frame, a main beam group and a plurality of auxiliary trolley frames, wherein the trolley frame is provided with two main beam groups; the inverted arch short side wall template is provided with a first molding surface; the first template unit comprises an air bag arranged between two inverted arch short side wall templates, an inverted arch filling end mold connected with the two inverted arch short side wall templates in a sliding mode and an air pump connected with the air bag, wherein two ends of the air bag are connected with the extending end of the main beam group and the inverted arch filling end mold respectively; the second template unit comprises an inverted arch end mold and a driving mechanism, and the driving mechanism can drive the inverted arch end mold to move in the height direction and/or the first direction; this supplementary platform truck of tunnel construction simple structure and convenient operation.

Description

Tunnel construction auxiliary trolley

Technical Field

The utility model relates to the technical field of tunnel construction equipment, in particular to a tunnel construction auxiliary trolley.

Background

In the tunnel engineering construction, according to design and standard test requirements, layered pouring must be carried out between the inverted arch and the inverted arch filling, so that the inverted arch and the inverted arch filling need to be molded by adopting corresponding tooling equipment.

In the process of filling and layered pouring of the inverted arch and the inverted arch, firstly, inverted arch pouring is carried out, and then inverted arch filling pouring is carried out. Specifically, during construction, firstly, installing an inverted arch circumferential template and an inverted arch end template, and then, pouring an inverted arch; after the concrete of the inverted arch reaches initial setting, dismantling the annular template of the inverted arch, installing an inverted arch filling end template and an inverted arch filling template (such as an inverted arch filling side template, a central ditch template and the like), and then pouring the inverted arch, wherein if the inverted arch filling template does not need to be arranged, the installation of the inverted arch filling template can be cancelled. In addition, the inverted arch circumferential formwork can be divided into a full-ring type and a middle-open type according to the arrangement mode, so that when the inverted arch pouring construction is carried out, which arrangement mode is adopted by the inverted arch circumferential formwork needs to be considered. Although the inverted arch formed by the full-ring type inverted arch circumferential template is high in quality, when the full-ring type inverted arch circumferential template is used for construction, the upward floating force of concrete in the inverted arch pouring process easily causes deformation of the inverted arch circumferential template, and the size of the inverted arch has large deviation; although the annular template of the inverted arch with the opened middle can avoid buoyancy to a great extent, the forming control difficulty of the arc section in the middle of the inverted arch is increased, the vibration difficulty of the concrete at the open middle part is increased, and the middle vibration inevitably causes the concrete at the inverted arches at two sides and the short side wall to slide and collapse, so that the forming quality of the inverted arch is poor.

At present, the inverted arch and the layered pouring construction of the inverted arch filling mainly adopt two types of tooling equipment, wherein one type of tooling equipment is an assembled template, and the other type of tooling equipment is a construction trolley provided with the template; no matter which kind of tooling equipment is adopted, the type of the inverted arch circumferential template can be adjusted according to the construction requirement. When the assembled template is used for molding the inverted arch and the inverted arch filling, although the production cost can be better saved, workers are required to install, position and splice various templates, and a plurality of workers are required to perform cooperative processing simultaneously, so that the problems of low efficiency, low precision of template installation positions, high labor intensity of the workers and the like exist; when the construction trolley (such as a self-propelled movable inverted arch trestle) is adopted to install various templates, the installation of various templates is controlled by a control system of the trolley and assisted by manual assistance, so that the efficiency of construction by the construction trolley is far higher than that of construction by a spliced template, and the installation position precision of various templates is higher, however, the self-propelled movable inverted arch trestle needs to be provided with a special hoisting traction mechanism to move towards the template due to the large volume and heavy weight of the existing inverted arch circumferential template, so that the whole weight of the self-propelled movable inverted arch trestle is large, the structure is complex and the price is high, in addition, the inverted arch end mold cannot move along with the trolley, and the inverted arch end mold needs to be hoisted to a specified position by hoisting equipment (such as a crane) during installation and then is fixedly connected with the inverted arch circumferential template by a worker, this makes when the working space is less, can increase the hoist and mount degree of difficulty of hoisting equipment to invert end mould, makes hoisting equipment can't use and need artifically carry invert end mould even.

Disclosure of Invention

In order to solve the above problems, the present invention provides a tunnel construction auxiliary trolley which has a simple structure, is convenient to operate, has a high degree of automation, and is light in weight.

In order to achieve the main object of the present invention, the present invention provides a tunnel construction auxiliary trolley, which comprises a frame, a traveling system, two inverted arch short side wall formworks, a first formwork unit and a second formwork unit, wherein the frame comprises a portal frame and two main beam sets, the two main beam sets are installed on the portal frame, the main beam sets extend along a first direction, the traveling system comprises traveling wheel sets, the traveling wheel sets are installed at the bottom of the portal frame, one inverted arch short side wall formwork is installed on one main beam set, the inverted arch short side wall formwork extends along the first direction, the inverted arch short side wall formwork has a first molding surface, the first formwork unit comprises an air bag, an inverted arch filling end formwork and an air pump, the air bag is installed between the two inverted arch short side wall formworks, a first end of the air bag is fixed at an extending end of the main beam set, a second end of the air bag is fixedly connected with the inverted arch filling end formwork, the inverted arch filling end formwork is slidably connected with the two inverted arch short side wall formworks in the first direction respectively, the air pump can inflate or exhaust the air bag, the air bag is unfolded or folded in the first direction, in the unfolding position of the air bag, the inverted arch filling end die is located at the portal, the air bag is abutted to the two inverted arch short side wall templates, the bottom surface of the air bag forms a second forming surface, the second forming surface and the first forming surface form an inverted arch shaped surface, in the folding position of the air bag, the inverted arch filling end die is located at the extending end of the main beam group, the second template unit comprises an inverted arch end die and a driving mechanism, the inverted arch end die is located below the main beam group, the driving mechanism is installed on the frame, and the driving mechanism can drive the inverted arch end die to move in the height direction of the frame and/or in the first direction.

