Large-span fully hydraulic tire walking tunnel inverted arch trestle and construction method

Abstract

The present invention belongs to the technical field of tunnel invert construction equipment. A large-span all-hydraulic tire walking tunnel invert trestle comprises a main bridge, a front slope bridge, a rear slope bridge, a rear walking mechanism and a walking trolley. Support legs are arranged at the bottom of the main bridge, the front slope bridge is arranged at the front end of the main bridge; the rear slope bridge is arranged at the rear end of the main bridge; the rear walking mechanism is arranged at the rear end of the main bridge and drives the main bridge to move; walking legs are arranged at the lower part of the walking trolley, and the walking trolley and the main bridge can move relative to each other. A construction method of a large-span all-hydraulic tire walking tunnel invert trestle is also disclosed. The present invention solves the problem of interference between invert construction and face traffic operation, the problem of the trolley passing the non-invert section by itself, and the difficult problem of excavation under the front slope bridge. The present invention has strong adaptability in both step excavation and full-section excavation, and has a simple structure and convenient on-site assembly. It can achieve a 24m effective invert construction interval and improve the efficiency of tunnel construction.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel invert construction equipment, and in particular relates to a large-span full-hydraulic tire walking type tunnel invert trestle and a construction method. Background Art

[0002] The tunnel invert trestle is a device to solve the problem of interference between invert construction and face construction, which can speed up the construction progress. At present, there are many problems with the invert trestle. The 12m span trestle is widely used. During construction, it can only meet the 12m invert formwork construction once, and the next cycle of construction can only be carried out after the concrete solidifies, which affects the construction progress; the front slope bridge has a small flip angle, which is difficult to meet the full section excavation and step method excavation; the front and rear height difference of the trestle is large, and it is difficult to meet the convenience of the trestle passing the section without the invert when adapting to the section with the invert; Therefore, a large-span full hydraulic tire walking tunnel invert trestle with strong versatility and high degree of automation is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a large-span fully hydraulic tire walking tunnel invert trestle and a construction method in view of the above-mentioned problems and shortcomings, which has strong excavation adaptability, on-site assembly of the overall structure, and sufficient construction space, thereby optimizing the tunnel invert construction process.

[0004] To achieve the above purpose, the technical solution adopted is:

[0005] A large-span fully hydraulic tire walking tunnel invert trestle, comprising:

[0006] A main bridge, with support legs provided at the bottom of the main bridge;

[0007] A front slope bridge, which is arranged at the front end of the main bridge;

[0008] A rear slope bridge, which is arranged at the rear end of the main bridge;

[0009] A rear traveling mechanism, which is arranged at the rear end of the main bridge and drives the main bridge to move; and

[0010] A walking trolley, wherein a walking leg is arranged at the lower part of the walking trolley, and the walking trolley and the main bridge can move relative to each other;

[0011] When the rear walking mechanism drives the main bridge to move forward, the walking trolley supports the ground, and the front end of the main bridge is supported on the walking trolley and moves forward relative to the walking trolley.

[0012] According to the large-span fully hydraulic tire walking tunnel inverted arch trestle of the present invention, preferably, the rear walking mechanism includes:

[0013] Walking support seat;

[0014] Traveling wheels, which are arranged on the travel supporting seat; and

[0015] The travel drive unit drives the travel wheels to move and drives the main bridge to move.

[0016] The travel wheel is a solid rubber tire; the travel drive unit is a hydraulic motor, and the travel drive unit and the travel wheel are driven by matching meshing gears.

[0017] According to the large-span fully hydraulic tire walking tunnel inverted arch trestle of the present invention, preferably, a lifting platform is arranged on the top of the walking support seat, a matching lifting inner sleeve and a lifting outer sleeve are arranged between the walking support seat and the lifting platform, and a first oil cylinder is arranged between the lifting inner sleeve and the lifting outer sleeve.

[0018] According to the large-span fully hydraulic tire walking tunnel inverted arch trestle bridge of the present invention, preferably, the support legs include a front support leg assembly and a rear support leg assembly respectively arranged at the front and rear ends of the main bridge;

[0019] The front supporting leg assembly comprises:

[0020] The outer sleeve of the first leg is provided on both sides of the main bridge, and two outer sleeves of the first leg are provided on the left and right sides respectively. A cross brace is provided between the two outer sleeves of the first leg. The main bridge is provided on the cross brace in a matching and sliding manner. A diagonal screw is provided between the lower part of both ends of the cross brace and the outer sleeves of each of the first legs.

