Auxiliary device and method for realizing small-radius curve hole passing of bridge machine by using the same

Abstract

The present application belongs to the field of bridge girder erection machine overpass technology, and discloses an auxiliary device and a method for realizing small-radius curve overpass of a bridge girder erection machine by using the auxiliary device. The auxiliary device comprises a hanger wheel assembly, a connecting frame, a plurality of limiting mechanisms and an adjusting assembly. The hanger wheel assembly is arranged to roll on the main beam of the bridge girder erection machine. The hanger wheel assembly is connected to the connecting frame, and the connecting frame is arranged on the walking mechanism. The limiting mechanism is connected to the connecting frame, and the limiting mechanism is arranged to be spaced apart from the main beam of the bridge girder erection machine to limit the main beam of the bridge girder erection machine in the transverse direction. The adjusting assembly comprises an adjusting pad, which is clamped between the limiting mechanism and the connecting frame. The distance between the limiting mechanism and the main beam of the bridge girder erection machine can be changed by increasing or decreasing the adjusting pad. The limiting mechanism is arranged to be spaced apart from the main beam of the bridge girder erection machine, so that the main beam of the bridge girder erection machine can be limited to avoid transverse instability and reduce damage to the outer side of the main beam. The size of the spacing can be changed by increasing or decreasing the adjusting pad to realize real-time limiting and ensure safe overpass.

Description

Technical Field

[0001] This invention relates to the field of bridge erecting machine hole-passing technology, and in particular to an auxiliary device and a method for using it to enable bridge erecting machines to pass through small-radius curve holes. Background Technology

[0002] With the increasing sophistication of highway construction, precast box girders, as a pioneer in highway construction, place higher demands on the safety of box girder erection and bridge erecting machines. In particular, in some areas where terrain and geographical constraints necessitate the use of large-tonnage precast box girder bridge erecting machines, the minimum radius of a highway curve can reach 1170m, and the maximum weight of a box girder can reach 1100t. However, large-tonnage precast box girder bridge erecting machines differ from conventional bridge erecting equipment in not only their unique structure but also their complex operating conditions. When facing small-radius curves, the sheer weight and large size of the erecting machine itself pose risks such as lateral instability and damage to the outer lower edge of the main girder by the gears of the gear train when making significant lateral displacement changes. Therefore, how to limit the lateral movement of the bridge erecting machine in real time when crossing small-radius curves to reduce damage to the outer side of the main girder and ensure the stability of the bridge erecting machine's lateral movement is a pressing problem that needs to be solved by those in this field. Summary of the Invention

[0003] The purpose of this invention is to provide an auxiliary device and a method for using it to enable a bridge erecting machine to pass through a small-radius curve, thereby achieving real-time limiting of the lateral movement of the bridge erecting machine when passing through a small-radius curve, reducing damage to the outer side of the main beam, and ensuring the stability of the lateral movement of the bridge erecting machine.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The auxiliary device includes a traveling mechanism and a main beam of the bridge erecting machine. The traveling mechanism is rotatably connected to the main beam of the bridge erecting machine via the auxiliary device. The auxiliary device includes:

[0006] A roller assembly that is rotatably mounted on the main beam of the bridge erecting machine;

[0007] A connecting frame, to which the wheel assembly is connected, and the connecting frame is mounted on the traveling mechanism;

[0008] Several limiting mechanisms are connected to the connecting frame and are spaced apart from the main beam of the bridge erecting machine to limit the lateral movement of the main beam of the bridge erecting machine.

[0009] The adjustment assembly includes an adjustment pad sandwiched between the limiting mechanism and the connecting frame. The distance between the limiting mechanism and the main beam of the bridge erecting machine can be changed by adding or removing the adjustment pad.

[0010] Optionally, the adjusting assembly further includes a connecting block disposed on the connecting plate of the connecting frame, and the adjusting pad is sandwiched between the connecting block and the limiting mechanism.

[0011] Optionally, the adjustment assembly further includes a fastener, and the limiting mechanism includes a support frame. After the fastener passes through the support frame and the adjustment pad in sequence, it can be screwed into the fastening hole of the connecting block to fix the support frame to the connecting plate.

[0012] Optionally, the limiting mechanism may also include a limiting wheel, which is rotatably mounted on the support frame. The distance between the outer side of the limiting wheel and the main beam of the bridge erecting machine can be changed by adding or removing the adjusting pad.

[0013] Optionally, it also includes a protective frame that covers the outside of several of the limiting mechanisms and is connected to the connecting frame.

