Segmented rubber spliced beam inner box operation trolley and use method thereof

Abstract

This application relates to a segmental glued girder inner box girder construction trolley and its usage method, comprising a main body and a traveling mechanism. The main body includes several longitudinal bridge rods, several transverse bridge telescopic rods, and several vertical telescopic rods, which are interconnected to form a frame. The traveling mechanism includes several main wheels installed at the bottom ends of the vertical telescopic rods, and several auxiliary wheels installed on the bottom longitudinal bridge rods of the main body and distributed along their length. During glue application, the main body is adjusted to the target size, and all main wheels and auxiliary wheels are at the same horizontal level. When passing through a hole to the next segmental glued girder inner box girder, the frame is raised to the target height, the width of the frame is less than the width of the hole, the height of the frame is less than the height of the hole, and the vertical telescopic rods at both ends of the hole extend, while the vertical telescopic rods inside the hole retract. This application can be applied to the construction of segmental glued girder girders of various sizes, while also ensuring that the construction trolley can continuously pass through holes and guaranteeing stability during hole passage.

Description

Technical Field

[0001] This application relates to the field of bridge superstructure construction, specifically to a segmental glued girder inner box girder work trolley and its usage method. Background Technology

[0002] The segmental precast adhesive splicing (referred to as adhesive splicing) bridge construction technology is very mature abroad. As early as the 1960s, European and American countries began to use segmental precast adhesive splicing technology to build bridges. At present, in developed countries such as Europe, America, and Japan, prestressed concrete simply supported beams and continuous beams using adhesive joint construction technology have been widely used in highways, high-speed railways, and urban rail transit, becoming the main construction method for segmental adhesive splicing beams.

[0003] In recent years, this bridge structure has been widely used in highway bridge construction in my country. The adhesive joints use epoxy resin and other adhesive materials, forming wet joints where adjacent precast beam segments are filled with concrete or dry-hardened cement mortar. Dry joints, on the other hand, are not filled with connecting materials and rely entirely on segment tenons and prestressing for connection. Because the top slab of the inner box girder of the segmental glued girder is too high, the application of adhesive, overflow treatment, and treatment of pre-drilled holes in the top slab all require the use of an external construction platform. Existing construction platform structures are relatively simple and cannot adapt to the construction of inner box slabs of various sizes. Furthermore, due to the different cross-sectional dimensions of the inner box slabs, the construction platform cannot move across segments, causing significant inconvenience and low economic efficiency in the construction process. Summary of the Invention

[0004] This application provides a segmental glued girder inner box girder construction trolley and its usage method, which can solve the problem that existing construction platforms are difficult to adapt to the construction of segmental glued girder inner boxes of various sizes and cannot achieve cross-segment movement operations.

[0005] In a first aspect, embodiments of this application provide a segmental glued girder inner box girder operation trolley, comprising: a main body, which includes a plurality of longitudinal bridge rods, a plurality of transverse bridge telescopic rods, and a plurality of vertical telescopic rods, which are interconnected to form a frame; a traveling mechanism, which includes a plurality of main wheels installed at the bottom ends of the vertical telescopic rods, and a plurality of auxiliary wheels installed on the bottom longitudinal bridge rods of the main body and distributed along their length; during glue application, the main body is adjusted to the target size, and all main wheels and auxiliary wheels are at the same horizontal height; when passing through the hole to the next segmental glued girder inner box girder, the frame is raised to the target height, the width of the frame is less than the width of the hole, the height of the frame is less than the height of the hole, and the vertical telescopic rods located at both ends of the hole extend, while the vertical telescopic rods located inside the hole retract.

[0006] In conjunction with the first aspect, in one embodiment, the longitudinal bridge strut is a telescopic strut that retracts when passing through the hole to the inner box girder of the next segment.

[0007] In conjunction with the first aspect, in one embodiment, the main body further includes a plurality of diagonal telescopic rod assemblies for reinforcing the main body, and at least one diagonal telescopic rod assembly is installed on each side of the frame.

[0008] In conjunction with the first aspect, in one embodiment, the oblique telescopic rod assembly includes two oblique long telescopic rods, and the two oblique long telescopic rods are inverted "V" shape, with their intersecting ends hinged to the top telescopic rod on the same side, and the other two ends hinged to the bottom telescopic rod on the same side.

