Construction method of a bridge erecting machine and single-arm bridge erecting machine

Abstract

The application relates to the technical field of bridge erection, in particular to a construction method of a bridge erecting machine and a single-arm bridge erecting machine. The construction method of the bridge erecting machine is as follows: when the construction line is a small curve section, the front supporting leg assembly and the middle supporting leg assembly are folded, the first horizontal moving mechanism is used to drive the front supporting leg assembly to move horizontally to the inside of the curve, the second horizontal moving mechanism is used to drive the middle supporting leg assembly to move horizontally to the outside of the curve, the first horizontal moving mechanism is used to drive the machine arm at the front supporting leg assembly to move horizontally to the inside of the curve when the front supporting leg assembly and the middle supporting leg assembly are supported, the second horizontal moving mechanism is used to drive the machine arm at the middle supporting leg assembly to move horizontally to the outside of the curve, and the centers of the two ends of the machine arm can be adjusted to coincide with the centers of the first bridge pier and the second bridge pier. Therefore, when the small curve girder erection is carried out, the bridge erecting machine does not need to be modified, the process of the bridge erecting machine passing through the small curve is simplified, the construction efficiency of the bridge erecting machine is improved, and the bridge erection time of the small curve section is reduced.

Description

Technical Field

[0001] This invention relates to the field of bridge erection technology, and more specifically, to a construction method for a bridge erection machine and a single-arm bridge erection machine. Background Technology

[0002] A bridge erecting machine is a device that places prefabricated bridge beams onto prefabricated bridge piers. It includes a boom, a front auxiliary outrigger assembly, a front outrigger assembly, a middle outrigger assembly, a rear outrigger assembly, a forward trolley, and a rear trolley. The boom moves forward via the front and middle outrigger assemblies until the front outrigger assembly can support the next pier and the middle outrigger assembly supports the bridge deck. The forward and rear trolleys then transport the bridge beams and connect both ends of the beams to the previous and next piers, respectively.

[0003] In existing technologies, when erecting bridges, bridge erecting machines only have a longitudinal distance between the upper and lower piers; that is, the front outrigger assembly, middle outrigger assembly, and boom only need to move longitudinally. However, in special working conditions, such as when erecting bridges on slightly curved sections, there are both longitudinal and lateral distances between the upper and lower piers. To erect the beams, it is necessary to drive the front outrigger assembly, middle outrigger assembly, and boom to move laterally, as well as to drive them longitudinally. Therefore, since existing bridge erecting machines generally only allow longitudinal movement, modifications are required to handle special working conditions. This modification process extends the bridge erection cycle and reduces construction efficiency. Summary of the Invention

[0004] The problem solved by this invention is how to use a bridge erecting machine to erect bridges on road sections with special working conditions and improve construction efficiency.

[0005] To address the aforementioned problems, this invention provides a construction method for a bridge erecting machine, applicable to a single-arm bridge erecting machine. The single-arm bridge erecting machine includes an arm, a front auxiliary outrigger assembly, a front outrigger assembly, a middle outrigger assembly, a rear outrigger assembly, a front traveling vehicle, a rear traveling vehicle, a first lateral movement mechanism, and a second lateral movement mechanism. The construction method includes a bridge erecting machine crossing a span step and a bridge erecting machine beam erection step, which are performed alternately. The bridge erecting machine crossing a span step includes, when the construction route is a slightly curved section, the bridge erecting machine uses a slightly curved span crossing method to complete the crossing. The slightly curved span crossing method includes:

[0006] When the bridge erecting machine finishes its beam erection step, it supports the front auxiliary support leg assembly, retracts the front support leg assembly, and uses the first lateral movement mechanism to drive the front support leg assembly to move a first lateral distance into the curve, and supports the front support leg assembly.

[0007] The front auxiliary outrigger assembly is retracted, and the front outrigger assembly, the middle outrigger assembly, and the arm are moved forward synchronously by a first longitudinal distance;

[0008] The second lateral movement mechanism is used to drive the arm at the middle outrigger assembly to move outward a second lateral distance from the curve, and to move the arm at the front outrigger assembly inward a third lateral distance from the curve.

[0009] Support the rear outrigger assembly, retract the middle outrigger assembly, and use the second lateral movement mechanism to drive the middle outrigger assembly to move out of the curve by a fourth lateral distance. Support the middle outrigger assembly, retract the rear outrigger assembly, and use the second lateral movement mechanism to drive the arm at the middle outrigger assembly to move out of the curve by the fourth lateral distance.

[0010] Support the rear outrigger assembly, retract the middle outrigger assembly and move the middle outrigger assembly forward by the third longitudinal distance, use the second lateral movement mechanism to drive the middle outrigger assembly to move outward of the curve by the fifth lateral distance, and support the middle outrigger assembly;

[0011] The rear outrigger assembly is retracted, and the arm at the middle outrigger assembly is driven to move outward a sixth lateral distance using the second lateral movement mechanism;

[0012] The front outrigger assembly, the middle outrigger assembly, and the boom are moved forward synchronously by a fourth longitudinal distance. When the front auxiliary outrigger assembly reaches the second pier, the front auxiliary outrigger assembly is supported on the second pier.

[0013] Support the rear outrigger assembly, retract the middle outrigger assembly and move the middle outrigger assembly forward by the fifth longitudinal distance, and support the middle outrigger assembly;

[0014] Retract the front outrigger assembly, move the front outrigger assembly forward by the sixth longitudinal distance, support the front outrigger assembly, retract the front auxiliary outrigger assembly, and move the front traveling vehicle and the rear traveling vehicle to the rear of the middle outrigger assembly to complete the passage through the hole.

