A mobile slot forming machine and an aqueduct construction method

Abstract

The application relates to a mobile aqueduct forming machine and an aqueduct construction method, which comprises at least three-span long main beams, an outer form plate installed at the bottom of the main beams and used for pouring and forming an aqueduct, the length of the outer form plate along the length direction of the main beams is at least two-span long, the length of the main beams is at least one span longer than the length of the outer form plate, and a plurality of support devices are used for supporting and driving the main beams to pass through holes. The device can realize pouring of at least two-span long aqueducts at one time through the at least three-span long main beams and the at least two-span long outer form plate, and the main beams can be moved by at least two spans long through the support devices after pouring is completed, so that the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of civil engineering construction technology, and in particular to a mobile trenching machine and a method for constructing aqueducts. Background Technology

[0002] Aqueducts are elevated water conveyance structures that transport water across rivers, roads, sluices, valley mouths, etc. They are among the most widely used intersecting structures in canal systems. Concrete arch aqueducts are widely used due to their ability to fully utilize the compressive strength of concrete and their low cost. With the development of social demand, arch aqueducts are currently developing towards large-span continuous arches.

[0003] The construction of the aqueduct requires the use of a trenching machine on the bridge piers. However, the existing trenching machine can only pour one span at a time. After pouring the aqueduct, the trenching machine needs nearly a month of curing time, which leads to a long construction cycle. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a mobile trenching machine and a method for constructing aqueducts, which solves the technical problem that the trenching machine can only pour one span at a time, resulting in low work efficiency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] A mobile trenching machine, comprising:

[0009] Main beams with at least three spans in length;

[0010] The outer formwork is installed at the bottom of the main beam for casting the aqueduct; the length of the outer formwork along the length of the main beam is at least two spans.

[0011] The length of the main beam is at least one span longer than the length of the outer formwork;

[0012] Multiple support devices are used to support and drive the main beam through the hole.

[0013] Preferably, the support device includes a plurality of support legs mounted on the main beam;

[0014] The support leg has two states: supporting the main beam and hanging on the main beam;

[0015] When the supporting leg is in the state of supporting the main beam, the bottom of the supporting leg abuts against the pier.

[0016] Preferably, a first telescopic actuator is installed at the bottom of the support leg;

[0017] The first telescopic actuator is used to switch the support leg between two states: supporting the main beam and hanging on the main beam.

[0018] Preferably, the support device further includes at least two drive devices;

[0019] The drive device includes a support state, a self-propelled state, and a drive state;

[0020] When the drive device is in a supported state, the bottom end of the drive device abuts against the top end of the bridge pier.

[0021] When the drive device is in the self-propelled state, the drive device can be suspended at the bottom of the main beam and can move along the main beam;

[0022] When the driving device is in the driving state, the bottom of the driving device can abut against the aqueduct and drive the main beam through the hole.

[0023] Preferably, the driving device includes:

[0024] The first leg capable of contacting or separating from the bridge pier;

[0025] Installed on the top of the first support leg and capable of moving along the main beam, the first sliding trolley;

[0026] The first sliding trolley includes a steel wheel mounted on the top of the first sliding trolley and capable of driving the main beam through the hole.

[0027] Preferably, the driving device further includes a second telescopic driver mounted on the top of the first sliding trolley;

[0028] The top of the second telescopic actuator can abut or separate from the bottom of the main beam.

[0029] Preferably, the drive device includes a suspension device for suspending it at the bottom of the main beam;

[0030] When the drive device is in the support state and the drive state, the suspension device is separated from the main beam;

[0031] When the drive device is in self-propelled mode, the suspension device can drive the drive device to slide along the main beam.

[0032] Preferably, the suspension device includes self-propelled wheels capable of moving autonomously on the main beam;

[0033] The self-propelled wheels are connected to the first sliding trolley via a walking bracket.

[0034] Preferably, the driving device further includes a first rotary drive for driving the self-propelled wheel to rotate;

[0035] The second rotary drive drives the steel wheel to rotate.

[0036] Preferably, the support device further includes at least one auxiliary support leg capable of being suspended from the bottom of the main beam;

[0037] The auxiliary support leg is installed at the front end of the main beam;

[0038] The auxiliary support leg has three states: supporting the main beam, walking along the bottom of the main beam, and driving the main beam.

[0039] When the auxiliary support leg is supporting the main beam, the bottom end of the auxiliary support leg abuts against the pier. When the auxiliary support leg is driving the main beam, the bottom end of the auxiliary support leg abuts against the pier, the top end abuts against the main beam, and it can drive the main beam to move forward.

[0040] Preferably, the outer template includes:

[0041] Half-formwork panels are respectively hinged to the front and rear sides of the main beam;

[0042] Multiple fourth telescopic actuators are hinged to the front and rear sides of the main beam; the telescopic ends of the fourth telescopic actuators are hinged to the half-formwork located on the same side of the main beam.