Therefore, the tunnel auxiliary construction trolley can assist the inverted arch and the inverted arch to be filled and formed in the inverted arch and inverted arch filling layered pouring construction process, and the construction time of filling the inverted arch and the inverted arch is shortened. When the inverted arch is required to be poured, the tunnel construction auxiliary trolley is moved to a designated position, the driving unit drives the inverted arch end mold to move to a first design position, the air pump is controlled to inflate the air bag, so that the air bag is unfolded and forces the inverted arch filling end mold to move to a second design position (for example, the inverted arch filling end mold is adjacent to the poured inverted arch filling end mold), and the air bag can expand to a design shape under the action of the air pump, so that an inverted arch cavity is enclosed by the air bag, the two inverted arch short side wall templates and the primary support together, and the inverted arch is formed after concrete is poured into the inverted arch cavity; after the concrete of invert reached initial set, the control air pump bleeds to the gasbag to make the gasbag draw in, fill the end mould with the invert and move to the third design position (like the tip of the invert after initial set) to the end that stretches out of girder group, thereby make invert fill end mould, two invert short side wall templates and invert enclose into invert filling die cavity jointly, fill the die cavity into the concrete in order to fill the invert and carry out the shaping to invert filling die cavity afterwards. Moreover, through the structural design of the tunnel construction auxiliary trolley, a temporary drainage ditch can be formed between the formed inverted arch and the inverted arch filling, so that a temporary drainage effect is achieved in the tunnel construction process; in addition, by designing the first template unit, the first template unit can play a role in assisting the forming of the inverted arch without manually installing an arc-shaped template at the middle section of the inverted arch by workers, the weight of the tunnel construction auxiliary trolley can be greatly reduced, the structure of the tunnel construction auxiliary trolley can be simplified, and the manufacturing cost of the tunnel construction auxiliary trolley can be reduced; through designing the second template unit for the removal of invert end membrane need not workman's manual handling, also need not with the help of lifting device, thereby makes the installation of invert end mould more convenient.

Preferably, the first molding surface and the second molding surface are both cambered surfaces, and two sides of the second molding surface are respectively tangent to the two first molding surfaces.

Therefore, after the inverted arch is formed, the curvature of the top surface of the inverted arch can meet the design requirement, and the stress performance of the inverted arch is guaranteed to meet the design requirement.

In another preferred scheme, the airbag is provided with a plurality of inflation cavities, the inflation cavities are distributed along the first direction, and the ventilation ports of the inflation cavities are respectively communicated with the air pump.

It is from top to bottom, through the structural design to the gasbag, can enough guarantee the roughness of second forming surface to improve the shaping quality and the shaping precision of invert, make the gasbag can deflate fast again, draw in.

Another preferred scheme is that each inverted arch low-profile wall formwork is provided with a set of guide assembly on the face facing the first formwork unit, the guide assembly extends along the first direction, the first formwork unit further comprises two pulley modules, one pulley module is connected between one end of the inverted arch filling end formwork and a set of guide assembly, and at least one pulley module can drive the inverted arch filling end formwork to slide along the guide assembly.

It is from top to bottom visible, above-mentioned design makes the coaster module can drive the inverted arch and fills the end mould and remove along the direction subassembly for the inverted arch is filled the end mould and can be reliably and remove between second design position and third design position fast, and supplementary gasbag expandes and draws in.

The further scheme is that the guide assembly comprises a guide rail and a rack, the pulley module comprises a pulley, a gear set and a motor, the pulley is connected with the guide rail in a sliding mode along the extending direction of the guide rail, the inverted arch filling end die, the gear set and the motor are all installed on the pulley, the gear set is meshed with the rack, and the motor can drive the gear set to transmit.

It is from top to bottom visible, above-mentioned structural design can prevent that the coaster module from filling the end mould at the drive invert and removing the in-process phenomenon of skidding appearing for the invert is filled the end mould and can be reliably, steadily removed between second design position and third design position, and guarantees that the invert fills the template and can accurately remove to second design position or third design position.

Another preferred scheme is that the tunnel construction auxiliary trolley further comprises two sets of jacking units, one set of jacking unit is installed in one inverted arch short side wall formwork, each jacking unit comprises a telescopic rod, each telescopic rod is parallel to the height direction, an opening is formed in the first molding surface of the inverted arch short side wall formwork, and the first end of each telescopic rod can penetrate through the opening and extend out of the position below the first molding surface.

It is thus clear that the jacking unit can assist the short side wall template of invert to carry out the drawing of patterns after the concrete intensity that fills when the invert reaches the driving requirement to make the supplementary platform truck of tunnel construction can easily start the antedisplacement.

The further scheme is that the jacking unit further comprises a roller, the roller is connected with the first end of a telescopic rod, and the telescopic rod can drive the roller to penetrate through the opening from the inside of the inverted arch low-side wall formwork and extend out of the lower portion of the first molding surface.

