CN210530862U

CN210530862U - Tunnel construction trolley

Info

Publication number: CN210530862U
Application number: CN201920858162.7U
Authority: CN
Inventors: 龚岗; 王立军; 陈勇; 王双卯; 张建堂; 龚建
Original assignee: Fute Intelligent Equipment Chongqing Co ltd
Current assignee: Fute Intelligent Equipment Chongqing Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-05-15
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a tunnel construction platform truck is rail mounted from walking structure, including the platform truck main part that has the steel skeleton, the steel skeleton includes that many pin is longitudinal arrangement and confined annular steelframe, and whole annular steelframes pass through longeron fixed connection as an organic whole, and the annular steelframe has the hole wall profile modeling part of imitative tunnel lateral wall and vault. Preferably, a concrete pouring template system with two linings is arranged on the trolley main body; a distributing machine is arranged in the steel framework and can be longitudinally and movably arranged on the distributing track through a distributing trolley; the two-lining concrete pouring template system comprises an arch top template group and a side wall template group, and pressurized grouting pouring windows are arranged on the arch top template group and the side wall template group. The utility model has the advantages of good structural stability, strong bearing capacity and good universality; the two-lining-belt pressure grouting pouring trolley is constructed, the vault pressure pouring requirement can be met, and the two-lining pouring trolley is good in pouring quality and high in strength. And simple structure, easy dismounting, inside trafficability reinforce.

Description

Tunnel construction trolley

Technical Field

The utility model relates to a tunnel construction equipment field, in particular to tunnel construction platform truck.

Background

In the tunnel operation of railways or highways, the construction operation trolley comprises a plurality of construction operation trolleys, and the construction operation trolleys are mainly used in the tunnel tunneling process, the tunnel wall waterproofing process and the tunnel wall reinforcing process. The reinforcing construction of the tunnel wall comprises primary building, secondary lining steel bar laying and the like, and different trolleys or comprehensive trolleys which can adapt to two or more than two types of construction are usually adopted according to different construction contents. The existing trolley is mostly of a skeleton structure, although the existing frameless trolley for pouring the two linings is also provided with the steel plate and reinforcing ribs for reinforcing the strength of the steel plate, the frameless trolley is of a bearing structure formed by the steel plate and the reinforcing ribs for reinforcing the strength of the steel plate, the internal space of the frameless trolley is large, a material distributor arranged in the trolley is provided with sufficient space for deployment, and the frameless trolley is large in steel plate using amount, heavy and expensive in manufacturing cost for meeting the pouring requirement of grouting under pressure. The skeleton of the existing skeleton trolley generally adopts a gantry structure or a well frame structure, the bottom end of the skeleton is n-shaped, the hidden danger of the outward expansion of the bottom ends of the stand columns at two sides exists, and the structural rigidity and the strength are reduced. Similarly, the existing frameless secondary lining pouring trolley is n-shaped as a whole, cannot meet the requirement of pressurized grouting pouring of the vault part, can only feed materials into a mold cavity through a hopper and a pouring window under the action of gravity even if the trolley is close to the upper part of the vault, has the defects of honeycombs and holes caused by concrete segregation, mortar separation, stone accumulation and the like, influences the quality of reinforced concrete reinforcing layers of secondary linings of the tunnel, and is difficult to meet the gradually improved quality requirement relative to the development trend that the strength requirement of the secondary linings is higher and higher. Therefore, the existing tunnel construction trolley needs to be improved so as to improve the integral rigidity and bearing capacity of the trolley, and when the trolley is used for secondary lining pouring, the requirement of vault grouting pouring under pressure can be met.

Disclosure of Invention

The utility model aims to provide a tunnel construction trolley, aiming at the defect of poor bearing capacity of the trolley main body in the tunnel construction in the prior art, the trolley effectively enhances the rigidity and the bearing capacity of the framework by forming the framework into an annular closed structure, reduces the material consumption and the weight and the manufacturing cost; the structure is simple, the processing is convenient, and the universality is good.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The utility model provides a tunnel construction platform truck, is rail mounted from walking structure, includes the platform truck main part that has the steel skeleton, the steel skeleton includes that many pin are longitudinal arrangement, and annular confined annular steelframe, and whole annular steelframes pass through longeron fixed connection as an organic whole, and annular steelframe has the hole wall profile modeling part of imitative tunnel lateral wall and vault.

Adopt aforementioned scheme the utility model discloses, the annular steelframe through longeron and the many pin longitudinal arrangement that distribute along the longeron forms the platform truck main part, makes the whole annular enclosed construction that forms of platform truck main part, can form the good resistance to outside effort to form the annular enclosed construction that anti deformability is strong, improve structural rigidity, reinforcing bearing capacity. And can effectively reduce material consumption, weight and manufacturing cost. The trolley can fully utilize the inner space to form construction equipment, material transportation and personnel channels by erecting the trestle. After the trolley main body is used for carrying out corresponding operation platforms or construction facilities, various trolleys for tunnel construction can be formed. The method is particularly suitable for forming a two-lining pouring trolley, and can have good deformation resistance to external force acting on the top so as to meet the requirement of grouting pouring under pressure of the arch crown part of the tunnel. The structure is simple, the processing is convenient, and the universality is good.