[0043] The fourth telescopic actuator drives the half-formwork located on the same side of the main beam to deflect, so that the half-formwork on the front and rear sides of the main beam can be closed or separated.

[0044] Preferably, it also includes multiple operating platforms for supporting operators;

[0045] The multiple operating platforms are respectively installed at the bottom of the semi-template.

[0046] Preferably, it also includes multiple electric hoists for lifting heavy objects;

[0047] The multiple electric hoists are respectively installed on the front and rear sides of the main beam.

[0048] Preferably, it also includes a shade canopy for blocking sunlight and rain;

[0049] The canopy is installed at the top of the main beam.

[0050] The present invention also provides a method for constructing an aqueduct using a mobile trenching machine based on any of the above-mentioned schemes, characterized by comprising the following steps:

[0051] S1. Pour concrete into the outer formwork and cure it to form the aqueduct.

[0052] S2. Demolding of the outer template, the support device can drive the main beam to move forward at least two spans.

[0053] Preferably, step S2 includes:

[0054] S21. The supporting leg is in the state of supporting the main beam, the at least two driving devices are in the self-propelled state, the first leg moves forward by one span, and the first leg is placed above the pier.

[0055] The auxiliary support leg is in a supporting state for the main beam;

[0056] S22, The bottom of the auxiliary leg body abuts against the pier, and the auxiliary leg is in the state of driving the main beam;

[0057] The bottom of the first leg abuts against the pier, the driving device is in driving mode, and the steel wheel drives the main beam to move forward by one span.

[0058] S23. The supporting leg is in the state of supporting the main beam, the driving device is in the state of supporting, the auxiliary leg is in the state of walking along the bottom of the main beam, and the auxiliary leg walks forward along the main beam for one span.

[0059] S24. Repeat steps S21 to S23 at least once.

[0060] (III) Beneficial Effects

[0061] The beneficial effects of this invention are:

[0062] (1) The present invention can achieve the casting of at least two spans of aqueduct in one go by using a main beam with at least three spans and an outer formwork with at least two spans; after casting, the main beam can be moved at least two spans by a support device to improve work efficiency.

[0063] (2) The present invention enables the main beam to move forward automatically or stop at an appropriate position through the cooperation of the drive device and the support leg, without the need to use an additional hoisting device to move the main beam, which is convenient to operate.

[0064] (3) The main beam of the present invention moves at the top of the drive device, while the drive device does not travel on the aqueduct. Compared with the prior art, this can reduce the damage to the aqueduct caused by the drive device traveling on the aqueduct and extend the service life of the aqueduct. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the overall structure of the mobile trenching machine of the present invention;

[0066] Figure 2 This is a schematic diagram of the drive device of the present invention;

[0067] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0068] Figure 4 This is a schematic diagram of the support leg of the present invention;

[0069] Figure 5 This is a schematic diagram of the outer template in the mold-closing state of the present invention;

[0070] Figure 6 This is a schematic diagram of the outer template parting state according to the present invention;

[0071] Figure 7 This is a schematic diagram of the auxiliary support leg of the present invention;

[0072] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0073] Figure 9 This is a schematic diagram of the state after the aqueduct is poured in Embodiment 2 of the present invention, and the driving device moves forward by one span.

[0074] Figure 10 This is a schematic diagram of the state of the main beam after it has moved forward by one span in Embodiment 2 of the present invention;

[0075] Figure 11 This is a schematic diagram of the state after the auxiliary support leg moves forward one span in Embodiment 2 of the present invention.

[0076] [Explanation of Labels in the Attached Image]

[0077] 1: Main beam; 2: Auxiliary support leg; 3: Support leg; 5: Drive device; 7: Outer formwork; 8: Operating platform; 9: First sliding trolley; 10: Second sliding trolley; 11: Column; 12: First telescopic actuator; 13: Half formwork; 14: Fourth telescopic actuator; 15: Auxiliary support leg body; 16: Third telescopic actuator; 17: Canopy; 18: Electric hoist; 19: Pin shaft; 20: Drive wheel; 91: Self-propelled wheel; 92: Steel wheel; 93: Second telescopic actuator. Detailed Implementation

[0078] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0079] Example 1

[0080] like Figure 1As shown, a mobile trenching machine includes: a main beam 1 with a length of at least three spans; an outer template 7 installed at the bottom of the main beam 1 for casting the aqueduct; the outer template 7 having a length of at least two spans along the length direction of the main beam 1; the length of the main beam 1 being at least one span longer than the length of the outer template 7; and multiple support devices for supporting and driving the main beam 1 through holes. The length direction of the main beam 1 is as shown in the figure. Figure 1 The left and right directions are the same as the length direction of the main beam 1.

[0081] Aqueducts are elevated water conveyance structures that transport water across rivers, roads, sluices, valley mouths, etc. They are among the most widely used intersecting structures in canal systems. Concrete arch aqueducts are widely used due to their ability to fully utilize the compressive strength of concrete and their low cost. With the development of social demand, arch aqueducts are currently developing towards large-span continuous arches.