It can be seen from above that, set up the gyro wheel on the telescopic link and reduce the frictional force that the tunnel construction auxiliary trolley antedisplacement in-process received to prevent invert short side wall template to collide with the injury or collide with the damage invert and/or invert packing better at tunnel construction auxiliary trolley antedisplacement in-process, thereby fill invert and play the guard action.

Another preferred scheme is that a support and a balancing weight are arranged on the portal frame, the support is connected with the portal frame, and the balancing weight is placed in the support.

It is from top to bottom visible, the balancing weight can cooperate the weight of frame and the short side wall template of inverted arch to resist the upward buoyancy that the inverted arch concreting in-process concrete produced the gasbag, and the balancing weight can eliminate the influence that the weight of girder group and the short side wall template of inverted arch brought the supplementary platform truck of tunnel construction to prevent that the supplementary platform truck of tunnel construction from taking place to empty.

Another preferred scheme is that actuating mechanism includes first drive assembly and second drive assembly, first drive assembly includes first hydraulic telescoping rod, guide rail set spare and carriage, first hydraulic telescoping rod installs on the girder group, guide rail set spare is connected between girder group and carriage, guide rail set spare is on a parallel with the first direction, first hydraulic telescoping rod can drive the carriage and move in the first direction, second drive assembly includes the second hydraulic telescoping rod, the second hydraulic telescoping rod is connected between carriage and inverted arch end mould, the second hydraulic telescoping rod can drive inverted arch end mould and move in the direction of height.

From top to bottom, through the structural design to actuating mechanism for actuating structure can steadily, reliably drive invert end mould and move on the first direction and/or direction of height, and then guarantees that invert end mould can accurately move to first design position.

Another preferred scheme is that the tunnel construction auxiliary trolley further comprises supporting legs, wherein the supporting legs are installed at the bottom of the main beam group, the main beam group is located at the bottom of the portal frame, and the supporting legs are telescopic supporting legs.

It is from top to bottom visible, the landing leg can support between girder group and ground after tunnel construction auxiliary trolley removes to the assigned position to prevent tunnel construction auxiliary trolley and take place to empty in the course of the work.

The further scheme is that the frame further comprises two groups of pull rod sets, one group of pull rod sets is respectively connected with one inverted arch short side wall template and the portal frame, the pull rod sets are located above the inverted arch short side wall template, and the traveling system further comprises a driving unit which drives traveling wheels of the traveling wheel sets to rotate.

Therefore, the main beam group is in a suspension state relative to the portal due to the arrangement of the pull rod group, the overall stability of the frame is ensured, and the weight of the tunnel construction auxiliary trolley can be greatly reduced; and the driving unit is additionally arranged on the traveling system, so that the tunnel construction auxiliary trolley can move more conveniently.

Drawings

Fig. 1 is a schematic structural view of a tunnel auxiliary construction trolley according to an embodiment of the present invention, with components of the first omitted part.

Fig. 2 is a schematic structural view of the tunnel auxiliary construction trolley of the embodiment of the utility model with second omitted components.

Fig. 3 is a reference view showing a first construction state of the tunnel auxiliary construction trolley according to the embodiment of the present invention.

Fig. 4 is a schematic structural view of an airbag of an embodiment of the tunnel auxiliary construction trolley of the utility model.

Fig. 5 is an enlarged view at B in fig. 3.

Fig. 6 is a schematic structural view of a trolley module of an embodiment of the tunnel auxiliary construction trolley of the utility model, with parts of components omitted.

Fig. 7 is an enlarged view at C in fig. 3.

Fig. 8 is a schematic structural view of a third omitted part of the tunnel auxiliary construction trolley according to the embodiment of the present invention.

Fig. 9 is an enlarged view at a in fig. 1.

Fig. 10 is an enlarged view at D in fig. 8.

Fig. 11 is a reference view of a first construction state from another perspective of the embodiment of the tunnel auxiliary construction trolley according to the present invention.

Fig. 12 is a second construction state reference view of the tunnel auxiliary construction trolley according to the embodiment of the present invention.

Fig. 13 is a reference view of a second construction state from another perspective of the embodiment of the tunnel auxiliary construction trolley according to the present invention.

Fig. 14 is a third construction state reference view of the tunnel auxiliary construction trolley according to the embodiment of the present invention.

Fig. 15 is a fourth construction state reference view of the tunnel auxiliary construction trolley according to the embodiment of the present invention.

The utility model is further explained with reference to the drawings and the embodiments.

Detailed Description

Embodiments of a tunnel construction auxiliary trolley

Referring to fig. 1 and 2, a tunnel construction auxiliary cart 100 is used to mold an inverted arch and an inverted arch filling of a tunnel in cooperation with an existing mechanism during tunnel construction. The tunnel construction auxiliary trolley 100 comprises a frame 1, a walking system 2, an inverted arch low side wall formwork 3, a first formwork unit 4, a jacking unit 5 and supporting legs 6.

The frame 1 comprises a portal 11, a main beam set 12 and a pull rod set 13. The number of the main beam groups 12 is two, and the two main beam groups 12 are fixedly arranged on the gantry 11. The main beam set 12 extends from the gantry 11 towards the outside of the gantry 11 in a first direction, and the two main beam sets 12 are distributed along a second direction, so that the two main beam sets 12 are arranged side by side, wherein the second direction is perpendicular to the first direction.