[0021] A first leg inner sleeve, which is slidably sleeved in the first leg outer sleeve, and a heightened leg is arranged at the bottom of the first leg inner sleeve;

[0022] A second oil cylinder drives the first leg outer sleeve and the first leg inner sleeve to slide relative to each other; and

[0023] a third oil cylinder, which is disposed between the cross bracing beam and the main bridge and drives the relative movement of the main bridge and the cross bracing beam;

[0024] The rear support leg assembly comprises:

[0025] A sliding seat, which is arranged at the bottom of the main bridge;

[0026] A transverse movement base, the sliding seat being slidably arranged on the transverse movement base; and

[0027] The fourth oil cylinder is arranged between the sliding seat and the transverse moving base, and drives the sliding seat and the transverse moving base to move relative to each other.

[0028] According to the large-span fully hydraulic tire walking tunnel invert trestle of the present invention, preferably, the walking trolley comprises:

[0029] A trolley body, the main bridge support being arranged on the trolley body; and

[0030] Walking legs, which are arranged at each end corner of the trolley body, and the walking legs are lifting legs; and

[0031] A walking assembly drives the trolley body to move back and forth on the main bridge.

[0032] According to the large-span fully hydraulic tire walking tunnel inverted arch trestle of the present invention, preferably, the trolley body is provided with a main bridge load-bearing rail wheel, and the main bridge is matched and fitted with rolling support on the main bridge load-bearing rail wheel;

[0033] The walking legs include:

[0034] Second leg outer sleeve;

[0035] A second leg inner sleeve, which is slidably disposed in the second leg outer sleeve, and a heightened leg is disposed at the bottom of the second leg inner sleeve; and

[0036] A fifth oil cylinder drives the outer sleeve of the second leg and the inner sleeve of the second leg to slide relative to each other;

[0037] The trolley body is fixedly arranged between multiple outer sleeves of the second legs, and side stop wheels are also arranged on the outer sleeves of the second legs. The side of the main bridge is rolled and supported between the multiple side stop wheels; the walking assembly is arranged on the top of the walking legs, and the walking assembly includes a trolley walking track wheel, a hydraulic motor and a main drive sprocket, and a walking track corresponding to the trolley walking track wheel and a bent plate chain corresponding to the main drive sprocket are arranged on the top of the main bridge; a heightening seat is arranged between the bent plate chain and the main bridge.

[0038] According to the large-span fully hydraulic tire walking tunnel invert trestle bridge of the present invention, preferably, the main bridge at least comprises:

[0039] The first section, the front slope bridge is hingedly arranged at the end of the first section, a sixth oil cylinder is arranged between the front slope bridge and the first section, and the sixth oil cylinder controls the turning action of the front slope bridge;

[0040] a second section, wherein the rear slope bridge is hingedly arranged at an end of the second section, and a seventh oil cylinder is arranged between the rear slope bridge and the second section, and the seventh oil cylinder controls the turning action of the rear slope bridge; and

[0041] The third section is arranged between the first section and the second section.

[0042] According to the large-span fully hydraulic tire walking tunnel invert trestle bridge of the present invention, preferably, the first section, the second section and the third section all include:

[0043] symmetrically arranged box girders; and

[0044] A crossbeam is arranged between the two box beams, a walkway is arranged on the crossbeam, and a corbel corresponding to the crossbeam is also arranged at the lower part of the box beam;

[0045] The box beam and the cross beam, and the cross beam and the walkway are all fixed by bolting; and the first section and the third section, and the second section and the third section are all bolted by correspondingly arranged internal butt flanges and external supplementary connection flanges of the box beam;

[0046] It also includes a hydraulic and electrical system, which includes a first hydraulic and electrical control component and a second hydraulic and electrical control component. The first hydraulic and electrical control component is arranged in a box beam at one end of the main bridge; the second hydraulic and electrical control component is arranged on the walking trolley and controls the movement of the walking trolley.