[0015] The technical effects of this invention are as follows: During the bridge erection machine's passage through the span, the boom moves forward a first longitudinal distance and a fourth longitudinal distance, which moves the front auxiliary support leg assembly to the second pier, facilitating its support to the second pier. The middle support leg assembly moves forward a third longitudinal distance and a fifth longitudinal distance, which moves it to the first pier, facilitating its support to the first pier. The front support leg assembly moves forward a sixth longitudinal distance, which moves it to the second pier, facilitating its support to the second pier. Simultaneously, when retracting the front and middle support leg assemblies, a first lateral movement mechanism drives the front support leg assembly to move a first lateral distance inward along the curve, and a second lateral movement mechanism drives the middle support leg assembly to move a fifth lateral distance outward along the curve, so that the front support leg assembly supports the second pier and the middle support leg assembly supports the first pier. When supporting the front and middle outrigger assemblies, the first lateral movement mechanism drives the boom at the front outrigger assembly to move a third lateral distance inwards along the curve. The second lateral movement mechanism drives the boom at the middle outrigger assembly to move a second, fourth, and sixth lateral distance outwards along the curve. By using the first and second lateral movement mechanisms to drive the boom through multiple lateral movements, the angle of the boom can be adjusted more precisely, allowing the boom's extension direction to coincide with the line connecting the first and second piers. The traveling vehicles can then move along the boom to the corresponding locations on the first and second piers, facilitating beam erection. Therefore, when erecting beams on small curves, the first and second lateral movement mechanisms can be used directly to drive the boom and adjust its extension direction without requiring modifications to the bridge erecting machine. This simplifies the process of crossing small curves, improves the construction efficiency of the bridge erecting machine, and reduces the time required for bridge erection on small curve sections. In addition, the front outrigger assembly drives the boom to move laterally out of the curve, while the middle outrigger assembly drives the boom to move laterally in the curve. Compared to using only the front or middle outrigger assembly to drive the boom for lateral movement, the overall lateral movement of the boom is smaller, which can prevent interference between the boom and the beam.

[0016] Optionally, the small curve through-hole method further includes: after the front support leg assembly moves forward by the sixth longitudinal distance, rotating the front support leg assembly to be parallel to the second pier.

[0017] Optionally, the small curve through-hole method further includes: when the middle support leg assembly is retracted and moved forward by a fifth longitudinal distance, the second lateral mechanism is used to drive the middle support leg assembly to move towards the centerline of the first pier by a seventh lateral distance, thereby supporting the middle support leg assembly.

[0018] Optionally, the bridge erecting machine crossing the span step further includes, when the construction route is a steep slope section, the bridge erecting machine adopts a steep slope crossing method for crossing the span, the steep slope crossing method including:

[0019] When the bridge erection machine finishes its beam erection step, release the locating pins between the front outrigger assembly, the middle outrigger assembly, and the boom.

[0020] The front outrigger assembly and the middle outrigger assembly simultaneously drive the boom forward a first longitudinal distance, and the forward trolley and the rear trolley synchronously move to a position a second longitudinal distance from the tail of the boom;

[0021] The rear outrigger assembly is supported, the middle outrigger assembly is retracted and moved forward by a third longitudinal distance, and the middle outrigger assembly is supported;

[0022] The rear outrigger assembly is retracted, and the front outrigger assembly and the middle outrigger assembly simultaneously drive the boom to move forward a fourth longitudinal distance. When the front auxiliary outrigger assembly moves to the second pier, it supports the front auxiliary outrigger assembly on the second pier.

[0023] The rear outrigger assembly is supported, the middle outrigger assembly is retracted, and the middle outrigger assembly is driven to move forward a fifth longitudinal distance, supporting the middle outrigger assembly;

[0024] The front outrigger assembly is retracted, and after the front outrigger assembly is moved forward six longitudinal distances to the second pier, it is supported on the second pier. The front auxiliary outrigger assembly is retracted, and both the forward and rear trolleys are moved to the rear of the middle outrigger assembly to prepare for beam erection. The span crossing is completed.

[0025] Optionally, the bridge erecting machine crossing the span step further includes, when the steep section is downhill, the steep slope crossing method further includes:

[0026] Before releasing the locating pins between the front outrigger assembly, the middle outrigger assembly, and the boom, the front auxiliary outrigger assembly, the front outrigger assembly, the middle outrigger assembly, and the rear outrigger assembly are simultaneously lowered to a first height.

[0027] Optionally, the bridge erecting machine's beam erection step includes, when the construction route is a slightly curved section, the bridge erecting machine uses a slightly curved beam erection method to erect the beam segments, the slightly curved beam erection method including:

[0028] The bridge erecting machine prepares to erect the bridge beam; the beam transport vehicle transports the beam segment to its designated position; the second lateral movement mechanism drives the boom at the middle support leg assembly to move laterally outward a distance of eight, and the forward trolley lifts the front end of the beam segment; the forward trolley and the rear trolley advance synchronously a distance of seven longitudinal; the first lateral movement mechanism drives the boom at the front support leg assembly to move laterally outward a distance of one, and the second lateral movement mechanism drives the boom at the middle support leg assembly to move laterally inward a distance of nine; the rear support leg assembly flips vertically, supports the rear support leg assembly, and the rear trolley lifts the rear end of the beam segment; after the forward trolley and the rear trolley lift the beam into position, the two ends of the beam segment are respectively placed on the first pier and the second pier.

[0029] Optionally, the bridge erecting machine's beam erection step further includes rotating the middle support leg assembly by a first angle when the bridge erecting machine passes through the tunnel, and rotating the middle support leg assembly back by a first angle after the middle support leg assembly passes through the tunnel.

[0030] The present invention also provides a single-arm bridge erecting machine, applied to the construction method of the bridge erecting machine as described above, comprising a boom, a front auxiliary outrigger assembly, a front outrigger assembly, a middle outrigger assembly, a rear outrigger assembly, a front traveling carriage, a rear traveling carriage, a first lateral movement mechanism, and a second lateral movement mechanism. The front auxiliary outrigger assembly and the rear outrigger assembly are respectively fixedly connected to the front and rear ends of the boom. The front outrigger assembly, the middle outrigger assembly, the front traveling carriage, and the rear traveling carriage are all slidably connected to the boom. The first lateral movement mechanism is disposed on the front outrigger assembly, and the second lateral movement mechanism is disposed on the middle outrigger assembly.

[0031] Optionally, the front auxiliary outrigger assembly, the front outrigger assembly, the middle outrigger assembly, and the rear outrigger assembly each include a guide sleeve and a guide post. The guide sleeve and the guide post are both arranged along the height direction of the boom. The guide sleeve is used to connect with the boom, and the guide post is slidably connected to the guide sleeve.