[0082] The construction of the aqueduct requires the use of a trenching machine on the bridge piers. However, the existing trenching machine can only pour one span at a time. After pouring the aqueduct, the trenching machine needs nearly a month of curing time, which leads to a long construction cycle.

[0083] This solution, through a main beam 1 with a span of at least three and an outer formwork 7 with a span of at least two, can achieve the casting of an aqueduct with a span of at least two at a time. After casting, the main beam 1 can be moved at least two spans through the support device to improve work efficiency.

[0084] In this embodiment, the main beam 1 is three spans long, and the outer formwork 7 is two spans long. Of course, in other embodiments of this solution, the main beam 1 can also be four or five spans long, and the outer formwork 7 can also be three or four spans long, with the main beam 1 being at least one span longer than the outer formwork 7.

[0085] In this embodiment, refer to Figure 1 The left end of the aqueduct is the end that has been poured, and the right end of the aqueduct is the end to be poured. In this embodiment, the extension direction of the end of the aqueduct to be poured is referred to as "front".

[0086] like Figure 1 As shown, specifically, the support device includes multiple support legs 3 installed on the main beam 1. The support legs 3 have two states: supporting the main beam 1 and hanging from the main beam 1. When supporting the main beam 1, the bottom of the support leg 3 abuts against the pier. During use, when pouring and curing the aqueduct, the support legs 3 are in the state of supporting the main beam 1. After the pouring and curing of the aqueduct is completed, when it is necessary to move the main beam 1, the support legs 3 are hung from the main beam 1 and move forward with the main beam 1. In this embodiment, moving the main beam 1 forward means moving the main beam 1 towards the direction of the aqueduct to be poured, as shown in the reference... Figure 1 "Middle" refers to the main beam 1 moving to the right.

[0087] In this embodiment, the support device includes four support legs 3 installed on the main beam 1, with each of the four support legs 3 corresponding to one of the two piers. The four support legs 3 are symmetrically installed on the front and rear sides of the main beam 1.

[0088] like Figure 4 As shown, in this embodiment, the support leg 3 includes a corbel and a conical column 11, with the diameter of the column 11 decreasing sequentially from top to bottom. Of course, the column 11 in this solution is not limited to a conical structure; the column 11 in other embodiments of this solution can also be cylindrical, pyramidal, or cuboid.

[0089] like Figure 4 As shown, furthermore, a first telescopic actuator 12 is installed at the bottom of the support leg 3. The first telescopic actuator 12 is used to switch the support leg 3 between two states: supporting the main beam 1 and being suspended from the main beam 1. In use, when the support leg 3 is in the state of supporting the main beam 1, the first telescopic actuator 12 extends, and the bottom of the first telescopic actuator 12 abuts against the top of the pier. When the support leg 3 is in the state of being suspended from the main beam 1, the first telescopic actuator 12 retracts, the bottom end of the first telescopic actuator 12 separates from the pier, and the first telescopic actuator 12 moves forward with the main beam 1.

[0090] In this embodiment, the first telescopic actuator 12 is a hydraulic cylinder. Of course, the first telescopic actuator 12 in this solution is not limited to the hydraulic cylinder telescopic structure. As long as it can extend or shorten so that the support leg 3 supports the main beam 1 or is suspended on the main beam 1, it is acceptable. In other embodiments of this solution, the first telescopic actuator 12 can also be an electric telescopic rod or a lead screw structure.

[0091] like Figure 1 Furthermore, the support device also includes at least two driving devices 5. Each driving device 5 has a supporting state, a self-propelled state, and a driving state. When in the self-propelled state, the driving device 5 is suspended from the bottom of the main beam 1 and can move along the main beam 1. When in the driving state, the bottom of the driving device 5 abuts against the aqueduct and can drive the main beam 1 through the hole. When in the supporting state, the bottom of the driving device 5 abuts against the top of the aqueduct. In this embodiment, during use, during the pouring and curing of the aqueduct, the driving device 5 is in the supporting state, that is, the driving device 5 supports the main beam 1. After the aqueduct is poured and cured, when the main beam 1 needs to move forward, the support leg 3 is in the state of supporting the main beam 1, and the drive device 5 is in the self-propelled state. That is, the drive device 5 moves forward along the main beam 1 for one span. Then, the drive device 5 is put into the driving state, and the support leg 3 is in the state of being suspended on the main beam 1. The drive device 5 drives the main beam 1 to move forward for one span. The above method is repeated until the main beam 1 drives all the outer formwork 7 to move out of the poured aqueduct.

[0092] Alternatively, during the pouring and curing of the aqueduct, the drive device 5 is in a supporting state, meaning it supports the main beam 1. After the pouring and curing of the aqueduct is completed, when the main beam 1 needs to move forward, the support leg 3 is in a supporting state, and the drive device 5 is in a self-propelled state, meaning the drive device 5 moves forward along the main beam 1 for two spans. Then, the drive device 5 is put into a driving state, the support leg 3 is suspended on the main beam 1, and the drive device 5 drives the main beam 1 to move forward for two spans.