[0047] A construction method for a large-span fully hydraulic tire walking tunnel inverted arch trestle, using the large-span fully hydraulic tire walking tunnel inverted arch trestle for construction, specifically comprising the following steps:

[0048] a. Assemble in the corresponding sections, complete the installation and commissioning of the large-span fully hydraulic tire walking tunnel invert trestle, and carry out construction work in the corresponding sections;

[0049] b. After the construction of this section is completed, the front slope bridge, rear slope bridge and supporting legs are lifted, and the main bridge is supported by the rear walking mechanism and walking trolley;

[0050] c. Drive the rear walking mechanism to move, drive the main bridge to move forward relative to the walking trolley, and after reaching a set distance S, the main bridge is supported by the supporting legs, the walking legs of the walking trolley are retracted, and the walking trolley is driven to move forward on the main bridge;

[0051] When the set distance S of a single walk is less than the distance between two adjacent construction sections, repeat steps b and c until the large-span fully hydraulic tire walking tunnel invert trestle moves to the set position, and then carry out construction work in the next section.

[0052] The beneficial effects achieved by adopting the above technical solution are:

[0053] The present invention solves the problem of interference between invert construction and face traffic operation, the problem of the trestle passing the section without invert by itself, and the problem of excavation under the front slope bridge. The present invention has strong adaptability in both step excavation and full-section excavation, and has a simple structure and convenient on-site assembly. It can realize an effective invert construction section of 24m and improve the efficiency of tunnel construction.

[0054] The setting of the rear walking mechanism of the present application can avoid crushing the cast invert arch through the setting of solid rubber tires. It adopts hydraulic motor and gear transmission, which can increase the torque and control the driving speed at 3-10m / min to ensure the walking stability. At the same time, the walking wheels support the ground or leave the ground at different stages, thereby ensuring the switching of modes and realizing the further improvement and development of the functions of the pier itself.

[0055] The main bridge of the present application adopts a multi-section structure, which is not only convenient for transportation and on-site assembly, but also can be combined according to different needs to form a short trestle or a long trestle; the specific structure of the main bridge in the present application adopts a combination of box beams and cross beams, and walkways are arranged on the cross beams by bolting, and the overall stress condition of the main bridge is improved by setting corbels, thereby ensuring the stability of the main bridge structure; a pump station and an electrical system are set at one end of the box beam to avoid interference with other walking equipment; the front supporting leg assembly and the rear supporting leg assembly at the bottom of the main bridge can improve its stability, and by setting the heightened legs, it can adapt to the situation where the front and rear height differences of the trestle are large, and it has the characteristics of strong adaptability; both the front supporting leg assembly and the rear supporting leg assembly can realize the lateral movement of the front and rear ends of the trestle, further improving the adaptability and flexibility of the trestle.

[0056] The front slope bridge of the present application can rotate and swing from the bottom of the invert arch to an angle of 40° above the horizontal line, thereby meeting the needs of step excavation and full disconnection excavation operations, making the entire trestle bridge more adaptable, with less impact on operations and construction in different sections, and being able to improve the efficiency of construction operations and optimize the construction process.

[0057] The structural design of the walking trolley of the present application can not only be used for lifting and conveying the template, but also can realize the step-changing forward movement of the trestle and realize the integration of the functional structure of the trestle. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention, wherein the drawings are only used to illustrate some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0059] Figure 1 This is one of the structural schematic diagrams of a large-span fully hydraulic tire walking tunnel invert trestle according to an embodiment of the present invention.

[0060] Figure 2 The second structural schematic diagram of the large-span fully hydraulic tire walking tunnel invert trestle according to an embodiment of the present invention.

[0061] Figure 3 for Figure 1 Schematic diagram of the structure in the AA direction.

[0062] Figure 4 for Figure 1 Schematic diagram of the structure in the middle BB direction.

[0063] Figure 5 for Figure 1 Schematic diagram of the structure in the CC direction.

[0064] Figure 6 for Figure 1 Schematic diagram of the structure in the DD direction.

[0065] Figure 7 for Figure 1 Schematic diagram of the structure of the EE direction.

[0066] Figure 8 for Figure 1 Schematic diagram of the structure of the FF direction.

[0067] Fig. 9 Schematic diagram of the structure of the rear walking mechanism according to an embodiment of the present invention.

[0068] Fig.10 Schematic diagram of the structure of a walking leg according to an embodiment of the present invention.

[0069] Fig.11 Schematic diagram of the structure of the first leg outer sleeve and the first leg inner sleeve according to an embodiment of the present invention.