[0032] Optionally, the front auxiliary outrigger assembly, the front outrigger assembly, the middle outrigger assembly, and the rear outrigger assembly each include a plurality of guide sleeves and a plurality of guide posts, and the plurality of guide sleeves and the plurality of guide posts are alternately connected. Attached Figure Description

[0033] Figure 1 This is a top view of step one of the small curved vias in an embodiment of the present invention;

[0034] Figure 2 This is a top view of step two of the small curved via in an embodiment of the present invention;

[0035] Figure 3 This is a top view of step three of the small curved via in an embodiment of the present invention;

[0036] Figure 4 This is a top view of step four of the small curved via in an embodiment of the present invention;

[0037] Figure 5 This is a top view of step five of the small curved via embodiment of the present invention;

[0038] Figure 6 This is a top view of step six of the small curved via embodiment of the present invention;

[0039] Figure 7 This is a top view of step seven of the small curved via embodiment of the present invention;

[0040] Figure 8 This is a top view of step eight of the small curved via embodiment of the present invention;

[0041] Figure 9 This is a top view of step nine of the small curved via embodiment of the present invention;

[0042] Figure 10 This is a side view of step one of the steep uphill passage through the hole in an embodiment of the present invention;

[0043] Figure 11 This is a side view of step two of the steep uphill passage through the hole in this embodiment of the invention;

[0044] Figure 12 This is a side view of step three of the steep uphill passage through the hole in this embodiment of the invention;

[0045] Figure 13 This is a side view of step four of the steep uphill passage through the hole in this embodiment of the invention;

[0046] Figure 14 This is a side view of step five of the steep uphill passage through the hole in this embodiment of the invention;

[0047] Figure 15 This is a side view of step six of the steep uphill passage through the hole in this embodiment of the invention;

[0048] Figure 16 This is a side view of step one of the steep downhill passage through the hole in an embodiment of the present invention;

[0049] Figure 17 This is a side view of step two of the steep downhill passage through the hole in an embodiment of the present invention;

[0050] Figure 18 This is a side view of step three of the steep downhill passage through the hole in this embodiment of the invention;

[0051] Figure 19 This is a side view of step four of the steep downhill passage through the hole in this embodiment of the invention;

[0052] Figure 20 This is a side view of step five of the steep downhill passage through the hole in this embodiment of the invention;

[0053] Figure 21 This is a side view of step six of the steep downhill passage through the hole in this embodiment of the invention;

[0054] Figure 22 This is a side view of step one of the small curved beam erection process in an embodiment of the present invention;

[0055] Figure 23 This is a top view of step one of the small curved beam erection in an embodiment of the present invention;

[0056] Figure 24 This is a side view of step two of the small curved beam erection in an embodiment of the present invention;

[0057] Figure 25 This is a top view of step two of the small curved beam erection in an embodiment of the present invention;

[0058] Figure 26 This is a side view of step three of the small curved beam erection in an embodiment of the present invention;

[0059] Figure 27 This is a top view of step three of the small curved beam erection in an embodiment of the present invention;

[0060] Figure 28 This is a side view of step four of the small curved beam erection in an embodiment of the present invention;

[0061] Figure 29 This is a top view of step four of the small curved beam erection in an embodiment of the present invention;

[0062] Figure 30 This is a side view of step five of the small curved beam erection process in an embodiment of the present invention;

[0063] Figure 31 This is a top view of step five of the small curved beam erection in an embodiment of the present invention;

[0064] Figure 32 This is a side view of step six of the small curved beam erection process in an embodiment of the present invention;

[0065] Figure 33 This is a top view of step six of the small curved beam erection in an embodiment of the present invention.

[0066] Explanation of reference numerals in the attached figures:

[0067] 1. Boom; 20. Front auxiliary outrigger assembly; 21. Front outrigger assembly; 22. Middle outrigger assembly; 23. Rear outrigger assembly; 31. Front traveling vehicle; 32. Rear traveling vehicle; 4. Bridge beam; 51. First pier; 52. Second pier. Detailed Implementation

[0068] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0069] It should be noted that in the XYZ coordinate system provided in this article, the positive direction of the X-axis represents the front, the negative direction of the X-axis represents the back, the positive direction of the Y-axis represents the left, the negative direction of the Y-axis represents the right, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0070] like Figure 1-9 As shown, this embodiment of the invention provides a construction method for a bridge erecting machine, applied to a single-arm bridge erecting machine. The single-arm bridge erecting machine includes an arm 1, a front auxiliary outrigger assembly 20, a front outrigger assembly 21, a middle outrigger assembly 22, a rear outrigger assembly 23, a front traveling trolley 31, a rear traveling trolley 32, a first lateral movement mechanism, and a second lateral movement mechanism. The construction method includes a bridge erecting machine crossing a span step and a bridge erecting machine beam erection step, which are performed alternately. The bridge erecting machine crossing a span step includes, when the construction line is a small curve section, the bridge erecting machine uses a small curve crossing method to complete the crossing. The small curve crossing method includes:

[0071] Step 1: When the bridge erecting machine finishes the beam erection step, the front auxiliary support leg assembly 20 is retracted and the front support leg assembly 21 is moved laterally into the curve by the first lateral movement mechanism.

[0072] Step 2: Retract the front auxiliary outrigger assembly 20, and use the front outrigger assembly 21 and the middle outrigger assembly 22 to simultaneously drive the boom 1 and move it forward by a first longitudinal distance, moving the forward trolley 31 and the rear trolley 32 to the tail of the boom 1. The distance between the forward trolley 31 and the rear trolley 32 is relatively small, and the rear trolley 32 is moved to a position at a second longitudinal distance from the tail of the boom 1.

[0073] Step 3: Use the second lateral movement mechanism to drive the arm 1 at the middle outrigger assembly 22 to move outward a second lateral distance from the curve, and use the first lateral movement mechanism to drive the arm 1 at the front outrigger assembly 21 to move inward a third lateral distance from the curve.

[0074] Step 4: Support the rear outrigger assembly 23, retract the middle outrigger assembly 22, and use the second lateral movement mechanism to drive the middle outrigger assembly 22 to move out of the curve by a fourth lateral distance. Support the middle outrigger assembly 22, retract the rear outrigger assembly 23, and use the second lateral movement mechanism to drive the arm 1 at the middle outrigger assembly 22 to move out of the curve by a fourth lateral distance.