[0093] like Figure 1 As shown in this embodiment, the support device includes two drive devices 5. During the pouring and curing of the aqueduct, the drive devices 5 are in a support state. At this time, both drive devices 5 are placed at the bottom left end of the main beam 1 and are located above two adjacent piers.

[0094] Furthermore, such as Figure 2 and 3 As shown, the driving device 5 includes: a first leg that can abut or separate from the pier, a first sliding trolley 9 installed on the top of the first leg and capable of moving along the main beam 1, the first sliding trolley 9 including a steel wheel 92 installed on the top of the first sliding trolley 9 and capable of driving the main beam 1 through the hole.

[0095] In this invention, the main beam 1 moves at the top of the driving device 5, while the driving device 5 does not travel on the aqueduct. Compared with the prior art, this can reduce the damage to the aqueduct caused by the driving device 5 traveling on the aqueduct and extend the service life of the aqueduct.

[0096] Furthermore, such as Figure 3 As shown, the drive unit 5 also includes a second telescopic actuator 93 mounted on the top of the first sliding trolley 9; the top of the second telescopic actuator 93 can abut or separate from the bottom of the main beam 1. The second telescopic actuator 93 enables the drive unit 5 to switch between a supported state, a self-propelled state, or a driven state.

[0097] In this embodiment, when the drive device 5 is in the support state, the telescopic end of the second telescopic actuator 93 extends and abuts against the bottom of the main beam 1. When the drive device 5 is in the driving state, the telescopic end of the second telescopic actuator 93 retracts and separates from the bottom of the main beam 1, and the steel wheel 92 abuts against the bottom of the main beam 1. When the drive device 5 is in the self-propelled state, the telescopic end of the second telescopic actuator 93 retracts and separates from the bottom of the main beam 1.

[0098] In this embodiment, the second telescopic actuator 93 used is a hydraulic cylinder. When the piston rod of the second telescopic actuator 93 extends, the bottom end of the first leg abuts against the aqueduct, and the drive device 5 is in a supporting state or a driving state. When the piston rod of the second telescopic actuator 93 retracts, the bottom end of the first leg separates from the aqueduct, the drive device 5 is suspended at the bottom of the main beam 1, and the drive device 5 is in a self-propelled state.

[0099] Of course, the second telescopic actuator 93 in this solution is not limited to the hydraulic cylinder as a telescopic structure. As long as it can extend or shorten so that the bottom of the drive device 5 abuts against or separates from the aqueduct, it is acceptable. In other embodiments of this solution, the second telescopic actuator 93 can also be an electric telescopic rod or a lead screw structure.

[0100] like Figure 3 As shown, the drive device 5 includes a hanging device for suspending it at the bottom of the main beam 1; when the drive device 5 is in the support state and the drive state, the hanging device is separated from the main beam 1; when the drive device 5 is in the self-propelled state, the hanging device can drive the drive device 5 to slide along the main beam 1.

[0101] Specifically, when the drive device 5 is in the supporting state, the supporting leg 3 is supporting the main beam 1, that is, the telescopic end of the first telescopic actuator 12 extends, the bottom of the supporting leg 3 abuts against the pier, the bottom of the first leg abuts against the aqueduct, the telescopic end of the second telescopic actuator 93 extends and supports the main beam 1, and the steel wheel 92 and the hanging device are separated from the main beam 1. When the drive device 5 is in the driving state, the supporting leg 3 is suspended on the main beam 1, that is, the telescopic end of the first telescopic actuator 12 retracts, the telescopic end of the second telescopic actuator 93 retracts, the bottom of the main beam 1 abuts against the bottom of the steel wheel 92, and the hanging device is separated from the main beam 1. When the drive device 5 is in the self-propelled state, the supporting leg 3 is supporting the main beam 1, that is, the telescopic end of the first telescopic actuator 12 extends, separating the bottom of the first leg from the aqueduct, the telescopic end of the second telescopic actuator 93 retracts, and the hanging device drives the drive device 5 to move along the main beam 1.

[0102] like Figure 3 As shown, the suspension device 5 includes self-propelled wheels 91 that can move autonomously on the main beam 1; the self-propelled wheels 91 are connected to the first sliding trolley 9 via a walking bracket.

[0103] Furthermore, such as Figure 3 As shown, the drive device 5 also includes a first rotary drive that drives the self-propelled wheel 91 to rotate; and a second rotary drive that drives the steel wheel 92 to rotate.

[0104] In this embodiment, both the first rotary driver and the second rotary driver used are synchronous servo motors.

[0105] Specifically, when the drive device 5 is in self-propelled mode, the synchronous servo motor drives the self-propelled wheel 91 to walk along the main beam 1.