[0009] In conjunction with the first aspect, in one embodiment, when the side of the frame is provided with an oblique telescopic rod assembly, the intersecting end is located at the midpoint of the top telescopic rod on the side, and the other two ends are respectively located at the two ends of the bottom telescopic rod on the side; when the side of the frame is provided with multiple oblique telescopic rod assemblies, the multiple oblique telescopic rod assemblies are distributed between the top telescopic rod and the bottom telescopic rod on the side, and one end of the two oblique long telescopic rods near the two sides of the side is respectively hinged to the two ends of the bottom telescopic rod on the side.

[0010] In conjunction with the first aspect, in one embodiment, the frame has a bottom longitudinal bridge rod extending outwards to both ends along the side of the longitudinal bridge direction. Two oblique long telescopic rods near the sides of the frame intersect and are hinged to the nearest vertical telescopic rod. A short oblique telescopic rod for reinforcing the frame is provided at the hinge. One end of the short oblique telescopic rod is located at the hinge, and the other end is hinged to the longitudinal bridge rod.

[0011] In conjunction with the first aspect, in one embodiment, guardrails are hinged to both sides of the top surface of the main body along the longitudinal direction of the bridge; during the adhesive application operation, the guardrails are vertically installed on the top surface of the main body; when passing through the hole to the inner box of the next segment of the glued beam, the guardrails are folded and placed on both sides of the main body.

[0012] Secondly, embodiments of this application provide a method for using the segmental glued girder inner box girder work trolley as described in any of the above embodiments, the steps of which include:

[0013] During the adhesive application process, adjust the extension and retraction of the transverse and vertical telescopic rods until the dimensions of the work trolley are the target dimensions, where the target dimensions are smaller than the inner box dimensions. When passing through the hole to the inner box of the next segment of the glued girder, adjust the extension and retraction of the transverse telescopic rods until the width of the frame is smaller than the width of the hole, and adjust the extension and retraction of the vertical telescopic rods until the height of the frame is smaller than the height of the hole. Extend the vertical telescopic rods to raise the frame to the target height and move the work trolley towards the hole, where the target height is the vertical height of the bottom of the hole. When a vertical telescopic rod is about to enter the hole, retract the vertical telescopic rod so that its height is smaller than the height of the hole, and move the work trolley inside the hole. After the vertical telescopic rod has passed through the hole, extend the vertical telescopic rod so that its bottom main wheel lands on the bottom of the inner box of the next segment of the glued girder, and move the work trolley further. Perform the entry operation of other vertical telescopic rods until the work trolley has completely passed through the hole.

[0014] In conjunction with the second aspect, in one embodiment, when passing through the hole to the inner box of the next segment of the glued beam, before the vertical telescopic rod is extended, the work trolley is supported by the main wheel and the auxiliary wheel; after the vertical telescopic rod is extended, the work trolley is supported by the main wheel.

[0015] In conjunction with the second aspect, in one embodiment, after the vertical telescopic rod enters the hole, the height of the main wheel outside the hole is lower than the height of the main wheel inside the hole, and the height of the main wheel inside the hole is level with the height of all auxiliary wheels.

[0016] The beneficial effects of the technical solutions provided in this application include:

[0017] In this application, by adjusting the dimensions of the transverse and vertical telescopic rods of the main body, the working trolley becomes adjustable in both the transverse and vertical directions. Most importantly, workers can adjust the transverse and vertical dimensions of the working trolley according to the inner box dimensions of the segmental glued girder, thus making it suitable for the construction of segmental glued girder of various sizes. This greatly facilitates the workers' glue application work and results in significant economic benefits.