[0075] Step 5: Support the rear outrigger assembly 23, retract the middle outrigger assembly 22 and move it forward by the third longitudinal distance, use the second lateral movement mechanism to drive the middle outrigger assembly 22 to move outward of the curve by the fifth lateral distance, and support the middle outrigger assembly 22.

[0076] Step 6: Retract the rear outrigger assembly 23 and use the second lateral movement mechanism to drive the arm 1 at the middle outrigger assembly 22 to move outward of the curve by a sixth lateral distance;

[0077] Step 7: The front outrigger assembly 21 and the middle outrigger assembly 22 drive the boom 1 forward by the fourth longitudinal distance until the front auxiliary outrigger assembly 20 reaches the second pier 52, and support the front auxiliary outrigger assembly 20 on the second pier 52.

[0078] Step 8: Support the rear support leg assembly 23, retract the middle support leg assembly 22 and move it forward by the fifth longitudinal distance, support the middle support leg assembly 22;

[0079] Step 9: Retract the front outrigger assembly 21. The front outrigger assembly 21 moves forward by the sixth longitudinal distance. Retract the front outrigger assembly 21. Connect the positioning pins of the front outrigger assembly 21, the middle outrigger assembly 22 and the boom 1. Retract the front auxiliary outrigger assembly 20.

[0080] In this embodiment, exemplarily, the lateral direction is the width direction of the boom 1, i.e., the Y-axis direction, and the longitudinal direction is the length direction of the boom 1, i.e., the X-axis direction. A first drive mechanism is provided on the front outrigger assembly 21, which drives the front outrigger assembly 21 and the boom 1 longitudinally. A second drive mechanism is provided on the middle outrigger assembly 22, which drives the middle outrigger assembly 22 and the boom 1 laterally. After the beam is erected, the front auxiliary outrigger assembly 20 is supported, the front outrigger assembly 21 is retracted, and the column of the front outrigger assembly 21 is moved 250mm inward along the curve. The front auxiliary outrigger assembly 20 is retracted, and the front outrigger assembly 21 and the middle outrigger assembly 22 simultaneously drive the boom 1 forward by 20m, causing the forward trolley 31 and the rear trolley 32 to synchronously retreat to the tail of the boom 1. The rear trolley 32 is approximately 4 meters from the tail of the boom. m; the arm 1 at the middle outrigger assembly 22 moves 300mm outward from the curve, and the arm 1 at the front outrigger assembly 21 moves 500mm inward from the curve; the rear outrigger assembly 23, after retracting the middle outrigger assembly 22, moves the middle outrigger assembly 22 outward 400mm; the middle outrigger assembly 22, after retracting the rear outrigger assembly 23, moves the arm 1 of the middle outrigger assembly 22 outward 400mm; the rear outrigger assembly 23, after retracting the middle outrigger assembly 22 and moving forward 19m, moves the column of the middle outrigger assembly 22 outward 300mm; the middle outrigger assembly 22; after retracting the rear outrigger assembly 23, the middle outrigger assembly 22 drives the arm 1 to move laterally outward 443mm; the driven arm 1 moves forward 20.7m, and the front auxiliary outrigger assembly 20 stops moving after reaching the front axle platform; the front auxiliary outrigger assembly 20; the rear outrigger assembly 23, after retracting the middle outrigger assembly 22... The outrigger assembly 22 moves forward 21.7m to support the middle outrigger assembly 22; the front outrigger assembly 21 is retracted and returned to the center position; the front outrigger assembly 21 moves forward 40.7m to support the front outrigger assembly 21; the positioning pins between the front outrigger assembly 21, the middle outrigger assembly 22 and the boom 1 are inserted; the front auxiliary outrigger assembly 20 is retracted; the forward trolley 31 and the rear trolley 32 move to the rear of the middle outrigger assembly 22 to prepare for beam erection; the span is completed.

[0081] In summary, during the bridge erecting machine's passage through the span, the boom 1 moves forward by the first longitudinal distance and the fourth longitudinal distance, which can move the front auxiliary outrigger assembly 20 to the second pier 52, facilitating the support of the front auxiliary outrigger assembly 20 to the second pier 52. The middle outrigger assembly 22 moves forward by the third longitudinal distance and the fifth longitudinal distance, which can move the middle outrigger assembly 22 to the first pier 51, facilitating the support of the middle outrigger assembly 22 to the first pier 51. The front outrigger assembly 21 moves forward by the sixth longitudinal distance, which can move the front outrigger assembly 21 to the second pier 52, facilitating the support of the front outrigger assembly 21 to the second pier. At the same time, when the front outrigger assembly 21 and the middle outrigger assembly 22 are retracted, the first lateral movement mechanism drives the front outrigger assembly 21 to move a first lateral distance inward into the curve, and the second lateral movement mechanism drives the middle outrigger assembly 22 to move a fifth lateral distance outward from the curve, so that the front outrigger assembly 21 can be supported by the second pier 52 and the middle outrigger assembly 22 can be supported by the first pier 51. When supporting the front outrigger assembly 21 and the middle outrigger assembly 22, the first lateral movement mechanism drives the boom 1 at the front outrigger assembly 21 to move inward a third lateral distance within the curve, and the second lateral movement mechanism drives the boom 1 at the middle outrigger assembly 22 to move outward a second lateral distance, a fourth lateral distance, and a sixth lateral distance. By using the first and second lateral movement mechanisms to drive the boom 1 to make multiple lateral movements, the angle of the boom 1 can be adjusted more precisely, so that the extension direction of the boom 1 can be adjusted to coincide with the line connecting the first pier 51 and the second pier 52. The front traveling vehicle 31 and the rear traveling vehicle 32 can move along the boom 1 to the corresponding positions of the first pier 51 and the second pier 52, thereby facilitating the beam erection by the front traveling vehicle 31 and the rear traveling vehicle 32. Therefore, when erecting bridges on small curves, the first and second lateral movement mechanisms can be used directly to drive the boom 1 to adjust its extension direction, eliminating the need to modify the bridge erecting machine. This simplifies the process of the bridge erecting machine traversing small curves, improves its construction efficiency, and reduces the time required for bridge erection on small curve sections. Furthermore, the alternating lateral movement of the boom 1 driven by the front outrigger assembly 21 (moving it outwards from the curve) and the lateral movement of the boom 1 driven by the middle outrigger assembly 22 (moving it inwards from the curve) results in a smaller overall lateral movement of the boom 1 compared to using only either the front outrigger assembly 21 or the middle outrigger assembly 22. This helps prevent interference between the boom 1 and the bridge beam 4.