[0070] Serial number in the picture:

[0071] 100 is the main bridge, 101 is the first section, 102 is the second section, 103 is the third section, 104 is the box beam, 105 is the cross beam, 106 is the walkway, 107 is the walking track, and 108 is the bent plate chain;

[0072] 210 is the front slope bridge, 211 is the sixth oil cylinder, 212 is H-shaped steel, 213 is threaded steel, 220 is the rear slope bridge, and 221 is the seventh oil cylinder;

[0073] 300 is the rear walking mechanism, 301 is the walking support seat, 302 is the solid rubber tire, 303 is the hydraulic motor, 304 is the lifting platform, 305 is the lifting inner sleeve, 306 is the lifting outer sleeve, and 307 is the first oil cylinder;

[0074] 400 is the front support leg assembly, 401 is the outer sleeve of the first support leg, 402 is the inner sleeve of the first support leg, 403 is the second oil cylinder, 404 is the third oil cylinder, 405 is the cross bracing beam, 406 is the heightening support leg, 407 is the U-shaped ferrule, 408 is the inclined lead screw, and 409 is the peephole;

[0075] 500 is the rear support leg assembly, 501 is the sliding seat, 502 is the lateral base, and 503 is the fourth oil cylinder;

[0076] 600 is the walking trolley, 601 is the trolley body, 602 is the walking leg, 6021 is the outer sleeve of the second leg, 6022 is the inner sleeve of the second leg, 6023 is the fifth oil cylinder, 603 is the main bridge load-bearing rail wheel, 604 is the side block wheel, 605 is the trolley walking rail wheel, and 606 is the limit pin shaft;

[0077] 701 is a first hydraulic and electronically controlled component, and 702 is a second hydraulic and electronically controlled component. DETAILED DESCRIPTION

[0078] The following will be combined with the drawings of specific embodiments of the present invention to clearly and completely describe the exemplary scheme of the embodiment of the present invention. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field.

[0079] In the description of the present invention, it should be understood that the expressions “first” and “second” are used to describe the various elements of the present invention and do not represent any limitation of order, quantity or importance, but are only used to distinguish one component from another.

[0080] It should be noted that when one element is “connected”, “coupled” or “connected” to another element, it may mean that they are directly connected, coupled or connected, but it should be understood that there may be intermediate elements between the two; that is, the positional relationships of direct connection and indirect connection are covered.

[0081] It should be noted that the use of "a" or "an" and similar words does not necessarily indicate a quantitative limitation. "Include" or "comprising" and similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects.

[0082] It should be noted that terms such as "up", "down", "left" and "right" indicating orientation or positional relationship are only used to indicate relative positional relationship. This is for the convenience of describing the present invention and does not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0083] See also Figure 1-Figure 11 A large-span all-hydraulic tire walking-type tunnel invert trestle comprises a main bridge 100, a front slope bridge 210, a rear slope bridge 220, a rear walking mechanism 300 and a walking trolley 600. Support legs are arranged at the bottom of the main bridge 100, the front slope bridge 210 is arranged at the front end of the main bridge 100; the rear slope bridge 220 is arranged at the rear end of the main bridge 100; the rear walking mechanism 300 is arranged at the rear end of the main bridge 100, and drives the main bridge 100 to move; walking legs 602 are arranged at the lower part of the walking trolley 600, and the walking trolley 600 and the main bridge 100 can move relative to each other; when the rear walking mechanism 300 drives the main bridge 100 to move, the walking trolley 600 supports the ground, the front end of the main bridge 100 is supported on the walking trolley 600, and moves forward relative to the walking trolley 600.

[0084] The main bridge 100 includes at least a first section 101, a second section 102 and a third section 103. The front slope bridge 210 is hinged at the end of the first section 101. A sixth oil cylinder 211 is arranged between the front slope bridge 210 and the first section 101. The sixth oil cylinder 211 controls the flipping action of the front slope bridge 210. The lower end of the flipping angle can contact the top support at the bottom of the invert arch, and the upper end of the flipping angle can form an angle of 40° with the horizontal plane, so that it can adapt to step excavation and full disconnection excavation; the rear slope bridge 220 is hinged at the end of the second section 102. A seventh oil cylinder 221 is arranged between the rear slope bridge 220 and the second section 102. The seventh oil cylinder 221 controls the flipping action of the rear slope bridge 220; the third section 103 is arranged between the first section 101 and the second section 102.

[0085] In this embodiment, the specific structure of the main bridge is as follows: the first section 101, the second section 102 and the third section 103 all include a box beam 104 and a cross beam 105 arranged symmetrically on both sides, the cross beam 105 is arranged between the two box beams 104, a walkway 106 is arranged on the cross beam 105, and a corbel corresponding to the cross beam 105 is also arranged at the lower part of the box beam 104, which can bear a part of the force transmitted by the cross beam, thereby improving the overall force of the main bridge and improving stability; the box beam 104 and the cross beam 105, and the cross beam 105 and the walkway 106 are all bolted; and the first section 101 and the third section 103, and the second section 102 and the third section 103 are bolted by the corresponding internal docking flange of the box beam 104 and the external supplementary connection flange. In actual use, according to different length requirements, any combination of sections can be performed, such as removing the third section in the middle, and directly docking the first section and the second section, so as to form a short trestle.