[0018] When using this work trolley to cross the hole to the next segment of the glued-joint girder inner box girder, the dimensions of the transverse and vertical telescopic rods of the main body can be adjusted to ensure that the work trolley can smoothly enter the hole. By adjusting the extension of the vertical telescopic rod and coordinating the main and auxiliary wheels, the work trolley can be ensured to pass through the hole continuously, and its stability during passage can be guaranteed, preventing it from tilting or being damaged by friction against the inner wall of the hole. This application solves the problem that existing construction platforms are difficult to adapt to the construction of girder inner box girder segments of various sizes and cannot achieve cross-segment movement operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the segmental glued beam inner box girder operation trolley in the embodiments of this application;

[0021] Figure 2 for Figure 1 Side view of the medium-sized work trolley;

[0022] Figure 3 for Figure 1 A schematic diagram of the first state when the medium-duty trolley passes through the hole;

[0023] Figure 4 for Figure 1 A schematic diagram of the second state when the medium-duty trolley passes through the hole;

[0024] Figure 5 for Figure 1 A schematic diagram of the third state when the medium-duty trolley passes through the hole;

[0025] Figure 6 for Figure 1 A flowchart illustrating the operation of the inner box girder work trolley for the mid-segment glued girder.

[0026] In the picture:

[0027] 1. Main body; 11. Longitudinal bridge pole; 12. Transverse bridge telescopic pole; 13. Vertical telescopic pole; 14. Frame; 15. Diagonal long telescopic pole; 16. Diagonal short telescopic pole;

[0028] 2. Walking mechanism; 21. Main wheel; 22. Auxiliary wheel;

[0029] 3. Guardrails. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0031] This application provides a segmental glued girder inner box girder construction trolley and its usage method, which can solve the problem that existing construction platforms are difficult to adapt to the construction of segmental glued girder inner boxes of various sizes and cannot achieve cross-segment movement operations.

[0032] Firstly, a segmental glued girder inner box girder operation trolley is provided.

[0033] Reference Figure 1-5 , Figure 1 This is a schematic diagram of the segmental glued beam inner box girder operation trolley in the embodiments of this application; Figure 2 for Figure 1 Side view of the medium-sized work trolley; Figure 3 for Figure 1 A schematic diagram of the first state when the medium-duty trolley passes through the hole; Figure 4 for Figure 1 A schematic diagram of the second state when the medium-duty trolley passes through the hole; Figure 5 for Figure 1 A schematic diagram of the third state when the trolley passes through a hole. (Example) Figure 1-5 As shown, in one embodiment, the segmental glued girder inner box girder working trolley includes a main body 1 and a traveling mechanism 2. The main body 1 includes several longitudinal bridge rods 11, several transverse bridge telescopic rods 12, and several vertical telescopic rods 13, which are interconnected to form a frame 14. The traveling mechanism 2 includes several main wheels 21 installed at the bottom of the vertical telescopic rods 13, and several auxiliary wheels 22 installed on the bottom longitudinal bridge rods 11 of the main body 1 and distributed along their length. During the glue application operation, the main body 1 is adjusted to the target size, and all main wheels 21 and auxiliary wheels 22 are at the same horizontal height. When passing through the hole to the next segmental glued girder inner box girder, the frame 14 is raised to the target height. The width of the frame 14 is less than the width of the hole, the height of the frame 14 is less than the height of the hole, and the vertical telescopic rods 13 located at both ends of the hole extend, while the vertical telescopic rods 13 located inside the hole retract.

[0034] The transverse telescopic rod 12 is a telescopic rod installed along the transverse direction of the bridge, which can support the adjustment of the main body 1 in the transverse direction. The vertical telescopic rod 13 is a telescopic rod installed in the vertical direction, which can support the adjustment of the main body 1 in the vertical direction. The longitudinal telescopic rod 11 can be a fixed rod installed in the longitudinal direction or a telescopic rod installed in the longitudinal direction. When the longitudinal telescopic rod 11 is a fixed rod, it cannot support the adjustment of the main body 1 in the longitudinal direction. When the longitudinal telescopic rod 11 is a telescopic rod, it can support the adjustment of the main body 1 in the longitudinal direction. In addition, all telescopic rods can be made of two hollow steel pipes of different sizes connected together, and their connection is fixed by a pin.