[0106] Furthermore, such as Figure 1 As shown, the support device also includes at least one auxiliary leg 2 that can be suspended from the bottom of the main beam 1; the auxiliary leg 2 is installed at the front end of the main beam 1; the auxiliary leg 2 has three states: supporting the main beam 1, traveling along the bottom of the main beam 1, and driving the main beam 1; when the auxiliary leg 2 is in the state of supporting the main beam 1, the bottom end of the auxiliary leg 2 abuts against the corresponding pier; when the auxiliary leg 2 is in the state of driving the main beam 1, the bottom end of the auxiliary leg 2 abuts against the pier, the top end abuts against the main beam 1, and it can drive the main beam 1 to move forward. During use, when the aqueduct is being poured or cured, the auxiliary support leg 2 is in the state of supporting the main beam 1. After the aqueduct is poured or cured, while the drive device 5 is driving the main beam 1 forward, the auxiliary support leg 2 is in the state of driving the main beam 1. After the drive device 5 and the auxiliary support leg 2 jointly drive the main beam 1 to move one or more spans, the auxiliary support leg 2 is suspended at the bottom of the main beam 1 and automatically moves forward along the bottom of the main beam 1 for the corresponding span, and finally stops above the pier.

[0107] In this embodiment, as Figure 1 As shown, there is one auxiliary support leg 2. When the auxiliary support leg 2 is supporting the main beam 1, it is located at the rightmost end of the main beam 1 and its bottom is in contact with the pier.

[0108] Furthermore, such as Figure 7 and 8 As shown, the auxiliary outrigger 2 includes: an auxiliary outrigger body 15; a second sliding trolley 10 mounted on the top of the auxiliary outrigger body 15; a third telescopic actuator 16 mounted on the top of the second sliding trolley 10; the top of the third telescopic actuator 16 can abut or separate from the main beam 1.

[0109] The top of the second sliding trolley 10 is equipped with a drive wheel 20 that drives the main beam 1 to move forward. The drive wheel 20 is driven by a synchronous servo motor.

[0110] The second sliding trolley 10 is equipped with auxiliary hanging devices on both the left and right sides of its top. In this embodiment, the auxiliary hanging devices are similar to the hanging structure and will not be described in detail here.

[0111] In this embodiment, when the auxiliary leg 2 is in the state of supporting the main beam 1, the bottom of the auxiliary leg 2 abuts against the pier, the third telescopic actuator 16 extends, and the top of the third telescopic actuator 16 abuts against the main beam 1, thus supporting the main beam 1; when the auxiliary leg 2 is in the state of walking along the bottom of the main beam 1, the third telescopic actuator 16 shortens so that the bottom of the auxiliary leg body 15 moves away from the corresponding pier, the auxiliary leg 2 is suspended at the bottom of the main beam 1, and the suspension device drives the auxiliary leg 2 to move forward along the main beam 1; when the auxiliary leg 2 is in the state of driving the main beam 1, the bottom of the auxiliary leg 2 abuts against the pier, the top of the drive wheel 20 abuts against the main beam 1, and drives the main beam 1 to move forward.

[0112] In this embodiment, the third telescopic actuator 16 used is a hydraulic cylinder. Of course, the third telescopic actuator 16 in this solution is not limited to hydraulic cylinder as a telescopic structure. As long as it can extend or shorten to enable the auxiliary support leg 2 to be in the state of supporting the main beam 1 or in the state of walking along the bottom of the main beam 1, it is acceptable. In other embodiments of this solution, the third telescopic actuator 16 can also be an electric telescopic rod or a lead screw structure.

[0113] Furthermore, such as Figure 5 and 6 As shown, the outer formwork 7 includes: half formwork 13 respectively hinged to the front and rear sides of the main beam 1, and multiple fourth telescopic actuators 14 hinged to the front and rear sides of the main beam 1. The telescopic ends of the fourth telescopic actuators 14 are hinged to the half formwork 13 located on the same side of the main beam 1. The fourth telescopic actuators 14 drive the half formwork 13 located on the same side of the main beam 1 to deflect so that the half formwork 13 on the front and rear sides of the main beam 1 can be closed or separated.

[0114] In this embodiment, the fourth telescopic actuator 14 is located inside the same-side half-formwork 13 (the interior of the outer formwork 7 is referred to as the "inner side"). In this embodiment, the outer formwork 7 also includes multiple pins 19 for fixing the formwork 13. During use, when pouring and curing the aqueduct, the fourth telescopic actuator 14 shortens, causing the two half-formworks 13 to close, and the half-formworks 13 are fixed by the pins 19 to keep them in the closed state. After pouring and curing are completed, the fourth telescopic actuator 14 extends, causing the half-formworks 13 on both sides of the main beam 1 to move away from each other, that is, to demold the aqueduct from the outer formwork 7.