[0014] Optionally, the protective frame includes a panel, a cover plate, and a base plate. The panel is arranged vertically, and the cover plate and the base plate are arranged parallel to each other and are both vertically connected to the panel. The panel, the cover plate, and the base plate are all connected to the connecting frame.

[0015] Optionally, the protective frame may further include diagonal bracing and diagonal support members, with the two ends of the diagonal bracing member connected to the connecting frame and the cover plate respectively, and the two ends of the diagonal support member connected to the connecting frame and the base plate respectively.

[0016] Optionally, the wheel assembly includes a drive wheel, and a first traveling wheel and a second traveling wheel that are both rolled on the main beam of the bridge erecting machine, with the drive wheel simultaneously engaging with the first traveling wheel and the second traveling wheel.

[0017] Optionally, the traveling mechanism is provided with two sets of the auxiliary devices, and the two sets of the auxiliary devices are symmetrically arranged with respect to the main beam of the bridge erecting machine.

[0018] A method for using auxiliary devices to enable a bridge erecting machine to pass through small-radius curves, including:

[0019] S1. After placing the traveling mechanism of the bridge erecting machine on the bridge, install two sets of the auxiliary devices on the second and third legs of the traveling mechanism respectively, and roll all the auxiliary devices onto the main beam of the bridge erecting machine.

[0020] S2. Keep the positions of the second and third legs unchanged, and drive the first and fourth legs of the main beam and traveling mechanism of the bridge erecting machine to move forward synchronously to the target distance.

[0021] S3. Move the second and third legs laterally until the main beam of the bridge erecting machine moves laterally, causing the first leg to stand on the bridge pier.

[0022] S4. Adjust the position of the fourth leg to meet the beam feeding conditions;

[0023] S5. Keep the positions of the first and fourth legs unchanged, and drive the second and third legs forward to the target distance. Then adjust their positions until the second leg and the first leg are both on the bridge pier, and the third leg is on the web of the pier adjacent to the bridge pier, thus completing the crossing.

[0024] The beneficial effects of this invention are:

[0025] On one hand, this invention enables a rolling connection between the traveling mechanism and the main beam of the bridge erecting machine through an auxiliary device, thereby changing the position of the traveling mechanism relative to the main beam. Furthermore, the roller assembly in the auxiliary device is rolled on the main beam of the bridge erecting machine, and the connecting frame is connected to both the roller assembly and the traveling mechanism. Thus, the traveling mechanism rolls on the main beam of the bridge erecting machine under the action of the roller assembly, enabling the bridge erecting machine to complete the crossing construction of small-radius curves. The limiting mechanism in the auxiliary device is spaced apart from the main beam of the bridge erecting machine, limiting the main beam's movement during crossing, preventing lateral instability, and ensuring that the main beam of the bridge erecting machine preferentially contacts the limiting mechanism, avoiding direct collision between the connecting frame and the main beam, thereby reducing damage to the outer side of the main beam. Furthermore, several limiting mechanisms are provided and connected to the connecting frame. The adjusting shims of the adjusting assembly are sandwiched between the limiting mechanisms and the connecting frame. Thus, by adding or removing the adjusting shims, the distance between the limiting mechanisms and the connecting frame can be changed. Since the connecting frame is connected to the main beam of the bridge erecting machine through the hanging wheel assembly, the distance between the limiting mechanisms and the main beam of the bridge erecting machine is further changed. Therefore, when crossing small-radius curves, the distance between the limiting mechanisms and the main beam of the bridge erecting machine can be constantly changed by adjusting the shims. This ensures that the limiting mechanisms can limit the main beam of the bridge erecting machine at the same interval when the main beam is in different positions, thereby achieving real-time limiting and avoiding risks such as lateral instability of the bridge erecting machine during the crossing process.

[0026] On the other hand, with the help of auxiliary devices, the main beam of the bridge erecting machine can move relative to the second and third legs of the traveling mechanism, providing support during the movement of the main beam. Furthermore, the first leg allows the entire bridge erecting machine to be stably positioned on the bridge pier, providing support for the subsequent movement of the second and third legs. Moreover, the fourth leg, together with the first leg, provides support and also provides stable support during beam feeding after crossing the span, ensuring the necessary conditions for beam feeding to achieve bridge erection. Attached Figure Description

[0027] Figure 1 This is a front view schematic diagram of the auxiliary device described in an embodiment of the present invention;

[0028] Figure 2 This is a partial sectional view of the auxiliary device described in the embodiment of the present invention from the side;

[0029] Figure 3 This is a partial sectional view of the auxiliary device described in the embodiment of the present invention from top view;

[0030] Figure 4 This is a schematic diagram of the connecting block in the auxiliary device described in an embodiment of the present invention;

[0031] Figure 5 This is a side view of the connecting block in the auxiliary device described in an embodiment of the present invention;

[0032] Figure 6 This is a front view schematic diagram of the panel in the auxiliary device described in the embodiment of the present invention;

[0033] Figure 7 This is a side view of the panel in the auxiliary device described in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the cover plate in the auxiliary device described in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of the base plate in the auxiliary device described in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of step S1 of the method for achieving small-radius curve passage of a bridge erecting machine using an auxiliary device, as described in an embodiment of the present invention.