[0035] The main wheel 21 is installed at the bottom end of the vertical telescopic rod 13 and can move up and down vertically along with the bottom end of the vertical telescopic rod 13. When the vertical telescopic rod 13 is extended and the bottom end of the vertical telescopic rod 13 does not move, the main wheel 21 remains in contact with the bottom of the inner box of the segmental glued girder, at which time the frame 14 will be raised. It should be noted that the term "frame 14" in this embodiment only includes the structure formed by the interconnection of several bridge-direction rods, several transverse bridge-direction telescopic rods 12, and several vertical telescopic rods 13. The part that extends out due to the extension of the telescopic rods can be regarded as part of the main body 1, but does not belong to the scope of the frame 14. The auxiliary wheel 22 is installed on the bottom longitudinal bridge-direction rod 11 of the main body 1. If the longitudinal bridge-direction rod 11 is a fixed rod, the auxiliary wheel 22 cannot move in the longitudinal bridge direction; if the longitudinal bridge-direction rod 11 is a telescopic rod, it can.

[0036] When using this work trolley to apply adhesive to the inner box of the segmental glued beam, each type of segmental glued beam inner box corresponds to a target size of the main body 1, which is calculated in advance by the staff. Therefore, in this embodiment, the target size can be used as existing technology. The main body 1 can be adjusted to the target size, and all the main wheels 21 and auxiliary wheels 22 are at the same horizontal height, so that they can work together to support the bottom of the inner box and support the entire weight of the main body 1.

[0037] When using the work trolley to pass through the hole to the next segment of the glued-joint girder inner box, the main body 1 can achieve this by means of the traveling mechanism 2. The "hole" actually refers to the end section opening of the segmental glued-joint girder inner box, through which direct access to the next segment of the glued-joint girder inner box is possible. Because the hole size of the segmental glued-joint girder inner box is small, and the hole size varies for each type of segmental glued-joint girder inner box, the dimensions of the transverse telescopic rod 12 and the vertical telescopic rod 13 can be adjusted to raise the frame 14 to the target height. The width of the frame 14 is less than the width of the hole, the height of the frame 14 is less than the height of the hole, and the vertical telescopic rods 13 at both ends of the hole extend while those inside the hole retract.

[0038] In this implementation, by adjusting the dimensions of the transverse bridge telescopic rod 12 and the vertical telescopic rod 13 of the main body 1, the working trolley becomes adjustable in both the transverse and vertical directions. Most importantly, workers can adjust the transverse and vertical dimensions of the working trolley according to the dimensions of the inner box of the segmental glued girder, thus making it suitable for the construction of segmental glued girder of various sizes. This greatly facilitates the workers' glue application work and results in significant economic benefits. When using the working trolley to pass through the hole to the next segmental glued girder inner box, the dimensions of the transverse bridge telescopic rod 12 and the vertical telescopic rod 13 of the main body 1 can also be adjusted to ensure that the working trolley can smoothly enter the hole. By adjusting the extension and retraction of the vertical telescopic rod 13, and simultaneously using the main wheel 21 and the auxiliary wheel 22 in coordination, the working trolley can be ensured to pass through the hole continuously, and its stability during passage can be guaranteed, preventing tilting or damage from friction against the inner wall of the hole. This embodiment solves the problem that existing construction platforms are difficult to adapt to the construction of inner boxes of segmental glued girder of various sizes and cannot achieve cross-segment movement operations.

[0039] Furthermore, in one embodiment, such as Figure 1 As shown, the longitudinal bridge lintel 11 is a telescopic rod. When passing through the hole to the inner box girder of the next segment, the longitudinal bridge lintel 11 retracts. In this embodiment, the longitudinal bridge lintel 11 is a telescopic rod, which can support the adjustment of the main body 1 in the longitudinal direction. When passing through the hole to the inner box girder of the next segment, the longitudinal bridge lintel 11 can retract, making the length of the main body 1 shorter, enabling it to pass through the hole more quickly, and making construction more efficient and convenient.

[0040] Furthermore, in one embodiment, such as Figure 1 and Figure 2 As shown, the main body 1 also includes several diagonal telescopic rod assemblies for reinforcing the main body 1, and at least one diagonal telescopic rod assembly is installed on each side of the frame 14. In this embodiment, the diagonal telescopic rod assembly can be used to reinforce the main body 1. By installing at least one diagonal telescopic rod assembly on each side of the frame 14, the frame 14 can be made more robust, and the frame 14 will not easily deform when the worker stands on the work platform to perform adhesive application.