[0086] A hydraulic and electrical system is also provided in the present application. In order to avoid spatial interference between the layout of the hydraulic and electrical system and other structures, or interference during the operation of other components, the hydraulic and electrical system in this embodiment includes a first hydraulic and electrical control component 701 and a second hydraulic and electrical control component 702, wherein the first hydraulic and electrical control component 701 is arranged in the box girder 104 at one end of the main bridge, and is used to control the operation of the front slope bridge, rear slope bridge, support legs and other components at the front and rear ends of the main bridge; the second hydraulic and electrical control component 702 is arranged on the walking trolley 600, and controls the operation of the walking trolley 600, and the reciprocating motion of the walking trolley relative to the main bridge will not be affected or interfered.

[0087] Furthermore, the front and rear slope bridge frames in the above structure are composed of H-shaped steel 212, with threaded steel 213 welded on the surface to form an anti-skid surface for vehicles passing through. There is support under the rear slope bridge to shorten the span, optimize the structure, and increase the safety of vehicles passing through. The front slope bridge and the rear slope bridge are both hinged to the main bridge through pins. The length of the front slope bridge is about 8m, and the available space under the front slope bridge can be used for initial support operations; the symmetrical box beams and cross beams on the main bridge are bolted, and walkways are laid on the cross beams, and the walkways are bolted to the cross beams. It is not only easy to transport, but also easy to assemble and combine, with convenient overall turnover, high flexibility and strong adaptability.

[0088] The rear traveling mechanism 300 includes a traveling support seat 301, traveling wheels and a traveling driving unit. The traveling wheels are arranged on the traveling support seat 301. The traveling driving unit drives the traveling wheels to move and drives the main bridge 100 to move. The traveling wheels are solid rubber tires 302 to prevent the cast invert arch from being crushed. The traveling driving unit is a hydraulic motor 303. The traveling driving unit and the traveling wheels are driven by matching meshing gears. The gear transmission reduces speed and increases torque. The traveling speed is 3-10m / min to ensure the stability of the travel. Furthermore, a lifting platform 304 is arranged on the top of the walking support seat 301, and a matching lifting inner sleeve 305 and a lifting outer sleeve 306 are arranged between the walking support seat 301 and the lifting platform 304, and a first oil cylinder 307 is arranged between the lifting inner sleeve 305 and the lifting outer sleeve 306, so as to control the solid rubber tire to support the ground or leave the ground. When the main bridge needs to travel, the solid rubber tire needs to support the ground. When it is necessary to support construction work, the front supporting legs provide support, and the solid rubber tire is lifted off the ground.

[0089] The supporting legs in this embodiment include a front supporting leg assembly 400 and a rear supporting leg assembly 500 which are respectively arranged at the front and rear ends of the main bridge.

[0090] Specifically, in this embodiment, the front support leg assembly 400 includes a first leg outer sleeve 401, a first leg inner sleeve 402, a second cylinder 403 and a third cylinder 404. The two first leg outer sleeves 401 are correspondingly arranged on both sides of the main bridge 100. The first leg inner sleeve 402 is slidably sleeved in the first leg outer sleeve 401. A heightening leg 406 is arranged at the bottom of the first leg inner sleeve 402. The second cylinder 403 drives the first leg outer sleeve 401 and the first leg inner sleeve 402 to move relative to each other. Sliding action: A cross brace beam 405 is arranged between the outer sleeves 401 of the two first legs, and the main bridge 100 is slidably arranged on the cross brace beam 405. Preferably, a U-shaped sleeve 407 is arranged at the bottom of the main bridge, and the cross brace beam 405 is passed through the U-shaped sleeve 407, which not only plays a role of limiting support, but also facilitates assembly. The third oil cylinder 404 is arranged between the cross brace beam 405 and the main bridge 100, and is used to drive the relative movement of the main bridge 100 and the cross brace beam 405, so as to realize the lateral movement of the front end of the main bridge. In order to improve its stability, an inclined screw is also provided. The two inclined screws are symmetrically arranged between the two ends of the cross bracing beam and the outer sleeves of the two first legs on both sides of the main bridge (depending on the height, the lower end of the inclined screw can also be arranged on the raised leg or the inner sleeve of the first leg). The specific structure of the inclined screw is as follows: the inclined screw 408 includes a forward-rotating screw, a reverse-rotating screw and an adjustment sleeve located in the middle. The inclined screw can be extended or shortened by rotating the adjustment sleeve. A peephole 409 is opened on the adjustment sleeve for observing the position of the screw.