[0037] Figure 11 This is a schematic diagram of step S3 of the method for achieving small-radius curve passage of a bridge erecting machine using an auxiliary device, as described in an embodiment of the present invention.

[0038] Figure 12 This is a schematic diagram of step S5 of the method for using an auxiliary device to achieve small-radius curve passage of a bridge erecting machine according to an embodiment of the present invention.

[0039] In the picture:

[0040] 100 - Bridge; 200 - Bridge pier; 300 - Main beam of bridge erecting machine; 410 - First leg; 420 - Second leg; 430 - Third leg; 440 - Fourth leg; 510 - First trolley; 520 - Second trolley; 600 - Bridge pier;

[0041] 10-Pulley assembly; 20-Connecting frame; 30-Limiting mechanism; 40-Protective frame;

[0042] 11-First traveling wheel; 12-Drive wheel; 13-Second traveling wheel;

[0043] 201-Connecting plate; 31-Support frame; 32-Limit wheel;

[0044] 41-Diagonal brace; 42-Panel; 43-Cover plate; 44-Base plate; 45-Diagonal brace;

[0045] 421 - Viewing port; 422 - Double slope; 4221 - Inclined surface; 4222 - First slope; 4223 - Second slope;

[0046] 431 - Third slope; 441 - Fourth slope;

[0047] 51-Adjusting pad; 52-Connecting block; 521-Fasting hole. Detailed Implementation

[0048] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0049] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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.

[0050] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being 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," and "under" the second feature includes the first feature being 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.

[0051] With the increasing sophistication of highway construction, precast box girders, as a pioneer in highway construction, place higher demands on the safety of box girder erection and bridge erecting machines. In particular, in some areas where terrain and geographical constraints necessitate the use of large-tonnage precast box girder bridge erecting machines, the minimum radius of a highway curve can reach 1170m, and the maximum weight of a box girder can reach 1100t. However, large-tonnage precast box girder bridge erecting machines differ from conventional bridge erecting equipment in not only their unique structure but also their complex operating conditions. When facing small-radius curves, the sheer weight and large size of the erecting machine itself pose risks such as lateral instability and damage to the outer lower edge of the main girder by the gears of the gear train when making significant lateral displacement changes. Therefore, how to limit the lateral movement of the bridge erecting machine in real time when crossing small-radius curves to reduce damage to the outer side of the main girder and ensure the stability of the bridge erecting machine's lateral movement is a pressing problem that needs to be solved by those in this field.

[0052] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0053] like Figures 1-12 As shown, this embodiment provides an auxiliary device and a method for using it to achieve small-radius curve passage of a bridge erecting machine. In this embodiment, the bridge erecting machine is equipped with a traveling mechanism and a main beam 300. The traveling mechanism is rotatably connected to the main beam 300 via the auxiliary device. The auxiliary device includes a roller assembly 10, a connecting frame 20, several limiting mechanisms 30, and an adjusting component. Specifically, the roller assembly 10 is rotatably mounted on the main beam 300, connected to the connecting frame 20, and mounted on the traveling mechanism. The limiting mechanisms 30 are connected to the connecting frame 20 and are spaced apart from the main beam 300 to laterally limit its movement. The adjusting component includes an adjusting shim 51, which is sandwiched between the limiting mechanisms 30 and the connecting frame 20. By adding or removing the adjusting shim 51, the distance between the limiting mechanisms 30 and the main beam 300 can be changed.

[0054] On the other hand, this embodiment also provides a method for using an auxiliary device to enable a bridge erecting machine to pass through a small-radius curve, including:

[0055] S1. After placing the traveling mechanism of the bridge erecting machine on the bridge 100, two sets of auxiliary devices are respectively installed on the second leg 420 and the third leg 430 of the traveling mechanism, and all auxiliary devices are rolled and installed on the main beam 300 of the bridge erecting machine.

[0056] S2. Keep the positions of the second leg 420 and the third leg 430 unchanged, and drive the main beam 300 of the bridge erecting machine and the first leg 410 and the fourth leg 440 in the traveling mechanism to move forward synchronously to the target distance.