[0115] In this embodiment, as Figure 5 and 6 As shown, the outer formwork 7 also includes multiple supports that are fixed to the front and rear sides of the main beam 1 respectively. The half formwork 13 and the fourth telescopic actuator 14 are both connected to the main beam 1 through the supports.

[0116] In this embodiment, multiple fourth telescopic actuators 14 located on the same side of the main beam 1 are evenly distributed along the length of the main beam 1 to ensure that the half template 13 is subjected to uniform force, preventing uneven force during use from causing the half template 13 to close or separate at different times, thus affecting the construction of the aqueduct.

[0117] In this embodiment, the fourth telescopic actuator 14 used is a synchronous hydraulic cylinder. Of course, the fourth telescopic actuator 14 in this solution is not limited to hydraulic cylinder as a telescopic structure. As long as it can extend or shorten to allow the half templates 13 on the front and rear sides of the main beam 1 to close or separate, it is acceptable. In other embodiments of this solution, the fourth telescopic actuator 14 can also be an electric telescopic rod or a lead screw structure.

[0118] Specifically, such as Figure 1 As shown, it also includes multiple operating platforms 8 for supporting operators; the multiple operating platforms 8 are respectively installed at the bottom of the semi-formwork 13. The operating platforms 8 facilitate the observation of the pouring or curing of the aqueduct by the staff.

[0119] In this embodiment, the operating platform 8 includes half platforms located on the front and rear sides of the main beam 1, which are fixedly connected to the half template 13 located on the same side of the main beam 1, and the operating platform 8 is formed as the half template 13 is closed, and separates as the half template 13 is opened.

[0120] Furthermore, such as Figures 4-6 As shown, it also includes multiple electric hoists 18 for lifting heavy objects; the multiple electric hoists 18 are respectively installed on the front and rear sides of the main beam 1. The electric hoists 18 facilitate the lifting of heavy objects during construction.

[0121] Further as Figure 5 and 6 As shown, it also includes a shade canopy 17 for shielding from sunlight and rain; the shade canopy 17 is installed at the top of the main beam 1. The shade canopy 17 can shield construction workers from sunlight and rain, so that the aqueduct can be constructed even in hot or rainy weather, thereby reducing the delay in the construction period caused by the weather.

[0122] In this embodiment, the shielding canopy 17 is fixed to the top of the main beam 1 by a mounting frame and is located above the outer formwork 7. Since the aqueduct needs to be poured or cured only where the outer formwork 7 is installed, requiring operation or inspection by personnel, the shielding canopy is not installed above the main beam 1 where the outer formwork 7 is not installed. Of course, the shielding canopy 17 in this solution is not limited to this installation method. In other embodiments of this solution, the shielding canopy 17 can also be installed along the length of the main beam 1.

[0123] In this embodiment, to ensure that the canopy 17 has sufficient strength, the bottom of the canopy 17 is connected to the bracket via a support rod.

[0124] Example 2

[0125] like Figures 9-11 As shown, this embodiment utilizes the mobile trenching machine aqueduct construction method of any of the above schemes, including the following steps:

[0126] In this embodiment, the main beam 1 has a three-span length, the outer formwork 7 has a two-span length and is installed at the right end of the main beam 1, there are two drive devices 5, and one auxiliary support leg 2.

[0127] S1. Concrete is poured into the outer formwork 7 and cured to form the aqueduct. At this time, the support leg 3 is in the state of supporting the main beam 1, that is, the first telescopic actuator 12 extends so that the bottom of the support leg 3 abuts against the top of the pier. The drive device 5 is in the supporting state, that is, the second telescopic actuator 93 extends so that the bottom of the first support leg abuts against the aqueduct. The two drive devices 5 are located at the left end of the main beam 1 and above the two adjacent piers respectively. The auxiliary support leg 2 is in the state of supporting the main beam 1, that is, the third telescopic actuator 16 extends so that the bottom of the auxiliary support leg body 15 abuts against the corresponding pier. The auxiliary support leg 2 is located at the right end of the main beam 1.

[0128] S2, Demolding of the outer formwork 7, the support device can drive the main beam 1 to move forward at least two spans.

[0129] In this embodiment, the support device can drive the main beam 1 to move forward by two spans.

[0130] Furthermore, step S2 includes:

[0131] like Figure 7 As shown, in S21, the supporting leg 3 is in the state of supporting the main beam 1, at least two driving devices 5 are in the state of self-propelled movement, the first leg moves forward by one span, and the first leg is placed above the pier; the auxiliary leg 2 is in the state of supporting the main beam 1.

[0132] In this embodiment, the support leg 3 is in the state of supporting the main beam 1, that is, the first telescopic actuator 12 extends so that the bottom of the support leg 3 abuts against the top of the pier; the two drive devices 5 are in the self-propelled state, that is, the piston rod of the second telescopic actuator 93 shortens, the bottom end of the first leg separates from the aqueduct, the drive device 5 is suspended at the bottom of the main beam 1, the first rotary actuator drives the self-propelled wheel 91 to rotate so that the drive device 5 moves along the bottom of the main beam 1 for one span, and the first leg is placed above the pier.