[0091] The rear support leg assembly 500 in this embodiment includes a sliding seat 501, a transverse base 502 and a fourth oil cylinder 503. The sliding seat 501 is arranged at the bottom of the main bridge 100; the sliding seat 501 is slidably arranged on the transverse base 502; the fourth oil cylinder 503 is arranged between the sliding seat 501 and the transverse base 502, and drives the sliding seat 501 and the transverse base 502 to move relative to each other. Sliding seats and transverse bases are arranged on the left and right sides of the main bridge, and the rear end of the main bridge is driven to move laterally through the synchronous action of the two fourth oil cylinders.

[0092] The walking trolley 600 includes a trolley body 601, walking legs 602 and a walking assembly. The main bridge 100 is supported and arranged on the trolley body 601. In order to ensure the smooth movement of the main bridge on the trolley body, a plurality of main bridge load-bearing rail wheels 603 are arranged on the trolley body 601, so that the box girder of the main bridge 100 can be matched and fitted with the rolling support on the main bridge load-bearing rail wheels 603 to achieve rolling support. At this time, the front end of the main bridge can be ensured to achieve stable support and relative movement through the trolley body during the walking process of the main bridge; in this embodiment, the walking legs 602 are arranged at each end corner of the trolley body 601, and the walking legs 602 are lifting legs.

[0093] Since not only the main bridge is needed to support the walking trolley for walking, but also the walking trolley needs to reciprocate on the main bridge after the main bridge is supported and stabilized by the front supporting leg assembly and the rear supporting leg assembly, a walking assembly is also required to be provided. The walking assembly is used to drive the trolley body 601 to reciprocate back and forth on the main bridge 100.

[0094] Preferably, the walking leg 602 in this embodiment includes a second leg outer sleeve 6021, a second leg inner sleeve 6022 and a fifth cylinder 6023. The second leg inner sleeve 6022 is slidably arranged in the second leg outer sleeve 6021. A heightening leg 406 is arranged at the bottom of the second leg inner sleeve 6022. The heightening leg here can also realize the telescopic function, so that the height adjustment range is larger. The heightening leg is arranged by the telescopic sleeve and the limit pin 606; the fifth cylinder 6023 drives the second leg outer sleeve 6021 and the second leg inner sleeve 6022 to slide relative to each other; the trolley body 601 is fixedly arranged between multiple second leg outer sleeves 6021, and a side stopper wheel 604 is also arranged on the second leg outer sleeve 6021. The side rolling support of the main bridge 100 is supported on multiple The walking assembly is arranged on the top of the walking legs 602, and the walking assembly includes a trolley walking track wheel 605, a hydraulic motor and a main drive sprocket. A walking track 107 corresponding to the trolley walking track wheel and a bent plate chain 108 corresponding to the main drive sprocket are arranged on the top of the main bridge 100. The walking track 107 adopts two rectangular tracks arranged side by side on the box beams on both sides of the main bridge. A cross brace can also be arranged on the two walking legs on the same side. The hydraulic motor is fixed on the cross brace and drives the sprocket to rotate through gear transmission, and then the sprocket is engaged with the bent plate chain, so as to convert the rotational motion into linear motion, thereby driving the reciprocating motion of the trolley body on the main bridge, which can not only be used to transport the template, but also can play a step-changing support when the main bridge moves, so as to effectively ensure the stability of the main bridge operation. In order to avoid dust accumulation on the bent plate chain that is inconvenient to clean, a heightening seat is arranged at the lower part of the bent plate chain, and the heightening seat is fixed on the box beam, and the bent plate chain is connected to the heightening seat by bolts.

[0095] During the actual construction process, the present application can have multiple states; when on a plane without an inverted arch, the heightening legs in the front supporting leg assembly and the heightening legs of the walking trolley can be removed; when there is a certain height difference of the inverted arch or the height difference is large, the height difference of the excavation of inverted arches of different thicknesses can be adapted by adjusting the extension and retraction amount of each leg, and you can also choose to increase the heightening legs to improve its adaptability and convenience of operation.