[0057] S3. Move the second leg 420 and the third leg 430 laterally until the main beam 300 of the bridge erecting machine moves laterally, causing the first leg 410 to stand on the bridge pier 600.

[0058] S4. Adjust the position of the fourth support leg 440 to meet the beam feeding conditions;

[0059] S5. Keeping the positions of the first leg 410 and the fourth leg 440 unchanged, and driving the second leg 420 and the third leg 430 forward to the target distance, adjust their positions until the second leg 420 and the first leg 410 are both positioned on the bridge pier 600, and the third leg 430 is positioned on the web of the pier 200 adjacent to the bridge pier 600, thus completing the passage through the hole.

[0060] Specifically, in this embodiment, the auxiliary device enables a rolling connection between the traveling mechanism and the main beam 300 of the bridge erecting machine, thereby changing the position of the traveling mechanism relative to the main beam 300. Furthermore, the roller assembly 10 in the auxiliary device is rolled on the main beam 300, and the connecting frame 20 is connected to both the roller assembly 10 and the traveling mechanism. Thus, the traveling mechanism rolls on the main beam 300 under the action of the roller assembly 10, enabling the bridge erecting machine to complete the crossing construction of small-radius curves. The limiting mechanism 30 in the auxiliary device is spaced apart from the main beam 300, limiting its movement during crossing and preventing lateral instability. It also ensures that the main beam 300 contacts the limiting mechanism 30 first, avoiding direct collision between the connecting frame 20 and the main beam 300, thus reducing damage to the outer side of the main beam. Furthermore, several limiting mechanisms 30 are provided and connected to the connecting frame 20. The adjusting shims 51 of the adjusting assembly are sandwiched between the limiting mechanisms 30 and the connecting frame 20. Thus, by adding or removing the adjusting shims 51, the distance between the limiting mechanisms 30 and the connecting frame 20 can be changed. Since the connecting frame 20 is connected to the main beam 300 of the bridge erecting machine via the roller assembly 10, the distance between the limiting mechanisms 30 and the main beam 300 of the bridge erecting machine is further changed. Therefore, when crossing small-radius curves, the distance between the limiting mechanisms 30 and the main beam 300 of the bridge erecting machine can be constantly changed by adjusting the shims 51. This ensures that the limiting mechanisms 30 can limit the main beam 300 of the bridge erecting machine at the same interval when the main beam 300 is in different positions, thereby achieving real-time limiting and preventing risks such as lateral instability of the bridge erecting machine during the crossing process.

[0061] On the other hand, with the help of auxiliary devices, the main beam 300 of the bridge erecting machine can move relative to the second leg 420 and the third leg 430 in the traveling mechanism, providing support for the movement of the main beam 300. Furthermore, the first leg 410 can stably position the entire bridge erecting machine on the bridge pier 600, providing support for the subsequent movement of the second leg 420 and the third leg 430. Furthermore, the fourth leg 440, together with the first leg 410, provides support and also provides stable support during beam feeding after crossing the span, ensuring the necessary conditions for beam feeding to achieve bridge erection.

[0062] The specific structure of the auxiliary device in this embodiment will be described below.

[0063] like Figures 1-3 As shown, in this embodiment, the auxiliary device includes a wheel assembly 10, a connecting frame 20, a limiting mechanism 30, a protective frame 40, and an adjustment component. Specifically, in this embodiment, the wheel assembly 10, the limiting mechanism 30, and the protective frame 40 are all connected to the connecting frame 20, thereby improving the overall stability of the auxiliary device and ensuring stability during subsequent overall movement. Figures 10-12 As shown, in this embodiment, the bridge erecting machine is used for the overall construction of bridge 100, which consists of piers 200 and box girders. Specifically, a box girder is placed between every two piers 200, and bridge 100 is formed by the continuous splicing of these box girders. Optionally, in this embodiment, the bridge erecting machine includes a main beam 300, a traveling mechanism, and a crane mechanism. The traveling mechanism includes a first leg 410, a second leg 420, a third leg 430, and a fourth leg 440, and the crane mechanism includes a first crane 510 and a second crane 520. Specifically, in this embodiment, the bridge erecting machine achieves small-radius curve crossings by stably placing itself on the piers 600 of the span bridge through the traveling mechanism, and the crane mechanism enables the subsequent movement of the box girders. For example, in this embodiment, the traveling mechanism is provided with two sets of auxiliary devices, and the two sets of auxiliary devices are symmetrically arranged relative to the main beam 300 of the bridge erecting machine. That is, the main beam 300 of the bridge erecting machine is sandwiched between the two sets of auxiliary devices, thereby improving the stable movement of the traveling mechanism on the main beam 300 of the bridge erecting machine and preventing the main beam 300 of the bridge erecting machine from falling off the auxiliary devices, thus reducing its safety risks.