Preferably, the annular steel frame comprises an arched top beam, two sides of the arched top beam are respectively connected with an arc-shaped side column, and the lower ends of the arc-shaped side columns are supported on the bearing bottom beam; the arched top beams and the arched side columns jointly form an arch structure imitating a tunnel vault and a tunnel wall. The pre-deformation structure resisting the acting force of the outer side is formed by forming the profiling parts of the tunnel-imitating side wall and the vault of the four-section combined structure, and the whole body keeps good rigidity and strength through reasonable segmentation.

Preferably, the middle part of the bearing bottom beam is in an inverted arch shape imitating an inverted arch of a tunnel. The annular steel frame forms an external profile shape with the tunnel section profile being reduced at equal intervals, so that a stable structure with the same shape as the tunnel section profile is formed, a large enough internal space and structural size are obtained as much as possible, and the rigidity and the strength are further improved.

Preferably, the upper and lower connecting end joint surfaces of the arc-shaped side columns are parallel to the normal of the part where the upper and lower connecting end joint surfaces are located; the two ends of the arc-shaped side column are provided with a connecting plate, and the arc-shaped side column is fixedly connected with another connecting plate arranged corresponding to the component through a high-strength bolt. So as to form a complete arc-shaped connecting structure, and further ensure the rigidity and the strength of the whole structure.

Preferably, the cross section of the annular steel frame is H-shaped, I-shaped, ⊥ -shaped or □ -shaped so as to form a light steel structure with strong bending resistance, and in the scheme that the cross section of the annular steel frame is H-shaped or I-shaped, the cross section of the annular steel frame is I-shaped and comprises a web plate and wing plates positioned on two sides of the web plate, the web plate and the wing plates are welded into a whole, the web plate is formed by cutting steel plates, so that cross sections with different sizes are formed according to different requirements of bearing capacity of each part, material consumption is saved on the premise of ensuring enough rigidity and strength, and the web plate is processed in a cutting mode, so that the manufacturing cost can be reduced.

It is further preferred that the width of the two ends of the load-bearing web forming the i-shaped structure of the load-bearing bottom beam is greater than that of the middle section, and the two ends are provided with obliquely extending parts which extend outwards and upwards gradually and are narrowed gradually. Further, on the premise that the bearing bottom beam meets the bearing requirement, the material consumption is reduced, and the manufacturing cost is saved.

Preferably, a concrete pouring template system with two linings is arranged on the trolley main body; a distributing machine is arranged in the steel framework and can be longitudinally and movably arranged on the distributing track through a distributing trolley; the two-lining concrete pouring template system comprises an arch top template group and a side wall template group, and pressurized grouting pouring windows are arranged on the arch top template group and the side wall template group. The inner space of the annular framework of the trolley main body is large, the material distributor is convenient to arrange, and the characteristics of good structural stability and strong bearing capacity are achieved, so that the under-pressure grouting pouring can be realized at the vault of the tunnel, the defects caused by concrete segregation such as pits, honeycombs and holes caused by the non-under-pressure grouting pouring are eliminated, the high-quality tunnel engineering requirements are met, and the development trend that the engineering quality requirements are higher and higher is adapted. Wherein, the cloth machine adopts the mature activity articulated type three-section cloth tube structure among the prior art. Of course, the distributor can be suspended on the distribution trolley or mounted above the trolley according to the pouring requirement under pressure.

Further preferably, the arched top template group is driven by a first oil cylinder group to vertically extend and retract; and the side wall template group is driven by a second oil cylinder group to stretch obliquely. So as to ensure that the concrete pouring pressure acting on the normal direction of the cambered surface of the template can be uniformly and reliably transmitted to the corresponding oil cylinder, and the template can stretch and contract along the normal direction of the middle part of the template in the stretching and contracting process; when the formwork is assembled, the arch top formwork group extends in place firstly, and the side wall formwork group extends in place subsequently and is combined with the arch top formwork group to form a tunnel secondary lining pouring formwork; when the formwork is removed, the side wall formwork group is firstly retracted to the proper position, and then the arch top formwork group is retracted and dislocated with the side wall formwork group.