[0041] Furthermore, in one embodiment, such as Figure 1 and Figure 2As shown, the inclined telescopic rod assembly includes two inclined long telescopic rods 15, which are inverted "V" shapes. Their intersecting ends are hinged to the top telescopic rod on the corresponding side, and the other two ends are hinged to the bottom telescopic rod on the corresponding side. In this embodiment, the inclined telescopic rod assembly includes two inclined long telescopic rods 15. By arranging the two inclined long telescopic rods 15 in an inverted "V" shape, with their intersecting ends hinged to the top telescopic rod on the corresponding side and the other two ends hinged to the bottom telescopic rod on the corresponding side, this inverted "V" design allows the work trolley to retract into a smaller space when not in use, facilitating storage and transport. Simultaneously, the two inverted "V" shaped inclined long telescopic rods 15 and the bottom telescopic rod on the corresponding side form a triangular structure, which has good mechanical stability and can withstand greater external forces and pressures, thereby improving the stability of the main body 1.

[0042] Furthermore, in one embodiment, such as Figure 1 As shown, when a diagonal telescopic rod assembly is provided on the side of the frame 14, the intersecting end is located at the midpoint of the top telescopic rod on the side, and the other two ends are located at the two ends of the bottom telescopic rod on the side. When multiple diagonal telescopic rod assemblies are provided on the side of the frame 14, the multiple diagonal telescopic rod assemblies are distributed between the top telescopic rod and the bottom telescopic rod on the side, and one end of the two diagonal long telescopic rods 15 near the two sides of the side is respectively hinged to the two ends of the bottom telescopic rod on the side. In this embodiment, when a diagonal telescopic rod assembly is provided on the side of the frame 14, the intersecting end can be located at the midpoint of the top telescopic rod on the side, and the other two ends are located at the two ends of the bottom telescopic rod on the side. This makes installation more convenient and ensures that the diagonal telescopic rod assembly can extend and retract together with other telescopic rods (including but not limited to the transverse bridge telescopic rod 12, the longitudinal bridge rod 11, or the vertical telescopic rod 13; note: if the longitudinal bridge rod 11 is a fixed rod, it cannot extend and retract; if it is a telescopic rod, it can extend and retract in the longitudinal bridge direction), and also enhances the stability of the frame 14.

[0043] When multiple oblique telescopic rod assemblies are provided on the side of the frame 14, the multiple oblique telescopic rod assemblies are distributed between the top telescopic rod and the bottom telescopic rod on the side. One end of the two oblique long telescopic rods 15 near the two sides of the side is respectively hinged to the two ends of the bottom telescopic rod on the side. The multiple oblique telescopic rod assemblies can be installed in a flat installation or in a cross installation. If there is a cross point, the cross oblique long telescopic rods 15 are hinged at the cross point to ensure that the multiple oblique telescopic rod assemblies can extend and retract normally. The structure is relatively compact and the fixing effect on the frame 14 is relatively significant.

[0044] Furthermore, in one embodiment, such as Figure 1As shown, along the longitudinal direction of the frame 14, the bottom longitudinal bridge rod 11 extends outwards to both ends of the frame 14. Two long, oblique telescopic rods 15, located near the sides of the frame, intersect and are hinged to the nearest vertical telescopic rod 13. A short, oblique telescopic rod 16 is provided at the hinge point to reinforce the frame 14. One end of the short, oblique telescopic rod 16 is located at the hinge point, and the other end is hinged to the longitudinal bridge rod 11. In this embodiment, this structure makes the overall structure of the frame 14 more stable and prevents it from easily deforming under great pressure and external forces.

[0045] Furthermore, in one embodiment, such as Figure 1-5 As shown, guardrails 3 are hinged to both sides of the top surface of the main body 1 along the longitudinal direction of the bridge. During the adhesive application operation, the guardrails 3 are vertically installed on the top surface of the main body 1. When passing through the hole to the inner box of the next segment of the glued beam, the guardrails 3 are folded and placed on both sides of the main body 1. In this embodiment, by hinged guardrails 3 to both sides of the top surface of the main body 1 along the longitudinal direction of the bridge, the guardrails 3 are vertically installed on the top surface of the main body 1 during the adhesive application operation, which can effectively prevent workers from falling from a height due to carelessness or loss of balance, thereby ensuring their safety. When passing through the hole to the inner box of the next segment of the glued beam, the guardrails 3 are folded and placed on both sides of the main body 1, which can reduce the adjustment amount of the vertical telescopic rod 13 and facilitate the passage of the work trolley through the hole.