[0082] Optionally, the small curve through-hole method also includes: after the front outrigger assembly 21 moves forward by a sixth longitudinal distance, rotating the front outrigger assembly 21 to be parallel to the second pier 52.

[0083] In this embodiment, exemplarily, after the second lateral movement mechanism drives the boom 1 at the middle support leg assembly 22 to move laterally, it will cause the front support leg assembly 21 to deviate angularly from the second pier 52. By rotating the front support leg assembly 21 until it is parallel to the second pier 52, and moving the front support leg assembly 21 to the second pier 52, the front support leg assembly 21 can accurately support the second pier 52, ensuring the stability of the bridge erecting machine during the small curve crossing process.

[0084] Optionally, the small curve through-hole method further includes: when the middle support leg assembly 22 is retracted and moved forward by a fifth longitudinal distance, the second lateral mechanism is used to drive the middle support leg assembly 22 to move a seventh lateral distance toward the centerline of the first pier 51, thereby supporting the middle support leg assembly 22.

[0085] In this embodiment, for example, the seventh lateral distance is 250mm, that is, the middle support leg assembly 22 is moved 250mm closer to the centerline of the first pier 51 by using the second lateral mechanism. This facilitates moving the center of the middle support leg assembly 22 to coincide with the center of the first pier 51, making it easier to use the middle support leg assembly 22 to support the first pier 51, and ensuring the stability of the bridge erecting machine during the small curve crossing process.

[0086] Optionally, such as Figure 10-21 As shown, the bridge erecting machine's crossing procedure also includes, when the construction route is a steep slope section, the bridge erecting machine uses a steep slope crossing method to cross the span. The steep slope crossing method includes:

[0087] Step 1: When the bridge erecting machine is installed in place or the bridge erecting machine finishes its beam erection step, release the positioning pins between the front outrigger assembly 21, the middle outrigger assembly 22 and the boom 1.

[0088] Step 2: The front outrigger assembly 21 and the middle outrigger assembly 22 simultaneously drive the boom 1 forward a first longitudinal distance, and the forward trolley 31 and the rear trolley 32 synchronously move to a position a second longitudinal distance from the tail of the boom 1.

[0089] Step 3: Rear support leg assembly 23, retract middle support leg assembly 22 and move forward by the third longitudinal distance, middle support leg assembly 22;

[0090] Step 4: Retract the rear outrigger assembly 23, the front outrigger assembly 21 and the middle outrigger assembly 22 simultaneously drive the boom 1 forward by the fourth longitudinal distance. After the front auxiliary outrigger assembly 20 moves to the second pier 52, support the front auxiliary outrigger assembly 20 on the second pier 52.

[0091] Step 5: Support the rear outrigger assembly 23, retract the middle outrigger assembly 22 and drive the middle outrigger assembly 22 forward by the fifth longitudinal distance, supporting the middle outrigger assembly 22;

[0092] Step 6: Retract the front outrigger assembly 21. Move the front outrigger assembly 21 forward by the sixth longitudinal distance to the second pier 52 and support the front outrigger assembly 21 on the second pier 52. Retract the front auxiliary outrigger assembly 20. Move both the front traveling trolley 31 and the rear traveling trolley 32 to the rear of the middle outrigger assembly 22 to prepare for beam erection. The span crossing is completed.

[0093] In this embodiment, exemplarily, the construction route is an uphill section with a pier span of 40m or less and an uphill angle of 30‰. Specifically, when the bridge erecting machine is installed in place or the beam erection step is completed, the positioning pins between the front outrigger assembly 21, the middle outrigger assembly 22 and the boom 1 are released; after the bridge erecting machine completes the beam erection, the positioning pins between the front outrigger assembly 21, the middle outrigger assembly 22 and the boom 1 are released respectively to prepare for passing through the hole. The front outrigger assembly 21 and the middle outrigger assembly 22 simultaneously drive the boom 1 forward by 20m, and the front and rear trolleys 32 simultaneously retreat to a position 4m from the tail; the rear outrigger assembly 23 is supported, the middle outrigger assembly 22 is retracted and moved forward by 19m, and the middle outrigger assembly 22 is supported; the rear outrigger assembly 23 is retracted, the boom 1 is driven forward by 20.7m, the current auxiliary outrigger assembly 20 stops moving after reaching the front bridge abutment, supporting the front auxiliary outrigger assembly 20; the rear outrigger is supported. Assembly 23 retracts the middle outrigger assembly 22 and moves it forward 21.7m to support the middle outrigger assembly 22; retracts the front outrigger assembly 21, which moves forward 40.7m on its own and supports the front outrigger assembly 21 after reaching its position; inserts the positioning pins of the boom 1 of the front outrigger assembly 21 and the middle outrigger assembly 22, retracts the front auxiliary outrigger assembly 20, and moves both the forward trolley 31 and the rear trolley 32 to the rear of the middle outrigger assembly 22 to prepare for beam erection and complete the crossing of the span.

[0094] In summary, the front auxiliary outrigger assembly 20, front outrigger assembly 21, middle outrigger assembly 22, and rear outrigger assembly 23 all adopt a structure composed of guide columns, guide sleeves, and lifting cylinders. When crossing the bridge on a steep slope, the front auxiliary outrigger assembly 20, front outrigger assembly 21, middle outrigger assembly 22, and rear outrigger assembly 23 can automatically adjust their height and pier support without needing to disassemble and install adjustment sections on these assemblies during the crossing process, thus simplifying the process. Simultaneously, by first moving the boom 1 forward a first longitudinal distance and moving the forward trolley 31 and rear trolley 32 to the rear end of the boom 1, the center of gravity of the bridge erecting machine is shifted to the rear end of the boom 1 to maintain the stability of the bridge erecting machine, which is beneficial for crossing the bridge on a steep slope. In addition, depending on the actual situation, such as the horizontal distance between the first pier 51 and the second pier 52, a first longitudinal distance, a second longitudinal distance, a third longitudinal distance, a fourth longitudinal distance, a fifth longitudinal distance, and a sixth longitudinal distance can be set respectively.