Preferably, the lower end of the trolley main body is provided with a jacking oil cylinder, and two sides of the trolley main body are provided with transverse displacement adjusting oil cylinders; and a carrying trolley is hung at the lower end of the trolley main body. When grouting pouring under pressure is carried out, the jacking oil cylinder bears the load, so that the wheel bearing is avoided, and the wheel is ensured not to be damaged accidentally; meanwhile, the right and left positions of the trolley can be properly adjusted through the transverse displacement adjusting oil cylinder, and compared with a structure in which a template position adjusting mechanism is arranged on the trolley, the structure can effectively simplify the connecting structure of the template and the trolley, so that the manufacturing cost is further reduced. The carrying trolley is used for bearing the trolley after being additionally provided with a proper amount of sizing blocks when the trolley needs to be integrally transferred in a state of being separated from the track, so that the carrying trolley can transversely shift when the transverse position of the trolley is adjusted.

The utility model has the advantages of good structural stability, strong bearing capacity and good universality; the device is particularly suitable for being constructed into a secondary lining belt pressure grouting pouring trolley; compared with the existing two-lining pouring trolley, the two-lining pouring trolley can meet the requirement of pouring the grouting under pressure at the arch crown of the tunnel, and is good in two-lining pouring quality and high in strength. And simple structure, easy dismounting, the inner space is big, and the trafficability is strong.

Drawings

Fig. 1 is a schematic axial view of the structure in the tunnel according to the present invention.

Fig. 2 is a front view of the structure of the present invention, and the left side of the figure is located in the tunnel portal direction.

Fig. 3 is a left side view of fig. 2 of the present invention.

Fig. 4 is a schematic structural view of the middle ring-shaped steel frame of the present invention.

Fig. 5 is a schematic view of the cross-sectional structure of the middle ring steel frame of the present invention.

Fig. 6 is a schematic structural view of each component section and the corresponding connecting plate of the middle ring steel frame of the present invention.

Fig. 7 is an enlarged view of a portion a in fig. 4 according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the embodiments described herein.

Referring to fig. 1, 2 and 3, the tunnel construction trolley is of a rail-type self-walking structure and comprises a trolley main body with a steel framework, wherein the steel framework comprises a plurality of longitudinally arranged annular steel frames 1 which are closed in an annular mode, all the annular steel frames 1 are fixedly connected into a whole through longitudinal beams 2, the end of each longitudinal beam 2 is □ -shaped, a plurality of longitudinal beams 2 are distributed along the circumferential direction of each annular steel frame 1, the cross section sizes of the two longitudinal beams 2 at the lower end are obviously larger than that of the longitudinal beams 2 at the other parts, and wheels of the trolley are respectively arranged on the two longitudinal beams 2 at the lower end. Be equipped with between two longerons of lower extreme and be used for the current landing stage 700 of vehicle, the landing stage both ends are equipped with convertible landing stage ramp to the landing stage about the vehicle, the landing stage ramp is outwards extended by the platform truck tip.

Referring to fig. 4, the annular steel frame 1 is formed by combining four sections, and comprises an arched top beam 11, two sides of the arched top beam 11 are respectively connected with an arc-shaped side column 12, and the lower end of the arc-shaped side column 12 is supported on a bearing bottom beam 13; the arched top beams 11 and the arched side columns 12 jointly form an arch structure imitating a tunnel vault and a tunnel wall. The middle part of the bearing bottom beam 13 is in an inverted arch shape imitating an inverted arch of the tunnel. The upper and lower connecting end joint surfaces of the arc-shaped side column 12 are parallel to the normal of the part where the upper and lower connecting end joint surfaces are located, and four normals of the four joint parts are intersected at the same position, namely the four surfaces are intersected on the same axis; the two ends of the arc-shaped side column 12 are provided with a connecting plate 1c, the arc-shaped side column 12 is fixedly connected with another connecting plate 1c arranged corresponding to the component through the connecting plate by high-strength bolts and is locked by nuts, and obviously, the connecting plate 1c is provided with bolt penetrating holes 1d for penetrating the high-strength bolts. Wherein, the section of the annular steel frame 1 is in an H-shaped or I-shaped structure, as shown in FIG. 5; the novel wing plate structure comprises a web plate 1a and wing plates 1b positioned on two sides of the web plate, wherein the web plate 1a and the wing plates 1b are welded into a whole, and the web plate is formed by cutting a steel plate. The width of the two ends of the bearing web plate forming the I-shaped structure of the bearing bottom beam 13 is larger than that of the middle section, the bearing web plate is in a structure with gradually changed width, and the two ends are provided with obliquely extending parts which extend outwards and upwards gradually, and the obliquely extending parts are gradually narrowed.