[0046] In some other embodiments, the side of the main body 1 is detachably equipped with a staircase for workers to climb to the top of the main body 1, and the top of the main body 1 is provided with a platform for workers to walk on.

[0047] Secondly, a method for using the segmental glued beam inner box girder work trolley in any of the above embodiments is provided.

[0048] See Figure 6 , Figure 6 for Figure 1 A flowchart illustrating the operation of the inner box girder assembly trolley for medium-segment glued beams. (See attached diagram.) Figure 6 As shown, the steps for using the segmental glued girder inner box girder work trolley include:

[0049] Step S10: During the adhesive application operation, adjust the extension and retraction of the transverse bridge telescopic rod 12 and the vertical telescopic rod 13 until the size of the work trolley meets the target size, wherein the target size is smaller than the inner box size.

[0050] In this embodiment, after the bridge erecting machine hoists and lowers each segment of the glued-joint beam to the designated position, during the adhesive application operation, workers can use the assembly work trolley inside the girder segment to adjust the extension and retraction of the transverse telescopic rod 12 and the vertical telescopic rod 13 until the size of the work trolley meets the target size. This ensures that workers can easily complete the adhesive application to the top plate of the inner box girder using this work trolley, guaranteeing construction quality and making construction more efficient and convenient. The target size being smaller than the inner box girder size is because the size of the work trolley is planned in advance based on the inner box girder size to better complete the adhesive application operation; therefore, it must be smaller than the inner box girder size.

[0051] It should be noted that when adjusting the size of the work trolley, the size of the work trolley can be appropriately smaller than the target size. This way, there is no need to be precise to a specific value, the adjustment is not troublesome, and the construction efficiency can be improved.

[0052] Step S20: When passing through the hole to the inner box girder of the next segment, adjust the extension amount of the transverse bridge extension rod 12 until the width of the frame 14 is less than the width of the hole, and adjust the extension amount of the vertical extension rod 13 until the height of the frame 14 is less than the height of the hole.

[0053] Step S30: Extend the vertical telescopic rod 13 to raise the frame 14 to the target height and move the work trolley towards the hole, where the target height is the vertical height of the bottom of the hole.

[0054] In this embodiment, when passing through the hole to the inner box girder of the next segment, the expansion and contraction of the transverse bridge telescopic rod 12 and the expansion and contraction of the vertical telescopic rod 13 are adjusted so that the width of the frame 14 is less than the width of the hole and its height is less than the height of the hole. This ensures that when the work trolley passes through the hole, the frame 14 can smoothly enter the hole and will not be stuck by the hole.

[0055] Next, the frame 14 is raised to the target height by extending the vertical telescopic rod 13 separately, and the work trolley is moved towards the hole. The target height is the vertical height of the bottom of the hole. When the frame 14 is raised to the target height, the auxiliary wheel 22 is also raised to the target height along with the frame 14. As the work trolley moves to the hole, the auxiliary wheel 22 can slide directly on the bottom of the hole.

[0056] In this embodiment, preferably, when the work trolley passes through the hole, the auxiliary wheel 22 passes through the hole earlier than the main wheel 21. In this way, the auxiliary wheel 22 can provide some support for the frame 14, reduce the stress on the main wheel 21, and at the same time have a certain guiding effect, making it easier for the main wheel 21 to enter the hole.

[0057] In step S40, when the vertical telescopic rod 13 is about to enter the hole, the vertical telescopic rod 13 is retracted so that its height is less than the height of the hole, and the work trolley moves inside the hole; after the vertical telescopic rod 13 passes through the hole, the vertical telescopic rod 13 is extended so that the main wheel 21 at its bottom lands on the bottom of the inner box of the next segment of the glued beam, and the work trolley continues to move.

[0058] In step S50, perform the insertion operation of other vertical telescopic rods 13 until the work trolley has completely passed through the hole.