[0095] Optionally, such as Figure 16-21 As shown, the bridge erecting machine's crossing process also includes, when the steep slope is downhill, the steep slope crossing method further includes:

[0096] Before releasing the locating pins between the front outrigger assembly 21, the middle outrigger assembly 22 and the boom 1, lower the front auxiliary outrigger assembly 20, the front outrigger assembly 21, the middle outrigger assembly 22 and the rear outrigger assembly 23 to the first height simultaneously.

[0097] In this embodiment, for example, the front outrigger assembly 21 is supported on the second pier 52, and the middle outrigger assembly 22 is supported on the bridge deck. When the steep slope is downhill and the gradient is large, there is a significant height difference between the front outrigger assembly 21 and the middle outrigger assembly 22, making it difficult for the front outrigger assembly 21 to be supported on the second pier 52. Lowering the front auxiliary outrigger assembly 20, front outrigger assembly 21, middle outrigger assembly 22, and rear outrigger assembly 23 simultaneously by 0.9m can reduce the height difference between the front outrigger assembly 21 and the middle outrigger assembly 22, which is beneficial for the implementation of the through-hole method on steep slopes. Simultaneously, when the steep slope is uphill and the gradient is large, raising the front auxiliary outrigger assembly 20, front outrigger assembly 21, middle outrigger assembly 22, and rear outrigger assembly 23 simultaneously by 0.9m.

[0098] Optionally, such as Figure 22-33 As shown, the bridge erection machine's beam erection steps include, when the construction route is a slightly curved section, the bridge erection machine uses the slightly curved beam erection method to erect beam 4. The slightly curved beam erection method includes:

[0099] Step 1: The bridge erecting machine prepares to erect the bridge beams;

[0100] Step 2: The beam transport vehicle delivers beam segment 4 to its designated location;

[0101] Step 3: The second lateral movement mechanism drives the boom 1 at the middle outrigger assembly 22 to move laterally outwards by eight lateral distances, and uses the forward trolley 31 to lift the front end of the beam 4;

[0102] Step 4: The forward vehicle 31 and the rear vehicle 32 advance synchronously for the seventh longitudinal distance;

[0103] Step 5: The first lateral movement mechanism drives the boom 1 at the front outrigger assembly 21 to move outward a first lateral distance from the curve, and the second lateral movement mechanism drives the boom 1 at the middle outrigger assembly 22 to move inward a ninth lateral distance from the curve. The rear outrigger assembly 23 flips vertically, supports the rear outrigger assembly 23, and the rear trolley 32 lifts the rear end of the beam 4.

[0104] Step Six: After the front trolley 31 and the rear trolley 32 have lifted the beam into place, place both ends of the beam 4 onto the first pier 51 and the second pier 52 respectively.

[0105] In this embodiment, exemplarily, the bridge erecting machine prepares to erect the beam; the beam transport vehicle transports the beam to its designated position; the boom 1 of the middle support leg assembly 22 moves 73mm laterally outward from the curve, and the forward trolley 31 lifts the beam; the forward trolley 31 and the rear trolley 32 advance synchronously for 15.8m; the boom 1 of the front support leg assembly 21 moves 250mm outward from the curve, the boom 1 of the middle support leg assembly 22 moves 373mm inward from the curve, the rear support leg assembly 23 flips vertically, supports the rear support leg assembly 23, and the rear trolley 32 lifts the rear end of the beam segment 4; after the forward trolley 31 and the rear trolley 32 lift the beam to its designated position, the boom 1 moves laterally to its designated position, and the beam is lowered. Thus, during the movement of the forward trolley 31 and the rear trolley 32, the boom 1 is rotated, which can move the forward trolley 31 to the first pier 51 and the rear trolley 32 to the second pier 52, which is beneficial for erecting beams on small curved sections.

[0106] Optionally, the bridge erecting machine's beam erection step also includes rotating the middle support leg assembly 22 by a first angle when the bridge erecting machine passes through the tunnel, and rotating the middle support leg assembly 22 back by a first angle after the middle support leg assembly 22 has passed through the tunnel.

[0107] In this embodiment, the first angle is exemplarily set to 57 degrees. The tunnel width is limited, making it difficult for the middle support leg assembly 22 to pass through. By rotating the middle support leg assembly 22 by the first angle, the width of the bridge erecting machine relative to the tunnel can be reduced, facilitating its passage. Simultaneously, the tunnel height is also limited; the front auxiliary support leg assembly 20, front support leg assembly 21, middle support leg assembly 22, and rear support leg assembly 23 can be simultaneously lowered to their lowest positions to reduce the height of the bridge erecting machine relative to the tunnel, making it more advantageous for the machine to pass through. Compared to the prior art, where the middle support leg assembly 22 needs to be removed when the bridge erecting machine passes through the tunnel, in this embodiment, the middle support leg assembly 22 is rotated 57 degrees before entering the tunnel, until it can enter the tunnel synchronously with the boom 1. After passing through the tunnel, since a beam needs to be erected 2.5m from the tunnel exit, the middle support leg assembly 22 can be rotated back 57 degrees. Therefore, when the bridge erecting machine passes through the tunnel, it is not necessary to remove the middle support leg assembly 22, which simplifies the bridge erecting process.

[0108] Another embodiment of the present invention provides a single-arm bridge erecting machine, applied to the construction method of the bridge erecting machine as described above, comprising a boom 1, a front auxiliary leg assembly 20, a front leg assembly 21, a middle leg assembly 22, a rear leg assembly 23, a front traveling carriage 31, a rear traveling carriage 32, a first lateral movement mechanism, and a second lateral movement mechanism. The front auxiliary leg assembly 20 and the rear leg assembly 23 are respectively fixedly connected to the front and rear ends of the boom 1. The front leg assembly 21, the middle leg assembly 22, the front traveling carriage 31, and the rear traveling carriage 32 are all slidably connected to the boom 1. The first lateral movement mechanism is disposed on the front leg assembly 21, and the second lateral movement mechanism is disposed on the middle leg assembly 22.