[0133] The auxiliary leg 2 is in the state of supporting the main beam 1. The bottom of the auxiliary leg 2 abuts against the pier. The third telescopic actuator 16 extends and the top of the third telescopic actuator 16 abuts against the main beam 1 to support the main beam 1.

[0134] like Figure 8As shown, in S22, the auxiliary leg 2 is in the state of driving the main beam 1, that is, the bottom of the auxiliary leg 2 is in contact with the pier, the third telescopic actuator 16 is shortened, the bottom end of the drive wheel 20 is in contact with the main beam 1, and the synchronous servo motor drives the drive wheel 20 to rotate, so as to drive the main beam 1 to move forward.

[0135] The drive device 5 is in the drive state, that is, the second telescopic drive 93 is extended, the bottom end of the first leg abuts against the aqueduct, the second rotary drive drives the steel wheel 92 to rotate, and the steel wheel 92 drives the main beam 1 to move forward by one span.

[0136] like Figure 9 As shown, in S23, the support leg 3 is in the state of supporting the main beam 1, that is, the first telescopic actuator 12 extends so that the bottom of the support leg 3 abuts against the top of the pier; the drive device 5 is in the supporting state, that is, when the piston rod of the second telescopic actuator 93 extends, the bottom end of the first leg abuts against the aqueduct; the auxiliary leg 2 is in the state of walking along the bottom of the main beam 1, that is, the third telescopic actuator 16 shortens so that the bottom of the auxiliary leg body 15 moves away from the corresponding pier, the auxiliary leg 2 is suspended at the bottom of the main beam 1, the suspension device drives the auxiliary leg 2 to move forward along the main beam 1, and after stopping above the pier corresponding to the right end of the main beam 1, the auxiliary leg 2 is in the state of supporting the main beam 1 again.

[0137] S24. Repeat steps S21 to S23 once in sequence.

[0138] Example 3

[0139] Unlike Embodiment 2, in S21, the supporting leg 3 is in the state of supporting the main beam 1, that is, the first telescopic actuator 12 extends so that the bottom of the supporting leg 3 abuts against the top of the pier; the two driving devices 5 are in the self-propelled state, that is, the second telescopic actuator 93 shortens, the bottom end of the first leg separates from the aqueduct, the driving device 5 is suspended at the bottom of the main beam 1, and the second rotary actuator drives the steel wheel 92 to rotate so that the driving device 5 moves along the bottom of the main beam 1 for one span, and the first leg is placed above the pier.

[0140] The auxiliary support leg 2 is in the state of supporting the main beam 1, that is, the third telescopic actuator 16 is extended, and the top of the third telescopic actuator 16 abuts against the main beam 1 to support the main beam 1.

[0141] S22, the bottom of the auxiliary leg body 15 abuts against the pier, and the auxiliary leg 2 is in the state of driving the main beam 1.

[0142] The drive device 5 is in the drive state, that is, the piston rod of the second telescopic drive 93 is extended, the bottom end of the first leg abuts against the aqueduct, the second rotary drive drives the steel wheel 92 to rotate, and the steel wheel 92 drives the main beam 1 to move forward two spans.

[0143] S23, the support leg 3 is in the state of supporting the main beam 1, that is, the first telescopic actuator 12 extends so that the bottom of the support leg 3 abuts against the top of the pier; the drive device 5 is in the state of support, that is, when the piston rod of the second telescopic actuator 93 extends, the bottom end of the first leg abuts against the aqueduct; the auxiliary leg 2 is in the state of walking along the bottom of the main beam 1, that is, the third telescopic actuator 16 shortens so that the bottom of the auxiliary leg body 15 moves away from the corresponding pier, the auxiliary leg 2 is suspended at the bottom of the main beam 1, the suspension device drives the auxiliary leg 2 to move forward along the main beam 1, and after stopping above the pier corresponding to the right end of the main beam 1, the auxiliary leg 2 is in the state of supporting the main beam 1 again.