[0096] The present application also discloses a construction method of a large-span fully hydraulic tire walking tunnel inverted arch trestle, which uses the large-span fully hydraulic tire walking tunnel inverted arch trestle to perform construction work, specifically comprising the following steps:

[0097] a. Assemble in the corresponding sections, complete the installation and commissioning of the large-span fully hydraulic tire walking tunnel invert trestle, and carry out construction work in the corresponding sections;

[0098] b. After the construction of this section is completed, lift the front slope bridge, rear slope bridge and supporting legs, and support the main bridge through the rear walking mechanism and walking trolley;

[0099] c. The rear walking mechanism is driven to move, driving the main bridge to move forward relative to the walking trolley. After reaching the set distance S, the main bridge is supported by the supporting legs, the walking legs of the walking trolley are retracted, and the walking trolley is driven to move forward on the main bridge;

[0100] When the set distance S of a single walk is less than the distance between two adjacent construction sections, repeat steps b and c until the large-span fully hydraulic tire walking tunnel arch trestle moves to the set position, and then carry out construction work in the next section.

[0101] This application can realize a 24m inverted arch free operation space, with strong versatility and high degree of automation. In order to ensure the stability of the main bridge during movement, the general single step length is 6m, that is, the distance S is set to 6m, and the distance between two adjacent construction sections is generally 12m, so two step changes are required in a single movement. The construction of this application can be carried out across multiple sections, and overcomes the problem that the traditional construction cycle is limited by the setting time of concrete. At the same time, this application has stronger adaptability and high flexibility, and has new breakthroughs in large-span construction operations, and has higher construction efficiency and convenience during application.

[0102] The preferred embodiments for implementing the present invention have been described in detail above, but it should be understood that the role of these embodiments is only to exemplify, and is not intended to limit the scope, applicability or configuration of the present invention in any way. The protection scope of the present invention is defined by the attached claims and their equivalents. A person of ordinary skill in the art can make many changes to the above embodiments under the guidance of the present invention, and these changes all fall within the protection scope of the present invention.

Claims

1. A large-span fully hydraulic tire walking tunnel invert trestle, characterized in that: include: A main bridge, with support legs provided at the bottom of the main bridge; A front slope bridge is arranged at the front end of the main bridge, and the front slope bridge can rotate and swing from the bottom of the invert to an angle of 40° above the horizontal line; A rear slope bridge, which is arranged at the rear end of the main bridge; A rear traveling mechanism, which is arranged at the rear end of the main bridge and drives the main bridge to move; and A walking trolley, wherein a walking leg is arranged at the lower part of the walking trolley, and the walking trolley and the main bridge can move relative to each other; When the rear walking mechanism drives the main bridge to move forward, the walking trolley supports the ground, and the front end of the main bridge is supported on the walking trolley and moves forward relative to the walking trolley; The main bridge at least includes a first section, a second section and a third section, the front slope bridge is hingedly arranged at the end of the first section, a sixth oil cylinder is arranged between the front slope bridge and the first section, and the sixth oil cylinder controls the flipping action of the front slope bridge; The rear slope bridge is hingedly arranged at the end of the second section, a seventh oil cylinder is arranged between the rear slope bridge and the second section, and the seventh oil cylinder controls the turning action of the rear slope bridge; and The third section is arranged between the first section and the second section, and the first section and the third section, as well as the second section and the third section, are bolted together through correspondingly arranged internal butt flanges and external supplementary connection flanges of the box beam; The support leg comprises a front support leg assembly and a rear support leg assembly respectively arranged at the front and rear ends of the main bridge; The front supporting leg assembly comprises: The outer sleeve of the first leg, two of the first leg outer sleeves are correspondingly arranged on both sides of the main bridge, a cross brace beam is arranged between the two first leg outer sleeves, the main bridge is matched and slidably arranged on the cross brace beam, and an inclined lead screw is arranged between the lower part of both ends of the cross brace beam and each of the outer sleeves of the first leg, and the two inclined lead screws are symmetrically arranged between the two ends of the cross brace beam and the two first leg outer sleeves on both sides of the main bridge; A first leg inner sleeve, which is slidably sleeved in the first leg outer sleeve, and a heightened leg is arranged at the bottom of the first leg inner sleeve; A second oil cylinder drives the first leg outer sleeve and the first leg inner sleeve to slide relative to each other; and a third oil cylinder, which is disposed between the cross bracing beam and the main bridge and drives the relative movement of the main bridge and the cross bracing beam; The rear support leg assembly comprises: A sliding seat, which is arranged at the bottom of the main bridge; A transverse movement base, the sliding seat being slidably arranged on the transverse movement base; and The fourth oil cylinder is arranged between the sliding seat and the transverse moving base, and drives the sliding seat and the transverse moving base to move relative to each other.