[0109] In this embodiment, the first lateral movement mechanism is disposed between the front outrigger assembly 21 and the boom 1. Therefore, when the lower end of the front outrigger assembly 21 is connected to the bridge deck or pier, the front outrigger assembly 21 is fixed, and the boom 1 can be driven to move laterally using the first lateral movement mechanism. When the lower end of the front outrigger assembly 21 is separated from the bridge deck or pier, the first lateral movement mechanism can be driven to move laterally. Similarly, the second lateral movement mechanism is disposed between the middle outrigger assembly 22 and the boom 1. Therefore, when the lower end of the middle outrigger assembly 22 is connected to the bridge deck or pier, the middle outrigger assembly 22 is fixed, and the boom 1 can be driven to move laterally using the second lateral movement mechanism. Thus, disposing of the first lateral movement mechanism on the front outrigger assembly 21 and the second lateral movement mechanism on the middle outrigger assembly 22 facilitates the lateral movement of the boom 1, the front outrigger assembly 21, and the middle outrigger assembly 22, simplifying the process of navigating through narrow curves.

[0110] Optionally, the front auxiliary outrigger assembly 20, the front outrigger assembly 21, the middle outrigger assembly 22, and the rear outrigger assembly 23 all include guide sleeves and guide posts. The guide sleeves and guide posts are both arranged along the height direction of the boom 1. The guide sleeves are used to connect with the boom 1, and the guide posts are slidably connected to the guide sleeves.

[0111] In this embodiment, exemplarily speaking, when the bridge erecting machine is erecting the first span, due to the significant height difference between the abutment and the pier pad, the conventional bridge erecting support legs have very small adjustment heights. Therefore, when erecting the first and last spans, the adjusting section of the front support leg assembly 21 needs to be frequently removed, which is cumbersome and time-consuming. By configuring the front auxiliary support leg assembly 20, front support leg assembly 21, middle support leg assembly 22, and rear support leg assembly 23 as guide sleeves and guide columns, it is easier to lift the front auxiliary support leg assembly 20, front support leg assembly 21, middle support leg assembly 22, and rear support leg assembly 23 from the pier pad to the bridge abutment in one go, without dismantling any structures. This shortens the workflow, saves manpower and resources, and improves work efficiency. Simultaneously, a hydraulic cylinder can be used to drive the guide column relative to the guide sleeve.

[0112] Optionally, the front auxiliary outrigger assembly 20, the front outrigger assembly 21, the middle outrigger assembly 22, and the rear outrigger assembly 23 each include multiple guide sleeves and multiple guide posts, and the multiple guide sleeves and multiple guide posts are alternately connected.

[0113] In this embodiment, exemplarily, the front auxiliary outrigger assembly 20, the front outrigger assembly 21, the middle outrigger assembly 22, and the rear outrigger assembly 23 are each provided with multiple guide sleeves and guide posts. For example, two guide sleeves and guide posts can be provided, namely a first guide sleeve, a second guide sleeve, a first guide post, and a second guide post. The first guide sleeve and the first guide post are connected, and the first guide sleeve is connected to the boom 1; the second guide sleeve and the second guide post are connected, and the second guide sleeve is connected to the first guide post. Thus, by increasing the number of guide sleeves and guide posts, the stroke of the front auxiliary outrigger assembly 20, the front outrigger assembly 21, the middle outrigger assembly 22, and the rear outrigger assembly 23 can be increased, which helps to ensure that the front auxiliary outrigger assembly 20, the front outrigger assembly 21, the middle outrigger assembly 22, and the rear outrigger assembly 23 are lifted from the pier pad stone to the bridge abutment in one go, further shortening the workflow and improving work efficiency. At the same time, each guide post can be driven by a hydraulic cylinder.

[0114] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A construction method for a bridge erecting machine, applied to a single-arm bridge erecting machine, the single-arm bridge erecting machine comprising a boom (1), a front auxiliary outrigger assembly (20), a front outrigger assembly (21), a middle outrigger assembly (22), a rear outrigger assembly (23), a front traveling carriage (31), a rear traveling carriage (32), a first lateral movement mechanism, and a second lateral movement mechanism, characterized in that, The construction method of the bridge erecting machine includes a bridge erecting machine crossing a slab and a bridge erecting machine beam erection step, which are performed alternately. The bridge erecting machine crossing a slab step includes, when the construction route is a slightly curved section, the bridge erecting machine uses a slightly curved slab crossing method to complete the crossing. The slightly curved slab crossing method includes: When the bridge erecting machine finishes the beam erection step, it supports the front auxiliary support leg assembly (20), retracts the front support leg assembly (21), and uses the first lateral movement mechanism to drive the front support leg assembly (21) to move a first lateral distance into the curve, and supports the front support leg assembly (21). The front auxiliary outrigger assembly (20) is retracted from the first pier (51), and the boom (1) is driven forward by the front outrigger assembly (21) and the middle outrigger assembly (22) simultaneously to move forward a first longitudinal distance; The second lateral movement mechanism is used to drive the arm (1) at the middle outrigger assembly (22) to move outward a second lateral distance, and the first lateral movement mechanism is used to drive the arm (1) at the front outrigger assembly (21) to move inward a third lateral distance. Support the rear outrigger assembly (23), retract the middle outrigger assembly (22), and use the second lateral movement mechanism to drive the middle outrigger assembly (22) to move out of the curve by a fourth lateral distance. Support the middle outrigger assembly (22), retract the rear outrigger assembly (23), and use the second lateral movement mechanism to drive the arm (1) at the middle outrigger assembly (22) to move out of the curve by the fourth lateral distance. Support the rear support leg assembly (23), retract the middle support leg assembly (22) and move the middle support leg assembly (22) forward by a third longitudinal distance, use the second lateral movement mechanism to drive the middle support leg assembly (22) to move outward of the curve by a fifth lateral distance, and support the middle support leg assembly (22); The rear outrigger assembly (23) is retracted, and the arm (1) at the middle outrigger assembly (22) is driven to move outward a sixth lateral distance using the second lateral movement mechanism; The front outrigger assembly (21) and the middle outrigger assembly (22) are used to drive the boom (1) forward a fourth longitudinal distance. When the front auxiliary outrigger assembly (20) reaches the second pier (52), the front auxiliary outrigger assembly (20) is supported on the second pier (52). Support the rear support leg assembly (23), retract the middle support leg assembly (22) and move the middle support leg assembly (22) forward by a fifth longitudinal distance, and support the middle support leg assembly (22); Retract the front outrigger assembly (21), move the front outrigger assembly (21) forward by a sixth longitudinal distance, support the front outrigger assembly (21), retract the front auxiliary outrigger assembly (20), and move the front traveling carriage (31) and the rear traveling carriage (32) to the rear of the middle outrigger assembly (22) to complete the passage.