The traveling system 2 includes a traveling wheel group 21 and a driving unit 22, the traveling wheel group 21 includes a plurality of traveling wheels, and the plurality of traveling wheels are all installed at the bottom of the gantry 11 so that the frame 1 can move. The driving unit 22 preferably includes a second motor 221, a chain 222 and a chain wheel set, the second motor 221 is mounted on the gantry 11, the chain wheel set includes a first chain wheel and a second chain wheel, the first chain wheel is fixedly connected with a motor shaft of the second motor 221, the second chain wheel is coaxially disposed with a traveling wheel and is fixedly connected with the traveling wheel, and the chain 222 is engaged between the first chain wheel and the second chain wheel, so that the driving unit 22 can drive the traveling wheel to rotate, so as to realize the movement of the driving frame 1.

The number of the inverted arch short side wall templates 3 is two, the two inverted arch short side wall templates 3 are approximately arranged in a mirror symmetry mode, and one inverted arch short side wall template 3 is fixedly installed on one group of main beam groups 12. Short limit wall template 3 of invert is used for cooperating just supporting structure 105 and first template unit 4 to take shape to the invert, and the short limit wall template 3 of invert still is used for cooperating invert and first template unit 4 to fill the invert and take shape. Wherein the inverted arch short side wall formwork 3 extends along a first direction, and the inverted arch short side wall formwork 3 is provided with a first molding surface 31 and a third molding surface 32.

The first molding surface 31 is substantially in an arc shape, and the first molding surface 31 is used for matching with the primary support structure 105 to mold two ends of the inverted arch and the short side wall part of the inverted arch. Of course, the first molding surface 31 may also be set into two intersecting curved surfaces that are not to be cut according to design requirements, that is, the intersection of the two curved surfaces is bent; or the first molding surface 31 can be set into a plane and an arc surface according to the design requirement, and the plane and the arc surface are intersected but not tangent, namely the intersection of the plane and the arc surface is bent; or the first molding surface 31 can be arranged into two intersecting planes according to design requirements, and the intersection of the two planes is arranged in a bending way.

The third molding surface 32 is used for molding the matching inverted arch and the inverted arch filling by the first template unit 4. The third molding surface 32 is a plane, and the third molding surface 32 is preferably perpendicular to the placing surface of the tunnel construction assisting trolley 100, that is, when the placing surface is a horizontal surface, the third molding surface 32 is a vertical surface.

Referring to fig. 5, the guide assembly 33 is disposed on the third molding surface 32, in this embodiment, the guide assembly 33 includes a guide rail 331 and a rack 332, the guide rail 331 and the rack 332 both extend along the first direction, and the guide rail 331 and the rack 332 are respectively fixedly mounted on the third molding surface 32. Wherein the teeth of the racks 332 on the two third molding surfaces 32 are disposed opposite to each other.

Preferably, the main beam group 12 is located at the bottom of the portal 11, that is, the main beam group 12 is disposed as close to the bottom of the portal 11 as possible, so that the volume and height of the inverted arch low-profile wall formwork 3 can be minimized as much as possible, thereby better reducing the overall weight of the tunnel construction auxiliary trolley 100. Further, a group of the girder groups 12 passes through a corresponding inverted arch short-side wall form 3, thereby not only playing a role of optimizing an operation space of the tunnel construction auxiliary trolley 100, but also playing a role of enhancing strength and rigidity of the inverted arch short-side wall form 3.

The number of the pull rod sets 13 of the frame 1 is two, the two pull rod sets 13 correspond to the two inverted arch short side wall formworks one by one, the pull rod sets 13 are located above the inverted arch short side wall formwork 3, and two ends of each pull rod of the pull rod sets 13 are respectively fixedly connected with the corresponding inverted arch short side wall formwork 3 and the portal frame 11. The arrangement of the pull rod set 13 enables the main beam set 12 to be in a suspension state relative to the portal 11, so that the overall stability of the frame 1 is ensured, and the weight of the tunnel construction auxiliary trolley 100 can be greatly reduced.

Referring to fig. 3 and 4, the first template unit 4 includes an air bag 41, an inverted arch filling end mold 42, a connection plate 43, a pulley module 44, a connection pipe 45, and an air pump. The air bag 41 is positioned between the two inverted arch low side wall templates 3, a first end of the air bag 41 is fixedly arranged at the extending end of the main beam group 12 through a connecting plate 43, and a second end of the air bag 41 is fixedly connected with an inverted arch filling end template 42. The airbag 41 preferably has a plurality of inflation chambers 411, the plurality of inflation chambers 411 being distributed along the first direction, and each inflation chamber 411 having a venting port 4111.

The inverted arch filling end forms 42 are connected with the guide assembly 33 through the trolley modules 44, so that the trolley modules 44 can drive the inverted arch filling end forms 42 to respectively slide relative to the two inverted arch short side wall formworks 3 in the first direction. The number of trolley modules 44 is two, one trolley module 44 is connected between the first end of the inverted arch filling end mold 42 and the set of guide assemblies 33, and preferably, two trolley modules 44 can simultaneously drive the inverted arch filling end to slide along the guide assemblies 33, thereby enabling the inverted arch filling end mold 42 to reliably and rapidly move between the second design position and the third design position and assisting the air cylinder in unfolding and folding. Wherein, as shown in fig. 8, the second design position refers to a position where the inverted arch filling end mold 42 is moved in the first direction to the gantry 11 to an extreme position, such as a second design position where the inverted arch filling end mold 42 may abut the shaped inverted arch filling 101; as shown in fig. 11, the third design position refers to a position where the inverted arch filling end mold 42 is moved to the connection plate 43 to the limit position in the first direction, and as in the third design position, the inverted arch filling end mold 42 is located at the end face of the just-poured and just-set inverted arch 104 to mold the inverted arch filling to be poured in cooperation with the just-poured and just-set inverted arch 104 and the third molding surfaces 32 of the two inverted arch short side wall mold plates 3.