[0144] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0145] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0146] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0147] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0148] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mobile trenching machine, characterized in that, include: A main beam with at least three spans (1); The outer formwork (7) is installed at the bottom of the main beam (1) for casting the aqueduct; the length of the outer formwork (7) along the length direction of the main beam (1) is at least two spans. The length of the main beam (1) is at least one span longer than the length of the outer formwork (7); Multiple support devices for supporting and driving the main beam (1) through the holes; After the casting is completed, the main beam (1) can be moved at least two spans through the support device; The support device includes multiple support legs (3) mounted on the main beam (1); The support leg (3) has two states: supporting the main beam (1) and hanging on the main beam (1); When the supporting leg (3) is in the state of supporting the main beam (1), the bottom of the supporting leg (3) abuts against the pier. The supporting leg includes a corbel and a column. The column is a conical column, a cylindrical column, a square pyramid or a cuboid. The support device also includes at least two drive devices (5); The drive device (5) includes a support state, a self-propelled state, and a drive state; When the driving device (5) is in a supported state, the bottom end of the driving device (5) abuts against the top end of the pier. When the drive device (5) is in the self-walking state, the drive device (5) can be suspended at the bottom of the main beam (1) and can move along the main beam (1); When the driving device (5) is in the driving state, the bottom of the driving device (5) can abut against the aqueduct and drive the main beam (1) through the hole; The support device also includes at least one auxiliary leg (2) that can be suspended from the bottom of the main beam (1); The auxiliary support leg (2) is installed at the front end of the main beam (1); The auxiliary support leg (2) has three states: supporting the main beam (1), walking along the bottom of the main beam (1), and driving the main beam (1); When the auxiliary leg (2) is in the state of supporting the main beam (1), the bottom end of the auxiliary leg (2) abuts against the pier. When the auxiliary leg (2) is in the state of driving the main beam (1), the bottom end of the auxiliary leg (2) abuts against the pier, the top end abuts against the main beam (1), and can drive the main beam (1) to move forward. The drive device (5) includes: a first leg capable of contacting or separating from the pier; A first sliding trolley (9) is installed on the top of the first support leg and is movable along the main beam (1); the first sliding trolley (9) includes a steel wheel (92) installed on the top of the first sliding trolley (9) and capable of driving the main beam (1) through a hole; The drive device (5) further includes a second telescopic driver (93) installed on the top of the first sliding trolley (9); the top of the second telescopic driver (93) can abut or separate from the bottom of the main beam (1); The drive device (5) includes a suspension device for suspending it at the bottom of the main beam (1); When the drive device (5) is in the support state and the drive state, the hanging device is separated from the main beam (1); When the drive device (5) is in a self-propelled state, the hanging device can drive the drive device (5) to slide along the main beam (1).

2. The mobile trenching machine as described in claim 1, characterized in that, The bottom of the support leg (3) is equipped with a first telescopic driver (12); The first telescopic actuator (12) is used to switch the support leg (3) between two states: supporting the main beam (1) and hanging on the main beam (1).

3. The mobile trenching machine as described in claim 1, characterized in that, The suspension device includes self-propelled wheels (91) capable of moving autonomously on the main beam (1); The self-propelled wheel (91) is connected to the first sliding trolley (9) via a walking bracket.

4. The mobile trenching machine as described in claim 3, characterized in that, The drive device (5) further includes a first rotary drive that drives the self-propelled wheel (91) to rotate; A second rotary drive that drives the steel wheel (92) to rotate.

5. The mobile trenching machine as described in any one of claims 1 to 4, characterized in that, The outer template (7) includes: Half-formwork (13) is respectively hinged to the front and rear sides of the main beam (1); Multiple fourth telescopic actuators (14) are hinged to the front and rear sides of the main beam (1); the telescopic ends of the fourth telescopic actuators (14) are hinged to the half template (13) located on the same side of the main beam (1); The fourth telescopic actuator (14) drives the half template (13) located on the same side of the main beam (1) to deflect, so that the half template (13) on the front and rear sides of the main beam (1) can be closed or separated.

6. The mobile trenching machine as described in claim 5, characterized in that, It also includes multiple operating platforms (8) to support operators; The multiple operating platforms (8) are respectively installed at the bottom of the half template (13).

7. The mobile trenching machine as described in any one of claims 1 to 4, characterized in that, It also includes multiple electric hoists (18) for lifting heavy objects; The plurality of electric hoists (18) are respectively installed on the front and rear sides of the main beam (1).

8. The mobile trenching machine as described in any one of claims 1 to 4, characterized in that, It also includes shelters (17) for blocking sunlight and rain; The canopy (17) is installed on the top of the main beam (1).

9. A method for constructing an aqueduct using a mobile trenching machine according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1. Pour concrete into the outer formwork (7) and cure it to form the aqueduct; S2, Demolding of the outer template (7), the support device can drive the main beam (1) to move forward at least two spans.

10. The aqueduct construction method as described in claim 9, characterized in that, Step S2 includes: S21, the supporting leg (3) is in the state of supporting the main beam (1), the at least two driving devices (5) are in the state of self-walking, the first leg moves forward by one span, and the first leg is placed above the pier. The auxiliary support leg (2) supports the main beam (1) in a certain state; S22, the bottom of the auxiliary leg (2) abuts against the pier, and the auxiliary leg (2) is in the state of driving the main beam (1); The bottom of the first leg abuts against the pier, the driving device (5) is in driving state, and the steel wheel (92) drives the main beam (1) to move forward by one span. S23. The supporting leg (3) is in the state of supporting the main beam (1), the driving device (5) is in the state of supporting, the auxiliary leg (2) is in the state of walking along the bottom of the main beam (1), and the auxiliary leg (2) walks forward along the main beam (1) for one span. S24. Repeat steps S21 and S22 at least once.

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