2. The large-span fully hydraulic tire walking tunnel invert trestle according to claim 1 is characterized in that: The rear walking mechanism comprises: Walking support seat; Traveling wheels, which are arranged on the travel supporting seat; and The travel drive unit drives the travel wheels to move and drives the main bridge to move.

3. The large-span fully hydraulic tire walking tunnel invert trestle according to claim 2 is characterized in that: The travel wheel is a solid rubber tire; the travel drive unit is a hydraulic motor, and the travel drive unit and the travel wheel are driven by matching meshing gears.

4. The large-span fully hydraulic tire walking tunnel invert trestle according to claim 2 is characterized in that: A lifting platform is arranged on the top of the walking support seat, a matching lifting inner sleeve and a lifting outer sleeve are arranged between the walking support seat and the lifting platform, and a first oil cylinder is arranged between the lifting inner sleeve and the lifting outer sleeve.

5. The large-span fully hydraulic tire walking tunnel invert trestle according to claim 1 is characterized in that: The walking trolley comprises: A trolley body, the main bridge support is arranged on the trolley body; Walking legs, which are arranged at each end corner of the trolley body, and the walking legs are lifting legs; and A walking assembly drives the trolley body to move back and forth on the main bridge.

6. The large-span fully hydraulic tire walking tunnel invert trestle according to claim 5 is characterized in that: The trolley body is provided with a main bridge load-bearing rail wheel, and the main bridge is matched and fitted with rolling support on the main bridge load-bearing rail wheel; The walking legs include: Second leg outer sleeve; A second leg inner sleeve, which is slidably disposed in the second leg outer sleeve, and a heightened leg is disposed at the bottom of the second leg inner sleeve; and A fifth oil cylinder drives the outer sleeve of the second leg and the inner sleeve of the second leg to slide relative to each other; The trolley body is fixedly arranged between multiple outer sleeves of the second legs, and side stop wheels are also arranged on the outer sleeves of the second legs. The side of the main bridge is rolled and supported between the multiple side stop wheels; the walking assembly is arranged on the top of the walking legs, and the walking assembly includes a trolley walking track wheel, a hydraulic motor and a main drive sprocket, and a walking track corresponding to the trolley walking track wheel and a bent plate chain corresponding to the main drive sprocket are arranged on the top of the main bridge; a heightening seat is arranged between the bent plate chain and the main bridge.

7. The large-span fully hydraulic tire walking tunnel invert trestle according to claim 1 is characterized in that: The first section, the second section and the third section each include: symmetrically arranged box girders; and A crossbeam is arranged between the two box beams, a walkway is arranged on the crossbeam, and a corbel corresponding to the crossbeam is also arranged at the lower part of the box beam; The box beam and the cross beam, and the cross beam and the walkway are fixed by bolts; It also includes a hydraulic and electrical system, which includes a first hydraulic and electrical control component and a second hydraulic and electrical control component. The first hydraulic and electrical control component is arranged in a box beam at one end of the main bridge; the second hydraulic and electrical control component is arranged on the walking trolley and controls the movement of the walking trolley.

8. A construction method for a large-span fully hydraulic tire walking tunnel invert trestle, characterized in that: The large-span fully hydraulic tire walking tunnel invert trestle described in any one of claims 1 to 7 is used for construction, which specifically comprises the following steps: a. Assemble in the corresponding sections, complete the installation and commissioning of the large-span fully hydraulic tire walking tunnel invert trestle, and carry out construction work in the corresponding sections; b. After the construction of this section is completed, the front slope bridge, rear slope bridge and supporting legs are lifted, and the main bridge is supported by the rear walking mechanism and walking trolley; c. Drive the rear walking mechanism to move, drive the main bridge to move forward relative to the walking trolley, and after reaching a set distance S, the main bridge is supported by the supporting legs, the walking legs of the walking trolley are retracted, and the walking trolley is driven to move forward on the main bridge; When the set distance S of a single walk is less than the distance between two adjacent construction sections, repeat steps b and c until the large-span fully hydraulic tire walking tunnel invert trestle moves to the set position, and then carry out construction work in the next section.

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