The trolley main body is provided with a two-lining concrete pouring template system, a distributing machine 100 is arranged in a steel skeleton, the distributing machine 100 is longitudinally movably arranged on a distributing track through a distributing trolley 110, the distributing track is suspended on the vault part of the annular steel frame 1 through a track hanger 120, and is specifically hoisted and fixed through an arch top beam 11 of the annular steel frame 1; the concrete feeding pipe 140 is positioned at one end of the trolley facing the opening of the hole, the track hanging bracket 120 is provided with a concrete feeding interface, the feeding interface is connected with the feeding end of the distributing machine 100 through a hose, and a distributing pipe of the distributing machine adopts a movable joint type three-section structure, so that the distributing interface can be respectively connected with each under-pressure grouting and pouring window, and then concrete under-pressure grouting and pouring of each part are carried out; the two-lining concrete pouring template system comprises an arch top template set 200 and a side wall template set 300, and pressurized grouting pouring windows are arranged on the arch top template set and the side wall template set. The arch top formwork group 200 is composed of a plurality of arch top formworks, each arch top formwork is driven by at least two first oil cylinders to vertically extend and retract correspondingly, and the first oil cylinders form a first oil cylinder group; the sidewall template set 300 is composed of a plurality of sidewall templates, each sidewall template is driven by at least two second oil cylinders to extend and retract in an inclined manner, and the plurality of second oil cylinders form a second oil cylinder set. The lower end of the trolley main body is provided with a jacking oil cylinder 400, and the lower end of the jacking oil cylinder 400 is provided with a foot plate with a spherical hinge structure; the two sides are provided with a transverse displacement adjusting oil cylinder 500, and the transverse displacement adjusting oil cylinder 500 is horizontally arranged; the far ends of the jacking oil cylinder 400 and the transverse displacement adjusting oil cylinder 500 are provided with foot plates with spherical hinge structures; and the lower end of the trolley main body is hung with a carrying trolley 600.

The lateral displacement adjusting cylinder 500 in this embodiment may also be disposed obliquely downward, and when the oblique downward disposition is adopted, the load of the carrier 600 may be reduced.

The section of the annular steel frame 1 in the embodiment can also be in an ⊥ shape or a □ shape.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a tunnel construction platform truck, is rail mounted from walking structure, includes the platform truck main part that has the steel skeleton, its characterized in that, the steel skeleton includes that the pin is longitudinal arrangement, and annular confined annular steelframe (1), and whole annular steelframe (1) are as an organic whole through longeron (2) fixed connection.

2. The tunnel construction trolley according to claim 1, wherein the annular steel frame (1) comprises an arched top beam (11), two sides of the arched top beam (11) are respectively connected with an arc-shaped side column (12), and the lower end of the arc-shaped side column (12) is supported on a bearing bottom beam (13); the arched top beams (11) and the arched side columns (12) jointly form an arch structure imitating the arch crown and the wall of the tunnel.

3. The tunnel construction trolley according to claim 2, characterized in that the middle of the load-bearing bottom beam (13) is shaped like an inverted arch of a tunnel.

4. The tunnel construction trolley according to claim 2, wherein the upper and lower connecting end joint surfaces of the arc-shaped side columns (12) are parallel to the normal of the part where the upper and lower connecting end joint surfaces are located; two ends of the arc-shaped side column (12) are provided with a connecting plate, and the arc-shaped side column (12) is fixedly connected with another connecting plate arranged corresponding to the component through a high-strength bolt.

5. The tunnel construction trolley according to claim 2, characterized in that the ring steel frame (1) is "H" -shaped, "i" -shaped, "⊥" -shaped or "□" -shaped in cross-section.

6. The tunnel construction trolley according to claim 5, wherein in the scheme that the section of the annular steel frame (1) is H-shaped or I-shaped, the annular steel frame comprises a web plate and wing plates positioned on two sides of the web plate, the web plate and the wing plates are welded into a whole, and the web plate is formed by cutting a steel plate.

7. The tunneling trolley according to claim 6, characterized in that the load-bearing web constituting the "H" or "I" structure of the load-bearing bottom beam (13) has a width greater at both ends than the width of the middle section and forms a structure of gradually varying width, and has obliquely extending portions extending gradually outward and upward at both ends, the obliquely extending portions being gradually narrowed.

8. The tunnel construction trolley according to any one of claims 1 to 7, wherein a secondary lining concrete pouring formwork system is arranged on the trolley main body; a distributing machine is arranged in the steel framework and can be longitudinally and movably arranged on the distributing track through a distributing trolley; the two-lining concrete pouring template system comprises an arch top template group and a side wall template group, and pressurized grouting pouring windows are arranged on the arch top template group and the side wall template group.

9. The tunnel construction trolley of claim 8, wherein the set of crown modules is vertically extendable and retractable by a first cylinder group; and the side wall template group is driven by a second oil cylinder group to stretch obliquely.

10. The tunnel construction trolley according to any one of claims 1 to 7, wherein a jacking cylinder is provided at a lower end of the trolley main body, and lateral displacement adjusting cylinders are provided at both sides; and a carrying trolley is hung at the lower end of the trolley main body.