Referring to fig. 5 and 6, the trolley module 44 includes a trolley 441, a gear set 442, and a motor 443, the trolley 441 is slidably coupled to the guide rail 331 along an extending direction of the guide rail 331, and one end of the inverted arch filling end mold 42 is fixedly coupled to one of the trolleys 441. The gear set 442 includes a first gear 4421, a second gear 4422, a third gear 4423 and a gear shaft 4424, the axial direction of the gear shaft 4424 is parallel to the height direction of the carriage 1, and the gear shaft 4424 is rotatably connected with the pulley 441 around its own axis, wherein the height direction, the first direction and the second direction are mutually perpendicular to each other two by two. The first gear 4421 and the second gear 4422 are fixedly mounted on the gear shaft 4424 such that the first gear 4421, the second gear 4422 and the gear shaft 4424 can maintain synchronous rotation. In addition, the number of the first gears 4421 is preferably two, the two first gears 4421 are respectively engaged with the rack 332 of the guide module 33, and the second gear 4422 is located between the two first gears 4421, so that the reliability of the movement of the pulley module 44 relative to the guide module 33 can be improved, and the torque applied to the entire gear shaft 4424 can be balanced by designing the number of the first gears 4421. The motor 443 is fixedly installed on the pulley 441, a motor shaft of the motor 443 is perpendicular to the gear shaft 4424, the third gear 4423 is fixedly installed on the motor shaft of the motor 443, and the third gear 4423 is meshed with the second gear 4422, so that the motor 443 can drive the second gear 4422 to rotate through the third gear 4423, and further the second gear 4422 drives the two first gears 4421 to rotate through the gear shaft 4424, and the pulley module 44 moves along the guide assembly 33 through the meshing between the first gears 4421 and the rack 332. Through the structural design to coaster module 44, can prevent effectively that coaster module 44 from filling end mould 42 and removing the in-process phenomenon of skidding appears driving the inverted arch to make inverted arch fill end mould 42 can reliably, steadily remove between second design position and third design position, and guarantee that inverted arch fill end mould 42 can accurately remove to second design position and third design position.

The air pump is respectively communicated with the ventilation ports 4111 of each inflation cavity 411 through the connection pipe 45, so that the air pump can simultaneously inflate or deflate the plurality of inflation cavities 411 through the connection pipe 45, and the airbag 41 can be unfolded or furled in the first direction. Preferably, the connection pipe 45 is a hose.

When the air pump inflates the air bag 41, the air pump is matched with the pulley module 44 to control the air bag 41 to be unfolded in the first direction, the inverted arch filling end die 42 is located at the portal 11 at the unfolding position of the air bag 41, namely, the inverted arch filling end die 42 is located at the second design position, at this time, the air bag 41 can be expanded to the design shape under the action of the air pump, so that the air cylinders are respectively adjacent to the third molding surfaces 32 of the two inverted arch short side wall templates 3, and the gap between the air bag 41 and the third molding surfaces 32 is sealed; meanwhile, the bottom surface of the air bag 41 forms a second molding surface 412, and the second molding surface 412 forms an inverted arch-shaped surface in cooperation with the first molding surface 31 to radially mold the top of the inverted arch. Wherein, the second forming surface 412 is the cambered surface, and the both sides of second forming surface 412 are tangent with the first forming surface 31 of two inverted arch short side wall templates 3 respectively, through the design to second forming surface 412 for after the inverted arch shaping, the camber of inverted arch top surface can accord with the design requirement, thereby guarantees that the atress performance of inverted arch accords with the design requirement.

When the air pump pumps air to the air cylinder, the air pump cooperates with the pulley module 44 to fold the air bag 41 in the first direction, and in the folded position of the air bag 41, the inverted arch filling end die 42 is located at the extending end of the main beam group 12, i.e., the third design position of the inverted arch filling end die 42. It can be seen that the structural design of the air bag 41 can ensure the flatness of the second molding surface 412 to improve the molding quality and the molding precision of the inverted arch, and the air bag 41 can be deflated and folded quickly.

Because gasbag 41's light in weight, but reuse nature is strong, does not take place easily behind the steel form practical time rust, warp, consequently maintains more simple, convenient, and adopts gasbag 41 as supplementary invert shaping's template can also solve the problem that exists when current adoption steel form is as invert shaping's template. For example, when the steel formwork is adopted as the formwork for forming the inverted arch in the prior art, the steel formwork needs to be hoisted by matching an excavator and a loader on site, the operation safety risk is high, and the steel formwork is easy to deform due to the mechanical hoisting of the steel formwork for multiple times and the disassembly and assembly of the steel formwork; for another example, when the existing inverted arch middle section arc-shaped steel formwork is installed, the installation needs to be carried out under the trestle 8, and auxiliary equipment (such as an excavator, a loader and the like) is very easily interfered by the trestle 8, so that the hoisting and installation processes of the inverted arch middle section arc-shaped steel formwork are difficult and heavy, and the problems of time and labor waste, high safety risk, low efficiency and the like exist. In addition, since the air bag 41 is full and has a certain inflation pressure, the overall structural performance thereof is the same as that of a steel form, so that the lightweight design of the tunnel construction auxiliary trolley 100 can be maximally achieved.