[0059] In this embodiment, the work trolley moves towards the hole. When the vertical telescopic rod 13 is about to enter, the vertical telescopic rod 13 is retracted so that its height is less than the hole height, and the work trolley continues to move in the hole, so as to achieve the purpose of the work trolley passing through the hole.

[0060] In this embodiment, if the auxiliary wheel 22 enters the hole before the main wheel 21, it can support the frame 14 together with the main wheel 21. This not only reduces the operational pressure on the workers when retracting the vertical telescopic rod 13, but also helps maintain the balance of the work trolley. Simultaneously, the sliding of the auxiliary wheel 22 within the hole indicates that part of the work trolley has entered the hole, which facilitates the subsequent entry of the vertical telescopic rod 13. After the vertical telescopic rod 13 passes through the hole, it extends, causing its bottom main wheel 21 to land on the bottom of the next segment of the glued beam inner box, allowing the work trolley to continue moving. This ensures the work trolley lands stably in the next segment of the glued beam inner box, guaranteeing its stability. Following this method, the other vertical telescopic rods 13 are then inserted into the holes until the work trolley has completely passed through.

[0061] Furthermore, in one embodiment, such as Figure 3-5 As shown, when passing through the hole to the inner box of the next segment of the glued beam, before the vertical telescopic rod 13 is extended, the work trolley is supported by the main wheel 21 and the auxiliary wheel 22; after the vertical telescopic rod 13 is extended, the work trolley is supported by the main wheel 21.

[0062] In this embodiment, before extending the vertical telescopic rod 13 when passing through the hole to the inner box of the next segment of the glued-joint beam, it indicates that the work trolley is currently in the preparation stage before passing through the hole. At this time, only the width and height of the work trolley are adjusted. All the main wheels 21 and all the auxiliary wheels 22 are still engaged with the bottom of the inner box of the segment of the glued-joint beam, jointly supporting the work trolley and ensuring that the work trolley is subjected to balanced forces. After extending the vertical telescopic rod 13, the work trolley is still in the preparation stage before passing through the hole, but the work trolley is raised to the target height. At this time, only the main wheels 21 are engaged with the bottom of the inner box to support the work trolley.

[0063] Furthermore, in one embodiment, such as Figure 3-5As shown, after the vertical telescopic rod 13 enters the hole, the height of the main wheel 21 outside the hole is lower than the height of the main wheel 21 inside the hole, and the height of the main wheel 21 inside the hole is level with the height of all the auxiliary wheels 22.

[0064] In this embodiment, after the vertical telescopic rod 13 enters the hole, the height of the main wheel 21 outside the hole is lower than the height of the main wheel 21 inside the hole, which can support the work trolley outside the hole and keep the work trolley balanced. After the vertical telescopic rod 13 retracts, the main wheel 21 will retract into the hole along with the end of the vertical telescopic rod 13. At this time, the height of the main wheel 21 inside the hole is the same as the height of all the auxiliary wheels 22. In this way, after the auxiliary wheels 22 enter the hole, they can also slide inside the hole to ensure the stability of the work trolley when passing through the hole.

[0065] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0066] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A segmental glued-joint beam inner box girder operation trolley, characterized in that, include: The main body (1) includes several longitudinal bridge rods (11), several transverse bridge telescopic rods (12) and several vertical telescopic rods (13), which are connected to each other to form a frame (14). The walking mechanism (2) includes several main wheels (21) installed at the bottom of the vertical telescopic rod (13), and several auxiliary wheels (22) installed on the bottom longitudinal bridge rod (11) of the main body (1) and distributed along its length. During the adhesive application process, the main body (1) is adjusted to the target size, and all main wheels (21) and auxiliary wheels (22) are at the same horizontal level. When passing through the hole to the inner box of the next segment of glued girder, the frame (14) is raised to the target height. The width of the frame (14) is less than the width of the hole, and the height of the frame (14) is less than the height of the hole. That is, the vertical telescopic rod (13) passing through the hole is retracted and prepared to pass through the hole. After passing through the hole, the vertical telescopic rod (13) is extended until it lands on the bottom of the inner box of the next segment of glued girder.

2. The segmental glued girder inner box girder work trolley as described in claim 1, characterized in that, The longitudinal bridge joist (11) is a telescopic rod. When passing through the hole to the inner box of the next segment of glued girder, the longitudinal bridge joist (11) retracts.