[0064] Combination Figure 1 and Figure 2As shown, specifically, in this embodiment, the roller assembly 10 is rolled on the main beam 300 of the bridge erecting machine, and the connecting frame 20 is mounted on the traveling mechanism, thereby realizing the rolling connection between the traveling mechanism and the main beam 300 of the bridge erecting machine. Optionally, the roller assembly 10 includes a first traveling wheel 11, a drive wheel 12, and a second traveling wheel 13, wherein both the first traveling wheel 11 and the second traveling wheel 13 are rolled on the main beam 300 of the bridge erecting machine, and the drive wheel 12 simultaneously engages with the first traveling wheel 11 and the second traveling wheel 13. Thus, when the drive wheel 12 rotates, it can drive the first traveling wheel 11 and the second traveling wheel 13 to rotate synchronously and in the same direction. Further, the wheel surfaces of all three are arranged vertically, so that when the main beam 300 of the bridge erecting machine moves horizontally, the first traveling wheel 11 and the second traveling wheel 13 can move stably on the main beam 300 of the bridge erecting machine. For example, the first traveling wheel 11, the drive wheel 12, and the second traveling wheel 13 are arranged sequentially along the length of the main beam 300 of the bridge erecting machine, and the centers of the three are located on the same straight line. This ensures that the first traveling wheel 11 and the second traveling wheel 13 can move simultaneously in the same direction on the main beam 300 of the bridge erecting machine, thereby ensuring the stable movement of the traveling mechanism. For example, the drive wheel 12 can be driven by a motor, and the specific driving method is a conventional setting for those skilled in the art.

[0065] Combination Figure 1 and Figure 3 As shown, the connecting frame 20 includes a connecting frame body and a connecting plate 201. The connecting frame body is an irregularly shaped structure and surrounds the outer side of the train assembly 10, spaced apart from it to avoid interference with the operation of the train assembly 10. Further, the connecting plate 201 is disposed on the connecting frame body along the length of the main beam 300 of the bridge erecting machine, with both ends of the connecting plate 201 extending to the outer side of the connecting frame body. Exemplarily, in this embodiment, three limiting mechanisms 30 are provided, one of which is disposed inside the connecting frame body, and the other two are symmetrically disposed outside the connecting frame body relative to the train assembly 10. Specifically, all three limiting mechanisms 30 are disposed on the connecting plate 201.

[0066] Optionally, the limiting mechanism 30 located inside the main body of the connecting frame is fixedly connected to the connecting plate 201, and the other two limiting mechanisms 30 located outside the main body of the connecting frame are detachably connected to the connecting plate 201, and all three are spaced apart from the main beam 300 of the bridge erecting machine. Since there are two sets of auxiliary devices, three limiting mechanisms 30 are provided on both sides of each main beam 300 of the bridge erecting machine, thereby realizing multi-point limiting of the main beam 300 of the bridge erecting machine in the lateral direction.

[0067] Specifically, in this embodiment, the limiting mechanism 30 includes a support frame 31 and a limiting wheel 32, and the limiting wheel 32 is rotatably mounted on the support frame 31. In this way, when the main beam 300 of the bridge erecting machine passes through the hole on a small radius curve, the limiting wheel 32 can reduce the jamming of the main beam 300 of the bridge erecting machine under its rotation, so as to ensure the stable change of its lateral displacement, limit it, prevent it from derailing, and improve the accuracy of the lateral displacement change.

[0068] like Figure 3 As shown, optionally, the adjustment assembly includes fasteners, an adjustment pad 51, and a connecting block 52. Specifically, the adjustment pad 51 is sandwiched between the limiting mechanism 30 and the connecting plate 201 of the connecting frame 20. By adding or removing the adjustment pad 51, the distance between the limiting mechanism 30 and the main beam 300 of the bridge erecting machine can be changed. This allows for real-time adjustment of the distance between the limiting mechanism 30 and the main beam 300 of the bridge erecting machine during the process of the main beam 300 passing through a small-radius curve, thereby achieving real-time lateral limiting of the main beam 300 of the bridge erecting machine. Exemplarily, in this embodiment, the limiting mechanism 30 located inside the main body of the connecting frame is fixed to the connecting plate 201 by a support frame 31, while the support frames 31 of the two limiting mechanisms 30 located outside the main body of the connecting frame are detachably connected to the connecting plate 201. In other embodiments, all three can also be detachably connected to the connecting plate 201. Furthermore, the two detachable limiting mechanisms 30 are connected to the connecting plate 201 by fasteners, which facilitates quick adjustment of the gap and makes disassembly and storage convenient.