Preferably, a bracket 111 and a counterweight 112 are arranged on the gantry 11. The support 111 is fixedly connected with the gantry 11, and the counterweight block 112 is placed in the support 111, wherein the counterweight block 112 can be a stone or a concrete block. The balancing weight 112 can cooperate the frame 1 and the weight of the short side wall form 3 of inverted arch to resist the upward floating force of the inverted arch concreting process to the gasbag 41, and the balancing weight 112 can eliminate the influence of the weight of the girder group 12 and the short side wall form 3 of inverted arch on the auxiliary trolley 100 for tunnel construction, thereby preventing the auxiliary trolley 100 for tunnel construction from toppling.

Referring to fig. 7, the number of the jacking units 5 is two, and one jacking unit 5 is installed in one inverted arch low-profile wall formwork 3. The lifting unit 5 preferably includes two or more telescopic rods 51 and two or more rollers 52, and the two or more telescopic rods 51 and the two or more rollers 52 correspond to each other one by one. More than two telescopic rods 51 are distributed along a first direction, the telescopic rods 51 are parallel to the height direction of the frame 1, the roller 52 is connected with a first end of the telescopic rods 51, the roller 52 can rotate around the axis of the roller 52 relative to the telescopic rods 51, and the axial direction of the roller 52 is parallel to a second direction. The inverted arch low-side wall formwork 3 is provided with more than two openings on the first molding surface 31, the more than two openings correspond to the more than two telescopic rods 51 one by one, and in the height direction, one opening is positioned right below one corresponding telescopic rod 51. The first end of the telescopic rod 51 can pass through a corresponding one of the openings and extend to below the first molding surface 31, that is, the telescopic rod 51 can drive the roller 52 thereon through the first end thereof to pass through a corresponding one of the openings from inside the inverted low-profile wall formwork 3 and extend to below the first molding surface 31.

Preferably, the telescopic rod 51 is a third hydraulic telescopic rod, because the compressibility of the liquid is poor, the use of the third hydraulic telescopic rod as the telescopic rod 51 can improve the reliability of the operation of the jacking unit 5. The jacking unit 5 is arranged to enable the poured inverted arch to fill 117 concrete to meet the driving requirement, the auxiliary inverted arch short side wall formwork 3 is demoulded, the tunnel construction auxiliary trolley 100 can be started to move forwards easily, the telescopic rod 51 is provided with the roller 52, the friction force applied to the tunnel construction auxiliary trolley 100 in the moving forwards process is smaller, the inverted arch short side wall formwork 3 is better prevented from being damaged or being damaged by being knocked over and/or being filled with the inverted arch in the moving forwards process of the tunnel construction auxiliary trolley 100, and the protection effect is achieved on the inverted arch and the inverted arch filling.

The legs 6 are mounted at the bottom of the girder assembly 12, and the legs 6 are preferably telescopic legs 6 of a mechanical structure (e.g., a screw structure). The landing leg 6 can support between main beam group 12 and ground after the supplementary platform truck 100 of tunnel construction moves to the assigned position to prevent the supplementary platform truck 100 of tunnel construction from taking place to topple over in the course of the work, and the reliability that the landing leg 6 supported the supplementary platform truck 100 of tunnel construction wholly can be improved as landing leg 6 to the scalable landing leg 6 that adopts mechanical structure.

Referring to fig. 8 to 10, a second template unit 7 is provided at the projecting end of the girder group 12, and the second template unit 7 includes an inverted arch end mold 71 and a driving mechanism 72. Wherein the drive mechanism 72 comprises a first drive assembly 721 and a second drive assembly 722, the first drive assembly 721 comprising a first hydraulic telescoping rod 7211, a rail assembly 7212 and a carriage 7213, the first hydraulic telescoping rod 7211 and the rail assembly 7212 each being mounted on the spar assembly 12, the rail assembly 7212 extending in a first direction. Additionally, a rail assembly 7212 is fixedly coupled between carriage 7213 and main beam set 12 such that carriage 7213 can be moved relative to main beam set 12 by rail assembly 7212. The drive end of the first hydraulic telescoping rod 7211 is connected to the carriage 7213 such that the first hydraulic telescoping rod 7211 can drive the carriage 7213 in a first direction. Second drive assembly 722 is the second hydraulic telescoping rod, and second hydraulic telescoping rod fixed mounting is on carriage 7213, and the drive end and the inverted arch end mould 71 fixed connection of second hydraulic telescoping rod for the second hydraulic telescoping rod can drive inverted arch end mould 71 and remove in the direction of height of frame. The second template unit 7 is arranged, so that the inverted arch end film 71 can move without manual carrying by workers and hoisting equipment, and the inverted arch end film 71 can be mounted more conveniently.

The working process of the tunnel construction auxiliary trolley 100 is briefly described below with reference to fig. 1 to 15:

firstly, the telescopic rod 51 of the jacking unit 5 can be controlled to drive the roller 52 to extend to the lower part of the first molding surface 31 of the inverted arch short side wall formwork 3 so as to lift the inverted arch short side wall formwork 3 properly, and when the tunnel construction auxiliary trolley 100 is located at the current position and is poured with an inverted arch and filled with the inverted arch, the jacking unit 5 can demould the inverted arch short side wall formwork 3 together with the inverted arch and the inverted arch for filling.