2. The construction method of the bridge erecting machine as described in claim 1, characterized in that, The small curve through-hole method further includes: after the front support leg assembly (21) moves forward by the sixth longitudinal distance, the front support leg assembly (21) is rotated to be parallel to the second pier (52).

3. The construction method of the bridge erecting machine as described in claim 2, characterized in that, The small curve through-hole method further includes: when the middle support leg assembly (22) is retracted and moved forward by a fifth longitudinal distance, the second lateral movement mechanism is used to drive the middle support leg assembly (22) to move a seventh lateral distance toward the centerline of the first pier (51), supporting the middle support leg assembly (22).

4. The construction method of the bridge erecting machine as described in claim 1, characterized in that, The bridge erecting machine's crossing-the-span step further includes, when the construction route is a steep slope section, the bridge erecting machine uses a steep slope crossing-the-span method, which includes: When the bridge erection machine finishes its beam erection step, release the positioning pins between the front outrigger assembly (21), the middle outrigger assembly (22), and the boom (1); The front outrigger assembly (21) and the middle outrigger assembly (22) simultaneously drive the arm (1) forward a first longitudinal distance, and the forward carriage (31) and the rear carriage (32) synchronously move to a position a second longitudinal distance from the tail of the arm (1); Support the rear support leg assembly (23), retract the middle support leg assembly (22) and move it forward by a third longitudinal distance, support the middle support leg assembly (22); The rear outrigger assembly (23) is retracted, and the front outrigger assembly (21) and the middle outrigger assembly (22) simultaneously drive the boom (1) to move forward a fourth longitudinal distance. When the front auxiliary outrigger assembly (20) moves to the second pier (52), the front auxiliary outrigger assembly (20) is supported on the second pier (52). Support the rear outrigger assembly (23), retract the middle outrigger assembly (22) and drive the middle outrigger assembly (22) forward by a fifth longitudinal distance, and support the middle outrigger assembly (22); The front outrigger assembly (21) is retracted. The front outrigger assembly (21) is moved forward by a sixth longitudinal distance to the second pier (52) and then supported on the second pier (52). The front auxiliary outrigger assembly (20) is retracted. The front traveling carriage (31) and the rear traveling carriage (32) are both moved to the rear of the middle outrigger assembly (22) to prepare for beam erection. The span is completed.

5. The construction method of the bridge erecting machine as described in claim 4, characterized in that, The bridge erecting machine crossing the span step further includes, when the steep slope section is downhill, the steep slope crossing method further includes: Before releasing the positioning pins between the front outrigger assembly (21), the middle outrigger assembly (22) and the arm (1), the front auxiliary outrigger assembly (20), the front outrigger assembly (21), the middle outrigger assembly (22) and the rear outrigger assembly (23) are lowered to a first height simultaneously.

6. The construction method of the bridge erecting machine as described in claim 5, characterized in that, The bridge erecting machine's beam erection steps include, when the construction route is a slightly curved section, the bridge erecting machine uses the slightly curved beam erection method to erect the beam segments (4), the slightly curved beam erection method includes: The bridge erecting machine prepares to erect the beam; the beam transport vehicle transports the beam segment (4) to the designated position; the second lateral movement mechanism drives the boom (1) at the middle support leg assembly (22) to move laterally outward a distance of eight, and the front trolley (31) is used to hoist the front end of the beam segment (4); the front trolley (31) and the rear trolley (32) advance synchronously a distance of seven longitudinal; the first lateral movement mechanism drives the boom (1) at the front support leg assembly (21) to move laterally outward a distance of one, and the second lateral movement mechanism drives the boom (1) at the middle support leg assembly (22) to move laterally inward a distance of nine; the rear support leg assembly (23) flips vertically, supports the rear support leg assembly (23), and the rear trolley (32) hoists the rear end of the beam segment (4); after the front trolley (31) and the rear trolley (32) have hoisted the beam to the designated position, the two ends of the beam segment (4) are placed on the first pier (51) and the second pier (52) respectively.

7. The construction method of the bridge erecting machine as described in claim 6, characterized in that, The bridge erecting machine beam erection step also includes rotating the middle support leg assembly (22) by a first angle when the bridge erecting machine passes through the tunnel, and rotating the middle support leg assembly (22) back by a first angle after the middle support leg assembly (22) passes through the tunnel.

8. A single-arm bridge erecting machine, characterized in that, The construction method of the bridge erecting machine as described in any one of claims 1-7 includes a boom (1), a front auxiliary leg assembly (20), a front leg assembly (21), a middle leg assembly (22), a rear leg assembly (23), a front traveling vehicle (31), a rear traveling vehicle (32), a first lateral movement mechanism, and a second lateral movement mechanism. The front auxiliary leg assembly (20) and the rear leg assembly (23) are respectively fixedly connected to the front and rear ends of the boom (1). The front leg assembly (21), the middle leg assembly (22), the front traveling vehicle (31), and the rear traveling vehicle (32) are all slidably connected to the boom (1). The first lateral movement mechanism is disposed on the front leg assembly (21), and the second lateral movement mechanism is disposed on the middle leg assembly (22).

9. The single-arm bridge erecting machine as described in claim 8, characterized in that, The front auxiliary outrigger assembly (20), the front outrigger assembly (21), the middle outrigger assembly (22), and the rear outrigger assembly (23) all include a guide sleeve and a guide post. The guide sleeve and the guide post are both arranged along the height direction of the arm (1). The guide sleeve is used to connect with the arm (1), and the guide post is slidably connected to the guide sleeve.

10. The single-arm bridge erecting machine as described in claim 9, characterized in that, The front auxiliary outrigger assembly (20), the front outrigger assembly (21), the middle outrigger assembly (22), and the rear outrigger assembly (23) each include a plurality of guide sleeves and a plurality of guide posts, and the plurality of guide sleeves and the plurality of guide posts are alternately connected.

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