[0069] Optionally, the connecting block 52 is disposed on the connecting plate 201 of the connecting frame 20, and the adjusting shim 51 is sandwiched between the connecting block 52 and the support frame 31 of the limiting mechanism 30. Fasteners can sequentially pass through the support frame 31 and the adjusting shim 51, and are screwed into the fastening hole 521 of the connecting block 52, thereby fixing the support frame 31 to the connecting plate 201. Furthermore, by adding or removing the adjusting shim 51, the distance between the support frame 31 and the connecting plate 201 can be changed, thus altering the interval between the outer side of the limiting wheel 32 and the main beam 300 of the bridge erecting machine. Specifically, the connecting block 52 is fixed to the connecting plate 201 by welding, thereby providing the thickness of the basic support and avoiding the use of excessive adjusting shims 51 or the increased weight of the adjusting shims 51, which would make operation inconvenient. For example, in this embodiment, multiple adjusting shims 51 are provided, and they are of the same size and specifications. Thus, by adding or removing different numbers of adjusting shims 51, the distance between the support frame 31 and the connecting block 52 can be changed. In other embodiments, the adjusting pad 51 can also be set as multiple steel plates of different sizes for interval adjustment.

[0070] Optionally, each of the two detachably connected limiting mechanisms 30 is provided with an adjustment component on both sides to ensure the installation stability of the limiting mechanism 30. Further, under the action of the adjustment components, when the main beam 300 of the bridge erecting machine passes through a small-radius curve, the limiting mechanisms 30 on both sides can continuously change their limiting interval, cooperating with the limiting mechanism 30 located inside the connecting frame body in the middle to form an arc-shaped equal limiting curve, ensuring real-time lateral limiting between the outer side of the limiting wheel 32 and the main beam 300 of the bridge erecting machine. In other embodiments, all three limiting mechanisms 30 can be equipped with adjustment components to ensure that the distance between the outer side of the limiting wheel 32 and the main beam 300 of the bridge erecting machine remains constant. For example, the distance between the outer side of the limiting wheel 32 and the main beam 300 of the bridge erecting machine is set to 10mm.

[0071] like Figure 4 and Figure 5 As shown, specifically, the connecting block 52 is a rectangular block with two symmetrically arranged fastening holes 521. In this embodiment, the fastening holes 521 are threaded holes, and the fasteners are grade 9 bolts, which can be screwed into the threaded holes to achieve locking.

[0072] Combination Figure 1 , Figures 6-9 As shown, the protective frame 40 covers the outside of several limiting mechanisms 30. In this embodiment, the protective frame 40 covers the outside of two limiting mechanisms 30 located outside the main body of the connecting frame, to provide external protection and prevent environmental pollution or corrosion. Specifically, in this embodiment, the protective frame 40 includes a diagonal brace 41, a panel 42, a cover plate 43, a base plate 44, and a diagonal support 45. Optionally, the panel 42 is arranged vertically, and the cover plate 43 and the base plate 44 are arranged parallel to each other and are both vertically connected to the panel 42. The panel 42, cover plate 43, and base plate 44 are all connected to the connecting frame 20, thereby ensuring a stable connection between the three and achieving comprehensive protection for the limiting mechanisms 30.

[0073] like Figure 6 and Figure 7As shown, a viewing port 421 is provided on the panel 42 to facilitate real-time observation of the position of the limiting wheel 32 in the limiting mechanism 30. Furthermore, the fasteners can also be adjusted through the viewing port 421 for easy operation. Optionally, the panel 42 is configured as a right-angled trapezoidal structure, and a double-slope surface 422 is provided on the inclined side of this trapezoidal structure. The double-slope surface 422 includes an inclined surface 4221, a first slope 4222, and a second slope 4223. Specifically, the inclined surface 4221 is sandwiched between the first slope 4222 and the second slope 4223, and the first slope 4222 and the second slope 4223 are symmetrically arranged with respect to the inclined surface 4221. Furthermore, the extension surfaces of both are angled to the plane containing the inclined surface 4221. This allows the inclined surface 4221 of the panel 42 to be abutted against the side of the connecting frame 20, and the first slope 4222 and the second slope 4223 to be stably connected to the side of the connecting frame 20 by welding. like Figure 8 and Figure 9 As shown, the cover plate 43 is provided with a third slope 431 and the bottom plate 44 is provided with a fourth slope 441, which facilitates welding to the connecting frame 20.