Then, the tunnel construction auxiliary trolley 100 is controlled to move to the next section to be constructed through the traveling system 2 and moves to a specified position; subsequently, the legs 6 are controlled to be extended so that the legs 6 are supported between the primary support structure 105 and the main girder set 12 to prevent the tunnel construction auxiliary trolley 100 from toppling.

Then, the jacking unit 5 controls the telescopic rod 51 to drive the roller 52 to be retracted into the inverted arch short-side wall formwork 3, so as to ensure that the inverted arch short-side wall formwork 3 is in a third design position; then, the opening on the inverted arch short side wall formwork 3 is sealed by using an adhesive tape or a geotextile is used for supporting and filling between the opening and the roller 52, so that the opening is sealed, and concrete is prevented from entering the inside of the inverted arch short side wall formwork 3 in the inverted arch pouring process.

Then, fine adjustment is performed on the position of the tunnel construction auxiliary trolley 100 to ensure the position accuracy of each first template unit 4; subsequently, the driving mechanism 72 of the second template unit 7 is controlled so that the first driving assembly 721 and the second driving assembly 722 of the second driving mechanism 72 cooperate to drive the inverted arch end mold 71 to move to the first design position; wherein the inverted arch end form 71 is located between the leg 6 and the mast 11.

Next, the trestle 8 is erected so that both ends of the trestle 8 are respectively adjacent to the molded inverted arch filling 101 and the to-be-excavated segment 102. The trestle 8 can provide temporary traffic access during invert and invert filling.

Next, as shown in fig. 3 and 8, the air pump of the first template unit 4 is controlled to re-inflate the air bag 41, and the pulley module 44 synchronously controls the inverted arch filling end mold 42 to move to the second design position until the inverted arch filling end mold 42 reaches the second design position; the current position of trolley module 44 is then locked. After the inverted arch filling end die 42 reaches the second design position, the inverted arch filling end die 42 is adjacent to the previous section of the formed inverted arch filling 101; after the airbags 41 are inflated to the unfolding position, the airbags 41 are respectively adjacent to the third molding surfaces 32 of the two inverted arch short side wall templates 3, and the second molding surfaces 412 formed on the bottom surfaces of the airbags 41 are respectively tangent to the first molding surfaces 31 of the two inverted arch short side wall templates 3, so that inverted arch cavities 103 are formed among the airbags 41, the molded inverted arch 108, the two inverted arch short side wall templates 3 and the primary support structure 105.

Next, as shown in fig. 9 and 10, concrete is poured into the inverted arch cavity 103 to form an inverted arch 104, and when the concrete of the inverted arch 104 is poured, the concrete is opened from between the inverted arch low profile wall form 3 and the primary support structure 105 through a chute, so that the inverted arch cavity 103 is automatically filled with the concrete; the concrete may then be vibrated using a vibrator at the opening formed between the inverted arch low profile wall form 3 and the primary support structure 105 to enable the concrete to be tamped.

Next, as shown in fig. 11, after the inverted arch 104 is poured and reaches the initial setting, the air pump of the first template unit 4 is used for pumping the air bag 41, and the pulley module 44 synchronously controls the inverted arch filling end mold 42 to move to the third design position until the inverted arch filling end mold 42 reaches the third design position, and the air bag 41 is folded; the current position of trolley module 44 is then locked. After the inverted arch filling end mold 42 reaches the third design position, the inverted arch filling end mold 42 is located at the end of the just-formed inverted arch 104, and an inverted arch filling cavity 106 is formed among the inverted arch filling end mold 42, the third molding surfaces 32 of the two tunnel short side wall formworks, the molded inverted arch filling 101 and the just-formed inverted arch 104.

Next, as shown in fig. 12, concrete is injected into the inverted arch filling cavity 106 to a designed level to form an inverted arch filling 107; the concrete may be vibrated by a vibrator while the inverted arch fill 107 is being poured to enable the concrete to be tamped. When concrete is poured into the inverted arch 104 and the inverted arch filler 107, the concrete tanker can travel onto the trestle 8.

Next, when the concrete strength of the just-formed inverted arch filling 107 meets the forming requirement, the driving mechanism 72 of the second template unit 7 is controlled, so that the first driving assembly 721 and the second driving assembly 722 of the second driving mechanism 72 cooperate to drive the inverted arch end mold 71 to perform demolding, and the inverted arch end mold 71 is separated from the inverted arch 104; then, the telescopic rod 51 of the jacking unit 5 controls the roller 52 thereon to extend below the second molding surface 412 of the inverted arch short-side wall formwork 3 again, so that the roller 52 is in contact with the short-side wall part of the inverted arch 104, and the jacking unit 5 properly jacks up the inverted arch short-side wall formwork 3, and demolding between the inverted arch short-side wall formwork 3 and the inverted arch 104 and the inverted arch filling 107 is realized.

Then, the support of the stand bar to the frame 1 is released; subsequently, the traveling system 2 controls the tunnel construction auxiliary trolley 100 to move to the next segment to be constructed for construction.

As another embodiment, the inverted arch end mold 71 may be fixedly connected to the frame 1 without being secondarily attached and detached during construction.