3. The segmental glued girder inner box girder work trolley as described in claim 2, characterized in that, The main body (1) also includes several oblique telescopic rod assemblies for reinforcing the main body (1), and at least one oblique telescopic rod assembly is installed on each side of the frame (14).

4. The segmental glued girder inner box girder work trolley as described in claim 3, characterized in that, The oblique telescopic rod assembly includes two oblique long telescopic rods (15), and the two oblique long telescopic rods (15) are inverted "V" shape. Their intersecting ends are hinged to the top telescopic rod on the side where they are located, and the other two ends are hinged to the bottom telescopic rod on the side where they are located.

5. The segmental glued girder inner box girder work trolley as described in claim 4, characterized in that, When the side of the frame (14) is provided with an oblique telescopic rod assembly, the intersecting end is located at the midpoint of the top telescopic rod on the side, and the other two ends are located at the two ends of the bottom telescopic rod on the side. When the frame (14) is provided with multiple oblique telescopic rod assemblies on its side, the multiple oblique telescopic rod assemblies are distributed between the top telescopic rod and the bottom telescopic rod on the side, and one end of the two oblique long telescopic rods (15) close to the two sides of the side is respectively hinged to the two ends of the bottom telescopic rod on the side.

6. The segmental glued girder inner box girder work trolley as described in claim 5, characterized in that, Along the longitudinal bridge direction of the frame (14), the bottom longitudinal bridge rod (11) extends to both ends outside the frame (14), and two oblique long telescopic rods (15) close to the sides of the side intersect and are hinged to the nearest vertical telescopic rod (13). At the hinge, there is an oblique short telescopic rod (16) for reinforcing the frame (14). One end of the oblique short telescopic rod (16) is located at the hinge, and the other end is hinged to the longitudinal bridge rod (11).

7. The segmental glued girder inner box girder work trolley as described in claim 1, characterized in that, The top surface of the main body (1) is hinged with guardrails (3) on both sides along the longitudinal direction of the bridge. During the adhesive application process, the guardrail (3) is vertically positioned on the top surface of the main body (1); When passing through the hole to the inner box of the next segment of glued beam, the guardrail (3) is folded and placed on both sides of the main body (1).

8. A method of using a segmental glued girder inner box girder work trolley as described in any one of claims 1-7, characterized in that the steps are as follows: include: During the adhesive application process, adjust the extension and retraction of the transverse telescopic rod (12) and the vertical telescopic rod (13) until the size of the work trolley is the target size, wherein the target size is smaller than the inner box size; When passing through the hole to the inner box girder of the next segment, adjust the extension of the transverse bridge extension rod (12) until the width of the frame (14) is less than the hole width, and adjust the extension of the vertical extension rod (13) until the height of the frame (14) is less than the hole height. Extend the vertical telescopic rod (13) to raise the frame (14) to the target height and move the work trolley toward the hole, wherein the target height is the vertical height of the bottom of the hole; When a vertical telescopic rod (13) is about to enter the hole, the vertical telescopic rod (13) is retracted so that its height is less than the height of the hole, and the work trolley moves inside the hole; after the vertical telescopic rod (13) passes through the hole, the vertical telescopic rod (13) is extended so that the main wheel (21) at its bottom lands on the bottom of the box of the next segment of glued beam, and the work trolley continues to move; Perform insertion operations for other vertical telescopic rods (13) until the work trolley is completely through the hole.

9. The method of using the segmental glued girder inner box girder work trolley as described in claim 8, characterized in that, When passing through the hole to the inner box of the next segment of glued beam, before the vertical telescopic rod (13) is extended, the work trolley is supported by the main wheel (21) and the auxiliary wheel (22); after the vertical telescopic rod (13) is extended, the work trolley is supported by the main wheel (21).

10. The method of using the segmental glued girder inner box girder work trolley as described in claim 9, characterized in that, After the vertical telescopic rod (13) is inserted into the hole, the height of the main wheel (21) outside the hole is lower than the height of the main wheel (21) inside the hole, and the height of the main wheel (21) inside the hole is level with the height of all auxiliary wheels (22).

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