[0074] Furthermore, the two ends of the diagonal brace 41 are connected to the connecting frame 20 and the cover plate 43, respectively, and the two ends of the diagonal support 45 are connected to the connecting frame 20 and the base plate 44, respectively. This provides diagonal tension to the cover plate 43 and top support to the base plate 44, ensuring a stable connection between the protective frame 40 and the connecting frame 20. For example, the diagonal brace 41, panel 42, cover plate 43, base plate 44, and diagonal support 45 are all made of steel plates and are connected to each other by welding, thereby preventing safety issues such as the plates falling off during the movement of the auxiliary device.

[0075] The following is a detailed explanation of the method for using auxiliary devices to enable bridge erecting machines to pass through small-radius curves.

[0076] like Figures 10-12 As shown, the main steps include:

[0077] S1. After placing the traveling mechanism of the bridge erecting machine on the bridge 100, two sets of auxiliary devices are respectively installed on the second leg 420 and the third leg 430 of the traveling mechanism, and all auxiliary devices are rolled and installed on the main beam 300 of the bridge erecting machine.

[0078] S2. Keep the positions of the second leg 420 and the third leg 430 unchanged, and drive the main beam 300 of the bridge erecting machine and the first leg 410 and the fourth leg 440 in the traveling mechanism to move forward synchronously to the target distance.

[0079] S3. Move the second leg 420 and the third leg 430 laterally until the main beam 300 of the bridge erecting machine moves laterally, causing the first leg 410 to stand on the bridge pier 600.

[0080] S4. Adjust the position of the fourth support leg 440 to meet the beam feeding conditions;

[0081] S5. Keeping the positions of the first leg 410 and the fourth leg 440 unchanged, and driving the second leg 420 and the third leg 430 forward to the target distance, adjust their positions until the second leg 420 and the first leg 410 are both positioned on the bridge pier 600, and the third leg 430 is positioned on the web of the pier 200 adjacent to the bridge pier 600, thus completing the passage through the hole.

[0082] Specifically, step S1 includes:

[0083] S1.1 Place the first leg 410, the second leg 420, the third leg 430 and the fourth leg 440 of the bridge erecting machine's traveling mechanism onto the bridge 100 in sequence;

[0084] S1.2 Two auxiliary devices are symmetrically mounted on the second leg 420 and the third leg 430 respectively, and all auxiliary device roller assemblies 10 are rolled and installed on the main beam 300 of the bridge erecting machine.

[0085] S1.3. Several adjusting pads 51 of the adjusting components in the auxiliary device are clamped between the limiting mechanism 30 and the connecting frame 20 until the distance between the two sides of the main beam 300 of the bridge erecting machine and the outer side of the limiting wheel 32 of each limiting mechanism 30 is 10mm.

[0086] This auxiliary device ensures that the second outrigger 420 and the third outrigger 430 can move relative to the main beam 300 of the bridge erecting machine, while simultaneously limiting the lateral movement of the main beam 300. This reduces jamming when the main beam 300 moves forward or when the two outriggers move, and the lateral limiting also prevents the main beam 300 from skewing, improving work efficiency and quality. During this process, the first trolley 510 can be fixedly connected to the second outrigger 420, and the second trolley 520 can be fixedly connected to the third outrigger 430, thus ensuring that the positions of the first trolley 510 and the second trolley 520 remain unchanged for subsequent use.

[0087] Further, step S3 includes:

[0088] S3.1. By using the transverse hydraulic cylinder, the second leg 420 is eccentrically moved inward by 688mm, and the third leg 430 is eccentrically moved inward by 236mm, thereby changing the position of the main beam 300 of the bridge erecting machine to achieve the angle change of the small radius curve.

[0089] S3.2. By increasing or decreasing the number of adjusting pads 51 in the adjusting components of the auxiliary device, adjust the interval between the two sides of the main beam 300 of the bridge erecting machine and the outer side of the limiting wheel 32 of each limiting mechanism 30 until they are all 10mm.