In summary, the tunnel auxiliary construction trolley can assist the inverted arch and the inverted arch to be filled and formed in the inverted arch and inverted arch filling layered pouring construction process, and shortens the construction time of the inverted arch and the inverted arch filling. Moreover, through the structural design of the tunnel construction auxiliary trolley, a temporary drainage ditch can be formed between the formed inverted arch and the inverted arch filling, so that a temporary drainage effect is achieved in the tunnel construction process; in addition, by designing the first template unit, the first template unit can play a role in assisting the forming of the inverted arch without manually installing an arc-shaped template at the middle section of the inverted arch by workers, the weight of the tunnel construction auxiliary trolley can be greatly reduced, the structure of the tunnel construction auxiliary trolley can be simplified, and the manufacturing cost of the tunnel construction auxiliary trolley can be reduced; through designing the second template unit for the removal of invert end membrane need not workman's manual handling, also need not with the help of lifting device, thereby makes the installation of invert end mould more convenient.

Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the utility model are possible to those skilled in the art, without departing from the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a tunnel construction assists platform truck which characterized in that includes:

the frame comprises a portal frame and two main beam groups, wherein the two main beam groups are arranged on the portal frame and extend along a first direction;

the walking system comprises a walking wheel set, and the walking wheel set is arranged at the bottom of the gantry;

the inverted arch short side wall formwork is arranged on the main beam group, extends along the first direction and is provided with a first molding surface;

the first template unit comprises an air bag, an inverted arch filling end mold and an air pump, the air bag is installed between the two inverted arch short side wall templates, the first end of the air bag is fixed at the extending end of the main beam group, the second end of the air bag is fixedly connected with the inverted arch filling end mold, the inverted arch filling end mold is slidably connected with the two inverted arch short side wall templates in the first direction respectively, the air pump can inflate or deflate the air bag, the air bag can be unfolded or folded in the first direction, in the unfolding position of the air bag, the inverted arch filling end mold is located at the gantry, the air bag is adjacent to the two inverted arch short side wall templates, the bottom surface of the air bag forms a second molding surface, the second molding surface and the first molding surface form an inverted arch molding surface, and in the folding position of the air bag, the inverted arch filling end die is positioned at the extending end of the main beam group;

the second template unit, the second template unit is located the department of stretching out of girder group, the second template unit includes invert end mould and actuating mechanism, invert end mould is located the below of girder group, actuating mechanism installs on the frame, actuating mechanism can drive invert end mould on the direction of height of frame and/or remove in the first direction.

2. The tunnel construction auxiliary trolley according to claim 1, wherein:

the first molding surface and the second molding surface are both cambered surfaces, and two sides of the second molding surface are respectively tangent to the two first molding surfaces.

3. The tunnel construction auxiliary trolley according to claim 1, wherein:

the air bag is provided with a plurality of inflation cavities, the inflation cavities are distributed along the first direction, and the ventilation ports of the inflation cavities are respectively communicated with the air pump.

4. The tunnel construction auxiliary trolley according to claim 1, wherein:

one surface, facing the first template unit, of each inverted arch low side wall template is provided with a group of guide assemblies, and the guide assemblies extend along the first direction;

first template unit still includes two coaster modules, one the coaster module is connected the one end of end mould is filled to the inverted arch and a set of between the guide assembly, at least one the coaster module can drive the end mould is filled to the inverted arch is followed the guide assembly slides.

5. The tunnel construction auxiliary trolley according to claim 4, wherein:

the guide assembly comprises a guide rail and a rack;

the coaster module includes coaster, gear train and motor, the coaster is followed the extending direction of guide rail with guide rail slidable connects, the end mould is filled to the inverted arch the gear train with the motor is all installed on the coaster, the gear train with rack toothing, the motor can drive the gear train transmission.

6. The tunnel construction auxiliary trolley according to claim 1, wherein:

the tunnel construction auxiliary trolley also comprises two groups of jacking units, one group of jacking units is arranged in one inverted arch low-side wall formwork, each jacking unit comprises a telescopic rod, and the telescopic rods are parallel to the height direction;

the inverted arch low-side wall formwork is provided with an opening on the first molding surface, and the first end of the telescopic rod can penetrate through the opening and extend out to the position below the first molding surface.

7. The tunnel construction auxiliary trolley according to claim 6, wherein:

the jacking unit further comprises a roller, the roller is connected with the first end of the telescopic rod, and the telescopic rod can drive the roller to penetrate through the opening in the inverted arch low-side wall formwork and extend to the position below the first molding surface.

8. The tunnel construction auxiliary trolley according to claim 1, wherein:

the gantry is provided with a support and a balancing weight, the support is connected with the gantry, and the balancing weight is placed in the support.

9. The tunnel construction auxiliary trolley according to claim 1, wherein:

the drive mechanism includes:

the first driving assembly comprises a first hydraulic telescopic rod, a guide rail assembly and a sliding frame, the first hydraulic telescopic rod is installed on the main beam group, the guide rail assembly is connected between the main beam group and the sliding frame, the guide rail assembly is parallel to the first direction, and the first hydraulic telescopic rod can drive the sliding frame to move in the first direction;

the second drive assembly, the second drive assembly includes the second hydraulic stretching pole, the second hydraulic stretching pole is connected the carriage with between the inverted arch end mould, the second hydraulic stretching pole can drive the inverted arch end mould is in remove in the direction of height.

10. The tunnel construction auxiliary trolley according to any one of claims 1 to 9, wherein:

the frame further comprises two groups of pull rod sets, one group of pull rod sets is respectively connected with the inverted arch low side wall formwork and the portal frame, and the pull rod sets are located above the inverted arch low side wall formwork;

the traveling system further comprises a driving unit, and the driving unit drives the traveling wheels of the traveling wheel set to rotate.

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