[0090] This ensures that the gap between the limiting wheel 32 and the main beam 300 of the bridge erecting machine remains constant, thereby guaranteeing that the limiting mechanism 30 provides real-time lateral limiting to the main beam 300 and improving operational safety. For example, in this embodiment, the target distance in steps S2 and S4 is set to 35m. In other embodiments, the target distance, interval size, and movement distance of each leg can be changed as needed; this is not limited here.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An auxiliary device, wherein the bridge erecting machine is equipped with a traveling mechanism and a main beam (300), the traveling mechanism being rotatably connected to the main beam (300) via the auxiliary device, characterized in that, The auxiliary device includes: A bogie assembly (10) is rotatably mounted on the main beam (300) of the bridge erecting machine; A connecting frame (20) is provided, the wheel assembly (10) is connected to the connecting frame (20), and the connecting frame (20) is mounted on the traveling mechanism; A plurality of limiting mechanisms (30) are connected to the connecting frame (20), and the limiting mechanisms (30) are spaced apart from the main beam (300) of the bridge erecting machine to limit the main beam (300) of the bridge erecting machine laterally; The adjustment assembly includes an adjustment pad (51) sandwiched between the limiting mechanism (30) and the connecting frame (20). By adding or removing the adjustment pad (51), the distance between the limiting mechanism (30) and the main beam (300) of the bridge erecting machine can be changed.

2. The auxiliary device according to claim 1, characterized in that, The adjustment assembly also includes a connecting block (52), which is disposed on the connecting plate (201) of the connecting frame (20), and the adjustment pad (51) is sandwiched between the connecting block (52) and the limiting mechanism (30).

3. The auxiliary device according to claim 2, characterized in that, The adjustment assembly also includes fasteners. The limiting mechanism (30) includes a support frame (31). After the fasteners pass through the support frame (31) and the adjustment pad (51) in sequence, they can be screwed into the fastening hole (521) of the connecting block (52) to fix the support frame (31) on the connecting plate (201).

4. The auxiliary device according to claim 3, characterized in that, The limiting mechanism (30) also includes a limiting wheel (32), which is rotatably mounted on the support frame (31). The distance between the outer side of the limiting wheel (32) and the main beam (300) of the bridge erecting machine can be changed by adding or removing the adjusting pad (51).

5. The auxiliary device according to claim 1, characterized in that, It also includes a protective frame (40), which covers the outside of several of the limiting mechanisms (30) and is connected to the connecting frame (20).

6. The auxiliary device according to claim 5, characterized in that, The protective frame (40) includes a panel (42), a cover plate (43) and a base plate (44). The panel (42) is arranged in a vertical direction. The cover plate (43) and the base plate (44) are arranged in parallel and are both vertically connected to the panel (42). The panel (42), the cover plate (43) and the base plate (44) are all connected to the connecting frame (20).

7. The auxiliary device according to claim 6, characterized in that, The protective frame (40) also includes a diagonal brace (41) and a diagonal support (45). The two ends of the diagonal brace (41) are respectively connected to the connecting frame (20) and the cover plate (43), and the two ends of the diagonal support (45) are respectively connected to the connecting frame (20) and the base plate (44).

8. The auxiliary device according to any one of claims 1-7, characterized in that, The roller assembly (10) includes a drive wheel (12), and a first traveling wheel (11) and a second traveling wheel (13) that are both rolled on the main beam (300) of the bridge erecting machine. The drive wheel (12) is engaged with both the first traveling wheel (11) and the second traveling wheel (13).

9. The auxiliary device according to any one of claims 1-7, characterized in that, The traveling mechanism is equipped with two sets of auxiliary devices, and the two sets of auxiliary devices are symmetrically arranged relative to the main beam (300) of the bridge erecting machine.

10. A method for using auxiliary devices to enable a bridge erecting machine to pass through a small-radius curve, characterized in that, include: S1. After placing the traveling mechanism of the bridge erecting machine on the bridge (100), two sets of auxiliary devices as described in any of claims 1-9 are respectively installed on the second leg (420) and the third leg (430) of the traveling mechanism, and all auxiliary devices are rolled and installed on the main beam (300) of the bridge erecting machine. S2. Keep the positions of the second leg (420) and the third leg (430) unchanged, and drive the main beam (300) of the bridge erecting machine and the first leg (410) and the fourth leg (440) in the traveling mechanism to move forward synchronously to the target distance; S3. Move the second leg (420) and the third leg (430) laterally until the main beam (300) of the bridge erecting machine moves laterally, causing the first leg (410) to stand on the bridge pier (600); S4. Adjust the position of the fourth leg (440) to meet the beam feeding conditions; S5. Keep the positions of the first leg (410) and the fourth leg (440) unchanged, and drive the second leg (420) and the third leg (430) forward to the target distance. Then adjust their positions until the second leg (420) and the first leg (410) are both on the bridge pier (600) and the third leg (430) is on the box girder on the top of the pier (200) adjacent to the bridge pier (600), thus completing the crossing.

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